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_copy3_true-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:16:50,682 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:16:50,684 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:16:50,696 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:16:50,696 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:16:50,698 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:16:50,699 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:16:50,701 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:16:50,702 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:16:50,703 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:16:50,704 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:16:50,704 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:16:50,705 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:16:50,706 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:16:50,708 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:16:50,708 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:16:50,709 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:16:50,712 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:16:50,714 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:16:50,715 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:16:50,716 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:16:50,718 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:16:50,723 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:16:50,724 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:16:50,724 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:16:50,725 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:16:50,725 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:16:50,726 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:16:50,726 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:16:50,730 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:16:50,730 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:16:50,731 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:16:50,734 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:16:50,734 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:16:50,735 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:16:50,735 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:16:50,735 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:16:50,736 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:16:50,740 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:16:50,740 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:16:50,755 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:16:50,756 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:16:50,757 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:16:50,757 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:16:50,757 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:16:50,758 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:16:50,758 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:16:50,758 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:16:50,758 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:16:50,758 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:16:50,759 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:16:50,759 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:16:50,759 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:16:50,759 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:16:50,759 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:16:50,760 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:16:50,760 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:16:50,760 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:16:50,760 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:16:50,760 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:16:50,761 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:16:50,761 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:16:50,761 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:16:50,761 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:16:50,761 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:16:50,762 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:16:50,762 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:16:50,762 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:16:50,762 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 11:16:50,802 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:16:50,820 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:16:50,825 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:16:50,827 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:16:50,827 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:16:50,828 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_copy3_true-unreach-call_ground.i [2019-05-23 11:16:50,879 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2f1f5763/c1a2af96fcb54db9bd814d9b291cebb8/FLAG532084758 [2019-05-23 11:16:51,285 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:16:51,285 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_copy3_true-unreach-call_ground.i [2019-05-23 11:16:51,291 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2f1f5763/c1a2af96fcb54db9bd814d9b291cebb8/FLAG532084758 [2019-05-23 11:16:51,677 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2f1f5763/c1a2af96fcb54db9bd814d9b291cebb8 [2019-05-23 11:16:51,688 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:16:51,690 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:16:51,691 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:16:51,691 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:16:51,695 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:16:51,696 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:16:51" (1/1) ... [2019-05-23 11:16:51,699 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a179527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:51, skipping insertion in model container [2019-05-23 11:16:51,699 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:16:51" (1/1) ... [2019-05-23 11:16:51,707 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:16:51,730 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:16:51,969 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:16:51,973 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:16:52,011 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:16:52,037 INFO L146 ILogger]: Completed translation [2019-05-23 11:16:52,038 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:52 WrapperNode [2019-05-23 11:16:52,038 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:16:52,039 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:16:52,039 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:16:52,039 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:16:52,046 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:52" (1/1) ... [2019-05-23 11:16:52,054 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:52" (1/1) ... [2019-05-23 11:16:52,075 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:16:52,076 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:16:52,076 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:16:52,076 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:16:52,084 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:52" (1/1) ... [2019-05-23 11:16:52,085 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:52" (1/1) ... [2019-05-23 11:16:52,087 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:52" (1/1) ... [2019-05-23 11:16:52,088 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:52" (1/1) ... [2019-05-23 11:16:52,094 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:52" (1/1) ... [2019-05-23 11:16:52,201 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:52" (1/1) ... [2019-05-23 11:16:52,202 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:52" (1/1) ... [2019-05-23 11:16:52,209 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:16:52,209 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:16:52,209 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:16:52,209 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:16:52,210 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:52" (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 11:16:52,267 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:16:52,268 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:16:52,268 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:16:52,268 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:16:52,268 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:16:52,268 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:16:52,774 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:16:52,775 INFO L146 ILogger]: Removed 11 assume(true) statements. [2019-05-23 11:16:52,776 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:16:52 BoogieIcfgContainer [2019-05-23 11:16:52,776 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:16:52,777 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:16:52,778 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:16:52,781 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:16:52,781 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:16:51" (1/3) ... [2019-05-23 11:16:52,782 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18be6ecb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:16:52, skipping insertion in model container [2019-05-23 11:16:52,782 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:52" (2/3) ... [2019-05-23 11:16:52,782 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18be6ecb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:16:52, skipping insertion in model container [2019-05-23 11:16:52,783 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:16:52" (3/3) ... [2019-05-23 11:16:52,784 INFO L146 ILogger]: Analyzing ICFG standard_copy3_true-unreach-call_ground.i [2019-05-23 11:16:52,792 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:16:52,800 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:16:52,818 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:16:52,852 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:16:52,853 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:16:52,853 INFO L146 ILogger]: Hoare is true [2019-05-23 11:16:52,853 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:16:52,853 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:16:52,854 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:16:52,854 INFO L146 ILogger]: Difference is false [2019-05-23 11:16:52,854 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:16:52,854 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:16:52,869 INFO L146 ILogger]: Start isEmpty. Operand 70 states. [2019-05-23 11:16:52,876 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 29 [2019-05-23 11:16:52,876 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:52,877 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] [2019-05-23 11:16:52,879 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:52,884 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:52,884 INFO L146 ILogger]: Analyzing trace with hash -1114157759, now seen corresponding path program 1 times [2019-05-23 11:16:52,886 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:52,886 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:52,937 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:52,937 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:52,938 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:52,985 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:53,071 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 11:16:53,074 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:16:53,077 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:16:53,081 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:16:53,091 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:16:53,092 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:16:53,094 INFO L146 ILogger]: Start difference. First operand 70 states. Second operand 3 states. [2019-05-23 11:16:53,183 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:53,183 INFO L146 ILogger]: Finished difference Result 129 states and 149 transitions. [2019-05-23 11:16:53,184 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:16:53,185 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 28 [2019-05-23 11:16:53,185 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:53,198 INFO L146 ILogger]: With dead ends: 129 [2019-05-23 11:16:53,198 INFO L146 ILogger]: Without dead ends: 64 [2019-05-23 11:16:53,202 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 11:16:53,218 INFO L146 ILogger]: Start minimizeSevpa. Operand 64 states. [2019-05-23 11:16:53,237 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 64 to 59. [2019-05-23 11:16:53,238 INFO L146 ILogger]: Start removeUnreachable. Operand 59 states. [2019-05-23 11:16:53,240 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2019-05-23 11:16:53,242 INFO L146 ILogger]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 28 [2019-05-23 11:16:53,242 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:53,242 INFO L146 ILogger]: Abstraction has 59 states and 63 transitions. [2019-05-23 11:16:53,242 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:16:53,243 INFO L146 ILogger]: Start isEmpty. Operand 59 states and 63 transitions. [2019-05-23 11:16:53,244 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 36 [2019-05-23 11:16:53,244 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:53,244 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:53,245 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:53,245 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:53,245 INFO L146 ILogger]: Analyzing trace with hash -277798603, now seen corresponding path program 1 times [2019-05-23 11:16:53,245 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:53,245 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:53,247 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:53,247 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:53,247 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:53,268 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:53,537 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 11:16:53,537 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:53,537 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 11:16:53,557 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:53,609 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:53,611 INFO L146 ILogger]: Trace formula consists of 81 conjuncts, 2 conjunts are in the unsatisfiable core [2019-05-23 11:16:53,618 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:53,679 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 11:16:53,704 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:16:53,705 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-05-23 11:16:53,706 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:16:53,706 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:16:53,706 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:16:53,707 INFO L146 ILogger]: Start difference. First operand 59 states and 63 transitions. Second operand 6 states. [2019-05-23 11:16:54,449 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:54,449 INFO L146 ILogger]: Finished difference Result 130 states and 141 transitions. [2019-05-23 11:16:54,452 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:16:54,452 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 35 [2019-05-23 11:16:54,452 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:54,455 INFO L146 ILogger]: With dead ends: 130 [2019-05-23 11:16:54,455 INFO L146 ILogger]: Without dead ends: 89 [2019-05-23 11:16:54,456 INFO L146 ILogger]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:16:54,458 INFO L146 ILogger]: Start minimizeSevpa. Operand 89 states. [2019-05-23 11:16:54,470 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 89 to 69. [2019-05-23 11:16:54,470 INFO L146 ILogger]: Start removeUnreachable. Operand 69 states. [2019-05-23 11:16:54,473 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2019-05-23 11:16:54,474 INFO L146 ILogger]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 35 [2019-05-23 11:16:54,474 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:54,474 INFO L146 ILogger]: Abstraction has 69 states and 73 transitions. [2019-05-23 11:16:54,475 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:16:54,479 INFO L146 ILogger]: Start isEmpty. Operand 69 states and 73 transitions. [2019-05-23 11:16:54,482 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 64 [2019-05-23 11:16:54,482 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:54,483 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:54,483 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:54,483 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:54,483 INFO L146 ILogger]: Analyzing trace with hash 781009406, now seen corresponding path program 1 times [2019-05-23 11:16:54,484 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:54,484 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:54,486 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:54,486 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:54,486 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:54,517 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:54,634 INFO L146 ILogger]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-05-23 11:16:54,635 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:54,635 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 11:16:54,654 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:54,695 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:54,696 INFO L146 ILogger]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:16:54,711 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:54,804 INFO L146 ILogger]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-05-23 11:16:54,824 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:54,825 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2019-05-23 11:16:54,825 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:16:54,825 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:16:54,826 INFO L146 ILogger]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:16:54,826 INFO L146 ILogger]: Start difference. First operand 69 states and 73 transitions. Second operand 10 states. [2019-05-23 11:16:55,433 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:55,433 INFO L146 ILogger]: Finished difference Result 147 states and 156 transitions. [2019-05-23 11:16:55,434 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:16:55,434 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 63 [2019-05-23 11:16:55,434 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:55,436 INFO L146 ILogger]: With dead ends: 147 [2019-05-23 11:16:55,436 INFO L146 ILogger]: Without dead ends: 103 [2019-05-23 11:16:55,437 INFO L146 ILogger]: 0 DeclaredPredicates, 73 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:16:55,437 INFO L146 ILogger]: Start minimizeSevpa. Operand 103 states. [2019-05-23 11:16:55,444 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 103 to 83. [2019-05-23 11:16:55,444 INFO L146 ILogger]: Start removeUnreachable. Operand 83 states. [2019-05-23 11:16:55,445 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2019-05-23 11:16:55,445 INFO L146 ILogger]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 63 [2019-05-23 11:16:55,446 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:55,446 INFO L146 ILogger]: Abstraction has 83 states and 87 transitions. [2019-05-23 11:16:55,446 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:16:55,446 INFO L146 ILogger]: Start isEmpty. Operand 83 states and 87 transitions. [2019-05-23 11:16:55,448 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 78 [2019-05-23 11:16:55,448 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:55,448 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:55,449 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:55,449 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:55,449 INFO L146 ILogger]: Analyzing trace with hash -890114756, now seen corresponding path program 2 times [2019-05-23 11:16:55,449 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:55,449 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:55,450 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:55,451 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:55,451 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:55,475 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:55,551 INFO L146 ILogger]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-05-23 11:16:55,551 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:55,552 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 11:16:55,562 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:16:55,607 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:16:55,607 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:55,608 INFO L146 ILogger]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:16:55,612 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:55,859 INFO L146 ILogger]: Checked inductivity of 35 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-05-23 11:16:55,879 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:55,879 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9] total 12 [2019-05-23 11:16:55,879 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:16:55,880 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:16:55,880 INFO L146 ILogger]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:16:55,880 INFO L146 ILogger]: Start difference. First operand 83 states and 87 transitions. Second operand 12 states. [2019-05-23 11:16:56,577 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:56,578 INFO L146 ILogger]: Finished difference Result 163 states and 172 transitions. [2019-05-23 11:16:56,579 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-05-23 11:16:56,579 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 77 [2019-05-23 11:16:56,579 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:56,581 INFO L146 ILogger]: With dead ends: 163 [2019-05-23 11:16:56,582 INFO L146 ILogger]: Without dead ends: 112 [2019-05-23 11:16:56,583 INFO L146 ILogger]: 0 DeclaredPredicates, 89 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:16:56,583 INFO L146 ILogger]: Start minimizeSevpa. Operand 112 states. [2019-05-23 11:16:56,590 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 112 to 97. [2019-05-23 11:16:56,591 INFO L146 ILogger]: Start removeUnreachable. Operand 97 states. [2019-05-23 11:16:56,592 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2019-05-23 11:16:56,592 INFO L146 ILogger]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 77 [2019-05-23 11:16:56,592 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:56,593 INFO L146 ILogger]: Abstraction has 97 states and 101 transitions. [2019-05-23 11:16:56,593 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:16:56,593 INFO L146 ILogger]: Start isEmpty. Operand 97 states and 101 transitions. [2019-05-23 11:16:56,596 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 92 [2019-05-23 11:16:56,596 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:56,596 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:56,597 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:56,597 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:56,597 INFO L146 ILogger]: Analyzing trace with hash -25774747, now seen corresponding path program 3 times [2019-05-23 11:16:56,597 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:56,597 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:56,598 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:56,599 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:56,599 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:56,623 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:56,713 INFO L146 ILogger]: Checked inductivity of 65 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-05-23 11:16:56,713 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:56,713 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 11:16:56,724 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:16:56,785 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:16:56,785 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:56,786 INFO L146 ILogger]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:16:56,792 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:56,841 INFO L146 ILogger]: Checked inductivity of 65 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-05-23 11:16:56,860 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:56,860 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-05-23 11:16:56,860 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:16:56,860 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:16:56,861 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:16:56,861 INFO L146 ILogger]: Start difference. First operand 97 states and 101 transitions. Second operand 7 states. [2019-05-23 11:16:56,969 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:56,969 INFO L146 ILogger]: Finished difference Result 125 states and 130 transitions. [2019-05-23 11:16:56,976 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:16:56,976 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 91 [2019-05-23 11:16:56,977 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:56,978 INFO L146 ILogger]: With dead ends: 125 [2019-05-23 11:16:56,978 INFO L146 ILogger]: Without dead ends: 109 [2019-05-23 11:16:56,978 INFO L146 ILogger]: 0 DeclaredPredicates, 97 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:16:56,979 INFO L146 ILogger]: Start minimizeSevpa. Operand 109 states. [2019-05-23 11:16:56,986 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 109 to 104. [2019-05-23 11:16:56,987 INFO L146 ILogger]: Start removeUnreachable. Operand 104 states. [2019-05-23 11:16:56,992 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 104 states to 104 states and 108 transitions. [2019-05-23 11:16:56,992 INFO L146 ILogger]: Start accepts. Automaton has 104 states and 108 transitions. Word has length 91 [2019-05-23 11:16:56,996 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:56,996 INFO L146 ILogger]: Abstraction has 104 states and 108 transitions. [2019-05-23 11:16:56,996 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:16:56,996 INFO L146 ILogger]: Start isEmpty. Operand 104 states and 108 transitions. [2019-05-23 11:16:56,997 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 99 [2019-05-23 11:16:56,998 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:56,998 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-05-23 11:16:56,998 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:56,998 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:56,999 INFO L146 ILogger]: Analyzing trace with hash 624415435, now seen corresponding path program 4 times [2019-05-23 11:16:56,999 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:56,999 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:57,000 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:57,000 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:57,000 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:57,049 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:57,199 INFO L146 ILogger]: Checked inductivity of 73 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-05-23 11:16:57,200 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:57,200 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 11:16:57,212 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:16:57,279 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:16:57,279 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:57,281 INFO L146 ILogger]: Trace formula consists of 171 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:16:57,291 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:57,623 INFO L146 ILogger]: Checked inductivity of 73 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-05-23 11:16:57,644 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:57,644 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2019-05-23 11:16:57,644 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:16:57,645 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:16:57,645 INFO L146 ILogger]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:16:57,645 INFO L146 ILogger]: Start difference. First operand 104 states and 108 transitions. Second operand 13 states. [2019-05-23 11:16:57,839 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:57,839 INFO L146 ILogger]: Finished difference Result 181 states and 189 transitions. [2019-05-23 11:16:57,840 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-05-23 11:16:57,840 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 98 [2019-05-23 11:16:57,840 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:57,841 INFO L146 ILogger]: With dead ends: 181 [2019-05-23 11:16:57,841 INFO L146 ILogger]: Without dead ends: 116 [2019-05-23 11:16:57,842 INFO L146 ILogger]: 0 DeclaredPredicates, 116 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:16:57,843 INFO L146 ILogger]: Start minimizeSevpa. Operand 116 states. [2019-05-23 11:16:57,848 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 116 to 111. [2019-05-23 11:16:57,849 INFO L146 ILogger]: Start removeUnreachable. Operand 111 states. [2019-05-23 11:16:57,849 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 111 states to 111 states and 115 transitions. [2019-05-23 11:16:57,850 INFO L146 ILogger]: Start accepts. Automaton has 111 states and 115 transitions. Word has length 98 [2019-05-23 11:16:57,850 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:57,850 INFO L146 ILogger]: Abstraction has 111 states and 115 transitions. [2019-05-23 11:16:57,850 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:16:57,850 INFO L146 ILogger]: Start isEmpty. Operand 111 states and 115 transitions. [2019-05-23 11:16:57,852 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 106 [2019-05-23 11:16:57,852 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:57,852 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-05-23 11:16:57,853 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:57,853 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:57,853 INFO L146 ILogger]: Analyzing trace with hash -364950251, now seen corresponding path program 5 times [2019-05-23 11:16:57,853 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:57,853 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:57,854 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:57,854 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:57,854 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:57,873 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:58,032 INFO L146 ILogger]: Checked inductivity of 102 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-05-23 11:16:58,032 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:58,033 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 11:16:58,044 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:16:58,166 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-05-23 11:16:58,167 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:58,168 INFO L146 ILogger]: Trace formula consists of 181 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:16:58,171 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:58,320 INFO L146 ILogger]: Checked inductivity of 102 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2019-05-23 11:16:58,344 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:58,344 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7] total 18 [2019-05-23 11:16:58,345 INFO L146 ILogger]: Interpolant automaton has 18 states [2019-05-23 11:16:58,345 INFO L146 ILogger]: Constructing interpolant automaton starting with 18 interpolants. [2019-05-23 11:16:58,346 INFO L146 ILogger]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2019-05-23 11:16:58,346 INFO L146 ILogger]: Start difference. First operand 111 states and 115 transitions. Second operand 18 states. [2019-05-23 11:16:58,956 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:58,956 INFO L146 ILogger]: Finished difference Result 200 states and 209 transitions. [2019-05-23 11:16:58,956 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-05-23 11:16:58,956 INFO L146 ILogger]: Start accepts. Automaton has 18 states. Word has length 105 [2019-05-23 11:16:58,957 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:58,957 INFO L146 ILogger]: With dead ends: 200 [2019-05-23 11:16:58,958 INFO L146 ILogger]: Without dead ends: 135 [2019-05-23 11:16:58,959 INFO L146 ILogger]: 0 DeclaredPredicates, 131 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=220, Invalid=772, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:16:58,959 INFO L146 ILogger]: Start minimizeSevpa. Operand 135 states. [2019-05-23 11:16:58,964 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 135 to 125. [2019-05-23 11:16:58,964 INFO L146 ILogger]: Start removeUnreachable. Operand 125 states. [2019-05-23 11:16:58,965 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 125 states to 125 states and 129 transitions. [2019-05-23 11:16:58,965 INFO L146 ILogger]: Start accepts. Automaton has 125 states and 129 transitions. Word has length 105 [2019-05-23 11:16:58,965 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:58,965 INFO L146 ILogger]: Abstraction has 125 states and 129 transitions. [2019-05-23 11:16:58,965 INFO L146 ILogger]: Interpolant automaton has 18 states. [2019-05-23 11:16:58,966 INFO L146 ILogger]: Start isEmpty. Operand 125 states and 129 transitions. [2019-05-23 11:16:58,967 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 120 [2019-05-23 11:16:58,967 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:58,968 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2019-05-23 11:16:58,968 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:58,968 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:58,968 INFO L146 ILogger]: Analyzing trace with hash -138253954, now seen corresponding path program 6 times [2019-05-23 11:16:58,969 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:58,969 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:58,969 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:58,970 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:58,970 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:58,988 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:59,254 INFO L146 ILogger]: Checked inductivity of 153 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-05-23 11:16:59,255 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:59,255 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 11:16:59,264 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:16:59,325 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-05-23 11:16:59,326 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:59,326 INFO L146 ILogger]: Trace formula consists of 171 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:16:59,329 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:59,579 INFO L146 ILogger]: Checked inductivity of 153 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2019-05-23 11:16:59,598 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:59,598 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7] total 20 [2019-05-23 11:16:59,598 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:16:59,598 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:16:59,599 INFO L146 ILogger]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:16:59,599 INFO L146 ILogger]: Start difference. First operand 125 states and 129 transitions. Second operand 20 states. [2019-05-23 11:17:00,124 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:00,124 INFO L146 ILogger]: Finished difference Result 221 states and 230 transitions. [2019-05-23 11:17:00,124 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-05-23 11:17:00,125 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 119 [2019-05-23 11:17:00,125 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:00,127 INFO L146 ILogger]: With dead ends: 221 [2019-05-23 11:17:00,127 INFO L146 ILogger]: Without dead ends: 149 [2019-05-23 11:17:00,128 INFO L146 ILogger]: 0 DeclaredPredicates, 149 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=285, Invalid=975, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:17:00,129 INFO L146 ILogger]: Start minimizeSevpa. Operand 149 states. [2019-05-23 11:17:00,134 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 149 to 139. [2019-05-23 11:17:00,135 INFO L146 ILogger]: Start removeUnreachable. Operand 139 states. [2019-05-23 11:17:00,136 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 139 states to 139 states and 143 transitions. [2019-05-23 11:17:00,136 INFO L146 ILogger]: Start accepts. Automaton has 139 states and 143 transitions. Word has length 119 [2019-05-23 11:17:00,136 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:00,136 INFO L146 ILogger]: Abstraction has 139 states and 143 transitions. [2019-05-23 11:17:00,137 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:17:00,137 INFO L146 ILogger]: Start isEmpty. Operand 139 states and 143 transitions. [2019-05-23 11:17:00,138 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 134 [2019-05-23 11:17:00,139 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:00,139 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:00,139 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:00,139 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:00,140 INFO L146 ILogger]: Analyzing trace with hash 849053660, now seen corresponding path program 7 times [2019-05-23 11:17:00,140 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:00,140 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:00,141 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:00,141 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:00,141 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:00,161 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:00,431 INFO L146 ILogger]: Checked inductivity of 211 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-05-23 11:17:00,431 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:00,431 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 11:17:00,441 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:00,485 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:00,487 INFO L146 ILogger]: Trace formula consists of 221 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:17:00,490 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:00,600 INFO L146 ILogger]: Checked inductivity of 211 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-05-23 11:17:00,619 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:00,620 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2019-05-23 11:17:00,620 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:17:00,621 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:17:00,621 INFO L146 ILogger]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:17:00,621 INFO L146 ILogger]: Start difference. First operand 139 states and 143 transitions. Second operand 19 states. [2019-05-23 11:17:01,074 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:01,074 INFO L146 ILogger]: Finished difference Result 230 states and 238 transitions. [2019-05-23 11:17:01,081 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:17:01,081 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 133 [2019-05-23 11:17:01,081 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:01,082 INFO L146 ILogger]: With dead ends: 230 [2019-05-23 11:17:01,082 INFO L146 ILogger]: Without dead ends: 151 [2019-05-23 11:17:01,083 INFO L146 ILogger]: 0 DeclaredPredicates, 163 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:17:01,084 INFO L146 ILogger]: Start minimizeSevpa. Operand 151 states. [2019-05-23 11:17:01,087 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 151 to 146. [2019-05-23 11:17:01,088 INFO L146 ILogger]: Start removeUnreachable. Operand 146 states. [2019-05-23 11:17:01,088 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 146 states to 146 states and 150 transitions. [2019-05-23 11:17:01,088 INFO L146 ILogger]: Start accepts. Automaton has 146 states and 150 transitions. Word has length 133 [2019-05-23 11:17:01,089 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:01,089 INFO L146 ILogger]: Abstraction has 146 states and 150 transitions. [2019-05-23 11:17:01,089 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:17:01,089 INFO L146 ILogger]: Start isEmpty. Operand 146 states and 150 transitions. [2019-05-23 11:17:01,091 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 141 [2019-05-23 11:17:01,091 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:01,091 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:01,092 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:01,092 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:01,092 INFO L146 ILogger]: Analyzing trace with hash -1822942894, now seen corresponding path program 8 times [2019-05-23 11:17:01,092 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:01,092 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:01,093 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:01,093 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:01,093 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:01,113 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:01,365 INFO L146 ILogger]: Checked inductivity of 261 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-05-23 11:17:01,366 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:01,366 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 11:17:01,374 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:17:01,412 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:17:01,413 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:01,414 INFO L146 ILogger]: Trace formula consists of 231 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:17:01,415 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:01,474 INFO L146 ILogger]: Checked inductivity of 261 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-05-23 11:17:01,494 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:01,494 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-05-23 11:17:01,494 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:17:01,495 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:17:01,495 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:17:01,495 INFO L146 ILogger]: Start difference. First operand 146 states and 150 transitions. Second operand 21 states. [2019-05-23 11:17:01,819 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:01,820 INFO L146 ILogger]: Finished difference Result 237 states and 245 transitions. [2019-05-23 11:17:01,824 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:17:01,824 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 140 [2019-05-23 11:17:01,825 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:01,825 INFO L146 ILogger]: With dead ends: 237 [2019-05-23 11:17:01,826 INFO L146 ILogger]: Without dead ends: 158 [2019-05-23 11:17:01,827 INFO L146 ILogger]: 0 DeclaredPredicates, 174 GetRequests, 139 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 11:17:01,827 INFO L146 ILogger]: Start minimizeSevpa. Operand 158 states. [2019-05-23 11:17:01,832 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 158 to 153. [2019-05-23 11:17:01,832 INFO L146 ILogger]: Start removeUnreachable. Operand 153 states. [2019-05-23 11:17:01,833 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 153 states to 153 states and 157 transitions. [2019-05-23 11:17:01,833 INFO L146 ILogger]: Start accepts. Automaton has 153 states and 157 transitions. Word has length 140 [2019-05-23 11:17:01,833 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:01,833 INFO L146 ILogger]: Abstraction has 153 states and 157 transitions. [2019-05-23 11:17:01,834 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:17:01,834 INFO L146 ILogger]: Start isEmpty. Operand 153 states and 157 transitions. [2019-05-23 11:17:01,838 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 148 [2019-05-23 11:17:01,838 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:01,838 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:01,839 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:01,839 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:01,839 INFO L146 ILogger]: Analyzing trace with hash -1823402212, now seen corresponding path program 9 times [2019-05-23 11:17:01,839 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:01,839 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:01,840 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:01,840 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:01,840 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:01,863 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:02,920 INFO L146 ILogger]: Checked inductivity of 318 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-05-23 11:17:02,921 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:02,921 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 11:17:02,930 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:17:02,959 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:17:02,959 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:02,960 INFO L146 ILogger]: Trace formula consists of 151 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:17:02,963 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:03,072 INFO L146 ILogger]: Checked inductivity of 318 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2019-05-23 11:17:03,103 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:03,103 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 7] total 26 [2019-05-23 11:17:03,103 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:17:03,104 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:17:03,104 INFO L146 ILogger]: CoverageRelationStatistics Valid=134, Invalid=516, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:17:03,104 INFO L146 ILogger]: Start difference. First operand 153 states and 157 transitions. Second operand 26 states. [2019-05-23 11:17:03,926 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:03,926 INFO L146 ILogger]: Finished difference Result 256 states and 265 transitions. [2019-05-23 11:17:03,926 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-05-23 11:17:03,926 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 147 [2019-05-23 11:17:03,927 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:03,928 INFO L146 ILogger]: With dead ends: 256 [2019-05-23 11:17:03,928 INFO L146 ILogger]: Without dead ends: 177 [2019-05-23 11:17:03,929 INFO L146 ILogger]: 0 DeclaredPredicates, 189 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=540, Invalid=1716, Unknown=0, NotChecked=0, Total=2256 [2019-05-23 11:17:03,930 INFO L146 ILogger]: Start minimizeSevpa. Operand 177 states. [2019-05-23 11:17:03,933 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 177 to 167. [2019-05-23 11:17:03,933 INFO L146 ILogger]: Start removeUnreachable. Operand 167 states. [2019-05-23 11:17:03,934 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 167 states to 167 states and 171 transitions. [2019-05-23 11:17:03,934 INFO L146 ILogger]: Start accepts. Automaton has 167 states and 171 transitions. Word has length 147 [2019-05-23 11:17:03,934 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:03,934 INFO L146 ILogger]: Abstraction has 167 states and 171 transitions. [2019-05-23 11:17:03,934 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:17:03,935 INFO L146 ILogger]: Start isEmpty. Operand 167 states and 171 transitions. [2019-05-23 11:17:03,936 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 162 [2019-05-23 11:17:03,936 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:03,936 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:03,937 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:03,937 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:03,937 INFO L146 ILogger]: Analyzing trace with hash 1962170782, now seen corresponding path program 10 times [2019-05-23 11:17:03,937 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:03,937 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:03,938 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:03,938 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:03,938 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:03,958 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:04,208 INFO L146 ILogger]: Checked inductivity of 397 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:17:04,209 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:04,209 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 11:17:04,218 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:17:04,515 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:17:04,515 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:04,517 INFO L146 ILogger]: Trace formula consists of 261 conjuncts, 22 conjunts are in the unsatisfiable core [2019-05-23 11:17:04,519 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:04,564 INFO L146 ILogger]: Checked inductivity of 397 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:17:04,593 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:04,594 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2019-05-23 11:17:04,594 INFO L146 ILogger]: Interpolant automaton has 25 states [2019-05-23 11:17:04,595 INFO L146 ILogger]: Constructing interpolant automaton starting with 25 interpolants. [2019-05-23 11:17:04,595 INFO L146 ILogger]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:17:04,595 INFO L146 ILogger]: Start difference. First operand 167 states and 171 transitions. Second operand 25 states. [2019-05-23 11:17:05,201 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:05,202 INFO L146 ILogger]: Finished difference Result 265 states and 273 transitions. [2019-05-23 11:17:05,202 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-05-23 11:17:05,202 INFO L146 ILogger]: Start accepts. Automaton has 25 states. Word has length 161 [2019-05-23 11:17:05,203 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:05,204 INFO L146 ILogger]: With dead ends: 265 [2019-05-23 11:17:05,204 INFO L146 ILogger]: Without dead ends: 179 [2019-05-23 11:17:05,205 INFO L146 ILogger]: 0 DeclaredPredicates, 203 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=631, Invalid=1349, Unknown=0, NotChecked=0, Total=1980 [2019-05-23 11:17:05,205 INFO L146 ILogger]: Start minimizeSevpa. Operand 179 states. [2019-05-23 11:17:05,208 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 179 to 174. [2019-05-23 11:17:05,209 INFO L146 ILogger]: Start removeUnreachable. Operand 174 states. [2019-05-23 11:17:05,209 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 174 states to 174 states and 178 transitions. [2019-05-23 11:17:05,210 INFO L146 ILogger]: Start accepts. Automaton has 174 states and 178 transitions. Word has length 161 [2019-05-23 11:17:05,210 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:05,210 INFO L146 ILogger]: Abstraction has 174 states and 178 transitions. [2019-05-23 11:17:05,210 INFO L146 ILogger]: Interpolant automaton has 25 states. [2019-05-23 11:17:05,210 INFO L146 ILogger]: Start isEmpty. Operand 174 states and 178 transitions. [2019-05-23 11:17:05,212 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 169 [2019-05-23 11:17:05,212 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:05,212 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:05,212 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:05,212 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:05,213 INFO L146 ILogger]: Analyzing trace with hash -286212588, now seen corresponding path program 11 times [2019-05-23 11:17:05,213 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:05,213 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:05,214 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:05,214 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:05,214 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:05,233 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:06,207 INFO L146 ILogger]: Checked inductivity of 468 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:17:06,207 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:06,207 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 11:17:06,217 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:17:07,208 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-05-23 11:17:07,208 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:07,211 INFO L146 ILogger]: Trace formula consists of 271 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:17:07,213 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:07,360 INFO L146 ILogger]: Checked inductivity of 468 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2019-05-23 11:17:07,389 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:07,389 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 9] total 32 [2019-05-23 11:17:07,390 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:17:07,390 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:17:07,391 INFO L146 ILogger]: CoverageRelationStatistics Valid=191, Invalid=801, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:17:07,391 INFO L146 ILogger]: Start difference. First operand 174 states and 178 transitions. Second operand 32 states. [2019-05-23 11:17:08,612 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:08,612 INFO L146 ILogger]: Finished difference Result 284 states and 293 transitions. [2019-05-23 11:17:08,613 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-05-23 11:17:08,613 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 168 [2019-05-23 11:17:08,613 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:08,614 INFO L146 ILogger]: With dead ends: 284 [2019-05-23 11:17:08,615 INFO L146 ILogger]: Without dead ends: 198 [2019-05-23 11:17:08,617 INFO L146 ILogger]: 0 DeclaredPredicates, 220 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 641 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=795, Invalid=2745, Unknown=0, NotChecked=0, Total=3540 [2019-05-23 11:17:08,617 INFO L146 ILogger]: Start minimizeSevpa. Operand 198 states. [2019-05-23 11:17:08,621 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 198 to 188. [2019-05-23 11:17:08,621 INFO L146 ILogger]: Start removeUnreachable. Operand 188 states. [2019-05-23 11:17:08,622 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 188 states to 188 states and 192 transitions. [2019-05-23 11:17:08,622 INFO L146 ILogger]: Start accepts. Automaton has 188 states and 192 transitions. Word has length 168 [2019-05-23 11:17:08,623 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:08,623 INFO L146 ILogger]: Abstraction has 188 states and 192 transitions. [2019-05-23 11:17:08,623 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:17:08,623 INFO L146 ILogger]: Start isEmpty. Operand 188 states and 192 transitions. [2019-05-23 11:17:08,625 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 183 [2019-05-23 11:17:08,625 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:08,625 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:08,626 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:08,626 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:08,626 INFO L146 ILogger]: Analyzing trace with hash -752368775, now seen corresponding path program 12 times [2019-05-23 11:17:08,626 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:08,626 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:08,627 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:08,627 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:08,627 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:08,646 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:09,034 INFO L146 ILogger]: Checked inductivity of 568 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2019-05-23 11:17:09,034 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:09,034 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 11:17:09,044 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:17:09,234 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-05-23 11:17:09,235 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:09,239 INFO L146 ILogger]: Trace formula consists of 221 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:17:09,242 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:09,389 INFO L146 ILogger]: Checked inductivity of 568 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2019-05-23 11:17:09,408 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:09,408 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 9] total 34 [2019-05-23 11:17:09,408 INFO L146 ILogger]: Interpolant automaton has 34 states [2019-05-23 11:17:09,408 INFO L146 ILogger]: Constructing interpolant automaton starting with 34 interpolants. [2019-05-23 11:17:09,409 INFO L146 ILogger]: CoverageRelationStatistics Valid=218, Invalid=904, Unknown=0, NotChecked=0, Total=1122 [2019-05-23 11:17:09,409 INFO L146 ILogger]: Start difference. First operand 188 states and 192 transitions. Second operand 34 states. [2019-05-23 11:17:11,098 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:11,098 INFO L146 ILogger]: Finished difference Result 305 states and 314 transitions. [2019-05-23 11:17:11,098 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2019-05-23 11:17:11,099 INFO L146 ILogger]: Start accepts. Automaton has 34 states. Word has length 182 [2019-05-23 11:17:11,099 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:11,100 INFO L146 ILogger]: With dead ends: 305 [2019-05-23 11:17:11,100 INFO L146 ILogger]: Without dead ends: 212 [2019-05-23 11:17:11,102 INFO L146 ILogger]: 0 DeclaredPredicates, 238 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 734 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=920, Invalid=3112, Unknown=0, NotChecked=0, Total=4032 [2019-05-23 11:17:11,102 INFO L146 ILogger]: Start minimizeSevpa. Operand 212 states. [2019-05-23 11:17:11,105 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 212 to 202. [2019-05-23 11:17:11,106 INFO L146 ILogger]: Start removeUnreachable. Operand 202 states. [2019-05-23 11:17:11,106 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 202 states to 202 states and 206 transitions. [2019-05-23 11:17:11,106 INFO L146 ILogger]: Start accepts. Automaton has 202 states and 206 transitions. Word has length 182 [2019-05-23 11:17:11,107 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:11,107 INFO L146 ILogger]: Abstraction has 202 states and 206 transitions. [2019-05-23 11:17:11,107 INFO L146 ILogger]: Interpolant automaton has 34 states. [2019-05-23 11:17:11,107 INFO L146 ILogger]: Start isEmpty. Operand 202 states and 206 transitions. [2019-05-23 11:17:11,109 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 197 [2019-05-23 11:17:11,109 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:11,109 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 13, 13, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:11,109 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:11,110 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:11,110 INFO L146 ILogger]: Analyzing trace with hash 1837383085, now seen corresponding path program 13 times [2019-05-23 11:17:11,110 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:11,110 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:11,111 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:11,111 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:11,111 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:11,130 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:11,567 INFO L146 ILogger]: Checked inductivity of 675 backedges. 0 proven. 559 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2019-05-23 11:17:11,567 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:11,567 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 11:17:11,575 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:11,622 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:11,623 INFO L146 ILogger]: Trace formula consists of 311 conjuncts, 28 conjunts are in the unsatisfiable core [2019-05-23 11:17:11,626 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:11,710 INFO L146 ILogger]: Checked inductivity of 675 backedges. 0 proven. 559 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2019-05-23 11:17:11,728 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:11,728 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2019-05-23 11:17:11,729 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:17:11,729 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:17:11,731 INFO L146 ILogger]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:17:11,731 INFO L146 ILogger]: Start difference. First operand 202 states and 206 transitions. Second operand 31 states. [2019-05-23 11:17:12,249 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:12,250 INFO L146 ILogger]: Finished difference Result 314 states and 322 transitions. [2019-05-23 11:17:12,251 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-05-23 11:17:12,251 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 196 [2019-05-23 11:17:12,251 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:12,252 INFO L146 ILogger]: With dead ends: 314 [2019-05-23 11:17:12,252 INFO L146 ILogger]: Without dead ends: 214 [2019-05-23 11:17:12,254 INFO L146 ILogger]: 0 DeclaredPredicates, 250 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2019-05-23 11:17:12,254 INFO L146 ILogger]: Start minimizeSevpa. Operand 214 states. [2019-05-23 11:17:12,258 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 214 to 209. [2019-05-23 11:17:12,258 INFO L146 ILogger]: Start removeUnreachable. Operand 209 states. [2019-05-23 11:17:12,259 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 209 states to 209 states and 213 transitions. [2019-05-23 11:17:12,259 INFO L146 ILogger]: Start accepts. Automaton has 209 states and 213 transitions. Word has length 196 [2019-05-23 11:17:12,259 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:12,259 INFO L146 ILogger]: Abstraction has 209 states and 213 transitions. [2019-05-23 11:17:12,259 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:17:12,260 INFO L146 ILogger]: Start isEmpty. Operand 209 states and 213 transitions. [2019-05-23 11:17:12,261 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 204 [2019-05-23 11:17:12,261 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:12,261 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 14, 14, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:12,261 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:12,261 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:12,262 INFO L146 ILogger]: Analyzing trace with hash 422663543, now seen corresponding path program 14 times [2019-05-23 11:17:12,262 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:12,262 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:12,263 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:12,263 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:12,263 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:12,282 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:12,778 INFO L146 ILogger]: Checked inductivity of 767 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2019-05-23 11:17:12,779 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:12,779 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 11:17:12,790 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:17:12,838 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:17:12,838 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:12,840 INFO L146 ILogger]: Trace formula consists of 321 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:17:12,842 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:12,911 INFO L146 ILogger]: Checked inductivity of 767 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2019-05-23 11:17:12,932 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:12,932 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2019-05-23 11:17:12,933 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:17:12,933 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:17:12,933 INFO L146 ILogger]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:17:12,933 INFO L146 ILogger]: Start difference. First operand 209 states and 213 transitions. Second operand 33 states. [2019-05-23 11:17:13,507 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:13,507 INFO L146 ILogger]: Finished difference Result 321 states and 329 transitions. [2019-05-23 11:17:13,508 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-05-23 11:17:13,509 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 203 [2019-05-23 11:17:13,509 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:13,510 INFO L146 ILogger]: With dead ends: 321 [2019-05-23 11:17:13,510 INFO L146 ILogger]: Without dead ends: 221 [2019-05-23 11:17:13,512 INFO L146 ILogger]: 0 DeclaredPredicates, 261 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1159, Invalid=2501, Unknown=0, NotChecked=0, Total=3660 [2019-05-23 11:17:13,513 INFO L146 ILogger]: Start minimizeSevpa. Operand 221 states. [2019-05-23 11:17:13,516 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 221 to 216. [2019-05-23 11:17:13,516 INFO L146 ILogger]: Start removeUnreachable. Operand 216 states. [2019-05-23 11:17:13,517 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 216 states to 216 states and 220 transitions. [2019-05-23 11:17:13,517 INFO L146 ILogger]: Start accepts. Automaton has 216 states and 220 transitions. Word has length 203 [2019-05-23 11:17:13,518 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:13,518 INFO L146 ILogger]: Abstraction has 216 states and 220 transitions. [2019-05-23 11:17:13,518 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:17:13,518 INFO L146 ILogger]: Start isEmpty. Operand 216 states and 220 transitions. [2019-05-23 11:17:13,519 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 211 [2019-05-23 11:17:13,519 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:13,520 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 15, 15, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:13,520 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:13,520 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:13,520 INFO L146 ILogger]: Analyzing trace with hash -1818638739, now seen corresponding path program 15 times [2019-05-23 11:17:13,520 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:13,521 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:13,521 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:13,521 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:13,522 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:13,543 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:13,977 INFO L146 ILogger]: Checked inductivity of 866 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2019-05-23 11:17:13,977 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:13,977 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 11:17:13,985 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:17:14,038 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:17:14,038 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:14,039 INFO L146 ILogger]: Trace formula consists of 191 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:17:14,042 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:14,198 INFO L146 ILogger]: Checked inductivity of 866 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 842 trivial. 0 not checked. [2019-05-23 11:17:14,216 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:14,217 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 9] total 40 [2019-05-23 11:17:14,217 INFO L146 ILogger]: Interpolant automaton has 40 states [2019-05-23 11:17:14,217 INFO L146 ILogger]: Constructing interpolant automaton starting with 40 interpolants. [2019-05-23 11:17:14,218 INFO L146 ILogger]: CoverageRelationStatistics Valid=311, Invalid=1249, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:17:14,218 INFO L146 ILogger]: Start difference. First operand 216 states and 220 transitions. Second operand 40 states. [2019-05-23 11:17:15,421 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:15,422 INFO L146 ILogger]: Finished difference Result 340 states and 349 transitions. [2019-05-23 11:17:15,422 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2019-05-23 11:17:15,422 INFO L146 ILogger]: Start accepts. Automaton has 40 states. Word has length 210 [2019-05-23 11:17:15,423 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:15,424 INFO L146 ILogger]: With dead ends: 340 [2019-05-23 11:17:15,424 INFO L146 ILogger]: Without dead ends: 240 [2019-05-23 11:17:15,426 INFO L146 ILogger]: 0 DeclaredPredicates, 278 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1049 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1355, Invalid=4345, Unknown=0, NotChecked=0, Total=5700 [2019-05-23 11:17:15,426 INFO L146 ILogger]: Start minimizeSevpa. Operand 240 states. [2019-05-23 11:17:15,430 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 240 to 230. [2019-05-23 11:17:15,430 INFO L146 ILogger]: Start removeUnreachable. Operand 230 states. [2019-05-23 11:17:15,431 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 230 states to 230 states and 234 transitions. [2019-05-23 11:17:15,431 INFO L146 ILogger]: Start accepts. Automaton has 230 states and 234 transitions. Word has length 210 [2019-05-23 11:17:15,431 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:15,431 INFO L146 ILogger]: Abstraction has 230 states and 234 transitions. [2019-05-23 11:17:15,432 INFO L146 ILogger]: Interpolant automaton has 40 states. [2019-05-23 11:17:15,432 INFO L146 ILogger]: Start isEmpty. Operand 230 states and 234 transitions. [2019-05-23 11:17:15,433 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 225 [2019-05-23 11:17:15,433 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:15,433 INFO L146 ILogger]: trace histogram [16, 16, 16, 16, 16, 16, 16, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:15,433 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:15,434 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:15,434 INFO L146 ILogger]: Analyzing trace with hash 1723701547, now seen corresponding path program 16 times [2019-05-23 11:17:15,434 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:15,434 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:15,435 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:15,435 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:15,435 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:15,455 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:15,928 INFO L146 ILogger]: Checked inductivity of 994 backedges. 0 proven. 856 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2019-05-23 11:17:15,928 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:15,929 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 11:17:15,937 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:17:16,820 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:17:16,821 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:16,823 INFO L146 ILogger]: Trace formula consists of 351 conjuncts, 34 conjunts are in the unsatisfiable core [2019-05-23 11:17:16,826 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:17,497 INFO L146 ILogger]: Checked inductivity of 994 backedges. 0 proven. 856 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2019-05-23 11:17:17,555 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:17,555 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2019-05-23 11:17:17,556 INFO L146 ILogger]: Interpolant automaton has 37 states [2019-05-23 11:17:17,557 INFO L146 ILogger]: Constructing interpolant automaton starting with 37 interpolants. [2019-05-23 11:17:17,558 INFO L146 ILogger]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:17:17,558 INFO L146 ILogger]: Start difference. First operand 230 states and 234 transitions. Second operand 37 states. [2019-05-23 11:17:18,542 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:18,542 INFO L146 ILogger]: Finished difference Result 349 states and 357 transitions. [2019-05-23 11:17:18,543 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2019-05-23 11:17:18,543 INFO L146 ILogger]: Start accepts. Automaton has 37 states. Word has length 224 [2019-05-23 11:17:18,543 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:18,545 INFO L146 ILogger]: With dead ends: 349 [2019-05-23 11:17:18,545 INFO L146 ILogger]: Without dead ends: 242 [2019-05-23 11:17:18,547 INFO L146 ILogger]: 0 DeclaredPredicates, 290 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1483, Invalid=3209, Unknown=0, NotChecked=0, Total=4692 [2019-05-23 11:17:18,547 INFO L146 ILogger]: Start minimizeSevpa. Operand 242 states. [2019-05-23 11:17:18,551 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 242 to 237. [2019-05-23 11:17:18,551 INFO L146 ILogger]: Start removeUnreachable. Operand 237 states. [2019-05-23 11:17:18,552 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 237 states to 237 states and 241 transitions. [2019-05-23 11:17:18,552 INFO L146 ILogger]: Start accepts. Automaton has 237 states and 241 transitions. Word has length 224 [2019-05-23 11:17:18,553 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:18,553 INFO L146 ILogger]: Abstraction has 237 states and 241 transitions. [2019-05-23 11:17:18,553 INFO L146 ILogger]: Interpolant automaton has 37 states. [2019-05-23 11:17:18,553 INFO L146 ILogger]: Start isEmpty. Operand 237 states and 241 transitions. [2019-05-23 11:17:18,554 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 232 [2019-05-23 11:17:18,554 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:18,555 INFO L146 ILogger]: trace histogram [17, 17, 17, 17, 17, 17, 17, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:18,555 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:18,555 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:18,556 INFO L146 ILogger]: Analyzing trace with hash -1015251467, now seen corresponding path program 17 times [2019-05-23 11:17:18,556 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:18,556 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:18,556 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:18,557 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:18,557 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:18,577 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:20,421 INFO L146 ILogger]: Checked inductivity of 1107 backedges. 0 proven. 969 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2019-05-23 11:17:20,421 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:20,421 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 11:17:20,431 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:17:28,919 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2019-05-23 11:17:28,919 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:28,927 INFO L146 ILogger]: Trace formula consists of 361 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:17:28,929 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:29,137 INFO L146 ILogger]: Checked inductivity of 1107 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1061 trivial. 0 not checked. [2019-05-23 11:17:29,159 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:29,159 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 11] total 46 [2019-05-23 11:17:29,160 INFO L146 ILogger]: Interpolant automaton has 46 states [2019-05-23 11:17:29,160 INFO L146 ILogger]: Constructing interpolant automaton starting with 46 interpolants. [2019-05-23 11:17:29,161 INFO L146 ILogger]: CoverageRelationStatistics Valid=394, Invalid=1676, Unknown=0, NotChecked=0, Total=2070 [2019-05-23 11:17:29,161 INFO L146 ILogger]: Start difference. First operand 237 states and 241 transitions. Second operand 46 states. [2019-05-23 11:17:30,650 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:30,650 INFO L146 ILogger]: Finished difference Result 368 states and 377 transitions. [2019-05-23 11:17:30,651 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2019-05-23 11:17:30,651 INFO L146 ILogger]: Start accepts. Automaton has 46 states. Word has length 231 [2019-05-23 11:17:30,652 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:30,652 INFO L146 ILogger]: With dead ends: 368 [2019-05-23 11:17:30,653 INFO L146 ILogger]: Without dead ends: 261 [2019-05-23 11:17:30,655 INFO L146 ILogger]: 0 DeclaredPredicates, 309 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1442 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1740, Invalid=5916, Unknown=0, NotChecked=0, Total=7656 [2019-05-23 11:17:30,656 INFO L146 ILogger]: Start minimizeSevpa. Operand 261 states. [2019-05-23 11:17:30,659 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 261 to 251. [2019-05-23 11:17:30,660 INFO L146 ILogger]: Start removeUnreachable. Operand 251 states. [2019-05-23 11:17:30,661 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 251 states to 251 states and 255 transitions. [2019-05-23 11:17:30,661 INFO L146 ILogger]: Start accepts. Automaton has 251 states and 255 transitions. Word has length 231 [2019-05-23 11:17:30,661 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:30,661 INFO L146 ILogger]: Abstraction has 251 states and 255 transitions. [2019-05-23 11:17:30,661 INFO L146 ILogger]: Interpolant automaton has 46 states. [2019-05-23 11:17:30,661 INFO L146 ILogger]: Start isEmpty. Operand 251 states and 255 transitions. [2019-05-23 11:17:30,662 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 246 [2019-05-23 11:17:30,662 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:30,662 INFO L146 ILogger]: trace histogram [18, 18, 18, 18, 18, 18, 18, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:30,663 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:30,663 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:30,663 INFO L146 ILogger]: Analyzing trace with hash -2075393147, now seen corresponding path program 18 times [2019-05-23 11:17:30,663 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:30,663 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:30,664 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:30,664 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:30,664 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:30,684 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:32,177 INFO L146 ILogger]: Checked inductivity of 1256 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2019-05-23 11:17:32,177 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:32,178 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 11:17:32,186 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:17:32,589 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2019-05-23 11:17:32,589 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:32,591 INFO L146 ILogger]: Trace formula consists of 271 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:17:32,593 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:32,815 INFO L146 ILogger]: Checked inductivity of 1256 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1210 trivial. 0 not checked. [2019-05-23 11:17:32,835 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:32,835 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 11] total 48 [2019-05-23 11:17:32,836 INFO L146 ILogger]: Interpolant automaton has 48 states [2019-05-23 11:17:32,836 INFO L146 ILogger]: Constructing interpolant automaton starting with 48 interpolants. [2019-05-23 11:17:32,837 INFO L146 ILogger]: CoverageRelationStatistics Valid=433, Invalid=1823, Unknown=0, NotChecked=0, Total=2256 [2019-05-23 11:17:32,837 INFO L146 ILogger]: Start difference. First operand 251 states and 255 transitions. Second operand 48 states. [2019-05-23 11:17:35,086 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:35,087 INFO L146 ILogger]: Finished difference Result 389 states and 398 transitions. [2019-05-23 11:17:35,087 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2019-05-23 11:17:35,087 INFO L146 ILogger]: Start accepts. Automaton has 48 states. Word has length 245 [2019-05-23 11:17:35,087 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:35,088 INFO L146 ILogger]: With dead ends: 389 [2019-05-23 11:17:35,089 INFO L146 ILogger]: Without dead ends: 275 [2019-05-23 11:17:35,092 INFO L146 ILogger]: 0 DeclaredPredicates, 327 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1579 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1925, Invalid=6447, Unknown=0, NotChecked=0, Total=8372 [2019-05-23 11:17:35,092 INFO L146 ILogger]: Start minimizeSevpa. Operand 275 states. [2019-05-23 11:17:35,096 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 275 to 265. [2019-05-23 11:17:35,096 INFO L146 ILogger]: Start removeUnreachable. Operand 265 states. [2019-05-23 11:17:35,097 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 265 states to 265 states and 269 transitions. [2019-05-23 11:17:35,097 INFO L146 ILogger]: Start accepts. Automaton has 265 states and 269 transitions. Word has length 245 [2019-05-23 11:17:35,098 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:35,098 INFO L146 ILogger]: Abstraction has 265 states and 269 transitions. [2019-05-23 11:17:35,098 INFO L146 ILogger]: Interpolant automaton has 48 states. [2019-05-23 11:17:35,098 INFO L146 ILogger]: Start isEmpty. Operand 265 states and 269 transitions. [2019-05-23 11:17:35,099 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 260 [2019-05-23 11:17:35,099 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:35,100 INFO L146 ILogger]: trace histogram [19, 19, 19, 19, 19, 19, 19, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:35,100 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:35,100 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:35,100 INFO L146 ILogger]: Analyzing trace with hash -1806411709, now seen corresponding path program 19 times [2019-05-23 11:17:35,100 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:35,100 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:35,101 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:35,101 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:35,101 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:35,121 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:35,839 INFO L146 ILogger]: Checked inductivity of 1412 backedges. 0 proven. 1216 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2019-05-23 11:17:35,840 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:35,840 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 11:17:35,849 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:35,908 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:35,909 INFO L146 ILogger]: Trace formula consists of 401 conjuncts, 40 conjunts are in the unsatisfiable core [2019-05-23 11:17:35,913 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:36,015 INFO L146 ILogger]: Checked inductivity of 1412 backedges. 0 proven. 1216 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2019-05-23 11:17:36,033 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:36,033 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2019-05-23 11:17:36,034 INFO L146 ILogger]: Interpolant automaton has 43 states [2019-05-23 11:17:36,034 INFO L146 ILogger]: Constructing interpolant automaton starting with 43 interpolants. [2019-05-23 11:17:36,034 INFO L146 ILogger]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2019-05-23 11:17:36,034 INFO L146 ILogger]: Start difference. First operand 265 states and 269 transitions. Second operand 43 states. [2019-05-23 11:17:37,210 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:37,211 INFO L146 ILogger]: Finished difference Result 398 states and 406 transitions. [2019-05-23 11:17:37,211 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2019-05-23 11:17:37,211 INFO L146 ILogger]: Start accepts. Automaton has 43 states. Word has length 259 [2019-05-23 11:17:37,212 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:37,212 INFO L146 ILogger]: With dead ends: 398 [2019-05-23 11:17:37,213 INFO L146 ILogger]: Without dead ends: 277 [2019-05-23 11:17:37,213 INFO L146 ILogger]: 0 DeclaredPredicates, 337 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1223 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2044, Invalid=4436, Unknown=0, NotChecked=0, Total=6480 [2019-05-23 11:17:37,214 INFO L146 ILogger]: Start minimizeSevpa. Operand 277 states. [2019-05-23 11:17:37,217 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 277 to 272. [2019-05-23 11:17:37,218 INFO L146 ILogger]: Start removeUnreachable. Operand 272 states. [2019-05-23 11:17:37,218 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 272 states to 272 states and 276 transitions. [2019-05-23 11:17:37,219 INFO L146 ILogger]: Start accepts. Automaton has 272 states and 276 transitions. Word has length 259 [2019-05-23 11:17:37,219 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:37,219 INFO L146 ILogger]: Abstraction has 272 states and 276 transitions. [2019-05-23 11:17:37,219 INFO L146 ILogger]: Interpolant automaton has 43 states. [2019-05-23 11:17:37,219 INFO L146 ILogger]: Start isEmpty. Operand 272 states and 276 transitions. [2019-05-23 11:17:37,221 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 267 [2019-05-23 11:17:37,221 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:37,221 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 20, 20, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:37,221 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:37,222 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:37,222 INFO L146 ILogger]: Analyzing trace with hash -1762824391, now seen corresponding path program 20 times [2019-05-23 11:17:37,222 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:37,222 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:37,223 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:37,223 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:37,223 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:37,245 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:38,160 INFO L146 ILogger]: Checked inductivity of 1546 backedges. 0 proven. 1350 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2019-05-23 11:17:38,160 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:38,160 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 11:17:38,171 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:17:38,242 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:17:38,242 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:38,244 INFO L146 ILogger]: Trace formula consists of 411 conjuncts, 42 conjunts are in the unsatisfiable core [2019-05-23 11:17:38,247 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:38,409 INFO L146 ILogger]: Checked inductivity of 1546 backedges. 0 proven. 1350 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2019-05-23 11:17:38,428 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:38,429 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2019-05-23 11:17:38,429 INFO L146 ILogger]: Interpolant automaton has 45 states [2019-05-23 11:17:38,429 INFO L146 ILogger]: Constructing interpolant automaton starting with 45 interpolants. [2019-05-23 11:17:38,430 INFO L146 ILogger]: CoverageRelationStatistics Valid=528, Invalid=1452, Unknown=0, NotChecked=0, Total=1980 [2019-05-23 11:17:38,430 INFO L146 ILogger]: Start difference. First operand 272 states and 276 transitions. Second operand 45 states. [2019-05-23 11:17:39,768 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:39,768 INFO L146 ILogger]: Finished difference Result 405 states and 413 transitions. [2019-05-23 11:17:39,770 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2019-05-23 11:17:39,770 INFO L146 ILogger]: Start accepts. Automaton has 45 states. Word has length 266 [2019-05-23 11:17:39,771 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:39,772 INFO L146 ILogger]: With dead ends: 405 [2019-05-23 11:17:39,772 INFO L146 ILogger]: Without dead ends: 284 [2019-05-23 11:17:39,773 INFO L146 ILogger]: 0 DeclaredPredicates, 348 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2251, Invalid=4889, Unknown=0, NotChecked=0, Total=7140 [2019-05-23 11:17:39,774 INFO L146 ILogger]: Start minimizeSevpa. Operand 284 states. [2019-05-23 11:17:39,777 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 284 to 279. [2019-05-23 11:17:39,778 INFO L146 ILogger]: Start removeUnreachable. Operand 279 states. [2019-05-23 11:17:39,778 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 279 states to 279 states and 283 transitions. [2019-05-23 11:17:39,779 INFO L146 ILogger]: Start accepts. Automaton has 279 states and 283 transitions. Word has length 266 [2019-05-23 11:17:39,779 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:39,779 INFO L146 ILogger]: Abstraction has 279 states and 283 transitions. [2019-05-23 11:17:39,779 INFO L146 ILogger]: Interpolant automaton has 45 states. [2019-05-23 11:17:39,779 INFO L146 ILogger]: Start isEmpty. Operand 279 states and 283 transitions. [2019-05-23 11:17:39,780 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 274 [2019-05-23 11:17:39,781 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:39,781 INFO L146 ILogger]: trace histogram [21, 21, 21, 21, 21, 21, 21, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:39,781 INFO L146 ILogger]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:39,781 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:39,782 INFO L146 ILogger]: Analyzing trace with hash 1383118723, now seen corresponding path program 21 times [2019-05-23 11:17:39,782 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:39,782 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:39,782 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:39,783 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:39,783 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:39,804 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:40,582 INFO L146 ILogger]: Checked inductivity of 1687 backedges. 0 proven. 1491 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2019-05-23 11:17:40,582 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:40,582 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:40,592 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:17:40,701 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-05-23 11:17:40,701 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:40,703 INFO L146 ILogger]: Trace formula consists of 231 conjuncts, 22 conjunts are in the unsatisfiable core [2019-05-23 11:17:40,708 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:41,212 INFO L146 ILogger]: Checked inductivity of 1687 backedges. 29 proven. 46 refuted. 0 times theorem prover too weak. 1612 trivial. 0 not checked. [2019-05-23 11:17:41,241 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:41,241 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 14] total 57 [2019-05-23 11:17:41,242 INFO L146 ILogger]: Interpolant automaton has 57 states [2019-05-23 11:17:41,242 INFO L146 ILogger]: Constructing interpolant automaton starting with 57 interpolants. [2019-05-23 11:17:41,243 INFO L146 ILogger]: CoverageRelationStatistics Valid=579, Invalid=2613, Unknown=0, NotChecked=0, Total=3192 [2019-05-23 11:17:41,243 INFO L146 ILogger]: Start difference. First operand 279 states and 283 transitions. Second operand 57 states. [2019-05-23 11:17:43,738 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:43,739 INFO L146 ILogger]: Finished difference Result 424 states and 433 transitions. [2019-05-23 11:17:43,739 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2019-05-23 11:17:43,739 INFO L146 ILogger]: Start accepts. Automaton has 57 states. Word has length 273 [2019-05-23 11:17:43,739 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:43,740 INFO L146 ILogger]: With dead ends: 424 [2019-05-23 11:17:43,740 INFO L146 ILogger]: Without dead ends: 303 [2019-05-23 11:17:43,741 INFO L146 ILogger]: 0 DeclaredPredicates, 370 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2540 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2595, Invalid=9395, Unknown=0, NotChecked=0, Total=11990 [2019-05-23 11:17:43,742 INFO L146 ILogger]: Start minimizeSevpa. Operand 303 states. [2019-05-23 11:17:43,746 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 303 to 293. [2019-05-23 11:17:43,747 INFO L146 ILogger]: Start removeUnreachable. Operand 293 states. [2019-05-23 11:17:43,747 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 293 states to 293 states and 297 transitions. [2019-05-23 11:17:43,747 INFO L146 ILogger]: Start accepts. Automaton has 293 states and 297 transitions. Word has length 273 [2019-05-23 11:17:43,748 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:43,748 INFO L146 ILogger]: Abstraction has 293 states and 297 transitions. [2019-05-23 11:17:43,748 INFO L146 ILogger]: Interpolant automaton has 57 states. [2019-05-23 11:17:43,748 INFO L146 ILogger]: Start isEmpty. Operand 293 states and 297 transitions. [2019-05-23 11:17:43,749 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 288 [2019-05-23 11:17:43,749 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:43,749 INFO L146 ILogger]: trace histogram [22, 22, 22, 22, 22, 22, 22, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:43,749 INFO L146 ILogger]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:43,749 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:43,750 INFO L146 ILogger]: Analyzing trace with hash 1470347198, now seen corresponding path program 22 times [2019-05-23 11:17:43,750 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:43,750 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:43,750 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:43,750 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:43,751 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:43,772 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:44,507 INFO L146 ILogger]: Checked inductivity of 1864 backedges. 0 proven. 1639 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2019-05-23 11:17:44,507 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:44,507 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:44,517 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:17:49,525 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:17:49,525 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:49,530 INFO L146 ILogger]: Trace formula consists of 441 conjuncts, 46 conjunts are in the unsatisfiable core [2019-05-23 11:17:49,534 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:49,674 INFO L146 ILogger]: Checked inductivity of 1864 backedges. 0 proven. 1639 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2019-05-23 11:17:49,695 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:49,695 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 49 [2019-05-23 11:17:49,696 INFO L146 ILogger]: Interpolant automaton has 49 states [2019-05-23 11:17:49,696 INFO L146 ILogger]: Constructing interpolant automaton starting with 49 interpolants. [2019-05-23 11:17:49,696 INFO L146 ILogger]: CoverageRelationStatistics Valid=624, Invalid=1728, Unknown=0, NotChecked=0, Total=2352 [2019-05-23 11:17:49,697 INFO L146 ILogger]: Start difference. First operand 293 states and 297 transitions. Second operand 49 states. [2019-05-23 11:17:50,955 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:50,955 INFO L146 ILogger]: Finished difference Result 433 states and 441 transitions. [2019-05-23 11:17:50,956 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2019-05-23 11:17:50,956 INFO L146 ILogger]: Start accepts. Automaton has 49 states. Word has length 287 [2019-05-23 11:17:50,956 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:50,958 INFO L146 ILogger]: With dead ends: 433 [2019-05-23 11:17:50,958 INFO L146 ILogger]: Without dead ends: 305 [2019-05-23 11:17:50,959 INFO L146 ILogger]: 0 DeclaredPredicates, 377 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1616 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2695, Invalid=5861, Unknown=0, NotChecked=0, Total=8556 [2019-05-23 11:17:50,960 INFO L146 ILogger]: Start minimizeSevpa. Operand 305 states. [2019-05-23 11:17:50,964 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 305 to 300. [2019-05-23 11:17:50,964 INFO L146 ILogger]: Start removeUnreachable. Operand 300 states. [2019-05-23 11:17:50,965 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 300 states to 300 states and 304 transitions. [2019-05-23 11:17:50,965 INFO L146 ILogger]: Start accepts. Automaton has 300 states and 304 transitions. Word has length 287 [2019-05-23 11:17:50,965 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:50,965 INFO L146 ILogger]: Abstraction has 300 states and 304 transitions. [2019-05-23 11:17:50,965 INFO L146 ILogger]: Interpolant automaton has 49 states. [2019-05-23 11:17:50,966 INFO L146 ILogger]: Start isEmpty. Operand 300 states and 304 transitions. [2019-05-23 11:17:50,967 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 295 [2019-05-23 11:17:50,967 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:50,967 INFO L146 ILogger]: trace histogram [23, 23, 23, 23, 23, 23, 23, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:50,968 INFO L146 ILogger]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:50,968 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:50,968 INFO L146 ILogger]: Analyzing trace with hash 2066047412, now seen corresponding path program 23 times [2019-05-23 11:17:50,968 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:50,968 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:50,969 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:50,969 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:50,970 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:51,004 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:52,729 INFO L146 ILogger]: Checked inductivity of 2019 backedges. 0 proven. 1794 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2019-05-23 11:17:52,729 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:52,729 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:52,738 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1