java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/array-examples/standard_two_index_03_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:20:13,232 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:20:13,240 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:20:13,251 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:20:13,251 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:20:13,252 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:20:13,254 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:20:13,256 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:20:13,259 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:20:13,263 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:20:13,264 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:20:13,265 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:20:13,268 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:20:13,269 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:20:13,270 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:20:13,272 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:20:13,274 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:20:13,276 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:20:13,281 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:20:13,282 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:20:13,285 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:20:13,289 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:20:13,291 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:20:13,291 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:20:13,291 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:20:13,294 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:20:13,294 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:20:13,295 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:20:13,295 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:20:13,296 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:20:13,297 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:20:13,297 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:20:13,300 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:20:13,301 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:20:13,302 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:20:13,302 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:20:13,302 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:20:13,303 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:20:13,304 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:20:13,305 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:20:13,327 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:20:13,327 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:20:13,330 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:20:13,330 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:20:13,330 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:20:13,331 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:20:13,331 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:20:13,331 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:20:13,331 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:20:13,331 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:20:13,332 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:20:13,332 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:20:13,332 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:20:13,332 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:20:13,332 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:20:13,333 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:20:13,333 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:20:13,333 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:20:13,333 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:20:13,333 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:20:13,334 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:20:13,334 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:20:13,334 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:20:13,334 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:20:13,335 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:20:13,335 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:20:13,335 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:20:13,335 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:20:13,335 INFO L146 ILogger]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Command for external solver -> z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement [2019-05-23 11:20:13,371 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:20:13,385 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:20:13,393 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:20:13,394 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:20:13,395 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:20:13,396 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_two_index_03_true-unreach-call.i [2019-05-23 11:20:13,466 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f659d571/b47e7a6f18ec43cd915d88cbc31f9289/FLAG761d6be1c [2019-05-23 11:20:13,887 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:20:13,887 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_two_index_03_true-unreach-call.i [2019-05-23 11:20:13,894 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f659d571/b47e7a6f18ec43cd915d88cbc31f9289/FLAG761d6be1c [2019-05-23 11:20:14,261 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f659d571/b47e7a6f18ec43cd915d88cbc31f9289 [2019-05-23 11:20:14,270 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:20:14,271 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:20:14,272 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:20:14,272 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:20:14,276 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:20:14,278 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:20:14" (1/1) ... [2019-05-23 11:20:14,281 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@200565a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:14, skipping insertion in model container [2019-05-23 11:20:14,281 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:20:14" (1/1) ... [2019-05-23 11:20:14,288 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:20:14,307 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:20:14,504 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:20:14,509 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:20:14,539 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:20:14,564 INFO L146 ILogger]: Completed translation [2019-05-23 11:20:14,565 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:14 WrapperNode [2019-05-23 11:20:14,565 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:20:14,566 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:20:14,566 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:20:14,567 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:20:14,575 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:14" (1/1) ... [2019-05-23 11:20:14,583 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:14" (1/1) ... [2019-05-23 11:20:14,602 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:20:14,602 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:20:14,602 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:20:14,603 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:20:14,610 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:14" (1/1) ... [2019-05-23 11:20:14,610 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:14" (1/1) ... [2019-05-23 11:20:14,612 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:14" (1/1) ... [2019-05-23 11:20:14,612 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:14" (1/1) ... [2019-05-23 11:20:14,617 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:14" (1/1) ... [2019-05-23 11:20:14,622 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:14" (1/1) ... [2019-05-23 11:20:14,623 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:14" (1/1) ... [2019-05-23 11:20:14,625 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:20:14,626 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:20:14,626 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:20:14,626 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:20:14,627 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 [2019-05-23 11:20:14,767 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:20:14,768 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:20:14,768 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:20:14,768 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:20:14,768 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:20:14,768 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:20:15,205 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:20:15,206 INFO L146 ILogger]: Removed 9 assume(true) statements. [2019-05-23 11:20:15,207 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:20:15 BoogieIcfgContainer [2019-05-23 11:20:15,207 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:20:15,208 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:20:15,208 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:20:15,211 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:20:15,211 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:20:14" (1/3) ... [2019-05-23 11:20:15,212 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@711b9efd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:20:15, skipping insertion in model container [2019-05-23 11:20:15,212 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:14" (2/3) ... [2019-05-23 11:20:15,213 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@711b9efd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:20:15, skipping insertion in model container [2019-05-23 11:20:15,213 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:20:15" (3/3) ... [2019-05-23 11:20:15,215 INFO L146 ILogger]: Analyzing ICFG standard_two_index_03_true-unreach-call.i [2019-05-23 11:20:15,224 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:20:15,232 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:20:15,249 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:20:15,280 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:20:15,281 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:20:15,281 INFO L146 ILogger]: Hoare is true [2019-05-23 11:20:15,281 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:20:15,281 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:20:15,281 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:20:15,281 INFO L146 ILogger]: Difference is false [2019-05-23 11:20:15,282 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:20:15,282 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:20:15,298 INFO L146 ILogger]: Start isEmpty. Operand 43 states. [2019-05-23 11:20:15,305 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 22 [2019-05-23 11:20:15,305 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:15,306 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:15,308 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:15,315 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:15,316 INFO L146 ILogger]: Analyzing trace with hash -1541380129, now seen corresponding path program 1 times [2019-05-23 11:20:15,317 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:15,318 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:15,355 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:15,356 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:15,356 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:15,400 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:15,448 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:15,451 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:20:15,451 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:20:15,454 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:20:15,464 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:20:15,465 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:20:15,467 INFO L146 ILogger]: Start difference. First operand 43 states. Second operand 2 states. [2019-05-23 11:20:15,488 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:15,488 INFO L146 ILogger]: Finished difference Result 73 states and 83 transitions. [2019-05-23 11:20:15,488 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:20:15,491 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 21 [2019-05-23 11:20:15,491 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:15,501 INFO L146 ILogger]: With dead ends: 73 [2019-05-23 11:20:15,505 INFO L146 ILogger]: Without dead ends: 35 [2019-05-23 11:20:15,509 INFO L146 ILogger]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:20:15,528 INFO L146 ILogger]: Start minimizeSevpa. Operand 35 states. [2019-05-23 11:20:15,543 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-05-23 11:20:15,545 INFO L146 ILogger]: Start removeUnreachable. Operand 35 states. [2019-05-23 11:20:15,546 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2019-05-23 11:20:15,547 INFO L146 ILogger]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 21 [2019-05-23 11:20:15,548 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:15,548 INFO L146 ILogger]: Abstraction has 35 states and 37 transitions. [2019-05-23 11:20:15,548 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:20:15,548 INFO L146 ILogger]: Start isEmpty. Operand 35 states and 37 transitions. [2019-05-23 11:20:15,549 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 22 [2019-05-23 11:20:15,549 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:15,550 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:15,550 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:15,550 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:15,551 INFO L146 ILogger]: Analyzing trace with hash 805843927, now seen corresponding path program 1 times [2019-05-23 11:20:15,551 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:15,551 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:15,552 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:15,553 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:15,553 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:15,567 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:15,607 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:15,610 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:20:15,610 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:20:15,612 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:20:15,612 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:20:15,613 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:20:15,616 INFO L146 ILogger]: Start difference. First operand 35 states and 37 transitions. Second operand 3 states. [2019-05-23 11:20:15,698 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:15,698 INFO L146 ILogger]: Finished difference Result 62 states and 66 transitions. [2019-05-23 11:20:15,699 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:20:15,699 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 21 [2019-05-23 11:20:15,699 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:15,700 INFO L146 ILogger]: With dead ends: 62 [2019-05-23 11:20:15,700 INFO L146 ILogger]: Without dead ends: 40 [2019-05-23 11:20:15,702 INFO L146 ILogger]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:20:15,702 INFO L146 ILogger]: Start minimizeSevpa. Operand 40 states. [2019-05-23 11:20:15,706 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 40 to 36. [2019-05-23 11:20:15,707 INFO L146 ILogger]: Start removeUnreachable. Operand 36 states. [2019-05-23 11:20:15,708 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2019-05-23 11:20:15,708 INFO L146 ILogger]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 21 [2019-05-23 11:20:15,708 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:15,708 INFO L146 ILogger]: Abstraction has 36 states and 38 transitions. [2019-05-23 11:20:15,708 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:20:15,709 INFO L146 ILogger]: Start isEmpty. Operand 36 states and 38 transitions. [2019-05-23 11:20:15,710 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 27 [2019-05-23 11:20:15,710 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:15,710 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] [2019-05-23 11:20:15,710 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:15,710 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:15,711 INFO L146 ILogger]: Analyzing trace with hash 1928914446, now seen corresponding path program 1 times [2019-05-23 11:20:15,711 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:15,711 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:15,712 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:15,712 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:15,712 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:15,730 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:15,775 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:20:15,775 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:20:15,775 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:20:15,776 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:20:15,776 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:20:15,777 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:20:15,777 INFO L146 ILogger]: Start difference. First operand 36 states and 38 transitions. Second operand 3 states. [2019-05-23 11:20:15,893 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:15,893 INFO L146 ILogger]: Finished difference Result 68 states and 71 transitions. [2019-05-23 11:20:15,894 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:20:15,894 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 26 [2019-05-23 11:20:15,894 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:15,895 INFO L146 ILogger]: With dead ends: 68 [2019-05-23 11:20:15,895 INFO L146 ILogger]: Without dead ends: 53 [2019-05-23 11:20:15,896 INFO L146 ILogger]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:20:15,897 INFO L146 ILogger]: Start minimizeSevpa. Operand 53 states. [2019-05-23 11:20:15,901 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 53 to 37. [2019-05-23 11:20:15,901 INFO L146 ILogger]: Start removeUnreachable. Operand 37 states. [2019-05-23 11:20:15,902 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2019-05-23 11:20:15,902 INFO L146 ILogger]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 26 [2019-05-23 11:20:15,903 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:15,903 INFO L146 ILogger]: Abstraction has 37 states and 39 transitions. [2019-05-23 11:20:15,903 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:20:15,903 INFO L146 ILogger]: Start isEmpty. Operand 37 states and 39 transitions. [2019-05-23 11:20:15,904 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 33 [2019-05-23 11:20:15,904 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:15,905 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:15,905 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:15,905 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:15,906 INFO L146 ILogger]: Analyzing trace with hash 876855147, now seen corresponding path program 1 times [2019-05-23 11:20:15,906 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:15,906 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:15,907 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:15,907 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:15,907 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:15,931 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:16,024 INFO L146 ILogger]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:20:16,024 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:16,025 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:16,043 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:16,085 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:16,087 INFO L146 ILogger]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:20:16,093 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:16,207 INFO L146 ILogger]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:20:16,234 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:16,235 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-05-23 11:20:16,235 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:20:16,236 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:20:16,236 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:20:16,236 INFO L146 ILogger]: Start difference. First operand 37 states and 39 transitions. Second operand 5 states. [2019-05-23 11:20:16,344 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:16,344 INFO L146 ILogger]: Finished difference Result 85 states and 89 transitions. [2019-05-23 11:20:16,345 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:20:16,345 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 32 [2019-05-23 11:20:16,345 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:16,346 INFO L146 ILogger]: With dead ends: 85 [2019-05-23 11:20:16,346 INFO L146 ILogger]: Without dead ends: 62 [2019-05-23 11:20:16,346 INFO L146 ILogger]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:20:16,347 INFO L146 ILogger]: Start minimizeSevpa. Operand 62 states. [2019-05-23 11:20:16,351 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 62 to 42. [2019-05-23 11:20:16,351 INFO L146 ILogger]: Start removeUnreachable. Operand 42 states. [2019-05-23 11:20:16,352 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2019-05-23 11:20:16,352 INFO L146 ILogger]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 32 [2019-05-23 11:20:16,352 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:16,353 INFO L146 ILogger]: Abstraction has 42 states and 44 transitions. [2019-05-23 11:20:16,353 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:20:16,353 INFO L146 ILogger]: Start isEmpty. Operand 42 states and 44 transitions. [2019-05-23 11:20:16,354 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 38 [2019-05-23 11:20:16,354 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:16,354 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:16,354 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:16,355 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:16,355 INFO L146 ILogger]: Analyzing trace with hash -411413292, now seen corresponding path program 2 times [2019-05-23 11:20:16,355 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:16,355 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:16,356 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:16,356 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:16,357 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:16,378 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:16,501 INFO L146 ILogger]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:20:16,502 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:16,502 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:16,519 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:16,548 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:16,548 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:16,549 INFO L146 ILogger]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:20:16,551 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:16,599 INFO L146 ILogger]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:20:16,625 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:16,626 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-05-23 11:20:16,626 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:20:16,627 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:20:16,627 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:20:16,627 INFO L146 ILogger]: Start difference. First operand 42 states and 44 transitions. Second operand 6 states. [2019-05-23 11:20:16,898 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:16,899 INFO L146 ILogger]: Finished difference Result 90 states and 94 transitions. [2019-05-23 11:20:16,903 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:20:16,903 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 37 [2019-05-23 11:20:16,903 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:16,904 INFO L146 ILogger]: With dead ends: 90 [2019-05-23 11:20:16,904 INFO L146 ILogger]: Without dead ends: 67 [2019-05-23 11:20:16,905 INFO L146 ILogger]: 0 DeclaredPredicates, 41 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:20:16,905 INFO L146 ILogger]: Start minimizeSevpa. Operand 67 states. [2019-05-23 11:20:16,910 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 67 to 47. [2019-05-23 11:20:16,910 INFO L146 ILogger]: Start removeUnreachable. Operand 47 states. [2019-05-23 11:20:16,911 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2019-05-23 11:20:16,912 INFO L146 ILogger]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 37 [2019-05-23 11:20:16,912 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:16,912 INFO L146 ILogger]: Abstraction has 47 states and 49 transitions. [2019-05-23 11:20:16,912 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:20:16,912 INFO L146 ILogger]: Start isEmpty. Operand 47 states and 49 transitions. [2019-05-23 11:20:16,913 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 43 [2019-05-23 11:20:16,913 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:16,914 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:16,914 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:16,914 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:16,914 INFO L146 ILogger]: Analyzing trace with hash -1153058549, now seen corresponding path program 3 times [2019-05-23 11:20:16,915 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:16,915 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:16,916 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:16,916 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:16,916 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:16,933 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:17,032 INFO L146 ILogger]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:20:17,033 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:17,033 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:17,043 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:17,063 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:20:17,063 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:17,066 INFO L146 ILogger]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:20:17,068 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:17,105 INFO L146 ILogger]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-05-23 11:20:17,124 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:17,124 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 7 [2019-05-23 11:20:17,125 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:20:17,125 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:20:17,125 INFO L146 ILogger]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:20:17,125 INFO L146 ILogger]: Start difference. First operand 47 states and 49 transitions. Second operand 7 states. [2019-05-23 11:20:17,414 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:17,414 INFO L146 ILogger]: Finished difference Result 119 states and 125 transitions. [2019-05-23 11:20:17,415 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:20:17,415 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 42 [2019-05-23 11:20:17,416 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:17,417 INFO L146 ILogger]: With dead ends: 119 [2019-05-23 11:20:17,417 INFO L146 ILogger]: Without dead ends: 96 [2019-05-23 11:20:17,417 INFO L146 ILogger]: 0 DeclaredPredicates, 47 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:20:17,419 INFO L146 ILogger]: Start minimizeSevpa. Operand 96 states. [2019-05-23 11:20:17,429 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 96 to 63. [2019-05-23 11:20:17,433 INFO L146 ILogger]: Start removeUnreachable. Operand 63 states. [2019-05-23 11:20:17,434 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2019-05-23 11:20:17,434 INFO L146 ILogger]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 42 [2019-05-23 11:20:17,435 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:17,437 INFO L146 ILogger]: Abstraction has 63 states and 65 transitions. [2019-05-23 11:20:17,437 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:20:17,437 INFO L146 ILogger]: Start isEmpty. Operand 63 states and 65 transitions. [2019-05-23 11:20:17,438 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 59 [2019-05-23 11:20:17,439 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:17,439 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:17,439 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:17,439 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:17,439 INFO L146 ILogger]: Analyzing trace with hash 1070488136, now seen corresponding path program 4 times [2019-05-23 11:20:17,440 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:17,443 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:17,444 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:17,444 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:17,444 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:17,482 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:17,619 INFO L146 ILogger]: Checked inductivity of 63 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-05-23 11:20:17,619 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:17,619 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:17,633 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:20:17,663 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:20:17,663 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:17,664 INFO L146 ILogger]: Trace formula consists of 103 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:20:17,667 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:17,694 INFO L146 ILogger]: Checked inductivity of 63 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-05-23 11:20:17,714 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:17,714 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2019-05-23 11:20:17,714 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:20:17,715 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:20:17,715 INFO L146 ILogger]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:20:17,715 INFO L146 ILogger]: Start difference. First operand 63 states and 65 transitions. Second operand 9 states. [2019-05-23 11:20:17,864 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:17,865 INFO L146 ILogger]: Finished difference Result 130 states and 134 transitions. [2019-05-23 11:20:17,865 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:20:17,866 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 58 [2019-05-23 11:20:17,866 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:17,868 INFO L146 ILogger]: With dead ends: 130 [2019-05-23 11:20:17,868 INFO L146 ILogger]: Without dead ends: 101 [2019-05-23 11:20:17,869 INFO L146 ILogger]: 0 DeclaredPredicates, 65 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:20:17,870 INFO L146 ILogger]: Start minimizeSevpa. Operand 101 states. [2019-05-23 11:20:17,875 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 101 to 68. [2019-05-23 11:20:17,875 INFO L146 ILogger]: Start removeUnreachable. Operand 68 states. [2019-05-23 11:20:17,876 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2019-05-23 11:20:17,877 INFO L146 ILogger]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 58 [2019-05-23 11:20:17,877 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:17,877 INFO L146 ILogger]: Abstraction has 68 states and 70 transitions. [2019-05-23 11:20:17,877 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:20:17,877 INFO L146 ILogger]: Start isEmpty. Operand 68 states and 70 transitions. [2019-05-23 11:20:17,878 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 64 [2019-05-23 11:20:17,878 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:17,878 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:17,879 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:17,879 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:17,879 INFO L146 ILogger]: Analyzing trace with hash 1820626545, now seen corresponding path program 5 times [2019-05-23 11:20:17,879 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:17,879 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:17,880 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:17,880 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:17,880 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:17,899 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:18,065 INFO L146 ILogger]: Checked inductivity of 89 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-05-23 11:20:18,066 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:18,066 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:18,078 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:20:18,154 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-05-23 11:20:18,155 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:18,156 INFO L146 ILogger]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:20:18,159 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:18,206 INFO L146 ILogger]: Checked inductivity of 89 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:20:18,225 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:18,225 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 10 [2019-05-23 11:20:18,226 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:20:18,226 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:20:18,226 INFO L146 ILogger]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:20:18,226 INFO L146 ILogger]: Start difference. First operand 68 states and 70 transitions. Second operand 10 states. [2019-05-23 11:20:18,671 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:18,672 INFO L146 ILogger]: Finished difference Result 159 states and 165 transitions. [2019-05-23 11:20:18,672 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-05-23 11:20:18,672 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 63 [2019-05-23 11:20:18,673 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:18,674 INFO L146 ILogger]: With dead ends: 159 [2019-05-23 11:20:18,675 INFO L146 ILogger]: Without dead ends: 130 [2019-05-23 11:20:18,676 INFO L146 ILogger]: 0 DeclaredPredicates, 71 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:20:18,677 INFO L146 ILogger]: Start minimizeSevpa. Operand 130 states. [2019-05-23 11:20:18,687 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 130 to 84. [2019-05-23 11:20:18,687 INFO L146 ILogger]: Start removeUnreachable. Operand 84 states. [2019-05-23 11:20:18,689 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 84 states to 84 states and 86 transitions. [2019-05-23 11:20:18,689 INFO L146 ILogger]: Start accepts. Automaton has 84 states and 86 transitions. Word has length 63 [2019-05-23 11:20:18,693 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:18,694 INFO L146 ILogger]: Abstraction has 84 states and 86 transitions. [2019-05-23 11:20:18,694 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:20:18,694 INFO L146 ILogger]: Start isEmpty. Operand 84 states and 86 transitions. [2019-05-23 11:20:18,695 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 80 [2019-05-23 11:20:18,695 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:18,696 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:18,696 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:18,696 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:18,696 INFO L146 ILogger]: Analyzing trace with hash -921576466, now seen corresponding path program 6 times [2019-05-23 11:20:18,697 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:18,699 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:18,699 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:18,699 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:18,700 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:18,752 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:19,301 INFO L146 ILogger]: Checked inductivity of 169 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-05-23 11:20:19,301 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:19,302 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:19,317 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:20:19,380 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-05-23 11:20:19,380 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:19,381 INFO L146 ILogger]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:20:19,386 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:19,414 INFO L146 ILogger]: Checked inductivity of 169 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2019-05-23 11:20:19,432 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:19,433 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6] total 12 [2019-05-23 11:20:19,433 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:20:19,433 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:20:19,433 INFO L146 ILogger]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:20:19,434 INFO L146 ILogger]: Start difference. First operand 84 states and 86 transitions. Second operand 12 states. [2019-05-23 11:20:19,636 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:19,636 INFO L146 ILogger]: Finished difference Result 194 states and 200 transitions. [2019-05-23 11:20:19,637 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:20:19,637 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 79 [2019-05-23 11:20:19,637 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:19,638 INFO L146 ILogger]: With dead ends: 194 [2019-05-23 11:20:19,639 INFO L146 ILogger]: Without dead ends: 159 [2019-05-23 11:20:19,640 INFO L146 ILogger]: 0 DeclaredPredicates, 89 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:20:19,640 INFO L146 ILogger]: Start minimizeSevpa. Operand 159 states. [2019-05-23 11:20:19,647 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 159 to 100. [2019-05-23 11:20:19,647 INFO L146 ILogger]: Start removeUnreachable. Operand 100 states. [2019-05-23 11:20:19,648 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 100 states to 100 states and 102 transitions. [2019-05-23 11:20:19,648 INFO L146 ILogger]: Start accepts. Automaton has 100 states and 102 transitions. Word has length 79 [2019-05-23 11:20:19,648 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:19,648 INFO L146 ILogger]: Abstraction has 100 states and 102 transitions. [2019-05-23 11:20:19,648 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:20:19,649 INFO L146 ILogger]: Start isEmpty. Operand 100 states and 102 transitions. [2019-05-23 11:20:19,650 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 96 [2019-05-23 11:20:19,650 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:19,650 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:19,651 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:19,651 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:19,651 INFO L146 ILogger]: Analyzing trace with hash -1619290197, now seen corresponding path program 7 times [2019-05-23 11:20:19,651 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:19,651 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:19,652 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:19,652 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:19,652 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:19,671 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:19,942 INFO L146 ILogger]: Checked inductivity of 275 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-05-23 11:20:19,943 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:19,943 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:19,956 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:19,979 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:19,980 INFO L146 ILogger]: Trace formula consists of 156 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:20:19,983 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:20,015 INFO L146 ILogger]: Checked inductivity of 275 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-05-23 11:20:20,036 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:20,037 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2019-05-23 11:20:20,037 INFO L146 ILogger]: Interpolant automaton has 14 states [2019-05-23 11:20:20,037 INFO L146 ILogger]: Constructing interpolant automaton starting with 14 interpolants. [2019-05-23 11:20:20,038 INFO L146 ILogger]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:20:20,038 INFO L146 ILogger]: Start difference. First operand 100 states and 102 transitions. Second operand 14 states. [2019-05-23 11:20:20,358 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:20,358 INFO L146 ILogger]: Finished difference Result 205 states and 209 transitions. [2019-05-23 11:20:20,358 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:20:20,359 INFO L146 ILogger]: Start accepts. Automaton has 14 states. Word has length 95 [2019-05-23 11:20:20,359 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:20,360 INFO L146 ILogger]: With dead ends: 205 [2019-05-23 11:20:20,360 INFO L146 ILogger]: Without dead ends: 164 [2019-05-23 11:20:20,361 INFO L146 ILogger]: 0 DeclaredPredicates, 107 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:20:20,362 INFO L146 ILogger]: Start minimizeSevpa. Operand 164 states. [2019-05-23 11:20:20,367 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 164 to 105. [2019-05-23 11:20:20,367 INFO L146 ILogger]: Start removeUnreachable. Operand 105 states. [2019-05-23 11:20:20,368 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 105 states to 105 states and 107 transitions. [2019-05-23 11:20:20,368 INFO L146 ILogger]: Start accepts. Automaton has 105 states and 107 transitions. Word has length 95 [2019-05-23 11:20:20,368 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:20,368 INFO L146 ILogger]: Abstraction has 105 states and 107 transitions. [2019-05-23 11:20:20,368 INFO L146 ILogger]: Interpolant automaton has 14 states. [2019-05-23 11:20:20,369 INFO L146 ILogger]: Start isEmpty. Operand 105 states and 107 transitions. [2019-05-23 11:20:20,370 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 101 [2019-05-23 11:20:20,370 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:20,370 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:20,370 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:20,371 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:20,371 INFO L146 ILogger]: Analyzing trace with hash -1433339614, now seen corresponding path program 8 times [2019-05-23 11:20:20,371 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:20,371 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:20,372 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:20,372 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:20,372 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:20,390 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:20,628 INFO L146 ILogger]: Checked inductivity of 326 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-05-23 11:20:20,629 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:20,629 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:20,640 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:20,666 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:20,666 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:20,667 INFO L146 ILogger]: Trace formula consists of 163 conjuncts, 13 conjunts are in the unsatisfiable core [2019-05-23 11:20:20,670 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:20,702 INFO L146 ILogger]: Checked inductivity of 326 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-05-23 11:20:20,721 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:20,721 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2019-05-23 11:20:20,722 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:20:20,722 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:20:20,722 INFO L146 ILogger]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:20:20,722 INFO L146 ILogger]: Start difference. First operand 105 states and 107 transitions. Second operand 15 states. [2019-05-23 11:20:20,898 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:20,899 INFO L146 ILogger]: Finished difference Result 210 states and 214 transitions. [2019-05-23 11:20:20,899 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-05-23 11:20:20,899 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 100 [2019-05-23 11:20:20,900 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:20,901 INFO L146 ILogger]: With dead ends: 210 [2019-05-23 11:20:20,901 INFO L146 ILogger]: Without dead ends: 169 [2019-05-23 11:20:20,902 INFO L146 ILogger]: 0 DeclaredPredicates, 113 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:20:20,903 INFO L146 ILogger]: Start minimizeSevpa. Operand 169 states. [2019-05-23 11:20:20,908 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 169 to 110. [2019-05-23 11:20:20,908 INFO L146 ILogger]: Start removeUnreachable. Operand 110 states. [2019-05-23 11:20:20,909 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 110 states to 110 states and 112 transitions. [2019-05-23 11:20:20,909 INFO L146 ILogger]: Start accepts. Automaton has 110 states and 112 transitions. Word has length 100 [2019-05-23 11:20:20,909 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:20,909 INFO L146 ILogger]: Abstraction has 110 states and 112 transitions. [2019-05-23 11:20:20,909 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:20:20,910 INFO L146 ILogger]: Start isEmpty. Operand 110 states and 112 transitions. [2019-05-23 11:20:20,911 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 106 [2019-05-23 11:20:20,911 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:20,911 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:20,911 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:20,912 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:20,912 INFO L146 ILogger]: Analyzing trace with hash -1782519285, now seen corresponding path program 9 times [2019-05-23 11:20:20,912 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:20,912 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:20,913 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:20,913 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:20,913 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:20,929 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:21,133 INFO L146 ILogger]: Checked inductivity of 382 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-05-23 11:20:21,133 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:21,134 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:21,143 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:21,185 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-05-23 11:20:21,185 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:21,186 INFO L146 ILogger]: Trace formula consists of 114 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:20:21,188 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:21,223 INFO L146 ILogger]: Checked inductivity of 382 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2019-05-23 11:20:21,241 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:21,242 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7] total 16 [2019-05-23 11:20:21,242 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:20:21,242 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:20:21,243 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:20:21,243 INFO L146 ILogger]: Start difference. First operand 110 states and 112 transitions. Second operand 16 states. [2019-05-23 11:20:21,444 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:21,444 INFO L146 ILogger]: Finished difference Result 239 states and 245 transitions. [2019-05-23 11:20:21,445 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-05-23 11:20:21,445 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 105 [2019-05-23 11:20:21,445 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:21,447 INFO L146 ILogger]: With dead ends: 239 [2019-05-23 11:20:21,447 INFO L146 ILogger]: Without dead ends: 198 [2019-05-23 11:20:21,448 INFO L146 ILogger]: 0 DeclaredPredicates, 119 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:20:21,449 INFO L146 ILogger]: Start minimizeSevpa. Operand 198 states. [2019-05-23 11:20:21,453 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 198 to 126. [2019-05-23 11:20:21,453 INFO L146 ILogger]: Start removeUnreachable. Operand 126 states. [2019-05-23 11:20:21,454 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 126 states to 126 states and 128 transitions. [2019-05-23 11:20:21,454 INFO L146 ILogger]: Start accepts. Automaton has 126 states and 128 transitions. Word has length 105 [2019-05-23 11:20:21,455 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:21,455 INFO L146 ILogger]: Abstraction has 126 states and 128 transitions. [2019-05-23 11:20:21,455 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:20:21,455 INFO L146 ILogger]: Start isEmpty. Operand 126 states and 128 transitions. [2019-05-23 11:20:21,456 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 122 [2019-05-23 11:20:21,456 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:21,457 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:21,457 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:21,457 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:21,457 INFO L146 ILogger]: Analyzing trace with hash -1873107960, now seen corresponding path program 10 times [2019-05-23 11:20:21,458 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:21,458 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:21,458 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:21,459 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:21,459 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:21,483 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:21,723 INFO L146 ILogger]: Checked inductivity of 534 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-05-23 11:20:21,724 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:21,724 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 11:20:21,733 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:20:22,095 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:20:22,095 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:22,097 INFO L146 ILogger]: Trace formula consists of 193 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:20:22,099 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:22,147 INFO L146 ILogger]: Checked inductivity of 534 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-05-23 11:20:22,166 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:22,166 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2019-05-23 11:20:22,167 INFO L146 ILogger]: Interpolant automaton has 18 states [2019-05-23 11:20:22,167 INFO L146 ILogger]: Constructing interpolant automaton starting with 18 interpolants. [2019-05-23 11:20:22,167 INFO L146 ILogger]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-05-23 11:20:22,167 INFO L146 ILogger]: Start difference. First operand 126 states and 128 transitions. Second operand 18 states. [2019-05-23 11:20:22,358 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:22,358 INFO L146 ILogger]: Finished difference Result 250 states and 254 transitions. [2019-05-23 11:20:22,358 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-05-23 11:20:22,358 INFO L146 ILogger]: Start accepts. Automaton has 18 states. Word has length 121 [2019-05-23 11:20:22,359 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:22,360 INFO L146 ILogger]: With dead ends: 250 [2019-05-23 11:20:22,361 INFO L146 ILogger]: Without dead ends: 203 [2019-05-23 11:20:22,362 INFO L146 ILogger]: 0 DeclaredPredicates, 137 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-05-23 11:20:22,362 INFO L146 ILogger]: Start minimizeSevpa. Operand 203 states. [2019-05-23 11:20:22,366 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 203 to 131. [2019-05-23 11:20:22,366 INFO L146 ILogger]: Start removeUnreachable. Operand 131 states. [2019-05-23 11:20:22,367 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 131 states to 131 states and 133 transitions. [2019-05-23 11:20:22,367 INFO L146 ILogger]: Start accepts. Automaton has 131 states and 133 transitions. Word has length 121 [2019-05-23 11:20:22,367 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:22,368 INFO L146 ILogger]: Abstraction has 131 states and 133 transitions. [2019-05-23 11:20:22,368 INFO L146 ILogger]: Interpolant automaton has 18 states. [2019-05-23 11:20:22,368 INFO L146 ILogger]: Start isEmpty. Operand 131 states and 133 transitions. [2019-05-23 11:20:22,369 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 127 [2019-05-23 11:20:22,369 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:22,370 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:22,370 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:22,370 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:22,370 INFO L146 ILogger]: Analyzing trace with hash -1757966657, now seen corresponding path program 11 times [2019-05-23 11:20:22,370 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:22,371 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:22,371 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:22,372 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:22,372 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:22,387 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:22,965 INFO L146 ILogger]: Checked inductivity of 605 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-05-23 11:20:22,965 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:22,966 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:22,974 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:20:23,315 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2019-05-23 11:20:23,316 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:23,318 INFO L146 ILogger]: Trace formula consists of 200 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:20:23,320 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:23,370 INFO L146 ILogger]: Checked inductivity of 605 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2019-05-23 11:20:23,390 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:23,390 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 8] total 19 [2019-05-23 11:20:23,390 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:20:23,391 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:20:23,391 INFO L146 ILogger]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:20:23,391 INFO L146 ILogger]: Start difference. First operand 131 states and 133 transitions. Second operand 19 states. [2019-05-23 11:20:23,649 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:23,649 INFO L146 ILogger]: Finished difference Result 279 states and 285 transitions. [2019-05-23 11:20:23,650 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-05-23 11:20:23,650 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 126 [2019-05-23 11:20:23,650 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:23,652 INFO L146 ILogger]: With dead ends: 279 [2019-05-23 11:20:23,652 INFO L146 ILogger]: Without dead ends: 232 [2019-05-23 11:20:23,653 INFO L146 ILogger]: 0 DeclaredPredicates, 143 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:20:23,653 INFO L146 ILogger]: Start minimizeSevpa. Operand 232 states. [2019-05-23 11:20:23,657 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 232 to 147. [2019-05-23 11:20:23,657 INFO L146 ILogger]: Start removeUnreachable. Operand 147 states. [2019-05-23 11:20:23,658 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 147 states to 147 states and 149 transitions. [2019-05-23 11:20:23,658 INFO L146 ILogger]: Start accepts. Automaton has 147 states and 149 transitions. Word has length 126 [2019-05-23 11:20:23,658 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:23,659 INFO L146 ILogger]: Abstraction has 147 states and 149 transitions. [2019-05-23 11:20:23,659 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:20:23,659 INFO L146 ILogger]: Start isEmpty. Operand 147 states and 149 transitions. [2019-05-23 11:20:23,660 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 143 [2019-05-23 11:20:23,660 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:23,661 INFO L146 ILogger]: trace histogram [17, 17, 17, 17, 17, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:23,661 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:23,661 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:23,661 INFO L146 ILogger]: Analyzing trace with hash 1377044732, now seen corresponding path program 12 times [2019-05-23 11:20:23,661 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:23,662 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:23,662 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:23,662 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:23,663 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:23,679 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:24,105 INFO L146 ILogger]: Checked inductivity of 793 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:20:24,105 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:24,105 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:24,114 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:20:24,711 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-05-23 11:20:24,711 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:24,713 INFO L146 ILogger]: Trace formula consists of 188 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:20:24,715 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:24,762 INFO L146 ILogger]: Checked inductivity of 793 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2019-05-23 11:20:24,781 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:24,781 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 9] total 21 [2019-05-23 11:20:24,781 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:20:24,782 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:20:24,782 INFO L146 ILogger]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:20:24,782 INFO L146 ILogger]: Start difference. First operand 147 states and 149 transitions. Second operand 21 states. [2019-05-23 11:20:25,191 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:25,192 INFO L146 ILogger]: Finished difference Result 314 states and 320 transitions. [2019-05-23 11:20:25,192 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:20:25,192 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 142 [2019-05-23 11:20:25,193 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:25,195 INFO L146 ILogger]: With dead ends: 314 [2019-05-23 11:20:25,195 INFO L146 ILogger]: Without dead ends: 261 [2019-05-23 11:20:25,195 INFO L146 ILogger]: 0 DeclaredPredicates, 161 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:20:25,196 INFO L146 ILogger]: Start minimizeSevpa. Operand 261 states. [2019-05-23 11:20:25,199 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 261 to 163. [2019-05-23 11:20:25,200 INFO L146 ILogger]: Start removeUnreachable. Operand 163 states. [2019-05-23 11:20:25,200 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 163 states to 163 states and 165 transitions. [2019-05-23 11:20:25,201 INFO L146 ILogger]: Start accepts. Automaton has 163 states and 165 transitions. Word has length 142 [2019-05-23 11:20:25,201 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:25,201 INFO L146 ILogger]: Abstraction has 163 states and 165 transitions. [2019-05-23 11:20:25,201 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:20:25,201 INFO L146 ILogger]: Start isEmpty. Operand 163 states and 165 transitions. [2019-05-23 11:20:25,202 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 159 [2019-05-23 11:20:25,203 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:25,203 INFO L146 ILogger]: trace histogram [19, 19, 19, 19, 19, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:25,203 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:25,203 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:25,204 INFO L146 ILogger]: Analyzing trace with hash 1489101177, now seen corresponding path program 13 times [2019-05-23 11:20:25,204 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:25,204 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:25,205 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:25,205 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:25,205 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:25,222 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:25,851 INFO L146 ILogger]: Checked inductivity of 1007 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-05-23 11:20:25,851 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:25,851 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:25,860 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:25,900 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:25,901 INFO L146 ILogger]: Trace formula consists of 246 conjuncts, 21 conjunts are in the unsatisfiable core [2019-05-23 11:20:25,903 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:25,951 INFO L146 ILogger]: Checked inductivity of 1007 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-05-23 11:20:25,981 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:25,982 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2019-05-23 11:20:25,982 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:20:25,983 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:20:25,983 INFO L146 ILogger]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:20:25,983 INFO L146 ILogger]: Start difference. First operand 163 states and 165 transitions. Second operand 23 states. [2019-05-23 11:20:26,484 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:26,485 INFO L146 ILogger]: Finished difference Result 325 states and 329 transitions. [2019-05-23 11:20:26,485 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-05-23 11:20:26,485 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 158 [2019-05-23 11:20:26,486 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:26,487 INFO L146 ILogger]: With dead ends: 325 [2019-05-23 11:20:26,487 INFO L146 ILogger]: Without dead ends: 266 [2019-05-23 11:20:26,488 INFO L146 ILogger]: 0 DeclaredPredicates, 179 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:20:26,488 INFO L146 ILogger]: Start minimizeSevpa. Operand 266 states. [2019-05-23 11:20:26,492 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 266 to 168. [2019-05-23 11:20:26,492 INFO L146 ILogger]: Start removeUnreachable. Operand 168 states. [2019-05-23 11:20:26,493 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 168 states to 168 states and 170 transitions. [2019-05-23 11:20:26,493 INFO L146 ILogger]: Start accepts. Automaton has 168 states and 170 transitions. Word has length 158 [2019-05-23 11:20:26,494 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:26,494 INFO L146 ILogger]: Abstraction has 168 states and 170 transitions. [2019-05-23 11:20:26,494 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:20:26,494 INFO L146 ILogger]: Start isEmpty. Operand 168 states and 170 transitions. [2019-05-23 11:20:26,496 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 164 [2019-05-23 11:20:26,496 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:26,497 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:26,497 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:26,497 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:26,497 INFO L146 ILogger]: Analyzing trace with hash -1063441118, now seen corresponding path program 14 times [2019-05-23 11:20:26,498 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:26,498 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:26,499 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:26,499 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:26,499 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:26,517 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:27,566 INFO L146 ILogger]: Checked inductivity of 1103 backedges. 0 proven. 970 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-05-23 11:20:27,566 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:27,566 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:27,576 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:27,628 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:27,628 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:27,629 INFO L146 ILogger]: Trace formula consists of 253 conjuncts, 22 conjunts are in the unsatisfiable core [2019-05-23 11:20:27,632 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:27,758 INFO L146 ILogger]: Checked inductivity of 1103 backedges. 0 proven. 970 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-05-23 11:20:27,786 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:27,786 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2019-05-23 11:20:27,786 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:20:27,787 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:20:27,787 INFO L146 ILogger]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:20:27,787 INFO L146 ILogger]: Start difference. First operand 168 states and 170 transitions. Second operand 24 states. [2019-05-23 11:20:28,124 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:28,124 INFO L146 ILogger]: Finished difference Result 330 states and 334 transitions. [2019-05-23 11:20:28,125 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-05-23 11:20:28,125 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 163 [2019-05-23 11:20:28,125 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:28,127 INFO L146 ILogger]: With dead ends: 330 [2019-05-23 11:20:28,127 INFO L146 ILogger]: Without dead ends: 271 [2019-05-23 11:20:28,128 INFO L146 ILogger]: 0 DeclaredPredicates, 185 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:20:28,128 INFO L146 ILogger]: Start minimizeSevpa. Operand 271 states. [2019-05-23 11:20:28,132 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 271 to 173. [2019-05-23 11:20:28,132 INFO L146 ILogger]: Start removeUnreachable. Operand 173 states. [2019-05-23 11:20:28,133 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 173 states to 173 states and 175 transitions. [2019-05-23 11:20:28,133 INFO L146 ILogger]: Start accepts. Automaton has 173 states and 175 transitions. Word has length 163 [2019-05-23 11:20:28,133 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:28,134 INFO L146 ILogger]: Abstraction has 173 states and 175 transitions. [2019-05-23 11:20:28,134 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:20:28,134 INFO L146 ILogger]: Start isEmpty. Operand 173 states and 175 transitions. [2019-05-23 11:20:28,134 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 169 [2019-05-23 11:20:28,135 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:28,135 INFO L146 ILogger]: trace histogram [21, 21, 21, 21, 21, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:28,135 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:28,135 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:28,135 INFO L146 ILogger]: Analyzing trace with hash 628867865, now seen corresponding path program 15 times [2019-05-23 11:20:28,136 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:28,136 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:28,136 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:28,136 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:28,136 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:28,153 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:28,486 INFO L146 ILogger]: Checked inductivity of 1204 backedges. 0 proven. 1071 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-05-23 11:20:28,486 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:28,486 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:28,494 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:28,641 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2019-05-23 11:20:28,641 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:28,642 INFO L146 ILogger]: Trace formula consists of 162 conjuncts, 9 conjunts are in the unsatisfiable core [2019-05-23 11:20:28,645 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:28,723 INFO L146 ILogger]: Checked inductivity of 1204 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 1071 trivial. 0 not checked. [2019-05-23 11:20:28,742 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:28,743 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 10] total 25 [2019-05-23 11:20:28,743 INFO L146 ILogger]: Interpolant automaton has 25 states [2019-05-23 11:20:28,744 INFO L146 ILogger]: Constructing interpolant automaton starting with 25 interpolants. [2019-05-23 11:20:28,744 INFO L146 ILogger]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:20:28,744 INFO L146 ILogger]: Start difference. First operand 173 states and 175 transitions. Second operand 25 states. [2019-05-23 11:20:29,539 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:29,539 INFO L146 ILogger]: Finished difference Result 359 states and 365 transitions. [2019-05-23 11:20:29,542 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-05-23 11:20:29,542 INFO L146 ILogger]: Start accepts. Automaton has 25 states. Word has length 168 [2019-05-23 11:20:29,542 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:29,544 INFO L146 ILogger]: With dead ends: 359 [2019-05-23 11:20:29,544 INFO L146 ILogger]: Without dead ends: 300 [2019-05-23 11:20:29,545 INFO L146 ILogger]: 0 DeclaredPredicates, 191 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:20:29,545 INFO L146 ILogger]: Start minimizeSevpa. Operand 300 states. [2019-05-23 11:20:29,549 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 300 to 189. [2019-05-23 11:20:29,549 INFO L146 ILogger]: Start removeUnreachable. Operand 189 states. [2019-05-23 11:20:29,550 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 189 states to 189 states and 191 transitions. [2019-05-23 11:20:29,550 INFO L146 ILogger]: Start accepts. Automaton has 189 states and 191 transitions. Word has length 168 [2019-05-23 11:20:29,550 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:29,550 INFO L146 ILogger]: Abstraction has 189 states and 191 transitions. [2019-05-23 11:20:29,551 INFO L146 ILogger]: Interpolant automaton has 25 states. [2019-05-23 11:20:29,551 INFO L146 ILogger]: Start isEmpty. Operand 189 states and 191 transitions. [2019-05-23 11:20:29,552 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 185 [2019-05-23 11:20:29,552 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:29,552 INFO L146 ILogger]: trace histogram [23, 23, 23, 23, 23, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:29,552 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:29,552 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:29,553 INFO L146 ILogger]: Analyzing trace with hash 1968441814, now seen corresponding path program 16 times [2019-05-23 11:20:29,553 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:29,553 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:29,553 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:29,554 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:29,554 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:29,572 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:29,962 INFO L146 ILogger]: Checked inductivity of 1464 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-05-23 11:20:29,962 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:29,962 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:29,971 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:20:32,241 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:20:32,241 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:32,244 INFO L146 ILogger]: Trace formula consists of 283 conjuncts, 25 conjunts are in the unsatisfiable core [2019-05-23 11:20:32,247 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:32,301 INFO L146 ILogger]: Checked inductivity of 1464 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-05-23 11:20:32,321 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:32,322 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2019-05-23 11:20:32,322 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:20:32,323 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:20:32,323 INFO L146 ILogger]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:20:32,323 INFO L146 ILogger]: Start difference. First operand 189 states and 191 transitions. Second operand 27 states. [2019-05-23 11:20:32,677 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:32,677 INFO L146 ILogger]: Finished difference Result 370 states and 374 transitions. [2019-05-23 11:20:32,677 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-05-23 11:20:32,678 INFO L146 ILogger]: Start accepts. Automaton has 27 states. Word has length 184 [2019-05-23 11:20:32,678 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:32,679 INFO L146 ILogger]: With dead ends: 370 [2019-05-23 11:20:32,680 INFO L146 ILogger]: Without dead ends: 305 [2019-05-23 11:20:32,681 INFO L146 ILogger]: 0 DeclaredPredicates, 209 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:20:32,681 INFO L146 ILogger]: Start minimizeSevpa. Operand 305 states. [2019-05-23 11:20:32,685 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 305 to 194. [2019-05-23 11:20:32,685 INFO L146 ILogger]: Start removeUnreachable. Operand 194 states. [2019-05-23 11:20:32,686 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 194 states to 194 states and 196 transitions. [2019-05-23 11:20:32,686 INFO L146 ILogger]: Start accepts. Automaton has 194 states and 196 transitions. Word has length 184 [2019-05-23 11:20:32,686 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:32,686 INFO L146 ILogger]: Abstraction has 194 states and 196 transitions. [2019-05-23 11:20:32,686 INFO L146 ILogger]: Interpolant automaton has 27 states. [2019-05-23 11:20:32,686 INFO L146 ILogger]: Start isEmpty. Operand 194 states and 196 transitions. [2019-05-23 11:20:32,687 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 190 [2019-05-23 11:20:32,687 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:32,688 INFO L146 ILogger]: trace histogram [24, 24, 24, 24, 24, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:32,688 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:32,688 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:32,688 INFO L146 ILogger]: Analyzing trace with hash 131834943, now seen corresponding path program 17 times [2019-05-23 11:20:32,688 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:32,689 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:32,689 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:32,689 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:32,690 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:32,709 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:33,286 INFO L146 ILogger]: Checked inductivity of 1580 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-05-23 11:20:33,286 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:33,286 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:33,295 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:20:36,056 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2019-05-23 11:20:36,056 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:36,061 INFO L146 ILogger]: Trace formula consists of 290 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:20:36,063 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:36,147 INFO L146 ILogger]: Checked inductivity of 1580 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2019-05-23 11:20:36,168 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:36,168 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 11] total 28 [2019-05-23 11:20:36,169 INFO L146 ILogger]: Interpolant automaton has 28 states [2019-05-23 11:20:36,169 INFO L146 ILogger]: Constructing interpolant automaton starting with 28 interpolants. [2019-05-23 11:20:36,169 INFO L146 ILogger]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:20:36,169 INFO L146 ILogger]: Start difference. First operand 194 states and 196 transitions. Second operand 28 states. [2019-05-23 11:20:36,448 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:36,449 INFO L146 ILogger]: Finished difference Result 399 states and 405 transitions. [2019-05-23 11:20:36,449 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-05-23 11:20:36,449 INFO L146 ILogger]: Start accepts. Automaton has 28 states. Word has length 189 [2019-05-23 11:20:36,450 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:36,452 INFO L146 ILogger]: With dead ends: 399 [2019-05-23 11:20:36,452 INFO L146 ILogger]: Without dead ends: 334 [2019-05-23 11:20:36,453 INFO L146 ILogger]: 0 DeclaredPredicates, 215 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:20:36,454 INFO L146 ILogger]: Start minimizeSevpa. Operand 334 states. [2019-05-23 11:20:36,458 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 334 to 210. [2019-05-23 11:20:36,458 INFO L146 ILogger]: Start removeUnreachable. Operand 210 states. [2019-05-23 11:20:36,459 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 210 states to 210 states and 212 transitions. [2019-05-23 11:20:36,459 INFO L146 ILogger]: Start accepts. Automaton has 210 states and 212 transitions. Word has length 189 [2019-05-23 11:20:36,459 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:36,459 INFO L146 ILogger]: Abstraction has 210 states and 212 transitions. [2019-05-23 11:20:36,459 INFO L146 ILogger]: Interpolant automaton has 28 states. [2019-05-23 11:20:36,459 INFO L146 ILogger]: Start isEmpty. Operand 210 states and 212 transitions. [2019-05-23 11:20:36,460 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 206 [2019-05-23 11:20:36,460 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:36,461 INFO L146 ILogger]: trace histogram [26, 26, 26, 26, 26, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:36,461 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:36,461 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:36,461 INFO L146 ILogger]: Analyzing trace with hash 1776416572, now seen corresponding path program 18 times [2019-05-23 11:20:36,461 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:36,462 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:36,462 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:36,462 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:36,463 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:36,482 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:36,969 INFO L146 ILogger]: Checked inductivity of 1876 backedges. 0 proven. 1651 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2019-05-23 11:20:36,970 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:36,970 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:36,979 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:20:46,192 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2019-05-23 11:20:46,192 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:46,199 INFO L146 ILogger]: Trace formula consists of 257 conjuncts, 11 conjunts are in the unsatisfiable core [2019-05-23 11:20:46,201 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:46,324 INFO L146 ILogger]: Checked inductivity of 1876 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 1651 trivial. 0 not checked. [2019-05-23 11:20:46,346 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:46,347 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 12] total 30 [2019-05-23 11:20:46,347 INFO L146 ILogger]: Interpolant automaton has 30 states [2019-05-23 11:20:46,347 INFO L146 ILogger]: Constructing interpolant automaton starting with 30 interpolants. [2019-05-23 11:20:46,348 INFO L146 ILogger]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:20:46,348 INFO L146 ILogger]: Start difference. First operand 210 states and 212 transitions. Second operand 30 states. [2019-05-23 11:20:46,807 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:46,807 INFO L146 ILogger]: Finished difference Result 434 states and 440 transitions. [2019-05-23 11:20:46,808 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:20:46,808 INFO L146 ILogger]: Start accepts. Automaton has 30 states. Word has length 205 [2019-05-23 11:20:46,808 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:46,810 INFO L146 ILogger]: With dead ends: 434 [2019-05-23 11:20:46,810 INFO L146 ILogger]: Without dead ends: 363 [2019-05-23 11:20:46,811 INFO L146 ILogger]: 0 DeclaredPredicates, 233 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:20:46,812 INFO L146 ILogger]: Start minimizeSevpa. Operand 363 states. [2019-05-23 11:20:46,816 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 363 to 226. [2019-05-23 11:20:46,817 INFO L146 ILogger]: Start removeUnreachable. Operand 226 states. [2019-05-23 11:20:46,817 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 226 states to 226 states and 228 transitions. [2019-05-23 11:20:46,817 INFO L146 ILogger]: Start accepts. Automaton has 226 states and 228 transitions. Word has length 205 [2019-05-23 11:20:46,818 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:46,818 INFO L146 ILogger]: Abstraction has 226 states and 228 transitions. [2019-05-23 11:20:46,818 INFO L146 ILogger]: Interpolant automaton has 30 states. [2019-05-23 11:20:46,818 INFO L146 ILogger]: Start isEmpty. Operand 226 states and 228 transitions. [2019-05-23 11:20:46,819 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 222 [2019-05-23 11:20:46,819 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:46,819 INFO L146 ILogger]: trace histogram [28, 28, 28, 28, 28, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:46,820 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:46,820 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:46,820 INFO L146 ILogger]: Analyzing trace with hash 337287289, now seen corresponding path program 19 times [2019-05-23 11:20:46,820 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:46,820 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:46,821 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:46,821 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:46,821 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:46,843 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:48,505 INFO L146 ILogger]: Checked inductivity of 2198 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2019-05-23 11:20:48,505 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:48,505 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:48,517 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:48,562 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:48,564 INFO L146 ILogger]: Trace formula consists of 336 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:20:48,567 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:48,663 INFO L146 ILogger]: Checked inductivity of 2198 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2019-05-23 11:20:48,681 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:48,682 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2019-05-23 11:20:48,682 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:20:48,682 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:20:48,683 INFO L146 ILogger]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:20:48,683 INFO L146 ILogger]: Start difference. First operand 226 states and 228 transitions. Second operand 32 states. [2019-05-23 11:20:49,020 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:49,020 INFO L146 ILogger]: Finished difference Result 445 states and 449 transitions. [2019-05-23 11:20:49,028 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:20:49,028 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 221 [2019-05-23 11:20:49,029 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:49,030 INFO L146 ILogger]: With dead ends: 445 [2019-05-23 11:20:49,030 INFO L146 ILogger]: Without dead ends: 368 [2019-05-23 11:20:49,031 INFO L146 ILogger]: 0 DeclaredPredicates, 251 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:20:49,032 INFO L146 ILogger]: Start minimizeSevpa. Operand 368 states. [2019-05-23 11:20:49,035 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 368 to 231. [2019-05-23 11:20:49,035 INFO L146 ILogger]: Start removeUnreachable. Operand 231 states. [2019-05-23 11:20:49,036 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 231 states to 231 states and 233 transitions. [2019-05-23 11:20:49,036 INFO L146 ILogger]: Start accepts. Automaton has 231 states and 233 transitions. Word has length 221 [2019-05-23 11:20:49,036 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:49,037 INFO L146 ILogger]: Abstraction has 231 states and 233 transitions. [2019-05-23 11:20:49,037 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:20:49,037 INFO L146 ILogger]: Start isEmpty. Operand 231 states and 233 transitions. [2019-05-23 11:20:49,038 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 227 [2019-05-23 11:20:49,038 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:49,038 INFO L146 ILogger]: trace histogram [29, 29, 29, 29, 29, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:49,039 INFO L146 ILogger]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:49,039 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:49,039 INFO L146 ILogger]: Analyzing trace with hash -150111312, now seen corresponding path program 20 times [2019-05-23 11:20:49,039 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:49,039 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:49,040 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:49,040 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:49,040 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:49,062 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:50,354 INFO L146 ILogger]: Checked inductivity of 2339 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2019-05-23 11:20:50,354 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:50,354 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:50,365 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:50,423 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:50,423 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:50,425 INFO L146 ILogger]: Trace formula consists of 343 conjuncts, 31 conjunts are in the unsatisfiable core [2019-05-23 11:20:50,428 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:50,572 INFO L146 ILogger]: Checked inductivity of 2339 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2019-05-23 11:20:50,605 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:50,606 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2019-05-23 11:20:50,606 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:20:50,606 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:20:50,607 INFO L146 ILogger]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:20:50,607 INFO L146 ILogger]: Start difference. First operand 231 states and 233 transitions. Second operand 33 states. [2019-05-23 11:20:51,825 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:51,826 INFO L146 ILogger]: Finished difference Result 450 states and 454 transitions. [2019-05-23 11:20:51,826 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-05-23 11:20:51,826 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 226 [2019-05-23 11:20:51,827 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:51,828 INFO L146 ILogger]: With dead ends: 450 [2019-05-23 11:20:51,828 INFO L146 ILogger]: Without dead ends: 373 [2019-05-23 11:20:51,829 INFO L146 ILogger]: 0 DeclaredPredicates, 257 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:20:51,830 INFO L146 ILogger]: Start minimizeSevpa. Operand 373 states. [2019-05-23 11:20:51,834 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 373 to 236. [2019-05-23 11:20:51,834 INFO L146 ILogger]: Start removeUnreachable. Operand 236 states. [2019-05-23 11:20:51,834 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 236 states to 236 states and 238 transitions. [2019-05-23 11:20:51,835 INFO L146 ILogger]: Start accepts. Automaton has 236 states and 238 transitions. Word has length 226 [2019-05-23 11:20:51,835 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:51,835 INFO L146 ILogger]: Abstraction has 236 states and 238 transitions. [2019-05-23 11:20:51,835 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:20:51,835 INFO L146 ILogger]: Start isEmpty. Operand 236 states and 238 transitions. [2019-05-23 11:20:51,836 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 232 [2019-05-23 11:20:51,836 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:51,837 INFO L146 ILogger]: trace histogram [30, 30, 30, 30, 30, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:51,837 INFO L146 ILogger]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:51,837 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:51,837 INFO L146 ILogger]: Analyzing trace with hash -716504359, now seen corresponding path program 21 times [2019-05-23 11:20:51,837 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:51,838 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:51,838 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:51,838 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:51,839 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:51,860 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:53,251 INFO L146 ILogger]: Checked inductivity of 2485 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2019-05-23 11:20:53,251 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:53,252 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:53,262 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:53,859 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2019-05-23 11:20:53,859 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:53,861 INFO L146 ILogger]: Trace formula consists of 210 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:20:53,863 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:53,973 INFO L146 ILogger]: Checked inductivity of 2485 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 2205 trivial. 0 not checked. [2019-05-23 11:20:53,993 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:53,993 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 13] total 34 [2019-05-23 11:20:53,994 INFO L146 ILogger]: Interpolant automaton has 34 states [2019-05-23 11:20:53,994 INFO L146 ILogger]: Constructing interpolant automaton starting with 34 interpolants. [2019-05-23 11:20:53,995 INFO L146 ILogger]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2019-05-23 11:20:53,995 INFO L146 ILogger]: Start difference. First operand 236 states and 238 transitions. Second operand 34 states. [2019-05-23 11:20:54,445 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:54,445 INFO L146 ILogger]: Finished difference Result 479 states and 485 transitions. [2019-05-23 11:20:54,445 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-05-23 11:20:54,445 INFO L146 ILogger]: Start accepts. Automaton has 34 states. Word has length 231 [2019-05-23 11:20:54,446 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:54,448 INFO L146 ILogger]: With dead ends: 479 [2019-05-23 11:20:54,448 INFO L146 ILogger]: Without dead ends: 402 [2019-05-23 11:20:54,449 INFO L146 ILogger]: 0 DeclaredPredicates, 263 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2019-05-23 11:20:54,450 INFO L146 ILogger]: Start minimizeSevpa. Operand 402 states. [2019-05-23 11:20:54,454 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 402 to 252. [2019-05-23 11:20:54,454 INFO L146 ILogger]: Start removeUnreachable. Operand 252 states. [2019-05-23 11:20:54,455 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 252 states to 252 states and 254 transitions. [2019-05-23 11:20:54,455 INFO L146 ILogger]: Start accepts. Automaton has 252 states and 254 transitions. Word has length 231 [2019-05-23 11:20:54,455 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:54,455 INFO L146 ILogger]: Abstraction has 252 states and 254 transitions. [2019-05-23 11:20:54,456 INFO L146 ILogger]: Interpolant automaton has 34 states. [2019-05-23 11:20:54,456 INFO L146 ILogger]: Start isEmpty. Operand 252 states and 254 transitions. [2019-05-23 11:20:54,457 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 248 [2019-05-23 11:20:54,457 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:54,457 INFO L146 ILogger]: trace histogram [32, 32, 32, 32, 32, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:54,457 INFO L146 ILogger]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:54,458 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:54,458 INFO L146 ILogger]: Analyzing trace with hash 686916182, now seen corresponding path program 22 times [2019-05-23 11:20:54,458 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:54,458 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:54,459 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:54,459 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:54,459 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:54,482 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:55,132 INFO L146 ILogger]: Checked inductivity of 2853 backedges. 0 proven. 2512 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2019-05-23 11:20:55,132 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:55,132 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:55,143 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:21:02,243 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:21:02,243 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:02,250 INFO L146 ILogger]: Trace formula consists of 373 conjuncts, 34 conjunts are in the unsatisfiable core [2019-05-23 11:21:02,252 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:02,313 INFO L146 ILogger]: Checked inductivity of 2853 backedges. 0 proven. 2512 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2019-05-23 11:21:02,336 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:02,336 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2019-05-23 11:21:02,337 INFO L146 ILogger]: Interpolant automaton has 36 states [2019-05-23 11:21:02,337 INFO L146 ILogger]: Constructing interpolant automaton starting with 36 interpolants. [2019-05-23 11:21:02,337 INFO L146 ILogger]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:21:02,337 INFO L146 ILogger]: Start difference. First operand 252 states and 254 transitions. Second operand 36 states. [2019-05-23 11:21:02,773 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:02,774 INFO L146 ILogger]: Finished difference Result 490 states and 494 transitions. [2019-05-23 11:21:02,774 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-05-23 11:21:02,774 INFO L146 ILogger]: Start accepts. Automaton has 36 states. Word has length 247 [2019-05-23 11:21:02,775 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:02,776 INFO L146 ILogger]: With dead ends: 490 [2019-05-23 11:21:02,776 INFO L146 ILogger]: Without dead ends: 407 [2019-05-23 11:21:02,777 INFO L146 ILogger]: 0 DeclaredPredicates, 281 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:21:02,777 INFO L146 ILogger]: Start minimizeSevpa. Operand 407 states. [2019-05-23 11:21:02,781 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 407 to 257. [2019-05-23 11:21:02,781 INFO L146 ILogger]: Start removeUnreachable. Operand 257 states. [2019-05-23 11:21:02,782 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 257 states to 257 states and 259 transitions. [2019-05-23 11:21:02,782 INFO L146 ILogger]: Start accepts. Automaton has 257 states and 259 transitions. Word has length 247 [2019-05-23 11:21:02,782 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:02,783 INFO L146 ILogger]: Abstraction has 257 states and 259 transitions. [2019-05-23 11:21:02,783 INFO L146 ILogger]: Interpolant automaton has 36 states. [2019-05-23 11:21:02,783 INFO L146 ILogger]: Start isEmpty. Operand 257 states and 259 transitions. [2019-05-23 11:21:02,784 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 253 [2019-05-23 11:21:02,784 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:02,784 INFO L146 ILogger]: trace histogram [33, 33, 33, 33, 33, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:02,785 INFO L146 ILogger]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:02,785 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:02,785 INFO L146 ILogger]: Analyzing trace with hash -1817624883, now seen corresponding path program 23 times [2019-05-23 11:21:02,785 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:02,785 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:02,786 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:02,786 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:02,786 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:02,808 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:03,438 INFO L146 ILogger]: Checked inductivity of 3014 backedges. 0 proven. 2673 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2019-05-23 11:21:03,439 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:03,439 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:21:03,448 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1