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/reducercommutativity/sep60_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:24:03,273 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:24:03,275 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:24:03,291 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:24:03,291 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:24:03,293 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:24:03,295 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:24:03,297 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:24:03,300 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:24:03,301 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:24:03,302 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:24:03,303 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:24:03,304 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:24:03,307 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:24:03,314 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:24:03,315 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:24:03,316 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:24:03,317 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:24:03,321 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:24:03,324 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:24:03,326 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:24:03,327 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:24:03,331 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:24:03,331 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:24:03,331 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:24:03,332 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:24:03,332 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:24:03,334 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:24:03,334 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:24:03,335 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:24:03,335 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:24:03,338 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:24:03,340 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:24:03,340 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:24:03,341 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:24:03,341 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:24:03,341 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:24:03,342 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:24:03,343 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:24:03,343 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:24:03,367 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:24:03,368 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:24:03,369 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:24:03,369 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:24:03,370 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:24:03,370 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:24:03,370 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:24:03,370 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:24:03,370 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:24:03,371 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:24:03,372 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:24:03,372 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:24:03,372 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:24:03,372 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:24:03,372 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:24:03,373 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:24:03,373 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:24:03,373 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:24:03,373 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:24:03,373 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:24:03,373 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:24:03,375 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:24:03,375 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:24:03,375 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:24:03,375 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:24:03,376 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:24:03,376 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:24:03,376 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:24:03,376 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 11:24:03,425 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:24:03,441 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:24:03,446 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:24:03,447 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:24:03,448 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:24:03,449 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/reducercommutativity/sep60_true-unreach-call.i [2019-05-23 11:24:03,520 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ee17710c/421909413e5c4408ac6e3b53dd169c78/FLAG9f57750f0 [2019-05-23 11:24:03,948 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:24:03,949 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/reducercommutativity/sep60_true-unreach-call.i [2019-05-23 11:24:03,955 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ee17710c/421909413e5c4408ac6e3b53dd169c78/FLAG9f57750f0 [2019-05-23 11:24:04,325 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ee17710c/421909413e5c4408ac6e3b53dd169c78 [2019-05-23 11:24:04,334 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:24:04,336 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:24:04,337 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:24:04,337 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:24:04,342 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:24:04,343 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:24:04" (1/1) ... [2019-05-23 11:24:04,346 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b597a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:04, skipping insertion in model container [2019-05-23 11:24:04,346 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:24:04" (1/1) ... [2019-05-23 11:24:04,353 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:24:04,376 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:24:04,582 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:24:04,591 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:24:04,617 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:24:04,638 INFO L146 ILogger]: Completed translation [2019-05-23 11:24:04,639 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:04 WrapperNode [2019-05-23 11:24:04,639 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:24:04,640 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:24:04,640 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:24:04,641 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:24:04,650 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:04" (1/1) ... [2019-05-23 11:24:04,661 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:04" (1/1) ... [2019-05-23 11:24:04,689 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:24:04,690 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:24:04,690 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:24:04,691 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:24:04,699 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:04" (1/1) ... [2019-05-23 11:24:04,699 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:04" (1/1) ... [2019-05-23 11:24:04,702 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:04" (1/1) ... [2019-05-23 11:24:04,702 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:04" (1/1) ... [2019-05-23 11:24:04,711 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:04" (1/1) ... [2019-05-23 11:24:04,810 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:04" (1/1) ... [2019-05-23 11:24:04,812 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:04" (1/1) ... [2019-05-23 11:24:04,822 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:24:04,822 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:24:04,823 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:24:04,823 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:24:04,824 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:04" (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 11:24:04,882 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:24:04,882 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:24:04,883 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:24:04,883 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:24:04,883 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:24:04,883 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:24:05,681 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:24:05,682 INFO L146 ILogger]: Removed 15 assume(true) statements. [2019-05-23 11:24:05,683 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:24:05 BoogieIcfgContainer [2019-05-23 11:24:05,683 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:24:05,684 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:24:05,684 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:24:05,687 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:24:05,688 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:24:04" (1/3) ... [2019-05-23 11:24:05,688 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2512d8b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:24:05, skipping insertion in model container [2019-05-23 11:24:05,689 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:04" (2/3) ... [2019-05-23 11:24:05,689 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2512d8b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:24:05, skipping insertion in model container [2019-05-23 11:24:05,689 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:24:05" (3/3) ... [2019-05-23 11:24:05,691 INFO L146 ILogger]: Analyzing ICFG sep60_true-unreach-call.i [2019-05-23 11:24:05,700 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:24:05,706 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:24:05,722 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:24:05,753 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:24:05,753 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:24:05,753 INFO L146 ILogger]: Hoare is true [2019-05-23 11:24:05,754 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:24:05,754 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:24:05,754 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:24:05,754 INFO L146 ILogger]: Difference is false [2019-05-23 11:24:05,754 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:24:05,755 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:24:05,772 INFO L146 ILogger]: Start isEmpty. Operand 120 states. [2019-05-23 11:24:05,781 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 63 [2019-05-23 11:24:05,781 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:05,782 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:05,784 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:05,788 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:05,788 INFO L146 ILogger]: Analyzing trace with hash -1539618111, now seen corresponding path program 1 times [2019-05-23 11:24:05,790 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:05,790 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:05,831 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:05,831 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:05,832 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:05,871 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:05,944 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 11:24:05,947 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:24:05,947 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:24:05,951 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:24:05,964 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:24:05,965 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:24:05,967 INFO L146 ILogger]: Start difference. First operand 120 states. Second operand 3 states. [2019-05-23 11:24:06,044 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:06,045 INFO L146 ILogger]: Finished difference Result 229 states and 255 transitions. [2019-05-23 11:24:06,045 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:24:06,047 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 62 [2019-05-23 11:24:06,047 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:06,058 INFO L146 ILogger]: With dead ends: 229 [2019-05-23 11:24:06,058 INFO L146 ILogger]: Without dead ends: 120 [2019-05-23 11:24:06,062 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 11:24:06,077 INFO L146 ILogger]: Start minimizeSevpa. Operand 120 states. [2019-05-23 11:24:06,096 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 120 to 115. [2019-05-23 11:24:06,097 INFO L146 ILogger]: Start removeUnreachable. Operand 115 states. [2019-05-23 11:24:06,100 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 115 states to 115 states and 122 transitions. [2019-05-23 11:24:06,102 INFO L146 ILogger]: Start accepts. Automaton has 115 states and 122 transitions. Word has length 62 [2019-05-23 11:24:06,102 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:06,103 INFO L146 ILogger]: Abstraction has 115 states and 122 transitions. [2019-05-23 11:24:06,103 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:24:06,103 INFO L146 ILogger]: Start isEmpty. Operand 115 states and 122 transitions. [2019-05-23 11:24:06,106 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 70 [2019-05-23 11:24:06,106 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:06,106 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:06,107 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:06,107 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:06,107 INFO L146 ILogger]: Analyzing trace with hash -866477706, now seen corresponding path program 1 times [2019-05-23 11:24:06,108 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:06,108 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:06,109 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:06,109 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:06,109 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:06,134 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:06,391 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:24:06,391 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:06,392 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 11:24:06,407 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:06,481 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:06,483 INFO L146 ILogger]: Trace formula consists of 127 conjuncts, 2 conjunts are in the unsatisfiable core [2019-05-23 11:24:06,493 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:06,577 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:24:06,607 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:24:06,607 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-05-23 11:24:06,610 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:24:06,611 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:24:06,614 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:24:06,614 INFO L146 ILogger]: Start difference. First operand 115 states and 122 transitions. Second operand 6 states. [2019-05-23 11:24:07,026 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:07,026 INFO L146 ILogger]: Finished difference Result 263 states and 283 transitions. [2019-05-23 11:24:07,027 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:24:07,027 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 69 [2019-05-23 11:24:07,027 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:07,029 INFO L146 ILogger]: With dead ends: 263 [2019-05-23 11:24:07,029 INFO L146 ILogger]: Without dead ends: 166 [2019-05-23 11:24:07,031 INFO L146 ILogger]: 0 DeclaredPredicates, 75 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:24:07,032 INFO L146 ILogger]: Start minimizeSevpa. Operand 166 states. [2019-05-23 11:24:07,041 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 166 to 125. [2019-05-23 11:24:07,041 INFO L146 ILogger]: Start removeUnreachable. Operand 125 states. [2019-05-23 11:24:07,043 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 125 states to 125 states and 132 transitions. [2019-05-23 11:24:07,043 INFO L146 ILogger]: Start accepts. Automaton has 125 states and 132 transitions. Word has length 69 [2019-05-23 11:24:07,043 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:07,044 INFO L146 ILogger]: Abstraction has 125 states and 132 transitions. [2019-05-23 11:24:07,044 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:24:07,044 INFO L146 ILogger]: Start isEmpty. Operand 125 states and 132 transitions. [2019-05-23 11:24:07,048 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 107 [2019-05-23 11:24:07,048 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:07,048 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:07,048 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:07,049 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:07,049 INFO L146 ILogger]: Analyzing trace with hash -1426784878, now seen corresponding path program 1 times [2019-05-23 11:24:07,049 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:07,049 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:07,051 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:07,051 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:07,051 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:07,078 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:07,189 INFO L146 ILogger]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-05-23 11:24:07,190 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:07,190 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 11:24:07,199 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:07,248 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:07,249 INFO L146 ILogger]: Trace formula consists of 182 conjuncts, 2 conjunts are in the unsatisfiable core [2019-05-23 11:24:07,253 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:07,291 INFO L146 ILogger]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-05-23 11:24:07,312 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:24:07,312 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-05-23 11:24:07,313 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:24:07,313 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:24:07,314 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:24:07,314 INFO L146 ILogger]: Start difference. First operand 125 states and 132 transitions. Second operand 6 states. [2019-05-23 11:24:08,114 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:08,114 INFO L146 ILogger]: Finished difference Result 288 states and 309 transitions. [2019-05-23 11:24:08,115 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:24:08,115 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 106 [2019-05-23 11:24:08,116 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:08,119 INFO L146 ILogger]: With dead ends: 288 [2019-05-23 11:24:08,119 INFO L146 ILogger]: Without dead ends: 209 [2019-05-23 11:24:08,123 INFO L146 ILogger]: 0 DeclaredPredicates, 114 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:24:08,124 INFO L146 ILogger]: Start minimizeSevpa. Operand 209 states. [2019-05-23 11:24:08,141 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 209 to 168. [2019-05-23 11:24:08,141 INFO L146 ILogger]: Start removeUnreachable. Operand 168 states. [2019-05-23 11:24:08,143 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 168 states to 168 states and 178 transitions. [2019-05-23 11:24:08,143 INFO L146 ILogger]: Start accepts. Automaton has 168 states and 178 transitions. Word has length 106 [2019-05-23 11:24:08,143 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:08,144 INFO L146 ILogger]: Abstraction has 168 states and 178 transitions. [2019-05-23 11:24:08,144 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:24:08,144 INFO L146 ILogger]: Start isEmpty. Operand 168 states and 178 transitions. [2019-05-23 11:24:08,149 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 144 [2019-05-23 11:24:08,149 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:08,150 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:08,150 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:08,150 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:08,150 INFO L146 ILogger]: Analyzing trace with hash 303794939, now seen corresponding path program 1 times [2019-05-23 11:24:08,151 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:08,151 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:08,152 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:08,152 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:08,152 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:08,191 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:08,395 INFO L146 ILogger]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-05-23 11:24:08,395 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:08,396 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 11:24:08,412 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:08,468 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:08,469 INFO L146 ILogger]: Trace formula consists of 237 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:24:08,474 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:08,741 INFO L146 ILogger]: Checked inductivity of 46 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-05-23 11:24:08,760 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:08,760 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2019-05-23 11:24:08,761 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:24:08,761 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:24:08,762 INFO L146 ILogger]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:24:08,762 INFO L146 ILogger]: Start difference. First operand 168 states and 178 transitions. Second operand 10 states. [2019-05-23 11:24:09,057 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:09,058 INFO L146 ILogger]: Finished difference Result 335 states and 356 transitions. [2019-05-23 11:24:09,058 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:24:09,058 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 143 [2019-05-23 11:24:09,058 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:09,059 INFO L146 ILogger]: With dead ends: 335 [2019-05-23 11:24:09,060 INFO L146 ILogger]: Without dead ends: 192 [2019-05-23 11:24:09,061 INFO L146 ILogger]: 0 DeclaredPredicates, 153 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:24:09,061 INFO L146 ILogger]: Start minimizeSevpa. Operand 192 states. [2019-05-23 11:24:09,071 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 192 to 182. [2019-05-23 11:24:09,071 INFO L146 ILogger]: Start removeUnreachable. Operand 182 states. [2019-05-23 11:24:09,072 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 182 states to 182 states and 192 transitions. [2019-05-23 11:24:09,072 INFO L146 ILogger]: Start accepts. Automaton has 182 states and 192 transitions. Word has length 143 [2019-05-23 11:24:09,073 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:09,073 INFO L146 ILogger]: Abstraction has 182 states and 192 transitions. [2019-05-23 11:24:09,073 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:24:09,073 INFO L146 ILogger]: Start isEmpty. Operand 182 states and 192 transitions. [2019-05-23 11:24:09,076 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 158 [2019-05-23 11:24:09,076 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:09,076 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:09,077 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:09,077 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:09,077 INFO L146 ILogger]: Analyzing trace with hash 1916510114, now seen corresponding path program 2 times [2019-05-23 11:24:09,077 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:09,077 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:09,078 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:09,078 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:09,079 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:09,132 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:09,487 INFO L146 ILogger]: Checked inductivity of 69 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-05-23 11:24:09,487 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:09,487 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 11:24:09,498 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:24:09,565 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:24:09,565 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:09,566 INFO L146 ILogger]: Trace formula consists of 257 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:24:09,578 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:09,870 INFO L146 ILogger]: Checked inductivity of 69 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-05-23 11:24:09,889 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:09,889 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2019-05-23 11:24:09,891 INFO L146 ILogger]: Interpolant automaton has 14 states [2019-05-23 11:24:09,891 INFO L146 ILogger]: Constructing interpolant automaton starting with 14 interpolants. [2019-05-23 11:24:09,891 INFO L146 ILogger]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:24:09,892 INFO L146 ILogger]: Start difference. First operand 182 states and 192 transitions. Second operand 14 states. [2019-05-23 11:24:10,416 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:10,416 INFO L146 ILogger]: Finished difference Result 422 states and 451 transitions. [2019-05-23 11:24:10,416 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-05-23 11:24:10,416 INFO L146 ILogger]: Start accepts. Automaton has 14 states. Word has length 157 [2019-05-23 11:24:10,417 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:10,418 INFO L146 ILogger]: With dead ends: 422 [2019-05-23 11:24:10,418 INFO L146 ILogger]: Without dead ends: 272 [2019-05-23 11:24:10,419 INFO L146 ILogger]: 0 DeclaredPredicates, 179 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:24:10,420 INFO L146 ILogger]: Start minimizeSevpa. Operand 272 states. [2019-05-23 11:24:10,429 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 272 to 231. [2019-05-23 11:24:10,429 INFO L146 ILogger]: Start removeUnreachable. Operand 231 states. [2019-05-23 11:24:10,430 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 231 states to 231 states and 244 transitions. [2019-05-23 11:24:10,430 INFO L146 ILogger]: Start accepts. Automaton has 231 states and 244 transitions. Word has length 157 [2019-05-23 11:24:10,431 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:10,431 INFO L146 ILogger]: Abstraction has 231 states and 244 transitions. [2019-05-23 11:24:10,431 INFO L146 ILogger]: Interpolant automaton has 14 states. [2019-05-23 11:24:10,431 INFO L146 ILogger]: Start isEmpty. Operand 231 states and 244 transitions. [2019-05-23 11:24:10,434 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 195 [2019-05-23 11:24:10,435 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:10,435 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:10,435 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:10,436 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:10,436 INFO L146 ILogger]: Analyzing trace with hash -27182914, now seen corresponding path program 3 times [2019-05-23 11:24:10,436 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:10,436 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:10,437 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:10,437 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:10,437 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:10,477 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:10,664 INFO L146 ILogger]: Checked inductivity of 154 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2019-05-23 11:24:10,664 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:10,665 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:24:10,675 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:24:10,740 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:24:10,740 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:10,741 INFO L146 ILogger]: Trace formula consists of 247 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:24:10,751 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:10,911 INFO L146 ILogger]: Checked inductivity of 154 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2019-05-23 11:24:10,929 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:10,930 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2019-05-23 11:24:10,930 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:24:10,931 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:24:10,932 INFO L146 ILogger]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:24:10,932 INFO L146 ILogger]: Start difference. First operand 231 states and 244 transitions. Second operand 16 states. [2019-05-23 11:24:11,346 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:11,347 INFO L146 ILogger]: Finished difference Result 447 states and 474 transitions. [2019-05-23 11:24:11,356 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-05-23 11:24:11,356 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 194 [2019-05-23 11:24:11,357 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:11,358 INFO L146 ILogger]: With dead ends: 447 [2019-05-23 11:24:11,358 INFO L146 ILogger]: Without dead ends: 255 [2019-05-23 11:24:11,360 INFO L146 ILogger]: 0 DeclaredPredicates, 216 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=165, Invalid=591, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:24:11,361 INFO L146 ILogger]: Start minimizeSevpa. Operand 255 states. [2019-05-23 11:24:11,378 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 255 to 245. [2019-05-23 11:24:11,378 INFO L146 ILogger]: Start removeUnreachable. Operand 245 states. [2019-05-23 11:24:11,380 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 245 states to 245 states and 258 transitions. [2019-05-23 11:24:11,381 INFO L146 ILogger]: Start accepts. Automaton has 245 states and 258 transitions. Word has length 194 [2019-05-23 11:24:11,381 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:11,381 INFO L146 ILogger]: Abstraction has 245 states and 258 transitions. [2019-05-23 11:24:11,382 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:24:11,382 INFO L146 ILogger]: Start isEmpty. Operand 245 states and 258 transitions. [2019-05-23 11:24:11,393 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 209 [2019-05-23 11:24:11,393 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:11,394 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:11,394 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:11,395 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:11,398 INFO L146 ILogger]: Analyzing trace with hash -181774217, now seen corresponding path program 4 times [2019-05-23 11:24:11,398 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:11,398 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:11,399 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:11,399 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:11,400 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:11,476 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:11,685 INFO L146 ILogger]: Checked inductivity of 198 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2019-05-23 11:24:11,685 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:11,686 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 11:24:11,694 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:24:11,779 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:24:11,780 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:11,781 INFO L146 ILogger]: Trace formula consists of 332 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:24:11,785 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:11,852 INFO L146 ILogger]: Checked inductivity of 198 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2019-05-23 11:24:11,872 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:11,872 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2019-05-23 11:24:11,873 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:24:11,873 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:24:11,873 INFO L146 ILogger]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:24:11,874 INFO L146 ILogger]: Start difference. First operand 245 states and 258 transitions. Second operand 15 states. [2019-05-23 11:24:12,142 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:12,142 INFO L146 ILogger]: Finished difference Result 456 states and 482 transitions. [2019-05-23 11:24:12,143 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:24:12,143 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 208 [2019-05-23 11:24:12,143 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:12,145 INFO L146 ILogger]: With dead ends: 456 [2019-05-23 11:24:12,145 INFO L146 ILogger]: Without dead ends: 257 [2019-05-23 11:24:12,146 INFO L146 ILogger]: 0 DeclaredPredicates, 230 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:24:12,146 INFO L146 ILogger]: Start minimizeSevpa. Operand 257 states. [2019-05-23 11:24:12,151 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 257 to 252. [2019-05-23 11:24:12,152 INFO L146 ILogger]: Start removeUnreachable. Operand 252 states. [2019-05-23 11:24:12,153 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 252 states to 252 states and 265 transitions. [2019-05-23 11:24:12,153 INFO L146 ILogger]: Start accepts. Automaton has 252 states and 265 transitions. Word has length 208 [2019-05-23 11:24:12,153 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:12,154 INFO L146 ILogger]: Abstraction has 252 states and 265 transitions. [2019-05-23 11:24:12,154 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:24:12,154 INFO L146 ILogger]: Start isEmpty. Operand 252 states and 265 transitions. [2019-05-23 11:24:12,157 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 216 [2019-05-23 11:24:12,157 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:12,157 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:12,158 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:12,158 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:12,158 INFO L146 ILogger]: Analyzing trace with hash 2119176513, now seen corresponding path program 5 times [2019-05-23 11:24:12,158 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:12,158 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:12,159 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:12,159 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:12,160 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:12,196 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:12,612 INFO L146 ILogger]: Checked inductivity of 234 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2019-05-23 11:24:12,612 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:12,612 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 11:24:12,622 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:24:12,711 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-05-23 11:24:12,712 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:12,713 INFO L146 ILogger]: Trace formula consists of 342 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:24:12,715 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:12,862 INFO L146 ILogger]: Checked inductivity of 234 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2019-05-23 11:24:12,891 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:12,892 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 22 [2019-05-23 11:24:12,892 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:24:12,893 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:24:12,893 INFO L146 ILogger]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:24:12,893 INFO L146 ILogger]: Start difference. First operand 252 states and 265 transitions. Second operand 22 states. [2019-05-23 11:24:13,639 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:13,639 INFO L146 ILogger]: Finished difference Result 541 states and 576 transitions. [2019-05-23 11:24:13,640 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:24:13,640 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 215 [2019-05-23 11:24:13,640 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:13,642 INFO L146 ILogger]: With dead ends: 541 [2019-05-23 11:24:13,642 INFO L146 ILogger]: Without dead ends: 342 [2019-05-23 11:24:13,643 INFO L146 ILogger]: 0 DeclaredPredicates, 253 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=320, Invalid=1240, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:24:13,644 INFO L146 ILogger]: Start minimizeSevpa. Operand 342 states. [2019-05-23 11:24:13,649 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 342 to 301. [2019-05-23 11:24:13,649 INFO L146 ILogger]: Start removeUnreachable. Operand 301 states. [2019-05-23 11:24:13,650 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 301 states to 301 states and 317 transitions. [2019-05-23 11:24:13,651 INFO L146 ILogger]: Start accepts. Automaton has 301 states and 317 transitions. Word has length 215 [2019-05-23 11:24:13,651 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:13,651 INFO L146 ILogger]: Abstraction has 301 states and 317 transitions. [2019-05-23 11:24:13,651 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:24:13,652 INFO L146 ILogger]: Start isEmpty. Operand 301 states and 317 transitions. [2019-05-23 11:24:13,655 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 253 [2019-05-23 11:24:13,655 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:13,655 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:13,655 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:13,656 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:13,656 INFO L146 ILogger]: Analyzing trace with hash 1502036637, now seen corresponding path program 6 times [2019-05-23 11:24:13,656 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:13,656 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:13,657 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:13,657 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:13,657 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:13,690 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:13,950 INFO L146 ILogger]: Checked inductivity of 370 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2019-05-23 11:24:13,950 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:13,951 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 11:24:13,959 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:24:14,151 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-05-23 11:24:14,151 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:14,154 INFO L146 ILogger]: Trace formula consists of 342 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:24:14,156 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:14,282 INFO L146 ILogger]: Checked inductivity of 370 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2019-05-23 11:24:14,301 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:14,302 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9] total 24 [2019-05-23 11:24:14,302 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:24:14,303 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:24:14,303 INFO L146 ILogger]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:24:14,303 INFO L146 ILogger]: Start difference. First operand 301 states and 317 transitions. Second operand 24 states. [2019-05-23 11:24:16,144 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:16,145 INFO L146 ILogger]: Finished difference Result 566 states and 599 transitions. [2019-05-23 11:24:16,145 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-05-23 11:24:16,145 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 252 [2019-05-23 11:24:16,146 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:16,147 INFO L146 ILogger]: With dead ends: 566 [2019-05-23 11:24:16,147 INFO L146 ILogger]: Without dead ends: 325 [2019-05-23 11:24:16,148 INFO L146 ILogger]: 0 DeclaredPredicates, 288 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=395, Invalid=1497, Unknown=0, NotChecked=0, Total=1892 [2019-05-23 11:24:16,149 INFO L146 ILogger]: Start minimizeSevpa. Operand 325 states. [2019-05-23 11:24:16,154 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 325 to 315. [2019-05-23 11:24:16,154 INFO L146 ILogger]: Start removeUnreachable. Operand 315 states. [2019-05-23 11:24:16,155 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 315 states to 315 states and 331 transitions. [2019-05-23 11:24:16,155 INFO L146 ILogger]: Start accepts. Automaton has 315 states and 331 transitions. Word has length 252 [2019-05-23 11:24:16,155 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:16,156 INFO L146 ILogger]: Abstraction has 315 states and 331 transitions. [2019-05-23 11:24:16,156 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:24:16,156 INFO L146 ILogger]: Start isEmpty. Operand 315 states and 331 transitions. [2019-05-23 11:24:16,158 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 267 [2019-05-23 11:24:16,159 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:16,159 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:16,159 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:16,159 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:16,160 INFO L146 ILogger]: Analyzing trace with hash 745701892, now seen corresponding path program 7 times [2019-05-23 11:24:16,160 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:16,160 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:16,161 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:16,161 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:16,161 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:16,194 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:16,454 INFO L146 ILogger]: Checked inductivity of 442 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2019-05-23 11:24:16,454 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:16,454 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 11:24:16,464 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:16,536 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:16,539 INFO L146 ILogger]: Trace formula consists of 417 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:24:16,543 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:16,644 INFO L146 ILogger]: Checked inductivity of 442 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2019-05-23 11:24:16,663 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:16,663 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-05-23 11:24:16,664 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:24:16,664 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:24:16,664 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:24:16,665 INFO L146 ILogger]: Start difference. First operand 315 states and 331 transitions. Second operand 21 states. [2019-05-23 11:24:17,009 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:17,009 INFO L146 ILogger]: Finished difference Result 575 states and 607 transitions. [2019-05-23 11:24:17,009 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:24:17,009 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 266 [2019-05-23 11:24:17,010 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:17,011 INFO L146 ILogger]: With dead ends: 575 [2019-05-23 11:24:17,011 INFO L146 ILogger]: Without dead ends: 327 [2019-05-23 11:24:17,012 INFO L146 ILogger]: 0 DeclaredPredicates, 300 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:24:17,013 INFO L146 ILogger]: Start minimizeSevpa. Operand 327 states. [2019-05-23 11:24:17,018 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 327 to 322. [2019-05-23 11:24:17,019 INFO L146 ILogger]: Start removeUnreachable. Operand 322 states. [2019-05-23 11:24:17,019 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 322 states to 322 states and 338 transitions. [2019-05-23 11:24:17,020 INFO L146 ILogger]: Start accepts. Automaton has 322 states and 338 transitions. Word has length 266 [2019-05-23 11:24:17,020 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:17,020 INFO L146 ILogger]: Abstraction has 322 states and 338 transitions. [2019-05-23 11:24:17,020 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:24:17,021 INFO L146 ILogger]: Start isEmpty. Operand 322 states and 338 transitions. [2019-05-23 11:24:17,022 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 274 [2019-05-23 11:24:17,022 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:17,022 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:17,023 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:17,023 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:17,023 INFO L146 ILogger]: Analyzing trace with hash -403322290, now seen corresponding path program 8 times [2019-05-23 11:24:17,023 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:17,023 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:17,024 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:17,024 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:17,024 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:17,056 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:17,565 INFO L146 ILogger]: Checked inductivity of 499 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2019-05-23 11:24:17,566 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:17,566 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 11:24:17,576 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:24:17,645 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:24:17,645 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:17,647 INFO L146 ILogger]: Trace formula consists of 427 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:24:17,650 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:17,761 INFO L146 ILogger]: Checked inductivity of 499 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2019-05-23 11:24:17,780 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:17,780 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2019-05-23 11:24:17,781 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:24:17,781 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:24:17,782 INFO L146 ILogger]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:24:17,782 INFO L146 ILogger]: Start difference. First operand 322 states and 338 transitions. Second operand 23 states. [2019-05-23 11:24:18,133 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:18,134 INFO L146 ILogger]: Finished difference Result 582 states and 614 transitions. [2019-05-23 11:24:18,141 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:24:18,141 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 273 [2019-05-23 11:24:18,142 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:18,143 INFO L146 ILogger]: With dead ends: 582 [2019-05-23 11:24:18,143 INFO L146 ILogger]: Without dead ends: 334 [2019-05-23 11:24:18,145 INFO L146 ILogger]: 0 DeclaredPredicates, 311 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:24:18,146 INFO L146 ILogger]: Start minimizeSevpa. Operand 334 states. [2019-05-23 11:24:18,151 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 334 to 329. [2019-05-23 11:24:18,151 INFO L146 ILogger]: Start removeUnreachable. Operand 329 states. [2019-05-23 11:24:18,154 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 329 states to 329 states and 345 transitions. [2019-05-23 11:24:18,154 INFO L146 ILogger]: Start accepts. Automaton has 329 states and 345 transitions. Word has length 273 [2019-05-23 11:24:18,155 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:18,155 INFO L146 ILogger]: Abstraction has 329 states and 345 transitions. [2019-05-23 11:24:18,155 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:24:18,155 INFO L146 ILogger]: Start isEmpty. Operand 329 states and 345 transitions. [2019-05-23 11:24:18,157 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 281 [2019-05-23 11:24:18,157 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:18,157 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:18,157 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:18,157 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:18,158 INFO L146 ILogger]: Analyzing trace with hash 516455108, now seen corresponding path program 9 times [2019-05-23 11:24:18,158 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:18,158 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:18,159 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:18,159 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:18,159 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:18,198 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:18,591 INFO L146 ILogger]: Checked inductivity of 563 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2019-05-23 11:24:18,591 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:18,591 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 11:24:18,599 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:24:18,714 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-05-23 11:24:18,714 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:18,715 INFO L146 ILogger]: Trace formula consists of 377 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:24:18,718 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:18,901 INFO L146 ILogger]: Checked inductivity of 563 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2019-05-23 11:24:18,920 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:18,921 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 11] total 32 [2019-05-23 11:24:18,921 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:24:18,921 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:24:18,922 INFO L146 ILogger]: CoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:24:18,922 INFO L146 ILogger]: Start difference. First operand 329 states and 345 transitions. Second operand 32 states. [2019-05-23 11:24:19,642 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:19,642 INFO L146 ILogger]: Finished difference Result 601 states and 634 transitions. [2019-05-23 11:24:19,643 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-05-23 11:24:19,643 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 280 [2019-05-23 11:24:19,644 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:19,646 INFO L146 ILogger]: With dead ends: 601 [2019-05-23 11:24:19,646 INFO L146 ILogger]: Without dead ends: 353 [2019-05-23 11:24:19,647 INFO L146 ILogger]: 0 DeclaredPredicates, 330 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=725, Invalid=2815, Unknown=0, NotChecked=0, Total=3540 [2019-05-23 11:24:19,648 INFO L146 ILogger]: Start minimizeSevpa. Operand 353 states. [2019-05-23 11:24:19,653 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 353 to 343. [2019-05-23 11:24:19,653 INFO L146 ILogger]: Start removeUnreachable. Operand 343 states. [2019-05-23 11:24:19,654 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 343 states to 343 states and 359 transitions. [2019-05-23 11:24:19,654 INFO L146 ILogger]: Start accepts. Automaton has 343 states and 359 transitions. Word has length 280 [2019-05-23 11:24:19,654 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:19,654 INFO L146 ILogger]: Abstraction has 343 states and 359 transitions. [2019-05-23 11:24:19,655 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:24:19,655 INFO L146 ILogger]: Start isEmpty. Operand 343 states and 359 transitions. [2019-05-23 11:24:19,656 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 295 [2019-05-23 11:24:19,656 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:19,657 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:19,657 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:19,657 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:19,657 INFO L146 ILogger]: Analyzing trace with hash 1645785853, now seen corresponding path program 10 times [2019-05-23 11:24:19,657 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:19,658 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:19,658 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:19,658 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:19,659 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:19,688 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:20,427 INFO L146 ILogger]: Checked inductivity of 663 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2019-05-23 11:24:20,427 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:20,428 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 11:24:20,436 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:24:20,573 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:24:20,573 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:20,575 INFO L146 ILogger]: Trace formula consists of 457 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:24:20,579 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:20,683 INFO L146 ILogger]: Checked inductivity of 663 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2019-05-23 11:24:20,702 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:20,703 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2019-05-23 11:24:20,703 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:24:20,703 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:24:20,704 INFO L146 ILogger]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:24:20,704 INFO L146 ILogger]: Start difference. First operand 343 states and 359 transitions. Second operand 27 states. [2019-05-23 11:24:21,497 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:21,498 INFO L146 ILogger]: Finished difference Result 610 states and 642 transitions. [2019-05-23 11:24:21,498 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-05-23 11:24:21,498 INFO L146 ILogger]: Start accepts. Automaton has 27 states. Word has length 294 [2019-05-23 11:24:21,499 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:21,500 INFO L146 ILogger]: With dead ends: 610 [2019-05-23 11:24:21,500 INFO L146 ILogger]: Without dead ends: 355 [2019-05-23 11:24:21,502 INFO L146 ILogger]: 0 DeclaredPredicates, 340 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=748, Invalid=1604, Unknown=0, NotChecked=0, Total=2352 [2019-05-23 11:24:21,502 INFO L146 ILogger]: Start minimizeSevpa. Operand 355 states. [2019-05-23 11:24:21,507 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 355 to 350. [2019-05-23 11:24:21,508 INFO L146 ILogger]: Start removeUnreachable. Operand 350 states. [2019-05-23 11:24:21,508 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 350 states to 350 states and 366 transitions. [2019-05-23 11:24:21,509 INFO L146 ILogger]: Start accepts. Automaton has 350 states and 366 transitions. Word has length 294 [2019-05-23 11:24:21,509 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:21,509 INFO L146 ILogger]: Abstraction has 350 states and 366 transitions. [2019-05-23 11:24:21,509 INFO L146 ILogger]: Interpolant automaton has 27 states. [2019-05-23 11:24:21,509 INFO L146 ILogger]: Start isEmpty. Operand 350 states and 366 transitions. [2019-05-23 11:24:21,511 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 302 [2019-05-23 11:24:21,511 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:21,511 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:21,512 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:21,512 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:21,512 INFO L146 ILogger]: Analyzing trace with hash -193460153, now seen corresponding path program 11 times [2019-05-23 11:24:21,512 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:21,512 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:21,513 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:21,513 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:21,513 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:21,561 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:22,437 INFO L146 ILogger]: Checked inductivity of 741 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2019-05-23 11:24:22,437 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:22,438 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 11:24:22,446 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:24:22,902 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2019-05-23 11:24:22,902 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:22,905 INFO L146 ILogger]: Trace formula consists of 467 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:24:22,910 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:23,270 INFO L146 ILogger]: Checked inductivity of 741 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 677 trivial. 0 not checked. [2019-05-23 11:24:23,289 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:23,289 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 11] total 36 [2019-05-23 11:24:23,290 INFO L146 ILogger]: Interpolant automaton has 36 states [2019-05-23 11:24:23,290 INFO L146 ILogger]: Constructing interpolant automaton starting with 36 interpolants. [2019-05-23 11:24:23,291 INFO L146 ILogger]: CoverageRelationStatistics Valid=229, Invalid=1031, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:24:23,291 INFO L146 ILogger]: Start difference. First operand 350 states and 366 transitions. Second operand 36 states. [2019-05-23 11:24:24,540 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:24,540 INFO L146 ILogger]: Finished difference Result 695 states and 736 transitions. [2019-05-23 11:24:24,540 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2019-05-23 11:24:24,541 INFO L146 ILogger]: Start accepts. Automaton has 36 states. Word has length 301 [2019-05-23 11:24:24,541 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:24,543 INFO L146 ILogger]: With dead ends: 695 [2019-05-23 11:24:24,543 INFO L146 ILogger]: Without dead ends: 440 [2019-05-23 11:24:24,545 INFO L146 ILogger]: 0 DeclaredPredicates, 367 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=965, Invalid=3591, Unknown=0, NotChecked=0, Total=4556 [2019-05-23 11:24:24,545 INFO L146 ILogger]: Start minimizeSevpa. Operand 440 states. [2019-05-23 11:24:24,551 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 440 to 399. [2019-05-23 11:24:24,552 INFO L146 ILogger]: Start removeUnreachable. Operand 399 states. [2019-05-23 11:24:24,552 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 399 states to 399 states and 418 transitions. [2019-05-23 11:24:24,553 INFO L146 ILogger]: Start accepts. Automaton has 399 states and 418 transitions. Word has length 301 [2019-05-23 11:24:24,553 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:24,553 INFO L146 ILogger]: Abstraction has 399 states and 418 transitions. [2019-05-23 11:24:24,553 INFO L146 ILogger]: Interpolant automaton has 36 states. [2019-05-23 11:24:24,553 INFO L146 ILogger]: Start isEmpty. Operand 399 states and 418 transitions. [2019-05-23 11:24:24,555 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 339 [2019-05-23 11:24:24,555 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:24,556 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:24,556 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:24,556 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:24,556 INFO L146 ILogger]: Analyzing trace with hash 566181539, now seen corresponding path program 12 times [2019-05-23 11:24:24,556 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:24,556 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:24,557 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:24,557 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:24,557 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:24,589 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:26,618 INFO L146 ILogger]: Checked inductivity of 949 backedges. 0 proven. 559 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2019-05-23 11:24:26,619 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:26,619 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 11:24:26,627 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:24:27,015 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2019-05-23 11:24:27,015 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:27,017 INFO L146 ILogger]: Trace formula consists of 492 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:24:27,021 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:27,346 INFO L146 ILogger]: Checked inductivity of 949 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 844 trivial. 0 not checked. [2019-05-23 11:24:27,365 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:27,365 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 13] total 40 [2019-05-23 11:24:27,366 INFO L146 ILogger]: Interpolant automaton has 40 states [2019-05-23 11:24:27,366 INFO L146 ILogger]: Constructing interpolant automaton starting with 40 interpolants. [2019-05-23 11:24:27,367 INFO L146 ILogger]: CoverageRelationStatistics Valid=271, Invalid=1289, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:24:27,367 INFO L146 ILogger]: Start difference. First operand 399 states and 418 transitions. Second operand 40 states. [2019-05-23 11:24:28,565 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:28,565 INFO L146 ILogger]: Finished difference Result 786 states and 833 transitions. [2019-05-23 11:24:28,566 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2019-05-23 11:24:28,566 INFO L146 ILogger]: Start accepts. Automaton has 40 states. Word has length 338 [2019-05-23 11:24:28,566 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:28,569 INFO L146 ILogger]: With dead ends: 786 [2019-05-23 11:24:28,569 INFO L146 ILogger]: Without dead ends: 489 [2019-05-23 11:24:28,572 INFO L146 ILogger]: 0 DeclaredPredicates, 412 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1155, Invalid=4545, Unknown=0, NotChecked=0, Total=5700 [2019-05-23 11:24:28,573 INFO L146 ILogger]: Start minimizeSevpa. Operand 489 states. [2019-05-23 11:24:28,579 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 489 to 448. [2019-05-23 11:24:28,580 INFO L146 ILogger]: Start removeUnreachable. Operand 448 states. [2019-05-23 11:24:28,581 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 448 states to 448 states and 470 transitions. [2019-05-23 11:24:28,581 INFO L146 ILogger]: Start accepts. Automaton has 448 states and 470 transitions. Word has length 338 [2019-05-23 11:24:28,581 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:28,581 INFO L146 ILogger]: Abstraction has 448 states and 470 transitions. [2019-05-23 11:24:28,581 INFO L146 ILogger]: Interpolant automaton has 40 states. [2019-05-23 11:24:28,581 INFO L146 ILogger]: Start isEmpty. Operand 448 states and 470 transitions. [2019-05-23 11:24:28,584 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 376 [2019-05-23 11:24:28,584 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:28,584 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 14, 14, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:28,584 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:28,585 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:28,585 INFO L146 ILogger]: Analyzing trace with hash -1484133421, now seen corresponding path program 13 times [2019-05-23 11:24:28,585 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:28,585 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:28,586 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:28,586 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:28,586 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:28,621 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:30,235 INFO L146 ILogger]: Checked inductivity of 1194 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2019-05-23 11:24:30,235 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:30,235 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 11:24:30,245 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:30,327 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:30,329 INFO L146 ILogger]: Trace formula consists of 577 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:24:30,335 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:31,063 INFO L146 ILogger]: Checked inductivity of 1194 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2019-05-23 11:24:31,120 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:31,120 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2019-05-23 11:24:31,122 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:24:31,122 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:24:31,123 INFO L146 ILogger]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:24:31,123 INFO L146 ILogger]: Start difference. First operand 448 states and 470 transitions. Second operand 33 states. [2019-05-23 11:24:32,028 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:32,028 INFO L146 ILogger]: Finished difference Result 799 states and 843 transitions. [2019-05-23 11:24:32,028 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-05-23 11:24:32,028 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 375 [2019-05-23 11:24:32,029 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:32,030 INFO L146 ILogger]: With dead ends: 799 [2019-05-23 11:24:32,030 INFO L146 ILogger]: Without dead ends: 460 [2019-05-23 11:24:32,032 INFO L146 ILogger]: 0 DeclaredPredicates, 433 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1159, Invalid=2501, Unknown=0, NotChecked=0, Total=3660 [2019-05-23 11:24:32,032 INFO L146 ILogger]: Start minimizeSevpa. Operand 460 states. [2019-05-23 11:24:32,038 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 460 to 455. [2019-05-23 11:24:32,038 INFO L146 ILogger]: Start removeUnreachable. Operand 455 states. [2019-05-23 11:24:32,039 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 455 states to 455 states and 477 transitions. [2019-05-23 11:24:32,039 INFO L146 ILogger]: Start accepts. Automaton has 455 states and 477 transitions. Word has length 375 [2019-05-23 11:24:32,039 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:32,040 INFO L146 ILogger]: Abstraction has 455 states and 477 transitions. [2019-05-23 11:24:32,040 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:24:32,040 INFO L146 ILogger]: Start isEmpty. Operand 455 states and 477 transitions. [2019-05-23 11:24:32,042 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 383 [2019-05-23 11:24:32,042 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:32,043 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 15, 15, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:32,043 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:32,043 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:32,043 INFO L146 ILogger]: Analyzing trace with hash 512746441, now seen corresponding path program 14 times [2019-05-23 11:24:32,043 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:32,044 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:32,044 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:32,044 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:32,044 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:32,080 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:32,549 INFO L146 ILogger]: Checked inductivity of 1293 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2019-05-23 11:24:32,550 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:32,550 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 11:24:32,559 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:24:32,652 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:24:32,652 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:32,653 INFO L146 ILogger]: Trace formula consists of 587 conjuncts, 32 conjunts are in the unsatisfiable core [2019-05-23 11:24:32,659 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:32,826 INFO L146 ILogger]: Checked inductivity of 1293 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2019-05-23 11:24:32,845 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:32,846 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2019-05-23 11:24:32,846 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:24:32,846 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:24:32,847 INFO L146 ILogger]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:24:32,847 INFO L146 ILogger]: Start difference. First operand 455 states and 477 transitions. Second operand 35 states. [2019-05-23 11:24:33,481 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:33,482 INFO L146 ILogger]: Finished difference Result 806 states and 850 transitions. [2019-05-23 11:24:33,489 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-05-23 11:24:33,489 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 382 [2019-05-23 11:24:33,489 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:33,492 INFO L146 ILogger]: With dead ends: 806 [2019-05-23 11:24:33,492 INFO L146 ILogger]: Without dead ends: 467 [2019-05-23 11:24:33,494 INFO L146 ILogger]: 0 DeclaredPredicates, 444 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1316, Invalid=2844, Unknown=0, NotChecked=0, Total=4160 [2019-05-23 11:24:33,495 INFO L146 ILogger]: Start minimizeSevpa. Operand 467 states. [2019-05-23 11:24:33,502 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 467 to 462. [2019-05-23 11:24:33,502 INFO L146 ILogger]: Start removeUnreachable. Operand 462 states. [2019-05-23 11:24:33,503 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 462 states to 462 states and 484 transitions. [2019-05-23 11:24:33,503 INFO L146 ILogger]: Start accepts. Automaton has 462 states and 484 transitions. Word has length 382 [2019-05-23 11:24:33,504 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:33,504 INFO L146 ILogger]: Abstraction has 462 states and 484 transitions. [2019-05-23 11:24:33,504 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:24:33,504 INFO L146 ILogger]: Start isEmpty. Operand 462 states and 484 transitions. [2019-05-23 11:24:33,506 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 390 [2019-05-23 11:24:33,507 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:33,507 INFO L146 ILogger]: trace histogram [16, 16, 16, 16, 16, 16, 16, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:33,507 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:33,508 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:33,508 INFO L146 ILogger]: Analyzing trace with hash -1130943725, now seen corresponding path program 15 times [2019-05-23 11:24:33,508 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:33,508 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:33,509 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:33,509 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:33,509 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:33,550 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:34,193 INFO L146 ILogger]: Checked inductivity of 1399 backedges. 0 proven. 856 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2019-05-23 11:24:34,193 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:34,193 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 11:24:34,202 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:24:34,430 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-05-23 11:24:34,430 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:34,432 INFO L146 ILogger]: Trace formula consists of 442 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:24:34,436 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:34,723 INFO L146 ILogger]: Checked inductivity of 1399 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 1324 trivial. 0 not checked. [2019-05-23 11:24:34,745 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:34,746 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 13] total 46 [2019-05-23 11:24:34,746 INFO L146 ILogger]: Interpolant automaton has 46 states [2019-05-23 11:24:34,746 INFO L146 ILogger]: Constructing interpolant automaton starting with 46 interpolants. [2019-05-23 11:24:34,747 INFO L146 ILogger]: CoverageRelationStatistics Valid=370, Invalid=1700, Unknown=0, NotChecked=0, Total=2070 [2019-05-23 11:24:34,747 INFO L146 ILogger]: Start difference. First operand 462 states and 484 transitions. Second operand 46 states. [2019-05-23 11:24:36,083 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:36,083 INFO L146 ILogger]: Finished difference Result 825 states and 870 transitions. [2019-05-23 11:24:36,084 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2019-05-23 11:24:36,084 INFO L146 ILogger]: Start accepts. Automaton has 46 states. Word has length 389 [2019-05-23 11:24:36,084 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:36,086 INFO L146 ILogger]: With dead ends: 825 [2019-05-23 11:24:36,086 INFO L146 ILogger]: Without dead ends: 486 [2019-05-23 11:24:36,089 INFO L146 ILogger]: 0 DeclaredPredicates, 465 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1462 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1620, Invalid=6036, Unknown=0, NotChecked=0, Total=7656 [2019-05-23 11:24:36,090 INFO L146 ILogger]: Start minimizeSevpa. Operand 486 states. [2019-05-23 11:24:36,096 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 486 to 476. [2019-05-23 11:24:36,096 INFO L146 ILogger]: Start removeUnreachable. Operand 476 states. [2019-05-23 11:24:36,097 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 476 states to 476 states and 498 transitions. [2019-05-23 11:24:36,097 INFO L146 ILogger]: Start accepts. Automaton has 476 states and 498 transitions. Word has length 389 [2019-05-23 11:24:36,097 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:36,097 INFO L146 ILogger]: Abstraction has 476 states and 498 transitions. [2019-05-23 11:24:36,097 INFO L146 ILogger]: Interpolant automaton has 46 states. [2019-05-23 11:24:36,098 INFO L146 ILogger]: Start isEmpty. Operand 476 states and 498 transitions. [2019-05-23 11:24:36,100 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 404 [2019-05-23 11:24:36,100 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:36,100 INFO L146 ILogger]: trace histogram [17, 17, 17, 17, 17, 17, 17, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:36,101 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:36,101 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:36,101 INFO L146 ILogger]: Analyzing trace with hash 1135245882, now seen corresponding path program 16 times [2019-05-23 11:24:36,101 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:36,101 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:36,102 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:36,102 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:36,102 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:36,137 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:37,075 INFO L146 ILogger]: Checked inductivity of 1548 backedges. 0 proven. 969 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2019-05-23 11:24:37,075 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:37,075 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 11:24:37,084 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:24:37,448 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:24:37,449 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:37,452 INFO L146 ILogger]: Trace formula consists of 617 conjuncts, 36 conjunts are in the unsatisfiable core [2019-05-23 11:24:37,456 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:37,735 INFO L146 ILogger]: Checked inductivity of 1548 backedges. 0 proven. 969 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2019-05-23 11:24:37,755 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:37,756 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2019-05-23 11:24:37,756 INFO L146 ILogger]: Interpolant automaton has 39 states [2019-05-23 11:24:37,757 INFO L146 ILogger]: Constructing interpolant automaton starting with 39 interpolants. [2019-05-23 11:24:37,757 INFO L146 ILogger]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2019-05-23 11:24:37,757 INFO L146 ILogger]: Start difference. First operand 476 states and 498 transitions. Second operand 39 states. [2019-05-23 11:24:38,626 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:38,626 INFO L146 ILogger]: Finished difference Result 834 states and 878 transitions. [2019-05-23 11:24:38,627 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2019-05-23 11:24:38,627 INFO L146 ILogger]: Start accepts. Automaton has 39 states. Word has length 403 [2019-05-23 11:24:38,628 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:38,630 INFO L146 ILogger]: With dead ends: 834 [2019-05-23 11:24:38,630 INFO L146 ILogger]: Without dead ends: 488 [2019-05-23 11:24:38,633 INFO L146 ILogger]: 0 DeclaredPredicates, 473 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1660, Invalid=3596, Unknown=0, NotChecked=0, Total=5256 [2019-05-23 11:24:38,634 INFO L146 ILogger]: Start minimizeSevpa. Operand 488 states. [2019-05-23 11:24:38,640 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 488 to 483. [2019-05-23 11:24:38,640 INFO L146 ILogger]: Start removeUnreachable. Operand 483 states. [2019-05-23 11:24:38,641 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 483 states to 483 states and 505 transitions. [2019-05-23 11:24:38,641 INFO L146 ILogger]: Start accepts. Automaton has 483 states and 505 transitions. Word has length 403 [2019-05-23 11:24:38,642 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:38,642 INFO L146 ILogger]: Abstraction has 483 states and 505 transitions. [2019-05-23 11:24:38,642 INFO L146 ILogger]: Interpolant automaton has 39 states. [2019-05-23 11:24:38,642 INFO L146 ILogger]: Start isEmpty. Operand 483 states and 505 transitions. [2019-05-23 11:24:38,644 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 411 [2019-05-23 11:24:38,645 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:38,645 INFO L146 ILogger]: trace histogram [18, 18, 18, 18, 18, 18, 18, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:38,645 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:38,646 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:38,646 INFO L146 ILogger]: Analyzing trace with hash 2037220656, now seen corresponding path program 17 times [2019-05-23 11:24:38,646 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:38,646 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:38,647 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:38,647 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:38,647 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:38,696 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:39,353 INFO L146 ILogger]: Checked inductivity of 1668 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2019-05-23 11:24:39,354 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:39,354 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 11:24:39,365 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:24:41,040 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2019-05-23 11:24:41,040 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:41,044 INFO L146 ILogger]: Trace formula consists of 627 conjuncts, 38 conjunts are in the unsatisfiable core [2019-05-23 11:24:41,048 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:41,208 INFO L146 ILogger]: Checked inductivity of 1668 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2019-05-23 11:24:41,240 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:41,240 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2019-05-23 11:24:41,240 INFO L146 ILogger]: Interpolant automaton has 41 states [2019-05-23 11:24:41,241 INFO L146 ILogger]: Constructing interpolant automaton starting with 41 interpolants. [2019-05-23 11:24:41,241 INFO L146 ILogger]: CoverageRelationStatistics Valid=440, Invalid=1200, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:24:41,241 INFO L146 ILogger]: Start difference. First operand 483 states and 505 transitions. Second operand 41 states. [2019-05-23 11:24:42,436 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:42,436 INFO L146 ILogger]: Finished difference Result 841 states and 885 transitions. [2019-05-23 11:24:42,436 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-05-23 11:24:42,436 INFO L146 ILogger]: Start accepts. Automaton has 41 states. Word has length 410 [2019-05-23 11:24:42,437 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:42,438 INFO L146 ILogger]: With dead ends: 841 [2019-05-23 11:24:42,438 INFO L146 ILogger]: Without dead ends: 495 [2019-05-23 11:24:42,442 INFO L146 ILogger]: 0 DeclaredPredicates, 484 GetRequests, 409 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1847, Invalid=4005, Unknown=0, NotChecked=0, Total=5852 [2019-05-23 11:24:42,443 INFO L146 ILogger]: Start minimizeSevpa. Operand 495 states. [2019-05-23 11:24:42,450 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 495 to 490. [2019-05-23 11:24:42,450 INFO L146 ILogger]: Start removeUnreachable. Operand 490 states. [2019-05-23 11:24:42,451 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 490 states to 490 states and 512 transitions. [2019-05-23 11:24:42,451 INFO L146 ILogger]: Start accepts. Automaton has 490 states and 512 transitions. Word has length 410 [2019-05-23 11:24:42,451 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:42,451 INFO L146 ILogger]: Abstraction has 490 states and 512 transitions. [2019-05-23 11:24:42,451 INFO L146 ILogger]: Interpolant automaton has 41 states. [2019-05-23 11:24:42,452 INFO L146 ILogger]: Start isEmpty. Operand 490 states and 512 transitions. [2019-05-23 11:24:42,454 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 418 [2019-05-23 11:24:42,454 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:42,455 INFO L146 ILogger]: trace histogram [19, 19, 19, 19, 19, 19, 19, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:42,455 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:42,455 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:42,455 INFO L146 ILogger]: Analyzing trace with hash 1886148986, now seen corresponding path program 18 times [2019-05-23 11:24:42,455 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:42,456 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:42,456 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:42,456 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:42,457 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:42,504 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:43,380 INFO L146 ILogger]: Checked inductivity of 1795 backedges. 0 proven. 1216 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2019-05-23 11:24:43,380 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:43,380 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 11:24:43,389 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:24:44,233 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-05-23 11:24:44,233 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:44,237 INFO L146 ILogger]: Trace formula consists of 567 conjuncts, 32 conjunts are in the unsatisfiable core [2019-05-23 11:24:44,240 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:45,131 INFO L146 ILogger]: Checked inductivity of 1795 backedges. 127 proven. 156 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2019-05-23 11:24:45,151 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:45,151 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 20] total 59 [2019-05-23 11:24:45,152 INFO L146 ILogger]: Interpolant automaton has 59 states [2019-05-23 11:24:45,152 INFO L146 ILogger]: Constructing interpolant automaton starting with 59 interpolants. [2019-05-23 11:24:45,153 INFO L146 ILogger]: CoverageRelationStatistics Valid=530, Invalid=2892, Unknown=0, NotChecked=0, Total=3422 [2019-05-23 11:24:45,153 INFO L146 ILogger]: Start difference. First operand 490 states and 512 transitions. Second operand 59 states. [2019-05-23 11:24:50,618 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:50,618 INFO L146 ILogger]: Finished difference Result 926 states and 979 transitions. [2019-05-23 11:24:50,618 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2019-05-23 11:24:50,618 INFO L146 ILogger]: Start accepts. Automaton has 59 states. Word has length 417 [2019-05-23 11:24:50,619 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:50,623 INFO L146 ILogger]: With dead ends: 926 [2019-05-23 11:24:50,623 INFO L146 ILogger]: Without dead ends: 580 [2019-05-23 11:24:50,625 INFO L146 ILogger]: 0 DeclaredPredicates, 538 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4457 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=3647, Invalid=15813, Unknown=0, NotChecked=0, Total=19460 [2019-05-23 11:24:50,626 INFO L146 ILogger]: Start minimizeSevpa. Operand 580 states. [2019-05-23 11:24:50,633 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 580 to 539. [2019-05-23 11:24:50,633 INFO L146 ILogger]: Start removeUnreachable. Operand 539 states. [2019-05-23 11:24:50,634 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 539 states to 539 states and 564 transitions. [2019-05-23 11:24:50,634 INFO L146 ILogger]: Start accepts. Automaton has 539 states and 564 transitions. Word has length 417 [2019-05-23 11:24:50,635 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:50,635 INFO L146 ILogger]: Abstraction has 539 states and 564 transitions. [2019-05-23 11:24:50,635 INFO L146 ILogger]: Interpolant automaton has 59 states. [2019-05-23 11:24:50,635 INFO L146 ILogger]: Start isEmpty. Operand 539 states and 564 transitions. [2019-05-23 11:24:50,638 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 455 [2019-05-23 11:24:50,638 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:50,638 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 20, 20, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:50,639 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:50,639 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:50,639 INFO L146 ILogger]: Analyzing trace with hash 326628758, now seen corresponding path program 19 times [2019-05-23 11:24:50,639 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:50,639 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:50,640 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:50,640 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:50,640 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:50,683 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:52,342 INFO L146 ILogger]: Checked inductivity of 2112 backedges. 0 proven. 1350 refuted. 0 times theorem prover too weak. 762 trivial. 0 not checked. [2019-05-23 11:24:52,343 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:52,343 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 11:24:52,352 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:52,458 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:52,461 INFO L146 ILogger]: Trace formula consists of 692 conjuncts, 42 conjunts are in the unsatisfiable core [2019-05-23 11:24:52,467 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:52,745 INFO L146 ILogger]: Checked inductivity of 2112 backedges. 0 proven. 1350 refuted. 0 times theorem prover too weak. 762 trivial. 0 not checked. [2019-05-23 11:24:52,763 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:52,764 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2019-05-23 11:24:52,764 INFO L146 ILogger]: Interpolant automaton has 45 states [2019-05-23 11:24:52,764 INFO L146 ILogger]: Constructing interpolant automaton starting with 45 interpolants. [2019-05-23 11:24:52,765 INFO L146 ILogger]: CoverageRelationStatistics Valid=528, Invalid=1452, Unknown=0, NotChecked=0, Total=1980 [2019-05-23 11:24:52,765 INFO L146 ILogger]: Start difference. First operand 539 states and 564 transitions. Second operand 45 states. [2019-05-23 11:24:53,879 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:53,880 INFO L146 ILogger]: Finished difference Result 939 states and 989 transitions. [2019-05-23 11:24:53,881 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2019-05-23 11:24:53,881 INFO L146 ILogger]: Start accepts. Automaton has 45 states. Word has length 454 [2019-05-23 11:24:53,882 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:53,884 INFO L146 ILogger]: With dead ends: 939 [2019-05-23 11:24:53,885 INFO L146 ILogger]: Without dead ends: 551 [2019-05-23 11:24:53,886 INFO L146 ILogger]: 0 DeclaredPredicates, 536 GetRequests, 453 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2251, Invalid=4889, Unknown=0, NotChecked=0, Total=7140 [2019-05-23 11:24:53,886 INFO L146 ILogger]: Start minimizeSevpa. Operand 551 states. [2019-05-23 11:24:53,893 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 551 to 546. [2019-05-23 11:24:53,893 INFO L146 ILogger]: Start removeUnreachable. Operand 546 states. [2019-05-23 11:24:53,894 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 546 states to 546 states and 571 transitions. [2019-05-23 11:24:53,894 INFO L146 ILogger]: Start accepts. Automaton has 546 states and 571 transitions. Word has length 454 [2019-05-23 11:24:53,894 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:53,894 INFO L146 ILogger]: Abstraction has 546 states and 571 transitions. [2019-05-23 11:24:53,895 INFO L146 ILogger]: Interpolant automaton has 45 states. [2019-05-23 11:24:53,895 INFO L146 ILogger]: Start isEmpty. Operand 546 states and 571 transitions. [2019-05-23 11:24:53,897 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 462 [2019-05-23 11:24:53,897 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:53,898 INFO L146 ILogger]: trace histogram [21, 21, 21, 21, 21, 21, 21, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:53,898 INFO L146 ILogger]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:53,898 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:53,898 INFO L146 ILogger]: Analyzing trace with hash -654245152, now seen corresponding path program 20 times [2019-05-23 11:24:53,899 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:53,899 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:53,899 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:53,899 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:53,900 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:53,939 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:55,438 INFO L146 ILogger]: Checked inductivity of 2253 backedges. 0 proven. 1491 refuted. 0 times theorem prover too weak. 762 trivial. 0 not checked. [2019-05-23 11:24:55,438 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:55,438 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 11:24:55,447 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:24:55,549 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:24:55,549 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:55,551 INFO L146 ILogger]: Trace formula consists of 702 conjuncts, 44 conjunts are in the unsatisfiable core [2019-05-23 11:24:55,554 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:55,689 INFO L146 ILogger]: Checked inductivity of 2253 backedges. 0 proven. 1491 refuted. 0 times theorem prover too weak. 762 trivial. 0 not checked. [2019-05-23 11:24:55,708 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:55,708 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 47 [2019-05-23 11:24:55,709 INFO L146 ILogger]: Interpolant automaton has 47 states [2019-05-23 11:24:55,709 INFO L146 ILogger]: Constructing interpolant automaton starting with 47 interpolants. [2019-05-23 11:24:55,710 INFO L146 ILogger]: CoverageRelationStatistics Valid=575, Invalid=1587, Unknown=0, NotChecked=0, Total=2162 [2019-05-23 11:24:55,710 INFO L146 ILogger]: Start difference. First operand 546 states and 571 transitions. Second operand 47 states. [2019-05-23 11:24:57,060 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:57,061 INFO L146 ILogger]: Finished difference Result 946 states and 996 transitions. [2019-05-23 11:24:57,061 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2019-05-23 11:24:57,061 INFO L146 ILogger]: Start accepts. Automaton has 47 states. Word has length 461 [2019-05-23 11:24:57,061 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:57,063 INFO L146 ILogger]: With dead ends: 946 [2019-05-23 11:24:57,063 INFO L146 ILogger]: Without dead ends: 558 [2019-05-23 11:24:57,064 INFO L146 ILogger]: 0 DeclaredPredicates, 547 GetRequests, 460 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1479 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2468, Invalid=5364, Unknown=0, NotChecked=0, Total=7832 [2019-05-23 11:24:57,064 INFO L146 ILogger]: Start minimizeSevpa. Operand 558 states. [2019-05-23 11:24:57,071 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 558 to 553. [2019-05-23 11:24:57,071 INFO L146 ILogger]: Start removeUnreachable. Operand 553 states. [2019-05-23 11:24:57,072 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 553 states to 553 states and 578 transitions. [2019-05-23 11:24:57,073 INFO L146 ILogger]: Start accepts. Automaton has 553 states and 578 transitions. Word has length 461 [2019-05-23 11:24:57,073 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:57,073 INFO L146 ILogger]: Abstraction has 553 states and 578 transitions. [2019-05-23 11:24:57,073 INFO L146 ILogger]: Interpolant automaton has 47 states. [2019-05-23 11:24:57,073 INFO L146 ILogger]: Start isEmpty. Operand 553 states and 578 transitions. [2019-05-23 11:24:57,076 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 469 [2019-05-23 11:24:57,076 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:57,076 INFO L146 ILogger]: trace histogram [22, 22, 22, 22, 22, 22, 22, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:57,077 INFO L146 ILogger]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:57,077 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:57,077 INFO L146 ILogger]: Analyzing trace with hash -306819498, now seen corresponding path program 21 times [2019-05-23 11:24:57,077 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:57,077 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:57,078 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:57,078 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:57,078 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:57,119 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:57,973 INFO L146 ILogger]: Checked inductivity of 2401 backedges. 0 proven. 1639 refuted. 0 times theorem prover too weak. 762 trivial. 0 not checked. [2019-05-23 11:24:57,973 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:57,973 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 11:24:57,982 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:24:58,164 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2019-05-23 11:24:58,164 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:58,167 INFO L146 ILogger]: Trace formula consists of 507 conjuncts, 26 conjunts are in the unsatisfiable core [2019-05-23 11:24:58,172 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:58,740 INFO L146 ILogger]: Checked inductivity of 2401 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 2290 trivial. 0 not checked. [2019-05-23 11:24:58,760 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:58,761 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 15] total 60 [2019-05-23 11:24:58,761 INFO L146 ILogger]: Interpolant automaton has 60 states [2019-05-23 11:24:58,762 INFO L146 ILogger]: Constructing interpolant automaton starting with 60 interpolants. [2019-05-23 11:24:58,762 INFO L146 ILogger]: CoverageRelationStatistics Valid=637, Invalid=2903, Unknown=0, NotChecked=0, Total=3540 [2019-05-23 11:24:58,762 INFO L146 ILogger]: Start difference. First operand 553 states and 578 transitions. Second operand 60 states. [2019-05-23 11:25:00,730 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:00,730 INFO L146 ILogger]: Finished difference Result 965 states and 1016 transitions. [2019-05-23 11:25:00,730 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2019-05-23 11:25:00,730 INFO L146 ILogger]: Start accepts. Automaton has 60 states. Word has length 468 [2019-05-23 11:25:00,731 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:00,733 INFO L146 ILogger]: With dead ends: 965 [2019-05-23 11:25:00,733 INFO L146 ILogger]: Without dead ends: 577 [2019-05-23 11:25:00,735 INFO L146 ILogger]: 0 DeclaredPredicates, 570 GetRequests, 456 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2591 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2885, Invalid=10455, Unknown=0, NotChecked=0, Total=13340 [2019-05-23 11:25:00,735 INFO L146 ILogger]: Start minimizeSevpa. Operand 577 states. [2019-05-23 11:25:00,741 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 577 to 567. [2019-05-23 11:25:00,741 INFO L146 ILogger]: Start removeUnreachable. Operand 567 states. [2019-05-23 11:25:00,742 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 567 states to 567 states and 592 transitions. [2019-05-23 11:25:00,743 INFO L146 ILogger]: Start accepts. Automaton has 567 states and 592 transitions. Word has length 468 [2019-05-23 11:25:00,743 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:00,743 INFO L146 ILogger]: Abstraction has 567 states and 592 transitions. [2019-05-23 11:25:00,743 INFO L146 ILogger]: Interpolant automaton has 60 states. [2019-05-23 11:25:00,743 INFO L146 ILogger]: Start isEmpty. Operand 567 states and 592 transitions. [2019-05-23 11:25:00,746 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 483 [2019-05-23 11:25:00,746 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:00,747 INFO L146 ILogger]: trace histogram [23, 23, 23, 23, 23, 23, 23, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:00,747 INFO L146 ILogger]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:00,747 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:00,747 INFO L146 ILogger]: Analyzing trace with hash -1238389873, now seen corresponding path program 22 times [2019-05-23 11:25:00,747 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:00,747 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:00,748 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:00,748 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:25:00,748 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:00,789 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:01,759 INFO L146 ILogger]: Checked inductivity of 2599 backedges. 0 proven. 1794 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2019-05-23 11:25:01,759 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:01,759 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:25:01,768 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:25:02,392 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:25:02,392 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:02,397 INFO L146 ILogger]: Trace formula consists of 732 conjuncts, 48 conjunts are in the unsatisfiable core [2019-05-23 11:25:02,400 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:02,569 INFO L146 ILogger]: Checked inductivity of 2599 backedges. 0 proven. 1794 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2019-05-23 11:25:02,589 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:02,589 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 51 [2019-05-23 11:25:02,590 INFO L146 ILogger]: Interpolant automaton has 51 states [2019-05-23 11:25:02,590 INFO L146 ILogger]: Constructing interpolant automaton starting with 51 interpolants. [2019-05-23 11:25:02,590 INFO L146 ILogger]: CoverageRelationStatistics Valid=675, Invalid=1875, Unknown=0, NotChecked=0, Total=2550 [2019-05-23 11:25:02,591 INFO L146 ILogger]: Start difference. First operand 567 states and 592 transitions. Second operand 51 states. [2019-05-23 11:25:03,926 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:03,927 INFO L146 ILogger]: Finished difference Result 974 states and 1024 transitions. [2019-05-23 11:25:03,927 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2019-05-23 11:25:03,927 INFO L146 ILogger]: Start accepts. Automaton has 51 states. Word has length 482 [2019-05-23 11:25:03,927 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:03,929 INFO L146 ILogger]: With dead ends: 974 [2019-05-23 11:25:03,929 INFO L146 ILogger]: Without dead ends: 579 [2019-05-23 11:25:03,930 INFO L146 ILogger]: 0 DeclaredPredicates, 576 GetRequests, 481 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1759 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2932, Invalid=6380, Unknown=0, NotChecked=0, Total=9312 [2019-05-23 11:25:03,931 INFO L146 ILogger]: Start minimizeSevpa. Operand 579 states. [2019-05-23 11:25:03,938 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 579 to 574. [2019-05-23 11:25:03,938 INFO L146 ILogger]: Start removeUnreachable. Operand 574 states. [2019-05-23 11:25:03,939 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 574 states to 574 states and 599 transitions. [2019-05-23 11:25:03,939 INFO L146 ILogger]: Start accepts. Automaton has 574 states and 599 transitions. Word has length 482 [2019-05-23 11:25:03,939 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:03,940 INFO L146 ILogger]: Abstraction has 574 states and 599 transitions. [2019-05-23 11:25:03,940 INFO L146 ILogger]: Interpolant automaton has 51 states. [2019-05-23 11:25:03,940 INFO L146 ILogger]: Start isEmpty. Operand 574 states and 599 transitions. [2019-05-23 11:25:03,943 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 490 [2019-05-23 11:25:03,943 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:03,943 INFO L146 ILogger]: trace histogram [24, 24, 24, 24, 24, 24, 24, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:03,943 INFO L146 ILogger]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:03,944 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:03,944 INFO L146 ILogger]: Analyzing trace with hash 1139492313, now seen corresponding path program 23 times [2019-05-23 11:25:03,944 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:03,944 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:03,945 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:03,945 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:25:03,945 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:03,992 INFO L146 ILogger]: Conjunction of SSA is unsat