java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/array-examples/standard_two_index_01_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:20:10,820 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:20:10,826 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:20:10,844 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:20:10,845 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:20:10,846 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:20:10,848 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:20:10,851 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:20:10,854 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:20:10,854 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:20:10,862 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:20:10,862 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:20:10,863 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:20:10,869 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:20:10,870 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:20:10,872 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:20:10,873 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:20:10,875 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:20:10,878 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:20:10,880 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:20:10,881 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:20:10,882 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:20:10,884 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:20:10,885 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:20:10,885 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:20:10,886 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:20:10,886 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:20:10,888 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:20:10,889 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:20:10,889 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:20:10,893 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:20:10,895 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:20:10,896 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:20:10,897 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:20:10,898 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:20:10,898 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:20:10,898 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:20:10,900 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:20:10,901 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:20:10,902 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:20:10,926 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:20:10,926 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:20:10,927 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:20:10,928 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:20:10,928 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:20:10,928 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:20:10,928 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:20:10,929 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:20:10,929 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:20:10,929 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:20:10,929 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:20:10,930 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:20:10,930 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:20:10,930 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:20:10,930 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:20:10,930 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:20:10,931 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:20:10,931 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:20:10,931 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:20:10,931 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:20:10,932 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:20:10,933 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:20:10,933 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:20:10,933 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:20:10,934 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:20:10,934 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:20:10,934 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:20:10,934 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:20:10,934 INFO L146 ILogger]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Command for external solver -> z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement [2019-05-23 11:20:10,974 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:20:10,989 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:20:10,994 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:20:10,995 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:20:10,996 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:20:10,997 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_two_index_01_true-unreach-call.i [2019-05-23 11:20:11,062 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/739b14ae1/ccaf53bd23a0418688057f7344cfb5d2/FLAG097c45897 [2019-05-23 11:20:11,512 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:20:11,513 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_two_index_01_true-unreach-call.i [2019-05-23 11:20:11,519 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/739b14ae1/ccaf53bd23a0418688057f7344cfb5d2/FLAG097c45897 [2019-05-23 11:20:11,881 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/739b14ae1/ccaf53bd23a0418688057f7344cfb5d2 [2019-05-23 11:20:11,890 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:20:11,891 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:20:11,893 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:20:11,893 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:20:11,896 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:20:11,897 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:20:11" (1/1) ... [2019-05-23 11:20:11,901 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ce63bce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:11, skipping insertion in model container [2019-05-23 11:20:11,901 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:20:11" (1/1) ... [2019-05-23 11:20:11,909 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:20:11,925 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:20:12,108 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:20:12,113 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:20:12,138 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:20:12,160 INFO L146 ILogger]: Completed translation [2019-05-23 11:20:12,160 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:12 WrapperNode [2019-05-23 11:20:12,161 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:20:12,162 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:20:12,162 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:20:12,162 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:20:12,171 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:12" (1/1) ... [2019-05-23 11:20:12,180 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:12" (1/1) ... [2019-05-23 11:20:12,208 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:20:12,209 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:20:12,209 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:20:12,209 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:20:12,218 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:12" (1/1) ... [2019-05-23 11:20:12,219 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:12" (1/1) ... [2019-05-23 11:20:12,220 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:12" (1/1) ... [2019-05-23 11:20:12,221 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:12" (1/1) ... [2019-05-23 11:20:12,226 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:12" (1/1) ... [2019-05-23 11:20:12,231 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:12" (1/1) ... [2019-05-23 11:20:12,232 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:12" (1/1) ... [2019-05-23 11:20:12,235 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:20:12,235 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:20:12,235 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:20:12,235 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:20:12,236 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 [2019-05-23 11:20:12,381 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:20:12,381 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:20:12,381 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:20:12,381 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:20:12,381 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:20:12,382 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:20:12,796 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:20:12,796 INFO L146 ILogger]: Removed 9 assume(true) statements. [2019-05-23 11:20:12,797 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:20:12 BoogieIcfgContainer [2019-05-23 11:20:12,798 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:20:12,799 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:20:12,799 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:20:12,802 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:20:12,802 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:20:11" (1/3) ... [2019-05-23 11:20:12,803 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74dcfff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:20:12, skipping insertion in model container [2019-05-23 11:20:12,803 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:12" (2/3) ... [2019-05-23 11:20:12,804 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74dcfff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:20:12, skipping insertion in model container [2019-05-23 11:20:12,804 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:20:12" (3/3) ... [2019-05-23 11:20:12,806 INFO L146 ILogger]: Analyzing ICFG standard_two_index_01_true-unreach-call.i [2019-05-23 11:20:12,816 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:20:12,824 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:20:12,842 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:20:12,871 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:20:12,871 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:20:12,871 INFO L146 ILogger]: Hoare is true [2019-05-23 11:20:12,871 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:20:12,872 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:20:12,872 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:20:12,872 INFO L146 ILogger]: Difference is false [2019-05-23 11:20:12,872 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:20:12,872 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:20:12,886 INFO L146 ILogger]: Start isEmpty. Operand 43 states. [2019-05-23 11:20:12,892 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 22 [2019-05-23 11:20:12,893 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:12,894 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:12,896 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:12,902 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:12,902 INFO L146 ILogger]: Analyzing trace with hash -1541380129, now seen corresponding path program 1 times [2019-05-23 11:20:12,904 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:12,904 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:12,948 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:12,949 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:12,949 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:12,984 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:13,024 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:13,027 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:20:13,027 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:20:13,031 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:20:13,044 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:20:13,045 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:20:13,047 INFO L146 ILogger]: Start difference. First operand 43 states. Second operand 2 states. [2019-05-23 11:20:13,066 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:13,067 INFO L146 ILogger]: Finished difference Result 73 states and 83 transitions. [2019-05-23 11:20:13,067 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:20:13,069 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 21 [2019-05-23 11:20:13,069 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:13,079 INFO L146 ILogger]: With dead ends: 73 [2019-05-23 11:20:13,080 INFO L146 ILogger]: Without dead ends: 35 [2019-05-23 11:20:13,083 INFO L146 ILogger]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:20:13,098 INFO L146 ILogger]: Start minimizeSevpa. Operand 35 states. [2019-05-23 11:20:13,111 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-05-23 11:20:13,113 INFO L146 ILogger]: Start removeUnreachable. Operand 35 states. [2019-05-23 11:20:13,114 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2019-05-23 11:20:13,115 INFO L146 ILogger]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 21 [2019-05-23 11:20:13,116 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:13,116 INFO L146 ILogger]: Abstraction has 35 states and 37 transitions. [2019-05-23 11:20:13,116 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:20:13,117 INFO L146 ILogger]: Start isEmpty. Operand 35 states and 37 transitions. [2019-05-23 11:20:13,117 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 22 [2019-05-23 11:20:13,118 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:13,118 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:13,118 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:13,119 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:13,119 INFO L146 ILogger]: Analyzing trace with hash 805843927, now seen corresponding path program 1 times [2019-05-23 11:20:13,119 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:13,119 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:13,120 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:13,120 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:13,121 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:13,135 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:13,192 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:13,193 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:20:13,193 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:20:13,195 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:20:13,195 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:20:13,195 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:20:13,195 INFO L146 ILogger]: Start difference. First operand 35 states and 37 transitions. Second operand 3 states. [2019-05-23 11:20:13,336 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:13,337 INFO L146 ILogger]: Finished difference Result 79 states and 84 transitions. [2019-05-23 11:20:13,337 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:20:13,337 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 21 [2019-05-23 11:20:13,338 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:13,339 INFO L146 ILogger]: With dead ends: 79 [2019-05-23 11:20:13,339 INFO L146 ILogger]: Without dead ends: 57 [2019-05-23 11:20:13,340 INFO L146 ILogger]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:20:13,340 INFO L146 ILogger]: Start minimizeSevpa. Operand 57 states. [2019-05-23 11:20:13,345 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 57 to 37. [2019-05-23 11:20:13,345 INFO L146 ILogger]: Start removeUnreachable. Operand 37 states. [2019-05-23 11:20:13,346 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2019-05-23 11:20:13,347 INFO L146 ILogger]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 21 [2019-05-23 11:20:13,347 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:13,347 INFO L146 ILogger]: Abstraction has 37 states and 39 transitions. [2019-05-23 11:20:13,347 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:20:13,348 INFO L146 ILogger]: Start isEmpty. Operand 37 states and 39 transitions. [2019-05-23 11:20:13,349 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 33 [2019-05-23 11:20:13,349 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:13,349 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:13,349 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:13,349 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:13,350 INFO L146 ILogger]: Analyzing trace with hash 876855147, now seen corresponding path program 1 times [2019-05-23 11:20:13,350 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:13,350 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:13,351 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:13,351 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:13,351 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:13,380 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:13,454 INFO L146 ILogger]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:20:13,455 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:13,455 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:13,474 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:13,524 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:13,526 INFO L146 ILogger]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:20:13,532 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:13,586 INFO L146 ILogger]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:20:13,619 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:13,619 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-05-23 11:20:13,620 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:20:13,620 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:20:13,621 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:20:13,621 INFO L146 ILogger]: Start difference. First operand 37 states and 39 transitions. Second operand 5 states. [2019-05-23 11:20:14,058 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:14,059 INFO L146 ILogger]: Finished difference Result 104 states and 109 transitions. [2019-05-23 11:20:14,062 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:20:14,062 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 32 [2019-05-23 11:20:14,062 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:14,063 INFO L146 ILogger]: With dead ends: 104 [2019-05-23 11:20:14,064 INFO L146 ILogger]: Without dead ends: 81 [2019-05-23 11:20:14,065 INFO L146 ILogger]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:20:14,066 INFO L146 ILogger]: Start minimizeSevpa. Operand 81 states. [2019-05-23 11:20:14,072 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 81 to 48. [2019-05-23 11:20:14,072 INFO L146 ILogger]: Start removeUnreachable. Operand 48 states. [2019-05-23 11:20:14,073 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2019-05-23 11:20:14,073 INFO L146 ILogger]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 32 [2019-05-23 11:20:14,073 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:14,074 INFO L146 ILogger]: Abstraction has 48 states and 50 transitions. [2019-05-23 11:20:14,074 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:20:14,074 INFO L146 ILogger]: Start isEmpty. Operand 48 states and 50 transitions. [2019-05-23 11:20:14,075 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 44 [2019-05-23 11:20:14,075 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:14,075 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:20:14,075 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:14,076 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:14,076 INFO L146 ILogger]: Analyzing trace with hash 1535934897, now seen corresponding path program 2 times [2019-05-23 11:20:14,076 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:14,076 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:14,077 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:14,077 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:14,077 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:14,100 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:14,246 INFO L146 ILogger]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-05-23 11:20:14,246 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:14,246 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:14,264 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:14,315 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:14,315 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:14,317 INFO L146 ILogger]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:20:14,320 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:14,422 INFO L146 ILogger]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-05-23 11:20:14,451 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:14,451 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-05-23 11:20:14,452 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:20:14,452 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:20:14,453 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:20:14,453 INFO L146 ILogger]: Start difference. First operand 48 states and 50 transitions. Second operand 6 states. [2019-05-23 11:20:14,729 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:14,730 INFO L146 ILogger]: Finished difference Result 134 states and 139 transitions. [2019-05-23 11:20:14,734 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:20:14,735 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 43 [2019-05-23 11:20:14,735 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:14,736 INFO L146 ILogger]: With dead ends: 134 [2019-05-23 11:20:14,736 INFO L146 ILogger]: Without dead ends: 105 [2019-05-23 11:20:14,737 INFO L146 ILogger]: 0 DeclaredPredicates, 47 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:20:14,737 INFO L146 ILogger]: Start minimizeSevpa. Operand 105 states. [2019-05-23 11:20:14,748 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 105 to 59. [2019-05-23 11:20:14,748 INFO L146 ILogger]: Start removeUnreachable. Operand 59 states. [2019-05-23 11:20:14,749 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2019-05-23 11:20:14,749 INFO L146 ILogger]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 43 [2019-05-23 11:20:14,750 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:14,750 INFO L146 ILogger]: Abstraction has 59 states and 61 transitions. [2019-05-23 11:20:14,750 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:20:14,750 INFO L146 ILogger]: Start isEmpty. Operand 59 states and 61 transitions. [2019-05-23 11:20:14,751 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 55 [2019-05-23 11:20:14,752 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:14,752 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:20:14,752 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:14,752 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:14,753 INFO L146 ILogger]: Analyzing trace with hash 520789637, now seen corresponding path program 3 times [2019-05-23 11:20:14,753 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:14,753 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:14,754 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:14,754 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:14,754 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:14,779 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:14,956 INFO L146 ILogger]: Checked inductivity of 39 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-05-23 11:20:14,957 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:14,957 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:14,974 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:15,025 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:20:15,026 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:15,026 INFO L146 ILogger]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:20:15,029 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:15,044 INFO L146 ILogger]: Checked inductivity of 39 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-05-23 11:20:15,067 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:15,068 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-05-23 11:20:15,068 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:20:15,068 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:20:15,069 INFO L146 ILogger]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:20:15,069 INFO L146 ILogger]: Start difference. First operand 59 states and 61 transitions. Second operand 7 states. [2019-05-23 11:20:15,458 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:15,458 INFO L146 ILogger]: Finished difference Result 164 states and 169 transitions. [2019-05-23 11:20:15,459 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:20:15,459 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 54 [2019-05-23 11:20:15,460 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:15,462 INFO L146 ILogger]: With dead ends: 164 [2019-05-23 11:20:15,462 INFO L146 ILogger]: Without dead ends: 129 [2019-05-23 11:20:15,463 INFO L146 ILogger]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:20:15,463 INFO L146 ILogger]: Start minimizeSevpa. Operand 129 states. [2019-05-23 11:20:15,469 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 129 to 70. [2019-05-23 11:20:15,470 INFO L146 ILogger]: Start removeUnreachable. Operand 70 states. [2019-05-23 11:20:15,470 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 70 states to 70 states and 72 transitions. [2019-05-23 11:20:15,471 INFO L146 ILogger]: Start accepts. Automaton has 70 states and 72 transitions. Word has length 54 [2019-05-23 11:20:15,471 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:15,471 INFO L146 ILogger]: Abstraction has 70 states and 72 transitions. [2019-05-23 11:20:15,471 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:20:15,471 INFO L146 ILogger]: Start isEmpty. Operand 70 states and 72 transitions. [2019-05-23 11:20:15,472 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 66 [2019-05-23 11:20:15,473 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:15,473 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:20:15,473 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:15,473 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:15,474 INFO L146 ILogger]: Analyzing trace with hash -1188376437, now seen corresponding path program 4 times [2019-05-23 11:20:15,474 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:15,474 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:15,475 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:15,475 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:15,475 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:15,499 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:15,592 INFO L146 ILogger]: Checked inductivity of 74 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-05-23 11:20:15,592 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:15,592 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:15,603 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:20:15,648 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:20:15,649 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:15,650 INFO L146 ILogger]: Trace formula consists of 114 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:20:15,653 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:15,679 INFO L146 ILogger]: Checked inductivity of 74 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-05-23 11:20:15,698 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:15,699 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-05-23 11:20:15,699 INFO L146 ILogger]: Interpolant automaton has 8 states [2019-05-23 11:20:15,699 INFO L146 ILogger]: Constructing interpolant automaton starting with 8 interpolants. [2019-05-23 11:20:15,700 INFO L146 ILogger]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:20:15,700 INFO L146 ILogger]: Start difference. First operand 70 states and 72 transitions. Second operand 8 states. [2019-05-23 11:20:16,090 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:16,091 INFO L146 ILogger]: Finished difference Result 194 states and 199 transitions. [2019-05-23 11:20:16,091 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:20:16,091 INFO L146 ILogger]: Start accepts. Automaton has 8 states. Word has length 65 [2019-05-23 11:20:16,092 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:16,094 INFO L146 ILogger]: With dead ends: 194 [2019-05-23 11:20:16,094 INFO L146 ILogger]: Without dead ends: 153 [2019-05-23 11:20:16,095 INFO L146 ILogger]: 0 DeclaredPredicates, 71 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:20:16,095 INFO L146 ILogger]: Start minimizeSevpa. Operand 153 states. [2019-05-23 11:20:16,108 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 153 to 81. [2019-05-23 11:20:16,108 INFO L146 ILogger]: Start removeUnreachable. Operand 81 states. [2019-05-23 11:20:16,111 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2019-05-23 11:20:16,112 INFO L146 ILogger]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 65 [2019-05-23 11:20:16,112 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:16,112 INFO L146 ILogger]: Abstraction has 81 states and 83 transitions. [2019-05-23 11:20:16,112 INFO L146 ILogger]: Interpolant automaton has 8 states. [2019-05-23 11:20:16,113 INFO L146 ILogger]: Start isEmpty. Operand 81 states and 83 transitions. [2019-05-23 11:20:16,114 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 77 [2019-05-23 11:20:16,116 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:16,116 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:20:16,116 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:16,116 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:16,117 INFO L146 ILogger]: Analyzing trace with hash 2093788831, now seen corresponding path program 5 times [2019-05-23 11:20:16,117 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:16,117 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:16,118 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:16,118 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:16,118 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:16,170 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:16,325 INFO L146 ILogger]: Checked inductivity of 120 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-05-23 11:20:16,326 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:16,326 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:16,334 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:20:16,601 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-05-23 11:20:16,601 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:16,603 INFO L146 ILogger]: Trace formula consists of 130 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:20:16,606 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:16,735 INFO L146 ILogger]: Checked inductivity of 120 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-05-23 11:20:16,766 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:16,766 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2019-05-23 11:20:16,767 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:20:16,767 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:20:16,768 INFO L146 ILogger]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:20:16,768 INFO L146 ILogger]: Start difference. First operand 81 states and 83 transitions. Second operand 9 states. [2019-05-23 11:20:17,137 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:17,137 INFO L146 ILogger]: Finished difference Result 224 states and 229 transitions. [2019-05-23 11:20:17,137 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:20:17,138 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 76 [2019-05-23 11:20:17,138 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:17,140 INFO L146 ILogger]: With dead ends: 224 [2019-05-23 11:20:17,140 INFO L146 ILogger]: Without dead ends: 177 [2019-05-23 11:20:17,141 INFO L146 ILogger]: 0 DeclaredPredicates, 83 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:20:17,142 INFO L146 ILogger]: Start minimizeSevpa. Operand 177 states. [2019-05-23 11:20:17,147 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 177 to 92. [2019-05-23 11:20:17,148 INFO L146 ILogger]: Start removeUnreachable. Operand 92 states. [2019-05-23 11:20:17,149 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 92 states to 92 states and 94 transitions. [2019-05-23 11:20:17,149 INFO L146 ILogger]: Start accepts. Automaton has 92 states and 94 transitions. Word has length 76 [2019-05-23 11:20:17,149 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:17,149 INFO L146 ILogger]: Abstraction has 92 states and 94 transitions. [2019-05-23 11:20:17,150 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:20:17,150 INFO L146 ILogger]: Start isEmpty. Operand 92 states and 94 transitions. [2019-05-23 11:20:17,151 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 88 [2019-05-23 11:20:17,151 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:17,152 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:17,152 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:17,152 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:17,152 INFO L146 ILogger]: Analyzing trace with hash 245342309, now seen corresponding path program 6 times [2019-05-23 11:20:17,153 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:17,153 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:17,154 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:17,154 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:17,154 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:17,189 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:17,349 INFO L146 ILogger]: Checked inductivity of 177 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:20:17,349 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:17,349 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:17,357 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:20:17,450 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-05-23 11:20:17,450 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:17,451 INFO L146 ILogger]: Trace formula consists of 146 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:20:17,454 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:17,480 INFO L146 ILogger]: Checked inductivity of 177 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:20:17,499 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:17,499 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2019-05-23 11:20:17,499 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:20:17,500 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:20:17,500 INFO L146 ILogger]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:20:17,500 INFO L146 ILogger]: Start difference. First operand 92 states and 94 transitions. Second operand 10 states. [2019-05-23 11:20:17,749 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:17,750 INFO L146 ILogger]: Finished difference Result 254 states and 259 transitions. [2019-05-23 11:20:17,750 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-05-23 11:20:17,750 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 87 [2019-05-23 11:20:17,750 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:17,752 INFO L146 ILogger]: With dead ends: 254 [2019-05-23 11:20:17,752 INFO L146 ILogger]: Without dead ends: 201 [2019-05-23 11:20:17,752 INFO L146 ILogger]: 0 DeclaredPredicates, 95 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:20:17,755 INFO L146 ILogger]: Start minimizeSevpa. Operand 201 states. [2019-05-23 11:20:17,764 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 201 to 103. [2019-05-23 11:20:17,764 INFO L146 ILogger]: Start removeUnreachable. Operand 103 states. [2019-05-23 11:20:17,765 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 103 states to 103 states and 105 transitions. [2019-05-23 11:20:17,765 INFO L146 ILogger]: Start accepts. Automaton has 103 states and 105 transitions. Word has length 87 [2019-05-23 11:20:17,770 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:17,770 INFO L146 ILogger]: Abstraction has 103 states and 105 transitions. [2019-05-23 11:20:17,770 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:20:17,770 INFO L146 ILogger]: Start isEmpty. Operand 103 states and 105 transitions. [2019-05-23 11:20:17,772 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 99 [2019-05-23 11:20:17,772 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:17,772 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:17,773 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:17,773 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:17,773 INFO L146 ILogger]: Analyzing trace with hash 433221561, now seen corresponding path program 7 times [2019-05-23 11:20:17,773 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:17,776 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:17,777 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:17,777 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:17,777 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:17,820 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:17,999 INFO L146 ILogger]: Checked inductivity of 245 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-05-23 11:20:17,999 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:17,999 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:18,008 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:18,035 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:18,036 INFO L146 ILogger]: Trace formula consists of 162 conjuncts, 9 conjunts are in the unsatisfiable core [2019-05-23 11:20:18,039 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:18,067 INFO L146 ILogger]: Checked inductivity of 245 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-05-23 11:20:18,089 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:18,089 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2019-05-23 11:20:18,090 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:20:18,090 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:20:18,091 INFO L146 ILogger]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:20:18,091 INFO L146 ILogger]: Start difference. First operand 103 states and 105 transitions. Second operand 11 states. [2019-05-23 11:20:18,264 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:18,265 INFO L146 ILogger]: Finished difference Result 284 states and 289 transitions. [2019-05-23 11:20:18,265 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-05-23 11:20:18,266 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 98 [2019-05-23 11:20:18,266 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:18,267 INFO L146 ILogger]: With dead ends: 284 [2019-05-23 11:20:18,267 INFO L146 ILogger]: Without dead ends: 225 [2019-05-23 11:20:18,268 INFO L146 ILogger]: 0 DeclaredPredicates, 107 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:20:18,269 INFO L146 ILogger]: Start minimizeSevpa. Operand 225 states. [2019-05-23 11:20:18,273 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 225 to 114. [2019-05-23 11:20:18,273 INFO L146 ILogger]: Start removeUnreachable. Operand 114 states. [2019-05-23 11:20:18,274 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 114 states to 114 states and 116 transitions. [2019-05-23 11:20:18,275 INFO L146 ILogger]: Start accepts. Automaton has 114 states and 116 transitions. Word has length 98 [2019-05-23 11:20:18,275 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:18,275 INFO L146 ILogger]: Abstraction has 114 states and 116 transitions. [2019-05-23 11:20:18,275 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:20:18,275 INFO L146 ILogger]: Start isEmpty. Operand 114 states and 116 transitions. [2019-05-23 11:20:18,277 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 110 [2019-05-23 11:20:18,277 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:18,277 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:18,277 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:18,277 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:18,278 INFO L146 ILogger]: Analyzing trace with hash 510095679, now seen corresponding path program 8 times [2019-05-23 11:20:18,278 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:18,278 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:18,279 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:18,279 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:18,279 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:18,300 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:18,532 INFO L146 ILogger]: Checked inductivity of 324 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-05-23 11:20:18,533 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:18,533 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:18,545 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:18,576 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:18,576 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:18,577 INFO L146 ILogger]: Trace formula consists of 178 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:20:18,579 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:18,624 INFO L146 ILogger]: Checked inductivity of 324 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-05-23 11:20:18,645 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:18,645 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-05-23 11:20:18,646 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:20:18,646 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:20:18,646 INFO L146 ILogger]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:20:18,646 INFO L146 ILogger]: Start difference. First operand 114 states and 116 transitions. Second operand 12 states. [2019-05-23 11:20:18,810 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:18,810 INFO L146 ILogger]: Finished difference Result 314 states and 319 transitions. [2019-05-23 11:20:18,810 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 11:20:18,811 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 109 [2019-05-23 11:20:18,811 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:18,813 INFO L146 ILogger]: With dead ends: 314 [2019-05-23 11:20:18,813 INFO L146 ILogger]: Without dead ends: 249 [2019-05-23 11:20:18,814 INFO L146 ILogger]: 0 DeclaredPredicates, 119 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:20:18,815 INFO L146 ILogger]: Start minimizeSevpa. Operand 249 states. [2019-05-23 11:20:18,819 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 249 to 125. [2019-05-23 11:20:18,820 INFO L146 ILogger]: Start removeUnreachable. Operand 125 states. [2019-05-23 11:20:18,821 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 125 states to 125 states and 127 transitions. [2019-05-23 11:20:18,821 INFO L146 ILogger]: Start accepts. Automaton has 125 states and 127 transitions. Word has length 109 [2019-05-23 11:20:18,821 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:18,821 INFO L146 ILogger]: Abstraction has 125 states and 127 transitions. [2019-05-23 11:20:18,821 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:20:18,821 INFO L146 ILogger]: Start isEmpty. Operand 125 states and 127 transitions. [2019-05-23 11:20:18,823 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 121 [2019-05-23 11:20:18,823 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:18,823 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:18,824 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:18,824 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:18,824 INFO L146 ILogger]: Analyzing trace with hash -1239129645, now seen corresponding path program 9 times [2019-05-23 11:20:18,824 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:18,824 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:18,825 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:18,825 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:18,825 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:18,845 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:19,000 INFO L146 ILogger]: Checked inductivity of 414 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2019-05-23 11:20:19,001 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:19,001 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:19,009 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:19,488 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-05-23 11:20:19,488 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:19,491 INFO L146 ILogger]: Trace formula consists of 194 conjuncts, 11 conjunts are in the unsatisfiable core [2019-05-23 11:20:19,493 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:19,561 INFO L146 ILogger]: Checked inductivity of 414 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2019-05-23 11:20:19,581 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:19,581 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2019-05-23 11:20:19,581 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:20:19,581 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:20:19,582 INFO L146 ILogger]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:20:19,582 INFO L146 ILogger]: Start difference. First operand 125 states and 127 transitions. Second operand 13 states. [2019-05-23 11:20:19,755 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:19,755 INFO L146 ILogger]: Finished difference Result 344 states and 349 transitions. [2019-05-23 11:20:19,756 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:20:19,756 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 120 [2019-05-23 11:20:19,756 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:19,759 INFO L146 ILogger]: With dead ends: 344 [2019-05-23 11:20:19,759 INFO L146 ILogger]: Without dead ends: 273 [2019-05-23 11:20:19,759 INFO L146 ILogger]: 0 DeclaredPredicates, 131 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:20:19,760 INFO L146 ILogger]: Start minimizeSevpa. Operand 273 states. [2019-05-23 11:20:19,764 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 273 to 136. [2019-05-23 11:20:19,764 INFO L146 ILogger]: Start removeUnreachable. Operand 136 states. [2019-05-23 11:20:19,765 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 136 states to 136 states and 138 transitions. [2019-05-23 11:20:19,765 INFO L146 ILogger]: Start accepts. Automaton has 136 states and 138 transitions. Word has length 120 [2019-05-23 11:20:19,766 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:19,766 INFO L146 ILogger]: Abstraction has 136 states and 138 transitions. [2019-05-23 11:20:19,766 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:20:19,766 INFO L146 ILogger]: Start isEmpty. Operand 136 states and 138 transitions. [2019-05-23 11:20:19,767 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 132 [2019-05-23 11:20:19,768 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:19,768 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:19,768 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:19,768 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:19,768 INFO L146 ILogger]: Analyzing trace with hash -406928615, now seen corresponding path program 10 times [2019-05-23 11:20:19,769 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:19,769 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:19,769 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:19,770 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:19,770 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:19,792 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:20,102 INFO L146 ILogger]: Checked inductivity of 515 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2019-05-23 11:20:20,102 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:20,103 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) [2019-05-23 11:20:20,118 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:20,179 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:20:20,179 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:20,180 INFO L146 ILogger]: Trace formula consists of 210 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:20:20,182 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:20,204 INFO L146 ILogger]: Checked inductivity of 515 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2019-05-23 11:20:20,223 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:20,223 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2019-05-23 11:20:20,223 INFO L146 ILogger]: Interpolant automaton has 14 states [2019-05-23 11:20:20,224 INFO L146 ILogger]: Constructing interpolant automaton starting with 14 interpolants. [2019-05-23 11:20:20,224 INFO L146 ILogger]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:20:20,224 INFO L146 ILogger]: Start difference. First operand 136 states and 138 transitions. Second operand 14 states. [2019-05-23 11:20:20,529 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:20,530 INFO L146 ILogger]: Finished difference Result 374 states and 379 transitions. [2019-05-23 11:20:20,530 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:20:20,530 INFO L146 ILogger]: Start accepts. Automaton has 14 states. Word has length 131 [2019-05-23 11:20:20,531 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:20,532 INFO L146 ILogger]: With dead ends: 374 [2019-05-23 11:20:20,533 INFO L146 ILogger]: Without dead ends: 297 [2019-05-23 11:20:20,533 INFO L146 ILogger]: 0 DeclaredPredicates, 143 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:20:20,534 INFO L146 ILogger]: Start minimizeSevpa. Operand 297 states. [2019-05-23 11:20:20,537 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 297 to 147. [2019-05-23 11:20:20,538 INFO L146 ILogger]: Start removeUnreachable. Operand 147 states. [2019-05-23 11:20:20,538 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 147 states to 147 states and 149 transitions. [2019-05-23 11:20:20,539 INFO L146 ILogger]: Start accepts. Automaton has 147 states and 149 transitions. Word has length 131 [2019-05-23 11:20:20,539 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:20,539 INFO L146 ILogger]: Abstraction has 147 states and 149 transitions. [2019-05-23 11:20:20,539 INFO L146 ILogger]: Interpolant automaton has 14 states. [2019-05-23 11:20:20,539 INFO L146 ILogger]: Start isEmpty. Operand 147 states and 149 transitions. [2019-05-23 11:20:20,541 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 143 [2019-05-23 11:20:20,541 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:20,541 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:20,541 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:20,541 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:20,542 INFO L146 ILogger]: Analyzing trace with hash 92996845, now seen corresponding path program 11 times [2019-05-23 11:20:20,542 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:20,542 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:20,543 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:20,543 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:20,543 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:20,563 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:20,806 INFO L146 ILogger]: Checked inductivity of 627 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2019-05-23 11:20:20,806 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:20,806 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:20,814 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:20:21,833 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-05-23 11:20:21,834 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:21,837 INFO L146 ILogger]: Trace formula consists of 226 conjuncts, 13 conjunts are in the unsatisfiable core [2019-05-23 11:20:21,838 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:21,886 INFO L146 ILogger]: Checked inductivity of 627 backedges. 0 proven. 341 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2019-05-23 11:20:21,906 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:21,906 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2019-05-23 11:20:21,906 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:20:21,907 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:20:21,907 INFO L146 ILogger]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:20:21,907 INFO L146 ILogger]: Start difference. First operand 147 states and 149 transitions. Second operand 15 states. [2019-05-23 11:20:22,190 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:22,190 INFO L146 ILogger]: Finished difference Result 404 states and 409 transitions. [2019-05-23 11:20:22,191 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-05-23 11:20:22,191 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 142 [2019-05-23 11:20:22,191 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:22,193 INFO L146 ILogger]: With dead ends: 404 [2019-05-23 11:20:22,193 INFO L146 ILogger]: Without dead ends: 321 [2019-05-23 11:20:22,194 INFO L146 ILogger]: 0 DeclaredPredicates, 155 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:20:22,195 INFO L146 ILogger]: Start minimizeSevpa. Operand 321 states. [2019-05-23 11:20:22,198 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 321 to 158. [2019-05-23 11:20:22,199 INFO L146 ILogger]: Start removeUnreachable. Operand 158 states. [2019-05-23 11:20:22,199 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 158 states to 158 states and 160 transitions. [2019-05-23 11:20:22,199 INFO L146 ILogger]: Start accepts. Automaton has 158 states and 160 transitions. Word has length 142 [2019-05-23 11:20:22,200 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:22,200 INFO L146 ILogger]: Abstraction has 158 states and 160 transitions. [2019-05-23 11:20:22,200 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:20:22,200 INFO L146 ILogger]: Start isEmpty. Operand 158 states and 160 transitions. [2019-05-23 11:20:22,201 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 154 [2019-05-23 11:20:22,202 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:22,202 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:22,202 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:22,202 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:22,202 INFO L146 ILogger]: Analyzing trace with hash -425585165, now seen corresponding path program 12 times [2019-05-23 11:20:22,203 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:22,203 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:22,203 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:22,204 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:22,204 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:22,224 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:23,055 INFO L146 ILogger]: Checked inductivity of 750 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2019-05-23 11:20:23,055 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:23,055 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:23,064 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:20:25,415 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-05-23 11:20:25,416 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:25,419 INFO L146 ILogger]: Trace formula consists of 242 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:20:25,421 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:25,571 INFO L146 ILogger]: Checked inductivity of 750 backedges. 0 proven. 408 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2019-05-23 11:20:25,601 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:25,602 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2019-05-23 11:20:25,602 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:20:25,603 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:20:25,603 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:20:25,603 INFO L146 ILogger]: Start difference. First operand 158 states and 160 transitions. Second operand 16 states. [2019-05-23 11:20:25,952 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:25,953 INFO L146 ILogger]: Finished difference Result 434 states and 439 transitions. [2019-05-23 11:20:25,953 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-05-23 11:20:25,953 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 153 [2019-05-23 11:20:25,954 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:25,956 INFO L146 ILogger]: With dead ends: 434 [2019-05-23 11:20:25,956 INFO L146 ILogger]: Without dead ends: 345 [2019-05-23 11:20:25,956 INFO L146 ILogger]: 0 DeclaredPredicates, 167 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:20:25,957 INFO L146 ILogger]: Start minimizeSevpa. Operand 345 states. [2019-05-23 11:20:25,960 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 345 to 169. [2019-05-23 11:20:25,961 INFO L146 ILogger]: Start removeUnreachable. Operand 169 states. [2019-05-23 11:20:25,961 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 169 states to 169 states and 171 transitions. [2019-05-23 11:20:25,961 INFO L146 ILogger]: Start accepts. Automaton has 169 states and 171 transitions. Word has length 153 [2019-05-23 11:20:25,962 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:25,962 INFO L146 ILogger]: Abstraction has 169 states and 171 transitions. [2019-05-23 11:20:25,962 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:20:25,962 INFO L146 ILogger]: Start isEmpty. Operand 169 states and 171 transitions. [2019-05-23 11:20:25,963 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 165 [2019-05-23 11:20:25,964 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:25,964 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:25,964 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:25,964 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:25,964 INFO L146 ILogger]: Analyzing trace with hash -1349592825, now seen corresponding path program 13 times [2019-05-23 11:20:25,965 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:25,965 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:25,965 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:25,966 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:25,966 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:25,985 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:26,783 INFO L146 ILogger]: Checked inductivity of 884 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2019-05-23 11:20:26,783 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:26,783 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:26,792 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:26,842 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:26,843 INFO L146 ILogger]: Trace formula consists of 258 conjuncts, 15 conjunts are in the unsatisfiable core [2019-05-23 11:20:26,845 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:26,965 INFO L146 ILogger]: Checked inductivity of 884 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2019-05-23 11:20:26,994 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:26,995 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2019-05-23 11:20:26,995 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:20:26,995 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:20:26,996 INFO L146 ILogger]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:20:26,996 INFO L146 ILogger]: Start difference. First operand 169 states and 171 transitions. Second operand 17 states. [2019-05-23 11:20:27,924 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:27,924 INFO L146 ILogger]: Finished difference Result 464 states and 469 transitions. [2019-05-23 11:20:27,925 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-05-23 11:20:27,925 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 164 [2019-05-23 11:20:27,926 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:27,928 INFO L146 ILogger]: With dead ends: 464 [2019-05-23 11:20:27,928 INFO L146 ILogger]: Without dead ends: 369 [2019-05-23 11:20:27,929 INFO L146 ILogger]: 0 DeclaredPredicates, 179 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:20:27,930 INFO L146 ILogger]: Start minimizeSevpa. Operand 369 states. [2019-05-23 11:20:27,936 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 369 to 180. [2019-05-23 11:20:27,937 INFO L146 ILogger]: Start removeUnreachable. Operand 180 states. [2019-05-23 11:20:27,937 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 180 states to 180 states and 182 transitions. [2019-05-23 11:20:27,938 INFO L146 ILogger]: Start accepts. Automaton has 180 states and 182 transitions. Word has length 164 [2019-05-23 11:20:27,938 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:27,938 INFO L146 ILogger]: Abstraction has 180 states and 182 transitions. [2019-05-23 11:20:27,938 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:20:27,938 INFO L146 ILogger]: Start isEmpty. Operand 180 states and 182 transitions. [2019-05-23 11:20:27,940 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 176 [2019-05-23 11:20:27,940 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:27,940 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:27,941 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:27,941 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:27,941 INFO L146 ILogger]: Analyzing trace with hash 1406003661, now seen corresponding path program 14 times [2019-05-23 11:20:27,941 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:27,941 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:27,942 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:27,942 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:27,943 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:27,966 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:28,360 INFO L146 ILogger]: Checked inductivity of 1029 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2019-05-23 11:20:28,360 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:28,360 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:28,368 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:28,413 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:28,414 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:28,415 INFO L146 ILogger]: Trace formula consists of 274 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:20:28,417 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:28,452 INFO L146 ILogger]: Checked inductivity of 1029 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2019-05-23 11:20:28,479 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:28,480 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2019-05-23 11:20:28,480 INFO L146 ILogger]: Interpolant automaton has 18 states [2019-05-23 11:20:28,481 INFO L146 ILogger]: Constructing interpolant automaton starting with 18 interpolants. [2019-05-23 11:20:28,481 INFO L146 ILogger]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-05-23 11:20:28,481 INFO L146 ILogger]: Start difference. First operand 180 states and 182 transitions. Second operand 18 states. [2019-05-23 11:20:28,788 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:28,789 INFO L146 ILogger]: Finished difference Result 494 states and 499 transitions. [2019-05-23 11:20:28,789 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-05-23 11:20:28,789 INFO L146 ILogger]: Start accepts. Automaton has 18 states. Word has length 175 [2019-05-23 11:20:28,789 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:28,792 INFO L146 ILogger]: With dead ends: 494 [2019-05-23 11:20:28,792 INFO L146 ILogger]: Without dead ends: 393 [2019-05-23 11:20:28,793 INFO L146 ILogger]: 0 DeclaredPredicates, 191 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-05-23 11:20:28,794 INFO L146 ILogger]: Start minimizeSevpa. Operand 393 states. [2019-05-23 11:20:28,798 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 393 to 191. [2019-05-23 11:20:28,798 INFO L146 ILogger]: Start removeUnreachable. Operand 191 states. [2019-05-23 11:20:28,799 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 191 states to 191 states and 193 transitions. [2019-05-23 11:20:28,799 INFO L146 ILogger]: Start accepts. Automaton has 191 states and 193 transitions. Word has length 175 [2019-05-23 11:20:28,799 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:28,799 INFO L146 ILogger]: Abstraction has 191 states and 193 transitions. [2019-05-23 11:20:28,799 INFO L146 ILogger]: Interpolant automaton has 18 states. [2019-05-23 11:20:28,800 INFO L146 ILogger]: Start isEmpty. Operand 191 states and 193 transitions. [2019-05-23 11:20:28,801 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 187 [2019-05-23 11:20:28,801 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:28,802 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:28,802 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:28,802 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:28,802 INFO L146 ILogger]: Analyzing trace with hash 1333288481, now seen corresponding path program 15 times [2019-05-23 11:20:28,802 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:28,803 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:28,803 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:28,803 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:28,804 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:28,823 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:29,036 INFO L146 ILogger]: Checked inductivity of 1185 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2019-05-23 11:20:29,036 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:29,036 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:29,045 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:33,445 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2019-05-23 11:20:33,445 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:33,451 INFO L146 ILogger]: Trace formula consists of 290 conjuncts, 17 conjunts are in the unsatisfiable core [2019-05-23 11:20:33,454 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:33,495 INFO L146 ILogger]: Checked inductivity of 1185 backedges. 0 proven. 645 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2019-05-23 11:20:33,516 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:33,516 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2019-05-23 11:20:33,516 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:20:33,517 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:20:33,517 INFO L146 ILogger]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:20:33,517 INFO L146 ILogger]: Start difference. First operand 191 states and 193 transitions. Second operand 19 states. [2019-05-23 11:20:33,932 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:33,932 INFO L146 ILogger]: Finished difference Result 524 states and 529 transitions. [2019-05-23 11:20:33,933 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:20:33,933 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 186 [2019-05-23 11:20:33,933 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:33,935 INFO L146 ILogger]: With dead ends: 524 [2019-05-23 11:20:33,935 INFO L146 ILogger]: Without dead ends: 417 [2019-05-23 11:20:33,936 INFO L146 ILogger]: 0 DeclaredPredicates, 203 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:20:33,936 INFO L146 ILogger]: Start minimizeSevpa. Operand 417 states. [2019-05-23 11:20:33,941 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 417 to 202. [2019-05-23 11:20:33,942 INFO L146 ILogger]: Start removeUnreachable. Operand 202 states. [2019-05-23 11:20:33,943 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 202 states to 202 states and 204 transitions. [2019-05-23 11:20:33,943 INFO L146 ILogger]: Start accepts. Automaton has 202 states and 204 transitions. Word has length 186 [2019-05-23 11:20:33,944 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:33,944 INFO L146 ILogger]: Abstraction has 202 states and 204 transitions. [2019-05-23 11:20:33,944 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:20:33,944 INFO L146 ILogger]: Start isEmpty. Operand 202 states and 204 transitions. [2019-05-23 11:20:33,945 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 198 [2019-05-23 11:20:33,945 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:33,945 INFO L146 ILogger]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:33,945 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:33,946 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:33,946 INFO L146 ILogger]: Analyzing trace with hash 1690222247, now seen corresponding path program 16 times [2019-05-23 11:20:33,946 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:33,946 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:33,947 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:33,947 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:33,947 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:33,971 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:34,388 INFO L146 ILogger]: Checked inductivity of 1352 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 736 trivial. 0 not checked. [2019-05-23 11:20:34,388 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:34,389 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:34,402 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:20:34,562 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:20:34,562 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:34,565 INFO L146 ILogger]: Trace formula consists of 306 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:20:34,567 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:34,616 INFO L146 ILogger]: Checked inductivity of 1352 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 736 trivial. 0 not checked. [2019-05-23 11:20:34,636 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:34,636 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2019-05-23 11:20:34,637 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:20:34,637 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:20:34,637 INFO L146 ILogger]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:20:34,638 INFO L146 ILogger]: Start difference. First operand 202 states and 204 transitions. Second operand 20 states. [2019-05-23 11:20:34,918 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:34,918 INFO L146 ILogger]: Finished difference Result 554 states and 559 transitions. [2019-05-23 11:20:34,918 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-05-23 11:20:34,919 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 197 [2019-05-23 11:20:34,919 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:34,921 INFO L146 ILogger]: With dead ends: 554 [2019-05-23 11:20:34,922 INFO L146 ILogger]: Without dead ends: 441 [2019-05-23 11:20:34,922 INFO L146 ILogger]: 0 DeclaredPredicates, 215 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:20:34,924 INFO L146 ILogger]: Start minimizeSevpa. Operand 441 states. [2019-05-23 11:20:34,928 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 441 to 213. [2019-05-23 11:20:34,928 INFO L146 ILogger]: Start removeUnreachable. Operand 213 states. [2019-05-23 11:20:34,929 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 213 states to 213 states and 215 transitions. [2019-05-23 11:20:34,929 INFO L146 ILogger]: Start accepts. Automaton has 213 states and 215 transitions. Word has length 197 [2019-05-23 11:20:34,930 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:34,930 INFO L146 ILogger]: Abstraction has 213 states and 215 transitions. [2019-05-23 11:20:34,930 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:20:34,930 INFO L146 ILogger]: Start isEmpty. Operand 213 states and 215 transitions. [2019-05-23 11:20:34,931 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 209 [2019-05-23 11:20:34,931 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:34,931 INFO L146 ILogger]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:34,932 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:34,932 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:34,932 INFO L146 ILogger]: Analyzing trace with hash 1951405115, now seen corresponding path program 17 times [2019-05-23 11:20:34,932 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:34,932 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:34,933 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:34,933 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:34,933 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:34,955 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:35,229 INFO L146 ILogger]: Checked inductivity of 1530 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2019-05-23 11:20:35,229 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:35,229 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 11:20:35,238 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:21:15,444 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2019-05-23 11:21:15,444 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:15,466 INFO L146 ILogger]: Trace formula consists of 322 conjuncts, 19 conjunts are in the unsatisfiable core [2019-05-23 11:21:15,468 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:15,540 INFO L146 ILogger]: Checked inductivity of 1530 backedges. 0 proven. 833 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2019-05-23 11:21:15,570 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:15,571 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2019-05-23 11:21:15,571 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:21:15,571 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:21:15,572 INFO L146 ILogger]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:21:15,572 INFO L146 ILogger]: Start difference. First operand 213 states and 215 transitions. Second operand 21 states. [2019-05-23 11:21:15,836 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:15,837 INFO L146 ILogger]: Finished difference Result 584 states and 589 transitions. [2019-05-23 11:21:15,837 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-05-23 11:21:15,837 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 208 [2019-05-23 11:21:15,838 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:15,841 INFO L146 ILogger]: With dead ends: 584 [2019-05-23 11:21:15,841 INFO L146 ILogger]: Without dead ends: 465 [2019-05-23 11:21:15,841 INFO L146 ILogger]: 0 DeclaredPredicates, 227 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:21:15,842 INFO L146 ILogger]: Start minimizeSevpa. Operand 465 states. [2019-05-23 11:21:15,846 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 465 to 224. [2019-05-23 11:21:15,847 INFO L146 ILogger]: Start removeUnreachable. Operand 224 states. [2019-05-23 11:21:15,847 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 224 states to 224 states and 226 transitions. [2019-05-23 11:21:15,848 INFO L146 ILogger]: Start accepts. Automaton has 224 states and 226 transitions. Word has length 208 [2019-05-23 11:21:15,848 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:15,848 INFO L146 ILogger]: Abstraction has 224 states and 226 transitions. [2019-05-23 11:21:15,848 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:21:15,848 INFO L146 ILogger]: Start isEmpty. Operand 224 states and 226 transitions. [2019-05-23 11:21:15,849 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 220 [2019-05-23 11:21:15,849 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:15,850 INFO L146 ILogger]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:15,850 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:15,850 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:15,850 INFO L146 ILogger]: Analyzing trace with hash -1951329151, now seen corresponding path program 18 times [2019-05-23 11:21:15,851 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:15,851 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:15,851 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:15,852 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:15,852 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:15,874 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:16,147 INFO L146 ILogger]: Checked inductivity of 1719 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 936 trivial. 0 not checked. [2019-05-23 11:21:16,147 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:16,147 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 11:21:16,156 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE