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_copyInitSum3_true-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:17:52,898 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:17:52,903 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:17:52,923 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:17:52,923 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:17:52,924 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:17:52,927 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:17:52,929 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:17:52,932 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:17:52,935 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:17:52,936 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:17:52,936 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:17:52,937 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:17:52,940 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:17:52,949 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:17:52,950 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:17:52,951 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:17:52,956 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:17:52,962 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:17:52,965 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:17:52,967 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:17:52,968 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:17:52,973 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:17:52,973 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:17:52,975 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:17:52,976 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:17:52,977 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:17:52,978 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:17:52,978 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:17:52,979 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:17:52,981 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:17:52,982 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:17:52,985 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:17:52,985 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:17:52,986 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:17:52,986 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:17:52,986 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:17:52,987 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:17:52,989 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:17:52,989 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:17:53,014 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:17:53,015 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:17:53,018 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:17:53,018 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:17:53,018 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:17:53,018 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:17:53,019 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:17:53,019 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:17:53,019 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:17:53,019 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:17:53,020 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:17:53,020 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:17:53,020 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:17:53,021 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:17:53,021 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:17:53,021 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:17:53,021 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:17:53,022 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:17:53,023 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:17:53,023 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:17:53,023 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:17:53,023 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:17:53,024 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:17:53,024 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:17:53,024 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:17:53,024 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:17:53,025 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:17:53,025 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:17:53,025 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 11:17:53,072 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:17:53,086 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:17:53,093 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:17:53,094 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:17:53,095 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:17:53,096 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_copyInitSum3_true-unreach-call_ground.i [2019-05-23 11:17:53,161 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ca876d55/d6ebf5fb797f44779215764a1677af85/FLAG517740144 [2019-05-23 11:17:53,601 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:17:53,602 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_copyInitSum3_true-unreach-call_ground.i [2019-05-23 11:17:53,610 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ca876d55/d6ebf5fb797f44779215764a1677af85/FLAG517740144 [2019-05-23 11:17:53,973 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ca876d55/d6ebf5fb797f44779215764a1677af85 [2019-05-23 11:17:53,981 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:17:53,982 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:17:53,984 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:17:53,984 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:17:53,987 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:17:53,988 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:17:53" (1/1) ... [2019-05-23 11:17:53,991 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72355714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:53, skipping insertion in model container [2019-05-23 11:17:53,992 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:17:53" (1/1) ... [2019-05-23 11:17:53,999 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:17:54,016 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:17:54,246 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:17:54,253 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:17:54,288 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:17:54,314 INFO L146 ILogger]: Completed translation [2019-05-23 11:17:54,315 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:54 WrapperNode [2019-05-23 11:17:54,315 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:17:54,316 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:17:54,317 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:17:54,317 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:17:54,327 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:54" (1/1) ... [2019-05-23 11:17:54,343 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:54" (1/1) ... [2019-05-23 11:17:54,372 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:17:54,372 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:17:54,373 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:17:54,373 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:17:54,385 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:54" (1/1) ... [2019-05-23 11:17:54,385 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:54" (1/1) ... [2019-05-23 11:17:54,388 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:54" (1/1) ... [2019-05-23 11:17:54,388 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:54" (1/1) ... [2019-05-23 11:17:54,410 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:54" (1/1) ... [2019-05-23 11:17:54,514 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:54" (1/1) ... [2019-05-23 11:17:54,519 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:54" (1/1) ... [2019-05-23 11:17:54,521 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:17:54,521 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:17:54,521 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:17:54,522 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:17:54,522 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:54" (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 11:17:54,585 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:17:54,585 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:17:54,585 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:17:54,585 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:17:54,585 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:17:54,586 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:17:55,056 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:17:55,056 INFO L146 ILogger]: Removed 11 assume(true) statements. [2019-05-23 11:17:55,057 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:17:55 BoogieIcfgContainer [2019-05-23 11:17:55,058 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:17:55,059 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:17:55,059 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:17:55,062 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:17:55,062 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:17:53" (1/3) ... [2019-05-23 11:17:55,063 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7274bc15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:17:55, skipping insertion in model container [2019-05-23 11:17:55,063 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:54" (2/3) ... [2019-05-23 11:17:55,064 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7274bc15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:17:55, skipping insertion in model container [2019-05-23 11:17:55,064 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:17:55" (3/3) ... [2019-05-23 11:17:55,066 INFO L146 ILogger]: Analyzing ICFG standard_copyInitSum3_true-unreach-call_ground.i [2019-05-23 11:17:55,075 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:17:55,082 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:17:55,098 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:17:55,124 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:17:55,125 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:17:55,125 INFO L146 ILogger]: Hoare is true [2019-05-23 11:17:55,125 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:17:55,125 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:17:55,126 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:17:55,126 INFO L146 ILogger]: Difference is false [2019-05-23 11:17:55,126 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:17:55,126 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:17:55,140 INFO L146 ILogger]: Start isEmpty. Operand 58 states. [2019-05-23 11:17:55,147 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 24 [2019-05-23 11:17:55,147 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:55,148 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] [2019-05-23 11:17:55,150 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:55,154 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:55,155 INFO L146 ILogger]: Analyzing trace with hash 390726820, now seen corresponding path program 1 times [2019-05-23 11:17:55,156 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:55,156 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:55,195 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:55,196 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:55,196 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:55,233 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:55,276 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 11:17:55,279 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:17:55,279 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:17:55,282 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:17:55,295 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:17:55,296 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:17:55,298 INFO L146 ILogger]: Start difference. First operand 58 states. Second operand 2 states. [2019-05-23 11:17:55,316 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:55,316 INFO L146 ILogger]: Finished difference Result 106 states and 124 transitions. [2019-05-23 11:17:55,317 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:17:55,318 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 23 [2019-05-23 11:17:55,318 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:55,327 INFO L146 ILogger]: With dead ends: 106 [2019-05-23 11:17:55,327 INFO L146 ILogger]: Without dead ends: 50 [2019-05-23 11:17:55,330 INFO L146 ILogger]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:17:55,344 INFO L146 ILogger]: Start minimizeSevpa. Operand 50 states. [2019-05-23 11:17:55,361 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 50 to 50. [2019-05-23 11:17:55,362 INFO L146 ILogger]: Start removeUnreachable. Operand 50 states. [2019-05-23 11:17:55,364 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2019-05-23 11:17:55,365 INFO L146 ILogger]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 23 [2019-05-23 11:17:55,366 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:55,366 INFO L146 ILogger]: Abstraction has 50 states and 54 transitions. [2019-05-23 11:17:55,366 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:17:55,366 INFO L146 ILogger]: Start isEmpty. Operand 50 states and 54 transitions. [2019-05-23 11:17:55,367 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 24 [2019-05-23 11:17:55,367 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:55,368 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] [2019-05-23 11:17:55,368 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:55,368 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:55,368 INFO L146 ILogger]: Analyzing trace with hash -994767744, now seen corresponding path program 1 times [2019-05-23 11:17:55,369 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:55,369 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:55,370 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:55,370 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:55,370 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:55,391 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:55,444 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 11:17:55,444 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:17:55,445 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:17:55,447 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:17:55,447 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:17:55,447 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:17:55,448 INFO L146 ILogger]: Start difference. First operand 50 states and 54 transitions. Second operand 3 states. [2019-05-23 11:17:55,749 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:55,749 INFO L146 ILogger]: Finished difference Result 113 states and 124 transitions. [2019-05-23 11:17:55,751 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:17:55,752 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 23 [2019-05-23 11:17:55,752 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:55,753 INFO L146 ILogger]: With dead ends: 113 [2019-05-23 11:17:55,754 INFO L146 ILogger]: Without dead ends: 73 [2019-05-23 11:17:55,757 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 11:17:55,758 INFO L146 ILogger]: Start minimizeSevpa. Operand 73 states. [2019-05-23 11:17:55,768 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 73 to 54. [2019-05-23 11:17:55,768 INFO L146 ILogger]: Start removeUnreachable. Operand 54 states. [2019-05-23 11:17:55,769 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2019-05-23 11:17:55,770 INFO L146 ILogger]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 23 [2019-05-23 11:17:55,771 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:55,772 INFO L146 ILogger]: Abstraction has 54 states and 58 transitions. [2019-05-23 11:17:55,772 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:17:55,772 INFO L146 ILogger]: Start isEmpty. Operand 54 states and 58 transitions. [2019-05-23 11:17:55,774 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 50 [2019-05-23 11:17:55,774 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:55,774 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:55,774 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:55,776 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:55,777 INFO L146 ILogger]: Analyzing trace with hash -1521994181, now seen corresponding path program 1 times [2019-05-23 11:17:55,777 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:55,777 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:55,778 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:55,779 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:55,779 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:55,825 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:55,930 INFO L146 ILogger]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-05-23 11:17:55,931 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:55,931 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 11:17:55,949 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:55,992 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:55,994 INFO L146 ILogger]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:17:56,001 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:56,051 INFO L146 ILogger]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-05-23 11:17:56,074 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:56,075 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2019-05-23 11:17:56,075 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:17:56,075 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:17:56,076 INFO L146 ILogger]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:17:56,076 INFO L146 ILogger]: Start difference. First operand 54 states and 58 transitions. Second operand 6 states. [2019-05-23 11:17:56,465 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:56,466 INFO L146 ILogger]: Finished difference Result 126 states and 135 transitions. [2019-05-23 11:17:56,470 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:17:56,471 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 49 [2019-05-23 11:17:56,471 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:56,472 INFO L146 ILogger]: With dead ends: 126 [2019-05-23 11:17:56,472 INFO L146 ILogger]: Without dead ends: 83 [2019-05-23 11:17:56,473 INFO L146 ILogger]: 0 DeclaredPredicates, 55 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:17:56,476 INFO L146 ILogger]: Start minimizeSevpa. Operand 83 states. [2019-05-23 11:17:56,487 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 83 to 64. [2019-05-23 11:17:56,489 INFO L146 ILogger]: Start removeUnreachable. Operand 64 states. [2019-05-23 11:17:56,491 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2019-05-23 11:17:56,491 INFO L146 ILogger]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 49 [2019-05-23 11:17:56,491 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:56,491 INFO L146 ILogger]: Abstraction has 64 states and 68 transitions. [2019-05-23 11:17:56,492 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:17:56,492 INFO L146 ILogger]: Start isEmpty. Operand 64 states and 68 transitions. [2019-05-23 11:17:56,494 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 60 [2019-05-23 11:17:56,495 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:56,495 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:56,495 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:56,496 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:56,498 INFO L146 ILogger]: Analyzing trace with hash 504283866, now seen corresponding path program 2 times [2019-05-23 11:17:56,499 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:56,499 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:56,500 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:56,500 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:56,500 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:56,543 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:56,654 INFO L146 ILogger]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-05-23 11:17:56,655 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:56,655 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:17:56,685 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:17:56,715 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:17:56,716 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:56,716 INFO L146 ILogger]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:17:56,721 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:56,753 INFO L146 ILogger]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-05-23 11:17:56,783 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:56,784 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-05-23 11:17:56,784 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:17:56,784 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:17:56,785 INFO L146 ILogger]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:17:56,785 INFO L146 ILogger]: Start difference. First operand 64 states and 68 transitions. Second operand 7 states. [2019-05-23 11:17:57,289 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:57,289 INFO L146 ILogger]: Finished difference Result 138 states and 147 transitions. [2019-05-23 11:17:57,292 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:17:57,292 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 59 [2019-05-23 11:17:57,292 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:57,294 INFO L146 ILogger]: With dead ends: 138 [2019-05-23 11:17:57,294 INFO L146 ILogger]: Without dead ends: 88 [2019-05-23 11:17:57,295 INFO L146 ILogger]: 0 DeclaredPredicates, 65 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:17:57,296 INFO L146 ILogger]: Start minimizeSevpa. Operand 88 states. [2019-05-23 11:17:57,305 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 88 to 74. [2019-05-23 11:17:57,306 INFO L146 ILogger]: Start removeUnreachable. Operand 74 states. [2019-05-23 11:17:57,308 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2019-05-23 11:17:57,308 INFO L146 ILogger]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 59 [2019-05-23 11:17:57,308 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:57,309 INFO L146 ILogger]: Abstraction has 74 states and 78 transitions. [2019-05-23 11:17:57,310 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:17:57,310 INFO L146 ILogger]: Start isEmpty. Operand 74 states and 78 transitions. [2019-05-23 11:17:57,311 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 70 [2019-05-23 11:17:57,311 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:57,312 INFO L146 ILogger]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:57,312 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:57,312 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:57,312 INFO L146 ILogger]: Analyzing trace with hash 853316948, now seen corresponding path program 3 times [2019-05-23 11:17:57,312 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:57,313 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:57,313 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:57,314 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:57,314 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:57,340 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:57,424 INFO L146 ILogger]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-05-23 11:17:57,425 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:57,425 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 11:17:57,435 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:17:57,482 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:17:57,482 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:57,483 INFO L146 ILogger]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:17:57,486 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:57,561 INFO L146 ILogger]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-05-23 11:17:57,580 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:57,580 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-05-23 11:17:57,580 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:17:57,581 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:17:57,581 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:17:57,581 INFO L146 ILogger]: Start difference. First operand 74 states and 78 transitions. Second operand 7 states. [2019-05-23 11:17:57,795 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:57,796 INFO L146 ILogger]: Finished difference Result 104 states and 109 transitions. [2019-05-23 11:17:57,796 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:17:57,796 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 69 [2019-05-23 11:17:57,797 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:57,798 INFO L146 ILogger]: With dead ends: 104 [2019-05-23 11:17:57,798 INFO L146 ILogger]: Without dead ends: 90 [2019-05-23 11:17:57,799 INFO L146 ILogger]: 0 DeclaredPredicates, 75 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:17:57,800 INFO L146 ILogger]: Start minimizeSevpa. Operand 90 states. [2019-05-23 11:17:57,806 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 90 to 83. [2019-05-23 11:17:57,806 INFO L146 ILogger]: Start removeUnreachable. Operand 83 states. [2019-05-23 11:17:57,807 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2019-05-23 11:17:57,807 INFO L146 ILogger]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 69 [2019-05-23 11:17:57,807 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:57,808 INFO L146 ILogger]: Abstraction has 83 states and 87 transitions. [2019-05-23 11:17:57,808 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:17:57,808 INFO L146 ILogger]: Start isEmpty. Operand 83 states and 87 transitions. [2019-05-23 11:17:57,809 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 79 [2019-05-23 11:17:57,809 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:57,809 INFO L146 ILogger]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:57,810 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:57,810 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:57,810 INFO L146 ILogger]: Analyzing trace with hash -1782746581, now seen corresponding path program 4 times [2019-05-23 11:17:57,810 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:57,810 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:57,811 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:57,811 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:57,812 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:57,833 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:57,932 INFO L146 ILogger]: Checked inductivity of 41 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-05-23 11:17:57,933 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:57,933 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 11:17:57,943 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:17:57,999 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:17:57,999 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:58,000 INFO L146 ILogger]: Trace formula consists of 129 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:17:58,003 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:58,052 INFO L146 ILogger]: Checked inductivity of 41 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-05-23 11:17:58,072 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:58,072 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2019-05-23 11:17:58,073 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:17:58,073 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:17:58,073 INFO L146 ILogger]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:17:58,074 INFO L146 ILogger]: Start difference. First operand 83 states and 87 transitions. Second operand 9 states. [2019-05-23 11:17:58,633 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:58,634 INFO L146 ILogger]: Finished difference Result 166 states and 175 transitions. [2019-05-23 11:17:58,634 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-05-23 11:17:58,634 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 78 [2019-05-23 11:17:58,635 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:58,636 INFO L146 ILogger]: With dead ends: 166 [2019-05-23 11:17:58,636 INFO L146 ILogger]: Without dead ends: 100 [2019-05-23 11:17:58,637 INFO L146 ILogger]: 0 DeclaredPredicates, 88 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:17:58,638 INFO L146 ILogger]: Start minimizeSevpa. Operand 100 states. [2019-05-23 11:17:58,643 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 100 to 93. [2019-05-23 11:17:58,643 INFO L146 ILogger]: Start removeUnreachable. Operand 93 states. [2019-05-23 11:17:58,644 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2019-05-23 11:17:58,644 INFO L146 ILogger]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 78 [2019-05-23 11:17:58,645 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:58,645 INFO L146 ILogger]: Abstraction has 93 states and 97 transitions. [2019-05-23 11:17:58,645 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:17:58,645 INFO L146 ILogger]: Start isEmpty. Operand 93 states and 97 transitions. [2019-05-23 11:17:58,646 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 89 [2019-05-23 11:17:58,646 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:58,647 INFO L146 ILogger]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:58,647 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:58,647 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:58,647 INFO L146 ILogger]: Analyzing trace with hash -1367618900, now seen corresponding path program 5 times [2019-05-23 11:17:58,648 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:58,648 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:58,648 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:58,649 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:58,649 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:58,671 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:58,816 INFO L146 ILogger]: Checked inductivity of 66 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-05-23 11:17:58,817 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:58,817 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 11:17:58,828 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:17:59,049 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2019-05-23 11:17:59,049 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:59,051 INFO L146 ILogger]: Trace formula consists of 143 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:17:59,061 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:59,296 INFO L146 ILogger]: Checked inductivity of 66 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-05-23 11:17:59,315 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:59,316 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 12 [2019-05-23 11:17:59,316 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:17:59,316 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:17:59,317 INFO L146 ILogger]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:17:59,317 INFO L146 ILogger]: Start difference. First operand 93 states and 97 transitions. Second operand 12 states. [2019-05-23 11:17:59,672 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:59,673 INFO L146 ILogger]: Finished difference Result 173 states and 181 transitions. [2019-05-23 11:17:59,673 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-05-23 11:17:59,673 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 88 [2019-05-23 11:17:59,674 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:59,675 INFO L146 ILogger]: With dead ends: 173 [2019-05-23 11:17:59,675 INFO L146 ILogger]: Without dead ends: 123 [2019-05-23 11:17:59,676 INFO L146 ILogger]: 0 DeclaredPredicates, 106 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:17:59,676 INFO L146 ILogger]: Start minimizeSevpa. Operand 123 states. [2019-05-23 11:17:59,684 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 123 to 109. [2019-05-23 11:17:59,685 INFO L146 ILogger]: Start removeUnreachable. Operand 109 states. [2019-05-23 11:17:59,686 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2019-05-23 11:17:59,686 INFO L146 ILogger]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 88 [2019-05-23 11:17:59,687 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:59,687 INFO L146 ILogger]: Abstraction has 109 states and 113 transitions. [2019-05-23 11:17:59,687 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:17:59,687 INFO L146 ILogger]: Start isEmpty. Operand 109 states and 113 transitions. [2019-05-23 11:17:59,689 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 105 [2019-05-23 11:17:59,689 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:59,689 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:59,690 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:59,690 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:59,690 INFO L146 ILogger]: Analyzing trace with hash 249035775, now seen corresponding path program 6 times [2019-05-23 11:17:59,690 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:59,691 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:59,691 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:59,692 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:59,692 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:59,716 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:59,876 INFO L146 ILogger]: Checked inductivity of 107 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-05-23 11:17:59,877 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:59,877 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 11:17:59,889 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:17:59,958 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-05-23 11:17:59,959 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:59,960 INFO L146 ILogger]: Trace formula consists of 166 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:17:59,964 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:59,998 INFO L146 ILogger]: Checked inductivity of 107 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2019-05-23 11:18:00,017 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:00,018 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 12 [2019-05-23 11:18:00,018 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:18:00,018 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:18:00,019 INFO L146 ILogger]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:18:00,019 INFO L146 ILogger]: Start difference. First operand 109 states and 113 transitions. Second operand 12 states. [2019-05-23 11:18:00,298 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:00,299 INFO L146 ILogger]: Finished difference Result 215 states and 224 transitions. [2019-05-23 11:18:00,299 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-05-23 11:18:00,299 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 104 [2019-05-23 11:18:00,300 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:00,300 INFO L146 ILogger]: With dead ends: 215 [2019-05-23 11:18:00,300 INFO L146 ILogger]: Without dead ends: 126 [2019-05-23 11:18:00,301 INFO L146 ILogger]: 0 DeclaredPredicates, 122 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=249, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:18:00,302 INFO L146 ILogger]: Start minimizeSevpa. Operand 126 states. [2019-05-23 11:18:00,307 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 126 to 119. [2019-05-23 11:18:00,307 INFO L146 ILogger]: Start removeUnreachable. Operand 119 states. [2019-05-23 11:18:00,309 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 119 states to 119 states and 123 transitions. [2019-05-23 11:18:00,309 INFO L146 ILogger]: Start accepts. Automaton has 119 states and 123 transitions. Word has length 104 [2019-05-23 11:18:00,309 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:00,310 INFO L146 ILogger]: Abstraction has 119 states and 123 transitions. [2019-05-23 11:18:00,310 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:18:00,310 INFO L146 ILogger]: Start isEmpty. Operand 119 states and 123 transitions. [2019-05-23 11:18:00,311 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 115 [2019-05-23 11:18:00,312 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:00,312 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:00,312 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:00,312 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:00,313 INFO L146 ILogger]: Analyzing trace with hash -1632874338, now seen corresponding path program 7 times [2019-05-23 11:18:00,313 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:00,313 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:00,314 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:00,314 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:00,314 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:00,356 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:01,166 INFO L146 ILogger]: Checked inductivity of 149 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2019-05-23 11:18:01,166 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:01,167 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 11:18:01,176 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:18:01,220 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:01,221 INFO L146 ILogger]: Trace formula consists of 180 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:18:01,224 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:01,264 INFO L146 ILogger]: Checked inductivity of 149 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2019-05-23 11:18:01,284 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:01,284 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 14 [2019-05-23 11:18:01,285 INFO L146 ILogger]: Interpolant automaton has 14 states [2019-05-23 11:18:01,285 INFO L146 ILogger]: Constructing interpolant automaton starting with 14 interpolants. [2019-05-23 11:18:01,286 INFO L146 ILogger]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:18:01,286 INFO L146 ILogger]: Start difference. First operand 119 states and 123 transitions. Second operand 14 states. [2019-05-23 11:18:01,883 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:01,884 INFO L146 ILogger]: Finished difference Result 232 states and 241 transitions. [2019-05-23 11:18:01,884 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:18:01,886 INFO L146 ILogger]: Start accepts. Automaton has 14 states. Word has length 114 [2019-05-23 11:18:01,886 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:01,887 INFO L146 ILogger]: With dead ends: 232 [2019-05-23 11:18:01,888 INFO L146 ILogger]: Without dead ends: 136 [2019-05-23 11:18:01,888 INFO L146 ILogger]: 0 DeclaredPredicates, 136 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=187, Invalid=365, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:18:01,889 INFO L146 ILogger]: Start minimizeSevpa. Operand 136 states. [2019-05-23 11:18:01,894 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 136 to 129. [2019-05-23 11:18:01,894 INFO L146 ILogger]: Start removeUnreachable. Operand 129 states. [2019-05-23 11:18:01,895 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 129 states to 129 states and 133 transitions. [2019-05-23 11:18:01,895 INFO L146 ILogger]: Start accepts. Automaton has 129 states and 133 transitions. Word has length 114 [2019-05-23 11:18:01,895 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:01,896 INFO L146 ILogger]: Abstraction has 129 states and 133 transitions. [2019-05-23 11:18:01,896 INFO L146 ILogger]: Interpolant automaton has 14 states. [2019-05-23 11:18:01,896 INFO L146 ILogger]: Start isEmpty. Operand 129 states and 133 transitions. [2019-05-23 11:18:01,897 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 125 [2019-05-23 11:18:01,897 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:01,897 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:01,898 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:01,898 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:01,898 INFO L146 ILogger]: Analyzing trace with hash -335267489, now seen corresponding path program 8 times [2019-05-23 11:18:01,898 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:01,898 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:01,899 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:01,899 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:18:01,900 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:01,922 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:02,549 INFO L146 ILogger]: Checked inductivity of 201 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2019-05-23 11:18:02,549 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:02,549 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 11:18:02,560 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:18:02,616 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:18:02,616 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:02,617 INFO L146 ILogger]: Trace formula consists of 194 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:18:02,619 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:02,647 INFO L146 ILogger]: Checked inductivity of 201 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2019-05-23 11:18:02,667 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:02,667 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 16 [2019-05-23 11:18:02,667 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:18:02,668 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:18:02,668 INFO L146 ILogger]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:18:02,668 INFO L146 ILogger]: Start difference. First operand 129 states and 133 transitions. Second operand 16 states. [2019-05-23 11:18:03,185 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:03,185 INFO L146 ILogger]: Finished difference Result 249 states and 258 transitions. [2019-05-23 11:18:03,186 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:18:03,186 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 124 [2019-05-23 11:18:03,187 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:03,187 INFO L146 ILogger]: With dead ends: 249 [2019-05-23 11:18:03,187 INFO L146 ILogger]: Without dead ends: 146 [2019-05-23 11:18:03,189 INFO L146 ILogger]: 0 DeclaredPredicates, 150 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=253, Invalid=503, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:18:03,189 INFO L146 ILogger]: Start minimizeSevpa. Operand 146 states. [2019-05-23 11:18:03,195 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 146 to 139. [2019-05-23 11:18:03,195 INFO L146 ILogger]: Start removeUnreachable. Operand 139 states. [2019-05-23 11:18:03,196 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 139 states to 139 states and 143 transitions. [2019-05-23 11:18:03,196 INFO L146 ILogger]: Start accepts. Automaton has 139 states and 143 transitions. Word has length 124 [2019-05-23 11:18:03,196 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:03,196 INFO L146 ILogger]: Abstraction has 139 states and 143 transitions. [2019-05-23 11:18:03,197 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:18:03,197 INFO L146 ILogger]: Start isEmpty. Operand 139 states and 143 transitions. [2019-05-23 11:18:03,198 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 135 [2019-05-23 11:18:03,198 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:03,198 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:03,199 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:03,199 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:03,199 INFO L146 ILogger]: Analyzing trace with hash 1740714942, now seen corresponding path program 9 times [2019-05-23 11:18:03,199 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:03,200 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:03,202 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:03,202 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:03,202 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:03,222 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:03,417 INFO L146 ILogger]: Checked inductivity of 263 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2019-05-23 11:18:03,417 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:03,417 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 11:18:03,426 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:18:03,459 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:18:03,459 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:03,460 INFO L146 ILogger]: Trace formula consists of 125 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:18:03,464 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:03,548 INFO L146 ILogger]: Checked inductivity of 263 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2019-05-23 11:18:03,567 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:03,567 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 7] total 20 [2019-05-23 11:18:03,568 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:18:03,568 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:18:03,568 INFO L146 ILogger]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:18:03,569 INFO L146 ILogger]: Start difference. First operand 139 states and 143 transitions. Second operand 20 states. [2019-05-23 11:18:04,060 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:04,060 INFO L146 ILogger]: Finished difference Result 278 states and 288 transitions. [2019-05-23 11:18:04,060 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-05-23 11:18:04,061 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 134 [2019-05-23 11:18:04,061 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:04,062 INFO L146 ILogger]: With dead ends: 278 [2019-05-23 11:18:04,063 INFO L146 ILogger]: Without dead ends: 168 [2019-05-23 11:18:04,064 INFO L146 ILogger]: 0 DeclaredPredicates, 168 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=383, Invalid=1023, Unknown=0, NotChecked=0, Total=1406 [2019-05-23 11:18:04,065 INFO L146 ILogger]: Start minimizeSevpa. Operand 168 states. [2019-05-23 11:18:04,068 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 168 to 156. [2019-05-23 11:18:04,069 INFO L146 ILogger]: Start removeUnreachable. Operand 156 states. [2019-05-23 11:18:04,069 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 156 states to 156 states and 160 transitions. [2019-05-23 11:18:04,069 INFO L146 ILogger]: Start accepts. Automaton has 156 states and 160 transitions. Word has length 134 [2019-05-23 11:18:04,070 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:04,070 INFO L146 ILogger]: Abstraction has 156 states and 160 transitions. [2019-05-23 11:18:04,070 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:18:04,070 INFO L146 ILogger]: Start isEmpty. Operand 156 states and 160 transitions. [2019-05-23 11:18:04,071 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 152 [2019-05-23 11:18:04,071 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:04,072 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:04,072 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:04,072 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:04,072 INFO L146 ILogger]: Analyzing trace with hash -1017845894, now seen corresponding path program 10 times [2019-05-23 11:18:04,072 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:04,073 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:04,073 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:04,073 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:04,074 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:04,094 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:04,286 INFO L146 ILogger]: Checked inductivity of 350 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2019-05-23 11:18:04,287 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:04,287 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:18:04,298 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:18:04,378 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:18:04,378 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:04,379 INFO L146 ILogger]: Trace formula consists of 232 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:18:04,381 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:04,434 INFO L146 ILogger]: Checked inductivity of 350 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2019-05-23 11:18:04,460 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:04,460 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11] total 20 [2019-05-23 11:18:04,460 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:18:04,461 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:18:04,461 INFO L146 ILogger]: CoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:18:04,461 INFO L146 ILogger]: Start difference. First operand 156 states and 160 transitions. Second operand 20 states. [2019-05-23 11:18:04,926 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:04,926 INFO L146 ILogger]: Finished difference Result 297 states and 306 transitions. [2019-05-23 11:18:04,926 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:18:04,927 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 151 [2019-05-23 11:18:04,927 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:04,928 INFO L146 ILogger]: With dead ends: 297 [2019-05-23 11:18:04,929 INFO L146 ILogger]: Without dead ends: 173 [2019-05-23 11:18:04,930 INFO L146 ILogger]: 0 DeclaredPredicates, 185 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=415, Invalid=845, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:18:04,931 INFO L146 ILogger]: Start minimizeSevpa. Operand 173 states. [2019-05-23 11:18:04,934 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 173 to 166. [2019-05-23 11:18:04,934 INFO L146 ILogger]: Start removeUnreachable. Operand 166 states. [2019-05-23 11:18:04,935 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 166 states to 166 states and 170 transitions. [2019-05-23 11:18:04,935 INFO L146 ILogger]: Start accepts. Automaton has 166 states and 170 transitions. Word has length 151 [2019-05-23 11:18:04,935 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:04,935 INFO L146 ILogger]: Abstraction has 166 states and 170 transitions. [2019-05-23 11:18:04,935 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:18:04,936 INFO L146 ILogger]: Start isEmpty. Operand 166 states and 170 transitions. [2019-05-23 11:18:04,937 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 162 [2019-05-23 11:18:04,937 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:04,937 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:04,938 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:04,938 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:04,938 INFO L146 ILogger]: Analyzing trace with hash 713737851, now seen corresponding path program 11 times [2019-05-23 11:18:04,938 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:04,938 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:04,939 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:04,939 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:04,939 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:04,961 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:05,209 INFO L146 ILogger]: Checked inductivity of 432 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2019-05-23 11:18:05,209 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:05,209 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:18:05,219 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:18:08,760 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2019-05-23 11:18:08,760 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:08,767 INFO L146 ILogger]: Trace formula consists of 246 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:18:08,770 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:08,918 INFO L146 ILogger]: Checked inductivity of 432 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2019-05-23 11:18:08,939 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:08,939 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 9] total 25 [2019-05-23 11:18:08,940 INFO L146 ILogger]: Interpolant automaton has 25 states [2019-05-23 11:18:08,940 INFO L146 ILogger]: Constructing interpolant automaton starting with 25 interpolants. [2019-05-23 11:18:08,941 INFO L146 ILogger]: CoverageRelationStatistics Valid=141, Invalid=459, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:18:08,941 INFO L146 ILogger]: Start difference. First operand 166 states and 170 transitions. Second operand 25 states. [2019-05-23 11:18:09,755 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:09,755 INFO L146 ILogger]: Finished difference Result 330 states and 340 transitions. [2019-05-23 11:18:09,756 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-05-23 11:18:09,756 INFO L146 ILogger]: Start accepts. Automaton has 25 states. Word has length 161 [2019-05-23 11:18:09,756 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:09,757 INFO L146 ILogger]: With dead ends: 330 [2019-05-23 11:18:09,757 INFO L146 ILogger]: Without dead ends: 199 [2019-05-23 11:18:09,758 INFO L146 ILogger]: 0 DeclaredPredicates, 205 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=611, Invalid=1741, Unknown=0, NotChecked=0, Total=2352 [2019-05-23 11:18:09,759 INFO L146 ILogger]: Start minimizeSevpa. Operand 199 states. [2019-05-23 11:18:09,762 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 199 to 185. [2019-05-23 11:18:09,762 INFO L146 ILogger]: Start removeUnreachable. Operand 185 states. [2019-05-23 11:18:09,763 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 185 states to 185 states and 189 transitions. [2019-05-23 11:18:09,763 INFO L146 ILogger]: Start accepts. Automaton has 185 states and 189 transitions. Word has length 161 [2019-05-23 11:18:09,763 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:09,763 INFO L146 ILogger]: Abstraction has 185 states and 189 transitions. [2019-05-23 11:18:09,764 INFO L146 ILogger]: Interpolant automaton has 25 states. [2019-05-23 11:18:09,764 INFO L146 ILogger]: Start isEmpty. Operand 185 states and 189 transitions. [2019-05-23 11:18:09,765 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 181 [2019-05-23 11:18:09,765 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:09,766 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:09,766 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:09,766 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:09,766 INFO L146 ILogger]: Analyzing trace with hash 231766053, now seen corresponding path program 12 times [2019-05-23 11:18:09,767 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:09,767 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:09,767 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:09,768 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:09,768 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:09,788 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:10,058 INFO L146 ILogger]: Checked inductivity of 552 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2019-05-23 11:18:10,059 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:10,059 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 11:18:10,067 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:18:10,344 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-05-23 11:18:10,344 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:10,346 INFO L146 ILogger]: Trace formula consists of 204 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:18:10,349 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:10,539 INFO L146 ILogger]: Checked inductivity of 552 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked. [2019-05-23 11:18:10,559 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:10,560 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 9] total 27 [2019-05-23 11:18:10,560 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:18:10,560 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:18:10,561 INFO L146 ILogger]: CoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:18:10,561 INFO L146 ILogger]: Start difference. First operand 185 states and 189 transitions. Second operand 27 states. [2019-05-23 11:18:11,406 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:11,407 INFO L146 ILogger]: Finished difference Result 361 states and 371 transitions. [2019-05-23 11:18:11,409 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:18:11,409 INFO L146 ILogger]: Start accepts. Automaton has 27 states. Word has length 180 [2019-05-23 11:18:11,409 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:11,410 INFO L146 ILogger]: With dead ends: 361 [2019-05-23 11:18:11,411 INFO L146 ILogger]: Without dead ends: 214 [2019-05-23 11:18:11,412 INFO L146 ILogger]: 0 DeclaredPredicates, 228 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=723, Invalid=2033, Unknown=0, NotChecked=0, Total=2756 [2019-05-23 11:18:11,412 INFO L146 ILogger]: Start minimizeSevpa. Operand 214 states. [2019-05-23 11:18:11,416 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 214 to 202. [2019-05-23 11:18:11,416 INFO L146 ILogger]: Start removeUnreachable. Operand 202 states. [2019-05-23 11:18:11,417 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 202 states to 202 states and 206 transitions. [2019-05-23 11:18:11,417 INFO L146 ILogger]: Start accepts. Automaton has 202 states and 206 transitions. Word has length 180 [2019-05-23 11:18:11,418 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:11,418 INFO L146 ILogger]: Abstraction has 202 states and 206 transitions. [2019-05-23 11:18:11,418 INFO L146 ILogger]: Interpolant automaton has 27 states. [2019-05-23 11:18:11,418 INFO L146 ILogger]: Start isEmpty. Operand 202 states and 206 transitions. [2019-05-23 11:18:11,419 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 198 [2019-05-23 11:18:11,419 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:11,419 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:11,420 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:11,420 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:11,420 INFO L146 ILogger]: Analyzing trace with hash 1572733793, now seen corresponding path program 13 times [2019-05-23 11:18:11,420 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:11,420 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:11,421 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:11,421 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:11,421 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:11,440 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:11,891 INFO L146 ILogger]: Checked inductivity of 676 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2019-05-23 11:18:11,891 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:11,891 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 11:18:11,899 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:18:11,951 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:11,952 INFO L146 ILogger]: Trace formula consists of 297 conjuncts, 13 conjunts are in the unsatisfiable core [2019-05-23 11:18:11,954 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:12,003 INFO L146 ILogger]: Checked inductivity of 676 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2019-05-23 11:18:12,022 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:12,022 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 14] total 26 [2019-05-23 11:18:12,023 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:18:12,023 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:18:12,024 INFO L146 ILogger]: CoverageRelationStatistics Valid=182, Invalid=468, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:18:12,024 INFO L146 ILogger]: Start difference. First operand 202 states and 206 transitions. Second operand 26 states. [2019-05-23 11:18:12,861 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:12,861 INFO L146 ILogger]: Finished difference Result 380 states and 389 transitions. [2019-05-23 11:18:12,861 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-05-23 11:18:12,861 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 197 [2019-05-23 11:18:12,862 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:12,864 INFO L146 ILogger]: With dead ends: 380 [2019-05-23 11:18:12,864 INFO L146 ILogger]: Without dead ends: 219 [2019-05-23 11:18:12,865 INFO L146 ILogger]: 0 DeclaredPredicates, 243 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=733, Invalid=1523, Unknown=0, NotChecked=0, Total=2256 [2019-05-23 11:18:12,866 INFO L146 ILogger]: Start minimizeSevpa. Operand 219 states. [2019-05-23 11:18:12,870 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 219 to 212. [2019-05-23 11:18:12,870 INFO L146 ILogger]: Start removeUnreachable. Operand 212 states. [2019-05-23 11:18:12,871 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 212 states to 212 states and 216 transitions. [2019-05-23 11:18:12,871 INFO L146 ILogger]: Start accepts. Automaton has 212 states and 216 transitions. Word has length 197 [2019-05-23 11:18:12,871 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:12,871 INFO L146 ILogger]: Abstraction has 212 states and 216 transitions. [2019-05-23 11:18:12,871 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:18:12,871 INFO L146 ILogger]: Start isEmpty. Operand 212 states and 216 transitions. [2019-05-23 11:18:12,872 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 208 [2019-05-23 11:18:12,872 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:12,873 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:12,873 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:12,873 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:12,873 INFO L146 ILogger]: Analyzing trace with hash -1459109184, now seen corresponding path program 14 times [2019-05-23 11:18:12,873 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:12,873 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:12,874 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:12,874 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:18:12,874 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:12,893 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:13,896 INFO L146 ILogger]: Checked inductivity of 788 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2019-05-23 11:18:13,897 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:13,897 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 11:18:13,905 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:18:13,972 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:18:13,972 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:13,974 INFO L146 ILogger]: Trace formula consists of 311 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:18:13,977 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:14,046 INFO L146 ILogger]: Checked inductivity of 788 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2019-05-23 11:18:14,065 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:14,065 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 15] total 28 [2019-05-23 11:18:14,065 INFO L146 ILogger]: Interpolant automaton has 28 states [2019-05-23 11:18:14,065 INFO L146 ILogger]: Constructing interpolant automaton starting with 28 interpolants. [2019-05-23 11:18:14,066 INFO L146 ILogger]: CoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:18:14,066 INFO L146 ILogger]: Start difference. First operand 212 states and 216 transitions. Second operand 28 states. [2019-05-23 11:18:16,246 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:16,246 INFO L146 ILogger]: Finished difference Result 397 states and 406 transitions. [2019-05-23 11:18:16,246 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:18:16,247 INFO L146 ILogger]: Start accepts. Automaton has 28 states. Word has length 207 [2019-05-23 11:18:16,247 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:16,248 INFO L146 ILogger]: With dead ends: 397 [2019-05-23 11:18:16,249 INFO L146 ILogger]: Without dead ends: 229 [2019-05-23 11:18:16,250 INFO L146 ILogger]: 0 DeclaredPredicates, 257 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=859, Invalid=1793, Unknown=0, NotChecked=0, Total=2652 [2019-05-23 11:18:16,251 INFO L146 ILogger]: Start minimizeSevpa. Operand 229 states. [2019-05-23 11:18:16,254 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 229 to 222. [2019-05-23 11:18:16,254 INFO L146 ILogger]: Start removeUnreachable. Operand 222 states. [2019-05-23 11:18:16,255 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 222 states to 222 states and 226 transitions. [2019-05-23 11:18:16,255 INFO L146 ILogger]: Start accepts. Automaton has 222 states and 226 transitions. Word has length 207 [2019-05-23 11:18:16,255 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:16,256 INFO L146 ILogger]: Abstraction has 222 states and 226 transitions. [2019-05-23 11:18:16,256 INFO L146 ILogger]: Interpolant automaton has 28 states. [2019-05-23 11:18:16,256 INFO L146 ILogger]: Start isEmpty. Operand 222 states and 226 transitions. [2019-05-23 11:18:16,257 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 218 [2019-05-23 11:18:16,257 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:16,257 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:16,257 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:16,258 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:16,258 INFO L146 ILogger]: Analyzing trace with hash -356346815, now seen corresponding path program 15 times [2019-05-23 11:18:16,258 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:16,258 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:16,259 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:16,259 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:16,259 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:16,278 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:16,784 INFO L146 ILogger]: Checked inductivity of 910 backedges. 0 proven. 559 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2019-05-23 11:18:16,784 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:16,784 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 11:18:16,793 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:18:16,936 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-05-23 11:18:16,936 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:16,938 INFO L146 ILogger]: Trace formula consists of 199 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:18:16,941 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:17,080 INFO L146 ILogger]: Checked inductivity of 910 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 864 trivial. 0 not checked. [2019-05-23 11:18:17,099 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:17,099 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 11] total 34 [2019-05-23 11:18:17,099 INFO L146 ILogger]: Interpolant automaton has 34 states [2019-05-23 11:18:17,100 INFO L146 ILogger]: Constructing interpolant automaton starting with 34 interpolants. [2019-05-23 11:18:17,100 INFO L146 ILogger]: CoverageRelationStatistics Valid=254, Invalid=868, Unknown=0, NotChecked=0, Total=1122 [2019-05-23 11:18:17,101 INFO L146 ILogger]: Start difference. First operand 222 states and 226 transitions. Second operand 34 states. [2019-05-23 11:18:18,436 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:18,437 INFO L146 ILogger]: Finished difference Result 426 states and 436 transitions. [2019-05-23 11:18:18,437 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2019-05-23 11:18:18,437 INFO L146 ILogger]: Start accepts. Automaton has 34 states. Word has length 217 [2019-05-23 11:18:18,437 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:18,439 INFO L146 ILogger]: With dead ends: 426 [2019-05-23 11:18:18,439 INFO L146 ILogger]: Without dead ends: 251 [2019-05-23 11:18:18,441 INFO L146 ILogger]: 0 DeclaredPredicates, 279 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1170, Invalid=3386, Unknown=0, NotChecked=0, Total=4556 [2019-05-23 11:18:18,441 INFO L146 ILogger]: Start minimizeSevpa. Operand 251 states. [2019-05-23 11:18:18,444 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 251 to 239. [2019-05-23 11:18:18,444 INFO L146 ILogger]: Start removeUnreachable. Operand 239 states. [2019-05-23 11:18:18,445 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 239 states to 239 states and 243 transitions. [2019-05-23 11:18:18,445 INFO L146 ILogger]: Start accepts. Automaton has 239 states and 243 transitions. Word has length 217 [2019-05-23 11:18:18,446 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:18,446 INFO L146 ILogger]: Abstraction has 239 states and 243 transitions. [2019-05-23 11:18:18,446 INFO L146 ILogger]: Interpolant automaton has 34 states. [2019-05-23 11:18:18,446 INFO L146 ILogger]: Start isEmpty. Operand 239 states and 243 transitions. [2019-05-23 11:18:18,447 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 235 [2019-05-23 11:18:18,447 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:18,448 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:18,448 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:18,448 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:18,448 INFO L146 ILogger]: Analyzing trace with hash -947578235, now seen corresponding path program 16 times [2019-05-23 11:18:18,448 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:18,449 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:18,449 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:18,449 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:18,450 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:18,471 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:18,893 INFO L146 ILogger]: Checked inductivity of 1071 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2019-05-23 11:18:18,894 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:18,894 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 11:18:18,903 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:18:19,080 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:18:19,081 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:19,083 INFO L146 ILogger]: Trace formula consists of 349 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:18:19,085 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:19,155 INFO L146 ILogger]: Checked inductivity of 1071 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2019-05-23 11:18:19,176 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:19,176 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 17] total 32 [2019-05-23 11:18:19,177 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:18:19,177 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:18:19,177 INFO L146 ILogger]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:18:19,178 INFO L146 ILogger]: Start difference. First operand 239 states and 243 transitions. Second operand 32 states. [2019-05-23 11:18:20,164 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:20,165 INFO L146 ILogger]: Finished difference Result 445 states and 454 transitions. [2019-05-23 11:18:20,165 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-05-23 11:18:20,165 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 234 [2019-05-23 11:18:20,166 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:20,166 INFO L146 ILogger]: With dead ends: 445 [2019-05-23 11:18:20,166 INFO L146 ILogger]: Without dead ends: 256 [2019-05-23 11:18:20,168 INFO L146 ILogger]: 0 DeclaredPredicates, 292 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1141, Invalid=2399, Unknown=0, NotChecked=0, Total=3540 [2019-05-23 11:18:20,168 INFO L146 ILogger]: Start minimizeSevpa. Operand 256 states. [2019-05-23 11:18:20,172 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 256 to 249. [2019-05-23 11:18:20,172 INFO L146 ILogger]: Start removeUnreachable. Operand 249 states. [2019-05-23 11:18:20,173 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 249 states to 249 states and 253 transitions. [2019-05-23 11:18:20,173 INFO L146 ILogger]: Start accepts. Automaton has 249 states and 253 transitions. Word has length 234 [2019-05-23 11:18:20,173 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:20,174 INFO L146 ILogger]: Abstraction has 249 states and 253 transitions. [2019-05-23 11:18:20,174 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:18:20,174 INFO L146 ILogger]: Start isEmpty. Operand 249 states and 253 transitions. [2019-05-23 11:18:20,174 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 245 [2019-05-23 11:18:20,175 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:20,175 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:20,175 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:20,175 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:20,175 INFO L146 ILogger]: Analyzing trace with hash 1047042980, now seen corresponding path program 17 times [2019-05-23 11:18:20,175 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:20,175 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:20,176 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:20,176 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:20,176 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:20,202 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:20,747 INFO L146 ILogger]: Checked inductivity of 1213 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 463 trivial. 0 not checked. [2019-05-23 11:18:20,747 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:20,747 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 11:18:20,756 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1