java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/array-examples/standard_two_index_05_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:20:17,149 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:20:17,151 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:20:17,169 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:20:17,169 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:20:17,170 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:20:17,172 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:20:17,173 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:20:17,175 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:20:17,176 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:20:17,177 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:20:17,177 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:20:17,178 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:20:17,179 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:20:17,180 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:20:17,181 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:20:17,183 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:20:17,185 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:20:17,187 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:20:17,196 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:20:17,198 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:20:17,200 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:20:17,202 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:20:17,202 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:20:17,204 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:20:17,205 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:20:17,205 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:20:17,206 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:20:17,207 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:20:17,207 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:20:17,208 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:20:17,209 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:20:17,210 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:20:17,210 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:20:17,211 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:20:17,211 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:20:17,211 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:20:17,212 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:20:17,213 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:20:17,213 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:20:17,228 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:20:17,228 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:20:17,229 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:20:17,230 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:20:17,230 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:20:17,230 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:20:17,230 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:20:17,230 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:20:17,231 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:20:17,231 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:20:17,231 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:20:17,231 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:20:17,231 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:20:17,232 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:20:17,232 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:20:17,232 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:20:17,232 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:20:17,232 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:20:17,233 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:20:17,233 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:20:17,233 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:20:17,233 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:20:17,233 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:20:17,234 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:20:17,234 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:20:17,234 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:20:17,234 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:20:17,234 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:20:17,235 INFO L146 ILogger]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Command for external solver -> z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement [2019-05-23 11:20:17,276 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:20:17,289 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:20:17,292 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:20:17,294 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:20:17,294 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:20:17,295 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_two_index_05_true-unreach-call.i [2019-05-23 11:20:17,350 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce3b6b60a/8108d22c0a5842c8b729a955afcf789f/FLAG70a0505bd [2019-05-23 11:20:17,749 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:20:17,750 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_two_index_05_true-unreach-call.i [2019-05-23 11:20:17,756 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce3b6b60a/8108d22c0a5842c8b729a955afcf789f/FLAG70a0505bd [2019-05-23 11:20:18,135 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce3b6b60a/8108d22c0a5842c8b729a955afcf789f [2019-05-23 11:20:18,145 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:20:18,147 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:20:18,149 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:20:18,151 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:20:18,155 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:20:18,156 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:20:18" (1/1) ... [2019-05-23 11:20:18,159 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d8692e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:18, skipping insertion in model container [2019-05-23 11:20:18,159 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:20:18" (1/1) ... [2019-05-23 11:20:18,167 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:20:18,188 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:20:18,382 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:20:18,386 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:20:18,412 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:20:18,440 INFO L146 ILogger]: Completed translation [2019-05-23 11:20:18,441 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:18 WrapperNode [2019-05-23 11:20:18,441 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:20:18,442 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:20:18,442 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:20:18,442 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:20:18,452 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:18" (1/1) ... [2019-05-23 11:20:18,467 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:18" (1/1) ... [2019-05-23 11:20:18,487 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:20:18,487 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:20:18,487 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:20:18,487 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:20:18,495 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:18" (1/1) ... [2019-05-23 11:20:18,496 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:18" (1/1) ... [2019-05-23 11:20:18,498 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:18" (1/1) ... [2019-05-23 11:20:18,498 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:18" (1/1) ... [2019-05-23 11:20:18,503 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:18" (1/1) ... [2019-05-23 11:20:18,509 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:18" (1/1) ... [2019-05-23 11:20:18,510 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:18" (1/1) ... [2019-05-23 11:20:18,512 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:20:18,512 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:20:18,513 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:20:18,513 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:20:18,514 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 [2019-05-23 11:20:18,657 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:20:18,657 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:20:18,658 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:20:18,658 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:20:18,658 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:20:18,658 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:20:19,069 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:20:19,069 INFO L146 ILogger]: Removed 9 assume(true) statements. [2019-05-23 11:20:19,070 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:20:19 BoogieIcfgContainer [2019-05-23 11:20:19,070 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:20:19,071 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:20:19,071 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:20:19,074 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:20:19,075 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:20:18" (1/3) ... [2019-05-23 11:20:19,076 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54608054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:20:19, skipping insertion in model container [2019-05-23 11:20:19,076 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:18" (2/3) ... [2019-05-23 11:20:19,076 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54608054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:20:19, skipping insertion in model container [2019-05-23 11:20:19,076 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:20:19" (3/3) ... [2019-05-23 11:20:19,078 INFO L146 ILogger]: Analyzing ICFG standard_two_index_05_true-unreach-call.i [2019-05-23 11:20:19,088 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:20:19,096 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:20:19,112 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:20:19,143 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:20:19,144 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:20:19,144 INFO L146 ILogger]: Hoare is true [2019-05-23 11:20:19,144 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:20:19,144 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:20:19,145 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:20:19,145 INFO L146 ILogger]: Difference is false [2019-05-23 11:20:19,145 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:20:19,145 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:20:19,160 INFO L146 ILogger]: Start isEmpty. Operand 43 states. [2019-05-23 11:20:19,167 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 22 [2019-05-23 11:20:19,167 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:19,168 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:19,170 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:19,175 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:19,175 INFO L146 ILogger]: Analyzing trace with hash -1541380129, now seen corresponding path program 1 times [2019-05-23 11:20:19,176 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:19,177 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:19,218 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:19,218 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:19,218 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:19,252 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:19,290 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:19,293 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:20:19,293 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:20:19,297 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:20:19,307 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:20:19,308 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:20:19,310 INFO L146 ILogger]: Start difference. First operand 43 states. Second operand 2 states. [2019-05-23 11:20:19,329 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:19,330 INFO L146 ILogger]: Finished difference Result 73 states and 83 transitions. [2019-05-23 11:20:19,330 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:20:19,331 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 21 [2019-05-23 11:20:19,332 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:19,341 INFO L146 ILogger]: With dead ends: 73 [2019-05-23 11:20:19,341 INFO L146 ILogger]: Without dead ends: 35 [2019-05-23 11:20:19,345 INFO L146 ILogger]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:20:19,363 INFO L146 ILogger]: Start minimizeSevpa. Operand 35 states. [2019-05-23 11:20:19,379 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-05-23 11:20:19,381 INFO L146 ILogger]: Start removeUnreachable. Operand 35 states. [2019-05-23 11:20:19,382 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2019-05-23 11:20:19,384 INFO L146 ILogger]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 21 [2019-05-23 11:20:19,385 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:19,385 INFO L146 ILogger]: Abstraction has 35 states and 37 transitions. [2019-05-23 11:20:19,385 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:20:19,386 INFO L146 ILogger]: Start isEmpty. Operand 35 states and 37 transitions. [2019-05-23 11:20:19,386 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 22 [2019-05-23 11:20:19,387 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:19,387 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:19,387 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:19,388 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:19,388 INFO L146 ILogger]: Analyzing trace with hash 805843927, now seen corresponding path program 1 times [2019-05-23 11:20:19,388 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:19,388 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:19,389 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:19,390 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:19,390 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:19,404 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:19,488 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:19,488 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:20:19,488 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:20:19,490 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:20:19,492 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:20:19,492 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:20:19,493 INFO L146 ILogger]: Start difference. First operand 35 states and 37 transitions. Second operand 3 states. [2019-05-23 11:20:19,717 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:19,717 INFO L146 ILogger]: Finished difference Result 62 states and 66 transitions. [2019-05-23 11:20:19,717 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:20:19,717 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 21 [2019-05-23 11:20:19,718 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:19,718 INFO L146 ILogger]: With dead ends: 62 [2019-05-23 11:20:19,719 INFO L146 ILogger]: Without dead ends: 40 [2019-05-23 11:20:19,720 INFO L146 ILogger]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:20:19,720 INFO L146 ILogger]: Start minimizeSevpa. Operand 40 states. [2019-05-23 11:20:19,725 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 40 to 36. [2019-05-23 11:20:19,725 INFO L146 ILogger]: Start removeUnreachable. Operand 36 states. [2019-05-23 11:20:19,726 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2019-05-23 11:20:19,726 INFO L146 ILogger]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 21 [2019-05-23 11:20:19,726 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:19,727 INFO L146 ILogger]: Abstraction has 36 states and 38 transitions. [2019-05-23 11:20:19,727 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:20:19,727 INFO L146 ILogger]: Start isEmpty. Operand 36 states and 38 transitions. [2019-05-23 11:20:19,728 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 27 [2019-05-23 11:20:19,728 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:19,728 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:19,729 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:19,729 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:19,729 INFO L146 ILogger]: Analyzing trace with hash 1928914446, now seen corresponding path program 1 times [2019-05-23 11:20:19,729 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:19,729 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:19,731 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:19,731 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:19,731 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:19,748 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:19,813 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:20:19,813 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:20:19,813 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:20:19,814 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:20:19,814 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:20:19,814 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:20:19,815 INFO L146 ILogger]: Start difference. First operand 36 states and 38 transitions. Second operand 3 states. [2019-05-23 11:20:19,949 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:19,949 INFO L146 ILogger]: Finished difference Result 68 states and 71 transitions. [2019-05-23 11:20:19,949 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:20:19,950 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 26 [2019-05-23 11:20:19,950 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:19,951 INFO L146 ILogger]: With dead ends: 68 [2019-05-23 11:20:19,951 INFO L146 ILogger]: Without dead ends: 53 [2019-05-23 11:20:19,952 INFO L146 ILogger]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:20:19,952 INFO L146 ILogger]: Start minimizeSevpa. Operand 53 states. [2019-05-23 11:20:19,957 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 53 to 37. [2019-05-23 11:20:19,957 INFO L146 ILogger]: Start removeUnreachable. Operand 37 states. [2019-05-23 11:20:19,958 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2019-05-23 11:20:19,958 INFO L146 ILogger]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 26 [2019-05-23 11:20:19,959 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:19,959 INFO L146 ILogger]: Abstraction has 37 states and 39 transitions. [2019-05-23 11:20:19,959 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:20:19,959 INFO L146 ILogger]: Start isEmpty. Operand 37 states and 39 transitions. [2019-05-23 11:20:19,960 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 33 [2019-05-23 11:20:19,960 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:19,961 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:19,961 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:19,961 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:19,962 INFO L146 ILogger]: Analyzing trace with hash 876855147, now seen corresponding path program 1 times [2019-05-23 11:20:19,962 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:19,962 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:19,963 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:19,963 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:19,964 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:19,987 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:20,132 INFO L146 ILogger]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:20:20,132 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:20,132 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:20,146 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:20,182 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:20,184 INFO L146 ILogger]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:20:20,191 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:20,234 INFO L146 ILogger]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:20:20,256 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:20,256 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-05-23 11:20:20,257 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:20:20,258 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:20:20,259 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:20:20,259 INFO L146 ILogger]: Start difference. First operand 37 states and 39 transitions. Second operand 5 states. [2019-05-23 11:20:20,359 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:20,360 INFO L146 ILogger]: Finished difference Result 85 states and 89 transitions. [2019-05-23 11:20:20,360 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:20:20,360 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 32 [2019-05-23 11:20:20,361 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:20,361 INFO L146 ILogger]: With dead ends: 85 [2019-05-23 11:20:20,361 INFO L146 ILogger]: Without dead ends: 62 [2019-05-23 11:20:20,362 INFO L146 ILogger]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:20:20,362 INFO L146 ILogger]: Start minimizeSevpa. Operand 62 states. [2019-05-23 11:20:20,367 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 62 to 42. [2019-05-23 11:20:20,367 INFO L146 ILogger]: Start removeUnreachable. Operand 42 states. [2019-05-23 11:20:20,368 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2019-05-23 11:20:20,368 INFO L146 ILogger]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 32 [2019-05-23 11:20:20,368 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:20,368 INFO L146 ILogger]: Abstraction has 42 states and 44 transitions. [2019-05-23 11:20:20,369 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:20:20,369 INFO L146 ILogger]: Start isEmpty. Operand 42 states and 44 transitions. [2019-05-23 11:20:20,370 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 38 [2019-05-23 11:20:20,370 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:20,370 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:20,370 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:20,370 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:20,371 INFO L146 ILogger]: Analyzing trace with hash -411413292, now seen corresponding path program 2 times [2019-05-23 11:20:20,371 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:20,371 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:20,372 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:20,372 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:20,372 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:20,396 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:20,640 INFO L146 ILogger]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:20:20,640 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:20,641 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:20,659 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:20,719 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:20,720 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:20,721 INFO L146 ILogger]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:20:20,723 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:20,793 INFO L146 ILogger]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:20:20,817 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:20,817 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-05-23 11:20:20,818 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:20:20,818 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:20:20,818 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:20:20,819 INFO L146 ILogger]: Start difference. First operand 42 states and 44 transitions. Second operand 6 states. [2019-05-23 11:20:21,089 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:21,090 INFO L146 ILogger]: Finished difference Result 90 states and 94 transitions. [2019-05-23 11:20:21,094 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:20:21,094 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 37 [2019-05-23 11:20:21,094 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:21,095 INFO L146 ILogger]: With dead ends: 90 [2019-05-23 11:20:21,095 INFO L146 ILogger]: Without dead ends: 67 [2019-05-23 11:20:21,096 INFO L146 ILogger]: 0 DeclaredPredicates, 41 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:20:21,097 INFO L146 ILogger]: Start minimizeSevpa. Operand 67 states. [2019-05-23 11:20:21,101 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 67 to 47. [2019-05-23 11:20:21,101 INFO L146 ILogger]: Start removeUnreachable. Operand 47 states. [2019-05-23 11:20:21,102 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2019-05-23 11:20:21,103 INFO L146 ILogger]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 37 [2019-05-23 11:20:21,103 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:21,103 INFO L146 ILogger]: Abstraction has 47 states and 49 transitions. [2019-05-23 11:20:21,103 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:20:21,103 INFO L146 ILogger]: Start isEmpty. Operand 47 states and 49 transitions. [2019-05-23 11:20:21,104 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 43 [2019-05-23 11:20:21,104 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:21,104 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:21,105 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:21,105 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:21,105 INFO L146 ILogger]: Analyzing trace with hash -1153058549, now seen corresponding path program 3 times [2019-05-23 11:20:21,105 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:21,106 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:21,107 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:21,107 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:21,107 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:21,123 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:21,244 INFO L146 ILogger]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:20:21,244 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:21,244 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:21,264 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:21,284 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:20:21,285 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:21,286 INFO L146 ILogger]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:20:21,289 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:21,316 INFO L146 ILogger]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-05-23 11:20:21,344 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:21,344 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 7 [2019-05-23 11:20:21,345 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:20:21,345 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:20:21,346 INFO L146 ILogger]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:20:21,346 INFO L146 ILogger]: Start difference. First operand 47 states and 49 transitions. Second operand 7 states. [2019-05-23 11:20:21,626 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:21,627 INFO L146 ILogger]: Finished difference Result 119 states and 125 transitions. [2019-05-23 11:20:21,627 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:20:21,627 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 42 [2019-05-23 11:20:21,628 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:21,628 INFO L146 ILogger]: With dead ends: 119 [2019-05-23 11:20:21,628 INFO L146 ILogger]: Without dead ends: 96 [2019-05-23 11:20:21,629 INFO L146 ILogger]: 0 DeclaredPredicates, 47 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:20:21,630 INFO L146 ILogger]: Start minimizeSevpa. Operand 96 states. [2019-05-23 11:20:21,643 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 96 to 63. [2019-05-23 11:20:21,643 INFO L146 ILogger]: Start removeUnreachable. Operand 63 states. [2019-05-23 11:20:21,644 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2019-05-23 11:20:21,644 INFO L146 ILogger]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 42 [2019-05-23 11:20:21,649 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:21,649 INFO L146 ILogger]: Abstraction has 63 states and 65 transitions. [2019-05-23 11:20:21,649 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:20:21,649 INFO L146 ILogger]: Start isEmpty. Operand 63 states and 65 transitions. [2019-05-23 11:20:21,650 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 59 [2019-05-23 11:20:21,650 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:21,651 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:21,651 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:21,651 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:21,652 INFO L146 ILogger]: Analyzing trace with hash 1070488136, now seen corresponding path program 4 times [2019-05-23 11:20:21,655 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:21,655 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:21,656 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:21,656 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:21,656 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:21,702 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:21,862 INFO L146 ILogger]: Checked inductivity of 63 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-05-23 11:20:21,862 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:21,862 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:21,874 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:20:21,903 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:20:21,903 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:21,904 INFO L146 ILogger]: Trace formula consists of 103 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:20:21,908 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:21,931 INFO L146 ILogger]: Checked inductivity of 63 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-05-23 11:20:21,950 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:21,951 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2019-05-23 11:20:21,951 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:20:21,951 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:20:21,952 INFO L146 ILogger]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:20:21,952 INFO L146 ILogger]: Start difference. First operand 63 states and 65 transitions. Second operand 9 states. [2019-05-23 11:20:22,103 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:22,104 INFO L146 ILogger]: Finished difference Result 113 states and 117 transitions. [2019-05-23 11:20:22,104 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:20:22,104 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 58 [2019-05-23 11:20:22,105 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:22,106 INFO L146 ILogger]: With dead ends: 113 [2019-05-23 11:20:22,106 INFO L146 ILogger]: Without dead ends: 84 [2019-05-23 11:20:22,107 INFO L146 ILogger]: 0 DeclaredPredicates, 65 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:20:22,107 INFO L146 ILogger]: Start minimizeSevpa. Operand 84 states. [2019-05-23 11:20:22,113 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 84 to 68. [2019-05-23 11:20:22,113 INFO L146 ILogger]: Start removeUnreachable. Operand 68 states. [2019-05-23 11:20:22,115 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2019-05-23 11:20:22,116 INFO L146 ILogger]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 58 [2019-05-23 11:20:22,116 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:22,116 INFO L146 ILogger]: Abstraction has 68 states and 70 transitions. [2019-05-23 11:20:22,116 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:20:22,116 INFO L146 ILogger]: Start isEmpty. Operand 68 states and 70 transitions. [2019-05-23 11:20:22,117 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 64 [2019-05-23 11:20:22,117 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:22,118 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:22,118 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:22,118 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:22,118 INFO L146 ILogger]: Analyzing trace with hash 1820626545, now seen corresponding path program 5 times [2019-05-23 11:20:22,118 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:22,118 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:22,119 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:22,119 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:22,119 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:22,137 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:22,310 INFO L146 ILogger]: Checked inductivity of 89 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-05-23 11:20:22,310 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:22,310 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:22,320 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:20:22,402 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-05-23 11:20:22,402 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:22,403 INFO L146 ILogger]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:20:22,405 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:22,459 INFO L146 ILogger]: Checked inductivity of 89 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:20:22,478 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:22,478 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 10 [2019-05-23 11:20:22,479 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:20:22,479 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:20:22,479 INFO L146 ILogger]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:20:22,479 INFO L146 ILogger]: Start difference. First operand 68 states and 70 transitions. Second operand 10 states. [2019-05-23 11:20:22,902 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:22,902 INFO L146 ILogger]: Finished difference Result 159 states and 165 transitions. [2019-05-23 11:20:22,903 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-05-23 11:20:22,903 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 63 [2019-05-23 11:20:22,903 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:22,904 INFO L146 ILogger]: With dead ends: 159 [2019-05-23 11:20:22,904 INFO L146 ILogger]: Without dead ends: 130 [2019-05-23 11:20:22,905 INFO L146 ILogger]: 0 DeclaredPredicates, 71 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:20:22,905 INFO L146 ILogger]: Start minimizeSevpa. Operand 130 states. [2019-05-23 11:20:22,910 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 130 to 84. [2019-05-23 11:20:22,911 INFO L146 ILogger]: Start removeUnreachable. Operand 84 states. [2019-05-23 11:20:22,912 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 84 states to 84 states and 86 transitions. [2019-05-23 11:20:22,912 INFO L146 ILogger]: Start accepts. Automaton has 84 states and 86 transitions. Word has length 63 [2019-05-23 11:20:22,912 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:22,912 INFO L146 ILogger]: Abstraction has 84 states and 86 transitions. [2019-05-23 11:20:22,912 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:20:22,913 INFO L146 ILogger]: Start isEmpty. Operand 84 states and 86 transitions. [2019-05-23 11:20:22,914 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 80 [2019-05-23 11:20:22,914 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:22,914 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:22,915 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:22,915 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:22,915 INFO L146 ILogger]: Analyzing trace with hash -921576466, now seen corresponding path program 6 times [2019-05-23 11:20:22,915 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:22,915 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:22,916 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:22,916 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:22,917 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:22,943 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:23,551 INFO L146 ILogger]: Checked inductivity of 169 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-05-23 11:20:23,551 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:23,551 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:23,566 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:20:23,634 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-05-23 11:20:23,634 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:23,635 INFO L146 ILogger]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:20:23,638 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:23,693 INFO L146 ILogger]: Checked inductivity of 169 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2019-05-23 11:20:23,712 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:23,712 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6] total 13 [2019-05-23 11:20:23,713 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:20:23,713 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:20:23,713 INFO L146 ILogger]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:20:23,713 INFO L146 ILogger]: Start difference. First operand 84 states and 86 transitions. Second operand 13 states. [2019-05-23 11:20:23,892 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:23,892 INFO L146 ILogger]: Finished difference Result 199 states and 206 transitions. [2019-05-23 11:20:23,892 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:20:23,893 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 79 [2019-05-23 11:20:23,893 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:23,894 INFO L146 ILogger]: With dead ends: 199 [2019-05-23 11:20:23,894 INFO L146 ILogger]: Without dead ends: 164 [2019-05-23 11:20:23,896 INFO L146 ILogger]: 0 DeclaredPredicates, 89 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:20:23,896 INFO L146 ILogger]: Start minimizeSevpa. Operand 164 states. [2019-05-23 11:20:23,903 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 164 to 105. [2019-05-23 11:20:23,903 INFO L146 ILogger]: Start removeUnreachable. Operand 105 states. [2019-05-23 11:20:23,904 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 105 states to 105 states and 107 transitions. [2019-05-23 11:20:23,904 INFO L146 ILogger]: Start accepts. Automaton has 105 states and 107 transitions. Word has length 79 [2019-05-23 11:20:23,905 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:23,905 INFO L146 ILogger]: Abstraction has 105 states and 107 transitions. [2019-05-23 11:20:23,905 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:20:23,905 INFO L146 ILogger]: Start isEmpty. Operand 105 states and 107 transitions. [2019-05-23 11:20:23,907 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 101 [2019-05-23 11:20:23,907 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:23,907 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:23,907 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:23,908 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:23,908 INFO L146 ILogger]: Analyzing trace with hash -1433339614, now seen corresponding path program 7 times [2019-05-23 11:20:23,908 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:23,908 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:23,909 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:23,909 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:23,909 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:23,930 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:24,103 INFO L146 ILogger]: Checked inductivity of 326 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-05-23 11:20:24,103 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:24,103 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:24,116 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:24,140 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:24,141 INFO L146 ILogger]: Trace formula consists of 163 conjuncts, 13 conjunts are in the unsatisfiable core [2019-05-23 11:20:24,144 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:24,175 INFO L146 ILogger]: Checked inductivity of 326 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-05-23 11:20:24,197 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:24,197 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2019-05-23 11:20:24,198 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:20:24,198 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:20:24,198 INFO L146 ILogger]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:20:24,199 INFO L146 ILogger]: Start difference. First operand 105 states and 107 transitions. Second operand 15 states. [2019-05-23 11:20:24,554 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:24,555 INFO L146 ILogger]: Finished difference Result 193 states and 197 transitions. [2019-05-23 11:20:24,555 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-05-23 11:20:24,555 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 100 [2019-05-23 11:20:24,556 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:24,557 INFO L146 ILogger]: With dead ends: 193 [2019-05-23 11:20:24,558 INFO L146 ILogger]: Without dead ends: 152 [2019-05-23 11:20:24,559 INFO L146 ILogger]: 0 DeclaredPredicates, 113 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:20:24,559 INFO L146 ILogger]: Start minimizeSevpa. Operand 152 states. [2019-05-23 11:20:24,564 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 152 to 110. [2019-05-23 11:20:24,565 INFO L146 ILogger]: Start removeUnreachable. Operand 110 states. [2019-05-23 11:20:24,565 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 110 states to 110 states and 112 transitions. [2019-05-23 11:20:24,566 INFO L146 ILogger]: Start accepts. Automaton has 110 states and 112 transitions. Word has length 100 [2019-05-23 11:20:24,566 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:24,566 INFO L146 ILogger]: Abstraction has 110 states and 112 transitions. [2019-05-23 11:20:24,566 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:20:24,566 INFO L146 ILogger]: Start isEmpty. Operand 110 states and 112 transitions. [2019-05-23 11:20:24,568 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 106 [2019-05-23 11:20:24,568 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:24,568 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:24,568 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:24,569 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:24,569 INFO L146 ILogger]: Analyzing trace with hash -1782519285, now seen corresponding path program 8 times [2019-05-23 11:20:24,569 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:24,569 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:24,570 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:24,570 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:24,570 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:24,591 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:24,918 INFO L146 ILogger]: Checked inductivity of 382 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-05-23 11:20:24,918 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:24,918 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:24,927 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:24,956 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:24,956 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:24,957 INFO L146 ILogger]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:20:24,960 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:25,000 INFO L146 ILogger]: Checked inductivity of 382 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-05-23 11:20:25,018 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:25,018 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2019-05-23 11:20:25,020 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:20:25,020 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:20:25,021 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:20:25,021 INFO L146 ILogger]: Start difference. First operand 110 states and 112 transitions. Second operand 16 states. [2019-05-23 11:20:25,197 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:25,198 INFO L146 ILogger]: Finished difference Result 198 states and 202 transitions. [2019-05-23 11:20:25,198 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-05-23 11:20:25,198 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 105 [2019-05-23 11:20:25,199 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:25,200 INFO L146 ILogger]: With dead ends: 198 [2019-05-23 11:20:25,200 INFO L146 ILogger]: Without dead ends: 157 [2019-05-23 11:20:25,202 INFO L146 ILogger]: 0 DeclaredPredicates, 119 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:20:25,202 INFO L146 ILogger]: Start minimizeSevpa. Operand 157 states. [2019-05-23 11:20:25,207 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 157 to 115. [2019-05-23 11:20:25,207 INFO L146 ILogger]: Start removeUnreachable. Operand 115 states. [2019-05-23 11:20:25,207 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 115 states to 115 states and 117 transitions. [2019-05-23 11:20:25,208 INFO L146 ILogger]: Start accepts. Automaton has 115 states and 117 transitions. Word has length 105 [2019-05-23 11:20:25,208 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:25,208 INFO L146 ILogger]: Abstraction has 115 states and 117 transitions. [2019-05-23 11:20:25,208 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:20:25,208 INFO L146 ILogger]: Start isEmpty. Operand 115 states and 117 transitions. [2019-05-23 11:20:25,210 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 111 [2019-05-23 11:20:25,210 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:25,210 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:25,211 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:25,211 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:25,211 INFO L146 ILogger]: Analyzing trace with hash 1755325122, now seen corresponding path program 9 times [2019-05-23 11:20:25,211 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:25,211 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:25,212 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:25,212 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:25,212 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:25,230 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:25,521 INFO L146 ILogger]: Checked inductivity of 443 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-05-23 11:20:25,521 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:25,521 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:25,532 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:25,594 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-05-23 11:20:25,594 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:25,595 INFO L146 ILogger]: Trace formula consists of 114 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:20:25,597 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:25,714 INFO L146 ILogger]: Checked inductivity of 443 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2019-05-23 11:20:25,733 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:25,733 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 7] total 18 [2019-05-23 11:20:25,734 INFO L146 ILogger]: Interpolant automaton has 18 states [2019-05-23 11:20:25,734 INFO L146 ILogger]: Constructing interpolant automaton starting with 18 interpolants. [2019-05-23 11:20:25,734 INFO L146 ILogger]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-05-23 11:20:25,734 INFO L146 ILogger]: Start difference. First operand 115 states and 117 transitions. Second operand 18 states. [2019-05-23 11:20:25,961 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:25,962 INFO L146 ILogger]: Finished difference Result 249 states and 256 transitions. [2019-05-23 11:20:25,962 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:20:25,962 INFO L146 ILogger]: Start accepts. Automaton has 18 states. Word has length 110 [2019-05-23 11:20:25,963 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:25,964 INFO L146 ILogger]: With dead ends: 249 [2019-05-23 11:20:25,965 INFO L146 ILogger]: Without dead ends: 208 [2019-05-23 11:20:25,966 INFO L146 ILogger]: 0 DeclaredPredicates, 125 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-05-23 11:20:25,966 INFO L146 ILogger]: Start minimizeSevpa. Operand 208 states. [2019-05-23 11:20:25,973 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 208 to 136. [2019-05-23 11:20:25,974 INFO L146 ILogger]: Start removeUnreachable. Operand 136 states. [2019-05-23 11:20:25,974 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 136 states to 136 states and 138 transitions. [2019-05-23 11:20:25,975 INFO L146 ILogger]: Start accepts. Automaton has 136 states and 138 transitions. Word has length 110 [2019-05-23 11:20:25,975 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:25,975 INFO L146 ILogger]: Abstraction has 136 states and 138 transitions. [2019-05-23 11:20:25,975 INFO L146 ILogger]: Interpolant automaton has 18 states. [2019-05-23 11:20:25,975 INFO L146 ILogger]: Start isEmpty. Operand 136 states and 138 transitions. [2019-05-23 11:20:25,977 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 132 [2019-05-23 11:20:25,978 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:25,978 INFO L146 ILogger]: trace histogram [16, 16, 16, 16, 16, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:25,978 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:25,978 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:25,979 INFO L146 ILogger]: Analyzing trace with hash 2342504, now seen corresponding path program 10 times [2019-05-23 11:20:25,980 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:25,980 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:25,981 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:25,981 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:25,981 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:26,000 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:26,690 INFO L146 ILogger]: Checked inductivity of 681 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-05-23 11:20:26,691 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:26,691 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:26,701 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:20:26,886 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:20:26,886 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:26,889 INFO L146 ILogger]: Trace formula consists of 207 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:20:26,891 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:26,928 INFO L146 ILogger]: Checked inductivity of 681 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-05-23 11:20:26,947 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:26,947 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2019-05-23 11:20:26,948 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:20:26,948 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:20:26,948 INFO L146 ILogger]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:20:26,948 INFO L146 ILogger]: Start difference. First operand 136 states and 138 transitions. Second operand 20 states. [2019-05-23 11:20:27,212 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:27,213 INFO L146 ILogger]: Finished difference Result 243 states and 247 transitions. [2019-05-23 11:20:27,213 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-05-23 11:20:27,213 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 131 [2019-05-23 11:20:27,213 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:27,215 INFO L146 ILogger]: With dead ends: 243 [2019-05-23 11:20:27,215 INFO L146 ILogger]: Without dead ends: 196 [2019-05-23 11:20:27,216 INFO L146 ILogger]: 0 DeclaredPredicates, 149 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:20:27,217 INFO L146 ILogger]: Start minimizeSevpa. Operand 196 states. [2019-05-23 11:20:27,221 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 196 to 141. [2019-05-23 11:20:27,221 INFO L146 ILogger]: Start removeUnreachable. Operand 141 states. [2019-05-23 11:20:27,222 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 141 states to 141 states and 143 transitions. [2019-05-23 11:20:27,222 INFO L146 ILogger]: Start accepts. Automaton has 141 states and 143 transitions. Word has length 131 [2019-05-23 11:20:27,222 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:27,223 INFO L146 ILogger]: Abstraction has 141 states and 143 transitions. [2019-05-23 11:20:27,223 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:20:27,223 INFO L146 ILogger]: Start isEmpty. Operand 141 states and 143 transitions. [2019-05-23 11:20:27,224 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 137 [2019-05-23 11:20:27,225 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:27,225 INFO L146 ILogger]: trace histogram [17, 17, 17, 17, 17, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:27,225 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:27,225 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:27,226 INFO L146 ILogger]: Analyzing trace with hash -1629491105, now seen corresponding path program 11 times [2019-05-23 11:20:27,226 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:27,226 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:27,227 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:27,227 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:27,227 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:27,247 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:27,550 INFO L146 ILogger]: Checked inductivity of 762 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-05-23 11:20:27,551 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:27,551 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:27,560 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:20:28,277 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2019-05-23 11:20:28,277 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:28,279 INFO L146 ILogger]: Trace formula consists of 214 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:20:28,281 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:28,337 INFO L146 ILogger]: Checked inductivity of 762 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2019-05-23 11:20:28,358 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:28,358 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 8] total 22 [2019-05-23 11:20:28,359 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:20:28,359 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:20:28,359 INFO L146 ILogger]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:20:28,360 INFO L146 ILogger]: Start difference. First operand 141 states and 143 transitions. Second operand 22 states. [2019-05-23 11:20:28,579 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:28,579 INFO L146 ILogger]: Finished difference Result 294 states and 301 transitions. [2019-05-23 11:20:28,580 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-05-23 11:20:28,580 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 136 [2019-05-23 11:20:28,580 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:28,582 INFO L146 ILogger]: With dead ends: 294 [2019-05-23 11:20:28,582 INFO L146 ILogger]: Without dead ends: 247 [2019-05-23 11:20:28,583 INFO L146 ILogger]: 0 DeclaredPredicates, 155 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:20:28,583 INFO L146 ILogger]: Start minimizeSevpa. Operand 247 states. [2019-05-23 11:20:28,587 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 247 to 162. [2019-05-23 11:20:28,588 INFO L146 ILogger]: Start removeUnreachable. Operand 162 states. [2019-05-23 11:20:28,588 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 162 states to 162 states and 164 transitions. [2019-05-23 11:20:28,588 INFO L146 ILogger]: Start accepts. Automaton has 162 states and 164 transitions. Word has length 136 [2019-05-23 11:20:28,589 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:28,589 INFO L146 ILogger]: Abstraction has 162 states and 164 transitions. [2019-05-23 11:20:28,589 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:20:28,589 INFO L146 ILogger]: Start isEmpty. Operand 162 states and 164 transitions. [2019-05-23 11:20:28,590 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 158 [2019-05-23 11:20:28,590 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:28,590 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:28,591 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:28,591 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:28,591 INFO L146 ILogger]: Analyzing trace with hash 1669900549, now seen corresponding path program 12 times [2019-05-23 11:20:28,591 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:28,591 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:28,592 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:28,592 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:28,592 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:28,610 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:28,974 INFO L146 ILogger]: Checked inductivity of 1066 backedges. 0 proven. 970 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:20:28,975 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:28,975 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:28,984 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:20:29,542 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-05-23 11:20:29,542 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:29,545 INFO L146 ILogger]: Trace formula consists of 188 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:20:29,547 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:29,698 INFO L146 ILogger]: Checked inductivity of 1066 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2019-05-23 11:20:29,717 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:29,717 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 9] total 26 [2019-05-23 11:20:29,718 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:20:29,718 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:20:29,719 INFO L146 ILogger]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:20:29,719 INFO L146 ILogger]: Start difference. First operand 162 states and 164 transitions. Second operand 26 states. [2019-05-23 11:20:30,087 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:30,087 INFO L146 ILogger]: Finished difference Result 339 states and 347 transitions. [2019-05-23 11:20:30,088 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-05-23 11:20:30,088 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 157 [2019-05-23 11:20:30,088 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:30,090 INFO L146 ILogger]: With dead ends: 339 [2019-05-23 11:20:30,090 INFO L146 ILogger]: Without dead ends: 286 [2019-05-23 11:20:30,090 INFO L146 ILogger]: 0 DeclaredPredicates, 179 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:20:30,091 INFO L146 ILogger]: Start minimizeSevpa. Operand 286 states. [2019-05-23 11:20:30,095 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 286 to 188. [2019-05-23 11:20:30,095 INFO L146 ILogger]: Start removeUnreachable. Operand 188 states. [2019-05-23 11:20:30,096 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 188 states to 188 states and 190 transitions. [2019-05-23 11:20:30,096 INFO L146 ILogger]: Start accepts. Automaton has 188 states and 190 transitions. Word has length 157 [2019-05-23 11:20:30,096 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:30,096 INFO L146 ILogger]: Abstraction has 188 states and 190 transitions. [2019-05-23 11:20:30,097 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:20:30,097 INFO L146 ILogger]: Start isEmpty. Operand 188 states and 190 transitions. [2019-05-23 11:20:30,097 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 184 [2019-05-23 11:20:30,098 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:30,098 INFO L146 ILogger]: trace histogram [24, 24, 24, 24, 24, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:30,098 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:30,098 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:30,098 INFO L146 ILogger]: Analyzing trace with hash 1010956770, now seen corresponding path program 13 times [2019-05-23 11:20:30,099 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:30,099 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:30,099 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:30,100 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:30,100 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:30,118 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:30,653 INFO L146 ILogger]: Checked inductivity of 1537 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-05-23 11:20:30,653 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:30,654 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:30,661 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:30,709 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:30,710 INFO L146 ILogger]: Trace formula consists of 281 conjuncts, 26 conjunts are in the unsatisfiable core [2019-05-23 11:20:30,713 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:30,804 INFO L146 ILogger]: Checked inductivity of 1537 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-05-23 11:20:30,833 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:30,833 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2019-05-23 11:20:30,834 INFO L146 ILogger]: Interpolant automaton has 28 states [2019-05-23 11:20:30,834 INFO L146 ILogger]: Constructing interpolant automaton starting with 28 interpolants. [2019-05-23 11:20:30,835 INFO L146 ILogger]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:20:30,836 INFO L146 ILogger]: Start difference. First operand 188 states and 190 transitions. Second operand 28 states. [2019-05-23 11:20:31,438 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:31,439 INFO L146 ILogger]: Finished difference Result 320 states and 324 transitions. [2019-05-23 11:20:31,439 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:20:31,439 INFO L146 ILogger]: Start accepts. Automaton has 28 states. Word has length 183 [2019-05-23 11:20:31,439 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:31,440 INFO L146 ILogger]: With dead ends: 320 [2019-05-23 11:20:31,441 INFO L146 ILogger]: Without dead ends: 261 [2019-05-23 11:20:31,441 INFO L146 ILogger]: 0 DeclaredPredicates, 209 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:20:31,442 INFO L146 ILogger]: Start minimizeSevpa. Operand 261 states. [2019-05-23 11:20:31,446 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 261 to 193. [2019-05-23 11:20:31,446 INFO L146 ILogger]: Start removeUnreachable. Operand 193 states. [2019-05-23 11:20:31,447 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 193 states to 193 states and 195 transitions. [2019-05-23 11:20:31,447 INFO L146 ILogger]: Start accepts. Automaton has 193 states and 195 transitions. Word has length 183 [2019-05-23 11:20:31,447 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:31,447 INFO L146 ILogger]: Abstraction has 193 states and 195 transitions. [2019-05-23 11:20:31,448 INFO L146 ILogger]: Interpolant automaton has 28 states. [2019-05-23 11:20:31,448 INFO L146 ILogger]: Start isEmpty. Operand 193 states and 195 transitions. [2019-05-23 11:20:31,449 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 189 [2019-05-23 11:20:31,449 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:31,449 INFO L146 ILogger]: trace histogram [25, 25, 25, 25, 25, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:31,449 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:31,449 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:31,450 INFO L146 ILogger]: Analyzing trace with hash -1265045927, now seen corresponding path program 14 times [2019-05-23 11:20:31,450 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:31,450 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:31,451 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:31,451 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:31,451 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:31,469 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:31,962 INFO L146 ILogger]: Checked inductivity of 1658 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-05-23 11:20:31,963 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:31,963 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:31,971 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:32,021 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:32,021 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:32,022 INFO L146 ILogger]: Trace formula consists of 288 conjuncts, 27 conjunts are in the unsatisfiable core [2019-05-23 11:20:32,025 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:32,084 INFO L146 ILogger]: Checked inductivity of 1658 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-05-23 11:20:32,109 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:32,109 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2019-05-23 11:20:32,110 INFO L146 ILogger]: Interpolant automaton has 29 states [2019-05-23 11:20:32,110 INFO L146 ILogger]: Constructing interpolant automaton starting with 29 interpolants. [2019-05-23 11:20:32,110 INFO L146 ILogger]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:20:32,111 INFO L146 ILogger]: Start difference. First operand 193 states and 195 transitions. Second operand 29 states. [2019-05-23 11:20:32,525 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:32,525 INFO L146 ILogger]: Finished difference Result 325 states and 329 transitions. [2019-05-23 11:20:32,526 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-05-23 11:20:32,526 INFO L146 ILogger]: Start accepts. Automaton has 29 states. Word has length 188 [2019-05-23 11:20:32,526 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:32,528 INFO L146 ILogger]: With dead ends: 325 [2019-05-23 11:20:32,528 INFO L146 ILogger]: Without dead ends: 266 [2019-05-23 11:20:32,529 INFO L146 ILogger]: 0 DeclaredPredicates, 215 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:20:32,530 INFO L146 ILogger]: Start minimizeSevpa. Operand 266 states. [2019-05-23 11:20:32,534 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 266 to 198. [2019-05-23 11:20:32,534 INFO L146 ILogger]: Start removeUnreachable. Operand 198 states. [2019-05-23 11:20:32,535 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 198 states to 198 states and 200 transitions. [2019-05-23 11:20:32,535 INFO L146 ILogger]: Start accepts. Automaton has 198 states and 200 transitions. Word has length 188 [2019-05-23 11:20:32,535 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:32,535 INFO L146 ILogger]: Abstraction has 198 states and 200 transitions. [2019-05-23 11:20:32,535 INFO L146 ILogger]: Interpolant automaton has 29 states. [2019-05-23 11:20:32,535 INFO L146 ILogger]: Start isEmpty. Operand 198 states and 200 transitions. [2019-05-23 11:20:32,536 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 194 [2019-05-23 11:20:32,536 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:32,537 INFO L146 ILogger]: trace histogram [26, 26, 26, 26, 26, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:32,537 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:32,537 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:32,537 INFO L146 ILogger]: Analyzing trace with hash 730541122, now seen corresponding path program 15 times [2019-05-23 11:20:32,538 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:32,538 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:32,538 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:32,539 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:32,539 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:32,558 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:33,038 INFO L146 ILogger]: Checked inductivity of 1784 backedges. 0 proven. 1651 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-05-23 11:20:33,038 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:33,038 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:33,048 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:33,152 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2019-05-23 11:20:33,153 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:33,154 INFO L146 ILogger]: Trace formula consists of 162 conjuncts, 9 conjunts are in the unsatisfiable core [2019-05-23 11:20:33,156 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:33,260 INFO L146 ILogger]: Checked inductivity of 1784 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 1651 trivial. 0 not checked. [2019-05-23 11:20:33,279 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:33,280 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 10] total 31 [2019-05-23 11:20:33,280 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:20:33,281 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:20:33,281 INFO L146 ILogger]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:20:33,281 INFO L146 ILogger]: Start difference. First operand 198 states and 200 transitions. Second operand 31 states. [2019-05-23 11:20:34,168 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:34,169 INFO L146 ILogger]: Finished difference Result 389 states and 396 transitions. [2019-05-23 11:20:34,169 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:20:34,169 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 193 [2019-05-23 11:20:34,170 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:34,172 INFO L146 ILogger]: With dead ends: 389 [2019-05-23 11:20:34,172 INFO L146 ILogger]: Without dead ends: 330 [2019-05-23 11:20:34,173 INFO L146 ILogger]: 0 DeclaredPredicates, 221 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:20:34,174 INFO L146 ILogger]: Start minimizeSevpa. Operand 330 states. [2019-05-23 11:20:34,178 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 330 to 219. [2019-05-23 11:20:34,178 INFO L146 ILogger]: Start removeUnreachable. Operand 219 states. [2019-05-23 11:20:34,179 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 219 states to 219 states and 221 transitions. [2019-05-23 11:20:34,179 INFO L146 ILogger]: Start accepts. Automaton has 219 states and 221 transitions. Word has length 193 [2019-05-23 11:20:34,179 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:34,179 INFO L146 ILogger]: Abstraction has 219 states and 221 transitions. [2019-05-23 11:20:34,179 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:20:34,180 INFO L146 ILogger]: Start isEmpty. Operand 219 states and 221 transitions. [2019-05-23 11:20:34,180 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 215 [2019-05-23 11:20:34,181 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:34,181 INFO L146 ILogger]: trace histogram [29, 29, 29, 29, 29, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:34,181 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:34,181 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:34,181 INFO L146 ILogger]: Analyzing trace with hash 371375798, now seen corresponding path program 16 times [2019-05-23 11:20:34,182 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:34,182 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:34,182 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:34,183 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:34,183 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:34,204 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:36,109 INFO L146 ILogger]: Checked inductivity of 2235 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-05-23 11:20:36,109 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:36,109 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:36,118 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:20:39,764 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:20:39,765 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:39,769 INFO L146 ILogger]: Trace formula consists of 325 conjuncts, 31 conjunts are in the unsatisfiable core [2019-05-23 11:20:39,772 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:39,863 INFO L146 ILogger]: Checked inductivity of 2235 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-05-23 11:20:39,893 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:39,893 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2019-05-23 11:20:39,894 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:20:39,894 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:20:39,895 INFO L146 ILogger]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:20:39,896 INFO L146 ILogger]: Start difference. First operand 219 states and 221 transitions. Second operand 33 states. [2019-05-23 11:20:40,246 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:40,246 INFO L146 ILogger]: Finished difference Result 370 states and 374 transitions. [2019-05-23 11:20:40,247 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-05-23 11:20:40,247 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 214 [2019-05-23 11:20:40,247 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:40,249 INFO L146 ILogger]: With dead ends: 370 [2019-05-23 11:20:40,249 INFO L146 ILogger]: Without dead ends: 305 [2019-05-23 11:20:40,250 INFO L146 ILogger]: 0 DeclaredPredicates, 245 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:20:40,250 INFO L146 ILogger]: Start minimizeSevpa. Operand 305 states. [2019-05-23 11:20:40,254 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 305 to 224. [2019-05-23 11:20:40,254 INFO L146 ILogger]: Start removeUnreachable. Operand 224 states. [2019-05-23 11:20:40,255 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 224 states to 224 states and 226 transitions. [2019-05-23 11:20:40,255 INFO L146 ILogger]: Start accepts. Automaton has 224 states and 226 transitions. Word has length 214 [2019-05-23 11:20:40,255 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:40,255 INFO L146 ILogger]: Abstraction has 224 states and 226 transitions. [2019-05-23 11:20:40,256 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:20:40,256 INFO L146 ILogger]: Start isEmpty. Operand 224 states and 226 transitions. [2019-05-23 11:20:40,257 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 220 [2019-05-23 11:20:40,257 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:40,257 INFO L146 ILogger]: trace histogram [30, 30, 30, 30, 30, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:40,257 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:40,257 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:40,258 INFO L146 ILogger]: Analyzing trace with hash 1583020895, now seen corresponding path program 17 times [2019-05-23 11:20:40,258 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:40,258 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:40,259 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:40,259 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:40,259 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:40,284 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:41,580 INFO L146 ILogger]: Checked inductivity of 2381 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-05-23 11:20:41,581 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:41,581 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:41,607 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:21:02,582 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2019-05-23 11:21:02,582 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:02,593 INFO L146 ILogger]: Trace formula consists of 332 conjuncts, 32 conjunts are in the unsatisfiable core [2019-05-23 11:21:02,596 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:02,640 INFO L146 ILogger]: Checked inductivity of 2381 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-05-23 11:21:02,664 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:02,664 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2019-05-23 11:21:02,665 INFO L146 ILogger]: Interpolant automaton has 34 states [2019-05-23 11:21:02,665 INFO L146 ILogger]: Constructing interpolant automaton starting with 34 interpolants. [2019-05-23 11:21:02,666 INFO L146 ILogger]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2019-05-23 11:21:02,666 INFO L146 ILogger]: Start difference. First operand 224 states and 226 transitions. Second operand 34 states. [2019-05-23 11:21:03,015 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:03,015 INFO L146 ILogger]: Finished difference Result 375 states and 379 transitions. [2019-05-23 11:21:03,015 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-05-23 11:21:03,015 INFO L146 ILogger]: Start accepts. Automaton has 34 states. Word has length 219 [2019-05-23 11:21:03,016 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:03,017 INFO L146 ILogger]: With dead ends: 375 [2019-05-23 11:21:03,017 INFO L146 ILogger]: Without dead ends: 310 [2019-05-23 11:21:03,017 INFO L146 ILogger]: 0 DeclaredPredicates, 251 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2019-05-23 11:21:03,018 INFO L146 ILogger]: Start minimizeSevpa. Operand 310 states. [2019-05-23 11:21:03,022 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 310 to 229. [2019-05-23 11:21:03,022 INFO L146 ILogger]: Start removeUnreachable. Operand 229 states. [2019-05-23 11:21:03,023 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 229 states to 229 states and 231 transitions. [2019-05-23 11:21:03,023 INFO L146 ILogger]: Start accepts. Automaton has 229 states and 231 transitions. Word has length 219 [2019-05-23 11:21:03,023 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:03,023 INFO L146 ILogger]: Abstraction has 229 states and 231 transitions. [2019-05-23 11:21:03,024 INFO L146 ILogger]: Interpolant automaton has 34 states. [2019-05-23 11:21:03,024 INFO L146 ILogger]: Start isEmpty. Operand 229 states and 231 transitions. [2019-05-23 11:21:03,025 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 225 [2019-05-23 11:21:03,025 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:03,025 INFO L146 ILogger]: trace histogram [31, 31, 31, 31, 31, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:03,025 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:03,026 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:03,026 INFO L146 ILogger]: Analyzing trace with hash -62177194, now seen corresponding path program 18 times [2019-05-23 11:21:03,026 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:03,026 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:03,027 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:03,027 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:03,027 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:03,049 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:03,554 INFO L146 ILogger]: Checked inductivity of 2532 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-05-23 11:21:03,554 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:03,554 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:21:03,564 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:21:08,511 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2019-05-23 11:21:08,511 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:08,518 INFO L146 ILogger]: Trace formula consists of 234 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:21:08,520 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:08,633 INFO L146 ILogger]: Checked inductivity of 2532 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 2356 trivial. 0 not checked. [2019-05-23 11:21:08,654 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:08,655 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 11] total 36 [2019-05-23 11:21:08,655 INFO L146 ILogger]: Interpolant automaton has 36 states [2019-05-23 11:21:08,655 INFO L146 ILogger]: Constructing interpolant automaton starting with 36 interpolants. [2019-05-23 11:21:08,656 INFO L146 ILogger]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:21:08,656 INFO L146 ILogger]: Start difference. First operand 229 states and 231 transitions. Second operand 36 states. [2019-05-23 11:21:09,011 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:09,011 INFO L146 ILogger]: Finished difference Result 439 states and 446 transitions. [2019-05-23 11:21:09,011 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-05-23 11:21:09,011 INFO L146 ILogger]: Start accepts. Automaton has 36 states. Word has length 224 [2019-05-23 11:21:09,012 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:09,015 INFO L146 ILogger]: With dead ends: 439 [2019-05-23 11:21:09,015 INFO L146 ILogger]: Without dead ends: 374 [2019-05-23 11:21:09,016 INFO L146 ILogger]: 0 DeclaredPredicates, 257 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:21:09,016 INFO L146 ILogger]: Start minimizeSevpa. Operand 374 states. [2019-05-23 11:21:09,020 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 374 to 250. [2019-05-23 11:21:09,021 INFO L146 ILogger]: Start removeUnreachable. Operand 250 states. [2019-05-23 11:21:09,021 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 250 states to 250 states and 252 transitions. [2019-05-23 11:21:09,021 INFO L146 ILogger]: Start accepts. Automaton has 250 states and 252 transitions. Word has length 224 [2019-05-23 11:21:09,022 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:09,022 INFO L146 ILogger]: Abstraction has 250 states and 252 transitions. [2019-05-23 11:21:09,022 INFO L146 ILogger]: Interpolant automaton has 36 states. [2019-05-23 11:21:09,022 INFO L146 ILogger]: Start isEmpty. Operand 250 states and 252 transitions. [2019-05-23 11:21:09,023 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 246 [2019-05-23 11:21:09,023 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:09,024 INFO L146 ILogger]: trace histogram [34, 34, 34, 34, 34, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:09,024 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:09,024 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:09,024 INFO L146 ILogger]: Analyzing trace with hash 730190012, now seen corresponding path program 19 times [2019-05-23 11:21:09,024 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:09,024 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:09,025 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:09,025 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:09,025 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:09,048 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:09,634 INFO L146 ILogger]: Checked inductivity of 3064 backedges. 0 proven. 2839 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2019-05-23 11:21:09,635 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:09,635 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:21:09,644 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:09,699 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:09,700 INFO L146 ILogger]: Trace formula consists of 369 conjuncts, 36 conjunts are in the unsatisfiable core [2019-05-23 11:21:09,704 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:09,850 INFO L146 ILogger]: Checked inductivity of 3064 backedges. 0 proven. 2839 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2019-05-23 11:21:09,880 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:09,880 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2019-05-23 11:21:09,880 INFO L146 ILogger]: Interpolant automaton has 38 states [2019-05-23 11:21:09,881 INFO L146 ILogger]: Constructing interpolant automaton starting with 38 interpolants. [2019-05-23 11:21:09,882 INFO L146 ILogger]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2019-05-23 11:21:09,882 INFO L146 ILogger]: Start difference. First operand 250 states and 252 transitions. Second operand 38 states. [2019-05-23 11:21:11,016 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:11,016 INFO L146 ILogger]: Finished difference Result 420 states and 424 transitions. [2019-05-23 11:21:11,019 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-05-23 11:21:11,019 INFO L146 ILogger]: Start accepts. Automaton has 38 states. Word has length 245 [2019-05-23 11:21:11,019 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:11,021 INFO L146 ILogger]: With dead ends: 420 [2019-05-23 11:21:11,021 INFO L146 ILogger]: Without dead ends: 349 [2019-05-23 11:21:11,023 INFO L146 ILogger]: 0 DeclaredPredicates, 281 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2019-05-23 11:21:11,023 INFO L146 ILogger]: Start minimizeSevpa. Operand 349 states. [2019-05-23 11:21:11,028 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 349 to 255. [2019-05-23 11:21:11,028 INFO L146 ILogger]: Start removeUnreachable. Operand 255 states. [2019-05-23 11:21:11,028 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 255 states to 255 states and 257 transitions. [2019-05-23 11:21:11,029 INFO L146 ILogger]: Start accepts. Automaton has 255 states and 257 transitions. Word has length 245 [2019-05-23 11:21:11,029 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:11,029 INFO L146 ILogger]: Abstraction has 255 states and 257 transitions. [2019-05-23 11:21:11,029 INFO L146 ILogger]: Interpolant automaton has 38 states. [2019-05-23 11:21:11,029 INFO L146 ILogger]: Start isEmpty. Operand 255 states and 257 transitions. [2019-05-23 11:21:11,030 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 251 [2019-05-23 11:21:11,030 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:11,031 INFO L146 ILogger]: trace histogram [35, 35, 35, 35, 35, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:11,031 INFO L146 ILogger]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:11,031 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:11,031 INFO L146 ILogger]: Analyzing trace with hash 320880371, now seen corresponding path program 20 times [2019-05-23 11:21:11,031 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:11,032 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:11,032 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:11,032 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:11,033 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:11,056 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:12,119 INFO L146 ILogger]: Checked inductivity of 3235 backedges. 0 proven. 3010 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2019-05-23 11:21:12,120 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:12,120 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:21:12,135 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:21:12,191 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:21:12,191 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:12,193 INFO L146 ILogger]: Trace formula consists of 376 conjuncts, 37 conjunts are in the unsatisfiable core [2019-05-23 11:21:12,196 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:12,304 INFO L146 ILogger]: Checked inductivity of 3235 backedges. 0 proven. 3010 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2019-05-23 11:21:12,323 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:12,323 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2019-05-23 11:21:12,324 INFO L146 ILogger]: Interpolant automaton has 39 states [2019-05-23 11:21:12,324 INFO L146 ILogger]: Constructing interpolant automaton starting with 39 interpolants. [2019-05-23 11:21:12,325 INFO L146 ILogger]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2019-05-23 11:21:12,325 INFO L146 ILogger]: Start difference. First operand 255 states and 257 transitions. Second operand 39 states. [2019-05-23 11:21:12,753 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:12,753 INFO L146 ILogger]: Finished difference Result 425 states and 429 transitions. [2019-05-23 11:21:12,754 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-05-23 11:21:12,754 INFO L146 ILogger]: Start accepts. Automaton has 39 states. Word has length 250 [2019-05-23 11:21:12,755 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:12,757 INFO L146 ILogger]: With dead ends: 425 [2019-05-23 11:21:12,757 INFO L146 ILogger]: Without dead ends: 354 [2019-05-23 11:21:12,758 INFO L146 ILogger]: 0 DeclaredPredicates, 287 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2019-05-23 11:21:12,758 INFO L146 ILogger]: Start minimizeSevpa. Operand 354 states. [2019-05-23 11:21:12,763 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 354 to 260. [2019-05-23 11:21:12,763 INFO L146 ILogger]: Start removeUnreachable. Operand 260 states. [2019-05-23 11:21:12,764 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 260 states to 260 states and 262 transitions. [2019-05-23 11:21:12,764 INFO L146 ILogger]: Start accepts. Automaton has 260 states and 262 transitions. Word has length 250 [2019-05-23 11:21:12,764 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:12,765 INFO L146 ILogger]: Abstraction has 260 states and 262 transitions. [2019-05-23 11:21:12,765 INFO L146 ILogger]: Interpolant automaton has 39 states. [2019-05-23 11:21:12,765 INFO L146 ILogger]: Start isEmpty. Operand 260 states and 262 transitions. [2019-05-23 11:21:12,766 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 256 [2019-05-23 11:21:12,766 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:12,766 INFO L146 ILogger]: trace histogram [36, 36, 36, 36, 36, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:12,767 INFO L146 ILogger]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:12,767 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:12,767 INFO L146 ILogger]: Analyzing trace with hash -290120932, now seen corresponding path program 21 times [2019-05-23 11:21:12,767 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:12,767 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:12,768 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:12,768 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:12,768 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:12,796 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:15,162 INFO L146 ILogger]: Checked inductivity of 3411 backedges. 0 proven. 3186 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2019-05-23 11:21:15,163 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:15,163 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:21:15,171 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:21:15,419 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-05-23 11:21:15,419 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:15,421 INFO L146 ILogger]: Trace formula consists of 194 conjuncts, 11 conjunts are in the unsatisfiable core [2019-05-23 11:21:15,424 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:15,534 INFO L146 ILogger]: Checked inductivity of 3411 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 3186 trivial. 0 not checked. [2019-05-23 11:21:15,553 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:15,553 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 12] total 41 [2019-05-23 11:21:15,554 INFO L146 ILogger]: Interpolant automaton has 41 states [2019-05-23 11:21:15,554 INFO L146 ILogger]: Constructing interpolant automaton starting with 41 interpolants. [2019-05-23 11:21:15,555 INFO L146 ILogger]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:21:15,555 INFO L146 ILogger]: Start difference. First operand 260 states and 262 transitions. Second operand 41 states. [2019-05-23 11:21:15,924 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:15,925 INFO L146 ILogger]: Finished difference Result 489 states and 496 transitions. [2019-05-23 11:21:15,925 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2019-05-23 11:21:15,925 INFO L146 ILogger]: Start accepts. Automaton has 41 states. Word has length 255 [2019-05-23 11:21:15,926 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:15,928 INFO L146 ILogger]: With dead ends: 489 [2019-05-23 11:21:15,928 INFO L146 ILogger]: Without dead ends: 418 [2019-05-23 11:21:15,929 INFO L146 ILogger]: 0 DeclaredPredicates, 293 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:21:15,930 INFO L146 ILogger]: Start minimizeSevpa. Operand 418 states. [2019-05-23 11:21:15,935 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 418 to 281. [2019-05-23 11:21:15,935 INFO L146 ILogger]: Start removeUnreachable. Operand 281 states. [2019-05-23 11:21:15,935 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 281 states to 281 states and 283 transitions. [2019-05-23 11:21:15,936 INFO L146 ILogger]: Start accepts. Automaton has 281 states and 283 transitions. Word has length 255 [2019-05-23 11:21:15,936 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:15,936 INFO L146 ILogger]: Abstraction has 281 states and 283 transitions. [2019-05-23 11:21:15,936 INFO L146 ILogger]: Interpolant automaton has 41 states. [2019-05-23 11:21:15,936 INFO L146 ILogger]: Start isEmpty. Operand 281 states and 283 transitions. [2019-05-23 11:21:15,937 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 277 [2019-05-23 11:21:15,938 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:15,938 INFO L146 ILogger]: trace histogram [39, 39, 39, 39, 39, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:15,938 INFO L146 ILogger]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:15,938 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:15,939 INFO L146 ILogger]: Analyzing trace with hash -1046379568, now seen corresponding path program 22 times [2019-05-23 11:21:15,939 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:15,939 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:15,939 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:15,940 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:15,940 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:15,967 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:17,449 INFO L146 ILogger]: Checked inductivity of 4024 backedges. 0 proven. 3744 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2019-05-23 11:21:17,450 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:17,450 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:21:17,461 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:21:20,087 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:21:20,088 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:20,093 INFO L146 ILogger]: Trace formula consists of 413 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:21:20,095 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:20,279 INFO L146 ILogger]: Checked inductivity of 4024 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 3744 trivial. 0 not checked. [2019-05-23 11:21:20,300 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:20,301 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 13] total 45 [2019-05-23 11:21:20,301 INFO L146 ILogger]: Interpolant automaton has 45 states [2019-05-23 11:21:20,301 INFO L146 ILogger]: Constructing interpolant automaton starting with 45 interpolants. [2019-05-23 11:21:20,302 INFO L146 ILogger]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2019-05-23 11:21:20,302 INFO L146 ILogger]: Start difference. First operand 281 states and 283 transitions. Second operand 45 states. [2019-05-23 11:21:21,227 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:21,227 INFO L146 ILogger]: Finished difference Result 534 states and 542 transitions. [2019-05-23 11:21:21,227 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-05-23 11:21:21,228 INFO L146 ILogger]: Start accepts. Automaton has 45 states. Word has length 276 [2019-05-23 11:21:21,229 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:21,231 INFO L146 ILogger]: With dead ends: 534 [2019-05-23 11:21:21,231 INFO L146 ILogger]: Without dead ends: 457 [2019-05-23 11:21:21,233 INFO L146 ILogger]: 0 DeclaredPredicates, 317 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2019-05-23 11:21:21,234 INFO L146 ILogger]: Start minimizeSevpa. Operand 457 states. [2019-05-23 11:21:21,239 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 457 to 307. [2019-05-23 11:21:21,239 INFO L146 ILogger]: Start removeUnreachable. Operand 307 states. [2019-05-23 11:21:21,240 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 307 states to 307 states and 309 transitions. [2019-05-23 11:21:21,240 INFO L146 ILogger]: Start accepts. Automaton has 307 states and 309 transitions. Word has length 276 [2019-05-23 11:21:21,240 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:21,241 INFO L146 ILogger]: Abstraction has 307 states and 309 transitions. [2019-05-23 11:21:21,241 INFO L146 ILogger]: Interpolant automaton has 45 states. [2019-05-23 11:21:21,241 INFO L146 ILogger]: Start isEmpty. Operand 307 states and 309 transitions. [2019-05-23 11:21:21,242 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 303 [2019-05-23 11:21:21,242 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:21,243 INFO L146 ILogger]: trace histogram [43, 43, 43, 43, 43, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:21,243 INFO L146 ILogger]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:21,243 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:21,243 INFO L146 ILogger]: Analyzing trace with hash 1071996653, now seen corresponding path program 23 times [2019-05-23 11:21:21,244 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:21,244 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:21,244 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:21,245 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:21,245 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:21,294 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:23,404 INFO L146 ILogger]: Checked inductivity of 4899 backedges. 0 proven. 4558 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2019-05-23 11:21:23,405 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:23,405 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:21:23,415 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1