java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/array-industry-pattern/array_of_struct_loop_dep_false-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:21:15,660 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:21:15,662 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:21:15,676 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:21:15,677 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:21:15,678 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:21:15,679 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:21:15,681 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:21:15,683 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:21:15,683 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:21:15,684 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:21:15,685 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:21:15,686 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:21:15,687 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:21:15,688 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:21:15,688 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:21:15,689 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:21:15,691 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:21:15,696 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:21:15,701 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:21:15,703 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:21:15,704 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:21:15,706 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:21:15,706 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:21:15,706 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:21:15,707 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:21:15,707 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:21:15,708 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:21:15,709 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:21:15,709 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:21:15,710 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:21:15,711 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:21:15,712 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:21:15,712 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:21:15,713 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:21:15,713 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:21:15,713 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:21:15,714 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:21:15,715 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:21:15,715 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:21:15,732 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:21:15,733 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:21:15,735 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:21:15,735 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:21:15,735 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:21:15,735 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:21:15,736 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:21:15,736 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:21:15,736 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:21:15,737 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:21:15,737 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:21:15,737 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:21:15,737 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:21:15,737 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:21:15,738 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:21:15,738 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:21:15,738 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:21:15,738 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:21:15,738 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:21:15,739 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:21:15,740 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:21:15,740 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:21:15,740 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:21:15,741 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:21:15,741 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:21:15,741 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:21:15,741 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:21:15,741 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:21:15,742 INFO L146 ILogger]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Command for external solver -> z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement [2019-05-23 11:21:15,784 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:21:15,801 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:21:15,807 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:21:15,809 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:21:15,809 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:21:15,810 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-industry-pattern/array_of_struct_loop_dep_false-unreach-call.i [2019-05-23 11:21:15,879 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1238c776/3e49ddc054784bd881d98f848d5400b7/FLAGb8d77afbe [2019-05-23 11:21:16,350 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:21:16,351 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-industry-pattern/array_of_struct_loop_dep_false-unreach-call.i [2019-05-23 11:21:16,356 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1238c776/3e49ddc054784bd881d98f848d5400b7/FLAGb8d77afbe [2019-05-23 11:21:16,705 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1238c776/3e49ddc054784bd881d98f848d5400b7 [2019-05-23 11:21:16,714 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:21:16,717 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:21:16,718 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:21:16,718 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:21:16,722 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:21:16,723 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:21:16" (1/1) ... [2019-05-23 11:21:16,726 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@657b6dfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:16, skipping insertion in model container [2019-05-23 11:21:16,726 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:21:16" (1/1) ... [2019-05-23 11:21:16,734 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:21:16,752 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:21:16,980 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:21:18,527 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:21:18,547 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:21:18,573 INFO L146 ILogger]: Completed translation [2019-05-23 11:21:18,573 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:18 WrapperNode [2019-05-23 11:21:18,574 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:21:18,575 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:21:18,575 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:21:18,575 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:21:18,584 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:18" (1/1) ... [2019-05-23 11:21:18,594 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:18" (1/1) ... [2019-05-23 11:21:18,615 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:21:18,615 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:21:18,616 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:21:18,616 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:21:18,627 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:18" (1/1) ... [2019-05-23 11:21:18,627 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:18" (1/1) ... [2019-05-23 11:21:18,629 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:18" (1/1) ... [2019-05-23 11:21:18,629 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:18" (1/1) ... [2019-05-23 11:21:18,635 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:18" (1/1) ... [2019-05-23 11:21:18,640 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:18" (1/1) ... [2019-05-23 11:21:18,641 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:18" (1/1) ... [2019-05-23 11:21:18,643 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:21:18,644 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:21:18,644 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:21:18,644 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:21:18,645 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 [2019-05-23 11:21:18,726 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:21:18,727 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:21:18,727 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:21:18,727 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:21:18,727 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:21:19,210 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:21:19,210 INFO L146 ILogger]: Removed 8 assume(true) statements. [2019-05-23 11:21:19,211 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:21:19 BoogieIcfgContainer [2019-05-23 11:21:19,212 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:21:19,213 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:21:19,213 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:21:19,216 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:21:19,217 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:21:16" (1/3) ... [2019-05-23 11:21:19,218 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@730f7c37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:21:19, skipping insertion in model container [2019-05-23 11:21:19,220 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:18" (2/3) ... [2019-05-23 11:21:19,221 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@730f7c37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:21:19, skipping insertion in model container [2019-05-23 11:21:19,221 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:21:19" (3/3) ... [2019-05-23 11:21:19,223 INFO L146 ILogger]: Analyzing ICFG array_of_struct_loop_dep_false-unreach-call.i [2019-05-23 11:21:19,232 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:21:19,239 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:21:19,256 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:21:19,285 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:21:19,286 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:21:19,286 INFO L146 ILogger]: Hoare is true [2019-05-23 11:21:19,286 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:21:19,287 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:21:19,287 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:21:19,287 INFO L146 ILogger]: Difference is false [2019-05-23 11:21:19,287 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:21:19,287 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:21:19,309 INFO L146 ILogger]: Start isEmpty. Operand 32 states. [2019-05-23 11:21:19,317 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 18 [2019-05-23 11:21:19,317 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:19,319 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:19,321 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:19,328 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:19,328 INFO L146 ILogger]: Analyzing trace with hash 260916638, now seen corresponding path program 1 times [2019-05-23 11:21:19,330 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:19,331 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:19,385 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:19,386 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:19,386 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:19,428 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:19,466 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:19,468 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:21:19,468 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:21:19,471 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:21:19,481 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:21:19,482 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:21:19,484 INFO L146 ILogger]: Start difference. First operand 32 states. Second operand 2 states. [2019-05-23 11:21:19,499 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:19,499 INFO L146 ILogger]: Finished difference Result 51 states and 59 transitions. [2019-05-23 11:21:19,500 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:21:19,501 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 17 [2019-05-23 11:21:19,501 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:19,511 INFO L146 ILogger]: With dead ends: 51 [2019-05-23 11:21:19,512 INFO L146 ILogger]: Without dead ends: 28 [2019-05-23 11:21:19,515 INFO L146 ILogger]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:21:19,533 INFO L146 ILogger]: Start minimizeSevpa. Operand 28 states. [2019-05-23 11:21:19,548 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-05-23 11:21:19,549 INFO L146 ILogger]: Start removeUnreachable. Operand 28 states. [2019-05-23 11:21:19,551 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2019-05-23 11:21:19,555 INFO L146 ILogger]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 17 [2019-05-23 11:21:19,555 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:19,556 INFO L146 ILogger]: Abstraction has 28 states and 30 transitions. [2019-05-23 11:21:19,556 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:21:19,556 INFO L146 ILogger]: Start isEmpty. Operand 28 states and 30 transitions. [2019-05-23 11:21:19,557 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 18 [2019-05-23 11:21:19,557 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:19,558 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:19,558 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:19,558 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:19,559 INFO L146 ILogger]: Analyzing trace with hash -651862379, now seen corresponding path program 1 times [2019-05-23 11:21:19,560 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:19,560 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:19,563 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:19,564 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:19,564 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:19,591 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:19,628 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:19,629 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:21:19,629 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:21:19,631 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:21:19,632 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:21:19,632 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:21:19,632 INFO L146 ILogger]: Start difference. First operand 28 states and 30 transitions. Second operand 3 states. [2019-05-23 11:21:19,752 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:19,752 INFO L146 ILogger]: Finished difference Result 60 states and 65 transitions. [2019-05-23 11:21:19,753 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:21:19,753 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 17 [2019-05-23 11:21:19,753 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:19,754 INFO L146 ILogger]: With dead ends: 60 [2019-05-23 11:21:19,755 INFO L146 ILogger]: Without dead ends: 45 [2019-05-23 11:21:19,758 INFO L146 ILogger]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:21:19,759 INFO L146 ILogger]: Start minimizeSevpa. Operand 45 states. [2019-05-23 11:21:19,765 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 45 to 37. [2019-05-23 11:21:19,766 INFO L146 ILogger]: Start removeUnreachable. Operand 37 states. [2019-05-23 11:21:19,768 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2019-05-23 11:21:19,768 INFO L146 ILogger]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 17 [2019-05-23 11:21:19,769 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:19,769 INFO L146 ILogger]: Abstraction has 37 states and 40 transitions. [2019-05-23 11:21:19,769 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:21:19,769 INFO L146 ILogger]: Start isEmpty. Operand 37 states and 40 transitions. [2019-05-23 11:21:19,771 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 23 [2019-05-23 11:21:19,771 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:19,771 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] [2019-05-23 11:21:19,771 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:19,771 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:19,773 INFO L146 ILogger]: Analyzing trace with hash -993398804, now seen corresponding path program 1 times [2019-05-23 11:21:19,773 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:19,773 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:19,774 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:19,774 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:19,774 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:19,789 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:19,909 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:19,909 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:19,910 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:21:19,929 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:19,957 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:19,959 INFO L146 ILogger]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:21:19,965 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:20,044 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:20,077 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:20,077 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-05-23 11:21:20,078 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:21:20,078 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:21:20,078 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:21:20,079 INFO L146 ILogger]: Start difference. First operand 37 states and 40 transitions. Second operand 7 states. [2019-05-23 11:21:20,549 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:20,549 INFO L146 ILogger]: Finished difference Result 73 states and 78 transitions. [2019-05-23 11:21:20,550 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:21:20,550 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 22 [2019-05-23 11:21:20,551 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:20,552 INFO L146 ILogger]: With dead ends: 73 [2019-05-23 11:21:20,552 INFO L146 ILogger]: Without dead ends: 50 [2019-05-23 11:21:20,553 INFO L146 ILogger]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:21:20,553 INFO L146 ILogger]: Start minimizeSevpa. Operand 50 states. [2019-05-23 11:21:20,558 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 50 to 42. [2019-05-23 11:21:20,559 INFO L146 ILogger]: Start removeUnreachable. Operand 42 states. [2019-05-23 11:21:20,560 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2019-05-23 11:21:20,560 INFO L146 ILogger]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 22 [2019-05-23 11:21:20,560 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:20,560 INFO L146 ILogger]: Abstraction has 42 states and 45 transitions. [2019-05-23 11:21:20,561 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:21:20,561 INFO L146 ILogger]: Start isEmpty. Operand 42 states and 45 transitions. [2019-05-23 11:21:20,561 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 28 [2019-05-23 11:21:20,562 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:20,562 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:20,562 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:20,562 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:20,562 INFO L146 ILogger]: Analyzing trace with hash -2100454155, now seen corresponding path program 2 times [2019-05-23 11:21:20,563 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:20,563 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:20,563 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:20,564 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:20,564 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:20,586 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:20,707 INFO L146 ILogger]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:20,708 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:20,708 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:21:20,718 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:21:20,762 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:21:20,762 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:20,763 INFO L146 ILogger]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:21:20,765 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:20,873 INFO L146 ILogger]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:20,894 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:20,895 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2019-05-23 11:21:20,895 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:21:20,895 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:21:20,896 INFO L146 ILogger]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:21:20,896 INFO L146 ILogger]: Start difference. First operand 42 states and 45 transitions. Second operand 9 states. [2019-05-23 11:21:21,292 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:21,292 INFO L146 ILogger]: Finished difference Result 78 states and 83 transitions. [2019-05-23 11:21:21,293 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-05-23 11:21:21,293 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 27 [2019-05-23 11:21:21,293 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:21,294 INFO L146 ILogger]: With dead ends: 78 [2019-05-23 11:21:21,294 INFO L146 ILogger]: Without dead ends: 55 [2019-05-23 11:21:21,296 INFO L146 ILogger]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:21:21,296 INFO L146 ILogger]: Start minimizeSevpa. Operand 55 states. [2019-05-23 11:21:21,304 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 55 to 47. [2019-05-23 11:21:21,305 INFO L146 ILogger]: Start removeUnreachable. Operand 47 states. [2019-05-23 11:21:21,306 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2019-05-23 11:21:21,306 INFO L146 ILogger]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 27 [2019-05-23 11:21:21,306 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:21,307 INFO L146 ILogger]: Abstraction has 47 states and 50 transitions. [2019-05-23 11:21:21,307 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:21:21,307 INFO L146 ILogger]: Start isEmpty. Operand 47 states and 50 transitions. [2019-05-23 11:21:21,310 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 33 [2019-05-23 11:21:21,310 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:21,310 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:21,310 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:21,311 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:21,311 INFO L146 ILogger]: Analyzing trace with hash 1416211852, now seen corresponding path program 3 times [2019-05-23 11:21:21,311 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:21,312 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:21,314 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:21,314 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:21,314 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:21,345 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:21,604 INFO L146 ILogger]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:21,604 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:21,604 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:21:21,622 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:21:21,643 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:21:21,643 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:21,644 INFO L146 ILogger]: Trace formula consists of 56 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:21:21,646 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:21,714 INFO L146 ILogger]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:21,741 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:21,742 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2019-05-23 11:21:21,742 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:21:21,743 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:21:21,743 INFO L146 ILogger]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:21:21,743 INFO L146 ILogger]: Start difference. First operand 47 states and 50 transitions. Second operand 11 states. [2019-05-23 11:21:22,170 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:22,170 INFO L146 ILogger]: Finished difference Result 83 states and 88 transitions. [2019-05-23 11:21:22,170 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:21:22,171 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 32 [2019-05-23 11:21:22,171 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:22,171 INFO L146 ILogger]: With dead ends: 83 [2019-05-23 11:21:22,172 INFO L146 ILogger]: Without dead ends: 60 [2019-05-23 11:21:22,172 INFO L146 ILogger]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:21:22,173 INFO L146 ILogger]: Start minimizeSevpa. Operand 60 states. [2019-05-23 11:21:22,178 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 60 to 52. [2019-05-23 11:21:22,178 INFO L146 ILogger]: Start removeUnreachable. Operand 52 states. [2019-05-23 11:21:22,179 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2019-05-23 11:21:22,179 INFO L146 ILogger]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 32 [2019-05-23 11:21:22,180 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:22,180 INFO L146 ILogger]: Abstraction has 52 states and 55 transitions. [2019-05-23 11:21:22,180 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:21:22,180 INFO L146 ILogger]: Start isEmpty. Operand 52 states and 55 transitions. [2019-05-23 11:21:22,181 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 38 [2019-05-23 11:21:22,181 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:22,181 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:22,182 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:22,182 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:22,182 INFO L146 ILogger]: Analyzing trace with hash 1937990485, now seen corresponding path program 4 times [2019-05-23 11:21:22,182 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:22,183 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:22,184 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:22,184 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:22,184 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:22,197 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:22,321 INFO L146 ILogger]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:22,322 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:22,322 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:21:22,340 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:21:22,361 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:21:22,361 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:22,363 INFO L146 ILogger]: Trace formula consists of 49 conjuncts, 22 conjunts are in the unsatisfiable core [2019-05-23 11:21:22,366 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:22,417 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-05-23 11:21:22,418 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:21:22,429 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:21:22,430 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:21:22,430 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2019-05-23 11:21:22,575 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:21:22,576 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 46 [2019-05-23 11:21:22,577 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:21:22,604 INFO L146 ILogger]: treesize reduction 24, result has 47.8 percent of original size [2019-05-23 11:21:22,605 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:21:22,605 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2019-05-23 11:21:23,053 WARN L146 ILogger]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2019-05-23 11:21:23,054 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:21:23,054 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 108 [2019-05-23 11:21:23,057 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:21:23,103 INFO L146 ILogger]: treesize reduction 60, result has 38.8 percent of original size [2019-05-23 11:21:23,105 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-05-23 11:21:23,105 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:42, output treesize:38 [2019-05-23 11:21:23,453 WARN L146 ILogger]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2019-05-23 11:21:23,454 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:21:23,454 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 186 [2019-05-23 11:21:23,456 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:21:23,512 INFO L146 ILogger]: treesize reduction 96, result has 36.0 percent of original size [2019-05-23 11:21:23,514 INFO L146 ILogger]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-05-23 11:21:23,514 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:58, output treesize:54 [2019-05-23 11:22:16,241 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:22:16,242 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 100 [2019-05-23 11:22:16,244 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:22:16,274 INFO L146 ILogger]: treesize reduction 36, result has 32.1 percent of original size [2019-05-23 11:22:16,275 INFO L146 ILogger]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:22:16,276 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 6 variables, input treesize:61, output treesize:3 [2019-05-23 11:22:16,364 INFO L146 ILogger]: Checked inductivity of 34 backedges. 13 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:16,386 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:16,386 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17] total 25 [2019-05-23 11:22:16,387 INFO L146 ILogger]: Interpolant automaton has 25 states [2019-05-23 11:22:16,387 INFO L146 ILogger]: Constructing interpolant automaton starting with 25 interpolants. [2019-05-23 11:22:16,387 INFO L146 ILogger]: CoverageRelationStatistics Valid=84, Invalid=514, Unknown=2, NotChecked=0, Total=600 [2019-05-23 11:22:16,388 INFO L146 ILogger]: Start difference. First operand 52 states and 55 transitions. Second operand 25 states.