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_09_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:20:40,237 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:20:40,240 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:20:40,252 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:20:40,253 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:20:40,254 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:20:40,256 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:20:40,258 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:20:40,260 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:20:40,261 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:20:40,262 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:20:40,262 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:20:40,263 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:20:40,265 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:20:40,266 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:20:40,267 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:20:40,268 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:20:40,270 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:20:40,272 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:20:40,274 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:20:40,276 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:20:40,277 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:20:40,280 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:20:40,280 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:20:40,280 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:20:40,281 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:20:40,282 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:20:40,283 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:20:40,283 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:20:40,284 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:20:40,285 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:20:40,286 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:20:40,287 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:20:40,287 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:20:40,288 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:20:40,288 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:20:40,289 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:20:40,290 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:20:40,290 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:20:40,291 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:20:40,306 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:20:40,307 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:20:40,308 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:20:40,308 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:20:40,309 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:20:40,309 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:20:40,309 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:20:40,309 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:20:40,309 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:20:40,310 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:20:40,310 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:20:40,310 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:20:40,310 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:20:40,310 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:20:40,311 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:20:40,311 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:20:40,311 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:20:40,311 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:20:40,312 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:20:40,312 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:20:40,312 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:20:40,312 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:20:40,312 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:20:40,313 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:20:40,313 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:20:40,313 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:20:40,313 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:20:40,314 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:20:40,314 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 11:20:40,345 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:20:40,358 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:20:40,362 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:20:40,363 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:20:40,364 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:20:40,364 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_two_index_09_true-unreach-call.i [2019-05-23 11:20:40,422 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcd849efe/1e96a23aa8dd4c4a8dc7ebb42702b89a/FLAGca76d9e8b [2019-05-23 11:20:40,828 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:20:40,829 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_two_index_09_true-unreach-call.i [2019-05-23 11:20:40,835 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcd849efe/1e96a23aa8dd4c4a8dc7ebb42702b89a/FLAGca76d9e8b [2019-05-23 11:20:41,220 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcd849efe/1e96a23aa8dd4c4a8dc7ebb42702b89a [2019-05-23 11:20:41,233 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:20:41,235 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:20:41,236 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:20:41,236 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:20:41,241 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:20:41,242 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:20:41" (1/1) ... [2019-05-23 11:20:41,245 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29d55b2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:41, skipping insertion in model container [2019-05-23 11:20:41,246 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:20:41" (1/1) ... [2019-05-23 11:20:41,253 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:20:41,272 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:20:41,473 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:20:41,479 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:20:41,513 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:20:41,535 INFO L146 ILogger]: Completed translation [2019-05-23 11:20:41,536 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:41 WrapperNode [2019-05-23 11:20:41,536 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:20:41,537 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:20:41,538 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:20:41,538 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:20:41,547 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:41" (1/1) ... [2019-05-23 11:20:41,555 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:41" (1/1) ... [2019-05-23 11:20:41,576 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:20:41,577 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:20:41,577 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:20:41,577 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:20:41,587 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:41" (1/1) ... [2019-05-23 11:20:41,587 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:41" (1/1) ... [2019-05-23 11:20:41,589 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:41" (1/1) ... [2019-05-23 11:20:41,589 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:41" (1/1) ... [2019-05-23 11:20:41,595 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:41" (1/1) ... [2019-05-23 11:20:41,600 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:41" (1/1) ... [2019-05-23 11:20:41,601 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:41" (1/1) ... [2019-05-23 11:20:41,604 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:20:41,605 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:20:41,605 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:20:41,605 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:20:41,606 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:41" (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 11:20:41,760 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:20:41,760 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:20:41,760 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:20:41,761 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:20:41,761 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:20:41,761 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:20:42,205 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:20:42,205 INFO L146 ILogger]: Removed 9 assume(true) statements. [2019-05-23 11:20:42,206 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:20:42 BoogieIcfgContainer [2019-05-23 11:20:42,206 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:20:42,207 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:20:42,208 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:20:42,211 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:20:42,211 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:20:41" (1/3) ... [2019-05-23 11:20:42,212 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a6b7d5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:20:42, skipping insertion in model container [2019-05-23 11:20:42,212 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:41" (2/3) ... [2019-05-23 11:20:42,212 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a6b7d5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:20:42, skipping insertion in model container [2019-05-23 11:20:42,213 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:20:42" (3/3) ... [2019-05-23 11:20:42,214 INFO L146 ILogger]: Analyzing ICFG standard_two_index_09_true-unreach-call.i [2019-05-23 11:20:42,224 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:20:42,232 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:20:42,249 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:20:42,278 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:20:42,279 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:20:42,279 INFO L146 ILogger]: Hoare is true [2019-05-23 11:20:42,280 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:20:42,280 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:20:42,280 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:20:42,280 INFO L146 ILogger]: Difference is false [2019-05-23 11:20:42,280 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:20:42,280 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:20:42,298 INFO L146 ILogger]: Start isEmpty. Operand 43 states. [2019-05-23 11:20:42,305 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 22 [2019-05-23 11:20:42,305 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:42,306 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:42,308 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:42,314 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:42,314 INFO L146 ILogger]: Analyzing trace with hash -1541380129, now seen corresponding path program 1 times [2019-05-23 11:20:42,316 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:42,317 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:42,354 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:42,354 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:42,354 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:42,389 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:42,437 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 11:20:42,440 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:20:42,440 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:20:42,443 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:20:42,455 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:20:42,456 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:20:42,458 INFO L146 ILogger]: Start difference. First operand 43 states. Second operand 2 states. [2019-05-23 11:20:42,476 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:42,477 INFO L146 ILogger]: Finished difference Result 73 states and 83 transitions. [2019-05-23 11:20:42,477 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:20:42,478 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 21 [2019-05-23 11:20:42,478 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:42,489 INFO L146 ILogger]: With dead ends: 73 [2019-05-23 11:20:42,489 INFO L146 ILogger]: Without dead ends: 35 [2019-05-23 11:20:42,493 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 11:20:42,510 INFO L146 ILogger]: Start minimizeSevpa. Operand 35 states. [2019-05-23 11:20:42,522 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-05-23 11:20:42,524 INFO L146 ILogger]: Start removeUnreachable. Operand 35 states. [2019-05-23 11:20:42,525 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2019-05-23 11:20:42,527 INFO L146 ILogger]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 21 [2019-05-23 11:20:42,527 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:42,527 INFO L146 ILogger]: Abstraction has 35 states and 37 transitions. [2019-05-23 11:20:42,527 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:20:42,528 INFO L146 ILogger]: Start isEmpty. Operand 35 states and 37 transitions. [2019-05-23 11:20:42,529 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 22 [2019-05-23 11:20:42,529 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:42,529 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 11:20:42,530 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:42,530 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:42,530 INFO L146 ILogger]: Analyzing trace with hash 805843927, now seen corresponding path program 1 times [2019-05-23 11:20:42,530 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:42,530 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:42,532 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:42,532 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:42,532 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:42,545 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:42,607 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:42,607 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:20:42,607 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:20:42,609 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:20:42,609 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:20:42,610 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:20:42,610 INFO L146 ILogger]: Start difference. First operand 35 states and 37 transitions. Second operand 3 states. [2019-05-23 11:20:42,718 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:42,718 INFO L146 ILogger]: Finished difference Result 62 states and 66 transitions. [2019-05-23 11:20:42,720 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:20:42,720 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 21 [2019-05-23 11:20:42,720 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:42,722 INFO L146 ILogger]: With dead ends: 62 [2019-05-23 11:20:42,722 INFO L146 ILogger]: Without dead ends: 40 [2019-05-23 11:20:42,724 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 11:20:42,724 INFO L146 ILogger]: Start minimizeSevpa. Operand 40 states. [2019-05-23 11:20:42,729 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 40 to 36. [2019-05-23 11:20:42,729 INFO L146 ILogger]: Start removeUnreachable. Operand 36 states. [2019-05-23 11:20:42,730 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2019-05-23 11:20:42,730 INFO L146 ILogger]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 21 [2019-05-23 11:20:42,731 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:42,731 INFO L146 ILogger]: Abstraction has 36 states and 38 transitions. [2019-05-23 11:20:42,731 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:20:42,731 INFO L146 ILogger]: Start isEmpty. Operand 36 states and 38 transitions. [2019-05-23 11:20:42,732 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 27 [2019-05-23 11:20:42,732 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:42,732 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 11:20:42,733 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:42,733 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:42,733 INFO L146 ILogger]: Analyzing trace with hash 1928914446, now seen corresponding path program 1 times [2019-05-23 11:20:42,733 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:42,733 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:42,735 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:42,735 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:42,735 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:42,757 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:42,814 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 11:20:42,815 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:20:42,815 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:20:42,815 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:20:42,816 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:20:42,816 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:20:42,816 INFO L146 ILogger]: Start difference. First operand 36 states and 38 transitions. Second operand 3 states. [2019-05-23 11:20:42,932 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:42,932 INFO L146 ILogger]: Finished difference Result 68 states and 71 transitions. [2019-05-23 11:20:42,934 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:20:42,934 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 26 [2019-05-23 11:20:42,934 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:42,935 INFO L146 ILogger]: With dead ends: 68 [2019-05-23 11:20:42,937 INFO L146 ILogger]: Without dead ends: 53 [2019-05-23 11:20:42,937 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 11:20:42,938 INFO L146 ILogger]: Start minimizeSevpa. Operand 53 states. [2019-05-23 11:20:42,942 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 53 to 37. [2019-05-23 11:20:42,942 INFO L146 ILogger]: Start removeUnreachable. Operand 37 states. [2019-05-23 11:20:42,943 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2019-05-23 11:20:42,944 INFO L146 ILogger]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 26 [2019-05-23 11:20:42,944 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:42,944 INFO L146 ILogger]: Abstraction has 37 states and 39 transitions. [2019-05-23 11:20:42,944 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:20:42,944 INFO L146 ILogger]: Start isEmpty. Operand 37 states and 39 transitions. [2019-05-23 11:20:42,945 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 33 [2019-05-23 11:20:42,945 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:42,946 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 11:20:42,946 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:42,946 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:42,947 INFO L146 ILogger]: Analyzing trace with hash 876855147, now seen corresponding path program 1 times [2019-05-23 11:20:42,947 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:42,947 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:42,948 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:42,948 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:42,948 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:42,971 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:43,083 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 11:20:43,083 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:43,083 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 11:20:43,097 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:43,141 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:43,143 INFO L146 ILogger]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:20:43,151 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:43,279 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 11:20:43,299 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:43,299 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-05-23 11:20:43,300 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:20:43,301 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:20:43,301 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:20:43,301 INFO L146 ILogger]: Start difference. First operand 37 states and 39 transitions. Second operand 5 states. [2019-05-23 11:20:43,427 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:43,427 INFO L146 ILogger]: Finished difference Result 85 states and 89 transitions. [2019-05-23 11:20:43,428 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:20:43,428 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 32 [2019-05-23 11:20:43,428 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:43,429 INFO L146 ILogger]: With dead ends: 85 [2019-05-23 11:20:43,429 INFO L146 ILogger]: Without dead ends: 62 [2019-05-23 11:20:43,429 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 11:20:43,430 INFO L146 ILogger]: Start minimizeSevpa. Operand 62 states. [2019-05-23 11:20:43,434 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 62 to 42. [2019-05-23 11:20:43,434 INFO L146 ILogger]: Start removeUnreachable. Operand 42 states. [2019-05-23 11:20:43,435 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2019-05-23 11:20:43,436 INFO L146 ILogger]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 32 [2019-05-23 11:20:43,436 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:43,436 INFO L146 ILogger]: Abstraction has 42 states and 44 transitions. [2019-05-23 11:20:43,436 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:20:43,436 INFO L146 ILogger]: Start isEmpty. Operand 42 states and 44 transitions. [2019-05-23 11:20:43,437 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 38 [2019-05-23 11:20:43,437 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:43,437 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 11:20:43,438 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:43,438 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:43,438 INFO L146 ILogger]: Analyzing trace with hash -411413292, now seen corresponding path program 2 times [2019-05-23 11:20:43,438 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:43,438 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:43,439 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:43,439 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:43,440 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:43,467 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:43,568 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 11:20:43,569 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:43,569 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 11:20:43,586 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:43,614 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:43,614 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:43,615 INFO L146 ILogger]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:20:43,618 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:43,645 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 11:20:43,665 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:43,665 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-05-23 11:20:43,666 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:20:43,666 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:20:43,667 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:20:43,668 INFO L146 ILogger]: Start difference. First operand 42 states and 44 transitions. Second operand 6 states. [2019-05-23 11:20:43,897 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:43,897 INFO L146 ILogger]: Finished difference Result 90 states and 94 transitions. [2019-05-23 11:20:43,901 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:20:43,901 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 37 [2019-05-23 11:20:43,902 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:43,903 INFO L146 ILogger]: With dead ends: 90 [2019-05-23 11:20:43,903 INFO L146 ILogger]: Without dead ends: 67 [2019-05-23 11:20:43,903 INFO L146 ILogger]: 0 DeclaredPredicates, 41 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:20:43,904 INFO L146 ILogger]: Start minimizeSevpa. Operand 67 states. [2019-05-23 11:20:43,908 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 67 to 47. [2019-05-23 11:20:43,909 INFO L146 ILogger]: Start removeUnreachable. Operand 47 states. [2019-05-23 11:20:43,909 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2019-05-23 11:20:43,910 INFO L146 ILogger]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 37 [2019-05-23 11:20:43,910 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:43,910 INFO L146 ILogger]: Abstraction has 47 states and 49 transitions. [2019-05-23 11:20:43,910 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:20:43,910 INFO L146 ILogger]: Start isEmpty. Operand 47 states and 49 transitions. [2019-05-23 11:20:43,911 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 43 [2019-05-23 11:20:43,911 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:43,912 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 11:20:43,912 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:43,912 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:43,912 INFO L146 ILogger]: Analyzing trace with hash -1153058549, now seen corresponding path program 3 times [2019-05-23 11:20:43,913 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:43,913 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:43,914 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:43,914 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:43,914 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:43,929 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:44,026 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 11:20:44,027 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:44,027 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 11:20:44,046 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:44,074 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:20:44,074 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:44,075 INFO L146 ILogger]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:20:44,077 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:44,119 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 11:20:44,138 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:44,139 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 7 [2019-05-23 11:20:44,139 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:20:44,139 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:20:44,140 INFO L146 ILogger]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:20:44,140 INFO L146 ILogger]: Start difference. First operand 47 states and 49 transitions. Second operand 7 states. [2019-05-23 11:20:44,427 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:44,427 INFO L146 ILogger]: Finished difference Result 119 states and 125 transitions. [2019-05-23 11:20:44,428 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:20:44,429 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 42 [2019-05-23 11:20:44,429 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:44,430 INFO L146 ILogger]: With dead ends: 119 [2019-05-23 11:20:44,430 INFO L146 ILogger]: Without dead ends: 96 [2019-05-23 11:20:44,430 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 11:20:44,432 INFO L146 ILogger]: Start minimizeSevpa. Operand 96 states. [2019-05-23 11:20:44,443 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 96 to 63. [2019-05-23 11:20:44,443 INFO L146 ILogger]: Start removeUnreachable. Operand 63 states. [2019-05-23 11:20:44,444 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2019-05-23 11:20:44,444 INFO L146 ILogger]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 42 [2019-05-23 11:20:44,445 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:44,448 INFO L146 ILogger]: Abstraction has 63 states and 65 transitions. [2019-05-23 11:20:44,448 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:20:44,448 INFO L146 ILogger]: Start isEmpty. Operand 63 states and 65 transitions. [2019-05-23 11:20:44,452 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 59 [2019-05-23 11:20:44,452 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:44,452 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 11:20:44,453 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:44,453 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:44,453 INFO L146 ILogger]: Analyzing trace with hash 1070488136, now seen corresponding path program 4 times [2019-05-23 11:20:44,455 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:44,455 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:44,456 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:44,456 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:44,456 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:44,499 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:44,672 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 11:20:44,672 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:44,673 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 11:20:44,685 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:20:44,715 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:20:44,715 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:44,717 INFO L146 ILogger]: Trace formula consists of 103 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:20:44,721 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:44,748 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 11:20:44,770 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:44,770 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2019-05-23 11:20:44,771 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:20:44,771 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:20:44,772 INFO L146 ILogger]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:20:44,772 INFO L146 ILogger]: Start difference. First operand 63 states and 65 transitions. Second operand 9 states. [2019-05-23 11:20:44,918 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:44,918 INFO L146 ILogger]: Finished difference Result 113 states and 117 transitions. [2019-05-23 11:20:44,919 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:20:44,919 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 58 [2019-05-23 11:20:44,920 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:44,921 INFO L146 ILogger]: With dead ends: 113 [2019-05-23 11:20:44,921 INFO L146 ILogger]: Without dead ends: 84 [2019-05-23 11:20:44,921 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 11:20:44,922 INFO L146 ILogger]: Start minimizeSevpa. Operand 84 states. [2019-05-23 11:20:44,926 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 84 to 68. [2019-05-23 11:20:44,927 INFO L146 ILogger]: Start removeUnreachable. Operand 68 states. [2019-05-23 11:20:44,927 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2019-05-23 11:20:44,927 INFO L146 ILogger]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 58 [2019-05-23 11:20:44,928 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:44,928 INFO L146 ILogger]: Abstraction has 68 states and 70 transitions. [2019-05-23 11:20:44,928 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:20:44,928 INFO L146 ILogger]: Start isEmpty. Operand 68 states and 70 transitions. [2019-05-23 11:20:44,929 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 64 [2019-05-23 11:20:44,929 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:44,929 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 11:20:44,930 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:44,930 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:44,930 INFO L146 ILogger]: Analyzing trace with hash 1820626545, now seen corresponding path program 5 times [2019-05-23 11:20:44,930 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:44,930 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:44,931 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:44,931 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:44,931 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:44,949 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:45,051 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 11:20:45,051 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:45,051 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 11:20:45,061 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:20:45,180 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-05-23 11:20:45,180 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:45,182 INFO L146 ILogger]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:20:45,184 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:45,397 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 11:20:45,418 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:45,418 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 11 [2019-05-23 11:20:45,419 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:20:45,419 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:20:45,419 INFO L146 ILogger]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:20:45,419 INFO L146 ILogger]: Start difference. First operand 68 states and 70 transitions. Second operand 11 states. [2019-05-23 11:20:45,836 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:45,836 INFO L146 ILogger]: Finished difference Result 164 states and 171 transitions. [2019-05-23 11:20:45,836 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 11:20:45,837 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 63 [2019-05-23 11:20:45,837 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:45,839 INFO L146 ILogger]: With dead ends: 164 [2019-05-23 11:20:45,839 INFO L146 ILogger]: Without dead ends: 135 [2019-05-23 11:20:45,840 INFO L146 ILogger]: 0 DeclaredPredicates, 71 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:20:45,841 INFO L146 ILogger]: Start minimizeSevpa. Operand 135 states. [2019-05-23 11:20:45,856 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 135 to 89. [2019-05-23 11:20:45,857 INFO L146 ILogger]: Start removeUnreachable. Operand 89 states. [2019-05-23 11:20:45,859 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 89 states to 89 states and 91 transitions. [2019-05-23 11:20:45,859 INFO L146 ILogger]: Start accepts. Automaton has 89 states and 91 transitions. Word has length 63 [2019-05-23 11:20:45,860 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:45,860 INFO L146 ILogger]: Abstraction has 89 states and 91 transitions. [2019-05-23 11:20:45,860 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:20:45,860 INFO L146 ILogger]: Start isEmpty. Operand 89 states and 91 transitions. [2019-05-23 11:20:45,862 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 85 [2019-05-23 11:20:45,862 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:45,863 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 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 11:20:45,863 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:45,863 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:45,864 INFO L146 ILogger]: Analyzing trace with hash 2137983845, now seen corresponding path program 6 times [2019-05-23 11:20:45,865 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:45,865 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:45,866 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:45,866 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:45,866 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:45,891 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:46,537 INFO L146 ILogger]: Checked inductivity of 210 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-05-23 11:20:46,537 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:46,538 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 11:20:46,550 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:20:46,615 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-05-23 11:20:46,615 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:46,616 INFO L146 ILogger]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:20:46,620 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:46,731 INFO L146 ILogger]: Checked inductivity of 210 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2019-05-23 11:20:46,750 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:46,750 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6] total 15 [2019-05-23 11:20:46,750 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:20:46,751 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:20:46,751 INFO L146 ILogger]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:20:46,751 INFO L146 ILogger]: Start difference. First operand 89 states and 91 transitions. Second operand 15 states. [2019-05-23 11:20:46,940 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:46,940 INFO L146 ILogger]: Finished difference Result 209 states and 217 transitions. [2019-05-23 11:20:46,940 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-05-23 11:20:46,941 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 84 [2019-05-23 11:20:46,941 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:46,942 INFO L146 ILogger]: With dead ends: 209 [2019-05-23 11:20:46,942 INFO L146 ILogger]: Without dead ends: 174 [2019-05-23 11:20:46,944 INFO L146 ILogger]: 0 DeclaredPredicates, 95 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:20:46,944 INFO L146 ILogger]: Start minimizeSevpa. Operand 174 states. [2019-05-23 11:20:46,951 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 174 to 115. [2019-05-23 11:20:46,951 INFO L146 ILogger]: Start removeUnreachable. Operand 115 states. [2019-05-23 11:20:46,952 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 115 states to 115 states and 117 transitions. [2019-05-23 11:20:46,952 INFO L146 ILogger]: Start accepts. Automaton has 115 states and 117 transitions. Word has length 84 [2019-05-23 11:20:46,952 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:46,953 INFO L146 ILogger]: Abstraction has 115 states and 117 transitions. [2019-05-23 11:20:46,953 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:20:46,953 INFO L146 ILogger]: Start isEmpty. Operand 115 states and 117 transitions. [2019-05-23 11:20:46,954 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 111 [2019-05-23 11:20:46,955 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:46,955 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 11:20:46,955 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:46,955 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:46,956 INFO L146 ILogger]: Analyzing trace with hash 1755325122, now seen corresponding path program 7 times [2019-05-23 11:20:46,956 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:46,956 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:46,957 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:46,957 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:46,957 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:46,981 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:47,278 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 11:20:47,278 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:47,278 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 11:20:47,289 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:47,328 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:47,329 INFO L146 ILogger]: Trace formula consists of 177 conjuncts, 15 conjunts are in the unsatisfiable core [2019-05-23 11:20:47,333 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:47,380 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 11:20:47,401 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:47,402 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2019-05-23 11:20:47,402 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:20:47,403 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:20:47,403 INFO L146 ILogger]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:20:47,403 INFO L146 ILogger]: Start difference. First operand 115 states and 117 transitions. Second operand 17 states. [2019-05-23 11:20:47,634 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:47,634 INFO L146 ILogger]: Finished difference Result 190 states and 194 transitions. [2019-05-23 11:20:47,634 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-05-23 11:20:47,635 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 110 [2019-05-23 11:20:47,635 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:47,636 INFO L146 ILogger]: With dead ends: 190 [2019-05-23 11:20:47,636 INFO L146 ILogger]: Without dead ends: 149 [2019-05-23 11:20:47,637 INFO L146 ILogger]: 0 DeclaredPredicates, 125 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:20:47,637 INFO L146 ILogger]: Start minimizeSevpa. Operand 149 states. [2019-05-23 11:20:47,642 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 149 to 120. [2019-05-23 11:20:47,643 INFO L146 ILogger]: Start removeUnreachable. Operand 120 states. [2019-05-23 11:20:47,643 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 120 states to 120 states and 122 transitions. [2019-05-23 11:20:47,644 INFO L146 ILogger]: Start accepts. Automaton has 120 states and 122 transitions. Word has length 110 [2019-05-23 11:20:47,644 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:47,644 INFO L146 ILogger]: Abstraction has 120 states and 122 transitions. [2019-05-23 11:20:47,644 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:20:47,644 INFO L146 ILogger]: Start isEmpty. Operand 120 states and 122 transitions. [2019-05-23 11:20:47,646 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 116 [2019-05-23 11:20:47,646 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:47,646 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 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 11:20:47,647 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:47,647 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:47,647 INFO L146 ILogger]: Analyzing trace with hash 1355465835, now seen corresponding path program 8 times [2019-05-23 11:20:47,647 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:47,647 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:47,648 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:47,648 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:47,648 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:47,670 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:47,969 INFO L146 ILogger]: Checked inductivity of 509 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-05-23 11:20:47,970 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:47,970 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:20:47,979 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:48,010 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:48,010 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:48,011 INFO L146 ILogger]: Trace formula consists of 184 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:20:48,015 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:48,046 INFO L146 ILogger]: Checked inductivity of 509 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-05-23 11:20:48,066 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:48,066 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2019-05-23 11:20:48,067 INFO L146 ILogger]: Interpolant automaton has 18 states [2019-05-23 11:20:48,067 INFO L146 ILogger]: Constructing interpolant automaton starting with 18 interpolants. [2019-05-23 11:20:48,068 INFO L146 ILogger]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-05-23 11:20:48,068 INFO L146 ILogger]: Start difference. First operand 120 states and 122 transitions. Second operand 18 states. [2019-05-23 11:20:48,291 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:48,292 INFO L146 ILogger]: Finished difference Result 195 states and 199 transitions. [2019-05-23 11:20:48,292 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-05-23 11:20:48,292 INFO L146 ILogger]: Start accepts. Automaton has 18 states. Word has length 115 [2019-05-23 11:20:48,293 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:48,294 INFO L146 ILogger]: With dead ends: 195 [2019-05-23 11:20:48,294 INFO L146 ILogger]: Without dead ends: 154 [2019-05-23 11:20:48,295 INFO L146 ILogger]: 0 DeclaredPredicates, 131 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-05-23 11:20:48,296 INFO L146 ILogger]: Start minimizeSevpa. Operand 154 states. [2019-05-23 11:20:48,300 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 154 to 125. [2019-05-23 11:20:48,301 INFO L146 ILogger]: Start removeUnreachable. Operand 125 states. [2019-05-23 11:20:48,301 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 125 states to 125 states and 127 transitions. [2019-05-23 11:20:48,302 INFO L146 ILogger]: Start accepts. Automaton has 125 states and 127 transitions. Word has length 115 [2019-05-23 11:20:48,302 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:48,302 INFO L146 ILogger]: Abstraction has 125 states and 127 transitions. [2019-05-23 11:20:48,302 INFO L146 ILogger]: Interpolant automaton has 18 states. [2019-05-23 11:20:48,302 INFO L146 ILogger]: Start isEmpty. Operand 125 states and 127 transitions. [2019-05-23 11:20:48,304 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 121 [2019-05-23 11:20:48,304 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:48,304 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 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 11:20:48,304 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:48,305 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:48,305 INFO L146 ILogger]: Analyzing trace with hash -813710238, now seen corresponding path program 9 times [2019-05-23 11:20:48,305 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:48,305 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:48,306 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:48,306 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:48,306 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:48,326 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:48,590 INFO L146 ILogger]: Checked inductivity of 580 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-05-23 11:20:48,590 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:48,590 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 11:20:48,598 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:48,659 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-05-23 11:20:48,659 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:48,660 INFO L146 ILogger]: Trace formula consists of 114 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:20:48,666 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:48,789 INFO L146 ILogger]: Checked inductivity of 580 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2019-05-23 11:20:48,809 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:48,809 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 7] total 21 [2019-05-23 11:20:48,810 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:20:48,810 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:20:48,810 INFO L146 ILogger]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:20:48,811 INFO L146 ILogger]: Start difference. First operand 125 states and 127 transitions. Second operand 21 states. [2019-05-23 11:20:49,166 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:49,167 INFO L146 ILogger]: Finished difference Result 264 states and 272 transitions. [2019-05-23 11:20:49,167 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:20:49,167 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 120 [2019-05-23 11:20:49,168 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:49,170 INFO L146 ILogger]: With dead ends: 264 [2019-05-23 11:20:49,170 INFO L146 ILogger]: Without dead ends: 223 [2019-05-23 11:20:49,170 INFO L146 ILogger]: 0 DeclaredPredicates, 137 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:20:49,171 INFO L146 ILogger]: Start minimizeSevpa. Operand 223 states. [2019-05-23 11:20:49,176 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 223 to 151. [2019-05-23 11:20:49,176 INFO L146 ILogger]: Start removeUnreachable. Operand 151 states. [2019-05-23 11:20:49,177 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 151 states to 151 states and 153 transitions. [2019-05-23 11:20:49,177 INFO L146 ILogger]: Start accepts. Automaton has 151 states and 153 transitions. Word has length 120 [2019-05-23 11:20:49,177 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:49,177 INFO L146 ILogger]: Abstraction has 151 states and 153 transitions. [2019-05-23 11:20:49,177 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:20:49,178 INFO L146 ILogger]: Start isEmpty. Operand 151 states and 153 transitions. [2019-05-23 11:20:49,179 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 147 [2019-05-23 11:20:49,179 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:49,180 INFO L146 ILogger]: trace histogram [19, 19, 19, 19, 19, 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 11:20:49,180 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:49,180 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:49,180 INFO L146 ILogger]: Analyzing trace with hash -348993025, now seen corresponding path program 10 times [2019-05-23 11:20:49,181 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:49,181 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:49,181 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:49,182 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:49,182 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:49,204 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:49,575 INFO L146 ILogger]: Checked inductivity of 939 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-05-23 11:20:49,575 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:49,576 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 11:20:49,585 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:20:50,043 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:20:50,043 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:50,046 INFO L146 ILogger]: Trace formula consists of 228 conjuncts, 21 conjunts are in the unsatisfiable core [2019-05-23 11:20:50,049 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:50,118 INFO L146 ILogger]: Checked inductivity of 939 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-05-23 11:20:50,137 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:50,137 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2019-05-23 11:20:50,138 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:20:50,138 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:20:50,139 INFO L146 ILogger]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:20:50,139 INFO L146 ILogger]: Start difference. First operand 151 states and 153 transitions. Second operand 23 states. [2019-05-23 11:20:50,384 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:50,384 INFO L146 ILogger]: Finished difference Result 245 states and 249 transitions. [2019-05-23 11:20:50,385 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-05-23 11:20:50,385 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 146 [2019-05-23 11:20:50,386 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:50,387 INFO L146 ILogger]: With dead ends: 245 [2019-05-23 11:20:50,387 INFO L146 ILogger]: Without dead ends: 198 [2019-05-23 11:20:50,388 INFO L146 ILogger]: 0 DeclaredPredicates, 167 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:20:50,389 INFO L146 ILogger]: Start minimizeSevpa. Operand 198 states. [2019-05-23 11:20:50,392 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 198 to 156. [2019-05-23 11:20:50,393 INFO L146 ILogger]: Start removeUnreachable. Operand 156 states. [2019-05-23 11:20:50,393 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 156 states to 156 states and 158 transitions. [2019-05-23 11:20:50,394 INFO L146 ILogger]: Start accepts. Automaton has 156 states and 158 transitions. Word has length 146 [2019-05-23 11:20:50,394 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:50,394 INFO L146 ILogger]: Abstraction has 156 states and 158 transitions. [2019-05-23 11:20:50,394 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:20:50,394 INFO L146 ILogger]: Start isEmpty. Operand 156 states and 158 transitions. [2019-05-23 11:20:50,396 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 152 [2019-05-23 11:20:50,396 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:50,397 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 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 11:20:50,397 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:50,397 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:50,397 INFO L146 ILogger]: Analyzing trace with hash 204180264, now seen corresponding path program 11 times [2019-05-23 11:20:50,397 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:50,398 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:50,398 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:50,399 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:50,399 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:50,419 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:50,764 INFO L146 ILogger]: Checked inductivity of 1035 backedges. 0 proven. 970 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-05-23 11:20:50,764 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:50,764 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 11:20:50,773 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:20:52,077 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2019-05-23 11:20:52,078 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:52,081 INFO L146 ILogger]: Trace formula consists of 235 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:20:52,082 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:52,171 INFO L146 ILogger]: Checked inductivity of 1035 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2019-05-23 11:20:52,191 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:52,191 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 8] total 26 [2019-05-23 11:20:52,191 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:20:52,192 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:20:52,192 INFO L146 ILogger]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:20:52,193 INFO L146 ILogger]: Start difference. First operand 156 states and 158 transitions. Second operand 26 states. [2019-05-23 11:20:52,607 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:52,607 INFO L146 ILogger]: Finished difference Result 314 states and 322 transitions. [2019-05-23 11:20:52,607 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-05-23 11:20:52,608 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 151 [2019-05-23 11:20:52,608 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:52,610 INFO L146 ILogger]: With dead ends: 314 [2019-05-23 11:20:52,610 INFO L146 ILogger]: Without dead ends: 267 [2019-05-23 11:20:52,611 INFO L146 ILogger]: 0 DeclaredPredicates, 173 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:20:52,612 INFO L146 ILogger]: Start minimizeSevpa. Operand 267 states. [2019-05-23 11:20:52,617 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 267 to 182. [2019-05-23 11:20:52,617 INFO L146 ILogger]: Start removeUnreachable. Operand 182 states. [2019-05-23 11:20:52,618 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 182 states to 182 states and 184 transitions. [2019-05-23 11:20:52,618 INFO L146 ILogger]: Start accepts. Automaton has 182 states and 184 transitions. Word has length 151 [2019-05-23 11:20:52,618 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:52,618 INFO L146 ILogger]: Abstraction has 182 states and 184 transitions. [2019-05-23 11:20:52,618 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:20:52,619 INFO L146 ILogger]: Start isEmpty. Operand 182 states and 184 transitions. [2019-05-23 11:20:52,620 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 178 [2019-05-23 11:20:52,620 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:52,621 INFO L146 ILogger]: trace histogram [24, 24, 24, 24, 24, 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 11:20:52,621 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:52,621 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:52,621 INFO L146 ILogger]: Analyzing trace with hash 2062943685, now seen corresponding path program 12 times [2019-05-23 11:20:52,622 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:52,622 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:52,622 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:52,623 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:52,623 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:52,644 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:53,104 INFO L146 ILogger]: Checked inductivity of 1500 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:20:53,104 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:53,104 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 11:20:53,113 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:20:53,661 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-05-23 11:20:53,661 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:53,663 INFO L146 ILogger]: Trace formula consists of 188 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:20:53,665 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:53,817 INFO L146 ILogger]: Checked inductivity of 1500 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2019-05-23 11:20:53,836 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:53,836 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 9] total 31 [2019-05-23 11:20:53,836 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:20:53,837 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:20:53,837 INFO L146 ILogger]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:20:53,838 INFO L146 ILogger]: Start difference. First operand 182 states and 184 transitions. Second operand 31 states. [2019-05-23 11:20:54,654 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:54,654 INFO L146 ILogger]: Finished difference Result 364 states and 373 transitions. [2019-05-23 11:20:54,654 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:20:54,655 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 177 [2019-05-23 11:20:54,655 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:54,658 INFO L146 ILogger]: With dead ends: 364 [2019-05-23 11:20:54,658 INFO L146 ILogger]: Without dead ends: 311 [2019-05-23 11:20:54,658 INFO L146 ILogger]: 0 DeclaredPredicates, 203 GetRequests, 174 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 11:20:54,659 INFO L146 ILogger]: Start minimizeSevpa. Operand 311 states. [2019-05-23 11:20:54,663 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 311 to 213. [2019-05-23 11:20:54,663 INFO L146 ILogger]: Start removeUnreachable. Operand 213 states. [2019-05-23 11:20:54,664 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 213 states to 213 states and 215 transitions. [2019-05-23 11:20:54,664 INFO L146 ILogger]: Start accepts. Automaton has 213 states and 215 transitions. Word has length 177 [2019-05-23 11:20:54,665 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:54,665 INFO L146 ILogger]: Abstraction has 213 states and 215 transitions. [2019-05-23 11:20:54,665 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:20:54,665 INFO L146 ILogger]: Start isEmpty. Operand 213 states and 215 transitions. [2019-05-23 11:20:54,667 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 209 [2019-05-23 11:20:54,667 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:54,667 INFO L146 ILogger]: trace histogram [29, 29, 29, 29, 29, 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 11:20:54,667 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:54,667 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:54,668 INFO L146 ILogger]: Analyzing trace with hash 1789917593, now seen corresponding path program 13 times [2019-05-23 11:20:54,668 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:54,668 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:54,669 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:54,669 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:54,669 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:54,691 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:55,219 INFO L146 ILogger]: Checked inductivity of 2192 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-05-23 11:20:55,219 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:55,219 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 11:20:55,229 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:55,283 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:55,284 INFO L146 ILogger]: Trace formula consists of 316 conjuncts, 31 conjunts are in the unsatisfiable core [2019-05-23 11:20:55,286 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:55,357 INFO L146 ILogger]: Checked inductivity of 2192 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-05-23 11:20:55,385 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:55,386 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2019-05-23 11:20:55,386 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:20:55,387 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:20:55,387 INFO L146 ILogger]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:20:55,387 INFO L146 ILogger]: Start difference. First operand 213 states and 215 transitions. Second operand 33 states. [2019-05-23 11:20:55,818 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:55,819 INFO L146 ILogger]: Finished difference Result 332 states and 336 transitions. [2019-05-23 11:20:55,819 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-05-23 11:20:55,819 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 208 [2019-05-23 11:20:55,820 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:55,821 INFO L146 ILogger]: With dead ends: 332 [2019-05-23 11:20:55,821 INFO L146 ILogger]: Without dead ends: 273 [2019-05-23 11:20:55,822 INFO L146 ILogger]: 0 DeclaredPredicates, 239 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:20:55,823 INFO L146 ILogger]: Start minimizeSevpa. Operand 273 states. [2019-05-23 11:20:55,827 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 273 to 218. [2019-05-23 11:20:55,828 INFO L146 ILogger]: Start removeUnreachable. Operand 218 states. [2019-05-23 11:20:55,828 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 218 states to 218 states and 220 transitions. [2019-05-23 11:20:55,829 INFO L146 ILogger]: Start accepts. Automaton has 218 states and 220 transitions. Word has length 208 [2019-05-23 11:20:55,829 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:55,829 INFO L146 ILogger]: Abstraction has 218 states and 220 transitions. [2019-05-23 11:20:55,829 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:20:55,829 INFO L146 ILogger]: Start isEmpty. Operand 218 states and 220 transitions. [2019-05-23 11:20:55,831 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 214 [2019-05-23 11:20:55,832 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:55,832 INFO L146 ILogger]: trace histogram [30, 30, 30, 30, 30, 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 11:20:55,832 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:55,832 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:55,833 INFO L146 ILogger]: Analyzing trace with hash -564582142, now seen corresponding path program 14 times [2019-05-23 11:20:55,833 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:55,833 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:55,834 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:55,834 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:55,834 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:55,854 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:57,678 INFO L146 ILogger]: Checked inductivity of 2338 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-05-23 11:20:57,678 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:57,679 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 11:20:57,687 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:57,737 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:57,738 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:57,739 INFO L146 ILogger]: Trace formula consists of 323 conjuncts, 32 conjunts are in the unsatisfiable core [2019-05-23 11:20:57,742 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:57,838 INFO L146 ILogger]: Checked inductivity of 2338 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-05-23 11:20:57,857 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:57,857 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2019-05-23 11:20:57,857 INFO L146 ILogger]: Interpolant automaton has 34 states [2019-05-23 11:20:57,858 INFO L146 ILogger]: Constructing interpolant automaton starting with 34 interpolants. [2019-05-23 11:20:57,858 INFO L146 ILogger]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2019-05-23 11:20:57,859 INFO L146 ILogger]: Start difference. First operand 218 states and 220 transitions. Second operand 34 states. [2019-05-23 11:20:58,190 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:58,190 INFO L146 ILogger]: Finished difference Result 337 states and 341 transitions. [2019-05-23 11:20:58,190 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-05-23 11:20:58,190 INFO L146 ILogger]: Start accepts. Automaton has 34 states. Word has length 213 [2019-05-23 11:20:58,191 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:58,193 INFO L146 ILogger]: With dead ends: 337 [2019-05-23 11:20:58,193 INFO L146 ILogger]: Without dead ends: 278 [2019-05-23 11:20:58,194 INFO L146 ILogger]: 0 DeclaredPredicates, 245 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2019-05-23 11:20:58,195 INFO L146 ILogger]: Start minimizeSevpa. Operand 278 states. [2019-05-23 11:20:58,199 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 278 to 223. [2019-05-23 11:20:58,199 INFO L146 ILogger]: Start removeUnreachable. Operand 223 states. [2019-05-23 11:20:58,200 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 223 states to 223 states and 225 transitions. [2019-05-23 11:20:58,200 INFO L146 ILogger]: Start accepts. Automaton has 223 states and 225 transitions. Word has length 213 [2019-05-23 11:20:58,200 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:58,200 INFO L146 ILogger]: Abstraction has 223 states and 225 transitions. [2019-05-23 11:20:58,201 INFO L146 ILogger]: Interpolant automaton has 34 states. [2019-05-23 11:20:58,201 INFO L146 ILogger]: Start isEmpty. Operand 223 states and 225 transitions. [2019-05-23 11:20:58,202 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 219 [2019-05-23 11:20:58,202 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:58,202 INFO L146 ILogger]: trace histogram [31, 31, 31, 31, 31, 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 11:20:58,202 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:58,203 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:58,203 INFO L146 ILogger]: Analyzing trace with hash 859976505, now seen corresponding path program 15 times [2019-05-23 11:20:58,203 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:58,203 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:58,204 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:58,204 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:58,204 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:58,227 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:59,073 INFO L146 ILogger]: Checked inductivity of 2489 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-05-23 11:20:59,074 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:59,074 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 11:20:59,082 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:59,273 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2019-05-23 11:20:59,273 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:59,274 INFO L146 ILogger]: Trace formula consists of 162 conjuncts, 9 conjunts are in the unsatisfiable core [2019-05-23 11:20:59,278 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:59,607 INFO L146 ILogger]: Checked inductivity of 2489 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 2356 trivial. 0 not checked. [2019-05-23 11:20:59,626 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:59,626 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 10] total 38 [2019-05-23 11:20:59,627 INFO L146 ILogger]: Interpolant automaton has 38 states [2019-05-23 11:20:59,627 INFO L146 ILogger]: Constructing interpolant automaton starting with 38 interpolants. [2019-05-23 11:20:59,628 INFO L146 ILogger]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2019-05-23 11:20:59,628 INFO L146 ILogger]: Start difference. First operand 223 states and 225 transitions. Second operand 38 states. [2019-05-23 11:21:01,466 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:01,467 INFO L146 ILogger]: Finished difference Result 424 states and 433 transitions. [2019-05-23 11:21:01,467 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-05-23 11:21:01,467 INFO L146 ILogger]: Start accepts. Automaton has 38 states. Word has length 218 [2019-05-23 11:21:01,468 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:01,470 INFO L146 ILogger]: With dead ends: 424 [2019-05-23 11:21:01,471 INFO L146 ILogger]: Without dead ends: 365 [2019-05-23 11:21:01,472 INFO L146 ILogger]: 0 DeclaredPredicates, 251 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2019-05-23 11:21:01,473 INFO L146 ILogger]: Start minimizeSevpa. Operand 365 states. [2019-05-23 11:21:01,482 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 365 to 254. [2019-05-23 11:21:01,483 INFO L146 ILogger]: Start removeUnreachable. Operand 254 states. [2019-05-23 11:21:01,484 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 254 states to 254 states and 256 transitions. [2019-05-23 11:21:01,484 INFO L146 ILogger]: Start accepts. Automaton has 254 states and 256 transitions. Word has length 218 [2019-05-23 11:21:01,485 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:01,485 INFO L146 ILogger]: Abstraction has 254 states and 256 transitions. [2019-05-23 11:21:01,485 INFO L146 ILogger]: Interpolant automaton has 38 states. [2019-05-23 11:21:01,486 INFO L146 ILogger]: Start isEmpty. Operand 254 states and 256 transitions. [2019-05-23 11:21:01,488 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 250 [2019-05-23 11:21:01,488 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:01,488 INFO L146 ILogger]: trace histogram [36, 36, 36, 36, 36, 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 11:21:01,489 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:01,489 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:01,489 INFO L146 ILogger]: Analyzing trace with hash 1170283135, now seen corresponding path program 16 times [2019-05-23 11:21:01,489 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:01,490 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:01,491 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:01,491 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:01,491 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:01,530 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:02,664 INFO L146 ILogger]: Checked inductivity of 3362 backedges. 0 proven. 3186 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-05-23 11:21:02,665 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:02,665 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:21:02,674 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:21:04,783 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:21:04,784 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:04,788 INFO L146 ILogger]: Trace formula consists of 374 conjuncts, 38 conjunts are in the unsatisfiable core [2019-05-23 11:21:04,791 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:04,880 INFO L146 ILogger]: Checked inductivity of 3362 backedges. 0 proven. 3186 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-05-23 11:21:04,901 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:04,902 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2019-05-23 11:21:04,902 INFO L146 ILogger]: Interpolant automaton has 40 states [2019-05-23 11:21:04,902 INFO L146 ILogger]: Constructing interpolant automaton starting with 40 interpolants. [2019-05-23 11:21:04,903 INFO L146 ILogger]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:21:04,903 INFO L146 ILogger]: Start difference. First operand 254 states and 256 transitions. Second operand 40 states. [2019-05-23 11:21:05,320 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:05,321 INFO L146 ILogger]: Finished difference Result 379 states and 383 transitions. [2019-05-23 11:21:05,321 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:21:05,321 INFO L146 ILogger]: Start accepts. Automaton has 40 states. Word has length 249 [2019-05-23 11:21:05,322 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:05,323 INFO L146 ILogger]: With dead ends: 379 [2019-05-23 11:21:05,323 INFO L146 ILogger]: Without dead ends: 314 [2019-05-23 11:21:05,324 INFO L146 ILogger]: 0 DeclaredPredicates, 287 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:21:05,325 INFO L146 ILogger]: Start minimizeSevpa. Operand 314 states. [2019-05-23 11:21:05,330 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 314 to 259. [2019-05-23 11:21:05,330 INFO L146 ILogger]: Start removeUnreachable. Operand 259 states. [2019-05-23 11:21:05,331 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 259 states to 259 states and 261 transitions. [2019-05-23 11:21:05,331 INFO L146 ILogger]: Start accepts. Automaton has 259 states and 261 transitions. Word has length 249 [2019-05-23 11:21:05,332 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:05,332 INFO L146 ILogger]: Abstraction has 259 states and 261 transitions. [2019-05-23 11:21:05,332 INFO L146 ILogger]: Interpolant automaton has 40 states. [2019-05-23 11:21:05,332 INFO L146 ILogger]: Start isEmpty. Operand 259 states and 261 transitions. [2019-05-23 11:21:05,333 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 255 [2019-05-23 11:21:05,333 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:05,334 INFO L146 ILogger]: trace histogram [37, 37, 37, 37, 37, 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 11:21:05,334 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:05,334 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:05,334 INFO L146 ILogger]: Analyzing trace with hash -511994570, now seen corresponding path program 17 times [2019-05-23 11:21:05,335 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:05,335 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:05,335 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:05,336 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:05,336 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:05,361 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:06,592 INFO L146 ILogger]: Checked inductivity of 3543 backedges. 0 proven. 3367 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-05-23 11:21:06,593 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:06,593 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:21:06,601 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:21:47,810 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 38 check-sat command(s) [2019-05-23 11:21:47,810 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:47,830 INFO L146 ILogger]: Trace formula consists of 381 conjuncts, 39 conjunts are in the unsatisfiable core [2019-05-23 11:21:47,834 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:47,939 INFO L146 ILogger]: Checked inductivity of 3543 backedges. 0 proven. 3367 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-05-23 11:21:47,963 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:47,963 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2019-05-23 11:21:47,964 INFO L146 ILogger]: Interpolant automaton has 41 states [2019-05-23 11:21:47,964 INFO L146 ILogger]: Constructing interpolant automaton starting with 41 interpolants. [2019-05-23 11:21:47,964 INFO L146 ILogger]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:21:47,965 INFO L146 ILogger]: Start difference. First operand 259 states and 261 transitions. Second operand 41 states. [2019-05-23 11:21:48,389 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:48,389 INFO L146 ILogger]: Finished difference Result 397 states and 401 transitions. [2019-05-23 11:21:48,389 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-05-23 11:21:48,389 INFO L146 ILogger]: Start accepts. Automaton has 41 states. Word has length 254 [2019-05-23 11:21:48,390 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:48,392 INFO L146 ILogger]: With dead ends: 397 [2019-05-23 11:21:48,392 INFO L146 ILogger]: Without dead ends: 332 [2019-05-23 11:21:48,394 INFO L146 ILogger]: 0 DeclaredPredicates, 293 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:21:48,394 INFO L146 ILogger]: Start minimizeSevpa. Operand 332 states. [2019-05-23 11:21:48,398 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 332 to 264. [2019-05-23 11:21:48,398 INFO L146 ILogger]: Start removeUnreachable. Operand 264 states. [2019-05-23 11:21:48,399 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 264 states to 264 states and 266 transitions. [2019-05-23 11:21:48,399 INFO L146 ILogger]: Start accepts. Automaton has 264 states and 266 transitions. Word has length 254 [2019-05-23 11:21:48,400 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:48,400 INFO L146 ILogger]: Abstraction has 264 states and 266 transitions. [2019-05-23 11:21:48,400 INFO L146 ILogger]: Interpolant automaton has 41 states. [2019-05-23 11:21:48,400 INFO L146 ILogger]: Start isEmpty. Operand 264 states and 266 transitions. [2019-05-23 11:21:48,401 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 260 [2019-05-23 11:21:48,401 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:48,402 INFO L146 ILogger]: trace histogram [38, 38, 38, 38, 38, 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 11:21:48,402 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:48,402 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:48,402 INFO L146 ILogger]: Analyzing trace with hash -242993953, now seen corresponding path program 18 times [2019-05-23 11:21:48,402 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:48,402 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:48,403 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:48,403 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:48,403 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:48,427 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:49,166 INFO L146 ILogger]: Checked inductivity of 3729 backedges. 0 proven. 3553 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-05-23 11:21:49,166 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:49,166 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 11:21:49,175 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE