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_init2_true-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:17:59,268 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:17:59,270 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:17:59,282 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:17:59,282 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:17:59,284 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:17:59,285 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:17:59,287 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:17:59,289 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:17:59,290 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:17:59,291 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:17:59,292 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:17:59,293 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:17:59,294 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:17:59,295 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:17:59,296 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:17:59,297 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:17:59,299 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:17:59,301 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:17:59,303 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:17:59,305 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:17:59,306 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:17:59,309 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:17:59,309 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:17:59,310 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:17:59,311 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:17:59,311 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:17:59,313 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:17:59,313 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:17:59,314 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:17:59,315 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:17:59,316 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:17:59,317 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:17:59,318 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:17:59,319 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:17:59,319 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:17:59,319 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:17:59,320 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:17:59,321 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:17:59,321 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:17:59,345 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:17:59,346 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:17:59,348 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:17:59,348 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:17:59,348 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:17:59,349 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:17:59,349 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:17:59,349 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:17:59,350 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:17:59,350 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:17:59,350 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:17:59,350 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:17:59,350 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:17:59,351 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:17:59,351 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:17:59,351 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:17:59,351 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:17:59,351 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:17:59,352 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:17:59,352 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:17:59,353 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:17:59,353 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:17:59,353 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:17:59,353 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:17:59,353 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:17:59,354 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:17:59,354 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:17:59,354 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:17:59,354 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 11:17:59,413 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:17:59,427 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:17:59,434 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:17:59,435 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:17:59,436 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:17:59,437 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_init2_true-unreach-call_ground.i [2019-05-23 11:17:59,501 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abd009118/717cb902ce7c4c8d85b909b402f3c1d1/FLAG79f9190cc [2019-05-23 11:17:59,944 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:17:59,945 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_init2_true-unreach-call_ground.i [2019-05-23 11:17:59,955 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abd009118/717cb902ce7c4c8d85b909b402f3c1d1/FLAG79f9190cc [2019-05-23 11:18:00,291 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abd009118/717cb902ce7c4c8d85b909b402f3c1d1 [2019-05-23 11:18:00,302 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:18:00,304 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:18:00,306 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:18:00,306 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:18:00,313 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:18:00,315 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:18:00" (1/1) ... [2019-05-23 11:18:00,322 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22b7c04c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:18:00, skipping insertion in model container [2019-05-23 11:18:00,322 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:18:00" (1/1) ... [2019-05-23 11:18:00,330 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:18:00,351 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:18:00,520 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:18:00,525 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:18:00,552 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:18:00,585 INFO L146 ILogger]: Completed translation [2019-05-23 11:18:00,586 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:18:00 WrapperNode [2019-05-23 11:18:00,586 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:18:00,587 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:18:00,587 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:18:00,588 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:18:00,598 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:18:00" (1/1) ... [2019-05-23 11:18:00,613 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:18:00" (1/1) ... [2019-05-23 11:18:00,638 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:18:00,638 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:18:00,638 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:18:00,638 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:18:00,648 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:18:00" (1/1) ... [2019-05-23 11:18:00,649 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:18:00" (1/1) ... [2019-05-23 11:18:00,650 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:18:00" (1/1) ... [2019-05-23 11:18:00,650 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:18:00" (1/1) ... [2019-05-23 11:18:00,657 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:18:00" (1/1) ... [2019-05-23 11:18:00,664 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:18:00" (1/1) ... [2019-05-23 11:18:00,666 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:18:00" (1/1) ... [2019-05-23 11:18:00,672 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:18:00,672 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:18:00,672 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:18:00,672 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:18:00,680 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:18:00" (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 11:18:00,830 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:18:00,831 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:18:00,831 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:18:00,831 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:18:00,831 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:18:00,831 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:18:01,189 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:18:01,189 INFO L146 ILogger]: Removed 9 assume(true) statements. [2019-05-23 11:18:01,192 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:18:01 BoogieIcfgContainer [2019-05-23 11:18:01,192 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:18:01,193 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:18:01,193 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:18:01,196 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:18:01,196 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:18:00" (1/3) ... [2019-05-23 11:18:01,197 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d4ea4cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:18:01, skipping insertion in model container [2019-05-23 11:18:01,197 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:18:00" (2/3) ... [2019-05-23 11:18:01,198 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d4ea4cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:18:01, skipping insertion in model container [2019-05-23 11:18:01,198 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:18:01" (3/3) ... [2019-05-23 11:18:01,200 INFO L146 ILogger]: Analyzing ICFG standard_init2_true-unreach-call_ground.i [2019-05-23 11:18:01,210 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:18:01,218 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:18:01,234 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:18:01,261 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:18:01,261 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:18:01,261 INFO L146 ILogger]: Hoare is true [2019-05-23 11:18:01,262 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:18:01,262 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:18:01,262 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:18:01,262 INFO L146 ILogger]: Difference is false [2019-05-23 11:18:01,262 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:18:01,262 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:18:01,276 INFO L146 ILogger]: Start isEmpty. Operand 33 states. [2019-05-23 11:18:01,282 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 19 [2019-05-23 11:18:01,283 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:01,284 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:01,286 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:01,292 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:01,292 INFO L146 ILogger]: Analyzing trace with hash -530522156, now seen corresponding path program 1 times [2019-05-23 11:18:01,294 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:01,294 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:01,334 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:01,334 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:18:01,334 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:01,371 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:01,404 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 11:18:01,406 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:18:01,406 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:18:01,409 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:18:01,418 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:18:01,419 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:18:01,421 INFO L146 ILogger]: Start difference. First operand 33 states. Second operand 2 states. [2019-05-23 11:18:01,439 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:01,440 INFO L146 ILogger]: Finished difference Result 57 states and 67 transitions. [2019-05-23 11:18:01,440 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:18:01,441 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 18 [2019-05-23 11:18:01,441 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:01,450 INFO L146 ILogger]: With dead ends: 57 [2019-05-23 11:18:01,450 INFO L146 ILogger]: Without dead ends: 27 [2019-05-23 11:18:01,453 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 11:18:01,468 INFO L146 ILogger]: Start minimizeSevpa. Operand 27 states. [2019-05-23 11:18:01,482 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-05-23 11:18:01,483 INFO L146 ILogger]: Start removeUnreachable. Operand 27 states. [2019-05-23 11:18:01,484 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2019-05-23 11:18:01,486 INFO L146 ILogger]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 18 [2019-05-23 11:18:01,487 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:01,487 INFO L146 ILogger]: Abstraction has 27 states and 29 transitions. [2019-05-23 11:18:01,487 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:18:01,487 INFO L146 ILogger]: Start isEmpty. Operand 27 states and 29 transitions. [2019-05-23 11:18:01,488 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 19 [2019-05-23 11:18:01,488 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:01,488 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:01,489 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:01,489 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:01,489 INFO L146 ILogger]: Analyzing trace with hash -125937440, now seen corresponding path program 1 times [2019-05-23 11:18:01,489 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:01,490 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:01,491 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:01,491 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:18:01,491 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:01,506 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:01,543 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 11:18:01,544 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:18:01,544 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:18:01,545 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:18:01,546 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:18:01,547 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:18:01,547 INFO L146 ILogger]: Start difference. First operand 27 states and 29 transitions. Second operand 3 states. [2019-05-23 11:18:01,631 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:01,631 INFO L146 ILogger]: Finished difference Result 51 states and 56 transitions. [2019-05-23 11:18:01,632 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:18:01,632 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 18 [2019-05-23 11:18:01,632 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:01,633 INFO L146 ILogger]: With dead ends: 51 [2019-05-23 11:18:01,633 INFO L146 ILogger]: Without dead ends: 33 [2019-05-23 11:18:01,635 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 11:18:01,635 INFO L146 ILogger]: Start minimizeSevpa. Operand 33 states. [2019-05-23 11:18:01,639 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 33 to 29. [2019-05-23 11:18:01,639 INFO L146 ILogger]: Start removeUnreachable. Operand 29 states. [2019-05-23 11:18:01,640 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2019-05-23 11:18:01,640 INFO L146 ILogger]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 18 [2019-05-23 11:18:01,641 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:01,641 INFO L146 ILogger]: Abstraction has 29 states and 31 transitions. [2019-05-23 11:18:01,641 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:18:01,641 INFO L146 ILogger]: Start isEmpty. Operand 29 states and 31 transitions. [2019-05-23 11:18:01,642 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 25 [2019-05-23 11:18:01,642 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:01,642 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] [2019-05-23 11:18:01,643 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:01,643 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:01,643 INFO L146 ILogger]: Analyzing trace with hash 1056572159, now seen corresponding path program 1 times [2019-05-23 11:18:01,643 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:01,643 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:01,644 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:01,645 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:18:01,645 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:01,664 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:01,735 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 11:18:01,736 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:01,736 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 11:18:01,752 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:18:01,791 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:01,796 INFO L146 ILogger]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:18:01,802 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:01,842 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 11:18:01,862 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:01,862 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-05-23 11:18:01,863 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:18:01,863 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:18:01,864 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:18:01,864 INFO L146 ILogger]: Start difference. First operand 29 states and 31 transitions. Second operand 5 states. [2019-05-23 11:18:02,167 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:02,168 INFO L146 ILogger]: Finished difference Result 58 states and 63 transitions. [2019-05-23 11:18:02,168 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:18:02,169 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 24 [2019-05-23 11:18:02,169 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:02,170 INFO L146 ILogger]: With dead ends: 58 [2019-05-23 11:18:02,170 INFO L146 ILogger]: Without dead ends: 39 [2019-05-23 11:18:02,171 INFO L146 ILogger]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:18:02,171 INFO L146 ILogger]: Start minimizeSevpa. Operand 39 states. [2019-05-23 11:18:02,175 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 39 to 35. [2019-05-23 11:18:02,175 INFO L146 ILogger]: Start removeUnreachable. Operand 35 states. [2019-05-23 11:18:02,176 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2019-05-23 11:18:02,177 INFO L146 ILogger]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 24 [2019-05-23 11:18:02,177 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:02,177 INFO L146 ILogger]: Abstraction has 35 states and 37 transitions. [2019-05-23 11:18:02,177 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:18:02,177 INFO L146 ILogger]: Start isEmpty. Operand 35 states and 37 transitions. [2019-05-23 11:18:02,178 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 31 [2019-05-23 11:18:02,178 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:02,179 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:02,179 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:02,179 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:02,179 INFO L146 ILogger]: Analyzing trace with hash 617457280, now seen corresponding path program 2 times [2019-05-23 11:18:02,180 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:02,180 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:02,181 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:02,181 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:18:02,181 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:02,199 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:02,288 INFO L146 ILogger]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-05-23 11:18:02,288 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:02,288 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 11:18:02,303 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:18:02,352 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:18:02,352 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:02,353 INFO L146 ILogger]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:18:02,356 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:02,413 INFO L146 ILogger]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-05-23 11:18:02,433 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:02,433 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-05-23 11:18:02,434 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:18:02,434 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:18:02,434 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:18:02,434 INFO L146 ILogger]: Start difference. First operand 35 states and 37 transitions. Second operand 6 states. [2019-05-23 11:18:02,537 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:02,538 INFO L146 ILogger]: Finished difference Result 67 states and 72 transitions. [2019-05-23 11:18:02,538 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:18:02,538 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 30 [2019-05-23 11:18:02,538 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:02,539 INFO L146 ILogger]: With dead ends: 67 [2019-05-23 11:18:02,539 INFO L146 ILogger]: Without dead ends: 45 [2019-05-23 11:18:02,540 INFO L146 ILogger]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:18:02,541 INFO L146 ILogger]: Start minimizeSevpa. Operand 45 states. [2019-05-23 11:18:02,545 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 45 to 41. [2019-05-23 11:18:02,545 INFO L146 ILogger]: Start removeUnreachable. Operand 41 states. [2019-05-23 11:18:02,546 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2019-05-23 11:18:02,547 INFO L146 ILogger]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 30 [2019-05-23 11:18:02,547 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:02,547 INFO L146 ILogger]: Abstraction has 41 states and 43 transitions. [2019-05-23 11:18:02,547 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:18:02,548 INFO L146 ILogger]: Start isEmpty. Operand 41 states and 43 transitions. [2019-05-23 11:18:02,549 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 37 [2019-05-23 11:18:02,549 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:02,549 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:02,549 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:02,550 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:02,550 INFO L146 ILogger]: Analyzing trace with hash 1641463135, now seen corresponding path program 3 times [2019-05-23 11:18:02,550 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:02,550 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:02,551 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:02,551 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:02,552 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:02,571 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:02,698 INFO L146 ILogger]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-05-23 11:18:02,698 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:02,698 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 11:18:02,718 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:18:02,765 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:18:02,766 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:02,767 INFO L146 ILogger]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:18:02,771 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:02,792 INFO L146 ILogger]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-05-23 11:18:02,816 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:02,816 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-05-23 11:18:02,817 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:18:02,817 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:18:02,817 INFO L146 ILogger]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:18:02,818 INFO L146 ILogger]: Start difference. First operand 41 states and 43 transitions. Second operand 7 states. [2019-05-23 11:18:02,942 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:02,942 INFO L146 ILogger]: Finished difference Result 76 states and 81 transitions. [2019-05-23 11:18:02,943 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:18:02,943 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 36 [2019-05-23 11:18:02,943 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:02,944 INFO L146 ILogger]: With dead ends: 76 [2019-05-23 11:18:02,944 INFO L146 ILogger]: Without dead ends: 51 [2019-05-23 11:18:02,945 INFO L146 ILogger]: 0 DeclaredPredicates, 41 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:18:02,945 INFO L146 ILogger]: Start minimizeSevpa. Operand 51 states. [2019-05-23 11:18:02,949 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 51 to 47. [2019-05-23 11:18:02,949 INFO L146 ILogger]: Start removeUnreachable. Operand 47 states. [2019-05-23 11:18:02,950 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2019-05-23 11:18:02,950 INFO L146 ILogger]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 36 [2019-05-23 11:18:02,950 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:02,951 INFO L146 ILogger]: Abstraction has 47 states and 49 transitions. [2019-05-23 11:18:02,951 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:18:02,951 INFO L146 ILogger]: Start isEmpty. Operand 47 states and 49 transitions. [2019-05-23 11:18:02,952 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 43 [2019-05-23 11:18:02,952 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:02,952 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:02,952 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:02,953 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:02,953 INFO L146 ILogger]: Analyzing trace with hash -1024738272, now seen corresponding path program 4 times [2019-05-23 11:18:02,953 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:02,953 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:02,955 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:02,955 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:02,955 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:02,977 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:03,110 INFO L146 ILogger]: Checked inductivity of 44 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-05-23 11:18:03,111 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:03,111 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 11:18:03,130 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:18:03,172 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:18:03,172 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:03,173 INFO L146 ILogger]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:18:03,175 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:03,194 INFO L146 ILogger]: Checked inductivity of 44 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-05-23 11:18:03,214 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:03,214 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-05-23 11:18:03,215 INFO L146 ILogger]: Interpolant automaton has 8 states [2019-05-23 11:18:03,215 INFO L146 ILogger]: Constructing interpolant automaton starting with 8 interpolants. [2019-05-23 11:18:03,216 INFO L146 ILogger]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:18:03,216 INFO L146 ILogger]: Start difference. First operand 47 states and 49 transitions. Second operand 8 states. [2019-05-23 11:18:03,580 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:03,580 INFO L146 ILogger]: Finished difference Result 85 states and 90 transitions. [2019-05-23 11:18:03,582 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:18:03,582 INFO L146 ILogger]: Start accepts. Automaton has 8 states. Word has length 42 [2019-05-23 11:18:03,582 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:03,583 INFO L146 ILogger]: With dead ends: 85 [2019-05-23 11:18:03,583 INFO L146 ILogger]: Without dead ends: 57 [2019-05-23 11:18:03,584 INFO L146 ILogger]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:18:03,585 INFO L146 ILogger]: Start minimizeSevpa. Operand 57 states. [2019-05-23 11:18:03,589 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 57 to 53. [2019-05-23 11:18:03,589 INFO L146 ILogger]: Start removeUnreachable. Operand 53 states. [2019-05-23 11:18:03,590 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2019-05-23 11:18:03,590 INFO L146 ILogger]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 42 [2019-05-23 11:18:03,590 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:03,590 INFO L146 ILogger]: Abstraction has 53 states and 55 transitions. [2019-05-23 11:18:03,590 INFO L146 ILogger]: Interpolant automaton has 8 states. [2019-05-23 11:18:03,590 INFO L146 ILogger]: Start isEmpty. Operand 53 states and 55 transitions. [2019-05-23 11:18:03,592 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 49 [2019-05-23 11:18:03,593 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:03,593 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:03,593 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:03,593 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:03,594 INFO L146 ILogger]: Analyzing trace with hash 1724755903, now seen corresponding path program 5 times [2019-05-23 11:18:03,594 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:03,594 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:03,595 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:03,595 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:03,595 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:03,627 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:03,793 INFO L146 ILogger]: Checked inductivity of 70 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-05-23 11:18:03,793 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:03,793 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 11:18:03,802 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:18:03,834 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-05-23 11:18:03,834 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:03,837 INFO L146 ILogger]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:18:03,839 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:03,884 INFO L146 ILogger]: Checked inductivity of 70 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-05-23 11:18:03,903 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:03,904 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2019-05-23 11:18:03,904 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:18:03,904 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:18:03,905 INFO L146 ILogger]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:18:03,905 INFO L146 ILogger]: Start difference. First operand 53 states and 55 transitions. Second operand 9 states. [2019-05-23 11:18:04,265 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:04,265 INFO L146 ILogger]: Finished difference Result 94 states and 99 transitions. [2019-05-23 11:18:04,269 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:18:04,269 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 48 [2019-05-23 11:18:04,269 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:04,270 INFO L146 ILogger]: With dead ends: 94 [2019-05-23 11:18:04,270 INFO L146 ILogger]: Without dead ends: 63 [2019-05-23 11:18:04,271 INFO L146 ILogger]: 0 DeclaredPredicates, 55 GetRequests, 48 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 11:18:04,271 INFO L146 ILogger]: Start minimizeSevpa. Operand 63 states. [2019-05-23 11:18:04,275 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 63 to 59. [2019-05-23 11:18:04,275 INFO L146 ILogger]: Start removeUnreachable. Operand 59 states. [2019-05-23 11:18:04,276 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2019-05-23 11:18:04,276 INFO L146 ILogger]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 48 [2019-05-23 11:18:04,277 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:04,277 INFO L146 ILogger]: Abstraction has 59 states and 61 transitions. [2019-05-23 11:18:04,277 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:18:04,277 INFO L146 ILogger]: Start isEmpty. Operand 59 states and 61 transitions. [2019-05-23 11:18:04,279 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 55 [2019-05-23 11:18:04,279 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:04,279 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:04,279 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:04,279 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:04,280 INFO L146 ILogger]: Analyzing trace with hash -681403968, now seen corresponding path program 6 times [2019-05-23 11:18:04,280 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:04,280 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:04,281 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:04,281 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:04,281 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:04,299 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:04,607 INFO L146 ILogger]: Checked inductivity of 102 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-05-23 11:18:04,607 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:04,608 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 11:18:04,617 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:18:04,686 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-05-23 11:18:04,686 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:04,687 INFO L146 ILogger]: Trace formula consists of 85 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:18:04,689 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:04,705 INFO L146 ILogger]: Checked inductivity of 102 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-05-23 11:18:04,726 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:04,726 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2019-05-23 11:18:04,727 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:18:04,727 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:18:04,727 INFO L146 ILogger]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:18:04,727 INFO L146 ILogger]: Start difference. First operand 59 states and 61 transitions. Second operand 10 states. [2019-05-23 11:18:04,918 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:04,918 INFO L146 ILogger]: Finished difference Result 103 states and 108 transitions. [2019-05-23 11:18:04,919 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-05-23 11:18:04,919 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 54 [2019-05-23 11:18:04,919 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:04,920 INFO L146 ILogger]: With dead ends: 103 [2019-05-23 11:18:04,920 INFO L146 ILogger]: Without dead ends: 69 [2019-05-23 11:18:04,921 INFO L146 ILogger]: 0 DeclaredPredicates, 62 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:18:04,921 INFO L146 ILogger]: Start minimizeSevpa. Operand 69 states. [2019-05-23 11:18:04,925 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 69 to 65. [2019-05-23 11:18:04,926 INFO L146 ILogger]: Start removeUnreachable. Operand 65 states. [2019-05-23 11:18:04,927 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2019-05-23 11:18:04,927 INFO L146 ILogger]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 54 [2019-05-23 11:18:04,927 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:04,927 INFO L146 ILogger]: Abstraction has 65 states and 67 transitions. [2019-05-23 11:18:04,928 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:18:04,929 INFO L146 ILogger]: Start isEmpty. Operand 65 states and 67 transitions. [2019-05-23 11:18:04,929 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 61 [2019-05-23 11:18:04,930 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:04,930 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:04,930 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:04,930 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:04,930 INFO L146 ILogger]: Analyzing trace with hash -669722081, now seen corresponding path program 7 times [2019-05-23 11:18:04,931 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:04,931 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:04,932 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:04,932 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:04,932 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:04,950 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:05,119 INFO L146 ILogger]: Checked inductivity of 140 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-05-23 11:18:05,119 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:05,119 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 11:18:05,140 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:18:05,177 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:05,179 INFO L146 ILogger]: Trace formula consists of 93 conjuncts, 9 conjunts are in the unsatisfiable core [2019-05-23 11:18:05,183 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:05,302 INFO L146 ILogger]: Checked inductivity of 140 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-05-23 11:18:05,346 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:05,346 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2019-05-23 11:18:05,346 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:18:05,348 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:18:05,348 INFO L146 ILogger]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:18:05,349 INFO L146 ILogger]: Start difference. First operand 65 states and 67 transitions. Second operand 11 states. [2019-05-23 11:18:05,623 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:05,624 INFO L146 ILogger]: Finished difference Result 112 states and 117 transitions. [2019-05-23 11:18:05,624 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-05-23 11:18:05,624 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 60 [2019-05-23 11:18:05,625 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:05,626 INFO L146 ILogger]: With dead ends: 112 [2019-05-23 11:18:05,626 INFO L146 ILogger]: Without dead ends: 75 [2019-05-23 11:18:05,627 INFO L146 ILogger]: 0 DeclaredPredicates, 69 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:18:05,627 INFO L146 ILogger]: Start minimizeSevpa. Operand 75 states. [2019-05-23 11:18:05,631 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 75 to 71. [2019-05-23 11:18:05,632 INFO L146 ILogger]: Start removeUnreachable. Operand 71 states. [2019-05-23 11:18:05,632 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2019-05-23 11:18:05,633 INFO L146 ILogger]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 60 [2019-05-23 11:18:05,633 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:05,633 INFO L146 ILogger]: Abstraction has 71 states and 73 transitions. [2019-05-23 11:18:05,633 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:18:05,633 INFO L146 ILogger]: Start isEmpty. Operand 71 states and 73 transitions. [2019-05-23 11:18:05,634 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 67 [2019-05-23 11:18:05,634 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:05,635 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:05,635 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:05,635 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:05,635 INFO L146 ILogger]: Analyzing trace with hash 926695264, now seen corresponding path program 8 times [2019-05-23 11:18:05,635 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:05,636 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:05,636 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:05,636 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:18:05,637 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:05,654 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:05,771 INFO L146 ILogger]: Checked inductivity of 184 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-05-23 11:18:05,772 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:05,772 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 11:18:05,782 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:18:05,802 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:18:05,803 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:05,803 INFO L146 ILogger]: Trace formula consists of 101 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:18:05,806 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:05,841 INFO L146 ILogger]: Checked inductivity of 184 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-05-23 11:18:05,870 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:05,870 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-05-23 11:18:05,871 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:18:05,871 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:18:05,872 INFO L146 ILogger]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:18:05,872 INFO L146 ILogger]: Start difference. First operand 71 states and 73 transitions. Second operand 12 states. [2019-05-23 11:18:06,031 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:06,032 INFO L146 ILogger]: Finished difference Result 121 states and 126 transitions. [2019-05-23 11:18:06,032 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 11:18:06,032 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 66 [2019-05-23 11:18:06,033 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:06,034 INFO L146 ILogger]: With dead ends: 121 [2019-05-23 11:18:06,034 INFO L146 ILogger]: Without dead ends: 81 [2019-05-23 11:18:06,035 INFO L146 ILogger]: 0 DeclaredPredicates, 76 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:18:06,036 INFO L146 ILogger]: Start minimizeSevpa. Operand 81 states. [2019-05-23 11:18:06,040 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 81 to 77. [2019-05-23 11:18:06,040 INFO L146 ILogger]: Start removeUnreachable. Operand 77 states. [2019-05-23 11:18:06,042 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2019-05-23 11:18:06,042 INFO L146 ILogger]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 66 [2019-05-23 11:18:06,042 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:06,042 INFO L146 ILogger]: Abstraction has 77 states and 79 transitions. [2019-05-23 11:18:06,043 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:18:06,043 INFO L146 ILogger]: Start isEmpty. Operand 77 states and 79 transitions. [2019-05-23 11:18:06,044 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 73 [2019-05-23 11:18:06,044 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:06,044 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:06,044 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:06,044 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:06,045 INFO L146 ILogger]: Analyzing trace with hash 526531711, now seen corresponding path program 9 times [2019-05-23 11:18:06,045 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:06,045 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:06,046 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:06,046 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:06,046 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:06,062 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:06,200 INFO L146 ILogger]: Checked inductivity of 234 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2019-05-23 11:18:06,201 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:06,201 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 11:18:06,214 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:18:06,349 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-05-23 11:18:06,350 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:06,351 INFO L146 ILogger]: Trace formula consists of 109 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:18:06,353 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:06,435 INFO L146 ILogger]: Checked inductivity of 234 backedges. 25 proven. 117 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-05-23 11:18:06,453 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:06,454 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 15 [2019-05-23 11:18:06,454 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:18:06,454 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:18:06,455 INFO L146 ILogger]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:18:06,455 INFO L146 ILogger]: Start difference. First operand 77 states and 79 transitions. Second operand 15 states. [2019-05-23 11:18:06,611 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:06,612 INFO L146 ILogger]: Finished difference Result 132 states and 139 transitions. [2019-05-23 11:18:06,619 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-05-23 11:18:06,619 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 72 [2019-05-23 11:18:06,619 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:06,620 INFO L146 ILogger]: With dead ends: 132 [2019-05-23 11:18:06,620 INFO L146 ILogger]: Without dead ends: 89 [2019-05-23 11:18:06,621 INFO L146 ILogger]: 0 DeclaredPredicates, 83 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:18:06,621 INFO L146 ILogger]: Start minimizeSevpa. Operand 89 states. [2019-05-23 11:18:06,626 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 89 to 89. [2019-05-23 11:18:06,627 INFO L146 ILogger]: Start removeUnreachable. Operand 89 states. [2019-05-23 11:18:06,627 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 89 states to 89 states and 91 transitions. [2019-05-23 11:18:06,628 INFO L146 ILogger]: Start accepts. Automaton has 89 states and 91 transitions. Word has length 72 [2019-05-23 11:18:06,628 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:06,628 INFO L146 ILogger]: Abstraction has 89 states and 91 transitions. [2019-05-23 11:18:06,628 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:18:06,628 INFO L146 ILogger]: Start isEmpty. Operand 89 states and 91 transitions. [2019-05-23 11:18:06,630 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 85 [2019-05-23 11:18:06,630 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:06,637 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:06,637 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:06,637 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:06,638 INFO L146 ILogger]: Analyzing trace with hash -437528865, now seen corresponding path program 10 times [2019-05-23 11:18:06,638 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:06,639 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:06,639 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:06,639 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:06,640 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:06,674 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:06,872 INFO L146 ILogger]: Checked inductivity of 352 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-05-23 11:18:06,872 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:06,872 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 11:18:06,882 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:18:06,918 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:18:06,918 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:06,919 INFO L146 ILogger]: Trace formula consists of 125 conjuncts, 13 conjunts are in the unsatisfiable core [2019-05-23 11:18:06,921 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:06,941 INFO L146 ILogger]: Checked inductivity of 352 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-05-23 11:18:06,960 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:06,960 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2019-05-23 11:18:06,961 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:18:06,961 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:18:06,961 INFO L146 ILogger]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:18:06,961 INFO L146 ILogger]: Start difference. First operand 89 states and 91 transitions. Second operand 15 states. [2019-05-23 11:18:07,204 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:07,205 INFO L146 ILogger]: Finished difference Result 148 states and 153 transitions. [2019-05-23 11:18:07,205 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-05-23 11:18:07,205 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 84 [2019-05-23 11:18:07,206 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:07,207 INFO L146 ILogger]: With dead ends: 148 [2019-05-23 11:18:07,207 INFO L146 ILogger]: Without dead ends: 99 [2019-05-23 11:18:07,208 INFO L146 ILogger]: 0 DeclaredPredicates, 97 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:18:07,208 INFO L146 ILogger]: Start minimizeSevpa. Operand 99 states. [2019-05-23 11:18:07,213 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 99 to 95. [2019-05-23 11:18:07,213 INFO L146 ILogger]: Start removeUnreachable. Operand 95 states. [2019-05-23 11:18:07,214 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 95 states to 95 states and 97 transitions. [2019-05-23 11:18:07,214 INFO L146 ILogger]: Start accepts. Automaton has 95 states and 97 transitions. Word has length 84 [2019-05-23 11:18:07,214 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:07,215 INFO L146 ILogger]: Abstraction has 95 states and 97 transitions. [2019-05-23 11:18:07,215 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:18:07,215 INFO L146 ILogger]: Start isEmpty. Operand 95 states and 97 transitions. [2019-05-23 11:18:07,216 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 91 [2019-05-23 11:18:07,216 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:07,216 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:07,216 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:07,217 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:07,217 INFO L146 ILogger]: Analyzing trace with hash -4201824, now seen corresponding path program 11 times [2019-05-23 11:18:07,217 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:07,217 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:07,218 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:07,218 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:07,218 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:07,235 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:07,934 INFO L146 ILogger]: Checked inductivity of 420 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2019-05-23 11:18:07,934 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:07,934 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 11:18:07,943 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:18:09,724 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2019-05-23 11:18:09,725 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:09,729 INFO L146 ILogger]: Trace formula consists of 133 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:18:09,731 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:09,752 INFO L146 ILogger]: Checked inductivity of 420 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2019-05-23 11:18:09,774 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:09,774 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2019-05-23 11:18:09,774 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:18:09,775 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:18:09,775 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:18:09,775 INFO L146 ILogger]: Start difference. First operand 95 states and 97 transitions. Second operand 16 states. [2019-05-23 11:18:09,984 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:09,985 INFO L146 ILogger]: Finished difference Result 157 states and 162 transitions. [2019-05-23 11:18:09,985 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-05-23 11:18:09,986 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 90 [2019-05-23 11:18:09,986 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:09,987 INFO L146 ILogger]: With dead ends: 157 [2019-05-23 11:18:09,987 INFO L146 ILogger]: Without dead ends: 105 [2019-05-23 11:18:09,988 INFO L146 ILogger]: 0 DeclaredPredicates, 104 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:18:09,988 INFO L146 ILogger]: Start minimizeSevpa. Operand 105 states. [2019-05-23 11:18:09,993 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 105 to 101. [2019-05-23 11:18:09,993 INFO L146 ILogger]: Start removeUnreachable. Operand 101 states. [2019-05-23 11:18:09,994 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2019-05-23 11:18:09,994 INFO L146 ILogger]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 90 [2019-05-23 11:18:09,994 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:09,994 INFO L146 ILogger]: Abstraction has 101 states and 103 transitions. [2019-05-23 11:18:09,994 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:18:09,994 INFO L146 ILogger]: Start isEmpty. Operand 101 states and 103 transitions. [2019-05-23 11:18:09,995 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 97 [2019-05-23 11:18:09,995 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:09,996 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:09,996 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:09,996 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:09,996 INFO L146 ILogger]: Analyzing trace with hash 1952950591, now seen corresponding path program 12 times [2019-05-23 11:18:09,996 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:09,996 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:09,997 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:09,997 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:09,998 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:10,013 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:10,474 INFO L146 ILogger]: Checked inductivity of 494 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2019-05-23 11:18:10,475 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:10,475 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:18:10,484 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:18:11,088 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2019-05-23 11:18:11,088 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:11,090 INFO L146 ILogger]: Trace formula consists of 141 conjuncts, 15 conjunts are in the unsatisfiable core [2019-05-23 11:18:11,092 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:11,115 INFO L146 ILogger]: Checked inductivity of 494 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2019-05-23 11:18:11,137 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:11,138 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2019-05-23 11:18:11,138 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:18:11,138 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:18:11,139 INFO L146 ILogger]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:18:11,139 INFO L146 ILogger]: Start difference. First operand 101 states and 103 transitions. Second operand 17 states. [2019-05-23 11:18:11,357 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:11,358 INFO L146 ILogger]: Finished difference Result 166 states and 171 transitions. [2019-05-23 11:18:11,358 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-05-23 11:18:11,358 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 96 [2019-05-23 11:18:11,359 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:11,359 INFO L146 ILogger]: With dead ends: 166 [2019-05-23 11:18:11,359 INFO L146 ILogger]: Without dead ends: 111 [2019-05-23 11:18:11,360 INFO L146 ILogger]: 0 DeclaredPredicates, 111 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:18:11,360 INFO L146 ILogger]: Start minimizeSevpa. Operand 111 states. [2019-05-23 11:18:11,364 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 111 to 107. [2019-05-23 11:18:11,364 INFO L146 ILogger]: Start removeUnreachable. Operand 107 states. [2019-05-23 11:18:11,365 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 107 states to 107 states and 109 transitions. [2019-05-23 11:18:11,365 INFO L146 ILogger]: Start accepts. Automaton has 107 states and 109 transitions. Word has length 96 [2019-05-23 11:18:11,365 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:11,365 INFO L146 ILogger]: Abstraction has 107 states and 109 transitions. [2019-05-23 11:18:11,365 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:18:11,365 INFO L146 ILogger]: Start isEmpty. Operand 107 states and 109 transitions. [2019-05-23 11:18:11,366 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 103 [2019-05-23 11:18:11,366 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:11,367 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:11,367 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:11,367 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:11,367 INFO L146 ILogger]: Analyzing trace with hash -989994944, now seen corresponding path program 13 times [2019-05-23 11:18:11,367 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:11,367 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:11,368 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:11,368 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:11,368 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:11,383 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:11,627 INFO L146 ILogger]: Checked inductivity of 574 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2019-05-23 11:18:11,627 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:11,627 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 11:18:11,637 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:18:11,663 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:11,664 INFO L146 ILogger]: Trace formula consists of 149 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:18:11,666 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:11,695 INFO L146 ILogger]: Checked inductivity of 574 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2019-05-23 11:18:11,713 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:11,713 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2019-05-23 11:18:11,713 INFO L146 ILogger]: Interpolant automaton has 18 states [2019-05-23 11:18:11,714 INFO L146 ILogger]: Constructing interpolant automaton starting with 18 interpolants. [2019-05-23 11:18:11,714 INFO L146 ILogger]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-05-23 11:18:11,714 INFO L146 ILogger]: Start difference. First operand 107 states and 109 transitions. Second operand 18 states. [2019-05-23 11:18:11,968 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:11,968 INFO L146 ILogger]: Finished difference Result 175 states and 180 transitions. [2019-05-23 11:18:11,968 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-05-23 11:18:11,969 INFO L146 ILogger]: Start accepts. Automaton has 18 states. Word has length 102 [2019-05-23 11:18:11,969 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:11,970 INFO L146 ILogger]: With dead ends: 175 [2019-05-23 11:18:11,971 INFO L146 ILogger]: Without dead ends: 117 [2019-05-23 11:18:11,972 INFO L146 ILogger]: 0 DeclaredPredicates, 118 GetRequests, 102 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 11:18:11,972 INFO L146 ILogger]: Start minimizeSevpa. Operand 117 states. [2019-05-23 11:18:11,982 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 117 to 113. [2019-05-23 11:18:11,983 INFO L146 ILogger]: Start removeUnreachable. Operand 113 states. [2019-05-23 11:18:11,983 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 113 states to 113 states and 115 transitions. [2019-05-23 11:18:11,984 INFO L146 ILogger]: Start accepts. Automaton has 113 states and 115 transitions. Word has length 102 [2019-05-23 11:18:11,984 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:11,984 INFO L146 ILogger]: Abstraction has 113 states and 115 transitions. [2019-05-23 11:18:11,984 INFO L146 ILogger]: Interpolant automaton has 18 states. [2019-05-23 11:18:11,984 INFO L146 ILogger]: Start isEmpty. Operand 113 states and 115 transitions. [2019-05-23 11:18:11,985 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 109 [2019-05-23 11:18:11,985 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:11,986 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:11,987 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:11,987 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:11,987 INFO L146 ILogger]: Analyzing trace with hash 319533983, now seen corresponding path program 14 times [2019-05-23 11:18:11,987 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:11,987 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:11,988 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:11,988 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:18:11,988 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:12,008 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:12,207 INFO L146 ILogger]: Checked inductivity of 660 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2019-05-23 11:18:12,207 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:12,207 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 11:18:12,217 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:18:12,245 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:18:12,245 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:12,246 INFO L146 ILogger]: Trace formula consists of 157 conjuncts, 17 conjunts are in the unsatisfiable core [2019-05-23 11:18:12,247 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:12,265 INFO L146 ILogger]: Checked inductivity of 660 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2019-05-23 11:18:12,284 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:12,284 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2019-05-23 11:18:12,284 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:18:12,285 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:18:12,285 INFO L146 ILogger]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:18:12,285 INFO L146 ILogger]: Start difference. First operand 113 states and 115 transitions. Second operand 19 states. [2019-05-23 11:18:12,644 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:12,644 INFO L146 ILogger]: Finished difference Result 184 states and 189 transitions. [2019-05-23 11:18:12,645 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:18:12,645 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 108 [2019-05-23 11:18:12,645 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:12,646 INFO L146 ILogger]: With dead ends: 184 [2019-05-23 11:18:12,646 INFO L146 ILogger]: Without dead ends: 123 [2019-05-23 11:18:12,647 INFO L146 ILogger]: 0 DeclaredPredicates, 125 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:18:12,647 INFO L146 ILogger]: Start minimizeSevpa. Operand 123 states. [2019-05-23 11:18:12,650 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 123 to 119. [2019-05-23 11:18:12,650 INFO L146 ILogger]: Start removeUnreachable. Operand 119 states. [2019-05-23 11:18:12,651 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 119 states to 119 states and 121 transitions. [2019-05-23 11:18:12,651 INFO L146 ILogger]: Start accepts. Automaton has 119 states and 121 transitions. Word has length 108 [2019-05-23 11:18:12,651 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:12,651 INFO L146 ILogger]: Abstraction has 119 states and 121 transitions. [2019-05-23 11:18:12,651 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:18:12,651 INFO L146 ILogger]: Start isEmpty. Operand 119 states and 121 transitions. [2019-05-23 11:18:12,652 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 115 [2019-05-23 11:18:12,652 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:12,653 INFO L146 ILogger]: trace histogram [16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:12,653 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:12,653 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:12,653 INFO L146 ILogger]: Analyzing trace with hash -825842208, now seen corresponding path program 15 times [2019-05-23 11:18:12,653 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:12,653 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:12,654 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:12,654 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:12,654 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:12,669 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:12,945 INFO L146 ILogger]: Checked inductivity of 752 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2019-05-23 11:18:12,945 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:12,945 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 11:18:12,955 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:18:14,250 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2019-05-23 11:18:14,250 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:14,253 INFO L146 ILogger]: Trace formula consists of 165 conjuncts, 21 conjunts are in the unsatisfiable core [2019-05-23 11:18:14,255 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:14,286 INFO L146 ILogger]: Checked inductivity of 752 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2019-05-23 11:18:14,319 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:14,319 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2019-05-23 11:18:14,320 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:18:14,320 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:18:14,320 INFO L146 ILogger]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:18:14,320 INFO L146 ILogger]: Start difference. First operand 119 states and 121 transitions. Second operand 20 states. [2019-05-23 11:18:14,707 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:14,707 INFO L146 ILogger]: Finished difference Result 193 states and 198 transitions. [2019-05-23 11:18:14,708 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-05-23 11:18:14,708 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 114 [2019-05-23 11:18:14,708 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:14,709 INFO L146 ILogger]: With dead ends: 193 [2019-05-23 11:18:14,709 INFO L146 ILogger]: Without dead ends: 129 [2019-05-23 11:18:14,710 INFO L146 ILogger]: 0 DeclaredPredicates, 132 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:18:14,711 INFO L146 ILogger]: Start minimizeSevpa. Operand 129 states. [2019-05-23 11:18:14,714 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 129 to 125. [2019-05-23 11:18:14,714 INFO L146 ILogger]: Start removeUnreachable. Operand 125 states. [2019-05-23 11:18:14,714 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 125 states to 125 states and 127 transitions. [2019-05-23 11:18:14,715 INFO L146 ILogger]: Start accepts. Automaton has 125 states and 127 transitions. Word has length 114 [2019-05-23 11:18:14,715 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:14,715 INFO L146 ILogger]: Abstraction has 125 states and 127 transitions. [2019-05-23 11:18:14,715 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:18:14,715 INFO L146 ILogger]: Start isEmpty. Operand 125 states and 127 transitions. [2019-05-23 11:18:14,716 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 121 [2019-05-23 11:18:14,716 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:14,716 INFO L146 ILogger]: trace histogram [17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:14,717 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:14,717 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:14,717 INFO L146 ILogger]: Analyzing trace with hash 1770911231, now seen corresponding path program 16 times [2019-05-23 11:18:14,717 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:14,717 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:14,718 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:14,718 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:14,718 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:14,732 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:15,596 INFO L146 ILogger]: Checked inductivity of 850 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2019-05-23 11:18:15,596 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:15,597 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 11:18:15,605 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:18:15,630 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:18:15,630 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:15,631 INFO L146 ILogger]: Trace formula consists of 173 conjuncts, 19 conjunts are in the unsatisfiable core [2019-05-23 11:18:15,633 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:15,660 INFO L146 ILogger]: Checked inductivity of 850 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2019-05-23 11:18:15,683 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:15,684 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2019-05-23 11:18:15,684 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:18:15,684 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:18:15,685 INFO L146 ILogger]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:18:15,685 INFO L146 ILogger]: Start difference. First operand 125 states and 127 transitions. Second operand 21 states. [2019-05-23 11:18:15,950 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:15,950 INFO L146 ILogger]: Finished difference Result 202 states and 207 transitions. [2019-05-23 11:18:15,958 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-05-23 11:18:15,958 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 120 [2019-05-23 11:18:15,958 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:15,959 INFO L146 ILogger]: With dead ends: 202 [2019-05-23 11:18:15,959 INFO L146 ILogger]: Without dead ends: 135 [2019-05-23 11:18:15,960 INFO L146 ILogger]: 0 DeclaredPredicates, 139 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:18:15,960 INFO L146 ILogger]: Start minimizeSevpa. Operand 135 states. [2019-05-23 11:18:15,963 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 135 to 131. [2019-05-23 11:18:15,964 INFO L146 ILogger]: Start removeUnreachable. Operand 131 states. [2019-05-23 11:18:15,966 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 131 states to 131 states and 133 transitions. [2019-05-23 11:18:15,966 INFO L146 ILogger]: Start accepts. Automaton has 131 states and 133 transitions. Word has length 120 [2019-05-23 11:18:15,966 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:15,966 INFO L146 ILogger]: Abstraction has 131 states and 133 transitions. [2019-05-23 11:18:15,967 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:18:15,967 INFO L146 ILogger]: Start isEmpty. Operand 131 states and 133 transitions. [2019-05-23 11:18:15,968 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 127 [2019-05-23 11:18:15,968 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:15,968 INFO L146 ILogger]: trace histogram [18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:15,968 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:15,969 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:15,969 INFO L146 ILogger]: Analyzing trace with hash 1688482688, now seen corresponding path program 17 times [2019-05-23 11:18:15,969 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:15,969 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:15,970 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:15,970 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:15,970 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:15,988 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:16,253 INFO L146 ILogger]: Checked inductivity of 954 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2019-05-23 11:18:16,253 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:16,253 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 11:18:16,262 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:18:49,868 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2019-05-23 11:18:49,869 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:49,887 INFO L146 ILogger]: Trace formula consists of 181 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:18:49,889 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:49,923 INFO L146 ILogger]: Checked inductivity of 954 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2019-05-23 11:18:49,954 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:49,955 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2019-05-23 11:18:49,955 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:18:49,955 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:18:49,956 INFO L146 ILogger]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:18:49,956 INFO L146 ILogger]: Start difference. First operand 131 states and 133 transitions. Second operand 22 states. [2019-05-23 11:18:50,211 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:50,211 INFO L146 ILogger]: Finished difference Result 211 states and 216 transitions. [2019-05-23 11:18:50,211 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:18:50,211 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 126 [2019-05-23 11:18:50,212 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:50,213 INFO L146 ILogger]: With dead ends: 211 [2019-05-23 11:18:50,213 INFO L146 ILogger]: Without dead ends: 141 [2019-05-23 11:18:50,214 INFO L146 ILogger]: 0 DeclaredPredicates, 146 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:18:50,214 INFO L146 ILogger]: Start minimizeSevpa. Operand 141 states. [2019-05-23 11:18:50,217 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 141 to 137. [2019-05-23 11:18:50,218 INFO L146 ILogger]: Start removeUnreachable. Operand 137 states. [2019-05-23 11:18:50,218 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 137 states to 137 states and 139 transitions. [2019-05-23 11:18:50,218 INFO L146 ILogger]: Start accepts. Automaton has 137 states and 139 transitions. Word has length 126 [2019-05-23 11:18:50,219 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:50,219 INFO L146 ILogger]: Abstraction has 137 states and 139 transitions. [2019-05-23 11:18:50,219 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:18:50,219 INFO L146 ILogger]: Start isEmpty. Operand 137 states and 139 transitions. [2019-05-23 11:18:50,220 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 133 [2019-05-23 11:18:50,220 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:50,220 INFO L146 ILogger]: trace histogram [19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:50,220 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:50,220 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:50,221 INFO L146 ILogger]: Analyzing trace with hash -551260065, now seen corresponding path program 18 times [2019-05-23 11:18:50,221 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:50,221 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:50,222 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:50,222 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:50,222 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:50,236 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:50,649 INFO L146 ILogger]: Checked inductivity of 1064 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2019-05-23 11:18:50,649 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:50,650 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 11:18:50,663 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:18:57,873 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2019-05-23 11:18:57,873 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:57,881 INFO L146 ILogger]: Trace formula consists of 189 conjuncts, 21 conjunts are in the unsatisfiable core [2019-05-23 11:18:57,882 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:57,908 INFO L146 ILogger]: Checked inductivity of 1064 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2019-05-23 11:18:57,930 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:57,931 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2019-05-23 11:18:57,931 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:18:57,931 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:18:57,932 INFO L146 ILogger]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:18:57,933 INFO L146 ILogger]: Start difference. First operand 137 states and 139 transitions. Second operand 23 states. [2019-05-23 11:18:58,265 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:58,265 INFO L146 ILogger]: Finished difference Result 220 states and 225 transitions. [2019-05-23 11:18:58,265 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-05-23 11:18:58,266 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 132 [2019-05-23 11:18:58,266 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:58,267 INFO L146 ILogger]: With dead ends: 220 [2019-05-23 11:18:58,267 INFO L146 ILogger]: Without dead ends: 147 [2019-05-23 11:18:58,268 INFO L146 ILogger]: 0 DeclaredPredicates, 153 GetRequests, 132 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 11:18:58,268 INFO L146 ILogger]: Start minimizeSevpa. Operand 147 states. [2019-05-23 11:18:58,272 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 147 to 143. [2019-05-23 11:18:58,272 INFO L146 ILogger]: Start removeUnreachable. Operand 143 states. [2019-05-23 11:18:58,273 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 143 states to 143 states and 145 transitions. [2019-05-23 11:18:58,273 INFO L146 ILogger]: Start accepts. Automaton has 143 states and 145 transitions. Word has length 132 [2019-05-23 11:18:58,273 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:58,273 INFO L146 ILogger]: Abstraction has 143 states and 145 transitions. [2019-05-23 11:18:58,274 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:18:58,274 INFO L146 ILogger]: Start isEmpty. Operand 143 states and 145 transitions. [2019-05-23 11:18:58,274 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 139 [2019-05-23 11:18:58,274 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:58,275 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:58,275 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:58,275 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:58,275 INFO L146 ILogger]: Analyzing trace with hash 1587579168, now seen corresponding path program 19 times [2019-05-23 11:18:58,275 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:58,275 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:58,276 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:58,276 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:58,276 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:58,291 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:58,604 INFO L146 ILogger]: Checked inductivity of 1180 backedges. 0 proven. 590 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2019-05-23 11:18:58,604 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:58,604 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:18:58,613 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:18:58,643 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:58,644 INFO L146 ILogger]: Trace formula consists of 197 conjuncts, 22 conjunts are in the unsatisfiable core [2019-05-23 11:18:58,645 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:58,673 INFO L146 ILogger]: Checked inductivity of 1180 backedges. 0 proven. 590 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2019-05-23 11:18:58,691 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:58,691 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2019-05-23 11:18:58,692 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:18:58,692 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:18:58,692 INFO L146 ILogger]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:18:58,692 INFO L146 ILogger]: Start difference. First operand 143 states and 145 transitions. Second operand 24 states. [2019-05-23 11:18:58,908 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:58,908 INFO L146 ILogger]: Finished difference Result 229 states and 234 transitions. [2019-05-23 11:18:58,909 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-05-23 11:18:58,909 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 138 [2019-05-23 11:18:58,909 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:58,910 INFO L146 ILogger]: With dead ends: 229 [2019-05-23 11:18:58,910 INFO L146 ILogger]: Without dead ends: 153 [2019-05-23 11:18:58,911 INFO L146 ILogger]: 0 DeclaredPredicates, 160 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:18:58,912 INFO L146 ILogger]: Start minimizeSevpa. Operand 153 states. [2019-05-23 11:18:58,915 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 153 to 149. [2019-05-23 11:18:58,915 INFO L146 ILogger]: Start removeUnreachable. Operand 149 states. [2019-05-23 11:18:58,916 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 149 states to 149 states and 151 transitions. [2019-05-23 11:18:58,916 INFO L146 ILogger]: Start accepts. Automaton has 149 states and 151 transitions. Word has length 138 [2019-05-23 11:18:58,916 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:58,916 INFO L146 ILogger]: Abstraction has 149 states and 151 transitions. [2019-05-23 11:18:58,916 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:18:58,917 INFO L146 ILogger]: Start isEmpty. Operand 149 states and 151 transitions. [2019-05-23 11:18:58,917 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 145 [2019-05-23 11:18:58,917 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:58,918 INFO L146 ILogger]: trace histogram [21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:58,918 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:58,918 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:58,918 INFO L146 ILogger]: Analyzing trace with hash -91938113, now seen corresponding path program 20 times [2019-05-23 11:18:58,918 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:58,918 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:58,919 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:58,919 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:18:58,919 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:58,935 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:59,228 INFO L146 ILogger]: Checked inductivity of 1302 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2019-05-23 11:18:59,228 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:59,228 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:18:59,237 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:18:59,272 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:18:59,272 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:59,273 INFO L146 ILogger]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2019-05-23 11:18:59,274 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:59,304 INFO L146 ILogger]: Checked inductivity of 1302 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2019-05-23 11:18:59,327 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:59,327 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2019-05-23 11:18:59,328 INFO L146 ILogger]: Interpolant automaton has 25 states [2019-05-23 11:18:59,328 INFO L146 ILogger]: Constructing interpolant automaton starting with 25 interpolants. [2019-05-23 11:18:59,328 INFO L146 ILogger]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:18:59,328 INFO L146 ILogger]: Start difference. First operand 149 states and 151 transitions. Second operand 25 states. [2019-05-23 11:18:59,555 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:59,555 INFO L146 ILogger]: Finished difference Result 238 states and 243 transitions. [2019-05-23 11:18:59,558 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:18:59,558 INFO L146 ILogger]: Start accepts. Automaton has 25 states. Word has length 144 [2019-05-23 11:18:59,558 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:59,559 INFO L146 ILogger]: With dead ends: 238 [2019-05-23 11:18:59,559 INFO L146 ILogger]: Without dead ends: 159 [2019-05-23 11:18:59,560 INFO L146 ILogger]: 0 DeclaredPredicates, 167 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:18:59,560 INFO L146 ILogger]: Start minimizeSevpa. Operand 159 states. [2019-05-23 11:18:59,563 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 159 to 155. [2019-05-23 11:18:59,563 INFO L146 ILogger]: Start removeUnreachable. Operand 155 states. [2019-05-23 11:18:59,564 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 155 states to 155 states and 157 transitions. [2019-05-23 11:18:59,564 INFO L146 ILogger]: Start accepts. Automaton has 155 states and 157 transitions. Word has length 144 [2019-05-23 11:18:59,564 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:59,564 INFO L146 ILogger]: Abstraction has 155 states and 157 transitions. [2019-05-23 11:18:59,564 INFO L146 ILogger]: Interpolant automaton has 25 states. [2019-05-23 11:18:59,564 INFO L146 ILogger]: Start isEmpty. Operand 155 states and 157 transitions. [2019-05-23 11:18:59,565 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 151 [2019-05-23 11:18:59,565 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:59,565 INFO L146 ILogger]: trace histogram [22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:59,566 INFO L146 ILogger]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:59,566 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:59,566 INFO L146 ILogger]: Analyzing trace with hash -985291072, now seen corresponding path program 21 times [2019-05-23 11:18:59,566 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:59,566 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:59,567 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:59,567 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:59,567 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:59,583 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:00,038 INFO L146 ILogger]: Checked inductivity of 1430 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2019-05-23 11:19:00,038 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:00,038 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:19:00,047 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:19:03,955 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2019-05-23 11:19:03,955 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:03,961 INFO L146 ILogger]: Trace formula consists of 213 conjuncts, 27 conjunts are in the unsatisfiable core [2019-05-23 11:19:03,963 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:04,066 INFO L146 ILogger]: Checked inductivity of 1430 backedges. 64 proven. 715 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2019-05-23 11:19:04,086 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:04,087 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 27] total 28 [2019-05-23 11:19:04,087 INFO L146 ILogger]: Interpolant automaton has 28 states [2019-05-23 11:19:04,087 INFO L146 ILogger]: Constructing interpolant automaton starting with 28 interpolants. [2019-05-23 11:19:04,088 INFO L146 ILogger]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:19:04,088 INFO L146 ILogger]: Start difference. First operand 155 states and 157 transitions. Second operand 28 states. [2019-05-23 11:19:04,386 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:04,386 INFO L146 ILogger]: Finished difference Result 249 states and 256 transitions. [2019-05-23 11:19:04,387 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:19:04,387 INFO L146 ILogger]: Start accepts. Automaton has 28 states. Word has length 150 [2019-05-23 11:19:04,387 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:04,388 INFO L146 ILogger]: With dead ends: 249 [2019-05-23 11:19:04,388 INFO L146 ILogger]: Without dead ends: 167 [2019-05-23 11:19:04,389 INFO L146 ILogger]: 0 DeclaredPredicates, 174 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:19:04,390 INFO L146 ILogger]: Start minimizeSevpa. Operand 167 states. [2019-05-23 11:19:04,393 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 167 to 167. [2019-05-23 11:19:04,393 INFO L146 ILogger]: Start removeUnreachable. Operand 167 states. [2019-05-23 11:19:04,394 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 167 states to 167 states and 169 transitions. [2019-05-23 11:19:04,394 INFO L146 ILogger]: Start accepts. Automaton has 167 states and 169 transitions. Word has length 150 [2019-05-23 11:19:04,394 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:04,394 INFO L146 ILogger]: Abstraction has 167 states and 169 transitions. [2019-05-23 11:19:04,394 INFO L146 ILogger]: Interpolant automaton has 28 states. [2019-05-23 11:19:04,394 INFO L146 ILogger]: Start isEmpty. Operand 167 states and 169 transitions. [2019-05-23 11:19:04,395 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 163 [2019-05-23 11:19:04,395 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:04,395 INFO L146 ILogger]: trace histogram [24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:04,396 INFO L146 ILogger]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:04,396 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:04,396 INFO L146 ILogger]: Analyzing trace with hash 1906150496, now seen corresponding path program 22 times [2019-05-23 11:19:04,396 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:04,396 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:04,397 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:04,397 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:04,397 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:04,414 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:04,815 INFO L146 ILogger]: Checked inductivity of 1704 backedges. 0 proven. 852 refuted. 0 times theorem prover too weak. 852 trivial. 0 not checked. [2019-05-23 11:19:04,815 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:04,815 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:19:04,823 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:19:04,861 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:19:04,862 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:04,862 INFO L146 ILogger]: Trace formula consists of 229 conjuncts, 26 conjunts are in the unsatisfiable core [2019-05-23 11:19:04,864 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:04,897 INFO L146 ILogger]: Checked inductivity of 1704 backedges. 0 proven. 852 refuted. 0 times theorem prover too weak. 852 trivial. 0 not checked. [2019-05-23 11:19:04,916 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:04,916 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2019-05-23 11:19:04,917 INFO L146 ILogger]: Interpolant automaton has 28 states [2019-05-23 11:19:04,917 INFO L146 ILogger]: Constructing interpolant automaton starting with 28 interpolants. [2019-05-23 11:19:04,917 INFO L146 ILogger]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:19:04,918 INFO L146 ILogger]: Start difference. First operand 167 states and 169 transitions. Second operand 28 states. [2019-05-23 11:19:05,795 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:05,795 INFO L146 ILogger]: Finished difference Result 265 states and 270 transitions. [2019-05-23 11:19:05,796 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:19:05,796 INFO L146 ILogger]: Start accepts. Automaton has 28 states. Word has length 162 [2019-05-23 11:19:05,796 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:05,797 INFO L146 ILogger]: With dead ends: 265 [2019-05-23 11:19:05,797 INFO L146 ILogger]: Without dead ends: 177 [2019-05-23 11:19:05,798 INFO L146 ILogger]: 0 DeclaredPredicates, 188 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:19:05,799 INFO L146 ILogger]: Start minimizeSevpa. Operand 177 states. [2019-05-23 11:19:05,801 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 177 to 173. [2019-05-23 11:19:05,801 INFO L146 ILogger]: Start removeUnreachable. Operand 173 states. [2019-05-23 11:19:05,802 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 173 states to 173 states and 175 transitions. [2019-05-23 11:19:05,802 INFO L146 ILogger]: Start accepts. Automaton has 173 states and 175 transitions. Word has length 162 [2019-05-23 11:19:05,803 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:05,803 INFO L146 ILogger]: Abstraction has 173 states and 175 transitions. [2019-05-23 11:19:05,803 INFO L146 ILogger]: Interpolant automaton has 28 states. [2019-05-23 11:19:05,803 INFO L146 ILogger]: Start isEmpty. Operand 173 states and 175 transitions. [2019-05-23 11:19:05,804 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 169 [2019-05-23 11:19:05,804 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:05,804 INFO L146 ILogger]: trace histogram [25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:05,804 INFO L146 ILogger]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:05,804 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:05,805 INFO L146 ILogger]: Analyzing trace with hash 452800383, now seen corresponding path program 23 times [2019-05-23 11:19:05,805 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:05,805 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:05,805 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:05,806 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:05,806 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:05,826 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:06,460 INFO L146 ILogger]: Checked inductivity of 1850 backedges. 0 proven. 925 refuted. 0 times theorem prover too weak. 925 trivial. 0 not checked. [2019-05-23 11:19:06,460 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:06,460 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:19:06,469 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1