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_maxInArray_true-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:19:00,889 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:19:00,891 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:19:00,910 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:19:00,911 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:19:00,912 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:19:00,914 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:19:00,918 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:19:00,926 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:19:00,927 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:19:00,931 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:19:00,932 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:19:00,933 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:19:00,934 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:19:00,935 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:19:00,938 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:19:00,939 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:19:00,943 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:19:00,946 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:19:00,950 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:19:00,953 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:19:00,954 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:19:00,956 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:19:00,956 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:19:00,957 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:19:00,957 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:19:00,958 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:19:00,959 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:19:00,959 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:19:00,960 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:19:00,960 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:19:00,963 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:19:00,964 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:19:00,964 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:19:00,965 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:19:00,965 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:19:00,965 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:19:00,966 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:19:00,967 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:19:00,967 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:19:00,982 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:19:00,982 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:19:00,983 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:19:00,984 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:19:00,984 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:19:00,984 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:19:00,984 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:19:00,984 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:19:00,985 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:19:00,985 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:19:00,985 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:19:00,985 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:19:00,985 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:19:00,986 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:19:00,986 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:19:00,986 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:19:00,986 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:19:00,987 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:19:00,987 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:19:00,987 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:19:00,987 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:19:00,987 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:19:00,988 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:19:00,988 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:19:00,988 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:19:00,988 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:19:00,988 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:19:00,989 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:19:00,989 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 11:19:01,020 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:19:01,032 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:19:01,035 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:19:01,036 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:19:01,037 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:19:01,038 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_maxInArray_true-unreach-call_ground.i [2019-05-23 11:19:01,093 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b36e2ac70/efb226ea7f684beda55031a423c42129/FLAG13e33fdb0 [2019-05-23 11:19:01,491 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:19:01,492 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_maxInArray_true-unreach-call_ground.i [2019-05-23 11:19:01,498 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b36e2ac70/efb226ea7f684beda55031a423c42129/FLAG13e33fdb0 [2019-05-23 11:19:01,878 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b36e2ac70/efb226ea7f684beda55031a423c42129 [2019-05-23 11:19:01,890 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:19:01,892 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:19:01,893 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:19:01,893 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:19:01,897 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:19:01,898 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:19:01" (1/1) ... [2019-05-23 11:19:01,901 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a405164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:01, skipping insertion in model container [2019-05-23 11:19:01,902 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:19:01" (1/1) ... [2019-05-23 11:19:01,910 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:19:01,933 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:19:02,170 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:19:02,175 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:19:02,202 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:19:02,230 INFO L146 ILogger]: Completed translation [2019-05-23 11:19:02,231 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:02 WrapperNode [2019-05-23 11:19:02,231 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:19:02,232 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:19:02,233 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:19:02,233 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:19:02,244 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:02" (1/1) ... [2019-05-23 11:19:02,257 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:02" (1/1) ... [2019-05-23 11:19:02,285 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:19:02,286 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:19:02,286 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:19:02,286 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:19:02,297 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:02" (1/1) ... [2019-05-23 11:19:02,297 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:02" (1/1) ... [2019-05-23 11:19:02,299 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:02" (1/1) ... [2019-05-23 11:19:02,299 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:02" (1/1) ... [2019-05-23 11:19:02,307 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:02" (1/1) ... [2019-05-23 11:19:02,314 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:02" (1/1) ... [2019-05-23 11:19:02,319 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:02" (1/1) ... [2019-05-23 11:19:02,321 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:19:02,326 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:19:02,327 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:19:02,327 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:19:02,328 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:02" (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 11:19:02,537 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:19:02,538 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:19:02,538 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:19:02,538 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:19:02,538 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:19:02,926 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:19:02,926 INFO L146 ILogger]: Removed 8 assume(true) statements. [2019-05-23 11:19:02,928 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:19:02 BoogieIcfgContainer [2019-05-23 11:19:02,928 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:19:02,929 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:19:02,929 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:19:02,932 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:19:02,932 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:19:01" (1/3) ... [2019-05-23 11:19:02,933 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@326bd47b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:19:02, skipping insertion in model container [2019-05-23 11:19:02,933 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:02" (2/3) ... [2019-05-23 11:19:02,934 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@326bd47b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:19:02, skipping insertion in model container [2019-05-23 11:19:02,934 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:19:02" (3/3) ... [2019-05-23 11:19:02,936 INFO L146 ILogger]: Analyzing ICFG standard_maxInArray_true-unreach-call_ground.i [2019-05-23 11:19:02,945 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:19:02,953 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:19:02,969 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:19:02,999 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:19:03,000 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:19:03,000 INFO L146 ILogger]: Hoare is true [2019-05-23 11:19:03,000 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:19:03,001 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:19:03,001 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:19:03,001 INFO L146 ILogger]: Difference is false [2019-05-23 11:19:03,001 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:19:03,001 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:19:03,016 INFO L146 ILogger]: Start isEmpty. Operand 36 states. [2019-05-23 11:19:03,023 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 18 [2019-05-23 11:19:03,023 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:03,024 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:03,027 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:03,032 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:03,033 INFO L146 ILogger]: Analyzing trace with hash 1653394114, now seen corresponding path program 1 times [2019-05-23 11:19:03,035 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:03,035 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:03,085 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:03,085 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:03,085 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:03,135 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:03,214 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 11:19:03,216 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:19:03,217 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:19:03,221 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:19:03,234 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:19:03,235 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:19:03,238 INFO L146 ILogger]: Start difference. First operand 36 states. Second operand 3 states. [2019-05-23 11:19:03,356 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:03,356 INFO L146 ILogger]: Finished difference Result 65 states and 75 transitions. [2019-05-23 11:19:03,357 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:19:03,359 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 17 [2019-05-23 11:19:03,359 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:03,368 INFO L146 ILogger]: With dead ends: 65 [2019-05-23 11:19:03,368 INFO L146 ILogger]: Without dead ends: 39 [2019-05-23 11:19:03,372 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 11:19:03,390 INFO L146 ILogger]: Start minimizeSevpa. Operand 39 states. [2019-05-23 11:19:03,406 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 39 to 31. [2019-05-23 11:19:03,409 INFO L146 ILogger]: Start removeUnreachable. Operand 31 states. [2019-05-23 11:19:03,410 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2019-05-23 11:19:03,411 INFO L146 ILogger]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 17 [2019-05-23 11:19:03,412 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:03,412 INFO L146 ILogger]: Abstraction has 31 states and 33 transitions. [2019-05-23 11:19:03,412 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:19:03,412 INFO L146 ILogger]: Start isEmpty. Operand 31 states and 33 transitions. [2019-05-23 11:19:03,413 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 23 [2019-05-23 11:19:03,413 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:03,413 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:03,414 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:03,414 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:03,414 INFO L146 ILogger]: Analyzing trace with hash -319460425, now seen corresponding path program 1 times [2019-05-23 11:19:03,415 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:03,415 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:03,416 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:03,416 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:03,416 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:03,434 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:03,492 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:03,492 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:03,492 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 11:19:03,511 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:03,531 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:03,533 INFO L146 ILogger]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:19:03,538 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:03,575 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:03,603 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:03,604 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-05-23 11:19:03,605 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:19:03,605 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:19:03,606 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:19:03,606 INFO L146 ILogger]: Start difference. First operand 31 states and 33 transitions. Second operand 5 states. [2019-05-23 11:19:03,716 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:03,717 INFO L146 ILogger]: Finished difference Result 62 states and 67 transitions. [2019-05-23 11:19:03,717 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:19:03,717 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 22 [2019-05-23 11:19:03,718 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:03,719 INFO L146 ILogger]: With dead ends: 62 [2019-05-23 11:19:03,719 INFO L146 ILogger]: Without dead ends: 48 [2019-05-23 11:19:03,721 INFO L146 ILogger]: 0 DeclaredPredicates, 25 GetRequests, 22 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 11:19:03,721 INFO L146 ILogger]: Start minimizeSevpa. Operand 48 states. [2019-05-23 11:19:03,726 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 48 to 40. [2019-05-23 11:19:03,726 INFO L146 ILogger]: Start removeUnreachable. Operand 40 states. [2019-05-23 11:19:03,727 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2019-05-23 11:19:03,728 INFO L146 ILogger]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 22 [2019-05-23 11:19:03,730 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:03,730 INFO L146 ILogger]: Abstraction has 40 states and 43 transitions. [2019-05-23 11:19:03,731 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:19:03,731 INFO L146 ILogger]: Start isEmpty. Operand 40 states and 43 transitions. [2019-05-23 11:19:03,732 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 28 [2019-05-23 11:19:03,732 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:03,732 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:03,732 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:03,733 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:03,733 INFO L146 ILogger]: Analyzing trace with hash 1292114914, now seen corresponding path program 2 times [2019-05-23 11:19:03,733 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:03,733 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:03,735 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:03,735 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:03,735 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:03,751 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:03,967 INFO L146 ILogger]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:03,968 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:03,968 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 11:19:03,986 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:19:04,028 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:19:04,028 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:04,029 INFO L146 ILogger]: Trace formula consists of 50 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:19:04,031 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:04,058 INFO L146 ILogger]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:04,089 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:04,089 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-05-23 11:19:04,090 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:19:04,090 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:19:04,090 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:19:04,090 INFO L146 ILogger]: Start difference. First operand 40 states and 43 transitions. Second operand 6 states. [2019-05-23 11:19:04,188 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:04,188 INFO L146 ILogger]: Finished difference Result 71 states and 77 transitions. [2019-05-23 11:19:04,189 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:19:04,189 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 27 [2019-05-23 11:19:04,189 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:04,191 INFO L146 ILogger]: With dead ends: 71 [2019-05-23 11:19:04,191 INFO L146 ILogger]: Without dead ends: 57 [2019-05-23 11:19:04,191 INFO L146 ILogger]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:19:04,192 INFO L146 ILogger]: Start minimizeSevpa. Operand 57 states. [2019-05-23 11:19:04,196 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 57 to 49. [2019-05-23 11:19:04,196 INFO L146 ILogger]: Start removeUnreachable. Operand 49 states. [2019-05-23 11:19:04,198 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2019-05-23 11:19:04,198 INFO L146 ILogger]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 27 [2019-05-23 11:19:04,198 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:04,198 INFO L146 ILogger]: Abstraction has 49 states and 53 transitions. [2019-05-23 11:19:04,198 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:19:04,198 INFO L146 ILogger]: Start isEmpty. Operand 49 states and 53 transitions. [2019-05-23 11:19:04,199 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 33 [2019-05-23 11:19:04,199 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:04,200 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:04,200 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:04,200 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:04,201 INFO L146 ILogger]: Analyzing trace with hash 1677971095, now seen corresponding path program 3 times [2019-05-23 11:19:04,201 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:04,201 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:04,202 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:04,202 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:04,202 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:04,218 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:04,322 INFO L146 ILogger]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:04,322 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:04,322 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 11:19:04,343 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:19:04,375 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:19:04,375 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:04,376 INFO L146 ILogger]: Trace formula consists of 57 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:19:04,378 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:04,411 INFO L146 ILogger]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:04,436 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:04,436 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-05-23 11:19:04,437 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:19:04,437 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:19:04,438 INFO L146 ILogger]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:19:04,438 INFO L146 ILogger]: Start difference. First operand 49 states and 53 transitions. Second operand 7 states. [2019-05-23 11:19:04,619 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:04,619 INFO L146 ILogger]: Finished difference Result 80 states and 87 transitions. [2019-05-23 11:19:04,622 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:19:04,622 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 32 [2019-05-23 11:19:04,623 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:04,623 INFO L146 ILogger]: With dead ends: 80 [2019-05-23 11:19:04,624 INFO L146 ILogger]: Without dead ends: 66 [2019-05-23 11:19:04,624 INFO L146 ILogger]: 0 DeclaredPredicates, 37 GetRequests, 32 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 11:19:04,625 INFO L146 ILogger]: Start minimizeSevpa. Operand 66 states. [2019-05-23 11:19:04,631 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 66 to 58. [2019-05-23 11:19:04,631 INFO L146 ILogger]: Start removeUnreachable. Operand 58 states. [2019-05-23 11:19:04,633 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2019-05-23 11:19:04,633 INFO L146 ILogger]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 32 [2019-05-23 11:19:04,633 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:04,633 INFO L146 ILogger]: Abstraction has 58 states and 63 transitions. [2019-05-23 11:19:04,633 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:19:04,633 INFO L146 ILogger]: Start isEmpty. Operand 58 states and 63 transitions. [2019-05-23 11:19:04,634 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 38 [2019-05-23 11:19:04,635 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:04,635 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:04,635 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:04,635 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:04,635 INFO L146 ILogger]: Analyzing trace with hash -941587198, now seen corresponding path program 4 times [2019-05-23 11:19:04,636 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:04,636 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:04,637 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:04,637 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:04,637 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:04,652 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:04,749 INFO L146 ILogger]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:04,750 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:04,750 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 11:19:04,766 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:19:04,808 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:19:04,808 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:04,810 INFO L146 ILogger]: Trace formula consists of 50 conjuncts, 13 conjunts are in the unsatisfiable core [2019-05-23 11:19:04,812 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:04,932 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-05-23 11:19:04,933 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:04,935 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:04,936 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:04,936 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2019-05-23 11:19:05,106 INFO L146 ILogger]: Checked inductivity of 34 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-05-23 11:19:05,142 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:05,143 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 13 [2019-05-23 11:19:05,143 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:19:05,144 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:19:05,144 INFO L146 ILogger]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:19:05,144 INFO L146 ILogger]: Start difference. First operand 58 states and 63 transitions. Second operand 13 states. [2019-05-23 11:19:06,385 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:06,386 INFO L146 ILogger]: Finished difference Result 158 states and 174 transitions. [2019-05-23 11:19:06,386 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:19:06,386 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 37 [2019-05-23 11:19:06,386 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:06,388 INFO L146 ILogger]: With dead ends: 158 [2019-05-23 11:19:06,388 INFO L146 ILogger]: Without dead ends: 144 [2019-05-23 11:19:06,389 INFO L146 ILogger]: 0 DeclaredPredicates, 61 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=194, Invalid=736, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:19:06,389 INFO L146 ILogger]: Start minimizeSevpa. Operand 144 states. [2019-05-23 11:19:06,398 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 144 to 97. [2019-05-23 11:19:06,398 INFO L146 ILogger]: Start removeUnreachable. Operand 97 states. [2019-05-23 11:19:06,399 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 97 states to 97 states and 108 transitions. [2019-05-23 11:19:06,399 INFO L146 ILogger]: Start accepts. Automaton has 97 states and 108 transitions. Word has length 37 [2019-05-23 11:19:06,400 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:06,400 INFO L146 ILogger]: Abstraction has 97 states and 108 transitions. [2019-05-23 11:19:06,400 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:19:06,400 INFO L146 ILogger]: Start isEmpty. Operand 97 states and 108 transitions. [2019-05-23 11:19:06,401 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 46 [2019-05-23 11:19:06,401 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:06,402 INFO L146 ILogger]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:06,402 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:06,402 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:06,402 INFO L146 ILogger]: Analyzing trace with hash -1120897846, now seen corresponding path program 1 times [2019-05-23 11:19:06,403 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:06,403 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:06,404 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:06,404 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:06,404 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:06,418 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:06,515 INFO L146 ILogger]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:06,516 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:06,516 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 11:19:06,526 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:06,553 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:06,554 INFO L146 ILogger]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:19:06,556 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:06,608 INFO L146 ILogger]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:06,626 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:06,626 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2019-05-23 11:19:06,626 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:19:06,627 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:19:06,627 INFO L146 ILogger]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:19:06,627 INFO L146 ILogger]: Start difference. First operand 97 states and 108 transitions. Second operand 9 states. [2019-05-23 11:19:06,707 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:06,708 INFO L146 ILogger]: Finished difference Result 145 states and 162 transitions. [2019-05-23 11:19:06,708 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:19:06,708 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 45 [2019-05-23 11:19:06,708 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:06,710 INFO L146 ILogger]: With dead ends: 145 [2019-05-23 11:19:06,710 INFO L146 ILogger]: Without dead ends: 123 [2019-05-23 11:19:06,710 INFO L146 ILogger]: 0 DeclaredPredicates, 52 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:19:06,711 INFO L146 ILogger]: Start minimizeSevpa. Operand 123 states. [2019-05-23 11:19:06,721 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 123 to 111. [2019-05-23 11:19:06,721 INFO L146 ILogger]: Start removeUnreachable. Operand 111 states. [2019-05-23 11:19:06,723 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 111 states to 111 states and 124 transitions. [2019-05-23 11:19:06,723 INFO L146 ILogger]: Start accepts. Automaton has 111 states and 124 transitions. Word has length 45 [2019-05-23 11:19:06,723 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:06,723 INFO L146 ILogger]: Abstraction has 111 states and 124 transitions. [2019-05-23 11:19:06,724 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:19:06,724 INFO L146 ILogger]: Start isEmpty. Operand 111 states and 124 transitions. [2019-05-23 11:19:06,725 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 51 [2019-05-23 11:19:06,726 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:06,726 INFO L146 ILogger]: trace histogram [6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:06,726 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:06,726 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:06,727 INFO L146 ILogger]: Analyzing trace with hash -441268561, now seen corresponding path program 2 times [2019-05-23 11:19:06,727 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:06,727 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:06,728 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:06,728 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:06,728 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:06,743 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:06,903 INFO L146 ILogger]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:06,903 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:06,903 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 11:19:06,913 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:19:06,954 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:19:06,954 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:06,956 INFO L146 ILogger]: Trace formula consists of 83 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:19:06,958 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:07,067 INFO L146 ILogger]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:07,090 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:07,090 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2019-05-23 11:19:07,090 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:19:07,090 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:19:07,091 INFO L146 ILogger]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:19:07,091 INFO L146 ILogger]: Start difference. First operand 111 states and 124 transitions. Second operand 10 states. [2019-05-23 11:19:07,167 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:07,167 INFO L146 ILogger]: Finished difference Result 159 states and 178 transitions. [2019-05-23 11:19:07,174 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-05-23 11:19:07,174 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 50 [2019-05-23 11:19:07,174 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:07,175 INFO L146 ILogger]: With dead ends: 159 [2019-05-23 11:19:07,175 INFO L146 ILogger]: Without dead ends: 137 [2019-05-23 11:19:07,176 INFO L146 ILogger]: 0 DeclaredPredicates, 58 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:19:07,177 INFO L146 ILogger]: Start minimizeSevpa. Operand 137 states. [2019-05-23 11:19:07,185 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 137 to 125. [2019-05-23 11:19:07,186 INFO L146 ILogger]: Start removeUnreachable. Operand 125 states. [2019-05-23 11:19:07,188 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 125 states to 125 states and 140 transitions. [2019-05-23 11:19:07,188 INFO L146 ILogger]: Start accepts. Automaton has 125 states and 140 transitions. Word has length 50 [2019-05-23 11:19:07,188 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:07,189 INFO L146 ILogger]: Abstraction has 125 states and 140 transitions. [2019-05-23 11:19:07,189 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:19:07,189 INFO L146 ILogger]: Start isEmpty. Operand 125 states and 140 transitions. [2019-05-23 11:19:07,197 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 56 [2019-05-23 11:19:07,197 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:07,197 INFO L146 ILogger]: trace histogram [7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:07,198 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:07,198 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:07,198 INFO L146 ILogger]: Analyzing trace with hash 2109791210, now seen corresponding path program 3 times [2019-05-23 11:19:07,198 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:07,198 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:07,201 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:07,201 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:07,201 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:07,217 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:07,343 INFO L146 ILogger]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:07,343 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:07,343 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 11:19:07,352 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:19:07,366 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:19:07,367 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:07,371 INFO L146 ILogger]: Trace formula consists of 62 conjuncts, 15 conjunts are in the unsatisfiable core [2019-05-23 11:19:07,374 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:07,474 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-05-23 11:19:07,475 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:07,477 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:07,477 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:07,478 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-05-23 11:19:07,551 INFO L146 ILogger]: Checked inductivity of 106 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-05-23 11:19:07,570 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:07,570 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2019-05-23 11:19:07,570 INFO L146 ILogger]: Interpolant automaton has 18 states [2019-05-23 11:19:07,571 INFO L146 ILogger]: Constructing interpolant automaton starting with 18 interpolants. [2019-05-23 11:19:07,571 INFO L146 ILogger]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2019-05-23 11:19:07,571 INFO L146 ILogger]: Start difference. First operand 125 states and 140 transitions. Second operand 18 states. [2019-05-23 11:19:08,348 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:08,348 INFO L146 ILogger]: Finished difference Result 261 states and 292 transitions. [2019-05-23 11:19:08,349 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-05-23 11:19:08,349 INFO L146 ILogger]: Start accepts. Automaton has 18 states. Word has length 55 [2019-05-23 11:19:08,350 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:08,352 INFO L146 ILogger]: With dead ends: 261 [2019-05-23 11:19:08,352 INFO L146 ILogger]: Without dead ends: 239 [2019-05-23 11:19:08,354 INFO L146 ILogger]: 0 DeclaredPredicates, 87 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=381, Invalid=1259, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:19:08,354 INFO L146 ILogger]: Start minimizeSevpa. Operand 239 states. [2019-05-23 11:19:08,361 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 239 to 134. [2019-05-23 11:19:08,362 INFO L146 ILogger]: Start removeUnreachable. Operand 134 states. [2019-05-23 11:19:08,363 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 134 states to 134 states and 150 transitions. [2019-05-23 11:19:08,363 INFO L146 ILogger]: Start accepts. Automaton has 134 states and 150 transitions. Word has length 55 [2019-05-23 11:19:08,363 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:08,363 INFO L146 ILogger]: Abstraction has 134 states and 150 transitions. [2019-05-23 11:19:08,363 INFO L146 ILogger]: Interpolant automaton has 18 states. [2019-05-23 11:19:08,364 INFO L146 ILogger]: Start isEmpty. Operand 134 states and 150 transitions. [2019-05-23 11:19:08,365 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 61 [2019-05-23 11:19:08,365 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:08,365 INFO L146 ILogger]: trace histogram [8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:08,366 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:08,366 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:08,366 INFO L146 ILogger]: Analyzing trace with hash -224518881, now seen corresponding path program 4 times [2019-05-23 11:19:08,366 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:08,366 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:08,367 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:08,367 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:08,367 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:08,379 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:08,483 INFO L146 ILogger]: Checked inductivity of 141 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:08,483 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:08,483 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 11:19:08,493 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:19:08,519 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:19:08,520 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:08,521 INFO L146 ILogger]: Trace formula consists of 79 conjuncts, 17 conjunts are in the unsatisfiable core [2019-05-23 11:19:08,524 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:09,201 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:09,202 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 24 [2019-05-23 11:19:09,203 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:09,215 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:09,215 INFO L146 ILogger]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:09,215 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:36, output treesize:5 [2019-05-23 11:19:09,306 INFO L146 ILogger]: Checked inductivity of 141 backedges. 26 proven. 28 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-05-23 11:19:09,325 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:09,326 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 21 [2019-05-23 11:19:09,326 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:19:09,326 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:19:09,327 INFO L146 ILogger]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:19:09,327 INFO L146 ILogger]: Start difference. First operand 134 states and 150 transitions. Second operand 21 states. [2019-05-23 11:19:13,925 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:13,925 INFO L146 ILogger]: Finished difference Result 385 states and 429 transitions. [2019-05-23 11:19:13,926 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2019-05-23 11:19:13,926 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 60 [2019-05-23 11:19:13,927 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:13,930 INFO L146 ILogger]: With dead ends: 385 [2019-05-23 11:19:13,930 INFO L146 ILogger]: Without dead ends: 363 [2019-05-23 11:19:13,939 INFO L146 ILogger]: 0 DeclaredPredicates, 163 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4835 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2177, Invalid=10705, Unknown=0, NotChecked=0, Total=12882 [2019-05-23 11:19:13,940 INFO L146 ILogger]: Start minimizeSevpa. Operand 363 states. [2019-05-23 11:19:13,952 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 363 to 222. [2019-05-23 11:19:13,953 INFO L146 ILogger]: Start removeUnreachable. Operand 222 states. [2019-05-23 11:19:13,954 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 222 states to 222 states and 249 transitions. [2019-05-23 11:19:13,954 INFO L146 ILogger]: Start accepts. Automaton has 222 states and 249 transitions. Word has length 60 [2019-05-23 11:19:13,955 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:13,955 INFO L146 ILogger]: Abstraction has 222 states and 249 transitions. [2019-05-23 11:19:13,955 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:19:13,955 INFO L146 ILogger]: Start isEmpty. Operand 222 states and 249 transitions. [2019-05-23 11:19:13,957 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 69 [2019-05-23 11:19:13,957 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:13,957 INFO L146 ILogger]: trace histogram [9, 9, 9, 7, 7, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:13,958 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:13,958 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:13,958 INFO L146 ILogger]: Analyzing trace with hash -800021817, now seen corresponding path program 5 times [2019-05-23 11:19:13,958 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:13,958 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:13,959 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:13,960 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:13,960 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:13,972 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:14,085 INFO L146 ILogger]: Checked inductivity of 178 backedges. 0 proven. 178 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:14,085 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:14,085 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 11:19:14,096 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:19:14,128 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2019-05-23 11:19:14,128 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:14,129 INFO L146 ILogger]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2019-05-23 11:19:14,132 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:14,177 INFO L146 ILogger]: Checked inductivity of 178 backedges. 0 proven. 178 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:14,206 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:14,206 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2019-05-23 11:19:14,206 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:19:14,207 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:19:14,207 INFO L146 ILogger]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:19:14,207 INFO L146 ILogger]: Start difference. First operand 222 states and 249 transitions. Second operand 13 states. [2019-05-23 11:19:14,394 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:14,394 INFO L146 ILogger]: Finished difference Result 287 states and 323 transitions. [2019-05-23 11:19:14,394 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:19:14,395 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 68 [2019-05-23 11:19:14,395 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:14,396 INFO L146 ILogger]: With dead ends: 287 [2019-05-23 11:19:14,396 INFO L146 ILogger]: Without dead ends: 265 [2019-05-23 11:19:14,397 INFO L146 ILogger]: 0 DeclaredPredicates, 79 GetRequests, 68 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 11:19:14,398 INFO L146 ILogger]: Start minimizeSevpa. Operand 265 states. [2019-05-23 11:19:14,405 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 265 to 245. [2019-05-23 11:19:14,405 INFO L146 ILogger]: Start removeUnreachable. Operand 245 states. [2019-05-23 11:19:14,406 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 245 states to 245 states and 275 transitions. [2019-05-23 11:19:14,406 INFO L146 ILogger]: Start accepts. Automaton has 245 states and 275 transitions. Word has length 68 [2019-05-23 11:19:14,407 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:14,407 INFO L146 ILogger]: Abstraction has 245 states and 275 transitions. [2019-05-23 11:19:14,407 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:19:14,407 INFO L146 ILogger]: Start isEmpty. Operand 245 states and 275 transitions. [2019-05-23 11:19:14,408 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 74 [2019-05-23 11:19:14,409 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:14,409 INFO L146 ILogger]: trace histogram [10, 10, 10, 8, 8, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:14,409 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:14,409 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:14,409 INFO L146 ILogger]: Analyzing trace with hash 1080086226, now seen corresponding path program 6 times [2019-05-23 11:19:14,410 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:14,410 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:14,410 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:14,411 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:14,411 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:14,422 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:14,567 INFO L146 ILogger]: Checked inductivity of 222 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:19:14,567 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:14,567 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:19:14,579 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:19:14,624 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2019-05-23 11:19:14,624 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:14,625 INFO L146 ILogger]: Trace formula consists of 109 conjuncts, 19 conjunts are in the unsatisfiable core [2019-05-23 11:19:14,627 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:14,935 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:14,936 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 22 [2019-05-23 11:19:14,938 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:14,949 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:14,950 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:14,950 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:32, output treesize:5 [2019-05-23 11:19:15,022 INFO L146 ILogger]: Checked inductivity of 222 backedges. 28 proven. 38 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2019-05-23 11:19:15,041 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:15,041 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 25 [2019-05-23 11:19:15,042 INFO L146 ILogger]: Interpolant automaton has 25 states [2019-05-23 11:19:15,042 INFO L146 ILogger]: Constructing interpolant automaton starting with 25 interpolants. [2019-05-23 11:19:15,042 INFO L146 ILogger]: CoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:19:15,042 INFO L146 ILogger]: Start difference. First operand 245 states and 275 transitions. Second operand 25 states. [2019-05-23 11:19:15,591 WARN L146 ILogger]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2019-05-23 11:19:15,900 WARN L146 ILogger]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2019-05-23 11:19:21,309 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:21,309 INFO L146 ILogger]: Finished difference Result 396 states and 436 transitions. [2019-05-23 11:19:21,310 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2019-05-23 11:19:21,310 INFO L146 ILogger]: Start accepts. Automaton has 25 states. Word has length 73 [2019-05-23 11:19:21,311 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:21,313 INFO L146 ILogger]: With dead ends: 396 [2019-05-23 11:19:21,313 INFO L146 ILogger]: Without dead ends: 374 [2019-05-23 11:19:21,319 INFO L146 ILogger]: 0 DeclaredPredicates, 208 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9007 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=3993, Invalid=17763, Unknown=0, NotChecked=0, Total=21756 [2019-05-23 11:19:21,320 INFO L146 ILogger]: Start minimizeSevpa. Operand 374 states. [2019-05-23 11:19:21,325 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 374 to 127. [2019-05-23 11:19:21,325 INFO L146 ILogger]: Start removeUnreachable. Operand 127 states. [2019-05-23 11:19:21,326 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 127 states to 127 states and 139 transitions. [2019-05-23 11:19:21,326 INFO L146 ILogger]: Start accepts. Automaton has 127 states and 139 transitions. Word has length 73 [2019-05-23 11:19:21,326 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:21,326 INFO L146 ILogger]: Abstraction has 127 states and 139 transitions. [2019-05-23 11:19:21,327 INFO L146 ILogger]: Interpolant automaton has 25 states. [2019-05-23 11:19:21,327 INFO L146 ILogger]: Start isEmpty. Operand 127 states and 139 transitions. [2019-05-23 11:19:21,328 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 83 [2019-05-23 11:19:21,328 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:21,328 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:21,328 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:21,328 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:21,329 INFO L146 ILogger]: Analyzing trace with hash -1478313590, now seen corresponding path program 1 times [2019-05-23 11:19:21,329 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:21,329 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:21,330 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:21,330 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:21,330 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:21,341 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:21,518 INFO L146 ILogger]: Checked inductivity of 292 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-05-23 11:19:21,518 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:21,518 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 11:19:21,535 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:21,553 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:21,554 INFO L146 ILogger]: Trace formula consists of 128 conjuncts, 13 conjunts are in the unsatisfiable core [2019-05-23 11:19:21,556 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:21,586 INFO L146 ILogger]: Checked inductivity of 292 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-05-23 11:19:21,604 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:21,605 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2019-05-23 11:19:21,605 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:19:21,605 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:19:21,605 INFO L146 ILogger]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:19:21,606 INFO L146 ILogger]: Start difference. First operand 127 states and 139 transitions. Second operand 15 states. [2019-05-23 11:19:21,691 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:21,691 INFO L146 ILogger]: Finished difference Result 164 states and 179 transitions. [2019-05-23 11:19:21,692 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-05-23 11:19:21,692 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 82 [2019-05-23 11:19:21,692 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:21,693 INFO L146 ILogger]: With dead ends: 164 [2019-05-23 11:19:21,694 INFO L146 ILogger]: Without dead ends: 144 [2019-05-23 11:19:21,695 INFO L146 ILogger]: 0 DeclaredPredicates, 95 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:19:21,695 INFO L146 ILogger]: Start minimizeSevpa. Operand 144 states. [2019-05-23 11:19:21,699 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 144 to 136. [2019-05-23 11:19:21,700 INFO L146 ILogger]: Start removeUnreachable. Operand 136 states. [2019-05-23 11:19:21,700 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 136 states to 136 states and 149 transitions. [2019-05-23 11:19:21,700 INFO L146 ILogger]: Start accepts. Automaton has 136 states and 149 transitions. Word has length 82 [2019-05-23 11:19:21,701 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:21,701 INFO L146 ILogger]: Abstraction has 136 states and 149 transitions. [2019-05-23 11:19:21,701 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:19:21,701 INFO L146 ILogger]: Start isEmpty. Operand 136 states and 149 transitions. [2019-05-23 11:19:21,702 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 88 [2019-05-23 11:19:21,702 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:21,702 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:21,702 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:21,702 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:21,703 INFO L146 ILogger]: Analyzing trace with hash -16031947, now seen corresponding path program 2 times [2019-05-23 11:19:21,703 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:21,703 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:21,704 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:21,704 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:21,704 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:21,714 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:21,868 INFO L146 ILogger]: Checked inductivity of 348 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-05-23 11:19:21,868 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:21,868 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 11:19:21,876 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:19:21,912 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:19:21,912 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:21,913 INFO L146 ILogger]: Trace formula consists of 135 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:19:21,915 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:22,018 INFO L146 ILogger]: Checked inductivity of 348 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-05-23 11:19:22,039 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:22,039 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2019-05-23 11:19:22,039 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:19:22,039 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:19:22,040 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:19:22,040 INFO L146 ILogger]: Start difference. First operand 136 states and 149 transitions. Second operand 16 states. [2019-05-23 11:19:22,140 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:22,141 INFO L146 ILogger]: Finished difference Result 173 states and 189 transitions. [2019-05-23 11:19:22,146 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-05-23 11:19:22,146 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 87 [2019-05-23 11:19:22,146 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:22,147 INFO L146 ILogger]: With dead ends: 173 [2019-05-23 11:19:22,147 INFO L146 ILogger]: Without dead ends: 153 [2019-05-23 11:19:22,148 INFO L146 ILogger]: 0 DeclaredPredicates, 101 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:19:22,148 INFO L146 ILogger]: Start minimizeSevpa. Operand 153 states. [2019-05-23 11:19:22,152 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 153 to 145. [2019-05-23 11:19:22,152 INFO L146 ILogger]: Start removeUnreachable. Operand 145 states. [2019-05-23 11:19:22,153 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 145 states to 145 states and 159 transitions. [2019-05-23 11:19:22,153 INFO L146 ILogger]: Start accepts. Automaton has 145 states and 159 transitions. Word has length 87 [2019-05-23 11:19:22,153 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:22,153 INFO L146 ILogger]: Abstraction has 145 states and 159 transitions. [2019-05-23 11:19:22,153 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:19:22,154 INFO L146 ILogger]: Start isEmpty. Operand 145 states and 159 transitions. [2019-05-23 11:19:22,154 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 93 [2019-05-23 11:19:22,155 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:22,155 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:22,155 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:22,155 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:22,155 INFO L146 ILogger]: Analyzing trace with hash -1806791574, now seen corresponding path program 3 times [2019-05-23 11:19:22,156 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:22,156 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:22,156 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:22,157 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:22,157 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:22,166 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:22,351 INFO L146 ILogger]: Checked inductivity of 409 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-05-23 11:19:22,352 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:22,352 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 11:19:22,361 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:19:22,385 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2019-05-23 11:19:22,385 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:22,386 INFO L146 ILogger]: Trace formula consists of 107 conjuncts, 26 conjunts are in the unsatisfiable core [2019-05-23 11:19:22,388 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:22,599 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-05-23 11:19:22,600 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:22,601 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:22,601 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:22,601 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-05-23 11:19:22,665 INFO L146 ILogger]: Checked inductivity of 409 backedges. 0 proven. 101 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2019-05-23 11:19:22,683 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:22,683 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 29 [2019-05-23 11:19:22,684 INFO L146 ILogger]: Interpolant automaton has 29 states [2019-05-23 11:19:22,684 INFO L146 ILogger]: Constructing interpolant automaton starting with 29 interpolants. [2019-05-23 11:19:22,685 INFO L146 ILogger]: CoverageRelationStatistics Valid=189, Invalid=623, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:19:22,685 INFO L146 ILogger]: Start difference. First operand 145 states and 159 transitions. Second operand 29 states. [2019-05-23 11:19:24,460 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:24,461 INFO L146 ILogger]: Finished difference Result 325 states and 358 transitions. [2019-05-23 11:19:24,461 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2019-05-23 11:19:24,461 INFO L146 ILogger]: Start accepts. Automaton has 29 states. Word has length 92 [2019-05-23 11:19:24,462 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:24,464 INFO L146 ILogger]: With dead ends: 325 [2019-05-23 11:19:24,464 INFO L146 ILogger]: Without dead ends: 305 [2019-05-23 11:19:24,466 INFO L146 ILogger]: 0 DeclaredPredicates, 158 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1901 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1267, Invalid=5053, Unknown=0, NotChecked=0, Total=6320 [2019-05-23 11:19:24,467 INFO L146 ILogger]: Start minimizeSevpa. Operand 305 states. [2019-05-23 11:19:24,473 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 305 to 228. [2019-05-23 11:19:24,473 INFO L146 ILogger]: Start removeUnreachable. Operand 228 states. [2019-05-23 11:19:24,474 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 228 states to 228 states and 256 transitions. [2019-05-23 11:19:24,474 INFO L146 ILogger]: Start accepts. Automaton has 228 states and 256 transitions. Word has length 92 [2019-05-23 11:19:24,475 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:24,475 INFO L146 ILogger]: Abstraction has 228 states and 256 transitions. [2019-05-23 11:19:24,475 INFO L146 ILogger]: Interpolant automaton has 29 states. [2019-05-23 11:19:24,475 INFO L146 ILogger]: Start isEmpty. Operand 228 states and 256 transitions. [2019-05-23 11:19:24,476 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 101 [2019-05-23 11:19:24,476 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:24,476 INFO L146 ILogger]: trace histogram [14, 14, 14, 13, 13, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:24,476 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:24,477 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:24,477 INFO L146 ILogger]: Analyzing trace with hash -469633742, now seen corresponding path program 1 times [2019-05-23 11:19:24,477 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:24,477 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:24,478 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:24,478 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:24,478 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:24,488 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:24,664 INFO L146 ILogger]: Checked inductivity of 462 backedges. 0 proven. 456 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-05-23 11:19:24,665 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:24,665 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 11:19:24,673 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:24,693 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:24,694 INFO L146 ILogger]: Trace formula consists of 154 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:19:24,695 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:24,739 INFO L146 ILogger]: Checked inductivity of 462 backedges. 0 proven. 456 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-05-23 11:19:24,758 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:24,758 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2019-05-23 11:19:24,758 INFO L146 ILogger]: Interpolant automaton has 18 states [2019-05-23 11:19:24,759 INFO L146 ILogger]: Constructing interpolant automaton starting with 18 interpolants. [2019-05-23 11:19:24,759 INFO L146 ILogger]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-05-23 11:19:24,759 INFO L146 ILogger]: Start difference. First operand 228 states and 256 transitions. Second operand 18 states. [2019-05-23 11:19:24,866 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:24,866 INFO L146 ILogger]: Finished difference Result 286 states and 320 transitions. [2019-05-23 11:19:24,866 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-05-23 11:19:24,867 INFO L146 ILogger]: Start accepts. Automaton has 18 states. Word has length 100 [2019-05-23 11:19:24,867 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:24,868 INFO L146 ILogger]: With dead ends: 286 [2019-05-23 11:19:24,869 INFO L146 ILogger]: Without dead ends: 254 [2019-05-23 11:19:24,869 INFO L146 ILogger]: 0 DeclaredPredicates, 116 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-05-23 11:19:24,870 INFO L146 ILogger]: Start minimizeSevpa. Operand 254 states. [2019-05-23 11:19:24,879 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 254 to 242. [2019-05-23 11:19:24,879 INFO L146 ILogger]: Start removeUnreachable. Operand 242 states. [2019-05-23 11:19:24,880 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 242 states to 242 states and 272 transitions. [2019-05-23 11:19:24,880 INFO L146 ILogger]: Start accepts. Automaton has 242 states and 272 transitions. Word has length 100 [2019-05-23 11:19:24,880 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:24,880 INFO L146 ILogger]: Abstraction has 242 states and 272 transitions. [2019-05-23 11:19:24,880 INFO L146 ILogger]: Interpolant automaton has 18 states. [2019-05-23 11:19:24,881 INFO L146 ILogger]: Start isEmpty. Operand 242 states and 272 transitions. [2019-05-23 11:19:24,882 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 106 [2019-05-23 11:19:24,882 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:24,882 INFO L146 ILogger]: trace histogram [15, 15, 15, 14, 14, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:24,882 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:24,882 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:24,883 INFO L146 ILogger]: Analyzing trace with hash 1256664205, now seen corresponding path program 2 times [2019-05-23 11:19:24,883 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:24,883 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:24,883 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:24,884 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:24,884 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:24,894 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:25,118 INFO L146 ILogger]: Checked inductivity of 532 backedges. 0 proven. 526 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-05-23 11:19:25,119 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:25,119 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 11:19:25,127 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:19:25,151 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:19:25,152 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:25,153 INFO L146 ILogger]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2019-05-23 11:19:25,155 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:25,173 INFO L146 ILogger]: Checked inductivity of 532 backedges. 0 proven. 526 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-05-23 11:19:25,191 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:25,191 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2019-05-23 11:19:25,192 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:19:25,192 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:19:25,192 INFO L146 ILogger]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:19:25,192 INFO L146 ILogger]: Start difference. First operand 242 states and 272 transitions. Second operand 19 states. [2019-05-23 11:19:25,316 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:25,316 INFO L146 ILogger]: Finished difference Result 300 states and 336 transitions. [2019-05-23 11:19:25,317 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:19:25,317 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 105 [2019-05-23 11:19:25,317 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:25,318 INFO L146 ILogger]: With dead ends: 300 [2019-05-23 11:19:25,319 INFO L146 ILogger]: Without dead ends: 268 [2019-05-23 11:19:25,320 INFO L146 ILogger]: 0 DeclaredPredicates, 122 GetRequests, 105 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 11:19:25,320 INFO L146 ILogger]: Start minimizeSevpa. Operand 268 states. [2019-05-23 11:19:25,327 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 268 to 256. [2019-05-23 11:19:25,327 INFO L146 ILogger]: Start removeUnreachable. Operand 256 states. [2019-05-23 11:19:25,328 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 256 states to 256 states and 288 transitions. [2019-05-23 11:19:25,328 INFO L146 ILogger]: Start accepts. Automaton has 256 states and 288 transitions. Word has length 105 [2019-05-23 11:19:25,329 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:25,329 INFO L146 ILogger]: Abstraction has 256 states and 288 transitions. [2019-05-23 11:19:25,329 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:19:25,329 INFO L146 ILogger]: Start isEmpty. Operand 256 states and 288 transitions. [2019-05-23 11:19:25,330 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 111 [2019-05-23 11:19:25,330 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:25,330 INFO L146 ILogger]: trace histogram [16, 16, 16, 15, 15, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:25,331 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:25,331 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:25,331 INFO L146 ILogger]: Analyzing trace with hash -520792558, now seen corresponding path program 3 times [2019-05-23 11:19:25,331 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:25,331 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:25,332 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:25,332 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:25,332 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:25,343 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:25,749 INFO L146 ILogger]: Checked inductivity of 607 backedges. 0 proven. 601 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-05-23 11:19:25,750 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:25,750 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 11:19:25,767 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:19:25,795 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2019-05-23 11:19:25,795 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:25,796 INFO L146 ILogger]: Trace formula consists of 112 conjuncts, 26 conjunts are in the unsatisfiable core [2019-05-23 11:19:25,798 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:26,027 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-05-23 11:19:26,028 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:26,029 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:26,029 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:26,029 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-05-23 11:19:26,104 INFO L146 ILogger]: Checked inductivity of 607 backedges. 0 proven. 124 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2019-05-23 11:19:26,123 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:26,123 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15] total 32 [2019-05-23 11:19:26,124 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:19:26,124 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:19:26,124 INFO L146 ILogger]: CoverageRelationStatistics Valid=246, Invalid=746, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:19:26,125 INFO L146 ILogger]: Start difference. First operand 256 states and 288 transitions. Second operand 32 states. [2019-05-23 11:19:28,508 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:28,508 INFO L146 ILogger]: Finished difference Result 476 states and 532 transitions. [2019-05-23 11:19:28,509 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2019-05-23 11:19:28,509 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 110 [2019-05-23 11:19:28,509 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:28,511 INFO L146 ILogger]: With dead ends: 476 [2019-05-23 11:19:28,511 INFO L146 ILogger]: Without dead ends: 444 [2019-05-23 11:19:28,513 INFO L146 ILogger]: 0 DeclaredPredicates, 172 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1573 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1189, Invalid=4511, Unknown=0, NotChecked=0, Total=5700 [2019-05-23 11:19:28,513 INFO L146 ILogger]: Start minimizeSevpa. Operand 444 states. [2019-05-23 11:19:28,520 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 444 to 265. [2019-05-23 11:19:28,521 INFO L146 ILogger]: Start removeUnreachable. Operand 265 states. [2019-05-23 11:19:28,521 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 265 states to 265 states and 298 transitions. [2019-05-23 11:19:28,522 INFO L146 ILogger]: Start accepts. Automaton has 265 states and 298 transitions. Word has length 110 [2019-05-23 11:19:28,522 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:28,522 INFO L146 ILogger]: Abstraction has 265 states and 298 transitions. [2019-05-23 11:19:28,522 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:19:28,522 INFO L146 ILogger]: Start isEmpty. Operand 265 states and 298 transitions. [2019-05-23 11:19:28,523 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 116 [2019-05-23 11:19:28,523 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:28,524 INFO L146 ILogger]: trace histogram [17, 17, 17, 16, 16, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:28,524 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:28,524 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:28,524 INFO L146 ILogger]: Analyzing trace with hash -2101207747, now seen corresponding path program 4 times [2019-05-23 11:19:28,524 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:28,525 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:28,525 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:28,525 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:28,525 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:28,535 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:28,766 INFO L146 ILogger]: Checked inductivity of 687 backedges. 0 proven. 681 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-05-23 11:19:28,766 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:28,766 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 11:19:28,775 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:19:28,797 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:19:28,798 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:28,798 INFO L146 ILogger]: Trace formula consists of 147 conjuncts, 28 conjunts are in the unsatisfiable core [2019-05-23 11:19:28,800 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:29,915 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:29,916 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 26 [2019-05-23 11:19:29,917 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:29,920 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:29,921 INFO L146 ILogger]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:29,921 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:40, output treesize:5 [2019-05-23 11:19:30,046 INFO L146 ILogger]: Checked inductivity of 687 backedges. 58 proven. 146 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2019-05-23 11:19:30,065 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:30,065 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 35 [2019-05-23 11:19:30,065 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:19:30,065 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:19:30,066 INFO L146 ILogger]: CoverageRelationStatistics Valid=251, Invalid=939, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:19:30,066 INFO L146 ILogger]: Start difference. First operand 265 states and 298 transitions. Second operand 35 states. [2019-05-23 11:19:33,651 WARN L146 ILogger]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2019-05-23 11:19:39,706 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:39,706 INFO L146 ILogger]: Finished difference Result 690 states and 767 transitions. [2019-05-23 11:19:39,706 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2019-05-23 11:19:39,706 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 115 [2019-05-23 11:19:39,707 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:39,710 INFO L146 ILogger]: With dead ends: 690 [2019-05-23 11:19:39,711 INFO L146 ILogger]: Without dead ends: 658 [2019-05-23 11:19:39,717 INFO L146 ILogger]: 0 DeclaredPredicates, 312 GetRequests, 99 SyntacticMatches, 2 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19182 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=7353, Invalid=37803, Unknown=0, NotChecked=0, Total=45156 [2019-05-23 11:19:39,717 INFO L146 ILogger]: Start minimizeSevpa. Operand 658 states. [2019-05-23 11:19:39,728 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 658 to 425. [2019-05-23 11:19:39,728 INFO L146 ILogger]: Start removeUnreachable. Operand 425 states. [2019-05-23 11:19:39,729 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 425 states to 425 states and 477 transitions. [2019-05-23 11:19:39,729 INFO L146 ILogger]: Start accepts. Automaton has 425 states and 477 transitions. Word has length 115 [2019-05-23 11:19:39,730 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:39,730 INFO L146 ILogger]: Abstraction has 425 states and 477 transitions. [2019-05-23 11:19:39,730 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:19:39,730 INFO L146 ILogger]: Start isEmpty. Operand 425 states and 477 transitions. [2019-05-23 11:19:39,731 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 124 [2019-05-23 11:19:39,731 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:39,731 INFO L146 ILogger]: trace histogram [18, 18, 18, 16, 16, 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] [2019-05-23 11:19:39,732 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:39,732 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:39,732 INFO L146 ILogger]: Analyzing trace with hash -142832155, now seen corresponding path program 5 times [2019-05-23 11:19:39,732 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:39,732 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:39,733 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:39,733 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:39,733 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:39,744 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:40,502 INFO L146 ILogger]: Checked inductivity of 760 backedges. 0 proven. 754 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-05-23 11:19:40,502 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:40,502 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 11:19:40,512 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:19:40,568 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2019-05-23 11:19:40,568 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:40,569 INFO L146 ILogger]: Trace formula consists of 187 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:19:40,571 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:40,688 INFO L146 ILogger]: Checked inductivity of 760 backedges. 0 proven. 754 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-05-23 11:19:40,716 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:40,717 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2019-05-23 11:19:40,717 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:19:40,717 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:19:40,718 INFO L146 ILogger]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:19:40,718 INFO L146 ILogger]: Start difference. First operand 425 states and 477 transitions. Second operand 22 states. [2019-05-23 11:19:40,981 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:40,981 INFO L146 ILogger]: Finished difference Result 500 states and 561 transitions. [2019-05-23 11:19:40,981 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:19:40,982 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 123 [2019-05-23 11:19:40,982 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:40,984 INFO L146 ILogger]: With dead ends: 500 [2019-05-23 11:19:40,985 INFO L146 ILogger]: Without dead ends: 468 [2019-05-23 11:19:40,985 INFO L146 ILogger]: 0 DeclaredPredicates, 143 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:19:40,986 INFO L146 ILogger]: Start minimizeSevpa. Operand 468 states. [2019-05-23 11:19:40,996 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 468 to 448. [2019-05-23 11:19:40,996 INFO L146 ILogger]: Start removeUnreachable. Operand 448 states. [2019-05-23 11:19:40,997 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 448 states to 448 states and 503 transitions. [2019-05-23 11:19:40,997 INFO L146 ILogger]: Start accepts. Automaton has 448 states and 503 transitions. Word has length 123 [2019-05-23 11:19:40,997 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:40,998 INFO L146 ILogger]: Abstraction has 448 states and 503 transitions. [2019-05-23 11:19:40,998 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:19:40,998 INFO L146 ILogger]: Start isEmpty. Operand 448 states and 503 transitions. [2019-05-23 11:19:40,999 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 129 [2019-05-23 11:19:40,999 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:40,999 INFO L146 ILogger]: trace histogram [19, 19, 19, 17, 17, 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] [2019-05-23 11:19:40,999 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:41,000 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:41,000 INFO L146 ILogger]: Analyzing trace with hash -440464454, now seen corresponding path program 6 times [2019-05-23 11:19:41,000 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:41,000 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:41,001 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:41,001 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:41,001 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:41,012 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:42,128 INFO L146 ILogger]: Checked inductivity of 849 backedges. 0 proven. 843 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-05-23 11:19:42,128 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:42,128 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:19:42,137 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:19:42,184 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2019-05-23 11:19:42,184 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:42,185 INFO L146 ILogger]: Trace formula consists of 194 conjuncts, 21 conjunts are in the unsatisfiable core [2019-05-23 11:19:42,186 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:42,205 INFO L146 ILogger]: Checked inductivity of 849 backedges. 0 proven. 843 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-05-23 11:19:42,223 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:42,224 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2019-05-23 11:19:42,224 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:19:42,224 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:19:42,224 INFO L146 ILogger]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:19:42,225 INFO L146 ILogger]: Start difference. First operand 448 states and 503 transitions. Second operand 23 states. [2019-05-23 11:19:42,422 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:42,423 INFO L146 ILogger]: Finished difference Result 523 states and 587 transitions. [2019-05-23 11:19:42,425 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-05-23 11:19:42,425 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 128 [2019-05-23 11:19:42,426 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:42,428 INFO L146 ILogger]: With dead ends: 523 [2019-05-23 11:19:42,428 INFO L146 ILogger]: Without dead ends: 491 [2019-05-23 11:19:42,428 INFO L146 ILogger]: 0 DeclaredPredicates, 149 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:19:42,429 INFO L146 ILogger]: Start minimizeSevpa. Operand 491 states. [2019-05-23 11:19:42,439 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 491 to 471. [2019-05-23 11:19:42,440 INFO L146 ILogger]: Start removeUnreachable. Operand 471 states. [2019-05-23 11:19:42,440 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 471 states to 471 states and 529 transitions. [2019-05-23 11:19:42,441 INFO L146 ILogger]: Start accepts. Automaton has 471 states and 529 transitions. Word has length 128 [2019-05-23 11:19:42,441 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:42,441 INFO L146 ILogger]: Abstraction has 471 states and 529 transitions. [2019-05-23 11:19:42,441 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:19:42,441 INFO L146 ILogger]: Start isEmpty. Operand 471 states and 529 transitions. [2019-05-23 11:19:42,442 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 134 [2019-05-23 11:19:42,442 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:42,443 INFO L146 ILogger]: trace histogram [20, 20, 20, 18, 18, 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] [2019-05-23 11:19:42,443 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:42,443 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:42,443 INFO L146 ILogger]: Analyzing trace with hash 1241180933, now seen corresponding path program 7 times [2019-05-23 11:19:42,443 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:42,443 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:42,444 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:42,444 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:42,444 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:42,457 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:42,777 INFO L146 ILogger]: Checked inductivity of 943 backedges. 0 proven. 937 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-05-23 11:19:42,777 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:42,777 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:19:42,785 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:42,815 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:42,816 INFO L146 ILogger]: Trace formula consists of 201 conjuncts, 22 conjunts are in the unsatisfiable core [2019-05-23 11:19:42,818 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:42,839 INFO L146 ILogger]: Checked inductivity of 943 backedges. 0 proven. 937 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-05-23 11:19:42,857 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:42,857 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2019-05-23 11:19:42,858 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:19:42,858 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:19:42,858 INFO L146 ILogger]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:19:42,858 INFO L146 ILogger]: Start difference. First operand 471 states and 529 transitions. Second operand 24 states. [2019-05-23 11:19:43,038 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:43,039 INFO L146 ILogger]: Finished difference Result 546 states and 613 transitions. [2019-05-23 11:19:43,039 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-05-23 11:19:43,039 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 133 [2019-05-23 11:19:43,040 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:43,042 INFO L146 ILogger]: With dead ends: 546 [2019-05-23 11:19:43,042 INFO L146 ILogger]: Without dead ends: 514 [2019-05-23 11:19:43,043 INFO L146 ILogger]: 0 DeclaredPredicates, 155 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:19:43,043 INFO L146 ILogger]: Start minimizeSevpa. Operand 514 states. [2019-05-23 11:19:43,058 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 514 to 494. [2019-05-23 11:19:43,059 INFO L146 ILogger]: Start removeUnreachable. Operand 494 states. [2019-05-23 11:19:43,060 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 494 states to 494 states and 555 transitions. [2019-05-23 11:19:43,060 INFO L146 ILogger]: Start accepts. Automaton has 494 states and 555 transitions. Word has length 133 [2019-05-23 11:19:43,061 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:43,061 INFO L146 ILogger]: Abstraction has 494 states and 555 transitions. [2019-05-23 11:19:43,061 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:19:43,061 INFO L146 ILogger]: Start isEmpty. Operand 494 states and 555 transitions. [2019-05-23 11:19:43,063 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 139 [2019-05-23 11:19:43,063 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:43,064 INFO L146 ILogger]: trace histogram [21, 21, 21, 19, 19, 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] [2019-05-23 11:19:43,064 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:43,064 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:43,064 INFO L146 ILogger]: Analyzing trace with hash 1531830938, now seen corresponding path program 8 times [2019-05-23 11:19:43,065 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:43,065 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:43,065 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:43,066 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:43,066 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:43,079 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:43,556 INFO L146 ILogger]: Checked inductivity of 1042 backedges. 0 proven. 1036 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-05-23 11:19:43,557 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:43,557 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:19:43,566 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:19:43,596 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:19:43,596 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:43,597 INFO L146 ILogger]: Trace formula consists of 208 conjuncts, 23 conjunts are in the unsatisfiable core [2019-05-23 11:19:43,598 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:43,622 INFO L146 ILogger]: Checked inductivity of 1042 backedges. 0 proven. 1036 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-05-23 11:19:43,650 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:43,650 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2019-05-23 11:19:43,651 INFO L146 ILogger]: Interpolant automaton has 25 states [2019-05-23 11:19:43,651 INFO L146 ILogger]: Constructing interpolant automaton starting with 25 interpolants. [2019-05-23 11:19:43,651 INFO L146 ILogger]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:19:43,651 INFO L146 ILogger]: Start difference. First operand 494 states and 555 transitions. Second operand 25 states. [2019-05-23 11:19:43,872 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:43,872 INFO L146 ILogger]: Finished difference Result 569 states and 639 transitions. [2019-05-23 11:19:43,873 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:19:43,873 INFO L146 ILogger]: Start accepts. Automaton has 25 states. Word has length 138 [2019-05-23 11:19:43,874 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:43,875 INFO L146 ILogger]: With dead ends: 569 [2019-05-23 11:19:43,876 INFO L146 ILogger]: Without dead ends: 537 [2019-05-23 11:19:43,876 INFO L146 ILogger]: 0 DeclaredPredicates, 161 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:19:43,877 INFO L146 ILogger]: Start minimizeSevpa. Operand 537 states. [2019-05-23 11:19:43,887 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 537 to 517. [2019-05-23 11:19:43,887 INFO L146 ILogger]: Start removeUnreachable. Operand 517 states. [2019-05-23 11:19:43,888 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 517 states to 517 states and 581 transitions. [2019-05-23 11:19:43,888 INFO L146 ILogger]: Start accepts. Automaton has 517 states and 581 transitions. Word has length 138 [2019-05-23 11:19:43,888 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:43,889 INFO L146 ILogger]: Abstraction has 517 states and 581 transitions. [2019-05-23 11:19:43,889 INFO L146 ILogger]: Interpolant automaton has 25 states. [2019-05-23 11:19:43,889 INFO L146 ILogger]: Start isEmpty. Operand 517 states and 581 transitions. [2019-05-23 11:19:43,890 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 144 [2019-05-23 11:19:43,890 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:43,890 INFO L146 ILogger]: trace histogram [22, 22, 22, 20, 20, 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] [2019-05-23 11:19:43,890 INFO L146 ILogger]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:43,890 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:43,890 INFO L146 ILogger]: Analyzing trace with hash -931176411, now seen corresponding path program 9 times [2019-05-23 11:19:43,890 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:43,890 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:43,891 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:43,891 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:43,891 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:43,902 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:44,287 INFO L146 ILogger]: Checked inductivity of 1146 backedges. 0 proven. 1140 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-05-23 11:19:44,287 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:44,287 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:19:44,295 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:19:44,328 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-05-23 11:19:44,329 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:44,330 INFO L146 ILogger]: Trace formula consists of 131 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:19:44,332 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:45,440 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:45,441 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 22 [2019-05-23 11:19:45,441 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:45,445 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:45,445 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:45,446 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:32, output treesize:5 [2019-05-23 11:19:45,595 INFO L146 ILogger]: Checked inductivity of 1146 backedges. 61 proven. 192 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2019-05-23 11:19:45,616 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:45,616 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 19] total 42 [2019-05-23 11:19:45,616 INFO L146 ILogger]: Interpolant automaton has 42 states [2019-05-23 11:19:45,617 INFO L146 ILogger]: Constructing interpolant automaton starting with 42 interpolants. [2019-05-23 11:19:45,617 INFO L146 ILogger]: CoverageRelationStatistics Valid=407, Invalid=1315, Unknown=0, NotChecked=0, Total=1722 [2019-05-23 11:19:45,617 INFO L146 ILogger]: Start difference. First operand 517 states and 581 transitions. Second operand 42 states. [2019-05-23 11:19:55,065 WARN L146 ILogger]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2019-05-23 11:19:59,065 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:59,065 INFO L146 ILogger]: Finished difference Result 742 states and 816 transitions. [2019-05-23 11:19:59,066 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 259 states. [2019-05-23 11:19:59,066 INFO L146 ILogger]: Start accepts. Automaton has 42 states. Word has length 143 [2019-05-23 11:19:59,066 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:59,070 INFO L146 ILogger]: With dead ends: 742 [2019-05-23 11:19:59,070 INFO L146 ILogger]: Without dead ends: 710 [2019-05-23 11:19:59,074 INFO L146 ILogger]: 0 DeclaredPredicates, 416 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 289 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38971 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=15184, Invalid=69206, Unknown=0, NotChecked=0, Total=84390 [2019-05-23 11:19:59,075 INFO L146 ILogger]: Start minimizeSevpa. Operand 710 states. [2019-05-23 11:19:59,082 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 710 to 245. [2019-05-23 11:19:59,082 INFO L146 ILogger]: Start removeUnreachable. Operand 245 states. [2019-05-23 11:19:59,083 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 245 states to 245 states and 269 transitions. [2019-05-23 11:19:59,083 INFO L146 ILogger]: Start accepts. Automaton has 245 states and 269 transitions. Word has length 143 [2019-05-23 11:19:59,083 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:59,083 INFO L146 ILogger]: Abstraction has 245 states and 269 transitions. [2019-05-23 11:19:59,084 INFO L146 ILogger]: Interpolant automaton has 42 states. [2019-05-23 11:19:59,084 INFO L146 ILogger]: Start isEmpty. Operand 245 states and 269 transitions. [2019-05-23 11:19:59,085 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 153 [2019-05-23 11:19:59,085 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:59,085 INFO L146 ILogger]: trace histogram [23, 23, 23, 23, 23, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:59,085 INFO L146 ILogger]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:59,085 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:59,086 INFO L146 ILogger]: Analyzing trace with hash 527666813, now seen corresponding path program 4 times [2019-05-23 11:19:59,086 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:59,086 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:59,086 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:59,086 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:59,087 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:59,098 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:59,521 INFO L146 ILogger]: Checked inductivity of 1310 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-05-23 11:19:59,521 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:59,521 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:19:59,529 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:19:59,557 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:19:59,557 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:59,558 INFO L146 ILogger]: Trace formula consists of 192 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:19:59,560 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:59,849 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2019-05-23 11:19:59,849 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:59,853 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:59,853 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:59,853 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2019-05-23 11:20:00,072 INFO L146 ILogger]: Checked inductivity of 1310 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 1010 trivial. 0 not checked. [2019-05-23 11:20:00,090 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:00,091 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 17] total 40 [2019-05-23 11:20:00,091 INFO L146 ILogger]: Interpolant automaton has 40 states [2019-05-23 11:20:00,091 INFO L146 ILogger]: Constructing interpolant automaton starting with 40 interpolants. [2019-05-23 11:20:00,091 INFO L146 ILogger]: CoverageRelationStatistics Valid=407, Invalid=1153, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:20:00,092 INFO L146 ILogger]: Start difference. First operand 245 states and 269 transitions. Second operand 40 states. [2019-05-23 11:20:02,198 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:02,198 INFO L146 ILogger]: Finished difference Result 517 states and 569 transitions. [2019-05-23 11:20:02,198 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2019-05-23 11:20:02,199 INFO L146 ILogger]: Start accepts. Automaton has 40 states. Word has length 152 [2019-05-23 11:20:02,199 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:02,201 INFO L146 ILogger]: With dead ends: 517 [2019-05-23 11:20:02,201 INFO L146 ILogger]: Without dead ends: 487 [2019-05-23 11:20:02,202 INFO L146 ILogger]: 0 DeclaredPredicates, 236 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2545 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1929, Invalid=7773, Unknown=0, NotChecked=0, Total=9702 [2019-05-23 11:20:02,202 INFO L146 ILogger]: Start minimizeSevpa. Operand 487 states. [2019-05-23 11:20:02,212 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 487 to 373. [2019-05-23 11:20:02,213 INFO L146 ILogger]: Start removeUnreachable. Operand 373 states. [2019-05-23 11:20:02,213 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 373 states to 373 states and 420 transitions. [2019-05-23 11:20:02,214 INFO L146 ILogger]: Start accepts. Automaton has 373 states and 420 transitions. Word has length 152 [2019-05-23 11:20:02,214 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:02,214 INFO L146 ILogger]: Abstraction has 373 states and 420 transitions. [2019-05-23 11:20:02,214 INFO L146 ILogger]: Interpolant automaton has 40 states. [2019-05-23 11:20:02,214 INFO L146 ILogger]: Start isEmpty. Operand 373 states and 420 transitions. [2019-05-23 11:20:02,215 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 161 [2019-05-23 11:20:02,215 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:02,216 INFO L146 ILogger]: trace histogram [24, 24, 24, 23, 23, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:02,216 INFO L146 ILogger]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:02,216 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:02,216 INFO L146 ILogger]: Analyzing trace with hash 2013749173, now seen corresponding path program 10 times [2019-05-23 11:20:02,216 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:02,216 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:02,217 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:02,217 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:02,217 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:02,229 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:02,714 INFO L146 ILogger]: Checked inductivity of 1403 backedges. 0 proven. 1381 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-05-23 11:20:02,714 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:02,714 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:02,725 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:20:02,754 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:20:02,754 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:02,755 INFO L146 ILogger]: Trace formula consists of 203 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:20:02,757 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:02,995 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2019-05-23 11:20:02,996 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:02,997 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:02,997 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:02,997 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2019-05-23 11:20:03,097 INFO L146 ILogger]: Checked inductivity of 1403 backedges. 0 proven. 311 refuted. 0 times theorem prover too weak. 1092 trivial. 0 not checked. [2019-05-23 11:20:03,115 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:03,115 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 17] total 41 [2019-05-23 11:20:03,115 INFO L146 ILogger]: Interpolant automaton has 41 states [2019-05-23 11:20:03,116 INFO L146 ILogger]: Constructing interpolant automaton starting with 41 interpolants. [2019-05-23 11:20:03,116 INFO L146 ILogger]: CoverageRelationStatistics Valid=435, Invalid=1205, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:20:03,116 INFO L146 ILogger]: Start difference. First operand 373 states and 420 transitions. Second operand 41 states. [2019-05-23 11:20:05,148 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:05,149 INFO L146 ILogger]: Finished difference Result 669 states and 747 transitions. [2019-05-23 11:20:05,149 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2019-05-23 11:20:05,149 INFO L146 ILogger]: Start accepts. Automaton has 41 states. Word has length 160 [2019-05-23 11:20:05,149 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:05,152 INFO L146 ILogger]: With dead ends: 669 [2019-05-23 11:20:05,152 INFO L146 ILogger]: Without dead ends: 627 [2019-05-23 11:20:05,153 INFO L146 ILogger]: 0 DeclaredPredicates, 224 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1280 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1205, Invalid=4957, Unknown=0, NotChecked=0, Total=6162 [2019-05-23 11:20:05,153 INFO L146 ILogger]: Start minimizeSevpa. Operand 627 states. [2019-05-23 11:20:05,164 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 627 to 382. [2019-05-23 11:20:05,165 INFO L146 ILogger]: Start removeUnreachable. Operand 382 states. [2019-05-23 11:20:05,165 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 382 states to 382 states and 430 transitions. [2019-05-23 11:20:05,166 INFO L146 ILogger]: Start accepts. Automaton has 382 states and 430 transitions. Word has length 160 [2019-05-23 11:20:05,166 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:05,166 INFO L146 ILogger]: Abstraction has 382 states and 430 transitions. [2019-05-23 11:20:05,166 INFO L146 ILogger]: Interpolant automaton has 41 states. [2019-05-23 11:20:05,166 INFO L146 ILogger]: Start isEmpty. Operand 382 states and 430 transitions. [2019-05-23 11:20:05,167 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 166 [2019-05-23 11:20:05,167 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:05,168 INFO L146 ILogger]: trace histogram [25, 25, 25, 24, 24, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:05,168 INFO L146 ILogger]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:05,168 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:05,168 INFO L146 ILogger]: Analyzing trace with hash 189949472, now seen corresponding path program 11 times [2019-05-23 11:20:05,168 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:05,168 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:05,169 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:05,169 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:05,169 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:05,181 INFO L146 ILogger]: Conjunction of SSA is unsat