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/sanfoundry_10_true-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:16:31,312 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:16:31,314 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:16:31,325 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:16:31,326 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:16:31,327 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:16:31,328 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:16:31,330 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:16:31,331 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:16:31,332 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:16:31,333 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:16:31,333 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:16:31,334 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:16:31,335 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:16:31,336 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:16:31,337 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:16:31,338 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:16:31,340 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:16:31,342 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:16:31,343 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:16:31,344 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:16:31,345 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:16:31,347 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:16:31,348 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:16:31,348 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:16:31,349 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:16:31,349 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:16:31,350 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:16:31,350 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:16:31,351 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:16:31,352 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:16:31,353 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:16:31,354 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:16:31,354 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:16:31,355 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:16:31,355 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:16:31,355 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:16:31,356 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:16:31,357 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:16:31,357 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:16:31,380 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:16:31,380 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:16:31,385 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:16:31,386 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:16:31,386 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:16:31,386 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:16:31,386 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:16:31,386 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:16:31,387 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:16:31,387 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:16:31,387 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:16:31,387 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:16:31,387 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:16:31,388 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:16:31,389 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:16:31,389 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:16:31,389 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:16:31,390 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:16:31,390 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:16:31,390 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:16:31,390 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:16:31,390 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:16:31,391 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:16:31,391 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:16:31,391 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:16:31,391 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:16:31,392 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:16:31,392 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:16:31,392 INFO L146 ILogger]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Command for external solver -> z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement [2019-05-23 11:16:31,428 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:16:31,439 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:16:31,443 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:16:31,444 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:16:31,445 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:16:31,446 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/sanfoundry_10_true-unreach-call_ground.i [2019-05-23 11:16:31,502 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d87846fc/9691000f8cc7476bb71b4c7dfbb8bc01/FLAGf0a0c0f1e [2019-05-23 11:16:31,925 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:16:31,926 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/sanfoundry_10_true-unreach-call_ground.i [2019-05-23 11:16:31,932 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d87846fc/9691000f8cc7476bb71b4c7dfbb8bc01/FLAGf0a0c0f1e [2019-05-23 11:16:32,308 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d87846fc/9691000f8cc7476bb71b4c7dfbb8bc01 [2019-05-23 11:16:32,318 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:16:32,320 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:16:32,321 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:16:32,322 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:16:32,328 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:16:32,329 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:16:32" (1/1) ... [2019-05-23 11:16:32,332 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42409953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:32, skipping insertion in model container [2019-05-23 11:16:32,333 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:16:32" (1/1) ... [2019-05-23 11:16:32,340 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:16:32,359 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:16:32,599 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:16:32,605 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:16:32,636 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:16:32,663 INFO L146 ILogger]: Completed translation [2019-05-23 11:16:32,663 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:32 WrapperNode [2019-05-23 11:16:32,664 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:16:32,665 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:16:32,665 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:16:32,665 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:16:32,675 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:32" (1/1) ... [2019-05-23 11:16:32,689 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:32" (1/1) ... [2019-05-23 11:16:32,715 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:16:32,716 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:16:32,716 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:16:32,716 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:16:32,728 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:32" (1/1) ... [2019-05-23 11:16:32,728 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:32" (1/1) ... [2019-05-23 11:16:32,730 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:32" (1/1) ... [2019-05-23 11:16:32,731 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:32" (1/1) ... [2019-05-23 11:16:32,738 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:32" (1/1) ... [2019-05-23 11:16:32,745 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:32" (1/1) ... [2019-05-23 11:16:32,746 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:32" (1/1) ... [2019-05-23 11:16:32,749 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:16:32,749 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:16:32,749 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:16:32,750 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:16:32,751 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 [2019-05-23 11:16:32,904 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:16:32,904 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:16:32,904 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:16:32,905 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:16:32,905 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:16:32,905 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:16:33,408 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:16:33,408 INFO L146 ILogger]: Removed 9 assume(true) statements. [2019-05-23 11:16:33,410 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:16:33 BoogieIcfgContainer [2019-05-23 11:16:33,410 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:16:33,411 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:16:33,411 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:16:33,413 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:16:33,414 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:16:32" (1/3) ... [2019-05-23 11:16:33,414 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@539795d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:16:33, skipping insertion in model container [2019-05-23 11:16:33,414 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:16:32" (2/3) ... [2019-05-23 11:16:33,415 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@539795d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:16:33, skipping insertion in model container [2019-05-23 11:16:33,415 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:16:33" (3/3) ... [2019-05-23 11:16:33,417 INFO L146 ILogger]: Analyzing ICFG sanfoundry_10_true-unreach-call_ground.i [2019-05-23 11:16:33,424 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:16:33,431 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:16:33,448 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:16:33,477 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:16:33,477 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:16:33,477 INFO L146 ILogger]: Hoare is true [2019-05-23 11:16:33,478 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:16:33,478 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:16:33,478 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:16:33,478 INFO L146 ILogger]: Difference is false [2019-05-23 11:16:33,478 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:16:33,479 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:16:33,493 INFO L146 ILogger]: Start isEmpty. Operand 53 states. [2019-05-23 11:16:33,499 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 26 [2019-05-23 11:16:33,500 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:33,501 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] [2019-05-23 11:16:33,503 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:33,508 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:33,508 INFO L146 ILogger]: Analyzing trace with hash -619334530, now seen corresponding path program 1 times [2019-05-23 11:16:33,509 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:33,510 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:33,550 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:33,551 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:33,551 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:33,599 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:33,659 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:33,662 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:16:33,662 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:16:33,666 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:16:33,675 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:16:33,676 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:16:33,678 INFO L146 ILogger]: Start difference. First operand 53 states. Second operand 3 states. [2019-05-23 11:16:33,746 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:33,747 INFO L146 ILogger]: Finished difference Result 95 states and 113 transitions. [2019-05-23 11:16:33,747 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:16:33,748 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 25 [2019-05-23 11:16:33,749 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:33,757 INFO L146 ILogger]: With dead ends: 95 [2019-05-23 11:16:33,757 INFO L146 ILogger]: Without dead ends: 51 [2019-05-23 11:16:33,761 INFO L146 ILogger]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:16:33,775 INFO L146 ILogger]: Start minimizeSevpa. Operand 51 states. [2019-05-23 11:16:33,790 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 51 to 51. [2019-05-23 11:16:33,791 INFO L146 ILogger]: Start removeUnreachable. Operand 51 states. [2019-05-23 11:16:33,792 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2019-05-23 11:16:33,794 INFO L146 ILogger]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 25 [2019-05-23 11:16:33,794 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:33,794 INFO L146 ILogger]: Abstraction has 51 states and 54 transitions. [2019-05-23 11:16:33,794 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:16:33,795 INFO L146 ILogger]: Start isEmpty. Operand 51 states and 54 transitions. [2019-05-23 11:16:33,796 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 37 [2019-05-23 11:16:33,796 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:33,796 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:33,797 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:33,797 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:33,797 INFO L146 ILogger]: Analyzing trace with hash 1669317698, now seen corresponding path program 1 times [2019-05-23 11:16:33,797 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:33,797 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:33,798 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:33,799 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:33,799 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:33,817 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:33,977 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:33,978 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:33,978 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:16:33,993 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:34,043 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:34,045 INFO L146 ILogger]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:16:34,053 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:34,207 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:34,233 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:34,233 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-05-23 11:16:34,235 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:16:34,235 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:16:34,236 INFO L146 ILogger]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:16:34,236 INFO L146 ILogger]: Start difference. First operand 51 states and 54 transitions. Second operand 7 states. [2019-05-23 11:16:34,583 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:34,584 INFO L146 ILogger]: Finished difference Result 119 states and 127 transitions. [2019-05-23 11:16:34,584 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:16:34,585 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 36 [2019-05-23 11:16:34,585 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:34,587 INFO L146 ILogger]: With dead ends: 119 [2019-05-23 11:16:34,587 INFO L146 ILogger]: Without dead ends: 104 [2019-05-23 11:16:34,588 INFO L146 ILogger]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:16:34,589 INFO L146 ILogger]: Start minimizeSevpa. Operand 104 states. [2019-05-23 11:16:34,596 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 104 to 64. [2019-05-23 11:16:34,597 INFO L146 ILogger]: Start removeUnreachable. Operand 64 states. [2019-05-23 11:16:34,598 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 64 states to 64 states and 69 transitions. [2019-05-23 11:16:34,599 INFO L146 ILogger]: Start accepts. Automaton has 64 states and 69 transitions. Word has length 36 [2019-05-23 11:16:34,599 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:34,599 INFO L146 ILogger]: Abstraction has 64 states and 69 transitions. [2019-05-23 11:16:34,599 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:16:34,600 INFO L146 ILogger]: Start isEmpty. Operand 64 states and 69 transitions. [2019-05-23 11:16:34,601 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 44 [2019-05-23 11:16:34,601 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:34,601 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:34,602 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:34,602 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:34,602 INFO L146 ILogger]: Analyzing trace with hash -158565662, now seen corresponding path program 1 times [2019-05-23 11:16:34,602 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:34,602 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:34,603 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:34,604 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:34,604 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:34,620 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:34,891 INFO L146 ILogger]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:34,892 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:34,892 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:16:34,909 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:34,950 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:34,952 INFO L146 ILogger]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:16:34,955 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:35,124 INFO L146 ILogger]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:35,157 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:35,157 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2019-05-23 11:16:35,158 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:16:35,158 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:16:35,161 INFO L146 ILogger]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:16:35,161 INFO L146 ILogger]: Start difference. First operand 64 states and 69 transitions. Second operand 11 states. [2019-05-23 11:16:35,902 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:35,903 INFO L146 ILogger]: Finished difference Result 126 states and 134 transitions. [2019-05-23 11:16:35,903 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-05-23 11:16:35,903 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 43 [2019-05-23 11:16:35,904 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:35,905 INFO L146 ILogger]: With dead ends: 126 [2019-05-23 11:16:35,906 INFO L146 ILogger]: Without dead ends: 111 [2019-05-23 11:16:35,906 INFO L146 ILogger]: 0 DeclaredPredicates, 54 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:16:35,907 INFO L146 ILogger]: Start minimizeSevpa. Operand 111 states. [2019-05-23 11:16:35,914 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 111 to 71. [2019-05-23 11:16:35,914 INFO L146 ILogger]: Start removeUnreachable. Operand 71 states. [2019-05-23 11:16:35,915 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 71 states to 71 states and 76 transitions. [2019-05-23 11:16:35,916 INFO L146 ILogger]: Start accepts. Automaton has 71 states and 76 transitions. Word has length 43 [2019-05-23 11:16:35,916 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:35,916 INFO L146 ILogger]: Abstraction has 71 states and 76 transitions. [2019-05-23 11:16:35,916 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:16:35,916 INFO L146 ILogger]: Start isEmpty. Operand 71 states and 76 transitions. [2019-05-23 11:16:35,918 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 44 [2019-05-23 11:16:35,918 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:35,918 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, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:35,919 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:35,919 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:35,920 INFO L146 ILogger]: Analyzing trace with hash 164789582, now seen corresponding path program 1 times [2019-05-23 11:16:35,920 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:35,920 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:35,921 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:35,921 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:35,921 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:35,965 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:36,176 INFO L146 ILogger]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:36,177 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:36,177 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:16:36,188 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:36,208 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:36,209 INFO L146 ILogger]: Trace formula consists of 79 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:16:36,211 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:36,334 INFO L146 ILogger]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:36,354 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:36,355 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2019-05-23 11:16:36,355 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:16:36,355 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:16:36,356 INFO L146 ILogger]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:16:36,356 INFO L146 ILogger]: Start difference. First operand 71 states and 76 transitions. Second operand 11 states. [2019-05-23 11:16:37,028 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:37,028 INFO L146 ILogger]: Finished difference Result 151 states and 162 transitions. [2019-05-23 11:16:37,030 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:16:37,030 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 43 [2019-05-23 11:16:37,030 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:37,032 INFO L146 ILogger]: With dead ends: 151 [2019-05-23 11:16:37,032 INFO L146 ILogger]: Without dead ends: 136 [2019-05-23 11:16:37,033 INFO L146 ILogger]: 0 DeclaredPredicates, 56 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:16:37,033 INFO L146 ILogger]: Start minimizeSevpa. Operand 136 states. [2019-05-23 11:16:37,040 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 136 to 87. [2019-05-23 11:16:37,040 INFO L146 ILogger]: Start removeUnreachable. Operand 87 states. [2019-05-23 11:16:37,041 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 87 states to 87 states and 94 transitions. [2019-05-23 11:16:37,041 INFO L146 ILogger]: Start accepts. Automaton has 87 states and 94 transitions. Word has length 43 [2019-05-23 11:16:37,042 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:37,042 INFO L146 ILogger]: Abstraction has 87 states and 94 transitions. [2019-05-23 11:16:37,042 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:16:37,042 INFO L146 ILogger]: Start isEmpty. Operand 87 states and 94 transitions. [2019-05-23 11:16:37,044 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 51 [2019-05-23 11:16:37,044 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:37,044 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:37,044 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:37,045 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:37,045 INFO L146 ILogger]: Analyzing trace with hash 547557442, now seen corresponding path program 2 times [2019-05-23 11:16:37,045 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:37,045 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:37,046 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:37,046 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:37,046 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:37,061 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:37,178 INFO L146 ILogger]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:37,178 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:37,178 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:16:37,187 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:16:37,239 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:16:37,239 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:37,240 INFO L146 ILogger]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:16:37,244 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:37,394 INFO L146 ILogger]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-05-23 11:16:37,413 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:37,413 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 12 [2019-05-23 11:16:37,414 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:16:37,414 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:16:37,414 INFO L146 ILogger]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:16:37,415 INFO L146 ILogger]: Start difference. First operand 87 states and 94 transitions. Second operand 12 states. [2019-05-23 11:16:37,821 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:37,821 INFO L146 ILogger]: Finished difference Result 141 states and 152 transitions. [2019-05-23 11:16:37,821 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:16:37,822 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 50 [2019-05-23 11:16:37,822 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:37,824 INFO L146 ILogger]: With dead ends: 141 [2019-05-23 11:16:37,824 INFO L146 ILogger]: Without dead ends: 93 [2019-05-23 11:16:37,825 INFO L146 ILogger]: 0 DeclaredPredicates, 67 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:16:37,826 INFO L146 ILogger]: Start minimizeSevpa. Operand 93 states. [2019-05-23 11:16:37,830 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 93 to 74. [2019-05-23 11:16:37,831 INFO L146 ILogger]: Start removeUnreachable. Operand 74 states. [2019-05-23 11:16:37,832 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2019-05-23 11:16:37,832 INFO L146 ILogger]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 50 [2019-05-23 11:16:37,832 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:37,832 INFO L146 ILogger]: Abstraction has 74 states and 80 transitions. [2019-05-23 11:16:37,832 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:16:37,833 INFO L146 ILogger]: Start isEmpty. Operand 74 states and 80 transitions. [2019-05-23 11:16:37,834 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 51 [2019-05-23 11:16:37,834 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:37,834 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:37,834 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:37,835 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:37,835 INFO L146 ILogger]: Analyzing trace with hash -2013938602, now seen corresponding path program 1 times [2019-05-23 11:16:37,835 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:37,835 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:37,836 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:37,836 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:37,836 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:37,849 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:37,987 INFO L146 ILogger]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:37,987 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:37,987 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:16:38,005 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:38,020 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:38,021 INFO L146 ILogger]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2019-05-23 11:16:38,023 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:38,175 INFO L146 ILogger]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:38,193 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:38,194 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2019-05-23 11:16:38,194 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:16:38,194 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:16:38,195 INFO L146 ILogger]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:16:38,195 INFO L146 ILogger]: Start difference. First operand 74 states and 80 transitions. Second operand 15 states. [2019-05-23 11:16:38,617 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:38,617 INFO L146 ILogger]: Finished difference Result 148 states and 158 transitions. [2019-05-23 11:16:38,620 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-05-23 11:16:38,620 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 50 [2019-05-23 11:16:38,620 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:38,621 INFO L146 ILogger]: With dead ends: 148 [2019-05-23 11:16:38,622 INFO L146 ILogger]: Without dead ends: 133 [2019-05-23 11:16:38,622 INFO L146 ILogger]: 0 DeclaredPredicates, 68 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=160, Invalid=392, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:16:38,626 INFO L146 ILogger]: Start minimizeSevpa. Operand 133 states. [2019-05-23 11:16:38,633 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 133 to 81. [2019-05-23 11:16:38,637 INFO L146 ILogger]: Start removeUnreachable. Operand 81 states. [2019-05-23 11:16:38,638 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2019-05-23 11:16:38,638 INFO L146 ILogger]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 50 [2019-05-23 11:16:38,638 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:38,638 INFO L146 ILogger]: Abstraction has 81 states and 87 transitions. [2019-05-23 11:16:38,639 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:16:38,639 INFO L146 ILogger]: Start isEmpty. Operand 81 states and 87 transitions. [2019-05-23 11:16:38,643 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 51 [2019-05-23 11:16:38,644 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:38,644 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:38,644 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:38,644 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:38,644 INFO L146 ILogger]: Analyzing trace with hash -1690583358, now seen corresponding path program 2 times [2019-05-23 11:16:38,645 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:38,645 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:38,648 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:38,648 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:38,648 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:38,668 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:38,807 INFO L146 ILogger]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:38,807 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:38,807 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:16:38,817 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:16:38,840 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:16:38,840 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:38,840 INFO L146 ILogger]: Trace formula consists of 91 conjuncts, 9 conjunts are in the unsatisfiable core [2019-05-23 11:16:38,842 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:39,066 INFO L146 ILogger]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:39,097 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:39,097 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2019-05-23 11:16:39,098 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:16:39,098 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:16:39,099 INFO L146 ILogger]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:16:39,099 INFO L146 ILogger]: Start difference. First operand 81 states and 87 transitions. Second operand 15 states. [2019-05-23 11:16:39,493 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:39,493 INFO L146 ILogger]: Finished difference Result 175 states and 188 transitions. [2019-05-23 11:16:39,495 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:16:39,495 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 50 [2019-05-23 11:16:39,495 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:39,497 INFO L146 ILogger]: With dead ends: 175 [2019-05-23 11:16:39,497 INFO L146 ILogger]: Without dead ends: 160 [2019-05-23 11:16:39,498 INFO L146 ILogger]: 0 DeclaredPredicates, 70 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=204, Invalid=446, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:16:39,499 INFO L146 ILogger]: Start minimizeSevpa. Operand 160 states. [2019-05-23 11:16:39,505 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 160 to 97. [2019-05-23 11:16:39,505 INFO L146 ILogger]: Start removeUnreachable. Operand 97 states. [2019-05-23 11:16:39,506 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 97 states to 97 states and 105 transitions. [2019-05-23 11:16:39,506 INFO L146 ILogger]: Start accepts. Automaton has 97 states and 105 transitions. Word has length 50 [2019-05-23 11:16:39,507 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:39,510 INFO L146 ILogger]: Abstraction has 97 states and 105 transitions. [2019-05-23 11:16:39,510 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:16:39,510 INFO L146 ILogger]: Start isEmpty. Operand 97 states and 105 transitions. [2019-05-23 11:16:39,511 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 58 [2019-05-23 11:16:39,511 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:39,512 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:39,514 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:39,514 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:39,514 INFO L146 ILogger]: Analyzing trace with hash 361169998, now seen corresponding path program 2 times [2019-05-23 11:16:39,514 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:39,515 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:39,515 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:39,515 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:39,516 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:39,527 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:39,664 INFO L146 ILogger]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:39,665 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:39,665 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:16:39,676 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:16:39,720 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:16:39,720 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:39,721 INFO L146 ILogger]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core [2019-05-23 11:16:39,723 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:40,223 INFO L146 ILogger]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:40,242 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:40,242 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2019-05-23 11:16:40,242 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:16:40,242 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:16:40,243 INFO L146 ILogger]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:16:40,243 INFO L146 ILogger]: Start difference. First operand 97 states and 105 transitions. Second operand 19 states. [2019-05-23 11:16:40,977 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:40,977 INFO L146 ILogger]: Finished difference Result 176 states and 189 transitions. [2019-05-23 11:16:40,978 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:16:40,978 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 57 [2019-05-23 11:16:40,979 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:40,980 INFO L146 ILogger]: With dead ends: 176 [2019-05-23 11:16:40,980 INFO L146 ILogger]: Without dead ends: 161 [2019-05-23 11:16:40,981 INFO L146 ILogger]: 0 DeclaredPredicates, 80 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=249, Invalid=681, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:16:40,981 INFO L146 ILogger]: Start minimizeSevpa. Operand 161 states. [2019-05-23 11:16:40,986 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 161 to 104. [2019-05-23 11:16:40,987 INFO L146 ILogger]: Start removeUnreachable. Operand 104 states. [2019-05-23 11:16:40,987 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 104 states to 104 states and 112 transitions. [2019-05-23 11:16:40,988 INFO L146 ILogger]: Start accepts. Automaton has 104 states and 112 transitions. Word has length 57 [2019-05-23 11:16:40,988 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:40,995 INFO L146 ILogger]: Abstraction has 104 states and 112 transitions. [2019-05-23 11:16:40,995 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:16:40,995 INFO L146 ILogger]: Start isEmpty. Operand 104 states and 112 transitions. [2019-05-23 11:16:40,996 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 58 [2019-05-23 11:16:40,996 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:40,997 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:40,997 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:40,997 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:40,997 INFO L146 ILogger]: Analyzing trace with hash 2094641250, now seen corresponding path program 3 times [2019-05-23 11:16:40,997 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:40,998 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:40,998 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:40,999 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:40,999 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:41,012 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:41,118 INFO L146 ILogger]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:41,118 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:41,118 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:16:41,127 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:16:41,145 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:16:41,146 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:41,146 INFO L146 ILogger]: Trace formula consists of 101 conjuncts, 11 conjunts are in the unsatisfiable core [2019-05-23 11:16:41,149 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:41,269 INFO L146 ILogger]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:41,293 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:41,293 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2019-05-23 11:16:41,293 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:16:41,294 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:16:41,294 INFO L146 ILogger]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:16:41,294 INFO L146 ILogger]: Start difference. First operand 104 states and 112 transitions. Second operand 19 states. [2019-05-23 11:16:41,841 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:41,842 INFO L146 ILogger]: Finished difference Result 189 states and 202 transitions. [2019-05-23 11:16:41,842 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:16:41,842 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 57 [2019-05-23 11:16:41,843 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:41,843 INFO L146 ILogger]: With dead ends: 189 [2019-05-23 11:16:41,844 INFO L146 ILogger]: Without dead ends: 174 [2019-05-23 11:16:41,845 INFO L146 ILogger]: 0 DeclaredPredicates, 82 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=286, Invalid=770, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:16:41,845 INFO L146 ILogger]: Start minimizeSevpa. Operand 174 states. [2019-05-23 11:16:41,853 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 174 to 104. [2019-05-23 11:16:41,855 INFO L146 ILogger]: Start removeUnreachable. Operand 104 states. [2019-05-23 11:16:41,857 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 104 states to 104 states and 112 transitions. [2019-05-23 11:16:41,857 INFO L146 ILogger]: Start accepts. Automaton has 104 states and 112 transitions. Word has length 57 [2019-05-23 11:16:41,857 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:41,858 INFO L146 ILogger]: Abstraction has 104 states and 112 transitions. [2019-05-23 11:16:41,860 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:16:41,860 INFO L146 ILogger]: Start isEmpty. Operand 104 states and 112 transitions. [2019-05-23 11:16:41,861 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 58 [2019-05-23 11:16:41,861 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:41,861 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1] [2019-05-23 11:16:41,862 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:41,862 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:41,862 INFO L146 ILogger]: Analyzing trace with hash -1876970802, now seen corresponding path program 3 times [2019-05-23 11:16:41,862 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:41,862 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:41,864 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:41,864 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:41,864 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:41,881 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:42,012 INFO L146 ILogger]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:42,013 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:42,013 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:16:42,022 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:16:42,040 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:16:42,040 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:42,041 INFO L146 ILogger]: Trace formula consists of 91 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:16:42,043 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:42,205 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2019-05-23 11:16:42,206 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:16:42,213 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:16:42,213 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:16:42,213 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:4 [2019-05-23 11:16:42,324 INFO L146 ILogger]: Checked inductivity of 43 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-05-23 11:16:42,344 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:42,344 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2019-05-23 11:16:42,344 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:16:42,344 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:16:42,345 INFO L146 ILogger]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:16:42,345 INFO L146 ILogger]: Start difference. First operand 104 states and 112 transitions. Second operand 20 states. [2019-05-23 11:16:44,517 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:44,517 INFO L146 ILogger]: Finished difference Result 331 states and 360 transitions. [2019-05-23 11:16:44,518 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-05-23 11:16:44,518 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 57 [2019-05-23 11:16:44,518 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:44,520 INFO L146 ILogger]: With dead ends: 331 [2019-05-23 11:16:44,520 INFO L146 ILogger]: Without dead ends: 274 [2019-05-23 11:16:44,523 INFO L146 ILogger]: 0 DeclaredPredicates, 113 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1088 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=742, Invalid=3418, Unknown=0, NotChecked=0, Total=4160 [2019-05-23 11:16:44,524 INFO L146 ILogger]: Start minimizeSevpa. Operand 274 states. [2019-05-23 11:16:44,534 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 274 to 187. [2019-05-23 11:16:44,534 INFO L146 ILogger]: Start removeUnreachable. Operand 187 states. [2019-05-23 11:16:44,535 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 187 states to 187 states and 202 transitions. [2019-05-23 11:16:44,535 INFO L146 ILogger]: Start accepts. Automaton has 187 states and 202 transitions. Word has length 57 [2019-05-23 11:16:44,536 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:44,536 INFO L146 ILogger]: Abstraction has 187 states and 202 transitions. [2019-05-23 11:16:44,536 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:16:44,536 INFO L146 ILogger]: Start isEmpty. Operand 187 states and 202 transitions. [2019-05-23 11:16:44,537 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 65 [2019-05-23 11:16:44,537 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:44,537 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:44,538 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:44,538 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:44,538 INFO L146 ILogger]: Analyzing trace with hash 1751864662, now seen corresponding path program 4 times [2019-05-23 11:16:44,538 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:44,538 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:44,539 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:44,539 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:44,539 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:44,549 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:44,691 INFO L146 ILogger]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:44,691 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:44,692 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:16:44,702 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:16:44,721 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:16:44,721 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:44,722 INFO L146 ILogger]: Trace formula consists of 105 conjuncts, 31 conjunts are in the unsatisfiable core [2019-05-23 11:16:44,727 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:44,926 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:16:44,927 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2019-05-23 11:16:44,927 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:16:44,938 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:16:44,939 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:16:44,939 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:30, output treesize:15 [2019-05-23 11:16:45,036 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:16:45,037 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2019-05-23 11:16:45,038 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:16:45,045 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:16:45,046 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:16:45,046 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:30, output treesize:15 [2019-05-23 11:16:45,143 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:16:45,144 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2019-05-23 11:16:45,145 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:16:45,157 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:16:45,158 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:16:45,158 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:30, output treesize:12 [2019-05-23 11:16:45,245 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2019-05-23 11:16:45,245 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:16:45,257 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:16:45,257 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:16:45,257 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:4 [2019-05-23 11:16:45,312 INFO L146 ILogger]: Checked inductivity of 32 backedges. 13 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:45,331 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:45,331 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 20] total 31 [2019-05-23 11:16:45,331 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:16:45,332 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:16:45,333 INFO L146 ILogger]: CoverageRelationStatistics Valid=107, Invalid=823, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:16:45,333 INFO L146 ILogger]: Start difference. First operand 187 states and 202 transitions. Second operand 31 states. [2019-05-23 11:16:49,293 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:49,293 INFO L146 ILogger]: Finished difference Result 385 states and 410 transitions. [2019-05-23 11:16:49,293 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2019-05-23 11:16:49,294 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 64 [2019-05-23 11:16:49,294 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:49,297 INFO L146 ILogger]: With dead ends: 385 [2019-05-23 11:16:49,297 INFO L146 ILogger]: Without dead ends: 370 [2019-05-23 11:16:49,300 INFO L146 ILogger]: 0 DeclaredPredicates, 142 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2353 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1412, Invalid=7708, Unknown=0, NotChecked=0, Total=9120 [2019-05-23 11:16:49,301 INFO L146 ILogger]: Start minimizeSevpa. Operand 370 states. [2019-05-23 11:16:49,313 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 370 to 228. [2019-05-23 11:16:49,313 INFO L146 ILogger]: Start removeUnreachable. Operand 228 states. [2019-05-23 11:16:49,314 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 228 states to 228 states and 243 transitions. [2019-05-23 11:16:49,314 INFO L146 ILogger]: Start accepts. Automaton has 228 states and 243 transitions. Word has length 64 [2019-05-23 11:16:49,315 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:49,315 INFO L146 ILogger]: Abstraction has 228 states and 243 transitions. [2019-05-23 11:16:49,315 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:16:49,315 INFO L146 ILogger]: Start isEmpty. Operand 228 states and 243 transitions. [2019-05-23 11:16:49,316 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 67 [2019-05-23 11:16:49,316 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:49,316 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:49,317 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:49,317 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:49,317 INFO L146 ILogger]: Analyzing trace with hash -1881693215, now seen corresponding path program 5 times [2019-05-23 11:16:49,317 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:49,318 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:49,318 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:49,319 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:49,319 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:49,323 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:49,377 INFO L146 ILogger]: Checked inductivity of 33 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-05-23 11:16:49,377 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:16:49,377 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:16:49,379 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:16:49,379 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:16:49,379 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:16:49,379 INFO L146 ILogger]: Start difference. First operand 228 states and 243 transitions. Second operand 3 states. [2019-05-23 11:16:49,410 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:49,410 INFO L146 ILogger]: Finished difference Result 240 states and 255 transitions. [2019-05-23 11:16:49,411 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:16:49,411 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 66 [2019-05-23 11:16:49,411 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:49,412 INFO L146 ILogger]: With dead ends: 240 [2019-05-23 11:16:49,412 INFO L146 ILogger]: Without dead ends: 130 [2019-05-23 11:16:49,413 INFO L146 ILogger]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:16:49,413 INFO L146 ILogger]: Start minimizeSevpa. Operand 130 states. [2019-05-23 11:16:49,418 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 130 to 130. [2019-05-23 11:16:49,418 INFO L146 ILogger]: Start removeUnreachable. Operand 130 states. [2019-05-23 11:16:49,419 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 130 states to 130 states and 135 transitions. [2019-05-23 11:16:49,419 INFO L146 ILogger]: Start accepts. Automaton has 130 states and 135 transitions. Word has length 66 [2019-05-23 11:16:49,419 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:49,419 INFO L146 ILogger]: Abstraction has 130 states and 135 transitions. [2019-05-23 11:16:49,419 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:16:49,420 INFO L146 ILogger]: Start isEmpty. Operand 130 states and 135 transitions. [2019-05-23 11:16:49,420 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 75 [2019-05-23 11:16:49,420 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:49,421 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:49,421 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:49,421 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:49,421 INFO L146 ILogger]: Analyzing trace with hash 1881658805, now seen corresponding path program 1 times [2019-05-23 11:16:49,421 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:49,422 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:49,422 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:49,422 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:49,423 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:49,431 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:49,583 INFO L146 ILogger]: Checked inductivity of 37 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-05-23 11:16:49,583 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:49,583 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:16:49,591 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:49,607 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:49,608 INFO L146 ILogger]: Trace formula consists of 126 conjuncts, 13 conjunts are in the unsatisfiable core [2019-05-23 11:16:49,610 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:49,791 INFO L146 ILogger]: Checked inductivity of 37 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-05-23 11:16:49,811 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:49,812 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2019-05-23 11:16:49,812 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:16:49,812 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:16:49,813 INFO L146 ILogger]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:16:49,813 INFO L146 ILogger]: Start difference. First operand 130 states and 135 transitions. Second operand 23 states. [2019-05-23 11:16:50,622 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:50,622 INFO L146 ILogger]: Finished difference Result 200 states and 207 transitions. [2019-05-23 11:16:50,630 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:16:50,630 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 74 [2019-05-23 11:16:50,630 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:50,631 INFO L146 ILogger]: With dead ends: 200 [2019-05-23 11:16:50,631 INFO L146 ILogger]: Without dead ends: 179 [2019-05-23 11:16:50,632 INFO L146 ILogger]: 0 DeclaredPredicates, 101 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=315, Invalid=1017, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:16:50,632 INFO L146 ILogger]: Start minimizeSevpa. Operand 179 states. [2019-05-23 11:16:50,637 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 179 to 130. [2019-05-23 11:16:50,637 INFO L146 ILogger]: Start removeUnreachable. Operand 130 states. [2019-05-23 11:16:50,638 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 130 states to 130 states and 135 transitions. [2019-05-23 11:16:50,638 INFO L146 ILogger]: Start accepts. Automaton has 130 states and 135 transitions. Word has length 74 [2019-05-23 11:16:50,639 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:50,639 INFO L146 ILogger]: Abstraction has 130 states and 135 transitions. [2019-05-23 11:16:50,639 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:16:50,639 INFO L146 ILogger]: Start isEmpty. Operand 130 states and 135 transitions. [2019-05-23 11:16:50,640 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 75 [2019-05-23 11:16:50,640 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:50,640 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:50,640 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:50,641 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:50,641 INFO L146 ILogger]: Analyzing trace with hash -1561233207, now seen corresponding path program 2 times [2019-05-23 11:16:50,641 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:50,641 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:50,642 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:50,642 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:50,642 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:50,650 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:50,854 INFO L146 ILogger]: Checked inductivity of 50 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-05-23 11:16:50,855 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:50,855 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:16:50,863 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:16:50,881 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:16:50,881 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:50,882 INFO L146 ILogger]: Trace formula consists of 128 conjuncts, 13 conjunts are in the unsatisfiable core [2019-05-23 11:16:50,883 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:51,089 INFO L146 ILogger]: Checked inductivity of 50 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-05-23 11:16:51,118 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:51,118 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2019-05-23 11:16:51,119 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:16:51,120 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:16:51,121 INFO L146 ILogger]: CoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:16:51,121 INFO L146 ILogger]: Start difference. First operand 130 states and 135 transitions. Second operand 23 states. [2019-05-23 11:16:51,560 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:51,560 INFO L146 ILogger]: Finished difference Result 208 states and 215 transitions. [2019-05-23 11:16:51,560 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:16:51,561 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 74 [2019-05-23 11:16:51,561 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:51,562 INFO L146 ILogger]: With dead ends: 208 [2019-05-23 11:16:51,562 INFO L146 ILogger]: Without dead ends: 187 [2019-05-23 11:16:51,563 INFO L146 ILogger]: 0 DeclaredPredicates, 103 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=363, Invalid=1119, Unknown=0, NotChecked=0, Total=1482 [2019-05-23 11:16:51,563 INFO L146 ILogger]: Start minimizeSevpa. Operand 187 states. [2019-05-23 11:16:51,568 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 187 to 130. [2019-05-23 11:16:51,568 INFO L146 ILogger]: Start removeUnreachable. Operand 130 states. [2019-05-23 11:16:51,569 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 130 states to 130 states and 135 transitions. [2019-05-23 11:16:51,569 INFO L146 ILogger]: Start accepts. Automaton has 130 states and 135 transitions. Word has length 74 [2019-05-23 11:16:51,569 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:51,569 INFO L146 ILogger]: Abstraction has 130 states and 135 transitions. [2019-05-23 11:16:51,569 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:16:51,569 INFO L146 ILogger]: Start isEmpty. Operand 130 states and 135 transitions. [2019-05-23 11:16:51,570 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 75 [2019-05-23 11:16:51,570 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:51,570 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:51,571 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:51,571 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:51,571 INFO L146 ILogger]: Analyzing trace with hash 1889035317, now seen corresponding path program 1 times [2019-05-23 11:16:51,571 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:51,571 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:51,572 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:51,572 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:51,572 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:51,579 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:51,730 INFO L146 ILogger]: Checked inductivity of 77 backedges. 0 proven. 71 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-05-23 11:16:51,731 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:51,731 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 11:16:51,741 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:51,758 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:51,759 INFO L146 ILogger]: Trace formula consists of 130 conjuncts, 13 conjunts are in the unsatisfiable core [2019-05-23 11:16:51,761 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:52,047 INFO L146 ILogger]: Checked inductivity of 77 backedges. 0 proven. 71 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-05-23 11:16:52,067 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:52,067 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2019-05-23 11:16:52,067 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:16:52,067 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:16:52,068 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=386, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:16:52,068 INFO L146 ILogger]: Start difference. First operand 130 states and 135 transitions. Second operand 23 states. [2019-05-23 11:16:52,650 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:52,650 INFO L146 ILogger]: Finished difference Result 216 states and 224 transitions. [2019-05-23 11:16:52,650 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:16:52,650 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 74 [2019-05-23 11:16:52,651 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:52,651 INFO L146 ILogger]: With dead ends: 216 [2019-05-23 11:16:52,651 INFO L146 ILogger]: Without dead ends: 195 [2019-05-23 11:16:52,652 INFO L146 ILogger]: 0 DeclaredPredicates, 105 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=441, Invalid=1199, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:16:52,653 INFO L146 ILogger]: Start minimizeSevpa. Operand 195 states. [2019-05-23 11:16:52,658 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 195 to 146. [2019-05-23 11:16:52,658 INFO L146 ILogger]: Start removeUnreachable. Operand 146 states. [2019-05-23 11:16:52,659 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 146 states to 146 states and 152 transitions. [2019-05-23 11:16:52,659 INFO L146 ILogger]: Start accepts. Automaton has 146 states and 152 transitions. Word has length 74 [2019-05-23 11:16:52,659 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:52,660 INFO L146 ILogger]: Abstraction has 146 states and 152 transitions. [2019-05-23 11:16:52,660 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:16:52,660 INFO L146 ILogger]: Start isEmpty. Operand 146 states and 152 transitions. [2019-05-23 11:16:52,661 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 82 [2019-05-23 11:16:52,661 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:52,661 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:52,661 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:52,661 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:52,662 INFO L146 ILogger]: Analyzing trace with hash -929155263, now seen corresponding path program 3 times [2019-05-23 11:16:52,662 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:52,662 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:52,662 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:52,663 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:52,663 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:52,670 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:53,426 INFO L146 ILogger]: Checked inductivity of 60 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-05-23 11:16:53,427 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:53,427 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 11:16:53,436 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:16:53,457 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:16:53,457 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:53,458 INFO L146 ILogger]: Trace formula consists of 114 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:16:53,460 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:53,554 INFO L146 ILogger]: Checked inductivity of 60 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-05-23 11:16:53,573 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:53,573 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 22 [2019-05-23 11:16:53,573 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:16:53,574 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:16:53,574 INFO L146 ILogger]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:16:53,574 INFO L146 ILogger]: Start difference. First operand 146 states and 152 transitions. Second operand 22 states. [2019-05-23 11:16:54,363 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:54,364 INFO L146 ILogger]: Finished difference Result 215 states and 223 transitions. [2019-05-23 11:16:54,364 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-05-23 11:16:54,364 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 81 [2019-05-23 11:16:54,364 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:54,365 INFO L146 ILogger]: With dead ends: 215 [2019-05-23 11:16:54,365 INFO L146 ILogger]: Without dead ends: 130 [2019-05-23 11:16:54,366 INFO L146 ILogger]: 0 DeclaredPredicates, 117 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=354, Invalid=1452, Unknown=0, NotChecked=0, Total=1806 [2019-05-23 11:16:54,367 INFO L146 ILogger]: Start minimizeSevpa. Operand 130 states. [2019-05-23 11:16:54,371 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 130 to 130. [2019-05-23 11:16:54,372 INFO L146 ILogger]: Start removeUnreachable. Operand 130 states. [2019-05-23 11:16:54,372 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 130 states to 130 states and 135 transitions. [2019-05-23 11:16:54,372 INFO L146 ILogger]: Start accepts. Automaton has 130 states and 135 transitions. Word has length 81 [2019-05-23 11:16:54,372 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:54,373 INFO L146 ILogger]: Abstraction has 130 states and 135 transitions. [2019-05-23 11:16:54,373 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:16:54,373 INFO L146 ILogger]: Start isEmpty. Operand 130 states and 135 transitions. [2019-05-23 11:16:54,374 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 82 [2019-05-23 11:16:54,374 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:54,374 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:54,374 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:54,374 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:54,375 INFO L146 ILogger]: Analyzing trace with hash -1586305195, now seen corresponding path program 4 times [2019-05-23 11:16:54,375 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:54,375 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:54,376 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:54,376 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:54,376 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:54,384 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:54,616 INFO L146 ILogger]: Checked inductivity of 52 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-05-23 11:16:54,617 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:54,617 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 11:16:54,626 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:16:54,648 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:16:54,648 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:54,649 INFO L146 ILogger]: Trace formula consists of 132 conjuncts, 39 conjunts are in the unsatisfiable core [2019-05-23 11:16:54,651 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:55,042 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:16:55,044 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2019-05-23 11:16:55,044 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:16:55,051 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:16:55,052 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:16:55,052 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:32, output treesize:17 [2019-05-23 11:16:55,113 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:16:55,114 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2019-05-23 11:16:55,115 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:16:55,122 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:16:55,122 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:16:55,123 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:32, output treesize:17 [2019-05-23 11:16:55,222 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:16:55,223 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2019-05-23 11:16:55,223 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:16:55,230 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:16:55,231 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:16:55,231 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:32, output treesize:14 [2019-05-23 11:16:55,351 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2019-05-23 11:16:55,352 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:16:55,358 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:16:55,358 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:16:55,359 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:4 [2019-05-23 11:16:55,439 INFO L146 ILogger]: Checked inductivity of 52 backedges. 13 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:55,458 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:55,458 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 24] total 37 [2019-05-23 11:16:55,459 INFO L146 ILogger]: Interpolant automaton has 37 states [2019-05-23 11:16:55,459 INFO L146 ILogger]: Constructing interpolant automaton starting with 37 interpolants. [2019-05-23 11:16:55,460 INFO L146 ILogger]: CoverageRelationStatistics Valid=131, Invalid=1201, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:16:55,460 INFO L146 ILogger]: Start difference. First operand 130 states and 135 transitions. Second operand 37 states. [2019-05-23 11:16:57,228 WARN L146 ILogger]: Spent 204.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2019-05-23 11:17:00,108 WARN L146 ILogger]: Spent 418.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2019-05-23 11:17:01,804 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:01,805 INFO L146 ILogger]: Finished difference Result 249 states and 260 transitions. [2019-05-23 11:17:01,808 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2019-05-23 11:17:01,808 INFO L146 ILogger]: Start accepts. Automaton has 37 states. Word has length 81 [2019-05-23 11:17:01,808 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:01,809 INFO L146 ILogger]: With dead ends: 249 [2019-05-23 11:17:01,809 INFO L146 ILogger]: Without dead ends: 228 [2019-05-23 11:17:01,812 INFO L146 ILogger]: 0 DeclaredPredicates, 156 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2099 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=1331, Invalid=7981, Unknown=0, NotChecked=0, Total=9312 [2019-05-23 11:17:01,812 INFO L146 ILogger]: Start minimizeSevpa. Operand 228 states. [2019-05-23 11:17:01,819 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 228 to 147. [2019-05-23 11:17:01,819 INFO L146 ILogger]: Start removeUnreachable. Operand 147 states. [2019-05-23 11:17:01,820 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 147 states to 147 states and 152 transitions. [2019-05-23 11:17:01,820 INFO L146 ILogger]: Start accepts. Automaton has 147 states and 152 transitions. Word has length 81 [2019-05-23 11:17:01,820 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:01,820 INFO L146 ILogger]: Abstraction has 147 states and 152 transitions. [2019-05-23 11:17:01,820 INFO L146 ILogger]: Interpolant automaton has 37 states. [2019-05-23 11:17:01,820 INFO L146 ILogger]: Start isEmpty. Operand 147 states and 152 transitions. [2019-05-23 11:17:01,821 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 92 [2019-05-23 11:17:01,821 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:01,821 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:01,822 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:01,822 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:01,822 INFO L146 ILogger]: Analyzing trace with hash -1242423820, now seen corresponding path program 5 times [2019-05-23 11:17:01,822 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:01,822 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:01,823 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:01,823 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:01,823 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:01,831 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:02,123 INFO L146 ILogger]: Checked inductivity of 74 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-05-23 11:17:02,124 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:02,124 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:02,139 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:17:02,167 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2019-05-23 11:17:02,167 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:02,168 INFO L146 ILogger]: Trace formula consists of 153 conjuncts, 15 conjunts are in the unsatisfiable core [2019-05-23 11:17:02,170 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:02,354 INFO L146 ILogger]: Checked inductivity of 74 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-05-23 11:17:02,373 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:02,374 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2019-05-23 11:17:02,374 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:17:02,374 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:17:02,375 INFO L146 ILogger]: CoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:17:02,375 INFO L146 ILogger]: Start difference. First operand 147 states and 152 transitions. Second operand 27 states. [2019-05-23 11:17:02,786 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:02,786 INFO L146 ILogger]: Finished difference Result 237 states and 244 transitions. [2019-05-23 11:17:02,788 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:17:02,788 INFO L146 ILogger]: Start accepts. Automaton has 27 states. Word has length 91 [2019-05-23 11:17:02,788 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:02,789 INFO L146 ILogger]: With dead ends: 237 [2019-05-23 11:17:02,789 INFO L146 ILogger]: Without dead ends: 206 [2019-05-23 11:17:02,790 INFO L146 ILogger]: 0 DeclaredPredicates, 122 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=399, Invalid=1407, Unknown=0, NotChecked=0, Total=1806 [2019-05-23 11:17:02,791 INFO L146 ILogger]: Start minimizeSevpa. Operand 206 states. [2019-05-23 11:17:02,797 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 206 to 147. [2019-05-23 11:17:02,797 INFO L146 ILogger]: Start removeUnreachable. Operand 147 states. [2019-05-23 11:17:02,798 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 147 states to 147 states and 152 transitions. [2019-05-23 11:17:02,798 INFO L146 ILogger]: Start accepts. Automaton has 147 states and 152 transitions. Word has length 91 [2019-05-23 11:17:02,798 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:02,798 INFO L146 ILogger]: Abstraction has 147 states and 152 transitions. [2019-05-23 11:17:02,798 INFO L146 ILogger]: Interpolant automaton has 27 states. [2019-05-23 11:17:02,798 INFO L146 ILogger]: Start isEmpty. Operand 147 states and 152 transitions. [2019-05-23 11:17:02,799 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 92 [2019-05-23 11:17:02,799 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:02,799 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:02,799 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:02,800 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:02,800 INFO L146 ILogger]: Analyzing trace with hash 19527688, now seen corresponding path program 6 times [2019-05-23 11:17:02,800 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:02,800 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:02,800 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:02,801 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:02,801 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:02,808 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:03,204 INFO L146 ILogger]: Checked inductivity of 94 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-05-23 11:17:03,205 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:03,205 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:03,215 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:17:03,238 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-05-23 11:17:03,238 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:03,240 INFO L146 ILogger]: Trace formula consists of 143 conjuncts, 39 conjunts are in the unsatisfiable core [2019-05-23 11:17:03,242 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:03,463 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:17:03,463 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 55 [2019-05-23 11:17:03,465 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:17:03,519 INFO L146 ILogger]: treesize reduction 20, result has 65.5 percent of original size [2019-05-23 11:17:03,521 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:17:03,521 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:32, output treesize:18 [2019-05-23 11:17:03,746 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2019-05-23 11:17:03,747 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:17:03,761 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:17:03,761 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:17:03,761 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:4 [2019-05-23 11:17:03,834 INFO L146 ILogger]: Checked inductivity of 94 backedges. 8 proven. 79 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:17:03,852 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:03,852 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 22] total 35 [2019-05-23 11:17:03,853 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:17:03,853 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:17:03,853 INFO L146 ILogger]: CoverageRelationStatistics Valid=119, Invalid=1071, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:17:03,854 INFO L146 ILogger]: Start difference. First operand 147 states and 152 transitions. Second operand 35 states. [2019-05-23 11:17:04,288 WARN L146 ILogger]: Spent 123.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2019-05-23 11:17:07,529 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:07,529 INFO L146 ILogger]: Finished difference Result 353 states and 364 transitions. [2019-05-23 11:17:07,529 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2019-05-23 11:17:07,530 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 91 [2019-05-23 11:17:07,530 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:07,531 INFO L146 ILogger]: With dead ends: 353 [2019-05-23 11:17:07,531 INFO L146 ILogger]: Without dead ends: 322 [2019-05-23 11:17:07,533 INFO L146 ILogger]: 0 DeclaredPredicates, 175 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2750 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1186, Invalid=9526, Unknown=0, NotChecked=0, Total=10712 [2019-05-23 11:17:07,534 INFO L146 ILogger]: Start minimizeSevpa. Operand 322 states. [2019-05-23 11:17:07,542 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 322 to 168. [2019-05-23 11:17:07,543 INFO L146 ILogger]: Start removeUnreachable. Operand 168 states. [2019-05-23 11:17:07,543 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 168 states to 168 states and 175 transitions. [2019-05-23 11:17:07,543 INFO L146 ILogger]: Start accepts. Automaton has 168 states and 175 transitions. Word has length 91 [2019-05-23 11:17:07,544 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:07,544 INFO L146 ILogger]: Abstraction has 168 states and 175 transitions. [2019-05-23 11:17:07,544 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:17:07,544 INFO L146 ILogger]: Start isEmpty. Operand 168 states and 175 transitions. [2019-05-23 11:17:07,544 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 99 [2019-05-23 11:17:07,545 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:07,545 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:07,545 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:07,545 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:07,545 INFO L146 ILogger]: Analyzing trace with hash -1736304408, now seen corresponding path program 7 times [2019-05-23 11:17:07,545 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:07,546 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:07,546 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:07,546 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:07,546 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:07,559 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:07,745 INFO L146 ILogger]: Checked inductivity of 90 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-05-23 11:17:07,745 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:07,745 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:07,754 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:07,777 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:07,778 INFO L146 ILogger]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2019-05-23 11:17:07,779 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:08,047 INFO L146 ILogger]: Checked inductivity of 90 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-05-23 11:17:08,065 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:08,065 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 31 [2019-05-23 11:17:08,065 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:17:08,065 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:17:08,066 INFO L146 ILogger]: CoverageRelationStatistics Valid=180, Invalid=750, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:17:08,066 INFO L146 ILogger]: Start difference. First operand 168 states and 175 transitions. Second operand 31 states. [2019-05-23 11:17:08,563 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:08,563 INFO L146 ILogger]: Finished difference Result 264 states and 273 transitions. [2019-05-23 11:17:08,563 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:17:08,564 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 98 [2019-05-23 11:17:08,564 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:08,565 INFO L146 ILogger]: With dead ends: 264 [2019-05-23 11:17:08,565 INFO L146 ILogger]: Without dead ends: 233 [2019-05-23 11:17:08,566 INFO L146 ILogger]: 0 DeclaredPredicates, 132 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 628 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=503, Invalid=1753, Unknown=0, NotChecked=0, Total=2256 [2019-05-23 11:17:08,566 INFO L146 ILogger]: Start minimizeSevpa. Operand 233 states. [2019-05-23 11:17:08,575 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 233 to 175. [2019-05-23 11:17:08,575 INFO L146 ILogger]: Start removeUnreachable. Operand 175 states. [2019-05-23 11:17:08,576 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 175 states to 175 states and 182 transitions. [2019-05-23 11:17:08,576 INFO L146 ILogger]: Start accepts. Automaton has 175 states and 182 transitions. Word has length 98 [2019-05-23 11:17:08,576 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:08,576 INFO L146 ILogger]: Abstraction has 175 states and 182 transitions. [2019-05-23 11:17:08,577 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:17:08,577 INFO L146 ILogger]: Start isEmpty. Operand 175 states and 182 transitions. [2019-05-23 11:17:08,577 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 99 [2019-05-23 11:17:08,577 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:08,578 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:08,578 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:08,578 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:08,578 INFO L146 ILogger]: Analyzing trace with hash 1427685372, now seen corresponding path program 8 times [2019-05-23 11:17:08,578 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:08,578 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:08,579 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:08,579 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:08,579 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:08,587 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:08,815 INFO L146 ILogger]: Checked inductivity of 89 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-05-23 11:17:08,816 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:08,816 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:08,826 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:17:08,855 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:17:08,856 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:08,857 INFO L146 ILogger]: Trace formula consists of 163 conjuncts, 17 conjunts are in the unsatisfiable core [2019-05-23 11:17:08,860 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:09,092 INFO L146 ILogger]: Checked inductivity of 89 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-05-23 11:17:09,111 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:09,111 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 31 [2019-05-23 11:17:09,111 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:17:09,112 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:17:09,112 INFO L146 ILogger]: CoverageRelationStatistics Valid=178, Invalid=752, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:17:09,112 INFO L146 ILogger]: Start difference. First operand 175 states and 182 transitions. Second operand 31 states. [2019-05-23 11:17:09,631 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:09,631 INFO L146 ILogger]: Finished difference Result 279 states and 288 transitions. [2019-05-23 11:17:09,631 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:17:09,632 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 98 [2019-05-23 11:17:09,632 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:09,633 INFO L146 ILogger]: With dead ends: 279 [2019-05-23 11:17:09,633 INFO L146 ILogger]: Without dead ends: 248 [2019-05-23 11:17:09,634 INFO L146 ILogger]: 0 DeclaredPredicates, 134 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=525, Invalid=1925, Unknown=0, NotChecked=0, Total=2450 [2019-05-23 11:17:09,634 INFO L146 ILogger]: Start minimizeSevpa. Operand 248 states. [2019-05-23 11:17:09,643 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 248 to 175. [2019-05-23 11:17:09,644 INFO L146 ILogger]: Start removeUnreachable. Operand 175 states. [2019-05-23 11:17:09,644 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 175 states to 175 states and 182 transitions. [2019-05-23 11:17:09,644 INFO L146 ILogger]: Start accepts. Automaton has 175 states and 182 transitions. Word has length 98 [2019-05-23 11:17:09,645 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:09,645 INFO L146 ILogger]: Abstraction has 175 states and 182 transitions. [2019-05-23 11:17:09,645 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:17:09,645 INFO L146 ILogger]: Start isEmpty. Operand 175 states and 182 transitions. [2019-05-23 11:17:09,646 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 99 [2019-05-23 11:17:09,646 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:09,646 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:09,646 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:09,646 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:09,647 INFO L146 ILogger]: Analyzing trace with hash 734996328, now seen corresponding path program 9 times [2019-05-23 11:17:09,647 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:09,647 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:09,648 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:09,648 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:09,648 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:09,656 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:10,336 INFO L146 ILogger]: Checked inductivity of 102 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-05-23 11:17:10,337 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:10,337 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:10,346 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:17:10,373 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-05-23 11:17:10,373 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:10,374 INFO L146 ILogger]: Trace formula consists of 165 conjuncts, 17 conjunts are in the unsatisfiable core [2019-05-23 11:17:10,375 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:10,570 INFO L146 ILogger]: Checked inductivity of 102 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-05-23 11:17:10,590 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:10,590 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 31 [2019-05-23 11:17:10,590 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:17:10,590 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:17:10,591 INFO L146 ILogger]: CoverageRelationStatistics Valid=182, Invalid=748, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:17:10,591 INFO L146 ILogger]: Start difference. First operand 175 states and 182 transitions. Second operand 31 states. [2019-05-23 11:17:11,463 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:11,463 INFO L146 ILogger]: Finished difference Result 287 states and 296 transitions. [2019-05-23 11:17:11,465 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:17:11,465 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 98 [2019-05-23 11:17:11,465 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:11,466 INFO L146 ILogger]: With dead ends: 287 [2019-05-23 11:17:11,466 INFO L146 ILogger]: Without dead ends: 256 [2019-05-23 11:17:11,467 INFO L146 ILogger]: 0 DeclaredPredicates, 136 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 748 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=577, Invalid=2075, Unknown=0, NotChecked=0, Total=2652 [2019-05-23 11:17:11,468 INFO L146 ILogger]: Start minimizeSevpa. Operand 256 states. [2019-05-23 11:17:11,477 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 256 to 175. [2019-05-23 11:17:11,478 INFO L146 ILogger]: Start removeUnreachable. Operand 175 states. [2019-05-23 11:17:11,478 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 175 states to 175 states and 182 transitions. [2019-05-23 11:17:11,478 INFO L146 ILogger]: Start accepts. Automaton has 175 states and 182 transitions. Word has length 98 [2019-05-23 11:17:11,479 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:11,479 INFO L146 ILogger]: Abstraction has 175 states and 182 transitions. [2019-05-23 11:17:11,479 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:17:11,479 INFO L146 ILogger]: Start isEmpty. Operand 175 states and 182 transitions. [2019-05-23 11:17:11,480 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 102 [2019-05-23 11:17:11,480 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:11,480 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 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] [2019-05-23 11:17:11,480 INFO L146 ILogger]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:11,480 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:11,481 INFO L146 ILogger]: Analyzing trace with hash -439172889, now seen corresponding path program 2 times [2019-05-23 11:17:11,481 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:11,481 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:11,482 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:11,482 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:11,482 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:11,489 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:11,962 INFO L146 ILogger]: Checked inductivity of 154 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-05-23 11:17:11,963 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:11,963 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:11,971 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:17:12,023 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:17:12,023 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:12,024 INFO L146 ILogger]: Trace formula consists of 172 conjuncts, 15 conjunts are in the unsatisfiable core [2019-05-23 11:17:12,026 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:12,239 INFO L146 ILogger]: Checked inductivity of 154 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-05-23 11:17:12,257 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:12,257 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2019-05-23 11:17:12,258 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:17:12,258 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:17:12,258 INFO L146 ILogger]: CoverageRelationStatistics Valid=161, Invalid=541, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:17:12,259 INFO L146 ILogger]: Start difference. First operand 175 states and 182 transitions. Second operand 27 states. [2019-05-23 11:17:12,733 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:12,733 INFO L146 ILogger]: Finished difference Result 306 states and 317 transitions. [2019-05-23 11:17:12,733 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:17:12,733 INFO L146 ILogger]: Start accepts. Automaton has 27 states. Word has length 101 [2019-05-23 11:17:12,733 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:12,734 INFO L146 ILogger]: With dead ends: 306 [2019-05-23 11:17:12,734 INFO L146 ILogger]: Without dead ends: 265 [2019-05-23 11:17:12,735 INFO L146 ILogger]: 0 DeclaredPredicates, 136 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 591 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=547, Invalid=1615, Unknown=0, NotChecked=0, Total=2162 [2019-05-23 11:17:12,735 INFO L146 ILogger]: Start minimizeSevpa. Operand 265 states. [2019-05-23 11:17:12,745 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 265 to 192. [2019-05-23 11:17:12,745 INFO L146 ILogger]: Start removeUnreachable. Operand 192 states. [2019-05-23 11:17:12,746 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 192 states to 192 states and 200 transitions. [2019-05-23 11:17:12,746 INFO L146 ILogger]: Start accepts. Automaton has 192 states and 200 transitions. Word has length 101 [2019-05-23 11:17:12,746 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:12,746 INFO L146 ILogger]: Abstraction has 192 states and 200 transitions. [2019-05-23 11:17:12,746 INFO L146 ILogger]: Interpolant automaton has 27 states. [2019-05-23 11:17:12,746 INFO L146 ILogger]: Start isEmpty. Operand 192 states and 200 transitions. [2019-05-23 11:17:12,747 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 106 [2019-05-23 11:17:12,747 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:12,747 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:12,747 INFO L146 ILogger]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:12,747 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:12,747 INFO L146 ILogger]: Analyzing trace with hash 739920520, now seen corresponding path program 10 times [2019-05-23 11:17:12,747 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:12,747 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:12,748 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:12,748 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:12,748 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:12,756 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:13,114 INFO L146 ILogger]: Checked inductivity of 119 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-05-23 11:17:13,114 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:13,114 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:13,123 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:17:13,147 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:17:13,147 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:13,148 INFO L146 ILogger]: Trace formula consists of 167 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:17:13,149 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:13,434 INFO L146 ILogger]: Checked inductivity of 119 backedges. 22 proven. 22 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-05-23 11:17:13,453 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:13,453 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13] total 30 [2019-05-23 11:17:13,454 INFO L146 ILogger]: Interpolant automaton has 30 states [2019-05-23 11:17:13,454 INFO L146 ILogger]: Constructing interpolant automaton starting with 30 interpolants. [2019-05-23 11:17:13,454 INFO L146 ILogger]: CoverageRelationStatistics Valid=116, Invalid=754, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:17:13,454 INFO L146 ILogger]: Start difference. First operand 192 states and 200 transitions. Second operand 30 states. [2019-05-23 11:17:14,632 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:14,632 INFO L146 ILogger]: Finished difference Result 288 states and 298 transitions. [2019-05-23 11:17:14,633 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-05-23 11:17:14,633 INFO L146 ILogger]: Start accepts. Automaton has 30 states. Word has length 105 [2019-05-23 11:17:14,633 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:14,634 INFO L146 ILogger]: With dead ends: 288 [2019-05-23 11:17:14,635 INFO L146 ILogger]: Without dead ends: 176 [2019-05-23 11:17:14,635 INFO L146 ILogger]: 0 DeclaredPredicates, 154 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 757 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=579, Invalid=2961, Unknown=0, NotChecked=0, Total=3540 [2019-05-23 11:17:14,636 INFO L146 ILogger]: Start minimizeSevpa. Operand 176 states. [2019-05-23 11:17:14,644 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 176 to 176. [2019-05-23 11:17:14,644 INFO L146 ILogger]: Start removeUnreachable. Operand 176 states. [2019-05-23 11:17:14,645 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 176 states to 176 states and 183 transitions. [2019-05-23 11:17:14,645 INFO L146 ILogger]: Start accepts. Automaton has 176 states and 183 transitions. Word has length 105 [2019-05-23 11:17:14,645 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:14,645 INFO L146 ILogger]: Abstraction has 176 states and 183 transitions. [2019-05-23 11:17:14,645 INFO L146 ILogger]: Interpolant automaton has 30 states. [2019-05-23 11:17:14,646 INFO L146 ILogger]: Start isEmpty. Operand 176 states and 183 transitions. [2019-05-23 11:17:14,646 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 106 [2019-05-23 11:17:14,646 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:14,647 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:14,647 INFO L146 ILogger]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:14,647 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:14,647 INFO L146 ILogger]: Analyzing trace with hash 1017201908, now seen corresponding path program 11 times [2019-05-23 11:17:14,647 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:14,647 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:14,648 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:14,648 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:14,648 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:14,657 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:14,877 INFO L146 ILogger]: Checked inductivity of 111 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-05-23 11:17:14,878 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:14,878 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:14,886 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:17:14,931 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2019-05-23 11:17:14,931 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:14,932 INFO L146 ILogger]: Trace formula consists of 173 conjuncts, 19 conjunts are in the unsatisfiable core [2019-05-23 11:17:14,934 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:15,204 INFO L146 ILogger]: Checked inductivity of 111 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-05-23 11:17:15,233 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:15,233 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 35 [2019-05-23 11:17:15,233 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:17:15,234 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:17:15,234 INFO L146 ILogger]: CoverageRelationStatistics Valid=221, Invalid=969, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:17:15,234 INFO L146 ILogger]: Start difference. First operand 176 states and 183 transitions. Second operand 35 states. [2019-05-23 11:17:15,886 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:15,886 INFO L146 ILogger]: Finished difference Result 272 states and 281 transitions. [2019-05-23 11:17:15,886 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:17:15,886 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 105 [2019-05-23 11:17:15,887 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:15,887 INFO L146 ILogger]: With dead ends: 272 [2019-05-23 11:17:15,887 INFO L146 ILogger]: Without dead ends: 241 [2019-05-23 11:17:15,888 INFO L146 ILogger]: 0 DeclaredPredicates, 143 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 838 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=601, Invalid=2261, Unknown=0, NotChecked=0, Total=2862 [2019-05-23 11:17:15,888 INFO L146 ILogger]: Start minimizeSevpa. Operand 241 states. [2019-05-23 11:17:15,898 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 241 to 183. [2019-05-23 11:17:15,898 INFO L146 ILogger]: Start removeUnreachable. Operand 183 states. [2019-05-23 11:17:15,899 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 183 states to 183 states and 190 transitions. [2019-05-23 11:17:15,899 INFO L146 ILogger]: Start accepts. Automaton has 183 states and 190 transitions. Word has length 105 [2019-05-23 11:17:15,899 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:15,899 INFO L146 ILogger]: Abstraction has 183 states and 190 transitions. [2019-05-23 11:17:15,900 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:17:15,900 INFO L146 ILogger]: Start isEmpty. Operand 183 states and 190 transitions. [2019-05-23 11:17:15,900 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 106 [2019-05-23 11:17:15,900 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:15,901 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:15,901 INFO L146 ILogger]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:15,901 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:15,901 INFO L146 ILogger]: Analyzing trace with hash -113775608, now seen corresponding path program 12 times [2019-05-23 11:17:15,901 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:15,901 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:15,902 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:15,902 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:15,902 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:15,910 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:16,329 INFO L146 ILogger]: Checked inductivity of 117 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-05-23 11:17:16,329 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:16,329 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:16,339 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:17:16,369 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2019-05-23 11:17:16,369 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:16,370 INFO L146 ILogger]: Trace formula consists of 175 conjuncts, 19 conjunts are in the unsatisfiable core [2019-05-23 11:17:16,371 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:16,818 INFO L146 ILogger]: Checked inductivity of 117 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-05-23 11:17:16,836 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:16,837 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 35 [2019-05-23 11:17:16,837 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:17:16,837 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:17:16,838 INFO L146 ILogger]: CoverageRelationStatistics Valid=222, Invalid=968, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:17:16,838 INFO L146 ILogger]: Start difference. First operand 183 states and 190 transitions. Second operand 35 states. [2019-05-23 11:17:17,467 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:17,468 INFO L146 ILogger]: Finished difference Result 279 states and 288 transitions. [2019-05-23 11:17:17,468 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:17:17,468 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 105 [2019-05-23 11:17:17,469 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:17,470 INFO L146 ILogger]: With dead ends: 279 [2019-05-23 11:17:17,470 INFO L146 ILogger]: Without dead ends: 248 [2019-05-23 11:17:17,470 INFO L146 ILogger]: 0 DeclaredPredicates, 145 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 902 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=634, Invalid=2446, Unknown=0, NotChecked=0, Total=3080 [2019-05-23 11:17:17,471 INFO L146 ILogger]: Start minimizeSevpa. Operand 248 states. [2019-05-23 11:17:17,478 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 248 to 183. [2019-05-23 11:17:17,478 INFO L146 ILogger]: Start removeUnreachable. Operand 183 states. [2019-05-23 11:17:17,478 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 183 states to 183 states and 190 transitions. [2019-05-23 11:17:17,478 INFO L146 ILogger]: Start accepts. Automaton has 183 states and 190 transitions. Word has length 105 [2019-05-23 11:17:17,479 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:17,479 INFO L146 ILogger]: Abstraction has 183 states and 190 transitions. [2019-05-23 11:17:17,479 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:17:17,479 INFO L146 ILogger]: Start isEmpty. Operand 183 states and 190 transitions. [2019-05-23 11:17:17,479 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 106 [2019-05-23 11:17:17,479 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:17,479 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:17,480 INFO L146 ILogger]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:17,480 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:17,480 INFO L146 ILogger]: Analyzing trace with hash -806464652, now seen corresponding path program 13 times [2019-05-23 11:17:17,480 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:17,480 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:17,481 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:17,481 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:17,481 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:17,489 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:17,678 INFO L146 ILogger]: Checked inductivity of 137 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-05-23 11:17:17,678 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:17,678 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:17,688 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:17,714 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:17,715 INFO L146 ILogger]: Trace formula consists of 177 conjuncts, 19 conjunts are in the unsatisfiable core [2019-05-23 11:17:17,716 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:18,001 INFO L146 ILogger]: Checked inductivity of 137 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-05-23 11:17:18,020 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:18,021 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 35 [2019-05-23 11:17:18,021 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:17:18,021 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:17:18,021 INFO L146 ILogger]: CoverageRelationStatistics Valid=229, Invalid=961, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:17:18,022 INFO L146 ILogger]: Start difference. First operand 183 states and 190 transitions. Second operand 35 states. [2019-05-23 11:17:18,684 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:18,684 INFO L146 ILogger]: Finished difference Result 307 states and 317 transitions. [2019-05-23 11:17:18,684 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-05-23 11:17:18,684 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 105 [2019-05-23 11:17:18,685 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:18,685 INFO L146 ILogger]: With dead ends: 307 [2019-05-23 11:17:18,685 INFO L146 ILogger]: Without dead ends: 263 [2019-05-23 11:17:18,686 INFO L146 ILogger]: 0 DeclaredPredicates, 147 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 968 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=697, Invalid=2609, Unknown=0, NotChecked=0, Total=3306 [2019-05-23 11:17:18,686 INFO L146 ILogger]: Start minimizeSevpa. Operand 263 states. [2019-05-23 11:17:18,693 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 263 to 182. [2019-05-23 11:17:18,694 INFO L146 ILogger]: Start removeUnreachable. Operand 182 states. [2019-05-23 11:17:18,694 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 182 states to 182 states and 189 transitions. [2019-05-23 11:17:18,694 INFO L146 ILogger]: Start accepts. Automaton has 182 states and 189 transitions. Word has length 105 [2019-05-23 11:17:18,694 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:18,694 INFO L146 ILogger]: Abstraction has 182 states and 189 transitions. [2019-05-23 11:17:18,694 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:17:18,694 INFO L146 ILogger]: Start isEmpty. Operand 182 states and 189 transitions. [2019-05-23 11:17:18,695 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 109 [2019-05-23 11:17:18,695 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:18,695 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 6, 6, 4, 4, 4, 4, 4, 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] [2019-05-23 11:17:18,695 INFO L146 ILogger]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:18,695 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:18,695 INFO L146 ILogger]: Analyzing trace with hash -312899237, now seen corresponding path program 3 times [2019-05-23 11:17:18,696 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:18,696 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:18,696 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:18,696 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:18,696 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:18,704 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:18,897 INFO L146 ILogger]: Checked inductivity of 196 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-05-23 11:17:18,897 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:18,897 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:18,905 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:17:18,937 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2019-05-23 11:17:18,937 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:18,938 INFO L146 ILogger]: Trace formula consists of 184 conjuncts, 17 conjunts are in the unsatisfiable core [2019-05-23 11:17:18,939 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:19,142 INFO L146 ILogger]: Checked inductivity of 196 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-05-23 11:17:19,160 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:19,161 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 31 [2019-05-23 11:17:19,161 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:17:19,161 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:17:19,161 INFO L146 ILogger]: CoverageRelationStatistics Valid=208, Invalid=722, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:17:19,162 INFO L146 ILogger]: Start difference. First operand 182 states and 189 transitions. Second operand 31 states. [2019-05-23 11:17:19,715 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:19,715 INFO L146 ILogger]: Finished difference Result 313 states and 324 transitions. [2019-05-23 11:17:19,715 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-05-23 11:17:19,715 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 108 [2019-05-23 11:17:19,715 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:19,716 INFO L146 ILogger]: With dead ends: 313 [2019-05-23 11:17:19,717 INFO L146 ILogger]: Without dead ends: 272 [2019-05-23 11:17:19,717 INFO L146 ILogger]: 0 DeclaredPredicates, 147 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 785 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=671, Invalid=2085, Unknown=0, NotChecked=0, Total=2756 [2019-05-23 11:17:19,718 INFO L146 ILogger]: Start minimizeSevpa. Operand 272 states. [2019-05-23 11:17:19,726 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 272 to 199. [2019-05-23 11:17:19,726 INFO L146 ILogger]: Start removeUnreachable. Operand 199 states. [2019-05-23 11:17:19,727 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 199 states to 199 states and 207 transitions. [2019-05-23 11:17:19,727 INFO L146 ILogger]: Start accepts. Automaton has 199 states and 207 transitions. Word has length 108 [2019-05-23 11:17:19,727 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:19,727 INFO L146 ILogger]: Abstraction has 199 states and 207 transitions. [2019-05-23 11:17:19,727 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:17:19,727 INFO L146 ILogger]: Start isEmpty. Operand 199 states and 207 transitions. [2019-05-23 11:17:19,728 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 113 [2019-05-23 11:17:19,728 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:19,728 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:19,729 INFO L146 ILogger]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:19,729 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:19,729 INFO L146 ILogger]: Analyzing trace with hash 157268220, now seen corresponding path program 14 times [2019-05-23 11:17:19,729 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:19,729 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:19,730 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:19,730 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:19,730 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:19,739 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:20,105 INFO L146 ILogger]: Checked inductivity of 140 backedges. 0 proven. 118 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-05-23 11:17:20,105 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:20,105 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:20,115 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:17:20,144 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:17:20,145 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:20,145 INFO L146 ILogger]: Trace formula consists of 183 conjuncts, 21 conjunts are in the unsatisfiable core [2019-05-23 11:17:20,147 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:20,434 INFO L146 ILogger]: Checked inductivity of 140 backedges. 0 proven. 118 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-05-23 11:17:20,453 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:20,453 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 39 [2019-05-23 11:17:20,454 INFO L146 ILogger]: Interpolant automaton has 39 states [2019-05-23 11:17:20,454 INFO L146 ILogger]: Constructing interpolant automaton starting with 39 interpolants. [2019-05-23 11:17:20,454 INFO L146 ILogger]: CoverageRelationStatistics Valid=270, Invalid=1212, Unknown=0, NotChecked=0, Total=1482 [2019-05-23 11:17:20,454 INFO L146 ILogger]: Start difference. First operand 199 states and 207 transitions. Second operand 39 states. [2019-05-23 11:17:21,287 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:21,288 INFO L146 ILogger]: Finished difference Result 302 states and 312 transitions. [2019-05-23 11:17:21,288 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:17:21,288 INFO L146 ILogger]: Start accepts. Automaton has 39 states. Word has length 112 [2019-05-23 11:17:21,288 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:21,289 INFO L146 ILogger]: With dead ends: 302 [2019-05-23 11:17:21,289 INFO L146 ILogger]: Without dead ends: 271 [2019-05-23 11:17:21,290 INFO L146 ILogger]: 0 DeclaredPredicates, 155 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1099 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=764, Invalid=2896, Unknown=0, NotChecked=0, Total=3660 [2019-05-23 11:17:21,290 INFO L146 ILogger]: Start minimizeSevpa. Operand 271 states. [2019-05-23 11:17:21,302 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 271 to 206. [2019-05-23 11:17:21,302 INFO L146 ILogger]: Start removeUnreachable. Operand 206 states. [2019-05-23 11:17:21,303 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 206 states to 206 states and 214 transitions. [2019-05-23 11:17:21,303 INFO L146 ILogger]: Start accepts. Automaton has 206 states and 214 transitions. Word has length 112 [2019-05-23 11:17:21,303 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:21,303 INFO L146 ILogger]: Abstraction has 206 states and 214 transitions. [2019-05-23 11:17:21,303 INFO L146 ILogger]: Interpolant automaton has 39 states. [2019-05-23 11:17:21,304 INFO L146 ILogger]: Start isEmpty. Operand 206 states and 214 transitions. [2019-05-23 11:17:21,304 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 113 [2019-05-23 11:17:21,304 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:21,304 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:21,305 INFO L146 ILogger]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:21,305 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:21,305 INFO L146 ILogger]: Analyzing trace with hash 434549608, now seen corresponding path program 15 times [2019-05-23 11:17:21,305 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:21,305 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:21,306 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:21,306 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:21,306 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:21,315 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:21,593 INFO L146 ILogger]: Checked inductivity of 139 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-05-23 11:17:21,593 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:21,593 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:21,602 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:17:21,636 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-05-23 11:17:21,637 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:21,638 INFO L146 ILogger]: Trace formula consists of 185 conjuncts, 21 conjunts are in the unsatisfiable core [2019-05-23 11:17:21,639 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:21,920 INFO L146 ILogger]: Checked inductivity of 139 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-05-23 11:17:21,938 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:21,938 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 39 [2019-05-23 11:17:21,939 INFO L146 ILogger]: Interpolant automaton has 39 states [2019-05-23 11:17:21,939 INFO L146 ILogger]: Constructing interpolant automaton starting with 39 interpolants. [2019-05-23 11:17:21,939 INFO L146 ILogger]: CoverageRelationStatistics Valid=268, Invalid=1214, Unknown=0, NotChecked=0, Total=1482 [2019-05-23 11:17:21,939 INFO L146 ILogger]: Start difference. First operand 206 states and 214 transitions. Second operand 39 states. [2019-05-23 11:17:22,626 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:22,626 INFO L146 ILogger]: Finished difference Result 324 states and 334 transitions. [2019-05-23 11:17:22,626 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-05-23 11:17:22,626 INFO L146 ILogger]: Start accepts. Automaton has 39 states. Word has length 112 [2019-05-23 11:17:22,627 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:22,628 INFO L146 ILogger]: With dead ends: 324 [2019-05-23 11:17:22,628 INFO L146 ILogger]: Without dead ends: 293 [2019-05-23 11:17:22,629 INFO L146 ILogger]: 0 DeclaredPredicates, 157 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1174 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=790, Invalid=3116, Unknown=0, NotChecked=0, Total=3906 [2019-05-23 11:17:22,629 INFO L146 ILogger]: Start minimizeSevpa. Operand 293 states. [2019-05-23 11:17:22,639 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 293 to 206. [2019-05-23 11:17:22,639 INFO L146 ILogger]: Start removeUnreachable. Operand 206 states. [2019-05-23 11:17:22,639 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 206 states to 206 states and 214 transitions. [2019-05-23 11:17:22,640 INFO L146 ILogger]: Start accepts. Automaton has 206 states and 214 transitions. Word has length 112 [2019-05-23 11:17:22,640 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:22,640 INFO L146 ILogger]: Abstraction has 206 states and 214 transitions. [2019-05-23 11:17:22,640 INFO L146 ILogger]: Interpolant automaton has 39 states. [2019-05-23 11:17:22,640 INFO L146 ILogger]: Start isEmpty. Operand 206 states and 214 transitions. [2019-05-23 11:17:22,641 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 113 [2019-05-23 11:17:22,641 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:22,641 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:22,641 INFO L146 ILogger]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:22,641 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:22,641 INFO L146 ILogger]: Analyzing trace with hash -696427908, now seen corresponding path program 16 times [2019-05-23 11:17:22,642 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:22,642 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:22,642 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:22,642 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:22,642 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:22,649 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:22,914 INFO L146 ILogger]: Checked inductivity of 152 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-05-23 11:17:22,914 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:22,914 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:22,924 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:17:22,951 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:17:22,952 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:22,953 INFO L146 ILogger]: Trace formula consists of 183 conjuncts, 51 conjunts are in the unsatisfiable core [2019-05-23 11:17:22,955 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:23,409 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:17:23,410 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2019-05-23 11:17:23,410 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:17:23,419 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:17:23,419 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:17:23,419 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:32, output treesize:17 [2019-05-23 11:17:23,488 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:17:23,489 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2019-05-23 11:17:23,489 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:17:23,497 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:17:23,497 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:17:23,498 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:32, output treesize:17 [2019-05-23 11:17:23,570 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:17:23,571 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2019-05-23 11:17:23,571 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:17:23,579 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:17:23,580 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:17:23,580 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:32, output treesize:14 [2019-05-23 11:17:23,778 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2019-05-23 11:17:23,778 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:17:23,780 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:17:23,780 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:17:23,781 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:4 [2019-05-23 11:17:23,884 INFO L146 ILogger]: Checked inductivity of 152 backedges. 30 proven. 122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:17:23,902 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:23,902 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 32] total 51 [2019-05-23 11:17:23,903 INFO L146 ILogger]: Interpolant automaton has 51 states [2019-05-23 11:17:23,903 INFO L146 ILogger]: Constructing interpolant automaton starting with 51 interpolants. [2019-05-23 11:17:23,903 INFO L146 ILogger]: CoverageRelationStatistics Valid=215, Invalid=2335, Unknown=0, NotChecked=0, Total=2550 [2019-05-23 11:17:23,903 INFO L146 ILogger]: Start difference. First operand 206 states and 214 transitions. Second operand 51 states. [2019-05-23 11:17:31,135 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:31,136 INFO L146 ILogger]: Finished difference Result 424 states and 437 transitions. [2019-05-23 11:17:31,136 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2019-05-23 11:17:31,136 INFO L146 ILogger]: Start accepts. Automaton has 51 states. Word has length 112 [2019-05-23 11:17:31,136 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:31,138 INFO L146 ILogger]: With dead ends: 424 [2019-05-23 11:17:31,138 INFO L146 ILogger]: Without dead ends: 393 [2019-05-23 11:17:31,141 INFO L146 ILogger]: 0 DeclaredPredicates, 227 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5533 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=2275, Invalid=18605, Unknown=0, NotChecked=0, Total=20880 [2019-05-23 11:17:31,142 INFO L146 ILogger]: Start minimizeSevpa. Operand 393 states. [2019-05-23 11:17:31,157 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 393 to 226. [2019-05-23 11:17:31,157 INFO L146 ILogger]: Start removeUnreachable. Operand 226 states. [2019-05-23 11:17:31,158 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 226 states to 226 states and 233 transitions. [2019-05-23 11:17:31,158 INFO L146 ILogger]: Start accepts. Automaton has 226 states and 233 transitions. Word has length 112 [2019-05-23 11:17:31,158 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:31,159 INFO L146 ILogger]: Abstraction has 226 states and 233 transitions. [2019-05-23 11:17:31,159 INFO L146 ILogger]: Interpolant automaton has 51 states. [2019-05-23 11:17:31,159 INFO L146 ILogger]: Start isEmpty. Operand 226 states and 233 transitions. [2019-05-23 11:17:31,160 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 116 [2019-05-23 11:17:31,160 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:31,160 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 6, 6, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:31,160 INFO L146 ILogger]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:31,160 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:31,160 INFO L146 ILogger]: Analyzing trace with hash 1201608955, now seen corresponding path program 17 times [2019-05-23 11:17:31,161 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:31,161 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:31,161 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:31,161 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:31,162 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:31,170 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:31,475 INFO L146 ILogger]: Checked inductivity of 197 backedges. 0 proven. 149 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-05-23 11:17:31,475 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:31,475 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:31,484 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:17:31,521 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2019-05-23 11:17:31,521 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:31,522 INFO L146 ILogger]: Trace formula consists of 194 conjuncts, 19 conjunts are in the unsatisfiable core [2019-05-23 11:17:31,523 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:32,776 INFO L146 ILogger]: Checked inductivity of 197 backedges. 0 proven. 149 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-05-23 11:17:32,795 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:32,796 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 35 [2019-05-23 11:17:32,796 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:17:32,796 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:17:32,796 INFO L146 ILogger]: CoverageRelationStatistics Valid=242, Invalid=948, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:17:32,797 INFO L146 ILogger]: Start difference. First operand 226 states and 233 transitions. Second operand 35 states. [2019-05-23 11:17:33,444 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:33,445 INFO L146 ILogger]: Finished difference Result 344 states and 353 transitions. [2019-05-23 11:17:33,445 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-05-23 11:17:33,445 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 115 [2019-05-23 11:17:33,445 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:33,446 INFO L146 ILogger]: With dead ends: 344 [2019-05-23 11:17:33,446 INFO L146 ILogger]: Without dead ends: 303 [2019-05-23 11:17:33,447 INFO L146 ILogger]: 0 DeclaredPredicates, 159 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1031 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=790, Invalid=2750, Unknown=0, NotChecked=0, Total=3540 [2019-05-23 11:17:33,447 INFO L146 ILogger]: Start minimizeSevpa. Operand 303 states. [2019-05-23 11:17:33,458 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 303 to 226. [2019-05-23 11:17:33,458 INFO L146 ILogger]: Start removeUnreachable. Operand 226 states. [2019-05-23 11:17:33,459 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 226 states to 226 states and 233 transitions. [2019-05-23 11:17:33,459 INFO L146 ILogger]: Start accepts. Automaton has 226 states and 233 transitions. Word has length 115 [2019-05-23 11:17:33,459 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:33,459 INFO L146 ILogger]: Abstraction has 226 states and 233 transitions. [2019-05-23 11:17:33,459 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:17:33,460 INFO L146 ILogger]: Start isEmpty. Operand 226 states and 233 transitions. [2019-05-23 11:17:33,460 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 116 [2019-05-23 11:17:33,460 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:33,460 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 7, 7, 4, 4, 4, 4, 4, 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] [2019-05-23 11:17:33,460 INFO L146 ILogger]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:33,461 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:33,461 INFO L146 ILogger]: Analyzing trace with hash -2144725401, now seen corresponding path program 4 times [2019-05-23 11:17:33,461 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:33,461 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:33,461 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:33,461 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:33,461 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:33,468 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:33,710 INFO L146 ILogger]: Checked inductivity of 245 backedges. 0 proven. 197 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-05-23 11:17:33,710 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:33,711 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:17:33,721 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:17:33,749 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:17:33,749 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:33,750 INFO L146 ILogger]: Trace formula consists of 192 conjuncts, 44 conjunts are in the unsatisfiable core [2019-05-23 11:17:33,752 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:34,147 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2019-05-23 11:17:34,147 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:17:34,148 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:17:34,148 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:17:34,149 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:4 [2019-05-23 11:17:34,247 INFO L146 ILogger]: Checked inductivity of 245 backedges. 16 proven. 187 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-05-23 11:17:34,274 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:34,274 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 23] total 40 [2019-05-23 11:17:34,275 INFO L146 ILogger]: Interpolant automaton has 40 states [2019-05-23 11:17:34,275 INFO L146 ILogger]: Constructing interpolant automaton starting with 40 interpolants. [2019-05-23 11:17:34,276 INFO L146 ILogger]: CoverageRelationStatistics Valid=153, Invalid=1407, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:17:34,276 INFO L146 ILogger]: Start difference. First operand 226 states and 233 transitions. Second operand 40 states.