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-industry-pattern/array_of_struct_ptr_cond_init_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:21:49,234 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:21:49,236 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:21:49,251 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:21:49,251 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:21:49,253 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:21:49,255 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:21:49,257 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:21:49,259 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:21:49,260 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:21:49,261 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:21:49,261 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:21:49,264 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:21:49,265 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:21:49,266 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:21:49,268 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:21:49,269 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:21:49,272 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:21:49,275 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:21:49,276 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:21:49,277 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:21:49,278 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:21:49,281 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:21:49,281 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:21:49,282 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:21:49,283 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:21:49,283 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:21:49,284 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:21:49,284 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:21:49,285 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:21:49,286 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:21:49,287 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:21:49,288 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:21:49,288 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:21:49,289 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:21:49,289 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:21:49,289 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:21:49,290 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:21:49,291 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:21:49,291 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:21:49,316 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:21:49,317 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:21:49,318 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:21:49,318 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:21:49,318 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:21:49,319 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:21:49,319 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:21:49,319 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:21:49,319 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:21:49,319 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:21:49,320 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:21:49,320 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:21:49,320 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:21:49,320 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:21:49,321 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:21:49,321 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:21:49,321 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:21:49,321 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:21:49,321 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:21:49,322 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:21:49,322 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:21:49,322 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:21:49,322 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:21:49,323 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:21:49,323 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:21:49,323 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:21:49,323 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:21:49,323 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:21:49,324 INFO L146 ILogger]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Command for external solver -> z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement [2019-05-23 11:21:49,366 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:21:49,384 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:21:49,391 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:21:49,392 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:21:49,393 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:21:49,393 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-industry-pattern/array_of_struct_ptr_cond_init_true-unreach-call.i [2019-05-23 11:21:49,467 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a340f041a/641dcd3dce8b47f18464f3c6c86d6e99/FLAG867b01d79 [2019-05-23 11:21:49,951 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:21:49,952 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-industry-pattern/array_of_struct_ptr_cond_init_true-unreach-call.i [2019-05-23 11:21:49,959 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a340f041a/641dcd3dce8b47f18464f3c6c86d6e99/FLAG867b01d79 [2019-05-23 11:21:50,259 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a340f041a/641dcd3dce8b47f18464f3c6c86d6e99 [2019-05-23 11:21:50,268 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:21:50,269 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:21:50,270 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:21:50,271 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:21:50,274 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:21:50,275 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:21:50" (1/1) ... [2019-05-23 11:21:50,278 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76f9b05d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:50, skipping insertion in model container [2019-05-23 11:21:50,278 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:21:50" (1/1) ... [2019-05-23 11:21:50,286 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:21:50,306 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:21:50,487 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:21:50,503 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:21:50,524 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:21:50,542 INFO L146 ILogger]: Completed translation [2019-05-23 11:21:50,543 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:50 WrapperNode [2019-05-23 11:21:50,543 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:21:50,544 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:21:50,544 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:21:50,544 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:21:50,551 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:50" (1/1) ... [2019-05-23 11:21:50,560 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:50" (1/1) ... [2019-05-23 11:21:50,581 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:21:50,582 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:21:50,582 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:21:50,582 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:21:50,679 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:50" (1/1) ... [2019-05-23 11:21:50,681 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:50" (1/1) ... [2019-05-23 11:21:50,685 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:50" (1/1) ... [2019-05-23 11:21:50,685 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:50" (1/1) ... [2019-05-23 11:21:50,692 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:50" (1/1) ... [2019-05-23 11:21:50,697 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:50" (1/1) ... [2019-05-23 11:21:50,699 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:50" (1/1) ... [2019-05-23 11:21:50,702 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:21:50,702 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:21:50,702 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:21:50,703 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:21:50,704 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:50" (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 11:21:50,756 INFO L146 ILogger]: Found specification of procedure read~$Pointer$ [2019-05-23 11:21:50,756 INFO L146 ILogger]: Found specification of procedure write~$Pointer$ [2019-05-23 11:21:50,756 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:21:50,756 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:21:50,757 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnHeap [2019-05-23 11:21:50,757 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:21:50,757 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:21:50,757 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:21:51,255 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:21:51,256 INFO L146 ILogger]: Removed 10 assume(true) statements. [2019-05-23 11:21:51,257 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:21:51 BoogieIcfgContainer [2019-05-23 11:21:51,258 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:21:51,259 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:21:51,259 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:21:51,262 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:21:51,262 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:21:50" (1/3) ... [2019-05-23 11:21:51,263 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b3e6c8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:21:51, skipping insertion in model container [2019-05-23 11:21:51,263 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:50" (2/3) ... [2019-05-23 11:21:51,264 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b3e6c8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:21:51, skipping insertion in model container [2019-05-23 11:21:51,264 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:21:51" (3/3) ... [2019-05-23 11:21:51,266 INFO L146 ILogger]: Analyzing ICFG array_of_struct_ptr_cond_init_true-unreach-call.i [2019-05-23 11:21:51,277 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:21:51,287 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:21:51,304 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:21:51,331 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:21:51,331 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:21:51,332 INFO L146 ILogger]: Hoare is true [2019-05-23 11:21:51,332 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:21:51,333 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:21:51,333 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:21:51,333 INFO L146 ILogger]: Difference is false [2019-05-23 11:21:51,333 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:21:51,334 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:21:51,349 INFO L146 ILogger]: Start isEmpty. Operand 56 states. [2019-05-23 11:21:51,356 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 24 [2019-05-23 11:21:51,356 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:51,357 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:51,359 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:51,364 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:51,364 INFO L146 ILogger]: Analyzing trace with hash 1997510170, now seen corresponding path program 1 times [2019-05-23 11:21:51,366 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:51,367 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:51,420 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:51,421 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:51,421 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:51,459 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:51,495 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 11:21:51,498 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:21:51,498 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:21:51,501 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:21:51,511 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:21:51,512 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:21:51,514 INFO L146 ILogger]: Start difference. First operand 56 states. Second operand 2 states. [2019-05-23 11:21:51,531 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:51,531 INFO L146 ILogger]: Finished difference Result 80 states and 89 transitions. [2019-05-23 11:21:51,532 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:21:51,533 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 23 [2019-05-23 11:21:51,533 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:51,542 INFO L146 ILogger]: With dead ends: 80 [2019-05-23 11:21:51,542 INFO L146 ILogger]: Without dead ends: 52 [2019-05-23 11:21:51,545 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 11:21:51,564 INFO L146 ILogger]: Start minimizeSevpa. Operand 52 states. [2019-05-23 11:21:51,579 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 52 to 52. [2019-05-23 11:21:51,580 INFO L146 ILogger]: Start removeUnreachable. Operand 52 states. [2019-05-23 11:21:51,581 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2019-05-23 11:21:51,583 INFO L146 ILogger]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 23 [2019-05-23 11:21:51,583 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:51,583 INFO L146 ILogger]: Abstraction has 52 states and 55 transitions. [2019-05-23 11:21:51,583 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:21:51,584 INFO L146 ILogger]: Start isEmpty. Operand 52 states and 55 transitions. [2019-05-23 11:21:51,585 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 24 [2019-05-23 11:21:51,585 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:51,585 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:51,585 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:51,586 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:51,586 INFO L146 ILogger]: Analyzing trace with hash -2014611080, now seen corresponding path program 1 times [2019-05-23 11:21:51,586 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:51,586 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:51,587 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:51,588 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:51,588 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:51,601 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:51,663 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 11:21:51,663 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:21:51,663 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:21:51,665 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:21:51,665 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:21:51,666 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:21:51,666 INFO L146 ILogger]: Start difference. First operand 52 states and 55 transitions. Second operand 3 states. [2019-05-23 11:21:51,815 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:51,815 INFO L146 ILogger]: Finished difference Result 113 states and 120 transitions. [2019-05-23 11:21:51,815 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:21:51,816 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 23 [2019-05-23 11:21:51,816 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:51,817 INFO L146 ILogger]: With dead ends: 113 [2019-05-23 11:21:51,817 INFO L146 ILogger]: Without dead ends: 93 [2019-05-23 11:21:51,819 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 11:21:51,820 INFO L146 ILogger]: Start minimizeSevpa. Operand 93 states. [2019-05-23 11:21:51,826 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 93 to 53. [2019-05-23 11:21:51,827 INFO L146 ILogger]: Start removeUnreachable. Operand 53 states. [2019-05-23 11:21:51,828 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2019-05-23 11:21:51,828 INFO L146 ILogger]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 23 [2019-05-23 11:21:51,829 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:51,829 INFO L146 ILogger]: Abstraction has 53 states and 56 transitions. [2019-05-23 11:21:51,829 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:21:51,829 INFO L146 ILogger]: Start isEmpty. Operand 53 states and 56 transitions. [2019-05-23 11:21:51,830 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 45 [2019-05-23 11:21:51,830 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:51,830 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:51,831 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:51,831 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:51,831 INFO L146 ILogger]: Analyzing trace with hash -1324688320, now seen corresponding path program 1 times [2019-05-23 11:21:51,831 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:51,832 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:51,833 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:51,833 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:51,833 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:51,861 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:52,162 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:52,162 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:52,162 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 11:21:52,185 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:52,253 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:52,255 INFO L146 ILogger]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:21:52,267 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:52,357 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:52,387 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:52,387 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-05-23 11:21:52,389 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:21:52,389 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:21:52,390 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:21:52,392 INFO L146 ILogger]: Start difference. First operand 53 states and 56 transitions. Second operand 7 states. [2019-05-23 11:21:52,771 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:52,772 INFO L146 ILogger]: Finished difference Result 137 states and 145 transitions. [2019-05-23 11:21:52,772 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:21:52,772 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 44 [2019-05-23 11:21:52,773 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:52,776 INFO L146 ILogger]: With dead ends: 137 [2019-05-23 11:21:52,776 INFO L146 ILogger]: Without dead ends: 117 [2019-05-23 11:21:52,777 INFO L146 ILogger]: 0 DeclaredPredicates, 50 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:21:52,778 INFO L146 ILogger]: Start minimizeSevpa. Operand 117 states. [2019-05-23 11:21:52,787 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 117 to 77. [2019-05-23 11:21:52,787 INFO L146 ILogger]: Start removeUnreachable. Operand 77 states. [2019-05-23 11:21:52,791 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2019-05-23 11:21:52,791 INFO L146 ILogger]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 44 [2019-05-23 11:21:52,792 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:52,792 INFO L146 ILogger]: Abstraction has 77 states and 81 transitions. [2019-05-23 11:21:52,792 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:21:52,792 INFO L146 ILogger]: Start isEmpty. Operand 77 states and 81 transitions. [2019-05-23 11:21:52,794 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 66 [2019-05-23 11:21:52,794 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:52,794 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:52,795 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:52,795 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:52,795 INFO L146 ILogger]: Analyzing trace with hash 188122744, now seen corresponding path program 2 times [2019-05-23 11:21:52,796 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:52,796 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:52,797 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:52,797 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:52,797 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:52,840 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:53,003 INFO L146 ILogger]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:53,004 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:53,004 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 11:21:53,039 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:21:53,100 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:21:53,100 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:53,102 INFO L146 ILogger]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:21:53,105 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:53,186 INFO L146 ILogger]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:53,215 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:53,215 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2019-05-23 11:21:53,216 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:21:53,216 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:21:53,217 INFO L146 ILogger]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:21:53,217 INFO L146 ILogger]: Start difference. First operand 77 states and 81 transitions. Second operand 9 states. [2019-05-23 11:21:53,905 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:53,905 INFO L146 ILogger]: Finished difference Result 161 states and 170 transitions. [2019-05-23 11:21:53,906 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-05-23 11:21:53,906 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 65 [2019-05-23 11:21:53,907 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:53,908 INFO L146 ILogger]: With dead ends: 161 [2019-05-23 11:21:53,908 INFO L146 ILogger]: Without dead ends: 141 [2019-05-23 11:21:53,910 INFO L146 ILogger]: 0 DeclaredPredicates, 75 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:21:53,911 INFO L146 ILogger]: Start minimizeSevpa. Operand 141 states. [2019-05-23 11:21:53,925 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 141 to 101. [2019-05-23 11:21:53,925 INFO L146 ILogger]: Start removeUnreachable. Operand 101 states. [2019-05-23 11:21:53,927 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 101 states to 101 states and 106 transitions. [2019-05-23 11:21:53,927 INFO L146 ILogger]: Start accepts. Automaton has 101 states and 106 transitions. Word has length 65 [2019-05-23 11:21:53,927 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:53,928 INFO L146 ILogger]: Abstraction has 101 states and 106 transitions. [2019-05-23 11:21:53,928 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:21:53,928 INFO L146 ILogger]: Start isEmpty. Operand 101 states and 106 transitions. [2019-05-23 11:21:53,929 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 87 [2019-05-23 11:21:53,929 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:53,930 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:53,930 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:53,930 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:53,930 INFO L146 ILogger]: Analyzing trace with hash -2061897920, now seen corresponding path program 3 times [2019-05-23 11:21:53,931 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:53,931 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:53,932 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:53,932 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:53,932 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:53,965 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:54,152 INFO L146 ILogger]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:54,153 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:54,153 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:21:54,165 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:21:54,302 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:21:54,303 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:54,304 INFO L146 ILogger]: Trace formula consists of 187 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:21:54,310 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:54,387 INFO L146 ILogger]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:54,407 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:54,407 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2019-05-23 11:21:54,408 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:21:54,408 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:21:54,408 INFO L146 ILogger]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:21:54,408 INFO L146 ILogger]: Start difference. First operand 101 states and 106 transitions. Second operand 11 states. [2019-05-23 11:21:54,929 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:54,929 INFO L146 ILogger]: Finished difference Result 185 states and 195 transitions. [2019-05-23 11:21:54,930 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:21:54,930 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 86 [2019-05-23 11:21:54,931 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:54,932 INFO L146 ILogger]: With dead ends: 185 [2019-05-23 11:21:54,932 INFO L146 ILogger]: Without dead ends: 165 [2019-05-23 11:21:54,933 INFO L146 ILogger]: 0 DeclaredPredicates, 100 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:21:54,934 INFO L146 ILogger]: Start minimizeSevpa. Operand 165 states. [2019-05-23 11:21:54,942 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 165 to 125. [2019-05-23 11:21:54,942 INFO L146 ILogger]: Start removeUnreachable. Operand 125 states. [2019-05-23 11:21:54,943 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 125 states to 125 states and 131 transitions. [2019-05-23 11:21:54,944 INFO L146 ILogger]: Start accepts. Automaton has 125 states and 131 transitions. Word has length 86 [2019-05-23 11:21:54,944 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:54,945 INFO L146 ILogger]: Abstraction has 125 states and 131 transitions. [2019-05-23 11:21:54,945 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:21:54,945 INFO L146 ILogger]: Start isEmpty. Operand 125 states and 131 transitions. [2019-05-23 11:21:54,947 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 108 [2019-05-23 11:21:54,947 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:54,947 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:54,948 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:54,948 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:54,948 INFO L146 ILogger]: Analyzing trace with hash -1822338184, now seen corresponding path program 4 times [2019-05-23 11:21:54,948 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:54,949 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:54,950 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:54,950 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:54,950 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:54,977 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:55,273 INFO L146 ILogger]: Checked inductivity of 130 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:55,273 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:55,273 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 11:21:55,288 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:21:55,914 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:21:55,914 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:55,916 INFO L146 ILogger]: Trace formula consists of 232 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:21:55,920 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:56,026 INFO L146 ILogger]: Checked inductivity of 130 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:56,047 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:56,047 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2019-05-23 11:21:56,048 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:21:56,048 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:21:56,049 INFO L146 ILogger]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:21:56,049 INFO L146 ILogger]: Start difference. First operand 125 states and 131 transitions. Second operand 13 states. [2019-05-23 11:21:56,323 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:56,323 INFO L146 ILogger]: Finished difference Result 209 states and 220 transitions. [2019-05-23 11:21:56,324 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-05-23 11:21:56,325 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 107 [2019-05-23 11:21:56,325 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:56,326 INFO L146 ILogger]: With dead ends: 209 [2019-05-23 11:21:56,327 INFO L146 ILogger]: Without dead ends: 189 [2019-05-23 11:21:56,327 INFO L146 ILogger]: 0 DeclaredPredicates, 125 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:21:56,328 INFO L146 ILogger]: Start minimizeSevpa. Operand 189 states. [2019-05-23 11:21:56,336 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 189 to 149. [2019-05-23 11:21:56,336 INFO L146 ILogger]: Start removeUnreachable. Operand 149 states. [2019-05-23 11:21:56,337 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 149 states to 149 states and 156 transitions. [2019-05-23 11:21:56,337 INFO L146 ILogger]: Start accepts. Automaton has 149 states and 156 transitions. Word has length 107 [2019-05-23 11:21:56,338 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:56,338 INFO L146 ILogger]: Abstraction has 149 states and 156 transitions. [2019-05-23 11:21:56,338 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:21:56,338 INFO L146 ILogger]: Start isEmpty. Operand 149 states and 156 transitions. [2019-05-23 11:21:56,340 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 129 [2019-05-23 11:21:56,340 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:56,340 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1] [2019-05-23 11:21:56,341 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:56,341 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:56,341 INFO L146 ILogger]: Analyzing trace with hash -1314831808, now seen corresponding path program 5 times [2019-05-23 11:21:56,341 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:56,341 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:56,342 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:56,342 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:56,343 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:56,396 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:56,594 INFO L146 ILogger]: Checked inductivity of 215 backedges. 0 proven. 215 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:56,595 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:56,595 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 11:21:56,605 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:22:01,645 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-05-23 11:22:01,646 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:01,649 INFO L146 ILogger]: Trace formula consists of 277 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:22:01,655 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:01,725 INFO L146 ILogger]: Checked inductivity of 215 backedges. 0 proven. 215 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:01,745 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:01,746 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2019-05-23 11:22:01,746 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:22:01,746 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:22:01,747 INFO L146 ILogger]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:22:01,747 INFO L146 ILogger]: Start difference. First operand 149 states and 156 transitions. Second operand 15 states. [2019-05-23 11:22:01,970 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:01,971 INFO L146 ILogger]: Finished difference Result 233 states and 245 transitions. [2019-05-23 11:22:01,971 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:22:01,971 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 128 [2019-05-23 11:22:01,971 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:01,973 INFO L146 ILogger]: With dead ends: 233 [2019-05-23 11:22:01,973 INFO L146 ILogger]: Without dead ends: 213 [2019-05-23 11:22:01,974 INFO L146 ILogger]: 0 DeclaredPredicates, 150 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:22:01,975 INFO L146 ILogger]: Start minimizeSevpa. Operand 213 states. [2019-05-23 11:22:01,983 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 213 to 173. [2019-05-23 11:22:01,983 INFO L146 ILogger]: Start removeUnreachable. Operand 173 states. [2019-05-23 11:22:01,984 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 173 states to 173 states and 181 transitions. [2019-05-23 11:22:01,984 INFO L146 ILogger]: Start accepts. Automaton has 173 states and 181 transitions. Word has length 128 [2019-05-23 11:22:01,985 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:01,985 INFO L146 ILogger]: Abstraction has 173 states and 181 transitions. [2019-05-23 11:22:01,985 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:22:01,985 INFO L146 ILogger]: Start isEmpty. Operand 173 states and 181 transitions. [2019-05-23 11:22:01,987 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 150 [2019-05-23 11:22:01,987 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:01,988 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1] [2019-05-23 11:22:01,988 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:01,988 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:01,989 INFO L146 ILogger]: Analyzing trace with hash -1396973448, now seen corresponding path program 6 times [2019-05-23 11:22:01,989 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:01,989 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:01,990 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:01,990 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:01,990 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:02,017 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:02,930 INFO L146 ILogger]: Checked inductivity of 321 backedges. 0 proven. 321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:02,931 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:02,931 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:22:02,940 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:22:08,689 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-05-23 11:22:08,689 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:08,694 INFO L146 ILogger]: Trace formula consists of 322 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:22:08,698 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:08,779 INFO L146 ILogger]: Checked inductivity of 321 backedges. 0 proven. 321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:08,800 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:08,801 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2019-05-23 11:22:08,801 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:22:08,801 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:22:08,802 INFO L146 ILogger]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:22:08,802 INFO L146 ILogger]: Start difference. First operand 173 states and 181 transitions. Second operand 17 states. [2019-05-23 11:22:09,103 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:09,104 INFO L146 ILogger]: Finished difference Result 257 states and 270 transitions. [2019-05-23 11:22:09,104 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:22:09,104 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 149 [2019-05-23 11:22:09,105 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:09,107 INFO L146 ILogger]: With dead ends: 257 [2019-05-23 11:22:09,107 INFO L146 ILogger]: Without dead ends: 237 [2019-05-23 11:22:09,109 INFO L146 ILogger]: 0 DeclaredPredicates, 175 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:22:09,110 INFO L146 ILogger]: Start minimizeSevpa. Operand 237 states. [2019-05-23 11:22:09,117 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 237 to 197. [2019-05-23 11:22:09,117 INFO L146 ILogger]: Start removeUnreachable. Operand 197 states. [2019-05-23 11:22:09,118 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 197 states to 197 states and 206 transitions. [2019-05-23 11:22:09,118 INFO L146 ILogger]: Start accepts. Automaton has 197 states and 206 transitions. Word has length 149 [2019-05-23 11:22:09,119 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:09,119 INFO L146 ILogger]: Abstraction has 197 states and 206 transitions. [2019-05-23 11:22:09,119 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:22:09,119 INFO L146 ILogger]: Start isEmpty. Operand 197 states and 206 transitions. [2019-05-23 11:22:09,122 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 171 [2019-05-23 11:22:09,122 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:09,122 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 1, 1] [2019-05-23 11:22:09,122 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:09,123 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:09,123 INFO L146 ILogger]: Analyzing trace with hash 2085672256, now seen corresponding path program 7 times [2019-05-23 11:22:09,123 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:09,123 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:09,124 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:09,124 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:09,124 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:09,150 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:09,449 INFO L146 ILogger]: Checked inductivity of 448 backedges. 0 proven. 448 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:09,450 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:09,450 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:22:09,459 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:09,536 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:09,538 INFO L146 ILogger]: Trace formula consists of 367 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:22:09,542 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:09,628 INFO L146 ILogger]: Checked inductivity of 448 backedges. 0 proven. 448 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:09,647 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:09,647 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2019-05-23 11:22:09,648 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:22:09,648 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:22:09,649 INFO L146 ILogger]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:22:09,649 INFO L146 ILogger]: Start difference. First operand 197 states and 206 transitions. Second operand 19 states. [2019-05-23 11:22:10,220 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:10,221 INFO L146 ILogger]: Finished difference Result 281 states and 295 transitions. [2019-05-23 11:22:10,224 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:22:10,224 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 170 [2019-05-23 11:22:10,225 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:10,226 INFO L146 ILogger]: With dead ends: 281 [2019-05-23 11:22:10,226 INFO L146 ILogger]: Without dead ends: 261 [2019-05-23 11:22:10,227 INFO L146 ILogger]: 0 DeclaredPredicates, 200 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:22:10,228 INFO L146 ILogger]: Start minimizeSevpa. Operand 261 states. [2019-05-23 11:22:10,233 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 261 to 221. [2019-05-23 11:22:10,234 INFO L146 ILogger]: Start removeUnreachable. Operand 221 states. [2019-05-23 11:22:10,235 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 221 states to 221 states and 231 transitions. [2019-05-23 11:22:10,235 INFO L146 ILogger]: Start accepts. Automaton has 221 states and 231 transitions. Word has length 170 [2019-05-23 11:22:10,235 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:10,235 INFO L146 ILogger]: Abstraction has 221 states and 231 transitions. [2019-05-23 11:22:10,236 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:22:10,236 INFO L146 ILogger]: Start isEmpty. Operand 221 states and 231 transitions. [2019-05-23 11:22:10,238 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 192 [2019-05-23 11:22:10,239 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:10,239 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 1, 1] [2019-05-23 11:22:10,239 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:10,240 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:10,240 INFO L146 ILogger]: Analyzing trace with hash 2140548472, now seen corresponding path program 8 times [2019-05-23 11:22:10,240 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:10,240 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:10,241 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:10,241 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:10,241 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:10,279 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:10,896 INFO L146 ILogger]: Checked inductivity of 596 backedges. 0 proven. 596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:10,897 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:10,897 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:22:10,907 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:22:10,977 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:22:10,978 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:10,979 INFO L146 ILogger]: Trace formula consists of 412 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:22:10,982 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:11,056 INFO L146 ILogger]: Checked inductivity of 596 backedges. 0 proven. 596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:11,082 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:11,082 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-05-23 11:22:11,083 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:22:11,083 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:22:11,083 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:22:11,083 INFO L146 ILogger]: Start difference. First operand 221 states and 231 transitions. Second operand 21 states. [2019-05-23 11:22:11,590 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:11,590 INFO L146 ILogger]: Finished difference Result 305 states and 320 transitions. [2019-05-23 11:22:11,591 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:22:11,591 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 191 [2019-05-23 11:22:11,592 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:11,594 INFO L146 ILogger]: With dead ends: 305 [2019-05-23 11:22:11,594 INFO L146 ILogger]: Without dead ends: 285 [2019-05-23 11:22:11,595 INFO L146 ILogger]: 0 DeclaredPredicates, 225 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:22:11,596 INFO L146 ILogger]: Start minimizeSevpa. Operand 285 states. [2019-05-23 11:22:11,600 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 285 to 245. [2019-05-23 11:22:11,601 INFO L146 ILogger]: Start removeUnreachable. Operand 245 states. [2019-05-23 11:22:11,602 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 245 states to 245 states and 256 transitions. [2019-05-23 11:22:11,602 INFO L146 ILogger]: Start accepts. Automaton has 245 states and 256 transitions. Word has length 191 [2019-05-23 11:22:11,602 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:11,602 INFO L146 ILogger]: Abstraction has 245 states and 256 transitions. [2019-05-23 11:22:11,603 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:22:11,603 INFO L146 ILogger]: Start isEmpty. Operand 245 states and 256 transitions. [2019-05-23 11:22:11,605 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 213 [2019-05-23 11:22:11,605 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:11,606 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 1, 1] [2019-05-23 11:22:11,606 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:11,606 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:11,607 INFO L146 ILogger]: Analyzing trace with hash 249079872, now seen corresponding path program 9 times [2019-05-23 11:22:11,607 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:11,607 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:11,608 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:11,608 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:11,608 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:11,635 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:11,992 INFO L146 ILogger]: Checked inductivity of 765 backedges. 0 proven. 765 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:11,992 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:11,992 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 11:22:12,001 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:23:00,732 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-05-23 11:23:00,732 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:00,743 INFO L146 ILogger]: Trace formula consists of 457 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:23:00,747 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:00,809 INFO L146 ILogger]: Checked inductivity of 765 backedges. 0 proven. 765 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:23:00,846 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:00,846 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2019-05-23 11:23:00,847 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:23:00,847 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:23:00,847 INFO L146 ILogger]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:23:00,848 INFO L146 ILogger]: Start difference. First operand 245 states and 256 transitions. Second operand 23 states. [2019-05-23 11:23:01,538 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:01,538 INFO L146 ILogger]: Finished difference Result 329 states and 345 transitions. [2019-05-23 11:23:01,538 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:23:01,538 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 212 [2019-05-23 11:23:01,539 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:01,542 INFO L146 ILogger]: With dead ends: 329 [2019-05-23 11:23:01,542 INFO L146 ILogger]: Without dead ends: 309 [2019-05-23 11:23:01,543 INFO L146 ILogger]: 0 DeclaredPredicates, 250 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:23:01,544 INFO L146 ILogger]: Start minimizeSevpa. Operand 309 states. [2019-05-23 11:23:01,548 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 309 to 269. [2019-05-23 11:23:01,548 INFO L146 ILogger]: Start removeUnreachable. Operand 269 states. [2019-05-23 11:23:01,549 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 269 states to 269 states and 281 transitions. [2019-05-23 11:23:01,550 INFO L146 ILogger]: Start accepts. Automaton has 269 states and 281 transitions. Word has length 212 [2019-05-23 11:23:01,550 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:01,550 INFO L146 ILogger]: Abstraction has 269 states and 281 transitions. [2019-05-23 11:23:01,550 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:23:01,551 INFO L146 ILogger]: Start isEmpty. Operand 269 states and 281 transitions. [2019-05-23 11:23:01,553 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 234 [2019-05-23 11:23:01,553 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:01,553 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 1, 1] [2019-05-23 11:23:01,553 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:01,554 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:01,554 INFO L146 ILogger]: Analyzing trace with hash -801097096, now seen corresponding path program 10 times [2019-05-23 11:23:01,554 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:01,554 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:01,555 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:01,555 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:01,555 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:01,584 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:02,446 INFO L146 ILogger]: Checked inductivity of 955 backedges. 0 proven. 955 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:23:02,447 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:02,447 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 11:23:02,457 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST