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_compareModified_true-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:16:48,904 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:16:48,907 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:16:48,919 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:16:48,920 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:16:48,921 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:16:48,922 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:16:48,924 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:16:48,926 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:16:48,927 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:16:48,928 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:16:48,928 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:16:48,929 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:16:48,931 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:16:48,932 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:16:48,933 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:16:48,934 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:16:48,936 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:16:48,938 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:16:48,941 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:16:48,942 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:16:48,943 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:16:48,946 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:16:48,947 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:16:48,947 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:16:48,948 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:16:48,948 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:16:48,949 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:16:48,950 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:16:48,950 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:16:48,951 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:16:48,952 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:16:48,953 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:16:48,954 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:16:48,954 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:16:48,955 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:16:48,955 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:16:48,956 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:16:48,957 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:16:48,957 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:16:48,974 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:16:48,974 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:16:48,975 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:16:48,976 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:16:48,976 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:16:48,977 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:16:48,977 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:16:48,977 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:16:48,977 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:16:48,978 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:16:48,978 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:16:48,978 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:16:48,978 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:16:48,978 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:16:48,979 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:16:48,979 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:16:48,980 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:16:48,980 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:16:48,980 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:16:48,980 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:16:48,981 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:16:48,981 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:16:48,982 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:16:48,982 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:16:48,982 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:16:48,982 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:16:48,982 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:16:48,982 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:16:48,983 INFO L146 ILogger]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Command for external solver -> z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement [2019-05-23 11:16:49,038 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:16:49,056 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:16:49,061 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:16:49,063 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:16:49,064 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:16:49,064 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_compareModified_true-unreach-call_ground.i [2019-05-23 11:16:49,131 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2353b6fb3/0f5dbb9c6d614004a49a9d9d78853418/FLAG69f43fb34 [2019-05-23 11:16:49,600 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:16:49,601 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_compareModified_true-unreach-call_ground.i [2019-05-23 11:16:49,608 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2353b6fb3/0f5dbb9c6d614004a49a9d9d78853418/FLAG69f43fb34 [2019-05-23 11:16:49,943 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2353b6fb3/0f5dbb9c6d614004a49a9d9d78853418 [2019-05-23 11:16:49,953 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:16:49,955 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:16:49,956 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:16:49,956 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:16:49,960 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:16:49,961 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:16:49" (1/1) ... [2019-05-23 11:16:49,964 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@221c22ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:49, skipping insertion in model container [2019-05-23 11:16:49,965 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:16:49" (1/1) ... [2019-05-23 11:16:49,973 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:16:49,997 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:16:50,265 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:16:50,269 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:16:50,297 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:16:50,323 INFO L146 ILogger]: Completed translation [2019-05-23 11:16:50,324 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:50 WrapperNode [2019-05-23 11:16:50,324 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:16:50,325 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:16:50,326 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:16:50,326 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:16:50,336 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:50" (1/1) ... [2019-05-23 11:16:50,347 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:50" (1/1) ... [2019-05-23 11:16:50,379 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:16:50,380 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:16:50,380 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:16:50,381 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:16:50,392 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:50" (1/1) ... [2019-05-23 11:16:50,393 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:50" (1/1) ... [2019-05-23 11:16:50,395 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:50" (1/1) ... [2019-05-23 11:16:50,395 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:50" (1/1) ... [2019-05-23 11:16:50,407 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:50" (1/1) ... [2019-05-23 11:16:50,504 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:50" (1/1) ... [2019-05-23 11:16:50,506 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:50" (1/1) ... [2019-05-23 11:16:50,508 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:16:50,509 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:16:50,509 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:16:50,509 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:16:50,510 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 [2019-05-23 11:16:50,572 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:16:50,572 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:16:50,572 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:16:50,572 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:16:50,572 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:16:50,573 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:16:51,078 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:16:51,079 INFO L146 ILogger]: Removed 11 assume(true) statements. [2019-05-23 11:16:51,080 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:16:51 BoogieIcfgContainer [2019-05-23 11:16:51,081 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:16:51,081 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:16:51,082 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:16:51,085 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:16:51,085 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:16:49" (1/3) ... [2019-05-23 11:16:51,086 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66766d22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:16:51, skipping insertion in model container [2019-05-23 11:16:51,086 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:50" (2/3) ... [2019-05-23 11:16:51,087 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66766d22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:16:51, skipping insertion in model container [2019-05-23 11:16:51,087 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:16:51" (3/3) ... [2019-05-23 11:16:51,089 INFO L146 ILogger]: Analyzing ICFG standard_compareModified_true-unreach-call_ground.i [2019-05-23 11:16:51,099 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:16:51,107 INFO L146 ILogger]: Appying trace abstraction to program that has 2 error locations. [2019-05-23 11:16:51,124 INFO L146 ILogger]: Starting to check reachability of 2 error locations. [2019-05-23 11:16:51,155 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:16:51,155 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:16:51,156 INFO L146 ILogger]: Hoare is true [2019-05-23 11:16:51,156 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:16:51,156 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:16:51,156 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:16:51,156 INFO L146 ILogger]: Difference is false [2019-05-23 11:16:51,157 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:16:51,157 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:16:51,174 INFO L146 ILogger]: Start isEmpty. Operand 64 states. [2019-05-23 11:16:51,181 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 22 [2019-05-23 11:16:51,182 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:51,182 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:51,184 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:51,189 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:51,189 INFO L146 ILogger]: Analyzing trace with hash -1605067103, now seen corresponding path program 1 times [2019-05-23 11:16:51,191 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:51,191 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:51,243 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:51,244 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:51,244 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:51,294 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:51,356 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:51,358 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:16:51,359 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:16:51,361 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:16:51,370 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:16:51,371 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:16:51,373 INFO L146 ILogger]: Start difference. First operand 64 states. Second operand 3 states. [2019-05-23 11:16:51,449 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:51,450 INFO L146 ILogger]: Finished difference Result 119 states and 137 transitions. [2019-05-23 11:16:51,450 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:16:51,451 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 21 [2019-05-23 11:16:51,452 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:51,460 INFO L146 ILogger]: With dead ends: 119 [2019-05-23 11:16:51,460 INFO L146 ILogger]: Without dead ends: 67 [2019-05-23 11:16:51,464 INFO L146 ILogger]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:16:51,479 INFO L146 ILogger]: Start minimizeSevpa. Operand 67 states. [2019-05-23 11:16:51,496 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 67 to 55. [2019-05-23 11:16:51,497 INFO L146 ILogger]: Start removeUnreachable. Operand 55 states. [2019-05-23 11:16:51,499 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2019-05-23 11:16:51,500 INFO L146 ILogger]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 21 [2019-05-23 11:16:51,500 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:51,500 INFO L146 ILogger]: Abstraction has 55 states and 59 transitions. [2019-05-23 11:16:51,501 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:16:51,501 INFO L146 ILogger]: Start isEmpty. Operand 55 states and 59 transitions. [2019-05-23 11:16:51,502 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 32 [2019-05-23 11:16:51,502 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:51,502 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:51,503 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:51,503 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:51,503 INFO L146 ILogger]: Analyzing trace with hash 366337165, now seen corresponding path program 1 times [2019-05-23 11:16:51,503 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:51,504 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:51,505 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:51,505 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:51,505 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:51,545 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:51,627 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:51,628 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:51,628 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:16:51,643 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:51,696 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:51,698 INFO L146 ILogger]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:16:51,704 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:51,788 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:51,824 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:51,824 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-05-23 11:16:51,825 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:16:51,826 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:16:51,826 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:16:51,827 INFO L146 ILogger]: Start difference. First operand 55 states and 59 transitions. Second operand 5 states. [2019-05-23 11:16:52,045 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:52,045 INFO L146 ILogger]: Finished difference Result 112 states and 121 transitions. [2019-05-23 11:16:52,047 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:16:52,047 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 31 [2019-05-23 11:16:52,048 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:52,049 INFO L146 ILogger]: With dead ends: 112 [2019-05-23 11:16:52,049 INFO L146 ILogger]: Without dead ends: 80 [2019-05-23 11:16:52,051 INFO L146 ILogger]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:16:52,052 INFO L146 ILogger]: Start minimizeSevpa. Operand 80 states. [2019-05-23 11:16:52,064 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 80 to 68. [2019-05-23 11:16:52,064 INFO L146 ILogger]: Start removeUnreachable. Operand 68 states. [2019-05-23 11:16:52,067 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 68 states to 68 states and 73 transitions. [2019-05-23 11:16:52,068 INFO L146 ILogger]: Start accepts. Automaton has 68 states and 73 transitions. Word has length 31 [2019-05-23 11:16:52,068 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:52,068 INFO L146 ILogger]: Abstraction has 68 states and 73 transitions. [2019-05-23 11:16:52,068 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:16:52,069 INFO L146 ILogger]: Start isEmpty. Operand 68 states and 73 transitions. [2019-05-23 11:16:52,070 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 42 [2019-05-23 11:16:52,070 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:52,070 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:52,071 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:52,073 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:52,073 INFO L146 ILogger]: Analyzing trace with hash 528720761, now seen corresponding path program 2 times [2019-05-23 11:16:52,073 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:52,073 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:52,075 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:52,075 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:52,076 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:52,121 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:52,291 INFO L146 ILogger]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:52,292 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:52,292 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:16:52,304 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:16:52,349 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:16:52,350 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:52,352 INFO L146 ILogger]: Trace formula consists of 85 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:16:52,357 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:52,420 INFO L146 ILogger]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:52,445 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:52,445 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-05-23 11:16:52,446 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:16:52,446 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:16:52,447 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:16:52,447 INFO L146 ILogger]: Start difference. First operand 68 states and 73 transitions. Second operand 6 states. [2019-05-23 11:16:52,670 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:52,670 INFO L146 ILogger]: Finished difference Result 125 states and 135 transitions. [2019-05-23 11:16:52,672 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:16:52,672 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 41 [2019-05-23 11:16:52,673 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:52,674 INFO L146 ILogger]: With dead ends: 125 [2019-05-23 11:16:52,674 INFO L146 ILogger]: Without dead ends: 93 [2019-05-23 11:16:52,675 INFO L146 ILogger]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:16:52,675 INFO L146 ILogger]: Start minimizeSevpa. Operand 93 states. [2019-05-23 11:16:52,684 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 93 to 81. [2019-05-23 11:16:52,684 INFO L146 ILogger]: Start removeUnreachable. Operand 81 states. [2019-05-23 11:16:52,687 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2019-05-23 11:16:52,687 INFO L146 ILogger]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 41 [2019-05-23 11:16:52,688 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:52,688 INFO L146 ILogger]: Abstraction has 81 states and 87 transitions. [2019-05-23 11:16:52,688 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:16:52,688 INFO L146 ILogger]: Start isEmpty. Operand 81 states and 87 transitions. [2019-05-23 11:16:52,690 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 52 [2019-05-23 11:16:52,690 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:52,690 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:52,691 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:52,691 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:52,691 INFO L146 ILogger]: Analyzing trace with hash -637095067, now seen corresponding path program 3 times [2019-05-23 11:16:52,691 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:52,691 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:52,692 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:52,692 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:52,693 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:52,712 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:52,849 INFO L146 ILogger]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:52,849 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:52,849 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:16:52,871 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:16:52,911 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:16:52,911 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:52,912 INFO L146 ILogger]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:16:52,915 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:52,944 INFO L146 ILogger]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:52,968 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:52,968 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-05-23 11:16:52,969 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:16:52,969 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:16:52,969 INFO L146 ILogger]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:16:52,969 INFO L146 ILogger]: Start difference. First operand 81 states and 87 transitions. Second operand 7 states. [2019-05-23 11:16:53,110 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:53,110 INFO L146 ILogger]: Finished difference Result 138 states and 149 transitions. [2019-05-23 11:16:53,114 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:16:53,114 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 51 [2019-05-23 11:16:53,115 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:53,116 INFO L146 ILogger]: With dead ends: 138 [2019-05-23 11:16:53,116 INFO L146 ILogger]: Without dead ends: 106 [2019-05-23 11:16:53,119 INFO L146 ILogger]: 0 DeclaredPredicates, 56 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:16:53,120 INFO L146 ILogger]: Start minimizeSevpa. Operand 106 states. [2019-05-23 11:16:53,132 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 106 to 94. [2019-05-23 11:16:53,133 INFO L146 ILogger]: Start removeUnreachable. Operand 94 states. [2019-05-23 11:16:53,138 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 94 states to 94 states and 101 transitions. [2019-05-23 11:16:53,139 INFO L146 ILogger]: Start accepts. Automaton has 94 states and 101 transitions. Word has length 51 [2019-05-23 11:16:53,139 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:53,139 INFO L146 ILogger]: Abstraction has 94 states and 101 transitions. [2019-05-23 11:16:53,140 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:16:53,140 INFO L146 ILogger]: Start isEmpty. Operand 94 states and 101 transitions. [2019-05-23 11:16:53,146 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 62 [2019-05-23 11:16:53,146 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:53,146 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:53,146 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:53,147 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:53,147 INFO L146 ILogger]: Analyzing trace with hash 907529297, now seen corresponding path program 4 times [2019-05-23 11:16:53,147 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:53,147 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:53,150 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:53,150 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:53,151 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:53,187 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:53,642 INFO L146 ILogger]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:53,643 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:53,643 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:16:53,662 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:16:53,716 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:16:53,716 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:53,718 INFO L146 ILogger]: Trace formula consists of 115 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:16:53,720 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:53,739 INFO L146 ILogger]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:53,757 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:53,758 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-05-23 11:16:53,758 INFO L146 ILogger]: Interpolant automaton has 8 states [2019-05-23 11:16:53,759 INFO L146 ILogger]: Constructing interpolant automaton starting with 8 interpolants. [2019-05-23 11:16:53,759 INFO L146 ILogger]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:16:53,759 INFO L146 ILogger]: Start difference. First operand 94 states and 101 transitions. Second operand 8 states. [2019-05-23 11:16:54,118 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:54,118 INFO L146 ILogger]: Finished difference Result 151 states and 163 transitions. [2019-05-23 11:16:54,119 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:16:54,119 INFO L146 ILogger]: Start accepts. Automaton has 8 states. Word has length 61 [2019-05-23 11:16:54,120 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:54,122 INFO L146 ILogger]: With dead ends: 151 [2019-05-23 11:16:54,122 INFO L146 ILogger]: Without dead ends: 119 [2019-05-23 11:16:54,123 INFO L146 ILogger]: 0 DeclaredPredicates, 67 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:16:54,123 INFO L146 ILogger]: Start minimizeSevpa. Operand 119 states. [2019-05-23 11:16:54,129 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 119 to 107. [2019-05-23 11:16:54,130 INFO L146 ILogger]: Start removeUnreachable. Operand 107 states. [2019-05-23 11:16:54,130 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 107 states to 107 states and 115 transitions. [2019-05-23 11:16:54,131 INFO L146 ILogger]: Start accepts. Automaton has 107 states and 115 transitions. Word has length 61 [2019-05-23 11:16:54,131 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:54,131 INFO L146 ILogger]: Abstraction has 107 states and 115 transitions. [2019-05-23 11:16:54,131 INFO L146 ILogger]: Interpolant automaton has 8 states. [2019-05-23 11:16:54,132 INFO L146 ILogger]: Start isEmpty. Operand 107 states and 115 transitions. [2019-05-23 11:16:54,134 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 72 [2019-05-23 11:16:54,134 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:54,134 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:54,134 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:54,134 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:54,135 INFO L146 ILogger]: Analyzing trace with hash 612347453, now seen corresponding path program 5 times [2019-05-23 11:16:54,135 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:54,135 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:54,136 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:54,136 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:54,136 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:54,152 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:54,316 INFO L146 ILogger]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:54,316 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:54,316 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:16:54,331 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:16:54,431 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-05-23 11:16:54,431 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:54,433 INFO L146 ILogger]: Trace formula consists of 130 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:16:54,445 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:54,577 INFO L146 ILogger]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:54,627 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:54,627 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2019-05-23 11:16:54,628 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:16:54,628 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:16:54,628 INFO L146 ILogger]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:16:54,629 INFO L146 ILogger]: Start difference. First operand 107 states and 115 transitions. Second operand 9 states. [2019-05-23 11:16:55,149 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:55,150 INFO L146 ILogger]: Finished difference Result 164 states and 177 transitions. [2019-05-23 11:16:55,151 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:16:55,151 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 71 [2019-05-23 11:16:55,152 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:55,153 INFO L146 ILogger]: With dead ends: 164 [2019-05-23 11:16:55,153 INFO L146 ILogger]: Without dead ends: 132 [2019-05-23 11:16:55,154 INFO L146 ILogger]: 0 DeclaredPredicates, 78 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:16:55,155 INFO L146 ILogger]: Start minimizeSevpa. Operand 132 states. [2019-05-23 11:16:55,162 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 132 to 120. [2019-05-23 11:16:55,162 INFO L146 ILogger]: Start removeUnreachable. Operand 120 states. [2019-05-23 11:16:55,163 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 120 states to 120 states and 129 transitions. [2019-05-23 11:16:55,163 INFO L146 ILogger]: Start accepts. Automaton has 120 states and 129 transitions. Word has length 71 [2019-05-23 11:16:55,164 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:55,164 INFO L146 ILogger]: Abstraction has 120 states and 129 transitions. [2019-05-23 11:16:55,164 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:16:55,164 INFO L146 ILogger]: Start isEmpty. Operand 120 states and 129 transitions. [2019-05-23 11:16:55,166 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 82 [2019-05-23 11:16:55,166 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:55,167 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:55,167 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:55,167 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:55,167 INFO L146 ILogger]: Analyzing trace with hash -1038673623, now seen corresponding path program 6 times [2019-05-23 11:16:55,168 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:55,168 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:55,169 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:55,169 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:55,169 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:55,186 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:55,387 INFO L146 ILogger]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:55,387 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:55,388 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:16:55,398 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:16:55,467 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-05-23 11:16:55,468 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:55,471 INFO L146 ILogger]: Trace formula consists of 145 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:16:55,478 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:55,513 INFO L146 ILogger]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:55,531 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:55,532 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2019-05-23 11:16:55,532 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:16:55,532 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:16:55,533 INFO L146 ILogger]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:16:55,533 INFO L146 ILogger]: Start difference. First operand 120 states and 129 transitions. Second operand 10 states. [2019-05-23 11:16:55,693 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:55,693 INFO L146 ILogger]: Finished difference Result 177 states and 191 transitions. [2019-05-23 11:16:55,694 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-05-23 11:16:55,694 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 81 [2019-05-23 11:16:55,695 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:55,696 INFO L146 ILogger]: With dead ends: 177 [2019-05-23 11:16:55,696 INFO L146 ILogger]: Without dead ends: 145 [2019-05-23 11:16:55,696 INFO L146 ILogger]: 0 DeclaredPredicates, 89 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:16:55,697 INFO L146 ILogger]: Start minimizeSevpa. Operand 145 states. [2019-05-23 11:16:55,703 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 145 to 133. [2019-05-23 11:16:55,703 INFO L146 ILogger]: Start removeUnreachable. Operand 133 states. [2019-05-23 11:16:55,704 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 133 states to 133 states and 143 transitions. [2019-05-23 11:16:55,704 INFO L146 ILogger]: Start accepts. Automaton has 133 states and 143 transitions. Word has length 81 [2019-05-23 11:16:55,704 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:55,704 INFO L146 ILogger]: Abstraction has 133 states and 143 transitions. [2019-05-23 11:16:55,704 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:16:55,705 INFO L146 ILogger]: Start isEmpty. Operand 133 states and 143 transitions. [2019-05-23 11:16:55,706 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 92 [2019-05-23 11:16:55,706 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:55,706 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:55,707 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:55,707 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:55,707 INFO L146 ILogger]: Analyzing trace with hash -2084123371, now seen corresponding path program 7 times [2019-05-23 11:16:55,707 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:55,707 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:55,708 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:55,708 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:55,708 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:55,723 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:56,050 INFO L146 ILogger]: Checked inductivity of 217 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:56,051 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:56,051 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:16:56,063 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:56,087 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:56,088 INFO L146 ILogger]: Trace formula consists of 160 conjuncts, 9 conjunts are in the unsatisfiable core [2019-05-23 11:16:56,091 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:56,118 INFO L146 ILogger]: Checked inductivity of 217 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:56,137 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:56,137 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2019-05-23 11:16:56,138 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:16:56,138 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:16:56,138 INFO L146 ILogger]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:16:56,139 INFO L146 ILogger]: Start difference. First operand 133 states and 143 transitions. Second operand 11 states. [2019-05-23 11:16:56,365 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:56,366 INFO L146 ILogger]: Finished difference Result 190 states and 205 transitions. [2019-05-23 11:16:56,366 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-05-23 11:16:56,366 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 91 [2019-05-23 11:16:56,367 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:56,368 INFO L146 ILogger]: With dead ends: 190 [2019-05-23 11:16:56,369 INFO L146 ILogger]: Without dead ends: 158 [2019-05-23 11:16:56,370 INFO L146 ILogger]: 0 DeclaredPredicates, 100 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:16:56,370 INFO L146 ILogger]: Start minimizeSevpa. Operand 158 states. [2019-05-23 11:16:56,375 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 158 to 146. [2019-05-23 11:16:56,376 INFO L146 ILogger]: Start removeUnreachable. Operand 146 states. [2019-05-23 11:16:56,376 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 146 states to 146 states and 157 transitions. [2019-05-23 11:16:56,377 INFO L146 ILogger]: Start accepts. Automaton has 146 states and 157 transitions. Word has length 91 [2019-05-23 11:16:56,377 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:56,377 INFO L146 ILogger]: Abstraction has 146 states and 157 transitions. [2019-05-23 11:16:56,377 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:16:56,377 INFO L146 ILogger]: Start isEmpty. Operand 146 states and 157 transitions. [2019-05-23 11:16:56,379 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 102 [2019-05-23 11:16:56,379 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:56,379 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:56,380 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:56,380 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:56,380 INFO L146 ILogger]: Analyzing trace with hash 1653049857, now seen corresponding path program 8 times [2019-05-23 11:16:56,380 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:56,380 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:56,381 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:56,381 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:56,382 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:56,396 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:56,530 INFO L146 ILogger]: Checked inductivity of 288 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:56,530 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:56,530 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:16:56,543 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:16:56,591 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:16:56,591 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:56,592 INFO L146 ILogger]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:16:56,595 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:56,638 INFO L146 ILogger]: Checked inductivity of 288 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:56,657 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:56,657 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-05-23 11:16:56,658 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:16:56,658 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:16:56,658 INFO L146 ILogger]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:16:56,659 INFO L146 ILogger]: Start difference. First operand 146 states and 157 transitions. Second operand 12 states. [2019-05-23 11:16:56,776 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:56,777 INFO L146 ILogger]: Finished difference Result 203 states and 219 transitions. [2019-05-23 11:16:56,777 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 11:16:56,778 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 101 [2019-05-23 11:16:56,778 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:56,780 INFO L146 ILogger]: With dead ends: 203 [2019-05-23 11:16:56,780 INFO L146 ILogger]: Without dead ends: 171 [2019-05-23 11:16:56,781 INFO L146 ILogger]: 0 DeclaredPredicates, 111 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:16:56,781 INFO L146 ILogger]: Start minimizeSevpa. Operand 171 states. [2019-05-23 11:16:56,786 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 171 to 159. [2019-05-23 11:16:56,786 INFO L146 ILogger]: Start removeUnreachable. Operand 159 states. [2019-05-23 11:16:56,787 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 159 states to 159 states and 171 transitions. [2019-05-23 11:16:56,787 INFO L146 ILogger]: Start accepts. Automaton has 159 states and 171 transitions. Word has length 101 [2019-05-23 11:16:56,788 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:56,788 INFO L146 ILogger]: Abstraction has 159 states and 171 transitions. [2019-05-23 11:16:56,788 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:16:56,788 INFO L146 ILogger]: Start isEmpty. Operand 159 states and 171 transitions. [2019-05-23 11:16:56,789 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 112 [2019-05-23 11:16:56,790 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:56,790 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:56,790 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:56,790 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:56,791 INFO L146 ILogger]: Analyzing trace with hash 123867117, now seen corresponding path program 9 times [2019-05-23 11:16:56,791 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:56,791 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:56,792 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:56,792 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:56,792 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:56,806 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:57,037 INFO L146 ILogger]: Checked inductivity of 369 backedges. 0 proven. 369 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:57,037 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:57,037 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:16:57,047 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:16:57,129 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-05-23 11:16:57,129 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:57,130 INFO L146 ILogger]: Trace formula consists of 190 conjuncts, 11 conjunts are in the unsatisfiable core [2019-05-23 11:16:57,132 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:57,164 INFO L146 ILogger]: Checked inductivity of 369 backedges. 0 proven. 369 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:57,182 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:57,182 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2019-05-23 11:16:57,183 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:16:57,183 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:16:57,183 INFO L146 ILogger]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:16:57,184 INFO L146 ILogger]: Start difference. First operand 159 states and 171 transitions. Second operand 13 states. [2019-05-23 11:16:57,322 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:57,322 INFO L146 ILogger]: Finished difference Result 216 states and 233 transitions. [2019-05-23 11:16:57,323 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:16:57,323 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 111 [2019-05-23 11:16:57,324 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:57,325 INFO L146 ILogger]: With dead ends: 216 [2019-05-23 11:16:57,325 INFO L146 ILogger]: Without dead ends: 184 [2019-05-23 11:16:57,326 INFO L146 ILogger]: 0 DeclaredPredicates, 122 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:16:57,326 INFO L146 ILogger]: Start minimizeSevpa. Operand 184 states. [2019-05-23 11:16:57,329 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 184 to 172. [2019-05-23 11:16:57,329 INFO L146 ILogger]: Start removeUnreachable. Operand 172 states. [2019-05-23 11:16:57,330 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 172 states to 172 states and 185 transitions. [2019-05-23 11:16:57,330 INFO L146 ILogger]: Start accepts. Automaton has 172 states and 185 transitions. Word has length 111 [2019-05-23 11:16:57,330 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:57,331 INFO L146 ILogger]: Abstraction has 172 states and 185 transitions. [2019-05-23 11:16:57,331 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:16:57,331 INFO L146 ILogger]: Start isEmpty. Operand 172 states and 185 transitions. [2019-05-23 11:16:57,334 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 122 [2019-05-23 11:16:57,334 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:57,334 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:57,334 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:57,335 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:57,335 INFO L146 ILogger]: Analyzing trace with hash -143712551, now seen corresponding path program 10 times [2019-05-23 11:16:57,335 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:57,335 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:57,336 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:57,336 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:57,336 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:57,353 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:58,001 INFO L146 ILogger]: Checked inductivity of 460 backedges. 0 proven. 460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:58,001 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:58,001 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:16:58,011 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:16:58,156 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:16:58,157 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:58,159 INFO L146 ILogger]: Trace formula consists of 205 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:16:58,162 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:58,191 INFO L146 ILogger]: Checked inductivity of 460 backedges. 0 proven. 460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:58,210 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:58,211 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2019-05-23 11:16:58,211 INFO L146 ILogger]: Interpolant automaton has 14 states [2019-05-23 11:16:58,211 INFO L146 ILogger]: Constructing interpolant automaton starting with 14 interpolants. [2019-05-23 11:16:58,212 INFO L146 ILogger]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:16:58,212 INFO L146 ILogger]: Start difference. First operand 172 states and 185 transitions. Second operand 14 states. [2019-05-23 11:16:58,357 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:58,357 INFO L146 ILogger]: Finished difference Result 229 states and 247 transitions. [2019-05-23 11:16:58,364 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:16:58,364 INFO L146 ILogger]: Start accepts. Automaton has 14 states. Word has length 121 [2019-05-23 11:16:58,364 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:58,365 INFO L146 ILogger]: With dead ends: 229 [2019-05-23 11:16:58,365 INFO L146 ILogger]: Without dead ends: 197 [2019-05-23 11:16:58,366 INFO L146 ILogger]: 0 DeclaredPredicates, 133 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:16:58,367 INFO L146 ILogger]: Start minimizeSevpa. Operand 197 states. [2019-05-23 11:16:58,369 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 197 to 185. [2019-05-23 11:16:58,370 INFO L146 ILogger]: Start removeUnreachable. Operand 185 states. [2019-05-23 11:16:58,370 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 185 states to 185 states and 199 transitions. [2019-05-23 11:16:58,371 INFO L146 ILogger]: Start accepts. Automaton has 185 states and 199 transitions. Word has length 121 [2019-05-23 11:16:58,371 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:58,372 INFO L146 ILogger]: Abstraction has 185 states and 199 transitions. [2019-05-23 11:16:58,372 INFO L146 ILogger]: Interpolant automaton has 14 states. [2019-05-23 11:16:58,372 INFO L146 ILogger]: Start isEmpty. Operand 185 states and 199 transitions. [2019-05-23 11:16:58,373 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 132 [2019-05-23 11:16:58,373 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:58,374 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:58,374 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:58,374 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:58,374 INFO L146 ILogger]: Analyzing trace with hash -1076398395, now seen corresponding path program 11 times [2019-05-23 11:16:58,374 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:58,375 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:58,375 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:58,375 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:58,376 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:58,391 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:58,561 INFO L146 ILogger]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:58,561 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:58,561 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 11:16:58,570 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:16:58,769 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-05-23 11:16:58,769 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:58,771 INFO L146 ILogger]: Trace formula consists of 220 conjuncts, 13 conjunts are in the unsatisfiable core [2019-05-23 11:16:58,773 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:58,807 INFO L146 ILogger]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:58,826 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:58,826 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2019-05-23 11:16:58,827 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:16:58,827 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:16:58,827 INFO L146 ILogger]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:16:58,828 INFO L146 ILogger]: Start difference. First operand 185 states and 199 transitions. Second operand 15 states. [2019-05-23 11:16:59,085 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:59,086 INFO L146 ILogger]: Finished difference Result 242 states and 261 transitions. [2019-05-23 11:16:59,086 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-05-23 11:16:59,086 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 131 [2019-05-23 11:16:59,087 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:59,088 INFO L146 ILogger]: With dead ends: 242 [2019-05-23 11:16:59,088 INFO L146 ILogger]: Without dead ends: 210 [2019-05-23 11:16:59,089 INFO L146 ILogger]: 0 DeclaredPredicates, 144 GetRequests, 131 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 11:16:59,090 INFO L146 ILogger]: Start minimizeSevpa. Operand 210 states. [2019-05-23 11:16:59,093 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 210 to 198. [2019-05-23 11:16:59,093 INFO L146 ILogger]: Start removeUnreachable. Operand 198 states. [2019-05-23 11:16:59,094 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 198 states to 198 states and 213 transitions. [2019-05-23 11:16:59,094 INFO L146 ILogger]: Start accepts. Automaton has 198 states and 213 transitions. Word has length 131 [2019-05-23 11:16:59,095 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:59,095 INFO L146 ILogger]: Abstraction has 198 states and 213 transitions. [2019-05-23 11:16:59,095 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:16:59,095 INFO L146 ILogger]: Start isEmpty. Operand 198 states and 213 transitions. [2019-05-23 11:16:59,096 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 142 [2019-05-23 11:16:59,096 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:59,097 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:59,097 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:59,097 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:59,097 INFO L146 ILogger]: Analyzing trace with hash 567531441, now seen corresponding path program 12 times [2019-05-23 11:16:59,097 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:59,098 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:59,098 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:59,098 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:59,099 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:59,113 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:59,450 INFO L146 ILogger]: Checked inductivity of 672 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:59,450 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:59,450 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 11:16:59,459 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:16:59,638 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-05-23 11:16:59,638 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:59,640 INFO L146 ILogger]: Trace formula consists of 235 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:16:59,642 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:59,676 INFO L146 ILogger]: Checked inductivity of 672 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:59,697 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:59,697 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2019-05-23 11:16:59,698 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:16:59,698 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:16:59,698 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:16:59,698 INFO L146 ILogger]: Start difference. First operand 198 states and 213 transitions. Second operand 16 states. [2019-05-23 11:16:59,966 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:59,966 INFO L146 ILogger]: Finished difference Result 255 states and 275 transitions. [2019-05-23 11:16:59,967 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-05-23 11:16:59,967 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 141 [2019-05-23 11:16:59,967 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:59,971 INFO L146 ILogger]: With dead ends: 255 [2019-05-23 11:16:59,971 INFO L146 ILogger]: Without dead ends: 223 [2019-05-23 11:16:59,972 INFO L146 ILogger]: 0 DeclaredPredicates, 155 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:16:59,972 INFO L146 ILogger]: Start minimizeSevpa. Operand 223 states. [2019-05-23 11:16:59,976 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 223 to 211. [2019-05-23 11:16:59,977 INFO L146 ILogger]: Start removeUnreachable. Operand 211 states. [2019-05-23 11:16:59,977 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 211 states to 211 states and 227 transitions. [2019-05-23 11:16:59,977 INFO L146 ILogger]: Start accepts. Automaton has 211 states and 227 transitions. Word has length 141 [2019-05-23 11:16:59,978 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:59,978 INFO L146 ILogger]: Abstraction has 211 states and 227 transitions. [2019-05-23 11:16:59,978 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:16:59,978 INFO L146 ILogger]: Start isEmpty. Operand 211 states and 227 transitions. [2019-05-23 11:16:59,979 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 152 [2019-05-23 11:16:59,980 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:59,980 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:59,980 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:59,980 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:59,980 INFO L146 ILogger]: Analyzing trace with hash 1051525533, now seen corresponding path program 13 times [2019-05-23 11:16:59,981 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:59,981 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:59,981 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:59,982 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:59,982 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:59,998 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:00,946 INFO L146 ILogger]: Checked inductivity of 793 backedges. 0 proven. 793 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:17:00,946 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:00,947 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:00,957 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:01,005 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:01,006 INFO L146 ILogger]: Trace formula consists of 250 conjuncts, 15 conjunts are in the unsatisfiable core [2019-05-23 11:17:01,009 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:01,067 INFO L146 ILogger]: Checked inductivity of 793 backedges. 0 proven. 793 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:17:01,099 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:01,099 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2019-05-23 11:17:01,100 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:17:01,100 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:17:01,100 INFO L146 ILogger]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:17:01,101 INFO L146 ILogger]: Start difference. First operand 211 states and 227 transitions. Second operand 17 states. [2019-05-23 11:17:01,520 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:01,520 INFO L146 ILogger]: Finished difference Result 268 states and 289 transitions. [2019-05-23 11:17:01,520 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-05-23 11:17:01,521 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 151 [2019-05-23 11:17:01,521 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:01,522 INFO L146 ILogger]: With dead ends: 268 [2019-05-23 11:17:01,522 INFO L146 ILogger]: Without dead ends: 236 [2019-05-23 11:17:01,523 INFO L146 ILogger]: 0 DeclaredPredicates, 166 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:17:01,524 INFO L146 ILogger]: Start minimizeSevpa. Operand 236 states. [2019-05-23 11:17:01,527 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 236 to 224. [2019-05-23 11:17:01,527 INFO L146 ILogger]: Start removeUnreachable. Operand 224 states. [2019-05-23 11:17:01,528 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 224 states to 224 states and 241 transitions. [2019-05-23 11:17:01,528 INFO L146 ILogger]: Start accepts. Automaton has 224 states and 241 transitions. Word has length 151 [2019-05-23 11:17:01,528 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:01,529 INFO L146 ILogger]: Abstraction has 224 states and 241 transitions. [2019-05-23 11:17:01,529 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:17:01,529 INFO L146 ILogger]: Start isEmpty. Operand 224 states and 241 transitions. [2019-05-23 11:17:01,530 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 162 [2019-05-23 11:17:01,530 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:01,530 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:01,531 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:01,531 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:01,531 INFO L146 ILogger]: Analyzing trace with hash -1011108727, now seen corresponding path program 14 times [2019-05-23 11:17:01,531 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:01,531 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:01,532 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:01,532 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:01,532 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:01,546 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:01,819 INFO L146 ILogger]: Checked inductivity of 924 backedges. 0 proven. 924 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:17:01,819 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:01,819 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:01,830 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:17:01,871 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:17:01,871 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:01,872 INFO L146 ILogger]: Trace formula consists of 265 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:17:01,875 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:02,000 INFO L146 ILogger]: Checked inductivity of 924 backedges. 0 proven. 924 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:17:02,023 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:02,023 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2019-05-23 11:17:02,024 INFO L146 ILogger]: Interpolant automaton has 18 states [2019-05-23 11:17:02,024 INFO L146 ILogger]: Constructing interpolant automaton starting with 18 interpolants. [2019-05-23 11:17:02,024 INFO L146 ILogger]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-05-23 11:17:02,024 INFO L146 ILogger]: Start difference. First operand 224 states and 241 transitions. Second operand 18 states. [2019-05-23 11:17:02,300 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:02,300 INFO L146 ILogger]: Finished difference Result 281 states and 303 transitions. [2019-05-23 11:17:02,300 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-05-23 11:17:02,301 INFO L146 ILogger]: Start accepts. Automaton has 18 states. Word has length 161 [2019-05-23 11:17:02,301 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:02,302 INFO L146 ILogger]: With dead ends: 281 [2019-05-23 11:17:02,302 INFO L146 ILogger]: Without dead ends: 249 [2019-05-23 11:17:02,302 INFO L146 ILogger]: 0 DeclaredPredicates, 177 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-05-23 11:17:02,303 INFO L146 ILogger]: Start minimizeSevpa. Operand 249 states. [2019-05-23 11:17:02,307 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 249 to 237. [2019-05-23 11:17:02,307 INFO L146 ILogger]: Start removeUnreachable. Operand 237 states. [2019-05-23 11:17:02,308 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 237 states to 237 states and 255 transitions. [2019-05-23 11:17:02,309 INFO L146 ILogger]: Start accepts. Automaton has 237 states and 255 transitions. Word has length 161 [2019-05-23 11:17:02,309 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:02,309 INFO L146 ILogger]: Abstraction has 237 states and 255 transitions. [2019-05-23 11:17:02,309 INFO L146 ILogger]: Interpolant automaton has 18 states. [2019-05-23 11:17:02,309 INFO L146 ILogger]: Start isEmpty. Operand 237 states and 255 transitions. [2019-05-23 11:17:02,310 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 172 [2019-05-23 11:17:02,310 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:02,310 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:02,311 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:02,311 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:02,311 INFO L146 ILogger]: Analyzing trace with hash 375959669, now seen corresponding path program 15 times [2019-05-23 11:17:02,311 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:02,311 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:02,312 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:02,312 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:02,312 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:02,326 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:02,626 INFO L146 ILogger]: Checked inductivity of 1065 backedges. 0 proven. 1065 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:17:02,626 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:02,626 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:02,638 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:17:02,822 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2019-05-23 11:17:02,822 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:02,827 INFO L146 ILogger]: Trace formula consists of 280 conjuncts, 17 conjunts are in the unsatisfiable core [2019-05-23 11:17:02,829 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:02,881 INFO L146 ILogger]: Checked inductivity of 1065 backedges. 0 proven. 1065 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:17:02,900 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:02,900 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2019-05-23 11:17:02,900 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:17:02,901 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:17:02,901 INFO L146 ILogger]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:17:02,901 INFO L146 ILogger]: Start difference. First operand 237 states and 255 transitions. Second operand 19 states. [2019-05-23 11:17:03,118 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:03,118 INFO L146 ILogger]: Finished difference Result 294 states and 317 transitions. [2019-05-23 11:17:03,118 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:17:03,118 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 171 [2019-05-23 11:17:03,119 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:03,121 INFO L146 ILogger]: With dead ends: 294 [2019-05-23 11:17:03,121 INFO L146 ILogger]: Without dead ends: 262 [2019-05-23 11:17:03,122 INFO L146 ILogger]: 0 DeclaredPredicates, 188 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:17:03,122 INFO L146 ILogger]: Start minimizeSevpa. Operand 262 states. [2019-05-23 11:17:03,125 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 262 to 250. [2019-05-23 11:17:03,125 INFO L146 ILogger]: Start removeUnreachable. Operand 250 states. [2019-05-23 11:17:03,126 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 250 states to 250 states and 269 transitions. [2019-05-23 11:17:03,126 INFO L146 ILogger]: Start accepts. Automaton has 250 states and 269 transitions. Word has length 171 [2019-05-23 11:17:03,127 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:03,127 INFO L146 ILogger]: Abstraction has 250 states and 269 transitions. [2019-05-23 11:17:03,127 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:17:03,127 INFO L146 ILogger]: Start isEmpty. Operand 250 states and 269 transitions. [2019-05-23 11:17:03,128 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 182 [2019-05-23 11:17:03,128 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:03,128 INFO L146 ILogger]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:03,129 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:03,129 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:03,129 INFO L146 ILogger]: Analyzing trace with hash -2144553631, now seen corresponding path program 16 times [2019-05-23 11:17:03,129 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:03,129 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:03,130 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:03,130 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:03,130 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:03,144 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:03,480 INFO L146 ILogger]: Checked inductivity of 1216 backedges. 0 proven. 1216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:17:03,480 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:03,480 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:03,490 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:17:03,961 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:17:03,962 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:03,964 INFO L146 ILogger]: Trace formula consists of 295 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:17:03,966 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:04,030 INFO L146 ILogger]: Checked inductivity of 1216 backedges. 0 proven. 1216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:17:04,049 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:04,050 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2019-05-23 11:17:04,050 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:17:04,050 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:17:04,051 INFO L146 ILogger]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:17:04,051 INFO L146 ILogger]: Start difference. First operand 250 states and 269 transitions. Second operand 20 states. [2019-05-23 11:17:04,805 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:04,806 INFO L146 ILogger]: Finished difference Result 307 states and 331 transitions. [2019-05-23 11:17:04,806 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-05-23 11:17:04,806 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 181 [2019-05-23 11:17:04,807 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:04,808 INFO L146 ILogger]: With dead ends: 307 [2019-05-23 11:17:04,808 INFO L146 ILogger]: Without dead ends: 275 [2019-05-23 11:17:04,808 INFO L146 ILogger]: 0 DeclaredPredicates, 199 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:17:04,809 INFO L146 ILogger]: Start minimizeSevpa. Operand 275 states. [2019-05-23 11:17:04,813 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 275 to 263. [2019-05-23 11:17:04,813 INFO L146 ILogger]: Start removeUnreachable. Operand 263 states. [2019-05-23 11:17:04,814 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 263 states to 263 states and 283 transitions. [2019-05-23 11:17:04,814 INFO L146 ILogger]: Start accepts. Automaton has 263 states and 283 transitions. Word has length 181 [2019-05-23 11:17:04,814 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:04,814 INFO L146 ILogger]: Abstraction has 263 states and 283 transitions. [2019-05-23 11:17:04,815 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:17:04,815 INFO L146 ILogger]: Start isEmpty. Operand 263 states and 283 transitions. [2019-05-23 11:17:04,816 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 192 [2019-05-23 11:17:04,816 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:04,816 INFO L146 ILogger]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:04,816 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:04,817 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:04,817 INFO L146 ILogger]: Analyzing trace with hash 1519420237, now seen corresponding path program 17 times [2019-05-23 11:17:04,817 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:04,817 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:04,818 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:04,818 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:04,818 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:04,833 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:05,144 INFO L146 ILogger]: Checked inductivity of 1377 backedges. 0 proven. 1377 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:17:05,145 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:05,145 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:05,153 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:17:05,348 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2019-05-23 11:17:05,348 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:05,351 INFO L146 ILogger]: Trace formula consists of 310 conjuncts, 19 conjunts are in the unsatisfiable core [2019-05-23 11:17:05,355 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:05,395 INFO L146 ILogger]: Checked inductivity of 1377 backedges. 0 proven. 1377 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:17:05,415 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:05,415 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2019-05-23 11:17:05,416 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:17:05,416 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:17:05,416 INFO L146 ILogger]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:17:05,416 INFO L146 ILogger]: Start difference. First operand 263 states and 283 transitions. Second operand 21 states. [2019-05-23 11:17:05,606 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:05,606 INFO L146 ILogger]: Finished difference Result 320 states and 345 transitions. [2019-05-23 11:17:05,607 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-05-23 11:17:05,607 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 191 [2019-05-23 11:17:05,608 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:05,609 INFO L146 ILogger]: With dead ends: 320 [2019-05-23 11:17:05,609 INFO L146 ILogger]: Without dead ends: 288 [2019-05-23 11:17:05,609 INFO L146 ILogger]: 0 DeclaredPredicates, 210 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:17:05,610 INFO L146 ILogger]: Start minimizeSevpa. Operand 288 states. [2019-05-23 11:17:05,613 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 288 to 276. [2019-05-23 11:17:05,614 INFO L146 ILogger]: Start removeUnreachable. Operand 276 states. [2019-05-23 11:17:05,615 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 276 states to 276 states and 297 transitions. [2019-05-23 11:17:05,615 INFO L146 ILogger]: Start accepts. Automaton has 276 states and 297 transitions. Word has length 191 [2019-05-23 11:17:05,615 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:05,615 INFO L146 ILogger]: Abstraction has 276 states and 297 transitions. [2019-05-23 11:17:05,615 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:17:05,615 INFO L146 ILogger]: Start isEmpty. Operand 276 states and 297 transitions. [2019-05-23 11:17:05,616 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 202 [2019-05-23 11:17:05,617 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:05,617 INFO L146 ILogger]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:05,617 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:05,617 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:05,618 INFO L146 ILogger]: Analyzing trace with hash 992795193, now seen corresponding path program 18 times [2019-05-23 11:17:05,618 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:05,618 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:05,619 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:05,619 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:05,619 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:05,634 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:06,296 INFO L146 ILogger]: Checked inductivity of 1548 backedges. 0 proven. 1548 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:17:06,296 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:06,296 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:06,305 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:17:06,877 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2019-05-23 11:17:06,877 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:06,881 INFO L146 ILogger]: Trace formula consists of 325 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:17:06,884 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:06,947 INFO L146 ILogger]: Checked inductivity of 1548 backedges. 0 proven. 1548 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:17:06,977 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:06,977 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2019-05-23 11:17:06,978 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:17:06,978 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:17:06,979 INFO L146 ILogger]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:17:06,979 INFO L146 ILogger]: Start difference. First operand 276 states and 297 transitions. Second operand 22 states. [2019-05-23 11:17:07,216 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:07,216 INFO L146 ILogger]: Finished difference Result 333 states and 359 transitions. [2019-05-23 11:17:07,217 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:17:07,217 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 201 [2019-05-23 11:17:07,218 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:07,219 INFO L146 ILogger]: With dead ends: 333 [2019-05-23 11:17:07,219 INFO L146 ILogger]: Without dead ends: 301 [2019-05-23 11:17:07,220 INFO L146 ILogger]: 0 DeclaredPredicates, 221 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:17:07,221 INFO L146 ILogger]: Start minimizeSevpa. Operand 301 states. [2019-05-23 11:17:07,224 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 301 to 289. [2019-05-23 11:17:07,225 INFO L146 ILogger]: Start removeUnreachable. Operand 289 states. [2019-05-23 11:17:07,225 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 289 states to 289 states and 311 transitions. [2019-05-23 11:17:07,226 INFO L146 ILogger]: Start accepts. Automaton has 289 states and 311 transitions. Word has length 201 [2019-05-23 11:17:07,226 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:07,226 INFO L146 ILogger]: Abstraction has 289 states and 311 transitions. [2019-05-23 11:17:07,226 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:17:07,227 INFO L146 ILogger]: Start isEmpty. Operand 289 states and 311 transitions. [2019-05-23 11:17:07,228 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 212 [2019-05-23 11:17:07,228 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:07,228 INFO L146 ILogger]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:07,228 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:07,229 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:07,229 INFO L146 ILogger]: Analyzing trace with hash 531266085, now seen corresponding path program 19 times [2019-05-23 11:17:07,229 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:07,229 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:07,230 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:07,230 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:07,230 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:07,246 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:07,658 INFO L146 ILogger]: Checked inductivity of 1729 backedges. 0 proven. 1729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:17:07,658 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:07,658 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:07,667 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:07,720 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:07,721 INFO L146 ILogger]: Trace formula consists of 340 conjuncts, 21 conjunts are in the unsatisfiable core [2019-05-23 11:17:07,724 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:07,782 INFO L146 ILogger]: Checked inductivity of 1729 backedges. 0 proven. 1729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:17:07,800 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:07,801 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2019-05-23 11:17:07,801 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:17:07,801 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:17:07,802 INFO L146 ILogger]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:17:07,802 INFO L146 ILogger]: Start difference. First operand 289 states and 311 transitions. Second operand 23 states. [2019-05-23 11:17:08,077 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:08,077 INFO L146 ILogger]: Finished difference Result 346 states and 373 transitions. [2019-05-23 11:17:08,080 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-05-23 11:17:08,080 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 211 [2019-05-23 11:17:08,080 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:08,081 INFO L146 ILogger]: With dead ends: 346 [2019-05-23 11:17:08,081 INFO L146 ILogger]: Without dead ends: 314 [2019-05-23 11:17:08,084 INFO L146 ILogger]: 0 DeclaredPredicates, 232 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:17:08,084 INFO L146 ILogger]: Start minimizeSevpa. Operand 314 states. [2019-05-23 11:17:08,088 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 314 to 302. [2019-05-23 11:17:08,088 INFO L146 ILogger]: Start removeUnreachable. Operand 302 states. [2019-05-23 11:17:08,089 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 302 states to 302 states and 325 transitions. [2019-05-23 11:17:08,089 INFO L146 ILogger]: Start accepts. Automaton has 302 states and 325 transitions. Word has length 211 [2019-05-23 11:17:08,089 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:08,089 INFO L146 ILogger]: Abstraction has 302 states and 325 transitions. [2019-05-23 11:17:08,089 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:17:08,090 INFO L146 ILogger]: Start isEmpty. Operand 302 states and 325 transitions. [2019-05-23 11:17:08,091 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 222 [2019-05-23 11:17:08,091 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:08,091 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:08,091 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:08,091 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:08,092 INFO L146 ILogger]: Analyzing trace with hash -1715330287, now seen corresponding path program 20 times [2019-05-23 11:17:08,092 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:08,092 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:08,092 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:08,093 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:08,093 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:08,110 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:08,499 INFO L146 ILogger]: Checked inductivity of 1920 backedges. 0 proven. 1920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:17:08,499 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:08,499 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:08,509 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:17:08,585 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:17:08,585 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:08,587 INFO L146 ILogger]: Trace formula consists of 355 conjuncts, 22 conjunts are in the unsatisfiable core [2019-05-23 11:17:08,591 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:08,749 INFO L146 ILogger]: Checked inductivity of 1920 backedges. 0 proven. 1920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:17:08,773 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:08,773 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2019-05-23 11:17:08,773 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:17:08,774 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:17:08,774 INFO L146 ILogger]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:17:08,774 INFO L146 ILogger]: Start difference. First operand 302 states and 325 transitions. Second operand 24 states. [2019-05-23 11:17:08,992 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:08,992 INFO L146 ILogger]: Finished difference Result 359 states and 387 transitions. [2019-05-23 11:17:08,992 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-05-23 11:17:08,993 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 221 [2019-05-23 11:17:08,993 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:08,995 INFO L146 ILogger]: With dead ends: 359 [2019-05-23 11:17:08,995 INFO L146 ILogger]: Without dead ends: 327 [2019-05-23 11:17:08,996 INFO L146 ILogger]: 0 DeclaredPredicates, 243 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:17:08,997 INFO L146 ILogger]: Start minimizeSevpa. Operand 327 states. [2019-05-23 11:17:09,001 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 327 to 315. [2019-05-23 11:17:09,001 INFO L146 ILogger]: Start removeUnreachable. Operand 315 states. [2019-05-23 11:17:09,001 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 315 states to 315 states and 339 transitions. [2019-05-23 11:17:09,002 INFO L146 ILogger]: Start accepts. Automaton has 315 states and 339 transitions. Word has length 221 [2019-05-23 11:17:09,002 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:09,002 INFO L146 ILogger]: Abstraction has 315 states and 339 transitions. [2019-05-23 11:17:09,002 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:17:09,002 INFO L146 ILogger]: Start isEmpty. Operand 315 states and 339 transitions. [2019-05-23 11:17:09,004 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 232 [2019-05-23 11:17:09,004 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:09,004 INFO L146 ILogger]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:09,004 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:09,004 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:09,005 INFO L146 ILogger]: Analyzing trace with hash -79915779, now seen corresponding path program 21 times [2019-05-23 11:17:09,005 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:09,005 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:09,005 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:09,006 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:09,006 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:09,022 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:09,721 INFO L146 ILogger]: Checked inductivity of 2121 backedges. 0 proven. 2121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:17:09,721 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:09,721 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:09,730 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:17:10,356 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2019-05-23 11:17:10,357 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:10,360 INFO L146 ILogger]: Trace formula consists of 370 conjuncts, 23 conjunts are in the unsatisfiable core [2019-05-23 11:17:10,362 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:10,477 INFO L146 ILogger]: Checked inductivity of 2121 backedges. 0 proven. 2121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:17:10,496 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:10,497 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2019-05-23 11:17:10,497 INFO L146 ILogger]: Interpolant automaton has 25 states [2019-05-23 11:17:10,497 INFO L146 ILogger]: Constructing interpolant automaton starting with 25 interpolants. [2019-05-23 11:17:10,498 INFO L146 ILogger]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:17:10,498 INFO L146 ILogger]: Start difference. First operand 315 states and 339 transitions. Second operand 25 states. [2019-05-23 11:17:10,743 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:10,743 INFO L146 ILogger]: Finished difference Result 372 states and 401 transitions. [2019-05-23 11:17:10,747 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:17:10,747 INFO L146 ILogger]: Start accepts. Automaton has 25 states. Word has length 231 [2019-05-23 11:17:10,748 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:10,749 INFO L146 ILogger]: With dead ends: 372 [2019-05-23 11:17:10,749 INFO L146 ILogger]: Without dead ends: 340 [2019-05-23 11:17:10,750 INFO L146 ILogger]: 0 DeclaredPredicates, 254 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:17:10,750 INFO L146 ILogger]: Start minimizeSevpa. Operand 340 states. [2019-05-23 11:17:10,754 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 340 to 328. [2019-05-23 11:17:10,754 INFO L146 ILogger]: Start removeUnreachable. Operand 328 states. [2019-05-23 11:17:10,755 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 328 states to 328 states and 353 transitions. [2019-05-23 11:17:10,755 INFO L146 ILogger]: Start accepts. Automaton has 328 states and 353 transitions. Word has length 231 [2019-05-23 11:17:10,755 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:10,755 INFO L146 ILogger]: Abstraction has 328 states and 353 transitions. [2019-05-23 11:17:10,756 INFO L146 ILogger]: Interpolant automaton has 25 states. [2019-05-23 11:17:10,756 INFO L146 ILogger]: Start isEmpty. Operand 328 states and 353 transitions. [2019-05-23 11:17:10,757 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 242 [2019-05-23 11:17:10,757 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:10,757 INFO L146 ILogger]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:10,757 INFO L146 ILogger]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:10,758 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:10,758 INFO L146 ILogger]: Analyzing trace with hash -2114809879, now seen corresponding path program 22 times [2019-05-23 11:17:10,758 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:10,758 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:10,759 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:10,759 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:10,759 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:10,774 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:12,642 INFO L146 ILogger]: Checked inductivity of 2332 backedges. 0 proven. 2332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:17:12,642 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:12,642 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:12,651 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:17:14,364 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:17:14,364 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:14,368 INFO L146 ILogger]: Trace formula consists of 385 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:17:14,370 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:14,486 INFO L146 ILogger]: Checked inductivity of 2332 backedges. 0 proven. 2332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:17:14,506 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:14,506 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2019-05-23 11:17:14,507 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:17:14,507 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:17:14,507 INFO L146 ILogger]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:17:14,508 INFO L146 ILogger]: Start difference. First operand 328 states and 353 transitions. Second operand 26 states. [2019-05-23 11:17:14,753 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:14,753 INFO L146 ILogger]: Finished difference Result 385 states and 415 transitions. [2019-05-23 11:17:14,754 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-05-23 11:17:14,754 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 241 [2019-05-23 11:17:14,754 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:14,756 INFO L146 ILogger]: With dead ends: 385 [2019-05-23 11:17:14,756 INFO L146 ILogger]: Without dead ends: 353 [2019-05-23 11:17:14,757 INFO L146 ILogger]: 0 DeclaredPredicates, 265 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:17:14,758 INFO L146 ILogger]: Start minimizeSevpa. Operand 353 states. [2019-05-23 11:17:14,762 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 353 to 341. [2019-05-23 11:17:14,762 INFO L146 ILogger]: Start removeUnreachable. Operand 341 states. [2019-05-23 11:17:14,763 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 341 states to 341 states and 367 transitions. [2019-05-23 11:17:14,763 INFO L146 ILogger]: Start accepts. Automaton has 341 states and 367 transitions. Word has length 241 [2019-05-23 11:17:14,763 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:14,764 INFO L146 ILogger]: Abstraction has 341 states and 367 transitions. [2019-05-23 11:17:14,764 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:17:14,764 INFO L146 ILogger]: Start isEmpty. Operand 341 states and 367 transitions. [2019-05-23 11:17:14,765 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 252 [2019-05-23 11:17:14,765 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:14,765 INFO L146 ILogger]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:14,766 INFO L146 ILogger]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:14,766 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:14,766 INFO L146 ILogger]: Analyzing trace with hash -2083728427, now seen corresponding path program 23 times [2019-05-23 11:17:14,766 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:14,766 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:14,767 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:14,767 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:14,767 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:14,785 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:16,336 INFO L146 ILogger]: Checked inductivity of 2553 backedges. 0 proven. 2553 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:17:16,337 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:16,337 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:16,347 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:17:16,715 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2019-05-23 11:17:16,715 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:16,718 INFO L146 ILogger]: Trace formula consists of 400 conjuncts, 25 conjunts are in the unsatisfiable core [2019-05-23 11:17:16,720 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:16,789 INFO L146 ILogger]: Checked inductivity of 2553 backedges. 0 proven. 2553 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:17:16,809 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:16,809 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2019-05-23 11:17:16,809 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:17:16,809 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:17:16,810 INFO L146 ILogger]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:17:16,810 INFO L146 ILogger]: Start difference. First operand 341 states and 367 transitions. Second operand 27 states. [2019-05-23 11:17:17,033 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:17,034 INFO L146 ILogger]: Finished difference Result 398 states and 429 transitions. [2019-05-23 11:17:17,034 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-05-23 11:17:17,034 INFO L146 ILogger]: Start accepts. Automaton has 27 states. Word has length 251 [2019-05-23 11:17:17,035 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:17,037 INFO L146 ILogger]: With dead ends: 398 [2019-05-23 11:17:17,037 INFO L146 ILogger]: Without dead ends: 366 [2019-05-23 11:17:17,038 INFO L146 ILogger]: 0 DeclaredPredicates, 276 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:17:17,039 INFO L146 ILogger]: Start minimizeSevpa. Operand 366 states. [2019-05-23 11:17:17,041 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 366 to 354. [2019-05-23 11:17:17,042 INFO L146 ILogger]: Start removeUnreachable. Operand 354 states. [2019-05-23 11:17:17,042 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 354 states to 354 states and 381 transitions. [2019-05-23 11:17:17,043 INFO L146 ILogger]: Start accepts. Automaton has 354 states and 381 transitions. Word has length 251 [2019-05-23 11:17:17,043 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:17,043 INFO L146 ILogger]: Abstraction has 354 states and 381 transitions. [2019-05-23 11:17:17,043 INFO L146 ILogger]: Interpolant automaton has 27 states. [2019-05-23 11:17:17,043 INFO L146 ILogger]: Start isEmpty. Operand 354 states and 381 transitions. [2019-05-23 11:17:17,044 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 262 [2019-05-23 11:17:17,045 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:17,045 INFO L146 ILogger]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:17,045 INFO L146 ILogger]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:17,045 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:17,045 INFO L146 ILogger]: Analyzing trace with hash -1698422591, now seen corresponding path program 24 times [2019-05-23 11:17:17,046 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:17,046 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:17,046 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:17,046 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:17,047 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:17,064 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:18,108 INFO L146 ILogger]: Checked inductivity of 2784 backedges. 0 proven. 2784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:17:18,108 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:18,108 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:18,116 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:17:18,843 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2019-05-23 11:17:18,844 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:18,848 INFO L146 ILogger]: Trace formula consists of 415 conjuncts, 26 conjunts are in the unsatisfiable core [2019-05-23 11:17:18,851 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:19,032 INFO L146 ILogger]: Checked inductivity of 2784 backedges. 0 proven. 2784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:17:19,093 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:19,093 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2019-05-23 11:17:19,094 INFO L146 ILogger]: Interpolant automaton has 28 states [2019-05-23 11:17:19,095 INFO L146 ILogger]: Constructing interpolant automaton starting with 28 interpolants. [2019-05-23 11:17:19,095 INFO L146 ILogger]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:17:19,096 INFO L146 ILogger]: Start difference. First operand 354 states and 381 transitions. Second operand 28 states. [2019-05-23 11:17:20,197 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:20,197 INFO L146 ILogger]: Finished difference Result 411 states and 443 transitions. [2019-05-23 11:17:20,198 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:17:20,198 INFO L146 ILogger]: Start accepts. Automaton has 28 states. Word has length 261 [2019-05-23 11:17:20,198 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:20,200 INFO L146 ILogger]: With dead ends: 411 [2019-05-23 11:17:20,200 INFO L146 ILogger]: Without dead ends: 379 [2019-05-23 11:17:20,201 INFO L146 ILogger]: 0 DeclaredPredicates, 287 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:17:20,201 INFO L146 ILogger]: Start minimizeSevpa. Operand 379 states. [2019-05-23 11:17:20,205 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 379 to 367. [2019-05-23 11:17:20,206 INFO L146 ILogger]: Start removeUnreachable. Operand 367 states. [2019-05-23 11:17:20,206 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 367 states to 367 states and 395 transitions. [2019-05-23 11:17:20,206 INFO L146 ILogger]: Start accepts. Automaton has 367 states and 395 transitions. Word has length 261 [2019-05-23 11:17:20,207 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:20,207 INFO L146 ILogger]: Abstraction has 367 states and 395 transitions. [2019-05-23 11:17:20,207 INFO L146 ILogger]: Interpolant automaton has 28 states. [2019-05-23 11:17:20,207 INFO L146 ILogger]: Start isEmpty. Operand 367 states and 395 transitions. [2019-05-23 11:17:20,208 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 272 [2019-05-23 11:17:20,209 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:20,209 INFO L146 ILogger]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:20,209 INFO L146 ILogger]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:20,209 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:20,209 INFO L146 ILogger]: Analyzing trace with hash -790546771, now seen corresponding path program 25 times [2019-05-23 11:17:20,210 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:20,210 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:20,210 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:20,210 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:20,211 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:20,239 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:20,903 INFO L146 ILogger]: Checked inductivity of 3025 backedges. 0 proven. 3025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:17:20,903 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:20,903 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:20,914 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:20,987 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:20,989 INFO L146 ILogger]: Trace formula consists of 430 conjuncts, 27 conjunts are in the unsatisfiable core [2019-05-23 11:17:20,992 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:21,068 INFO L146 ILogger]: Checked inductivity of 3025 backedges. 0 proven. 3025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:17:21,087 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:21,088 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2019-05-23 11:17:21,088 INFO L146 ILogger]: Interpolant automaton has 29 states [2019-05-23 11:17:21,088 INFO L146 ILogger]: Constructing interpolant automaton starting with 29 interpolants. [2019-05-23 11:17:21,089 INFO L146 ILogger]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:17:21,089 INFO L146 ILogger]: Start difference. First operand 367 states and 395 transitions. Second operand 29 states. [2019-05-23 11:17:21,477 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:21,477 INFO L146 ILogger]: Finished difference Result 424 states and 457 transitions. [2019-05-23 11:17:21,478 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-05-23 11:17:21,478 INFO L146 ILogger]: Start accepts. Automaton has 29 states. Word has length 271 [2019-05-23 11:17:21,478 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:21,480 INFO L146 ILogger]: With dead ends: 424 [2019-05-23 11:17:21,481 INFO L146 ILogger]: Without dead ends: 392 [2019-05-23 11:17:21,481 INFO L146 ILogger]: 0 DeclaredPredicates, 298 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:17:21,482 INFO L146 ILogger]: Start minimizeSevpa. Operand 392 states. [2019-05-23 11:17:21,486 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 392 to 380. [2019-05-23 11:17:21,487 INFO L146 ILogger]: Start removeUnreachable. Operand 380 states. [2019-05-23 11:17:21,487 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 380 states to 380 states and 409 transitions. [2019-05-23 11:17:21,488 INFO L146 ILogger]: Start accepts. Automaton has 380 states and 409 transitions. Word has length 271 [2019-05-23 11:17:21,488 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:21,488 INFO L146 ILogger]: Abstraction has 380 states and 409 transitions. [2019-05-23 11:17:21,488 INFO L146 ILogger]: Interpolant automaton has 29 states. [2019-05-23 11:17:21,488 INFO L146 ILogger]: Start isEmpty. Operand 380 states and 409 transitions. [2019-05-23 11:17:21,490 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 282 [2019-05-23 11:17:21,490 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:21,490 INFO L146 ILogger]: trace histogram [26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:21,490 INFO L146 ILogger]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:21,491 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:21,491 INFO L146 ILogger]: Analyzing trace with hash -868428391, now seen corresponding path program 26 times [2019-05-23 11:17:21,491 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:21,491 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:21,492 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:21,492 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:21,492 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:21,512 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:22,270 INFO L146 ILogger]: Checked inductivity of 3276 backedges. 0 proven. 3276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:17:22,271 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:22,271 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:22,282 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:17:22,352 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:17:22,352 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:22,353 INFO L146 ILogger]: Trace formula consists of 445 conjuncts, 28 conjunts are in the unsatisfiable core [2019-05-23 11:17:22,356 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:22,446 INFO L146 ILogger]: Checked inductivity of 3276 backedges. 0 proven. 3276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:17:22,464 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:22,465 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2019-05-23 11:17:22,465 INFO L146 ILogger]: Interpolant automaton has 30 states [2019-05-23 11:17:22,465 INFO L146 ILogger]: Constructing interpolant automaton starting with 30 interpolants. [2019-05-23 11:17:22,466 INFO L146 ILogger]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:17:22,466 INFO L146 ILogger]: Start difference. First operand 380 states and 409 transitions. Second operand 30 states. [2019-05-23 11:17:22,724 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:22,725 INFO L146 ILogger]: Finished difference Result 437 states and 471 transitions. [2019-05-23 11:17:22,725 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-05-23 11:17:22,725 INFO L146 ILogger]: Start accepts. Automaton has 30 states. Word has length 281 [2019-05-23 11:17:22,726 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:22,728 INFO L146 ILogger]: With dead ends: 437 [2019-05-23 11:17:22,728 INFO L146 ILogger]: Without dead ends: 405 [2019-05-23 11:17:22,729 INFO L146 ILogger]: 0 DeclaredPredicates, 309 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:17:22,729 INFO L146 ILogger]: Start minimizeSevpa. Operand 405 states. [2019-05-23 11:17:22,733 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 405 to 393. [2019-05-23 11:17:22,734 INFO L146 ILogger]: Start removeUnreachable. Operand 393 states. [2019-05-23 11:17:22,734 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 393 states to 393 states and 423 transitions. [2019-05-23 11:17:22,735 INFO L146 ILogger]: Start accepts. Automaton has 393 states and 423 transitions. Word has length 281 [2019-05-23 11:17:22,735 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:22,735 INFO L146 ILogger]: Abstraction has 393 states and 423 transitions. [2019-05-23 11:17:22,735 INFO L146 ILogger]: Interpolant automaton has 30 states. [2019-05-23 11:17:22,735 INFO L146 ILogger]: Start isEmpty. Operand 393 states and 423 transitions. [2019-05-23 11:17:22,737 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 292 [2019-05-23 11:17:22,737 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:22,737 INFO L146 ILogger]: trace histogram [27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:22,737 INFO L146 ILogger]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:22,738 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:22,738 INFO L146 ILogger]: Analyzing trace with hash -83903099, now seen corresponding path program 27 times [2019-05-23 11:17:22,738 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:22,738 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:22,739 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:22,739 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:22,739 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:22,757 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:23,257 INFO L146 ILogger]: Checked inductivity of 3537 backedges. 0 proven. 3537 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:17:23,258 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:23,258 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:23,267 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:17:25,733 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2019-05-23 11:17:25,733 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:25,740 INFO L146 ILogger]: Trace formula consists of 460 conjuncts, 29 conjunts are in the unsatisfiable core [2019-05-23 11:17:25,742 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:25,818 INFO L146 ILogger]: Checked inductivity of 3537 backedges. 0 proven. 3537 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:17:25,839 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:25,840 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2019-05-23 11:17:25,840 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:17:25,840 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:17:25,841 INFO L146 ILogger]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:17:25,841 INFO L146 ILogger]: Start difference. First operand 393 states and 423 transitions. Second operand 31 states. [2019-05-23 11:17:26,140 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:26,141 INFO L146 ILogger]: Finished difference Result 450 states and 485 transitions. [2019-05-23 11:17:26,141 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:17:26,141 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 291 [2019-05-23 11:17:26,141 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:26,143 INFO L146 ILogger]: With dead ends: 450 [2019-05-23 11:17:26,143 INFO L146 ILogger]: Without dead ends: 418 [2019-05-23 11:17:26,143 INFO L146 ILogger]: 0 DeclaredPredicates, 320 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:17:26,144 INFO L146 ILogger]: Start minimizeSevpa. Operand 418 states. [2019-05-23 11:17:26,148 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 418 to 406. [2019-05-23 11:17:26,148 INFO L146 ILogger]: Start removeUnreachable. Operand 406 states. [2019-05-23 11:17:26,149 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 406 states to 406 states and 437 transitions. [2019-05-23 11:17:26,149 INFO L146 ILogger]: Start accepts. Automaton has 406 states and 437 transitions. Word has length 291 [2019-05-23 11:17:26,149 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:26,150 INFO L146 ILogger]: Abstraction has 406 states and 437 transitions. [2019-05-23 11:17:26,150 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:17:26,150 INFO L146 ILogger]: Start isEmpty. Operand 406 states and 437 transitions. [2019-05-23 11:17:26,151 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 302 [2019-05-23 11:17:26,152 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:26,152 INFO L146 ILogger]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:26,152 INFO L146 ILogger]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:26,152 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:26,152 INFO L146 ILogger]: Analyzing trace with hash -1084051855, now seen corresponding path program 28 times [2019-05-23 11:17:26,153 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:26,153 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:26,153 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:26,153 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:26,154 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:26,171 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:27,191 INFO L146 ILogger]: Checked inductivity of 3808 backedges. 0 proven. 3808 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:17:27,192 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:27,192 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:27,200 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:17:31,117 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:17:31,118 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:31,125 INFO L146 ILogger]: Trace formula consists of 475 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:17:31,129 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:31,303 INFO L146 ILogger]: Checked inductivity of 3808 backedges. 0 proven. 3808 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:17:31,337 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:31,338 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2019-05-23 11:17:31,338 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:17:31,338 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:17:31,339 INFO L146 ILogger]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:17:31,339 INFO L146 ILogger]: Start difference. First operand 406 states and 437 transitions. Second operand 32 states. [2019-05-23 11:17:31,711 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:31,711 INFO L146 ILogger]: Finished difference Result 463 states and 499 transitions. [2019-05-23 11:17:31,711 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:17:31,712 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 301 [2019-05-23 11:17:31,712 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:31,714 INFO L146 ILogger]: With dead ends: 463 [2019-05-23 11:17:31,714 INFO L146 ILogger]: Without dead ends: 431 [2019-05-23 11:17:31,715 INFO L146 ILogger]: 0 DeclaredPredicates, 331 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:17:31,716 INFO L146 ILogger]: Start minimizeSevpa. Operand 431 states. [2019-05-23 11:17:31,720 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 431 to 419. [2019-05-23 11:17:31,720 INFO L146 ILogger]: Start removeUnreachable. Operand 419 states. [2019-05-23 11:17:31,721 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 419 states to 419 states and 451 transitions. [2019-05-23 11:17:31,721 INFO L146 ILogger]: Start accepts. Automaton has 419 states and 451 transitions. Word has length 301 [2019-05-23 11:17:31,721 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:31,722 INFO L146 ILogger]: Abstraction has 419 states and 451 transitions. [2019-05-23 11:17:31,722 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:17:31,722 INFO L146 ILogger]: Start isEmpty. Operand 419 states and 451 transitions. [2019-05-23 11:17:31,723 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 312 [2019-05-23 11:17:31,724 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:31,724 INFO L146 ILogger]: trace histogram [29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:31,724 INFO L146 ILogger]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:31,724 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:31,724 INFO L146 ILogger]: Analyzing trace with hash -1683068835, now seen corresponding path program 29 times [2019-05-23 11:17:31,725 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:31,725 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:31,725 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:31,726 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:31,726 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:31,743 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:32,562 INFO L146 ILogger]: Checked inductivity of 4089 backedges. 0 proven. 4089 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:17:32,562 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:32,562 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:32,570 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:17:34,775 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2019-05-23 11:17:34,776 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:34,781 INFO L146 ILogger]: Trace formula consists of 490 conjuncts, 31 conjunts are in the unsatisfiable core [2019-05-23 11:17:34,783 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:34,884 INFO L146 ILogger]: Checked inductivity of 4089 backedges. 0 proven. 4089 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:17:34,904 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:34,904 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2019-05-23 11:17:34,905 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:17:34,905 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:17:34,906 INFO L146 ILogger]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:17:34,906 INFO L146 ILogger]: Start difference. First operand 419 states and 451 transitions. Second operand 33 states. [2019-05-23 11:17:35,271 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:35,271 INFO L146 ILogger]: Finished difference Result 476 states and 513 transitions. [2019-05-23 11:17:35,272 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-05-23 11:17:35,272 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 311 [2019-05-23 11:17:35,272 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:35,274 INFO L146 ILogger]: With dead ends: 476 [2019-05-23 11:17:35,275 INFO L146 ILogger]: Without dead ends: 444 [2019-05-23 11:17:35,276 INFO L146 ILogger]: 0 DeclaredPredicates, 342 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:17:35,277 INFO L146 ILogger]: Start minimizeSevpa. Operand 444 states. [2019-05-23 11:17:35,280 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 444 to 432. [2019-05-23 11:17:35,280 INFO L146 ILogger]: Start removeUnreachable. Operand 432 states. [2019-05-23 11:17:35,280 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 432 states to 432 states and 465 transitions. [2019-05-23 11:17:35,281 INFO L146 ILogger]: Start accepts. Automaton has 432 states and 465 transitions. Word has length 311 [2019-05-23 11:17:35,281 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:35,281 INFO L146 ILogger]: Abstraction has 432 states and 465 transitions. [2019-05-23 11:17:35,281 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:17:35,281 INFO L146 ILogger]: Start isEmpty. Operand 432 states and 465 transitions. [2019-05-23 11:17:35,282 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 322 [2019-05-23 11:17:35,282 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:35,282 INFO L146 ILogger]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:35,283 INFO L146 ILogger]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:35,283 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:35,283 INFO L146 ILogger]: Analyzing trace with hash 1580968777, now seen corresponding path program 30 times [2019-05-23 11:17:35,283 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:35,283 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:35,284 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:35,284 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:35,284 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:35,301 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:35,945 INFO L146 ILogger]: Checked inductivity of 4380 backedges. 0 proven. 4380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:17:35,945 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:35,946 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:35,953 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:17:49,126 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2019-05-23 11:17:49,126 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:49,136 INFO L146 ILogger]: Trace formula consists of 505 conjuncts, 32 conjunts are in the unsatisfiable core [2019-05-23 11:17:49,139 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:49,266 INFO L146 ILogger]: Checked inductivity of 4380 backedges. 0 proven. 4380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:17:49,303 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:49,303 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2019-05-23 11:17:49,304 INFO L146 ILogger]: Interpolant automaton has 34 states [2019-05-23 11:17:49,304 INFO L146 ILogger]: Constructing interpolant automaton starting with 34 interpolants. [2019-05-23 11:17:49,305 INFO L146 ILogger]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2019-05-23 11:17:49,305 INFO L146 ILogger]: Start difference. First operand 432 states and 465 transitions. Second operand 34 states. [2019-05-23 11:17:49,658 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:49,658 INFO L146 ILogger]: Finished difference Result 489 states and 527 transitions. [2019-05-23 11:17:49,658 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-05-23 11:17:49,658 INFO L146 ILogger]: Start accepts. Automaton has 34 states. Word has length 321 [2019-05-23 11:17:49,659 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:49,660 INFO L146 ILogger]: With dead ends: 489 [2019-05-23 11:17:49,660 INFO L146 ILogger]: Without dead ends: 457 [2019-05-23 11:17:49,661 INFO L146 ILogger]: 0 DeclaredPredicates, 353 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2019-05-23 11:17:49,662 INFO L146 ILogger]: Start minimizeSevpa. Operand 457 states. [2019-05-23 11:17:49,667 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 457 to 445. [2019-05-23 11:17:49,667 INFO L146 ILogger]: Start removeUnreachable. Operand 445 states. [2019-05-23 11:17:49,668 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 445 states to 445 states and 479 transitions. [2019-05-23 11:17:49,668 INFO L146 ILogger]: Start accepts. Automaton has 445 states and 479 transitions. Word has length 321 [2019-05-23 11:17:49,669 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:49,669 INFO L146 ILogger]: Abstraction has 445 states and 479 transitions. [2019-05-23 11:17:49,669 INFO L146 ILogger]: Interpolant automaton has 34 states. [2019-05-23 11:17:49,669 INFO L146 ILogger]: Start isEmpty. Operand 445 states and 479 transitions. [2019-05-23 11:17:49,671 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 332 [2019-05-23 11:17:49,671 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:49,671 INFO L146 ILogger]: trace histogram [31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:49,672 INFO L146 ILogger]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:49,672 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:49,672 INFO L146 ILogger]: Analyzing trace with hash 1299396405, now seen corresponding path program 31 times [2019-05-23 11:17:49,672 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:49,672 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:49,673 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:49,673 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:49,673 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:49,692 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:50,872 INFO L146 ILogger]: Checked inductivity of 4681 backedges. 0 proven. 4681 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:17:50,873 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:50,873 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:50,884 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:50,963 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:50,966 INFO L146 ILogger]: Trace formula consists of 520 conjuncts, 33 conjunts are in the unsatisfiable core [2019-05-23 11:17:50,971 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:51,156 INFO L146 ILogger]: Checked inductivity of 4681 backedges. 0 proven. 4681 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:17:51,186 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:51,186 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2019-05-23 11:17:51,187 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:17:51,187 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:17:51,188 INFO L146 ILogger]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:17:51,188 INFO L146 ILogger]: Start difference. First operand 445 states and 479 transitions. Second operand 35 states. [2019-05-23 11:17:51,542 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:51,543 INFO L146 ILogger]: Finished difference Result 502 states and 541 transitions. [2019-05-23 11:17:51,543 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-05-23 11:17:51,543 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 331 [2019-05-23 11:17:51,544 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:51,549 INFO L146 ILogger]: With dead ends: 502 [2019-05-23 11:17:51,549 INFO L146 ILogger]: Without dead ends: 470 [2019-05-23 11:17:51,550 INFO L146 ILogger]: 0 DeclaredPredicates, 364 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:17:51,551 INFO L146 ILogger]: Start minimizeSevpa. Operand 470 states. [2019-05-23 11:17:51,557 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 470 to 458. [2019-05-23 11:17:51,557 INFO L146 ILogger]: Start removeUnreachable. Operand 458 states. [2019-05-23 11:17:51,558 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 458 states to 458 states and 493 transitions. [2019-05-23 11:17:51,559 INFO L146 ILogger]: Start accepts. Automaton has 458 states and 493 transitions. Word has length 331 [2019-05-23 11:17:51,560 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:51,560 INFO L146 ILogger]: Abstraction has 458 states and 493 transitions. [2019-05-23 11:17:51,560 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:17:51,560 INFO L146 ILogger]: Start isEmpty. Operand 458 states and 493 transitions. [2019-05-23 11:17:51,562 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 342 [2019-05-23 11:17:51,562 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:51,562 INFO L146 ILogger]: trace histogram [32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:51,562 INFO L146 ILogger]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:51,563 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:51,563 INFO L146 ILogger]: Analyzing trace with hash 1405996065, now seen corresponding path program 32 times [2019-05-23 11:17:51,563 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:51,563 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:51,564 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:51,564 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:51,564 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:51,588 INFO L146 ILogger]: Conjunction of SSA is unsat