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/sum10_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:24:13,369 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:24:13,371 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:24:13,383 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:24:13,383 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:24:13,384 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:24:13,388 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:24:13,390 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:24:13,391 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:24:13,392 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:24:13,393 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:24:13,394 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:24:13,395 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:24:13,396 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:24:13,397 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:24:13,398 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:24:13,398 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:24:13,401 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:24:13,404 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:24:13,412 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:24:13,413 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:24:13,415 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:24:13,417 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:24:13,417 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:24:13,418 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:24:13,419 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:24:13,419 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:24:13,420 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:24:13,420 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:24:13,421 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:24:13,422 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:24:13,423 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:24:13,424 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:24:13,424 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:24:13,425 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:24:13,425 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:24:13,425 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:24:13,426 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:24:13,427 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:24:13,427 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:24:13,453 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:24:13,455 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:24:13,457 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:24:13,457 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:24:13,457 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:24:13,457 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:24:13,458 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:24:13,458 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:24:13,458 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:24:13,458 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:24:13,459 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:24:13,459 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:24:13,459 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:24:13,459 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:24:13,459 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:24:13,459 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:24:13,460 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:24:13,460 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:24:13,460 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:24:13,460 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:24:13,460 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:24:13,462 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:24:13,462 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:24:13,462 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:24:13,463 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:24:13,463 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:24:13,463 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:24:13,463 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:24:13,464 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 11:24:13,510 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:24:13,527 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:24:13,533 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:24:13,535 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:24:13,535 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:24:13,536 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/reducercommutativity/sum10_true-unreach-call_true-termination.i [2019-05-23 11:24:13,598 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b19ce1dfc/3185b1f8cb604d0c8851e170935aafb7/FLAGe75b81c62 [2019-05-23 11:24:14,009 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:24:14,009 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/reducercommutativity/sum10_true-unreach-call_true-termination.i [2019-05-23 11:24:14,016 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b19ce1dfc/3185b1f8cb604d0c8851e170935aafb7/FLAGe75b81c62 [2019-05-23 11:24:14,389 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b19ce1dfc/3185b1f8cb604d0c8851e170935aafb7 [2019-05-23 11:24:14,399 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:24:14,401 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:24:14,402 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:24:14,402 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:24:14,405 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:24:14,406 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:24:14" (1/1) ... [2019-05-23 11:24:14,409 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@576e02f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:14, skipping insertion in model container [2019-05-23 11:24:14,409 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:24:14" (1/1) ... [2019-05-23 11:24:14,417 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:24:14,438 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:24:14,683 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:24:14,696 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:24:14,741 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:24:14,763 INFO L146 ILogger]: Completed translation [2019-05-23 11:24:14,763 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:14 WrapperNode [2019-05-23 11:24:14,763 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:24:14,764 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:24:14,765 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:24:14,765 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:24:14,775 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:14" (1/1) ... [2019-05-23 11:24:14,788 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:14" (1/1) ... [2019-05-23 11:24:14,822 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:24:14,822 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:24:14,826 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:24:14,827 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:24:14,835 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:14" (1/1) ... [2019-05-23 11:24:14,836 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:14" (1/1) ... [2019-05-23 11:24:14,838 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:14" (1/1) ... [2019-05-23 11:24:14,839 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:14" (1/1) ... [2019-05-23 11:24:14,846 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:14" (1/1) ... [2019-05-23 11:24:14,947 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:14" (1/1) ... [2019-05-23 11:24:14,948 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:14" (1/1) ... [2019-05-23 11:24:14,954 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:24:14,955 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:24:14,955 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:24:14,955 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:24:14,956 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:14" (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 11:24:15,007 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:24:15,007 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:24:15,007 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:24:15,007 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:24:15,007 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:24:15,007 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:24:15,611 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:24:15,611 INFO L146 ILogger]: Removed 15 assume(true) statements. [2019-05-23 11:24:15,613 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:24:15 BoogieIcfgContainer [2019-05-23 11:24:15,613 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:24:15,614 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:24:15,614 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:24:15,617 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:24:15,617 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:24:14" (1/3) ... [2019-05-23 11:24:15,618 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e130f07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:24:15, skipping insertion in model container [2019-05-23 11:24:15,618 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:14" (2/3) ... [2019-05-23 11:24:15,619 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e130f07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:24:15, skipping insertion in model container [2019-05-23 11:24:15,619 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:24:15" (3/3) ... [2019-05-23 11:24:15,621 INFO L146 ILogger]: Analyzing ICFG sum10_true-unreach-call_true-termination.i [2019-05-23 11:24:15,630 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:24:15,637 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:24:15,653 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:24:15,685 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:24:15,686 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:24:15,686 INFO L146 ILogger]: Hoare is true [2019-05-23 11:24:15,686 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:24:15,686 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:24:15,686 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:24:15,686 INFO L146 ILogger]: Difference is false [2019-05-23 11:24:15,686 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:24:15,687 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:24:15,703 INFO L146 ILogger]: Start isEmpty. Operand 105 states. [2019-05-23 11:24:15,712 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 69 [2019-05-23 11:24:15,712 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:15,713 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] [2019-05-23 11:24:15,716 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:15,720 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:15,720 INFO L146 ILogger]: Analyzing trace with hash -503519154, now seen corresponding path program 1 times [2019-05-23 11:24:15,722 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:15,722 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:15,765 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:15,765 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:15,766 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:15,810 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:15,921 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 11:24:15,923 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:24:15,924 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:24:15,928 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:24:15,940 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:24:15,941 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:24:15,944 INFO L146 ILogger]: Start difference. First operand 105 states. Second operand 3 states. [2019-05-23 11:24:16,022 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:16,023 INFO L146 ILogger]: Finished difference Result 199 states and 219 transitions. [2019-05-23 11:24:16,023 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:24:16,025 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 68 [2019-05-23 11:24:16,025 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:16,037 INFO L146 ILogger]: With dead ends: 199 [2019-05-23 11:24:16,037 INFO L146 ILogger]: Without dead ends: 105 [2019-05-23 11:24:16,041 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 11:24:16,059 INFO L146 ILogger]: Start minimizeSevpa. Operand 105 states. [2019-05-23 11:24:16,081 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 105 to 100. [2019-05-23 11:24:16,083 INFO L146 ILogger]: Start removeUnreachable. Operand 100 states. [2019-05-23 11:24:16,085 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 100 states to 100 states and 104 transitions. [2019-05-23 11:24:16,087 INFO L146 ILogger]: Start accepts. Automaton has 100 states and 104 transitions. Word has length 68 [2019-05-23 11:24:16,087 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:16,087 INFO L146 ILogger]: Abstraction has 100 states and 104 transitions. [2019-05-23 11:24:16,088 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:24:16,088 INFO L146 ILogger]: Start isEmpty. Operand 100 states and 104 transitions. [2019-05-23 11:24:16,090 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 76 [2019-05-23 11:24:16,091 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:16,091 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, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:16,091 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:16,092 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:16,092 INFO L146 ILogger]: Analyzing trace with hash -1483383517, now seen corresponding path program 1 times [2019-05-23 11:24:16,092 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:16,092 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:16,093 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:16,094 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:16,094 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:16,118 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:16,248 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 11:24:16,249 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:16,249 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 11:24:16,269 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:16,351 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:16,353 INFO L146 ILogger]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2019-05-23 11:24:16,364 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:16,420 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 11:24:16,451 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:24:16,451 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-05-23 11:24:16,453 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:24:16,453 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:24:16,454 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:24:16,454 INFO L146 ILogger]: Start difference. First operand 100 states and 104 transitions. Second operand 6 states. [2019-05-23 11:24:16,904 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:16,904 INFO L146 ILogger]: Finished difference Result 212 states and 223 transitions. [2019-05-23 11:24:16,906 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:24:16,906 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 75 [2019-05-23 11:24:16,907 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:16,908 INFO L146 ILogger]: With dead ends: 212 [2019-05-23 11:24:16,908 INFO L146 ILogger]: Without dead ends: 130 [2019-05-23 11:24:16,912 INFO L146 ILogger]: 0 DeclaredPredicates, 81 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:24:16,912 INFO L146 ILogger]: Start minimizeSevpa. Operand 130 states. [2019-05-23 11:24:16,926 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 130 to 110. [2019-05-23 11:24:16,936 INFO L146 ILogger]: Start removeUnreachable. Operand 110 states. [2019-05-23 11:24:16,938 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 110 states to 110 states and 114 transitions. [2019-05-23 11:24:16,939 INFO L146 ILogger]: Start accepts. Automaton has 110 states and 114 transitions. Word has length 75 [2019-05-23 11:24:16,939 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:16,939 INFO L146 ILogger]: Abstraction has 110 states and 114 transitions. [2019-05-23 11:24:16,939 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:24:16,939 INFO L146 ILogger]: Start isEmpty. Operand 110 states and 114 transitions. [2019-05-23 11:24:16,942 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 104 [2019-05-23 11:24:16,942 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:16,942 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] [2019-05-23 11:24:16,943 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:16,943 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:16,943 INFO L146 ILogger]: Analyzing trace with hash -483601032, now seen corresponding path program 1 times [2019-05-23 11:24:16,944 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:16,944 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:16,948 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:16,948 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:16,948 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:16,974 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:17,090 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 11:24:17,091 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:17,091 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 11:24:17,108 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:17,154 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:17,155 INFO L146 ILogger]: Trace formula consists of 176 conjuncts, 2 conjunts are in the unsatisfiable core [2019-05-23 11:24:17,160 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:17,222 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 11:24:17,241 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:24:17,241 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-05-23 11:24:17,242 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:24:17,242 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:24:17,243 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:24:17,244 INFO L146 ILogger]: Start difference. First operand 110 states and 114 transitions. Second operand 6 states. [2019-05-23 11:24:17,744 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:17,745 INFO L146 ILogger]: Finished difference Result 221 states and 231 transitions. [2019-05-23 11:24:17,745 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:24:17,746 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 103 [2019-05-23 11:24:17,747 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:17,748 INFO L146 ILogger]: With dead ends: 221 [2019-05-23 11:24:17,749 INFO L146 ILogger]: Without dead ends: 152 [2019-05-23 11:24:17,750 INFO L146 ILogger]: 0 DeclaredPredicates, 111 GetRequests, 105 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 11:24:17,750 INFO L146 ILogger]: Start minimizeSevpa. Operand 152 states. [2019-05-23 11:24:17,759 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 152 to 132. [2019-05-23 11:24:17,759 INFO L146 ILogger]: Start removeUnreachable. Operand 132 states. [2019-05-23 11:24:17,760 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 132 states to 132 states and 136 transitions. [2019-05-23 11:24:17,761 INFO L146 ILogger]: Start accepts. Automaton has 132 states and 136 transitions. Word has length 103 [2019-05-23 11:24:17,761 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:17,761 INFO L146 ILogger]: Abstraction has 132 states and 136 transitions. [2019-05-23 11:24:17,761 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:24:17,761 INFO L146 ILogger]: Start isEmpty. Operand 132 states and 136 transitions. [2019-05-23 11:24:17,765 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 132 [2019-05-23 11:24:17,765 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:17,766 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:17,766 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:17,766 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:17,766 INFO L146 ILogger]: Analyzing trace with hash 46998236, now seen corresponding path program 1 times [2019-05-23 11:24:17,766 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:17,767 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:17,768 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:17,768 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:17,768 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:17,800 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:17,904 INFO L146 ILogger]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:24:17,904 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:17,904 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 11:24:17,922 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:17,984 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:17,986 INFO L146 ILogger]: Trace formula consists of 219 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:24:17,991 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:18,171 INFO L146 ILogger]: Checked inductivity of 37 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-05-23 11:24:18,189 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:18,189 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2019-05-23 11:24:18,190 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:24:18,190 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:24:18,191 INFO L146 ILogger]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:24:18,191 INFO L146 ILogger]: Start difference. First operand 132 states and 136 transitions. Second operand 10 states. [2019-05-23 11:24:18,758 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:18,758 INFO L146 ILogger]: Finished difference Result 263 states and 272 transitions. [2019-05-23 11:24:18,758 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:24:18,759 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 131 [2019-05-23 11:24:18,759 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:18,760 INFO L146 ILogger]: With dead ends: 263 [2019-05-23 11:24:18,760 INFO L146 ILogger]: Without dead ends: 156 [2019-05-23 11:24:18,763 INFO L146 ILogger]: 0 DeclaredPredicates, 141 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:24:18,764 INFO L146 ILogger]: Start minimizeSevpa. Operand 156 states. [2019-05-23 11:24:18,777 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 156 to 146. [2019-05-23 11:24:18,777 INFO L146 ILogger]: Start removeUnreachable. Operand 146 states. [2019-05-23 11:24:18,784 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 146 states to 146 states and 150 transitions. [2019-05-23 11:24:18,784 INFO L146 ILogger]: Start accepts. Automaton has 146 states and 150 transitions. Word has length 131 [2019-05-23 11:24:18,784 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:18,784 INFO L146 ILogger]: Abstraction has 146 states and 150 transitions. [2019-05-23 11:24:18,785 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:24:18,785 INFO L146 ILogger]: Start isEmpty. Operand 146 states and 150 transitions. [2019-05-23 11:24:18,791 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 146 [2019-05-23 11:24:18,792 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:18,792 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:18,792 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:18,792 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:18,793 INFO L146 ILogger]: Analyzing trace with hash -1200733213, now seen corresponding path program 2 times [2019-05-23 11:24:18,794 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:18,795 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:18,795 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:18,796 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:18,796 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:18,847 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:19,388 INFO L146 ILogger]: Checked inductivity of 60 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:24:19,388 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:19,389 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 11:24:19,397 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:24:19,457 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:24:19,457 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:19,459 INFO L146 ILogger]: Trace formula consists of 239 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:24:19,471 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:19,651 INFO L146 ILogger]: Checked inductivity of 60 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:24:19,670 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:19,670 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2019-05-23 11:24:19,671 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:24:19,671 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:24:19,671 INFO L146 ILogger]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:24:19,671 INFO L146 ILogger]: Start difference. First operand 146 states and 150 transitions. Second operand 11 states. [2019-05-23 11:24:19,849 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:19,850 INFO L146 ILogger]: Finished difference Result 272 states and 280 transitions. [2019-05-23 11:24:19,852 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:24:19,852 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 145 [2019-05-23 11:24:19,852 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:19,853 INFO L146 ILogger]: With dead ends: 272 [2019-05-23 11:24:19,853 INFO L146 ILogger]: Without dead ends: 158 [2019-05-23 11:24:19,854 INFO L146 ILogger]: 0 DeclaredPredicates, 159 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:24:19,855 INFO L146 ILogger]: Start minimizeSevpa. Operand 158 states. [2019-05-23 11:24:19,862 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 158 to 153. [2019-05-23 11:24:19,862 INFO L146 ILogger]: Start removeUnreachable. Operand 153 states. [2019-05-23 11:24:19,863 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 153 states to 153 states and 157 transitions. [2019-05-23 11:24:19,863 INFO L146 ILogger]: Start accepts. Automaton has 153 states and 157 transitions. Word has length 145 [2019-05-23 11:24:19,864 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:19,864 INFO L146 ILogger]: Abstraction has 153 states and 157 transitions. [2019-05-23 11:24:19,864 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:24:19,864 INFO L146 ILogger]: Start isEmpty. Operand 153 states and 157 transitions. [2019-05-23 11:24:19,868 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 153 [2019-05-23 11:24:19,868 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:19,868 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2019-05-23 11:24:19,868 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:19,869 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:19,869 INFO L146 ILogger]: Analyzing trace with hash 104748121, now seen corresponding path program 3 times [2019-05-23 11:24:19,869 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:19,869 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:19,870 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:19,870 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:19,870 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:19,896 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:20,056 INFO L146 ILogger]: Checked inductivity of 82 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:24:20,056 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:20,056 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 11:24:20,064 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:24:20,107 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:24:20,107 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:20,108 INFO L146 ILogger]: Trace formula consists of 229 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:24:20,112 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:20,226 INFO L146 ILogger]: Checked inductivity of 82 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-05-23 11:24:20,247 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:20,247 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2019-05-23 11:24:20,247 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:24:20,248 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:24:20,249 INFO L146 ILogger]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:24:20,249 INFO L146 ILogger]: Start difference. First operand 153 states and 157 transitions. Second operand 16 states. [2019-05-23 11:24:20,724 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:20,725 INFO L146 ILogger]: Finished difference Result 315 states and 326 transitions. [2019-05-23 11:24:20,726 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-05-23 11:24:20,726 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 152 [2019-05-23 11:24:20,727 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:20,728 INFO L146 ILogger]: With dead ends: 315 [2019-05-23 11:24:20,728 INFO L146 ILogger]: Without dead ends: 201 [2019-05-23 11:24:20,729 INFO L146 ILogger]: 0 DeclaredPredicates, 178 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=591, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:24:20,730 INFO L146 ILogger]: Start minimizeSevpa. Operand 201 states. [2019-05-23 11:24:20,736 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 201 to 181. [2019-05-23 11:24:20,737 INFO L146 ILogger]: Start removeUnreachable. Operand 181 states. [2019-05-23 11:24:20,737 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 181 states to 181 states and 185 transitions. [2019-05-23 11:24:20,738 INFO L146 ILogger]: Start accepts. Automaton has 181 states and 185 transitions. Word has length 152 [2019-05-23 11:24:20,738 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:20,738 INFO L146 ILogger]: Abstraction has 181 states and 185 transitions. [2019-05-23 11:24:20,738 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:24:20,738 INFO L146 ILogger]: Start isEmpty. Operand 181 states and 185 transitions. [2019-05-23 11:24:20,741 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 181 [2019-05-23 11:24:20,741 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:20,741 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, 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] [2019-05-23 11:24:20,741 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:20,742 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:20,742 INFO L146 ILogger]: Analyzing trace with hash -9292050, now seen corresponding path program 4 times [2019-05-23 11:24:20,742 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:20,742 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:20,743 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:20,743 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:20,743 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:20,768 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:21,039 INFO L146 ILogger]: Checked inductivity of 156 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:24:21,040 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:21,040 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 11:24:21,052 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:24:21,105 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:24:21,105 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:21,106 INFO L146 ILogger]: Trace formula consists of 261 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:24:21,110 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:21,183 INFO L146 ILogger]: Checked inductivity of 156 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:24:21,219 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:21,219 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2019-05-23 11:24:21,220 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:24:21,220 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:24:21,220 INFO L146 ILogger]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:24:21,221 INFO L146 ILogger]: Start difference. First operand 181 states and 185 transitions. Second operand 15 states. [2019-05-23 11:24:21,472 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:21,473 INFO L146 ILogger]: Finished difference Result 328 states and 336 transitions. [2019-05-23 11:24:21,476 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:24:21,476 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 180 [2019-05-23 11:24:21,476 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:21,477 INFO L146 ILogger]: With dead ends: 328 [2019-05-23 11:24:21,478 INFO L146 ILogger]: Without dead ends: 193 [2019-05-23 11:24:21,478 INFO L146 ILogger]: 0 DeclaredPredicates, 202 GetRequests, 179 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 11:24:21,479 INFO L146 ILogger]: Start minimizeSevpa. Operand 193 states. [2019-05-23 11:24:21,484 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 193 to 188. [2019-05-23 11:24:21,484 INFO L146 ILogger]: Start removeUnreachable. Operand 188 states. [2019-05-23 11:24:21,485 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 188 states to 188 states and 192 transitions. [2019-05-23 11:24:21,485 INFO L146 ILogger]: Start accepts. Automaton has 188 states and 192 transitions. Word has length 180 [2019-05-23 11:24:21,485 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:21,486 INFO L146 ILogger]: Abstraction has 188 states and 192 transitions. [2019-05-23 11:24:21,486 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:24:21,486 INFO L146 ILogger]: Start isEmpty. Operand 188 states and 192 transitions. [2019-05-23 11:24:21,488 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 188 [2019-05-23 11:24:21,488 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:21,489 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, 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] [2019-05-23 11:24:21,489 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:21,489 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:21,489 INFO L146 ILogger]: Analyzing trace with hash -397663560, now seen corresponding path program 5 times [2019-05-23 11:24:21,489 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:21,490 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:21,490 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:21,490 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:21,491 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:21,515 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:21,834 INFO L146 ILogger]: Checked inductivity of 192 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:24:21,834 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:21,834 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 11:24:21,845 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:24:21,940 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-05-23 11:24:21,940 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:21,941 INFO L146 ILogger]: Trace formula consists of 302 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:24:21,944 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:22,061 INFO L146 ILogger]: Checked inductivity of 192 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2019-05-23 11:24:22,080 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:22,081 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 22 [2019-05-23 11:24:22,081 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:24:22,081 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:24:22,082 INFO L146 ILogger]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:24:22,082 INFO L146 ILogger]: Start difference. First operand 188 states and 192 transitions. Second operand 22 states. [2019-05-23 11:24:22,926 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:22,926 INFO L146 ILogger]: Finished difference Result 371 states and 382 transitions. [2019-05-23 11:24:22,926 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:24:22,927 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 187 [2019-05-23 11:24:22,927 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:22,929 INFO L146 ILogger]: With dead ends: 371 [2019-05-23 11:24:22,929 INFO L146 ILogger]: Without dead ends: 236 [2019-05-23 11:24:22,931 INFO L146 ILogger]: 0 DeclaredPredicates, 219 GetRequests, 181 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 11:24:22,932 INFO L146 ILogger]: Start minimizeSevpa. Operand 236 states. [2019-05-23 11:24:22,937 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 236 to 216. [2019-05-23 11:24:22,937 INFO L146 ILogger]: Start removeUnreachable. Operand 216 states. [2019-05-23 11:24:22,938 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 216 states to 216 states and 220 transitions. [2019-05-23 11:24:22,938 INFO L146 ILogger]: Start accepts. Automaton has 216 states and 220 transitions. Word has length 187 [2019-05-23 11:24:22,938 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:22,939 INFO L146 ILogger]: Abstraction has 216 states and 220 transitions. [2019-05-23 11:24:22,939 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:24:22,939 INFO L146 ILogger]: Start isEmpty. Operand 216 states and 220 transitions. [2019-05-23 11:24:22,941 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 216 [2019-05-23 11:24:22,941 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:22,942 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, 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] [2019-05-23 11:24:22,942 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:22,942 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:22,942 INFO L146 ILogger]: Analyzing trace with hash 1152254147, now seen corresponding path program 6 times [2019-05-23 11:24:22,943 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:22,943 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:22,943 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:22,944 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:22,944 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:22,970 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:23,217 INFO L146 ILogger]: Checked inductivity of 301 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2019-05-23 11:24:23,217 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:23,217 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 11:24:23,226 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:24:23,300 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-05-23 11:24:23,301 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:23,302 INFO L146 ILogger]: Trace formula consists of 249 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:24:23,304 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:23,504 INFO L146 ILogger]: Checked inductivity of 301 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2019-05-23 11:24:23,534 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:23,534 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 7] total 22 [2019-05-23 11:24:23,535 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:24:23,535 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:24:23,536 INFO L146 ILogger]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:24:23,536 INFO L146 ILogger]: Start difference. First operand 216 states and 220 transitions. Second operand 22 states. [2019-05-23 11:24:24,098 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:24,098 INFO L146 ILogger]: Finished difference Result 396 states and 405 transitions. [2019-05-23 11:24:24,099 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:24:24,099 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 215 [2019-05-23 11:24:24,099 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:24,101 INFO L146 ILogger]: With dead ends: 396 [2019-05-23 11:24:24,101 INFO L146 ILogger]: Without dead ends: 240 [2019-05-23 11:24:24,102 INFO L146 ILogger]: 0 DeclaredPredicates, 249 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=360, Invalid=1200, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:24:24,102 INFO L146 ILogger]: Start minimizeSevpa. Operand 240 states. [2019-05-23 11:24:24,107 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 240 to 230. [2019-05-23 11:24:24,108 INFO L146 ILogger]: Start removeUnreachable. Operand 230 states. [2019-05-23 11:24:24,109 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 230 states to 230 states and 234 transitions. [2019-05-23 11:24:24,109 INFO L146 ILogger]: Start accepts. Automaton has 230 states and 234 transitions. Word has length 215 [2019-05-23 11:24:24,109 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:24,109 INFO L146 ILogger]: Abstraction has 230 states and 234 transitions. [2019-05-23 11:24:24,110 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:24:24,110 INFO L146 ILogger]: Start isEmpty. Operand 230 states and 234 transitions. [2019-05-23 11:24:24,112 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 230 [2019-05-23 11:24:24,112 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:24,113 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, 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, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:24,113 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:24,113 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:24,113 INFO L146 ILogger]: Analyzing trace with hash 1030812380, now seen corresponding path program 7 times [2019-05-23 11:24:24,113 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:24,114 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:24,114 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:24,115 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:24,115 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:24,142 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:24,407 INFO L146 ILogger]: Checked inductivity of 366 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2019-05-23 11:24:24,407 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:24,407 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 11:24:24,416 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:24,479 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:24,481 INFO L146 ILogger]: Trace formula consists of 365 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:24:24,485 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:24,685 INFO L146 ILogger]: Checked inductivity of 366 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2019-05-23 11:24:24,717 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:24,717 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-05-23 11:24:24,718 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:24:24,718 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:24:24,719 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:24:24,719 INFO L146 ILogger]: Start difference. First operand 230 states and 234 transitions. Second operand 21 states. [2019-05-23 11:24:25,470 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:25,470 INFO L146 ILogger]: Finished difference Result 405 states and 413 transitions. [2019-05-23 11:24:25,471 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:24:25,471 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 229 [2019-05-23 11:24:25,471 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:25,473 INFO L146 ILogger]: With dead ends: 405 [2019-05-23 11:24:25,474 INFO L146 ILogger]: Without dead ends: 242 [2019-05-23 11:24:25,475 INFO L146 ILogger]: 0 DeclaredPredicates, 263 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:24:25,475 INFO L146 ILogger]: Start minimizeSevpa. Operand 242 states. [2019-05-23 11:24:25,480 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 242 to 237. [2019-05-23 11:24:25,480 INFO L146 ILogger]: Start removeUnreachable. Operand 237 states. [2019-05-23 11:24:25,481 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 237 states to 237 states and 241 transitions. [2019-05-23 11:24:25,482 INFO L146 ILogger]: Start accepts. Automaton has 237 states and 241 transitions. Word has length 229 [2019-05-23 11:24:25,482 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:25,482 INFO L146 ILogger]: Abstraction has 237 states and 241 transitions. [2019-05-23 11:24:25,482 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:24:25,482 INFO L146 ILogger]: Start isEmpty. Operand 237 states and 241 transitions. [2019-05-23 11:24:25,485 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 237 [2019-05-23 11:24:25,486 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:25,486 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, 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, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:25,486 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:25,486 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:25,487 INFO L146 ILogger]: Analyzing trace with hash -1860993966, now seen corresponding path program 8 times [2019-05-23 11:24:25,487 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:25,487 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:25,488 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:25,488 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:25,489 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:25,517 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:25,885 INFO L146 ILogger]: Checked inductivity of 423 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2019-05-23 11:24:25,885 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:25,885 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 11:24:25,894 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:24:25,974 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:24:25,974 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:25,976 INFO L146 ILogger]: Trace formula consists of 375 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:24:25,980 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:26,145 INFO L146 ILogger]: Checked inductivity of 423 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2019-05-23 11:24:26,163 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:26,164 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2019-05-23 11:24:26,164 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:24:26,164 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:24:26,165 INFO L146 ILogger]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:24:26,165 INFO L146 ILogger]: Start difference. First operand 237 states and 241 transitions. Second operand 23 states. [2019-05-23 11:24:26,621 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:26,622 INFO L146 ILogger]: Finished difference Result 407 states and 415 transitions. [2019-05-23 11:24:26,628 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:24:26,628 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 236 [2019-05-23 11:24:26,629 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:26,630 INFO L146 ILogger]: With dead ends: 407 [2019-05-23 11:24:26,630 INFO L146 ILogger]: Without dead ends: 244 [2019-05-23 11:24:26,631 INFO L146 ILogger]: 0 DeclaredPredicates, 274 GetRequests, 235 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 11:24:26,632 INFO L146 ILogger]: Start minimizeSevpa. Operand 244 states. [2019-05-23 11:24:26,636 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 244 to 244. [2019-05-23 11:24:26,637 INFO L146 ILogger]: Start removeUnreachable. Operand 244 states. [2019-05-23 11:24:26,638 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 244 states to 244 states and 248 transitions. [2019-05-23 11:24:26,638 INFO L146 ILogger]: Start accepts. Automaton has 244 states and 248 transitions. Word has length 236 [2019-05-23 11:24:26,638 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:26,639 INFO L146 ILogger]: Abstraction has 244 states and 248 transitions. [2019-05-23 11:24:26,639 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:24:26,639 INFO L146 ILogger]: Start isEmpty. Operand 244 states and 248 transitions. [2019-05-23 11:24:26,641 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 244 [2019-05-23 11:24:26,641 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:26,641 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, 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, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:26,641 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:26,642 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:26,642 INFO L146 ILogger]: Analyzing trace with hash -1509981668, now seen corresponding path program 9 times [2019-05-23 11:24:26,642 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:26,642 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:26,643 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:26,643 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:26,643 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:26,687 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:26,875 INFO L146 ILogger]: Checked inductivity of 487 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2019-05-23 11:24:26,876 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:26,876 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 11:24:26,884 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:24:26,961 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:24:26,961 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:26,962 INFO L146 ILogger]: Trace formula consists of 282 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:24:26,966 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:27,065 INFO L146 ILogger]: Checked inductivity of 487 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 463 trivial. 0 not checked. [2019-05-23 11:24:27,084 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:27,084 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2019-05-23 11:24:27,085 INFO L146 ILogger]: Interpolant automaton has 18 states [2019-05-23 11:24:27,085 INFO L146 ILogger]: Constructing interpolant automaton starting with 18 interpolants. [2019-05-23 11:24:27,085 INFO L146 ILogger]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2019-05-23 11:24:27,085 INFO L146 ILogger]: Start difference. First operand 244 states and 248 transitions. Second operand 18 states. [2019-05-23 11:24:29,786 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:29,786 INFO L146 ILogger]: Finished difference Result 418 states and 428 transitions. [2019-05-23 11:24:29,787 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-05-23 11:24:29,787 INFO L146 ILogger]: Start accepts. Automaton has 18 states. Word has length 243 [2019-05-23 11:24:29,788 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:29,789 INFO L146 ILogger]: With dead ends: 418 [2019-05-23 11:24:29,789 INFO L146 ILogger]: Without dead ends: 292 [2019-05-23 11:24:29,790 INFO L146 ILogger]: 0 DeclaredPredicates, 275 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=200, Invalid=792, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:24:29,791 INFO L146 ILogger]: Start minimizeSevpa. Operand 292 states. [2019-05-23 11:24:29,797 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 292 to 272. [2019-05-23 11:24:29,797 INFO L146 ILogger]: Start removeUnreachable. Operand 272 states. [2019-05-23 11:24:29,798 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 272 states to 272 states and 276 transitions. [2019-05-23 11:24:29,798 INFO L146 ILogger]: Start accepts. Automaton has 272 states and 276 transitions. Word has length 243 [2019-05-23 11:24:29,798 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:29,799 INFO L146 ILogger]: Abstraction has 272 states and 276 transitions. [2019-05-23 11:24:29,799 INFO L146 ILogger]: Interpolant automaton has 18 states. [2019-05-23 11:24:29,799 INFO L146 ILogger]: Start isEmpty. Operand 272 states and 276 transitions. [2019-05-23 11:24:29,810 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 272 [2019-05-23 11:24:29,811 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:29,811 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:29,811 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:29,812 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:29,812 INFO L146 ILogger]: Analyzing trace with hash -1657040904, now seen corresponding path program 10 times [2019-05-23 11:24:29,812 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:29,813 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:29,813 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:29,814 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:29,814 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:29,852 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:30,405 INFO L146 ILogger]: Checked inductivity of 596 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 521 trivial. 0 not checked. [2019-05-23 11:24:30,405 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:30,405 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:24:30,415 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:24:30,468 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:24:30,468 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:30,469 INFO L146 ILogger]: Trace formula consists of 387 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:24:30,472 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:30,550 INFO L146 ILogger]: Checked inductivity of 596 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 521 trivial. 0 not checked. [2019-05-23 11:24:30,570 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:30,570 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2019-05-23 11:24:30,571 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:24:30,571 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:24:30,571 INFO L146 ILogger]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:24:30,572 INFO L146 ILogger]: Start difference. First operand 272 states and 276 transitions. Second operand 15 states. [2019-05-23 11:24:30,911 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:30,911 INFO L146 ILogger]: Finished difference Result 455 states and 464 transitions. [2019-05-23 11:24:30,911 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:24:30,912 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 271 [2019-05-23 11:24:30,912 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:30,914 INFO L146 ILogger]: With dead ends: 455 [2019-05-23 11:24:30,914 INFO L146 ILogger]: Without dead ends: 308 [2019-05-23 11:24:30,915 INFO L146 ILogger]: 0 DeclaredPredicates, 293 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:24:30,916 INFO L146 ILogger]: Start minimizeSevpa. Operand 308 states. [2019-05-23 11:24:30,920 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 308 to 293. [2019-05-23 11:24:30,921 INFO L146 ILogger]: Start removeUnreachable. Operand 293 states. [2019-05-23 11:24:30,922 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 293 states to 293 states and 297 transitions. [2019-05-23 11:24:30,922 INFO L146 ILogger]: Start accepts. Automaton has 293 states and 297 transitions. Word has length 271 [2019-05-23 11:24:30,922 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:30,922 INFO L146 ILogger]: Abstraction has 293 states and 297 transitions. [2019-05-23 11:24:30,922 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:24:30,922 INFO L146 ILogger]: Start isEmpty. Operand 293 states and 297 transitions. [2019-05-23 11:24:30,924 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 293 [2019-05-23 11:24:30,924 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:30,924 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:30,925 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:30,925 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:30,925 INFO L146 ILogger]: Analyzing trace with hash -50434311, now seen corresponding path program 11 times [2019-05-23 11:24:30,925 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:30,925 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:30,926 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:30,926 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:30,926 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:30,956 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:31,742 INFO L146 ILogger]: Checked inductivity of 704 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2019-05-23 11:24:31,742 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:31,742 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 11:24:31,751 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:24:32,112 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2019-05-23 11:24:32,112 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:32,114 INFO L146 ILogger]: Trace formula consists of 461 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:24:32,120 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:32,226 INFO L146 ILogger]: Checked inductivity of 704 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2019-05-23 11:24:32,245 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:32,245 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2019-05-23 11:24:32,245 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:24:32,246 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:24:32,246 INFO L146 ILogger]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:24:32,246 INFO L146 ILogger]: Start difference. First operand 293 states and 297 transitions. Second operand 17 states. [2019-05-23 11:24:32,634 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:32,635 INFO L146 ILogger]: Finished difference Result 490 states and 499 transitions. [2019-05-23 11:24:32,635 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:24:32,635 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 292 [2019-05-23 11:24:32,636 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:32,638 INFO L146 ILogger]: With dead ends: 490 [2019-05-23 11:24:32,639 INFO L146 ILogger]: Without dead ends: 329 [2019-05-23 11:24:32,640 INFO L146 ILogger]: 0 DeclaredPredicates, 330 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:24:32,640 INFO L146 ILogger]: Start minimizeSevpa. Operand 329 states. [2019-05-23 11:24:32,645 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 329 to 314. [2019-05-23 11:24:32,645 INFO L146 ILogger]: Start removeUnreachable. Operand 314 states. [2019-05-23 11:24:32,646 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 314 states to 314 states and 318 transitions. [2019-05-23 11:24:32,647 INFO L146 ILogger]: Start accepts. Automaton has 314 states and 318 transitions. Word has length 292 [2019-05-23 11:24:32,647 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:32,647 INFO L146 ILogger]: Abstraction has 314 states and 318 transitions. [2019-05-23 11:24:32,647 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:24:32,647 INFO L146 ILogger]: Start isEmpty. Operand 314 states and 318 transitions. [2019-05-23 11:24:32,649 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 314 [2019-05-23 11:24:32,649 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:32,650 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:32,650 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:32,650 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:32,650 INFO L146 ILogger]: Analyzing trace with hash 229895832, now seen corresponding path program 12 times [2019-05-23 11:24:32,651 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:32,651 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:32,652 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:32,652 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:32,652 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:32,678 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:33,526 INFO L146 ILogger]: Checked inductivity of 833 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 679 trivial. 0 not checked. [2019-05-23 11:24:33,527 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:33,527 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 11:24:33,535 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:24:33,800 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2019-05-23 11:24:33,800 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:33,802 INFO L146 ILogger]: Trace formula consists of 408 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:24:33,805 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:34,021 INFO L146 ILogger]: Checked inductivity of 833 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 787 trivial. 0 not checked. [2019-05-23 11:24:34,040 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:34,041 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11] total 26 [2019-05-23 11:24:34,041 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:24:34,042 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:24:34,042 INFO L146 ILogger]: CoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:24:34,042 INFO L146 ILogger]: Start difference. First operand 314 states and 318 transitions. Second operand 26 states. [2019-05-23 11:24:34,910 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:34,911 INFO L146 ILogger]: Finished difference Result 537 states and 547 transitions. [2019-05-23 11:24:34,911 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-05-23 11:24:34,911 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 313 [2019-05-23 11:24:34,912 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:34,914 INFO L146 ILogger]: With dead ends: 537 [2019-05-23 11:24:34,914 INFO L146 ILogger]: Without dead ends: 362 [2019-05-23 11:24:34,916 INFO L146 ILogger]: 0 DeclaredPredicates, 365 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=440, Invalid=1816, Unknown=0, NotChecked=0, Total=2256 [2019-05-23 11:24:34,917 INFO L146 ILogger]: Start minimizeSevpa. Operand 362 states. [2019-05-23 11:24:34,922 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 362 to 342. [2019-05-23 11:24:34,922 INFO L146 ILogger]: Start removeUnreachable. Operand 342 states. [2019-05-23 11:24:34,923 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 342 states to 342 states and 346 transitions. [2019-05-23 11:24:34,923 INFO L146 ILogger]: Start accepts. Automaton has 342 states and 346 transitions. Word has length 313 [2019-05-23 11:24:34,923 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:34,923 INFO L146 ILogger]: Abstraction has 342 states and 346 transitions. [2019-05-23 11:24:34,924 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:24:34,924 INFO L146 ILogger]: Start isEmpty. Operand 342 states and 346 transitions. [2019-05-23 11:24:34,925 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 342 [2019-05-23 11:24:34,926 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:34,926 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:34,926 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:34,926 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:34,927 INFO L146 ILogger]: Analyzing trace with hash -1319856836, now seen corresponding path program 13 times [2019-05-23 11:24:34,927 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:34,927 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:34,928 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:34,928 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:34,928 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:34,953 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:36,578 INFO L146 ILogger]: Checked inductivity of 1012 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 808 trivial. 0 not checked. [2019-05-23 11:24:36,578 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:36,578 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 11:24:36,597 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:36,675 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:36,676 INFO L146 ILogger]: Trace formula consists of 537 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:24:36,681 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:37,205 INFO L146 ILogger]: Checked inductivity of 1012 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 808 trivial. 0 not checked. [2019-05-23 11:24:37,246 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:37,247 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-05-23 11:24:37,247 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:24:37,248 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:24:37,248 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:24:37,249 INFO L146 ILogger]: Start difference. First operand 342 states and 346 transitions. Second operand 21 states. [2019-05-23 11:24:38,161 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:38,161 INFO L146 ILogger]: Finished difference Result 574 states and 583 transitions. [2019-05-23 11:24:38,161 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:24:38,161 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 341 [2019-05-23 11:24:38,162 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:38,164 INFO L146 ILogger]: With dead ends: 574 [2019-05-23 11:24:38,165 INFO L146 ILogger]: Without dead ends: 378 [2019-05-23 11:24:38,166 INFO L146 ILogger]: 0 DeclaredPredicates, 375 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:24:38,168 INFO L146 ILogger]: Start minimizeSevpa. Operand 378 states. [2019-05-23 11:24:38,174 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 378 to 363. [2019-05-23 11:24:38,174 INFO L146 ILogger]: Start removeUnreachable. Operand 363 states. [2019-05-23 11:24:38,175 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 363 states to 363 states and 367 transitions. [2019-05-23 11:24:38,175 INFO L146 ILogger]: Start accepts. Automaton has 363 states and 367 transitions. Word has length 341 [2019-05-23 11:24:38,175 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:38,176 INFO L146 ILogger]: Abstraction has 363 states and 367 transitions. [2019-05-23 11:24:38,176 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:24:38,176 INFO L146 ILogger]: Start isEmpty. Operand 363 states and 367 transitions. [2019-05-23 11:24:38,178 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 363 [2019-05-23 11:24:38,178 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:38,178 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:38,179 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:38,179 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:38,179 INFO L146 ILogger]: Analyzing trace with hash 1775657871, now seen corresponding path program 14 times [2019-05-23 11:24:38,179 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:38,180 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:38,180 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:38,181 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:38,181 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:38,210 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:39,682 INFO L146 ILogger]: Checked inductivity of 1183 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 922 trivial. 0 not checked. [2019-05-23 11:24:39,683 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:39,683 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 11:24:39,692 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:24:39,772 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:24:39,772 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:39,773 INFO L146 ILogger]: Trace formula consists of 570 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:24:39,777 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:39,957 INFO L146 ILogger]: Checked inductivity of 1183 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 922 trivial. 0 not checked. [2019-05-23 11:24:39,976 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:39,976 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2019-05-23 11:24:39,977 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:24:39,977 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:24:39,978 INFO L146 ILogger]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:24:39,978 INFO L146 ILogger]: Start difference. First operand 363 states and 367 transitions. Second operand 23 states. [2019-05-23 11:24:41,092 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:41,092 INFO L146 ILogger]: Finished difference Result 594 states and 603 transitions. [2019-05-23 11:24:41,092 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:24:41,093 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 362 [2019-05-23 11:24:41,093 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:41,096 INFO L146 ILogger]: With dead ends: 594 [2019-05-23 11:24:41,096 INFO L146 ILogger]: Without dead ends: 384 [2019-05-23 11:24:41,098 INFO L146 ILogger]: 0 DeclaredPredicates, 400 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:24:41,099 INFO L146 ILogger]: Start minimizeSevpa. Operand 384 states. [2019-05-23 11:24:41,104 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 384 to 384. [2019-05-23 11:24:41,104 INFO L146 ILogger]: Start removeUnreachable. Operand 384 states. [2019-05-23 11:24:41,105 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 384 states to 384 states and 388 transitions. [2019-05-23 11:24:41,105 INFO L146 ILogger]: Start accepts. Automaton has 384 states and 388 transitions. Word has length 362 [2019-05-23 11:24:41,106 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:41,106 INFO L146 ILogger]: Abstraction has 384 states and 388 transitions. [2019-05-23 11:24:41,106 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:24:41,106 INFO L146 ILogger]: Start isEmpty. Operand 384 states and 388 transitions. [2019-05-23 11:24:41,108 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 384 [2019-05-23 11:24:41,108 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:41,109 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:41,109 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:41,109 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:41,109 INFO L146 ILogger]: Analyzing trace with hash -1245508068, now seen corresponding path program 15 times [2019-05-23 11:24:41,109 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:41,110 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:41,110 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:41,110 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:41,111 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:41,158 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:41,930 INFO L146 ILogger]: Checked inductivity of 1375 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2019-05-23 11:24:41,930 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:41,930 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 11:24:41,940 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:24:42,098 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-05-23 11:24:42,099 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:42,101 INFO L146 ILogger]: Trace formula consists of 388 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:24:42,104 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:42,241 INFO L146 ILogger]: Checked inductivity of 1375 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2019-05-23 11:24:42,261 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:42,261 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2019-05-23 11:24:42,262 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:24:42,262 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:24:42,262 INFO L146 ILogger]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:24:42,262 INFO L146 ILogger]: Start difference. First operand 384 states and 388 transitions. Second operand 15 states. [2019-05-23 11:24:42,441 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:42,442 INFO L146 ILogger]: Finished difference Result 484 states and 489 transitions. [2019-05-23 11:24:42,442 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:24:42,442 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 383 [2019-05-23 11:24:42,443 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:42,445 INFO L146 ILogger]: With dead ends: 484 [2019-05-23 11:24:42,445 INFO L146 ILogger]: Without dead ends: 396 [2019-05-23 11:24:42,446 INFO L146 ILogger]: 0 DeclaredPredicates, 405 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:24:42,447 INFO L146 ILogger]: Start minimizeSevpa. Operand 396 states. [2019-05-23 11:24:42,452 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 396 to 391. [2019-05-23 11:24:42,452 INFO L146 ILogger]: Start removeUnreachable. Operand 391 states. [2019-05-23 11:24:42,453 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 391 states to 391 states and 395 transitions. [2019-05-23 11:24:42,453 INFO L146 ILogger]: Start accepts. Automaton has 391 states and 395 transitions. Word has length 383 [2019-05-23 11:24:42,454 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:42,454 INFO L146 ILogger]: Abstraction has 391 states and 395 transitions. [2019-05-23 11:24:42,454 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:24:42,454 INFO L146 ILogger]: Start isEmpty. Operand 391 states and 395 transitions. [2019-05-23 11:24:42,456 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 391 [2019-05-23 11:24:42,456 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:42,456 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:42,457 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:42,457 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:42,457 INFO L146 ILogger]: Analyzing trace with hash 172754777, now seen corresponding path program 16 times [2019-05-23 11:24:42,457 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:42,457 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:42,458 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:42,458 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:42,458 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:42,492 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:42,807 INFO L146 ILogger]: Checked inductivity of 1411 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2019-05-23 11:24:42,807 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:42,807 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 11:24:42,817 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:24:42,914 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:24:42,914 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:42,916 INFO L146 ILogger]: Trace formula consists of 572 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:24:42,920 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:43,016 INFO L146 ILogger]: Checked inductivity of 1411 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2019-05-23 11:24:43,035 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:43,035 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2019-05-23 11:24:43,036 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:24:43,036 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:24:43,036 INFO L146 ILogger]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:24:43,036 INFO L146 ILogger]: Start difference. First operand 391 states and 395 transitions. Second operand 17 states. [2019-05-23 11:24:43,239 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:43,239 INFO L146 ILogger]: Finished difference Result 491 states and 496 transitions. [2019-05-23 11:24:43,240 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:24:43,240 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 390 [2019-05-23 11:24:43,241 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:43,242 INFO L146 ILogger]: With dead ends: 491 [2019-05-23 11:24:43,243 INFO L146 ILogger]: Without dead ends: 403 [2019-05-23 11:24:43,243 INFO L146 ILogger]: 0 DeclaredPredicates, 416 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:24:43,244 INFO L146 ILogger]: Start minimizeSevpa. Operand 403 states. [2019-05-23 11:24:43,249 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 403 to 398. [2019-05-23 11:24:43,249 INFO L146 ILogger]: Start removeUnreachable. Operand 398 states. [2019-05-23 11:24:43,250 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 398 states to 398 states and 402 transitions. [2019-05-23 11:24:43,250 INFO L146 ILogger]: Start accepts. Automaton has 398 states and 402 transitions. Word has length 390 [2019-05-23 11:24:43,250 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:43,251 INFO L146 ILogger]: Abstraction has 398 states and 402 transitions. [2019-05-23 11:24:43,251 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:24:43,251 INFO L146 ILogger]: Start isEmpty. Operand 398 states and 402 transitions. [2019-05-23 11:24:43,253 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 398 [2019-05-23 11:24:43,253 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:43,253 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:43,254 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:43,254 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:43,254 INFO L146 ILogger]: Analyzing trace with hash -770662532, now seen corresponding path program 17 times [2019-05-23 11:24:43,254 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:43,254 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:43,255 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:43,255 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:43,255 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:43,289 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:44,633 INFO L146 ILogger]: Checked inductivity of 1454 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2019-05-23 11:24:44,633 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:44,633 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 11:24:44,646 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:24:45,321 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2019-05-23 11:24:45,321 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:45,324 INFO L146 ILogger]: Trace formula consists of 623 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:24:45,329 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:45,528 INFO L146 ILogger]: Checked inductivity of 1454 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2019-05-23 11:24:45,549 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:45,549 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2019-05-23 11:24:45,550 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:24:45,550 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:24:45,550 INFO L146 ILogger]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:24:45,550 INFO L146 ILogger]: Start difference. First operand 398 states and 402 transitions. Second operand 19 states. [2019-05-23 11:24:46,368 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:46,368 INFO L146 ILogger]: Finished difference Result 498 states and 503 transitions. [2019-05-23 11:24:46,370 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:24:46,370 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 397 [2019-05-23 11:24:46,371 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:46,372 INFO L146 ILogger]: With dead ends: 498 [2019-05-23 11:24:46,373 INFO L146 ILogger]: Without dead ends: 410 [2019-05-23 11:24:46,373 INFO L146 ILogger]: 0 DeclaredPredicates, 427 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:24:46,374 INFO L146 ILogger]: Start minimizeSevpa. Operand 410 states. [2019-05-23 11:24:46,379 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 410 to 405. [2019-05-23 11:24:46,379 INFO L146 ILogger]: Start removeUnreachable. Operand 405 states. [2019-05-23 11:24:46,380 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 405 states to 405 states and 409 transitions. [2019-05-23 11:24:46,380 INFO L146 ILogger]: Start accepts. Automaton has 405 states and 409 transitions. Word has length 397 [2019-05-23 11:24:46,381 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:46,381 INFO L146 ILogger]: Abstraction has 405 states and 409 transitions. [2019-05-23 11:24:46,381 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:24:46,381 INFO L146 ILogger]: Start isEmpty. Operand 405 states and 409 transitions. [2019-05-23 11:24:46,383 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 405 [2019-05-23 11:24:46,383 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:46,384 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:46,384 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:46,384 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:46,384 INFO L146 ILogger]: Analyzing trace with hash 1815751161, now seen corresponding path program 18 times [2019-05-23 11:24:46,385 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:46,385 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:46,385 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:46,386 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:46,386 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:46,420 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:46,949 INFO L146 ILogger]: Checked inductivity of 1504 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2019-05-23 11:24:46,949 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:46,949 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 11:24:46,958 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:24:47,875 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2019-05-23 11:24:47,875 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:47,880 INFO L146 ILogger]: Trace formula consists of 633 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:24:47,883 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:48,021 INFO L146 ILogger]: Checked inductivity of 1504 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2019-05-23 11:24:48,046 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:48,046 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-05-23 11:24:48,047 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:24:48,047 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:24:48,047 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:24:48,047 INFO L146 ILogger]: Start difference. First operand 405 states and 409 transitions. Second operand 21 states. [2019-05-23 11:24:48,340 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:48,341 INFO L146 ILogger]: Finished difference Result 500 states and 505 transitions. [2019-05-23 11:24:48,341 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:24:48,341 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 404 [2019-05-23 11:24:48,342 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:48,344 INFO L146 ILogger]: With dead ends: 500 [2019-05-23 11:24:48,344 INFO L146 ILogger]: Without dead ends: 412 [2019-05-23 11:24:48,345 INFO L146 ILogger]: 0 DeclaredPredicates, 438 GetRequests, 403 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:24:48,346 INFO L146 ILogger]: Start minimizeSevpa. Operand 412 states. [2019-05-23 11:24:48,351 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 412 to 412. [2019-05-23 11:24:48,351 INFO L146 ILogger]: Start removeUnreachable. Operand 412 states. [2019-05-23 11:24:48,352 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 412 states to 412 states and 416 transitions. [2019-05-23 11:24:48,352 INFO L146 ILogger]: Start accepts. Automaton has 412 states and 416 transitions. Word has length 404 [2019-05-23 11:24:48,353 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:48,353 INFO L146 ILogger]: Abstraction has 412 states and 416 transitions. [2019-05-23 11:24:48,353 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:24:48,353 INFO L146 ILogger]: Start isEmpty. Operand 412 states and 416 transitions. [2019-05-23 11:24:48,355 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 412 [2019-05-23 11:24:48,355 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:48,356 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:48,356 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:48,356 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:48,356 INFO L146 ILogger]: Analyzing trace with hash -585873188, now seen corresponding path program 19 times [2019-05-23 11:24:48,357 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:48,357 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:48,357 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:48,358 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:48,358 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:49,121 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:59,130 WARN L146 ILogger]: Spent 372.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 8 [2019-05-23 11:24:59,596 WARN L146 ILogger]: Spent 347.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 8 [2019-05-23 11:25:00,010 WARN L146 ILogger]: Spent 272.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 8 [2019-05-23 11:25:00,629 WARN L146 ILogger]: Spent 448.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 11 [2019-05-23 11:25:01,136 WARN L146 ILogger]: Spent 310.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 8 [2019-05-23 11:25:01,596 WARN L146 ILogger]: Spent 185.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 9 [2019-05-23 11:25:02,204 WARN L146 ILogger]: Spent 100.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 11