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-tiling/tcpy_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:26:47,232 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:26:47,234 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:26:47,245 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:26:47,245 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:26:47,247 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:26:47,248 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:26:47,250 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:26:47,251 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:26:47,252 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:26:47,253 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:26:47,254 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:26:47,254 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:26:47,255 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:26:47,257 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:26:47,257 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:26:47,258 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:26:47,260 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:26:47,262 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:26:47,264 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:26:47,265 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:26:47,266 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:26:47,269 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:26:47,269 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:26:47,269 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:26:47,270 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:26:47,271 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:26:47,272 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:26:47,272 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:26:47,273 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:26:47,274 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:26:47,275 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:26:47,278 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:26:47,278 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:26:47,279 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:26:47,279 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:26:47,279 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:26:47,282 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:26:47,282 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:26:47,284 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:26:47,312 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:26:47,312 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:26:47,317 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:26:47,317 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:26:47,317 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:26:47,317 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:26:47,318 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:26:47,319 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:26:47,319 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:26:47,319 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:26:47,319 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:26:47,320 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:26:47,320 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:26:47,320 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:26:47,320 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:26:47,320 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:26:47,321 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:26:47,322 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:26:47,322 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:26:47,322 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:26:47,323 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:26:47,323 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:26:47,323 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:26:47,323 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:26:47,324 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:26:47,324 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:26:47,324 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:26:47,324 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:26:47,324 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 11:26:47,382 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:26:47,397 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:26:47,400 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:26:47,401 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:26:47,401 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:26:47,402 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-tiling/tcpy_true-unreach-call.i [2019-05-23 11:26:47,462 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/821a3144b/7ddc26750e284cb19bcffd1e9edd1e30/FLAG611fb38e6 [2019-05-23 11:26:47,840 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:26:47,841 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-tiling/tcpy_true-unreach-call.i [2019-05-23 11:26:47,845 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/821a3144b/7ddc26750e284cb19bcffd1e9edd1e30/FLAG611fb38e6 [2019-05-23 11:26:48,223 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/821a3144b/7ddc26750e284cb19bcffd1e9edd1e30 [2019-05-23 11:26:48,231 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:26:48,233 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:26:48,234 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:26:48,234 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:26:48,237 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:26:48,238 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:26:48" (1/1) ... [2019-05-23 11:26:48,241 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1db37edb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:48, skipping insertion in model container [2019-05-23 11:26:48,242 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:26:48" (1/1) ... [2019-05-23 11:26:48,248 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:26:48,264 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:26:48,438 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:26:48,449 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:26:48,476 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:26:48,500 INFO L146 ILogger]: Completed translation [2019-05-23 11:26:48,500 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:48 WrapperNode [2019-05-23 11:26:48,500 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:26:48,501 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:26:48,502 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:26:48,502 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:26:48,512 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:48" (1/1) ... [2019-05-23 11:26:48,522 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:48" (1/1) ... [2019-05-23 11:26:48,554 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:26:48,554 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:26:48,554 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:26:48,554 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:26:48,566 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:48" (1/1) ... [2019-05-23 11:26:48,567 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:48" (1/1) ... [2019-05-23 11:26:48,568 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:48" (1/1) ... [2019-05-23 11:26:48,569 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:48" (1/1) ... [2019-05-23 11:26:48,586 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:48" (1/1) ... [2019-05-23 11:26:48,593 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:48" (1/1) ... [2019-05-23 11:26:48,594 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:48" (1/1) ... [2019-05-23 11:26:48,604 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:26:48,606 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:26:48,606 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:26:48,607 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:26:48,608 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:48" (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 11:26:48,788 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:26:48,788 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:26:48,788 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:26:48,788 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:26:48,788 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:26:48,789 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:26:49,257 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:26:49,258 INFO L146 ILogger]: Removed 8 assume(true) statements. [2019-05-23 11:26:49,259 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:26:49 BoogieIcfgContainer [2019-05-23 11:26:49,259 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:26:49,260 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:26:49,260 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:26:49,263 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:26:49,263 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:26:48" (1/3) ... [2019-05-23 11:26:49,264 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ef4e903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:26:49, skipping insertion in model container [2019-05-23 11:26:49,264 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:48" (2/3) ... [2019-05-23 11:26:49,265 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ef4e903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:26:49, skipping insertion in model container [2019-05-23 11:26:49,265 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:26:49" (3/3) ... [2019-05-23 11:26:49,267 INFO L146 ILogger]: Analyzing ICFG tcpy_true-unreach-call.i [2019-05-23 11:26:49,276 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:26:49,284 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:26:49,299 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:26:49,330 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:26:49,331 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:26:49,331 INFO L146 ILogger]: Hoare is true [2019-05-23 11:26:49,331 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:26:49,331 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:26:49,331 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:26:49,331 INFO L146 ILogger]: Difference is false [2019-05-23 11:26:49,331 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:26:49,332 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:26:49,345 INFO L146 ILogger]: Start isEmpty. Operand 53 states. [2019-05-23 11:26:49,352 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 26 [2019-05-23 11:26:49,352 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:49,354 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 11:26:49,355 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:49,361 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:49,361 INFO L146 ILogger]: Analyzing trace with hash -1972011834, now seen corresponding path program 1 times [2019-05-23 11:26:49,363 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:49,363 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:49,404 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:49,405 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:49,405 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:49,470 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:49,580 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 11:26:49,583 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:26:49,583 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:26:49,586 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:26:49,600 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:26:49,600 INFO L146 ILogger]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:26:49,603 INFO L146 ILogger]: Start difference. First operand 53 states. Second operand 4 states. [2019-05-23 11:26:49,962 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:49,963 INFO L146 ILogger]: Finished difference Result 102 states and 114 transitions. [2019-05-23 11:26:49,963 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:26:49,965 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 25 [2019-05-23 11:26:49,965 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:49,979 INFO L146 ILogger]: With dead ends: 102 [2019-05-23 11:26:49,979 INFO L146 ILogger]: Without dead ends: 62 [2019-05-23 11:26:49,983 INFO L146 ILogger]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:26:50,004 INFO L146 ILogger]: Start minimizeSevpa. Operand 62 states. [2019-05-23 11:26:50,025 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 62 to 41. [2019-05-23 11:26:50,027 INFO L146 ILogger]: Start removeUnreachable. Operand 41 states. [2019-05-23 11:26:50,028 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2019-05-23 11:26:50,030 INFO L146 ILogger]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 25 [2019-05-23 11:26:50,030 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:50,030 INFO L146 ILogger]: Abstraction has 41 states and 42 transitions. [2019-05-23 11:26:50,030 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:26:50,031 INFO L146 ILogger]: Start isEmpty. Operand 41 states and 42 transitions. [2019-05-23 11:26:50,032 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 36 [2019-05-23 11:26:50,032 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:50,032 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] [2019-05-23 11:26:50,032 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:50,033 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:50,033 INFO L146 ILogger]: Analyzing trace with hash 850021676, now seen corresponding path program 1 times [2019-05-23 11:26:50,033 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:50,033 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:50,034 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:50,035 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:50,035 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:50,113 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:50,654 WARN L146 ILogger]: Spent 199.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 22 [2019-05-23 11:26:50,961 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 11:26:50,962 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:50,962 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:26:50,990 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:51,024 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:51,028 INFO L146 ILogger]: Trace formula consists of 69 conjuncts, 27 conjunts are in the unsatisfiable core [2019-05-23 11:26:51,035 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:51,113 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-05-23 11:26:51,114 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:51,184 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:51,185 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:51,185 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-05-23 11:26:51,305 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:51,306 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-05-23 11:26:51,307 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:51,407 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:51,407 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:51,408 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:11 [2019-05-23 11:26:51,696 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 15 treesize of output 15 [2019-05-23 11:26:51,697 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:51,725 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:51,726 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:51,726 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2019-05-23 11:26:51,840 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2019-05-23 11:26:51,841 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:51,848 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:51,849 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 11:26:51,849 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:30, output treesize:3 [2019-05-23 11:26:51,913 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 11:26:51,944 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:51,944 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 16 [2019-05-23 11:26:51,948 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:26:51,951 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:26:51,952 INFO L146 ILogger]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:26:51,952 INFO L146 ILogger]: Start difference. First operand 41 states and 42 transitions. Second operand 16 states. [2019-05-23 11:26:53,535 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:53,536 INFO L146 ILogger]: Finished difference Result 100 states and 102 transitions. [2019-05-23 11:26:53,537 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-05-23 11:26:53,537 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 35 [2019-05-23 11:26:53,538 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:53,539 INFO L146 ILogger]: With dead ends: 100 [2019-05-23 11:26:53,539 INFO L146 ILogger]: Without dead ends: 98 [2019-05-23 11:26:53,541 INFO L146 ILogger]: 0 DeclaredPredicates, 64 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=265, Invalid=791, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:26:53,542 INFO L146 ILogger]: Start minimizeSevpa. Operand 98 states. [2019-05-23 11:26:53,549 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 98 to 59. [2019-05-23 11:26:53,550 INFO L146 ILogger]: Start removeUnreachable. Operand 59 states. [2019-05-23 11:26:53,551 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2019-05-23 11:26:53,551 INFO L146 ILogger]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 35 [2019-05-23 11:26:53,551 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:53,552 INFO L146 ILogger]: Abstraction has 59 states and 61 transitions. [2019-05-23 11:26:53,552 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:26:53,552 INFO L146 ILogger]: Start isEmpty. Operand 59 states and 61 transitions. [2019-05-23 11:26:53,553 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 46 [2019-05-23 11:26:53,553 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:53,554 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:53,554 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:53,554 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:53,554 INFO L146 ILogger]: Analyzing trace with hash 1312445970, now seen corresponding path program 2 times [2019-05-23 11:26:53,555 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:53,555 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:53,556 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:53,556 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:53,556 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:53,593 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:54,790 INFO L146 ILogger]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:54,790 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:54,790 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 11:26:54,799 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:26:54,837 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:26:54,837 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:54,839 INFO L146 ILogger]: Trace formula consists of 83 conjuncts, 33 conjunts are in the unsatisfiable core [2019-05-23 11:26:54,842 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:54,860 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-05-23 11:26:54,861 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:54,870 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:54,870 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:54,870 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-05-23 11:26:54,893 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:54,894 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-05-23 11:26:54,894 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:54,899 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:54,899 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:54,900 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:14 [2019-05-23 11:26:55,120 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 23 treesize of output 23 [2019-05-23 11:26:55,121 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:55,134 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:55,135 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:55,136 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:45, output treesize:41 [2019-05-23 11:26:55,391 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:55,394 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2019-05-23 11:26:55,395 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:55,411 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:55,412 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-05-23 11:26:55,412 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:54, output treesize:35 [2019-05-23 11:26:56,404 WARN L146 ILogger]: Spent 483.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2019-05-23 11:26:56,415 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:26:56,416 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 29 [2019-05-23 11:26:56,417 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:56,434 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:56,443 INFO L146 ILogger]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:56,444 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:50, output treesize:22 [2019-05-23 11:26:56,545 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2019-05-23 11:26:56,546 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:56,550 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:56,551 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 11:26:56,551 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:30, output treesize:3 [2019-05-23 11:26:56,613 INFO L146 ILogger]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:56,639 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:56,640 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19] total 35 [2019-05-23 11:26:56,640 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:26:56,640 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:26:56,641 INFO L146 ILogger]: CoverageRelationStatistics Valid=170, Invalid=1019, Unknown=1, NotChecked=0, Total=1190 [2019-05-23 11:26:56,642 INFO L146 ILogger]: Start difference. First operand 59 states and 61 transitions. Second operand 35 states. [2019-05-23 11:26:58,446 WARN L146 ILogger]: Spent 1.07 s on a formula simplification. DAG size of input: 39 DAG size of output: 33 [2019-05-23 11:26:58,966 WARN L146 ILogger]: Spent 490.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2019-05-23 11:27:03,553 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:03,554 INFO L146 ILogger]: Finished difference Result 78 states and 80 transitions. [2019-05-23 11:27:03,554 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-05-23 11:27:03,555 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 45 [2019-05-23 11:27:03,556 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:03,557 INFO L146 ILogger]: With dead ends: 78 [2019-05-23 11:27:03,558 INFO L146 ILogger]: Without dead ends: 76 [2019-05-23 11:27:03,560 INFO L146 ILogger]: 0 DeclaredPredicates, 89 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 816 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=605, Invalid=2582, Unknown=5, NotChecked=0, Total=3192 [2019-05-23 11:27:03,560 INFO L146 ILogger]: Start minimizeSevpa. Operand 76 states. [2019-05-23 11:27:03,566 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 76 to 48. [2019-05-23 11:27:03,566 INFO L146 ILogger]: Start removeUnreachable. Operand 48 states. [2019-05-23 11:27:03,567 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2019-05-23 11:27:03,567 INFO L146 ILogger]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 45 [2019-05-23 11:27:03,568 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:03,568 INFO L146 ILogger]: Abstraction has 48 states and 49 transitions. [2019-05-23 11:27:03,568 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:27:03,568 INFO L146 ILogger]: Start isEmpty. Operand 48 states and 49 transitions. [2019-05-23 11:27:03,569 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 48 [2019-05-23 11:27:03,569 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:03,570 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:27:03,570 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:03,570 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:03,570 INFO L146 ILogger]: Analyzing trace with hash -1379338508, now seen corresponding path program 1 times [2019-05-23 11:27:03,570 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:03,571 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:03,571 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:03,572 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:03,572 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:03,593 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:04,672 WARN L146 ILogger]: Spent 100.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 34 [2019-05-23 11:27:04,830 WARN L146 ILogger]: Spent 137.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 39 [2019-05-23 11:27:05,084 WARN L146 ILogger]: Spent 101.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 29 [2019-05-23 11:27:05,381 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 11:27:05,382 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:05,382 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 11:27:05,390 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:27:05,416 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:05,417 INFO L146 ILogger]: Trace formula consists of 87 conjuncts, 33 conjunts are in the unsatisfiable core [2019-05-23 11:27:05,419 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:05,437 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-05-23 11:27:05,437 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:05,448 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:05,448 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:05,449 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-05-23 11:27:05,479 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:05,480 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-05-23 11:27:05,480 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:05,484 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:05,484 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:05,484 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:11 [2019-05-23 11:27:05,634 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 31 treesize of output 31 [2019-05-23 11:27:05,634 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:05,647 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:05,647 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:05,648 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:50, output treesize:46 [2019-05-23 11:27:05,703 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:05,704 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 93 [2019-05-23 11:27:05,705 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:05,743 INFO L146 ILogger]: treesize reduction 48, result has 54.3 percent of original size [2019-05-23 11:27:05,744 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 11:27:05,744 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:61, output treesize:46 [2019-05-23 11:27:06,719 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:27:06,724 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:06,724 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 28 [2019-05-23 11:27:06,725 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-05-23 11:27:06,748 INFO L146 ILogger]: treesize reduction 15, result has 63.4 percent of original size [2019-05-23 11:27:06,749 INFO L146 ILogger]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:06,750 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 6 variables, input treesize:65, output treesize:3 [2019-05-23 11:27:06,804 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 11:27:06,822 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:06,822 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 35 [2019-05-23 11:27:06,823 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:27:06,823 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:27:06,824 INFO L146 ILogger]: CoverageRelationStatistics Valid=141, Invalid=1049, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:27:06,824 INFO L146 ILogger]: Start difference. First operand 48 states and 49 transitions. Second operand 35 states. [2019-05-23 11:27:10,241 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:10,242 INFO L146 ILogger]: Finished difference Result 113 states and 115 transitions. [2019-05-23 11:27:10,242 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-05-23 11:27:10,242 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 47 [2019-05-23 11:27:10,243 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:10,245 INFO L146 ILogger]: With dead ends: 113 [2019-05-23 11:27:10,245 INFO L146 ILogger]: Without dead ends: 111 [2019-05-23 11:27:10,247 INFO L146 ILogger]: 0 DeclaredPredicates, 97 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=754, Invalid=3152, Unknown=0, NotChecked=0, Total=3906 [2019-05-23 11:27:10,247 INFO L146 ILogger]: Start minimizeSevpa. Operand 111 states. [2019-05-23 11:27:10,254 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 111 to 71. [2019-05-23 11:27:10,254 INFO L146 ILogger]: Start removeUnreachable. Operand 71 states. [2019-05-23 11:27:10,255 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2019-05-23 11:27:10,256 INFO L146 ILogger]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 47 [2019-05-23 11:27:10,256 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:10,256 INFO L146 ILogger]: Abstraction has 71 states and 73 transitions. [2019-05-23 11:27:10,256 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:27:10,256 INFO L146 ILogger]: Start isEmpty. Operand 71 states and 73 transitions. [2019-05-23 11:27:10,257 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 58 [2019-05-23 11:27:10,257 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:10,258 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:10,258 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:10,258 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:10,258 INFO L146 ILogger]: Analyzing trace with hash 1397020378, now seen corresponding path program 2 times [2019-05-23 11:27:10,259 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:10,259 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:10,259 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:10,260 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:27:10,260 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:10,276 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:10,842 INFO L146 ILogger]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:10,843 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:10,843 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 11:27:10,851 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:27:10,875 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:27:10,875 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:10,876 INFO L146 ILogger]: Trace formula consists of 101 conjuncts, 35 conjunts are in the unsatisfiable core [2019-05-23 11:27:10,879 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:10,921 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-05-23 11:27:10,921 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:10,979 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:10,980 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:10,980 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-05-23 11:27:10,991 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:10,992 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-05-23 11:27:10,992 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:10,997 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:10,997 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:10,997 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:11 [2019-05-23 11:27:11,059 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 23 treesize of output 23 [2019-05-23 11:27:11,060 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:11,069 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:11,070 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-05-23 11:27:11,071 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:40, output treesize:36 [2019-05-23 11:27:11,281 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:27:11,282 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 10 [2019-05-23 11:27:11,282 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:11,287 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:11,288 INFO L146 ILogger]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:11,288 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:40, output treesize:3 [2019-05-23 11:27:11,347 INFO L146 ILogger]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:11,365 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:11,365 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 25 [2019-05-23 11:27:11,366 INFO L146 ILogger]: Interpolant automaton has 25 states [2019-05-23 11:27:11,366 INFO L146 ILogger]: Constructing interpolant automaton starting with 25 interpolants. [2019-05-23 11:27:11,366 INFO L146 ILogger]: CoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:27:11,367 INFO L146 ILogger]: Start difference. First operand 71 states and 73 transitions. Second operand 25 states. [2019-05-23 11:27:13,218 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:13,219 INFO L146 ILogger]: Finished difference Result 140 states and 143 transitions. [2019-05-23 11:27:13,219 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-05-23 11:27:13,219 INFO L146 ILogger]: Start accepts. Automaton has 25 states. Word has length 57 [2019-05-23 11:27:13,220 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:13,221 INFO L146 ILogger]: With dead ends: 140 [2019-05-23 11:27:13,221 INFO L146 ILogger]: Without dead ends: 138 [2019-05-23 11:27:13,222 INFO L146 ILogger]: 0 DeclaredPredicates, 99 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=486, Invalid=2064, Unknown=0, NotChecked=0, Total=2550 [2019-05-23 11:27:13,223 INFO L146 ILogger]: Start minimizeSevpa. Operand 138 states. [2019-05-23 11:27:13,230 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 138 to 81. [2019-05-23 11:27:13,230 INFO L146 ILogger]: Start removeUnreachable. Operand 81 states. [2019-05-23 11:27:13,231 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 81 states to 81 states and 84 transitions. [2019-05-23 11:27:13,231 INFO L146 ILogger]: Start accepts. Automaton has 81 states and 84 transitions. Word has length 57 [2019-05-23 11:27:13,232 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:13,232 INFO L146 ILogger]: Abstraction has 81 states and 84 transitions. [2019-05-23 11:27:13,232 INFO L146 ILogger]: Interpolant automaton has 25 states. [2019-05-23 11:27:13,232 INFO L146 ILogger]: Start isEmpty. Operand 81 states and 84 transitions. [2019-05-23 11:27:13,233 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 60 [2019-05-23 11:27:13,233 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:13,234 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 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 11:27:13,234 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:13,234 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:13,234 INFO L146 ILogger]: Analyzing trace with hash 1099904188, now seen corresponding path program 3 times [2019-05-23 11:27:13,234 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:13,235 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:13,235 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:13,236 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:13,236 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:13,245 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:13,491 WARN L146 ILogger]: Spent 102.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 5 [2019-05-23 11:27:13,962 WARN L146 ILogger]: Spent 285.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 9 [2019-05-23 11:27:14,247 INFO L146 ILogger]: Checked inductivity of 27 backedges. 14 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:14,248 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:14,248 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 11:27:14,256 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:27:14,278 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:27:14,278 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:14,279 INFO L146 ILogger]: Trace formula consists of 105 conjuncts, 13 conjunts are in the unsatisfiable core [2019-05-23 11:27:14,283 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:14,563 INFO L146 ILogger]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:14,581 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:14,581 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2019-05-23 11:27:14,582 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:27:14,582 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:27:14,583 INFO L146 ILogger]: CoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:27:14,583 INFO L146 ILogger]: Start difference. First operand 81 states and 84 transitions. Second operand 23 states. [2019-05-23 11:27:15,278 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:15,278 INFO L146 ILogger]: Finished difference Result 132 states and 135 transitions. [2019-05-23 11:27:15,279 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-05-23 11:27:15,279 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 59 [2019-05-23 11:27:15,279 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:15,281 INFO L146 ILogger]: With dead ends: 132 [2019-05-23 11:27:15,281 INFO L146 ILogger]: Without dead ends: 92 [2019-05-23 11:27:15,282 INFO L146 ILogger]: 0 DeclaredPredicates, 80 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=229, Invalid=763, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:27:15,283 INFO L146 ILogger]: Start minimizeSevpa. Operand 92 states. [2019-05-23 11:27:15,288 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 92 to 81. [2019-05-23 11:27:15,289 INFO L146 ILogger]: Start removeUnreachable. Operand 81 states. [2019-05-23 11:27:15,290 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2019-05-23 11:27:15,290 INFO L146 ILogger]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 59 [2019-05-23 11:27:15,290 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:15,290 INFO L146 ILogger]: Abstraction has 81 states and 83 transitions. [2019-05-23 11:27:15,291 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:27:15,291 INFO L146 ILogger]: Start isEmpty. Operand 81 states and 83 transitions. [2019-05-23 11:27:15,292 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 68 [2019-05-23 11:27:15,292 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:15,292 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-05-23 11:27:15,292 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:15,293 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:15,293 INFO L146 ILogger]: Analyzing trace with hash -1741779136, now seen corresponding path program 4 times [2019-05-23 11:27:15,293 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:15,293 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:15,294 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:15,294 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:15,294 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:15,309 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:15,674 WARN L146 ILogger]: Spent 124.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 18 [2019-05-23 11:27:16,551 INFO L146 ILogger]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:16,551 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:16,552 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 11:27:16,562 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:27:16,582 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:27:16,583 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:16,584 INFO L146 ILogger]: Trace formula consists of 113 conjuncts, 41 conjunts are in the unsatisfiable core [2019-05-23 11:27:16,597 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:16,636 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-05-23 11:27:16,637 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:16,648 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:16,648 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:16,648 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-05-23 11:27:16,662 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:16,662 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-05-23 11:27:16,663 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:16,672 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:16,672 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:16,672 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:14 [2019-05-23 11:27:17,389 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 23 treesize of output 23 [2019-05-23 11:27:17,390 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:17,406 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:17,406 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:17,407 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:45, output treesize:41 [2019-05-23 11:27:17,634 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:17,635 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2019-05-23 11:27:17,636 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:17,860 WARN L146 ILogger]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2019-05-23 11:27:17,861 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:17,862 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-05-23 11:27:17,862 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:58, output treesize:39 [2019-05-23 11:27:19,375 WARN L146 ILogger]: Spent 768.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2019-05-23 11:27:19,389 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:19,390 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2019-05-23 11:27:19,391 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:19,406 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:19,408 INFO L146 ILogger]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:19,408 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:54, output treesize:26 [2019-05-23 11:27:19,508 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2019-05-23 11:27:19,509 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:19,511 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:19,512 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 11:27:19,512 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:30, output treesize:3 [2019-05-23 11:27:19,571 INFO L146 ILogger]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:19,590 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:19,591 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 23] total 40 [2019-05-23 11:27:19,591 INFO L146 ILogger]: Interpolant automaton has 40 states [2019-05-23 11:27:19,591 INFO L146 ILogger]: Constructing interpolant automaton starting with 40 interpolants. [2019-05-23 11:27:19,592 INFO L146 ILogger]: CoverageRelationStatistics Valid=185, Invalid=1374, Unknown=1, NotChecked=0, Total=1560 [2019-05-23 11:27:19,592 INFO L146 ILogger]: Start difference. First operand 81 states and 83 transitions. Second operand 40 states. [2019-05-23 11:27:25,316 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:25,316 INFO L146 ILogger]: Finished difference Result 112 states and 114 transitions. [2019-05-23 11:27:25,317 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-05-23 11:27:25,317 INFO L146 ILogger]: Start accepts. Automaton has 40 states. Word has length 67 [2019-05-23 11:27:25,318 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:25,318 INFO L146 ILogger]: With dead ends: 112 [2019-05-23 11:27:25,319 INFO L146 ILogger]: Without dead ends: 110 [2019-05-23 11:27:25,320 INFO L146 ILogger]: 0 DeclaredPredicates, 122 GetRequests, 51 SyntacticMatches, 4 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1263 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=747, Invalid=3942, Unknown=3, NotChecked=0, Total=4692 [2019-05-23 11:27:25,321 INFO L146 ILogger]: Start minimizeSevpa. Operand 110 states. [2019-05-23 11:27:25,326 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 110 to 70. [2019-05-23 11:27:25,327 INFO L146 ILogger]: Start removeUnreachable. Operand 70 states. [2019-05-23 11:27:25,327 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2019-05-23 11:27:25,328 INFO L146 ILogger]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 67 [2019-05-23 11:27:25,328 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:25,328 INFO L146 ILogger]: Abstraction has 70 states and 71 transitions. [2019-05-23 11:27:25,328 INFO L146 ILogger]: Interpolant automaton has 40 states. [2019-05-23 11:27:25,328 INFO L146 ILogger]: Start isEmpty. Operand 70 states and 71 transitions. [2019-05-23 11:27:25,329 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 70 [2019-05-23 11:27:25,329 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:25,330 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:27:25,330 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:25,330 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:25,330 INFO L146 ILogger]: Analyzing trace with hash -219386974, now seen corresponding path program 5 times [2019-05-23 11:27:25,330 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:25,331 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:25,331 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:25,331 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:25,332 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:25,355 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:25,689 WARN L146 ILogger]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2019-05-23 11:27:26,013 WARN L146 ILogger]: Spent 249.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 13 [2019-05-23 11:27:26,479 WARN L146 ILogger]: Spent 200.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 24 [2019-05-23 11:27:27,709 INFO L146 ILogger]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:27,710 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:27,710 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 11:27:27,720 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:27:27,758 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2019-05-23 11:27:27,758 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:27,759 INFO L146 ILogger]: Trace formula consists of 119 conjuncts, 45 conjunts are in the unsatisfiable core [2019-05-23 11:27:27,762 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:27,773 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-05-23 11:27:27,773 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:27,781 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:27,781 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:27,781 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-05-23 11:27:27,790 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:27,791 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-05-23 11:27:27,791 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:27,800 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:27,800 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:27,800 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:14 [2019-05-23 11:27:28,130 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 31 treesize of output 31 [2019-05-23 11:27:28,130 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:28,144 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:28,144 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:28,145 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:55, output treesize:51 [2019-05-23 11:27:28,213 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:28,214 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 45 [2019-05-23 11:27:28,215 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:28,233 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:28,233 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 11:27:28,234 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:66, output treesize:51 [2019-05-23 11:27:30,407 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:27:30,408 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 10 [2019-05-23 11:27:30,408 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:30,422 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:30,423 INFO L146 ILogger]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:30,423 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:53, output treesize:3 [2019-05-23 11:27:30,640 INFO L146 ILogger]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:30,659 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:30,659 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24] total 43 [2019-05-23 11:27:30,659 INFO L146 ILogger]: Interpolant automaton has 43 states [2019-05-23 11:27:30,659 INFO L146 ILogger]: Constructing interpolant automaton starting with 43 interpolants. [2019-05-23 11:27:30,660 INFO L146 ILogger]: CoverageRelationStatistics Valid=168, Invalid=1638, Unknown=0, NotChecked=0, Total=1806 [2019-05-23 11:27:30,661 INFO L146 ILogger]: Start difference. First operand 70 states and 71 transitions. Second operand 43 states. [2019-05-23 11:27:36,926 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:36,927 INFO L146 ILogger]: Finished difference Result 143 states and 145 transitions. [2019-05-23 11:27:36,927 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-05-23 11:27:36,927 INFO L146 ILogger]: Start accepts. Automaton has 43 states. Word has length 69 [2019-05-23 11:27:36,928 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:36,929 INFO L146 ILogger]: With dead ends: 143 [2019-05-23 11:27:36,929 INFO L146 ILogger]: Without dead ends: 141 [2019-05-23 11:27:36,932 INFO L146 ILogger]: 0 DeclaredPredicates, 132 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1464 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=912, Invalid=5249, Unknown=1, NotChecked=0, Total=6162 [2019-05-23 11:27:36,932 INFO L146 ILogger]: Start minimizeSevpa. Operand 141 states. [2019-05-23 11:27:36,940 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 141 to 93. [2019-05-23 11:27:36,940 INFO L146 ILogger]: Start removeUnreachable. Operand 93 states. [2019-05-23 11:27:36,941 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 93 states to 93 states and 95 transitions. [2019-05-23 11:27:36,942 INFO L146 ILogger]: Start accepts. Automaton has 93 states and 95 transitions. Word has length 69 [2019-05-23 11:27:36,942 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:36,942 INFO L146 ILogger]: Abstraction has 93 states and 95 transitions. [2019-05-23 11:27:36,942 INFO L146 ILogger]: Interpolant automaton has 43 states. [2019-05-23 11:27:36,942 INFO L146 ILogger]: Start isEmpty. Operand 93 states and 95 transitions. [2019-05-23 11:27:36,944 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 80 [2019-05-23 11:27:36,944 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:36,944 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-05-23 11:27:36,944 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:36,944 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:36,945 INFO L146 ILogger]: Analyzing trace with hash 1463204616, now seen corresponding path program 6 times [2019-05-23 11:27:36,945 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:36,945 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:36,946 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:36,946 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:36,946 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:36,959 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:37,813 INFO L146 ILogger]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:37,813 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:37,813 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 11:27:37,829 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:27:37,859 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2019-05-23 11:27:37,859 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:37,860 INFO L146 ILogger]: Trace formula consists of 133 conjuncts, 43 conjunts are in the unsatisfiable core [2019-05-23 11:27:37,864 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:37,876 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-05-23 11:27:37,877 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:37,882 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:37,883 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:37,883 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-05-23 11:27:37,897 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:37,898 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-05-23 11:27:37,898 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:37,907 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:37,908 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:37,908 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:11 [2019-05-23 11:27:37,999 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 23 treesize of output 23 [2019-05-23 11:27:37,999 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:38,009 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:38,010 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-05-23 11:27:38,011 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:40, output treesize:36 [2019-05-23 11:27:38,713 WARN L146 ILogger]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2019-05-23 11:27:39,374 WARN L146 ILogger]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2019-05-23 11:27:39,623 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:27:39,624 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 10 [2019-05-23 11:27:39,625 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:39,630 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:39,631 INFO L146 ILogger]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:39,631 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:40, output treesize:3 [2019-05-23 11:27:39,705 INFO L146 ILogger]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:39,724 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:39,725 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 31 [2019-05-23 11:27:39,725 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:27:39,725 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:27:39,726 INFO L146 ILogger]: CoverageRelationStatistics Valid=100, Invalid=830, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:27:39,726 INFO L146 ILogger]: Start difference. First operand 93 states and 95 transitions. Second operand 31 states. [2019-05-23 11:27:40,820 WARN L146 ILogger]: Spent 184.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2019-05-23 11:27:42,269 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:42,269 INFO L146 ILogger]: Finished difference Result 174 states and 177 transitions. [2019-05-23 11:27:42,269 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-05-23 11:27:42,269 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 79 [2019-05-23 11:27:42,270 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:42,271 INFO L146 ILogger]: With dead ends: 174 [2019-05-23 11:27:42,271 INFO L146 ILogger]: Without dead ends: 172 [2019-05-23 11:27:42,272 INFO L146 ILogger]: 0 DeclaredPredicates, 132 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 854 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=611, Invalid=3421, Unknown=0, NotChecked=0, Total=4032 [2019-05-23 11:27:42,273 INFO L146 ILogger]: Start minimizeSevpa. Operand 172 states. [2019-05-23 11:27:42,280 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 172 to 103. [2019-05-23 11:27:42,280 INFO L146 ILogger]: Start removeUnreachable. Operand 103 states. [2019-05-23 11:27:42,281 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 103 states to 103 states and 106 transitions. [2019-05-23 11:27:42,281 INFO L146 ILogger]: Start accepts. Automaton has 103 states and 106 transitions. Word has length 79 [2019-05-23 11:27:42,281 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:42,281 INFO L146 ILogger]: Abstraction has 103 states and 106 transitions. [2019-05-23 11:27:42,281 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:27:42,281 INFO L146 ILogger]: Start isEmpty. Operand 103 states and 106 transitions. [2019-05-23 11:27:42,283 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 82 [2019-05-23 11:27:42,283 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:42,283 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2019-05-23 11:27:42,283 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:42,284 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:42,284 INFO L146 ILogger]: Analyzing trace with hash 1714623594, now seen corresponding path program 7 times [2019-05-23 11:27:42,284 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:42,284 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:42,285 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:42,285 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:42,285 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:42,300 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:43,150 WARN L146 ILogger]: Spent 140.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 34 [2019-05-23 11:27:43,361 WARN L146 ILogger]: Spent 170.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 47 [2019-05-23 11:27:43,530 WARN L146 ILogger]: Spent 139.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 52 [2019-05-23 11:27:43,704 WARN L146 ILogger]: Spent 136.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 53 [2019-05-23 11:27:43,866 WARN L146 ILogger]: Spent 122.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 47 [2019-05-23 11:27:44,104 WARN L146 ILogger]: Spent 128.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 46 [2019-05-23 11:27:46,152 INFO L146 ILogger]: Checked inductivity of 69 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:46,153 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:46,153 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 11:27:46,163 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:27:46,187 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:46,189 INFO L146 ILogger]: Trace formula consists of 137 conjuncts, 50 conjunts are in the unsatisfiable core [2019-05-23 11:27:46,192 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:46,208 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-05-23 11:27:46,209 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:46,220 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:46,221 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:46,221 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-05-23 11:27:46,273 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:46,273 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-05-23 11:27:46,274 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:46,284 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:46,284 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:46,285 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:14 [2019-05-23 11:27:46,586 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 31 treesize of output 31 [2019-05-23 11:27:46,587 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:46,602 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:46,603 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:46,603 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:53, output treesize:49 [2019-05-23 11:27:46,673 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:46,675 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 45 [2019-05-23 11:27:46,675 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:46,692 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:46,693 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 11:27:46,693 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:64, output treesize:49 [2019-05-23 11:27:46,882 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:27:46,884 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 47 [2019-05-23 11:27:46,885 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:46,907 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:46,907 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 11:27:46,908 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:66, output treesize:47 [2019-05-23 11:27:46,932 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:46,932 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 88 [2019-05-23 11:27:46,933 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:46,983 INFO L146 ILogger]: treesize reduction 30, result has 70.9 percent of original size [2019-05-23 11:27:46,983 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 11:27:46,983 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:62, output treesize:62