java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/array-examples/standard_strcmp_true-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:20:06,506 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:20:06,509 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:20:06,527 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:20:06,528 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:20:06,529 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:20:06,531 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:20:06,533 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:20:06,536 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:20:06,539 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:20:06,540 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:20:06,541 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:20:06,543 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:20:06,544 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:20:06,547 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:20:06,554 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:20:06,555 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:20:06,561 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:20:06,563 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:20:06,567 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:20:06,569 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:20:06,570 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:20:06,574 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:20:06,574 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:20:06,574 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:20:06,575 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:20:06,576 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:20:06,577 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:20:06,577 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:20:06,579 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:20:06,580 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:20:06,582 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:20:06,583 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:20:06,584 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:20:06,584 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:20:06,585 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:20:06,585 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:20:06,586 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:20:06,587 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:20:06,588 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:20:06,617 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:20:06,617 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:20:06,618 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:20:06,618 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:20:06,619 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:20:06,620 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:20:06,620 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:20:06,620 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:20:06,620 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:20:06,621 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:20:06,621 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:20:06,621 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:20:06,621 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:20:06,621 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:20:06,622 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:20:06,623 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:20:06,623 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:20:06,623 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:20:06,623 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:20:06,624 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:20:06,624 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:20:06,624 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:20:06,625 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:20:06,625 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:20:06,625 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:20:06,625 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:20:06,625 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:20:06,626 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:20:06,626 INFO L146 ILogger]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Command for external solver -> z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement [2019-05-23 11:20:06,673 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:20:06,691 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:20:06,696 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:20:06,697 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:20:06,698 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:20:06,698 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_strcmp_true-unreach-call_ground.i [2019-05-23 11:20:06,766 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d2d8e28e/6bdb7cb58c934bc2bd6829b74ffd138d/FLAG30d87dc2c [2019-05-23 11:20:07,221 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:20:07,222 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_strcmp_true-unreach-call_ground.i [2019-05-23 11:20:07,228 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d2d8e28e/6bdb7cb58c934bc2bd6829b74ffd138d/FLAG30d87dc2c [2019-05-23 11:20:07,606 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d2d8e28e/6bdb7cb58c934bc2bd6829b74ffd138d [2019-05-23 11:20:07,615 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:20:07,617 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:20:07,618 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:20:07,618 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:20:07,623 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:20:07,624 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:20:07" (1/1) ... [2019-05-23 11:20:07,627 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@479109e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:07, skipping insertion in model container [2019-05-23 11:20:07,628 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:20:07" (1/1) ... [2019-05-23 11:20:07,636 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:20:07,657 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:20:07,874 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:20:07,887 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:20:07,912 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:20:07,929 INFO L146 ILogger]: Completed translation [2019-05-23 11:20:07,930 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:07 WrapperNode [2019-05-23 11:20:07,930 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:20:07,931 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:20:07,931 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:20:07,931 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:20:07,941 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:07" (1/1) ... [2019-05-23 11:20:07,950 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:07" (1/1) ... [2019-05-23 11:20:07,978 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:20:07,979 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:20:07,979 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:20:07,979 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:20:07,991 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:07" (1/1) ... [2019-05-23 11:20:07,992 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:07" (1/1) ... [2019-05-23 11:20:07,994 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:07" (1/1) ... [2019-05-23 11:20:07,994 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:07" (1/1) ... [2019-05-23 11:20:08,009 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:07" (1/1) ... [2019-05-23 11:20:08,021 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:07" (1/1) ... [2019-05-23 11:20:08,022 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:07" (1/1) ... [2019-05-23 11:20:08,024 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:20:08,028 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:20:08,028 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:20:08,028 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:20:08,029 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 [2019-05-23 11:20:08,192 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:20:08,192 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:20:08,192 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:20:08,193 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:20:08,193 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:20:08,748 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:20:08,748 INFO L146 ILogger]: Removed 10 assume(true) statements. [2019-05-23 11:20:08,750 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:20:08 BoogieIcfgContainer [2019-05-23 11:20:08,750 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:20:08,751 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:20:08,751 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:20:08,754 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:20:08,754 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:20:07" (1/3) ... [2019-05-23 11:20:08,755 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227f4c47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:20:08, skipping insertion in model container [2019-05-23 11:20:08,755 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:20:07" (2/3) ... [2019-05-23 11:20:08,756 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227f4c47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:20:08, skipping insertion in model container [2019-05-23 11:20:08,756 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:20:08" (3/3) ... [2019-05-23 11:20:08,758 INFO L146 ILogger]: Analyzing ICFG standard_strcmp_true-unreach-call_ground.i [2019-05-23 11:20:08,767 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:20:08,774 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:20:08,791 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:20:08,824 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:20:08,825 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:20:08,825 INFO L146 ILogger]: Hoare is true [2019-05-23 11:20:08,825 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:20:08,827 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:20:08,827 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:20:08,828 INFO L146 ILogger]: Difference is false [2019-05-23 11:20:08,828 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:20:08,828 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:20:08,853 INFO L146 ILogger]: Start isEmpty. Operand 52 states. [2019-05-23 11:20:08,861 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 30 [2019-05-23 11:20:08,861 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:08,862 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] [2019-05-23 11:20:08,864 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:08,869 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:08,869 INFO L146 ILogger]: Analyzing trace with hash 1373531512, now seen corresponding path program 1 times [2019-05-23 11:20:08,871 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:08,871 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:08,913 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:08,914 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:08,914 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:08,958 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:09,048 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:09,051 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:20:09,051 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:20:09,055 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:20:09,065 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:20:09,066 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:20:09,068 INFO L146 ILogger]: Start difference. First operand 52 states. Second operand 3 states. [2019-05-23 11:20:09,140 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:09,141 INFO L146 ILogger]: Finished difference Result 121 states and 136 transitions. [2019-05-23 11:20:09,141 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:20:09,143 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 29 [2019-05-23 11:20:09,143 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:09,154 INFO L146 ILogger]: With dead ends: 121 [2019-05-23 11:20:09,154 INFO L146 ILogger]: Without dead ends: 75 [2019-05-23 11:20:09,157 INFO L146 ILogger]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:20:09,175 INFO L146 ILogger]: Start minimizeSevpa. Operand 75 states. [2019-05-23 11:20:09,190 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 75 to 45. [2019-05-23 11:20:09,191 INFO L146 ILogger]: Start removeUnreachable. Operand 45 states. [2019-05-23 11:20:09,192 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2019-05-23 11:20:09,194 INFO L146 ILogger]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 29 [2019-05-23 11:20:09,194 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:09,194 INFO L146 ILogger]: Abstraction has 45 states and 47 transitions. [2019-05-23 11:20:09,195 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:20:09,195 INFO L146 ILogger]: Start isEmpty. Operand 45 states and 47 transitions. [2019-05-23 11:20:09,196 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 35 [2019-05-23 11:20:09,196 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:09,196 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] [2019-05-23 11:20:09,197 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:09,197 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:09,197 INFO L146 ILogger]: Analyzing trace with hash -1826157471, now seen corresponding path program 1 times [2019-05-23 11:20:09,197 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:09,197 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:09,199 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:09,199 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:09,199 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:09,226 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:09,331 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:09,331 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:20:09,332 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-05-23 11:20:09,333 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:20:09,334 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:20:09,334 INFO L146 ILogger]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:20:09,334 INFO L146 ILogger]: Start difference. First operand 45 states and 47 transitions. Second operand 5 states. [2019-05-23 11:20:09,610 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:09,610 INFO L146 ILogger]: Finished difference Result 66 states and 68 transitions. [2019-05-23 11:20:09,611 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:20:09,611 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 34 [2019-05-23 11:20:09,612 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:09,613 INFO L146 ILogger]: With dead ends: 66 [2019-05-23 11:20:09,613 INFO L146 ILogger]: Without dead ends: 42 [2019-05-23 11:20:09,614 INFO L146 ILogger]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:20:09,615 INFO L146 ILogger]: Start minimizeSevpa. Operand 42 states. [2019-05-23 11:20:09,618 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 42 to 42. [2019-05-23 11:20:09,619 INFO L146 ILogger]: Start removeUnreachable. Operand 42 states. [2019-05-23 11:20:09,620 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2019-05-23 11:20:09,620 INFO L146 ILogger]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 34 [2019-05-23 11:20:09,621 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:09,621 INFO L146 ILogger]: Abstraction has 42 states and 43 transitions. [2019-05-23 11:20:09,621 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:20:09,621 INFO L146 ILogger]: Start isEmpty. Operand 42 states and 43 transitions. [2019-05-23 11:20:09,623 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 37 [2019-05-23 11:20:09,623 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:09,623 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] [2019-05-23 11:20:09,623 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:09,624 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:09,624 INFO L146 ILogger]: Analyzing trace with hash 1059196046, now seen corresponding path program 1 times [2019-05-23 11:20:09,624 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:09,624 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:09,625 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:09,626 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:09,626 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:09,647 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:09,783 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 11:20:09,783 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:09,784 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:09,797 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:09,835 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:09,837 INFO L146 ILogger]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:20:09,845 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:09,902 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 11:20:09,923 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:09,924 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-05-23 11:20:09,924 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:20:09,925 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:20:09,925 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:20:09,926 INFO L146 ILogger]: Start difference. First operand 42 states and 43 transitions. Second operand 5 states. [2019-05-23 11:20:09,985 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:09,985 INFO L146 ILogger]: Finished difference Result 77 states and 79 transitions. [2019-05-23 11:20:09,986 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:20:09,987 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 36 [2019-05-23 11:20:09,987 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:09,988 INFO L146 ILogger]: With dead ends: 77 [2019-05-23 11:20:09,988 INFO L146 ILogger]: Without dead ends: 55 [2019-05-23 11:20:09,989 INFO L146 ILogger]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:20:09,989 INFO L146 ILogger]: Start minimizeSevpa. Operand 55 states. [2019-05-23 11:20:09,993 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 55 to 49. [2019-05-23 11:20:09,994 INFO L146 ILogger]: Start removeUnreachable. Operand 49 states. [2019-05-23 11:20:09,995 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2019-05-23 11:20:09,995 INFO L146 ILogger]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 36 [2019-05-23 11:20:09,995 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:09,996 INFO L146 ILogger]: Abstraction has 49 states and 50 transitions. [2019-05-23 11:20:09,996 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:20:09,996 INFO L146 ILogger]: Start isEmpty. Operand 49 states and 50 transitions. [2019-05-23 11:20:09,997 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 44 [2019-05-23 11:20:09,997 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:09,998 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] [2019-05-23 11:20:09,998 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:09,998 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:09,999 INFO L146 ILogger]: Analyzing trace with hash 951543992, now seen corresponding path program 2 times [2019-05-23 11:20:09,999 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:09,999 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:10,000 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:10,000 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:10,000 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:10,018 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:10,128 INFO L146 ILogger]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:10,129 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:10,129 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:10,146 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:10,212 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:10,212 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:10,213 INFO L146 ILogger]: Trace formula consists of 95 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:20:10,216 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:10,254 INFO L146 ILogger]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:10,282 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:10,283 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-05-23 11:20:10,283 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:20:10,284 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:20:10,284 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:20:10,284 INFO L146 ILogger]: Start difference. First operand 49 states and 50 transitions. Second operand 6 states. [2019-05-23 11:20:10,381 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:10,381 INFO L146 ILogger]: Finished difference Result 84 states and 86 transitions. [2019-05-23 11:20:10,382 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:20:10,382 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 43 [2019-05-23 11:20:10,383 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:10,383 INFO L146 ILogger]: With dead ends: 84 [2019-05-23 11:20:10,384 INFO L146 ILogger]: Without dead ends: 62 [2019-05-23 11:20:10,385 INFO L146 ILogger]: 0 DeclaredPredicates, 47 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:20:10,385 INFO L146 ILogger]: Start minimizeSevpa. Operand 62 states. [2019-05-23 11:20:10,390 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 62 to 56. [2019-05-23 11:20:10,391 INFO L146 ILogger]: Start removeUnreachable. Operand 56 states. [2019-05-23 11:20:10,392 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2019-05-23 11:20:10,392 INFO L146 ILogger]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 43 [2019-05-23 11:20:10,393 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:10,393 INFO L146 ILogger]: Abstraction has 56 states and 57 transitions. [2019-05-23 11:20:10,393 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:20:10,393 INFO L146 ILogger]: Start isEmpty. Operand 56 states and 57 transitions. [2019-05-23 11:20:10,394 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 51 [2019-05-23 11:20:10,395 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:10,395 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:20:10,395 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:10,396 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:10,396 INFO L146 ILogger]: Analyzing trace with hash 882108750, now seen corresponding path program 3 times [2019-05-23 11:20:10,396 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:10,396 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:10,397 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:10,398 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:10,398 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:10,415 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:10,620 INFO L146 ILogger]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:10,620 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:10,621 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:10,631 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:10,664 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:20:10,665 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:10,668 INFO L146 ILogger]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:20:10,673 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:10,781 INFO L146 ILogger]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:10,807 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:10,808 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-05-23 11:20:10,808 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:20:10,808 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:20:10,809 INFO L146 ILogger]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:20:10,809 INFO L146 ILogger]: Start difference. First operand 56 states and 57 transitions. Second operand 7 states. [2019-05-23 11:20:10,880 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:10,881 INFO L146 ILogger]: Finished difference Result 91 states and 93 transitions. [2019-05-23 11:20:10,881 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:20:10,881 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 50 [2019-05-23 11:20:10,882 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:10,883 INFO L146 ILogger]: With dead ends: 91 [2019-05-23 11:20:10,883 INFO L146 ILogger]: Without dead ends: 69 [2019-05-23 11:20:10,883 INFO L146 ILogger]: 0 DeclaredPredicates, 55 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:20:10,884 INFO L146 ILogger]: Start minimizeSevpa. Operand 69 states. [2019-05-23 11:20:10,890 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 69 to 63. [2019-05-23 11:20:10,890 INFO L146 ILogger]: Start removeUnreachable. Operand 63 states. [2019-05-23 11:20:10,891 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2019-05-23 11:20:10,891 INFO L146 ILogger]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 50 [2019-05-23 11:20:10,892 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:10,892 INFO L146 ILogger]: Abstraction has 63 states and 64 transitions. [2019-05-23 11:20:10,892 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:20:10,892 INFO L146 ILogger]: Start isEmpty. Operand 63 states and 64 transitions. [2019-05-23 11:20:10,898 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 58 [2019-05-23 11:20:10,899 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:10,899 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:20:10,899 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:10,899 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:10,900 INFO L146 ILogger]: Analyzing trace with hash -577260552, now seen corresponding path program 4 times [2019-05-23 11:20:10,903 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:10,903 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:10,904 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:10,904 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:10,904 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:10,933 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:11,282 INFO L146 ILogger]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:20:11,283 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:11,283 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:11,294 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:20:11,336 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:20:11,336 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:11,339 INFO L146 ILogger]: Trace formula consists of 93 conjuncts, 36 conjunts are in the unsatisfiable core [2019-05-23 11:20:11,343 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:11,984 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:11,985 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2019-05-23 11:20:11,985 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:11,988 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:11,988 INFO L146 ILogger]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:11,989 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 5 variables, input treesize:26, output treesize:3 [2019-05-23 11:20:12,129 INFO L146 ILogger]: Checked inductivity of 46 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-05-23 11:20:12,151 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:12,151 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 14] total 19 [2019-05-23 11:20:12,152 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:20:12,152 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:20:12,153 INFO L146 ILogger]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:20:12,153 INFO L146 ILogger]: Start difference. First operand 63 states and 64 transitions. Second operand 19 states. [2019-05-23 11:20:12,980 WARN L146 ILogger]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2019-05-23 11:20:13,975 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:13,975 INFO L146 ILogger]: Finished difference Result 115 states and 118 transitions. [2019-05-23 11:20:13,976 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:20:13,976 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 57 [2019-05-23 11:20:13,976 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:13,977 INFO L146 ILogger]: With dead ends: 115 [2019-05-23 11:20:13,977 INFO L146 ILogger]: Without dead ends: 93 [2019-05-23 11:20:13,978 INFO L146 ILogger]: 0 DeclaredPredicates, 84 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=346, Invalid=1214, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:20:13,979 INFO L146 ILogger]: Start minimizeSevpa. Operand 93 states. [2019-05-23 11:20:13,984 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 93 to 77. [2019-05-23 11:20:13,985 INFO L146 ILogger]: Start removeUnreachable. Operand 77 states. [2019-05-23 11:20:13,986 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2019-05-23 11:20:13,986 INFO L146 ILogger]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 57 [2019-05-23 11:20:13,987 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:13,987 INFO L146 ILogger]: Abstraction has 77 states and 78 transitions. [2019-05-23 11:20:13,987 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:20:13,987 INFO L146 ILogger]: Start isEmpty. Operand 77 states and 78 transitions. [2019-05-23 11:20:13,988 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 77 [2019-05-23 11:20:13,988 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:13,988 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:13,989 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:13,989 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:13,989 INFO L146 ILogger]: Analyzing trace with hash 1626528982, now seen corresponding path program 1 times [2019-05-23 11:20:13,989 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:13,990 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:13,990 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:13,991 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:13,991 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:14,007 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:14,104 INFO L146 ILogger]: Checked inductivity of 82 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:20:14,104 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:14,104 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:14,118 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:14,168 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:14,169 INFO L146 ILogger]: Trace formula consists of 146 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:20:14,172 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:14,295 INFO L146 ILogger]: Checked inductivity of 82 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:20:14,334 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:14,334 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2019-05-23 11:20:14,335 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:20:14,335 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:20:14,336 INFO L146 ILogger]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:20:14,336 INFO L146 ILogger]: Start difference. First operand 77 states and 78 transitions. Second operand 9 states. [2019-05-23 11:20:14,570 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:14,571 INFO L146 ILogger]: Finished difference Result 119 states and 121 transitions. [2019-05-23 11:20:14,571 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:20:14,571 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 76 [2019-05-23 11:20:14,571 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:14,573 INFO L146 ILogger]: With dead ends: 119 [2019-05-23 11:20:14,573 INFO L146 ILogger]: Without dead ends: 90 [2019-05-23 11:20:14,573 INFO L146 ILogger]: 0 DeclaredPredicates, 83 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:20:14,574 INFO L146 ILogger]: Start minimizeSevpa. Operand 90 states. [2019-05-23 11:20:14,581 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 90 to 84. [2019-05-23 11:20:14,583 INFO L146 ILogger]: Start removeUnreachable. Operand 84 states. [2019-05-23 11:20:14,586 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2019-05-23 11:20:14,586 INFO L146 ILogger]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 76 [2019-05-23 11:20:14,586 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:14,587 INFO L146 ILogger]: Abstraction has 84 states and 85 transitions. [2019-05-23 11:20:14,587 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:20:14,587 INFO L146 ILogger]: Start isEmpty. Operand 84 states and 85 transitions. [2019-05-23 11:20:14,588 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 84 [2019-05-23 11:20:14,588 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:14,588 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:20:14,589 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:14,590 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:14,590 INFO L146 ILogger]: Analyzing trace with hash 54740736, now seen corresponding path program 2 times [2019-05-23 11:20:14,590 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:14,591 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:14,592 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:14,592 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:14,592 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:14,608 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:14,708 INFO L146 ILogger]: Checked inductivity of 118 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:20:14,708 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:14,708 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:14,717 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:14,750 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:14,751 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:14,751 INFO L146 ILogger]: Trace formula consists of 157 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:20:14,755 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:14,781 INFO L146 ILogger]: Checked inductivity of 118 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:20:14,800 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:14,800 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2019-05-23 11:20:14,800 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:20:14,801 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:20:14,801 INFO L146 ILogger]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:20:14,801 INFO L146 ILogger]: Start difference. First operand 84 states and 85 transitions. Second operand 10 states. [2019-05-23 11:20:14,893 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:14,894 INFO L146 ILogger]: Finished difference Result 126 states and 128 transitions. [2019-05-23 11:20:14,896 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-05-23 11:20:14,896 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 83 [2019-05-23 11:20:14,897 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:14,897 INFO L146 ILogger]: With dead ends: 126 [2019-05-23 11:20:14,897 INFO L146 ILogger]: Without dead ends: 97 [2019-05-23 11:20:14,898 INFO L146 ILogger]: 0 DeclaredPredicates, 91 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:20:14,898 INFO L146 ILogger]: Start minimizeSevpa. Operand 97 states. [2019-05-23 11:20:14,904 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 97 to 91. [2019-05-23 11:20:14,905 INFO L146 ILogger]: Start removeUnreachable. Operand 91 states. [2019-05-23 11:20:14,905 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2019-05-23 11:20:14,906 INFO L146 ILogger]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 83 [2019-05-23 11:20:14,906 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:14,906 INFO L146 ILogger]: Abstraction has 91 states and 92 transitions. [2019-05-23 11:20:14,906 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:20:14,906 INFO L146 ILogger]: Start isEmpty. Operand 91 states and 92 transitions. [2019-05-23 11:20:14,908 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 91 [2019-05-23 11:20:14,908 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:14,908 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 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] [2019-05-23 11:20:14,908 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:14,909 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:14,909 INFO L146 ILogger]: Analyzing trace with hash 1853421974, now seen corresponding path program 3 times [2019-05-23 11:20:14,909 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:14,909 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:14,910 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:14,910 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:14,910 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:14,927 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:15,089 INFO L146 ILogger]: Checked inductivity of 161 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:20:15,090 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:15,090 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:15,101 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:15,159 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2019-05-23 11:20:15,159 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:15,160 INFO L146 ILogger]: Trace formula consists of 168 conjuncts, 9 conjunts are in the unsatisfiable core [2019-05-23 11:20:15,163 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:15,200 INFO L146 ILogger]: Checked inductivity of 161 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:20:15,221 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:15,222 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2019-05-23 11:20:15,222 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:20:15,223 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:20:15,223 INFO L146 ILogger]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:20:15,223 INFO L146 ILogger]: Start difference. First operand 91 states and 92 transitions. Second operand 11 states. [2019-05-23 11:20:15,314 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:15,315 INFO L146 ILogger]: Finished difference Result 133 states and 135 transitions. [2019-05-23 11:20:15,323 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-05-23 11:20:15,323 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 90 [2019-05-23 11:20:15,323 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:15,324 INFO L146 ILogger]: With dead ends: 133 [2019-05-23 11:20:15,324 INFO L146 ILogger]: Without dead ends: 104 [2019-05-23 11:20:15,325 INFO L146 ILogger]: 0 DeclaredPredicates, 99 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:20:15,325 INFO L146 ILogger]: Start minimizeSevpa. Operand 104 states. [2019-05-23 11:20:15,338 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 104 to 98. [2019-05-23 11:20:15,339 INFO L146 ILogger]: Start removeUnreachable. Operand 98 states. [2019-05-23 11:20:15,339 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 98 states to 98 states and 99 transitions. [2019-05-23 11:20:15,339 INFO L146 ILogger]: Start accepts. Automaton has 98 states and 99 transitions. Word has length 90 [2019-05-23 11:20:15,340 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:15,343 INFO L146 ILogger]: Abstraction has 98 states and 99 transitions. [2019-05-23 11:20:15,343 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:20:15,343 INFO L146 ILogger]: Start isEmpty. Operand 98 states and 99 transitions. [2019-05-23 11:20:15,344 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 98 [2019-05-23 11:20:15,344 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:15,345 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 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] [2019-05-23 11:20:15,345 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:15,345 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:15,345 INFO L146 ILogger]: Analyzing trace with hash 1556566592, now seen corresponding path program 4 times [2019-05-23 11:20:15,345 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:15,346 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:15,350 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:15,350 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:15,350 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:15,364 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:15,559 INFO L146 ILogger]: Checked inductivity of 211 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:20:15,560 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:15,560 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:15,575 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:20:15,599 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:20:15,599 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:15,600 INFO L146 ILogger]: Trace formula consists of 150 conjuncts, 57 conjunts are in the unsatisfiable core [2019-05-23 11:20:15,605 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:16,867 INFO L146 ILogger]: treesize reduction 20, result has 74.0 percent of original size [2019-05-23 11:20:16,868 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 45 treesize of output 69 [2019-05-23 11:20:16,871 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:16,873 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:16,873 INFO L146 ILogger]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:16,873 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 5 variables, input treesize:45, output treesize:3 [2019-05-23 11:20:17,002 INFO L146 ILogger]: Checked inductivity of 211 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2019-05-23 11:20:17,022 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:17,022 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 24] total 33 [2019-05-23 11:20:17,022 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:20:17,023 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:20:17,024 INFO L146 ILogger]: CoverageRelationStatistics Valid=175, Invalid=881, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:20:17,024 INFO L146 ILogger]: Start difference. First operand 98 states and 99 transitions. Second operand 33 states. [2019-05-23 11:20:19,892 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:19,893 INFO L146 ILogger]: Finished difference Result 162 states and 165 transitions. [2019-05-23 11:20:19,893 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-05-23 11:20:19,893 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 97 [2019-05-23 11:20:19,894 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:19,895 INFO L146 ILogger]: With dead ends: 162 [2019-05-23 11:20:19,895 INFO L146 ILogger]: Without dead ends: 133 [2019-05-23 11:20:19,899 INFO L146 ILogger]: 0 DeclaredPredicates, 142 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1151 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=752, Invalid=3804, Unknown=0, NotChecked=0, Total=4556 [2019-05-23 11:20:19,900 INFO L146 ILogger]: Start minimizeSevpa. Operand 133 states. [2019-05-23 11:20:19,905 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 133 to 117. [2019-05-23 11:20:19,906 INFO L146 ILogger]: Start removeUnreachable. Operand 117 states. [2019-05-23 11:20:19,906 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 117 states to 117 states and 118 transitions. [2019-05-23 11:20:19,906 INFO L146 ILogger]: Start accepts. Automaton has 117 states and 118 transitions. Word has length 97 [2019-05-23 11:20:19,907 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:19,907 INFO L146 ILogger]: Abstraction has 117 states and 118 transitions. [2019-05-23 11:20:19,907 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:20:19,907 INFO L146 ILogger]: Start isEmpty. Operand 117 states and 118 transitions. [2019-05-23 11:20:19,908 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 117 [2019-05-23 11:20:19,909 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:19,909 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 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] [2019-05-23 11:20:19,909 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:19,909 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:19,910 INFO L146 ILogger]: Analyzing trace with hash -606207714, now seen corresponding path program 5 times [2019-05-23 11:20:19,910 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:19,910 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:19,911 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:19,911 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:19,911 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:19,926 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:20,064 INFO L146 ILogger]: Checked inductivity of 287 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-05-23 11:20:20,064 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:20,064 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:20,073 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:20:20,110 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2019-05-23 11:20:20,111 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:20,112 INFO L146 ILogger]: Trace formula consists of 208 conjuncts, 11 conjunts are in the unsatisfiable core [2019-05-23 11:20:20,114 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:20,135 INFO L146 ILogger]: Checked inductivity of 287 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-05-23 11:20:20,164 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:20,164 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2019-05-23 11:20:20,165 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:20:20,165 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:20:20,165 INFO L146 ILogger]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:20:20,166 INFO L146 ILogger]: Start difference. First operand 117 states and 118 transitions. Second operand 13 states. [2019-05-23 11:20:20,264 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:20,264 INFO L146 ILogger]: Finished difference Result 171 states and 173 transitions. [2019-05-23 11:20:20,264 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:20:20,265 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 116 [2019-05-23 11:20:20,265 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:20,266 INFO L146 ILogger]: With dead ends: 171 [2019-05-23 11:20:20,266 INFO L146 ILogger]: Without dead ends: 130 [2019-05-23 11:20:20,266 INFO L146 ILogger]: 0 DeclaredPredicates, 127 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:20:20,267 INFO L146 ILogger]: Start minimizeSevpa. Operand 130 states. [2019-05-23 11:20:20,275 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 130 to 124. [2019-05-23 11:20:20,275 INFO L146 ILogger]: Start removeUnreachable. Operand 124 states. [2019-05-23 11:20:20,276 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 124 states to 124 states and 125 transitions. [2019-05-23 11:20:20,276 INFO L146 ILogger]: Start accepts. Automaton has 124 states and 125 transitions. Word has length 116 [2019-05-23 11:20:20,276 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:20,277 INFO L146 ILogger]: Abstraction has 124 states and 125 transitions. [2019-05-23 11:20:20,277 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:20:20,277 INFO L146 ILogger]: Start isEmpty. Operand 124 states and 125 transitions. [2019-05-23 11:20:20,278 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 124 [2019-05-23 11:20:20,279 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:20,279 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 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] [2019-05-23 11:20:20,279 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:20,279 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:20,279 INFO L146 ILogger]: Analyzing trace with hash 1380153672, now seen corresponding path program 6 times [2019-05-23 11:20:20,280 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:20,280 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:20,280 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:20,280 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:20,281 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:20,294 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:20,563 INFO L146 ILogger]: Checked inductivity of 351 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-05-23 11:20:20,564 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:20,564 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:20,580 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:20:20,618 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2019-05-23 11:20:20,618 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:20,619 INFO L146 ILogger]: Trace formula consists of 186 conjuncts, 57 conjunts are in the unsatisfiable core [2019-05-23 11:20:20,623 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:21,264 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:21,264 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2019-05-23 11:20:21,265 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:21,266 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:21,266 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:21,266 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:26, output treesize:3 [2019-05-23 11:20:21,379 INFO L146 ILogger]: Checked inductivity of 351 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2019-05-23 11:20:21,398 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:21,398 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 24] total 35 [2019-05-23 11:20:21,399 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:20:21,399 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:20:21,400 INFO L146 ILogger]: CoverageRelationStatistics Valid=206, Invalid=984, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:20:21,400 INFO L146 ILogger]: Start difference. First operand 124 states and 125 transitions. Second operand 35 states. [2019-05-23 11:20:24,527 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:24,527 INFO L146 ILogger]: Finished difference Result 200 states and 203 transitions. [2019-05-23 11:20:24,527 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2019-05-23 11:20:24,527 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 123 [2019-05-23 11:20:24,527 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:24,528 INFO L146 ILogger]: With dead ends: 200 [2019-05-23 11:20:24,528 INFO L146 ILogger]: Without dead ends: 159 [2019-05-23 11:20:24,530 INFO L146 ILogger]: 0 DeclaredPredicates, 171 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1113 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=839, Invalid=4131, Unknown=0, NotChecked=0, Total=4970 [2019-05-23 11:20:24,530 INFO L146 ILogger]: Start minimizeSevpa. Operand 159 states. [2019-05-23 11:20:24,535 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 159 to 143. [2019-05-23 11:20:24,535 INFO L146 ILogger]: Start removeUnreachable. Operand 143 states. [2019-05-23 11:20:24,536 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 143 states to 143 states and 144 transitions. [2019-05-23 11:20:24,536 INFO L146 ILogger]: Start accepts. Automaton has 143 states and 144 transitions. Word has length 123 [2019-05-23 11:20:24,537 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:24,537 INFO L146 ILogger]: Abstraction has 143 states and 144 transitions. [2019-05-23 11:20:24,537 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:20:24,537 INFO L146 ILogger]: Start isEmpty. Operand 143 states and 144 transitions. [2019-05-23 11:20:24,538 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 143 [2019-05-23 11:20:24,538 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:24,539 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 4, 4, 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] [2019-05-23 11:20:24,539 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:24,539 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:24,539 INFO L146 ILogger]: Analyzing trace with hash 98143398, now seen corresponding path program 7 times [2019-05-23 11:20:24,540 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:24,540 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:24,540 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:24,541 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:24,541 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:24,557 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:24,742 INFO L146 ILogger]: Checked inductivity of 453 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-05-23 11:20:24,743 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:24,743 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:24,752 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:24,797 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:24,798 INFO L146 ILogger]: Trace formula consists of 248 conjuncts, 13 conjunts are in the unsatisfiable core [2019-05-23 11:20:24,800 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:24,845 INFO L146 ILogger]: Checked inductivity of 453 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-05-23 11:20:24,871 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:24,872 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2019-05-23 11:20:24,872 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:20:24,872 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:20:24,873 INFO L146 ILogger]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:20:24,873 INFO L146 ILogger]: Start difference. First operand 143 states and 144 transitions. Second operand 15 states. [2019-05-23 11:20:25,126 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:25,126 INFO L146 ILogger]: Finished difference Result 209 states and 211 transitions. [2019-05-23 11:20:25,129 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-05-23 11:20:25,129 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 142 [2019-05-23 11:20:25,129 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:25,130 INFO L146 ILogger]: With dead ends: 209 [2019-05-23 11:20:25,130 INFO L146 ILogger]: Without dead ends: 156 [2019-05-23 11:20:25,131 INFO L146 ILogger]: 0 DeclaredPredicates, 155 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:20:25,131 INFO L146 ILogger]: Start minimizeSevpa. Operand 156 states. [2019-05-23 11:20:25,137 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 156 to 150. [2019-05-23 11:20:25,138 INFO L146 ILogger]: Start removeUnreachable. Operand 150 states. [2019-05-23 11:20:25,138 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 150 states to 150 states and 151 transitions. [2019-05-23 11:20:25,138 INFO L146 ILogger]: Start accepts. Automaton has 150 states and 151 transitions. Word has length 142 [2019-05-23 11:20:25,139 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:25,139 INFO L146 ILogger]: Abstraction has 150 states and 151 transitions. [2019-05-23 11:20:25,139 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:20:25,139 INFO L146 ILogger]: Start isEmpty. Operand 150 states and 151 transitions. [2019-05-23 11:20:25,140 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 150 [2019-05-23 11:20:25,140 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:25,141 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 12, 12, 4, 4, 4, 4, 4, 4, 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] [2019-05-23 11:20:25,141 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:25,141 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:25,141 INFO L146 ILogger]: Analyzing trace with hash -14302128, now seen corresponding path program 8 times [2019-05-23 11:20:25,141 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:25,142 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:25,142 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:25,142 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:25,142 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:25,157 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:26,064 INFO L146 ILogger]: Checked inductivity of 531 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-05-23 11:20:26,064 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:26,064 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:26,073 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:26,113 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:26,113 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:26,114 INFO L146 ILogger]: Trace formula consists of 259 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:20:26,116 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:26,146 INFO L146 ILogger]: Checked inductivity of 531 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-05-23 11:20:26,164 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:26,164 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2019-05-23 11:20:26,165 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:20:26,165 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:20:26,165 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:20:26,165 INFO L146 ILogger]: Start difference. First operand 150 states and 151 transitions. Second operand 16 states. [2019-05-23 11:20:26,276 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:26,276 INFO L146 ILogger]: Finished difference Result 216 states and 218 transitions. [2019-05-23 11:20:26,277 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-05-23 11:20:26,277 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 149 [2019-05-23 11:20:26,277 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:26,278 INFO L146 ILogger]: With dead ends: 216 [2019-05-23 11:20:26,278 INFO L146 ILogger]: Without dead ends: 163 [2019-05-23 11:20:26,279 INFO L146 ILogger]: 0 DeclaredPredicates, 163 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:20:26,279 INFO L146 ILogger]: Start minimizeSevpa. Operand 163 states. [2019-05-23 11:20:26,284 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 163 to 157. [2019-05-23 11:20:26,285 INFO L146 ILogger]: Start removeUnreachable. Operand 157 states. [2019-05-23 11:20:26,285 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 157 states to 157 states and 158 transitions. [2019-05-23 11:20:26,285 INFO L146 ILogger]: Start accepts. Automaton has 157 states and 158 transitions. Word has length 149 [2019-05-23 11:20:26,286 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:26,286 INFO L146 ILogger]: Abstraction has 157 states and 158 transitions. [2019-05-23 11:20:26,286 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:20:26,286 INFO L146 ILogger]: Start isEmpty. Operand 157 states and 158 transitions. [2019-05-23 11:20:26,287 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 157 [2019-05-23 11:20:26,288 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:26,288 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 13, 13, 4, 4, 4, 4, 4, 4, 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] [2019-05-23 11:20:26,288 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:26,288 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:26,288 INFO L146 ILogger]: Analyzing trace with hash -1803191962, now seen corresponding path program 9 times [2019-05-23 11:20:26,289 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:26,289 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:26,289 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:26,289 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:26,290 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:26,303 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:26,484 INFO L146 ILogger]: Checked inductivity of 616 backedges. 0 proven. 559 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-05-23 11:20:26,484 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:26,485 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:26,493 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:26,566 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2019-05-23 11:20:26,567 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:26,568 INFO L146 ILogger]: Trace formula consists of 270 conjuncts, 15 conjunts are in the unsatisfiable core [2019-05-23 11:20:26,571 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:26,624 INFO L146 ILogger]: Checked inductivity of 616 backedges. 0 proven. 559 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-05-23 11:20:26,642 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:26,643 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2019-05-23 11:20:26,643 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:20:26,643 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:20:26,644 INFO L146 ILogger]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:20:26,644 INFO L146 ILogger]: Start difference. First operand 157 states and 158 transitions. Second operand 17 states. [2019-05-23 11:20:26,773 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:26,774 INFO L146 ILogger]: Finished difference Result 223 states and 225 transitions. [2019-05-23 11:20:26,777 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-05-23 11:20:26,777 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 156 [2019-05-23 11:20:26,778 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:26,778 INFO L146 ILogger]: With dead ends: 223 [2019-05-23 11:20:26,778 INFO L146 ILogger]: Without dead ends: 170 [2019-05-23 11:20:26,779 INFO L146 ILogger]: 0 DeclaredPredicates, 171 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:20:26,779 INFO L146 ILogger]: Start minimizeSevpa. Operand 170 states. [2019-05-23 11:20:26,784 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 170 to 164. [2019-05-23 11:20:26,784 INFO L146 ILogger]: Start removeUnreachable. Operand 164 states. [2019-05-23 11:20:26,785 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 164 states to 164 states and 165 transitions. [2019-05-23 11:20:26,785 INFO L146 ILogger]: Start accepts. Automaton has 164 states and 165 transitions. Word has length 156 [2019-05-23 11:20:26,785 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:26,785 INFO L146 ILogger]: Abstraction has 164 states and 165 transitions. [2019-05-23 11:20:26,785 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:20:26,785 INFO L146 ILogger]: Start isEmpty. Operand 164 states and 165 transitions. [2019-05-23 11:20:26,786 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 164 [2019-05-23 11:20:26,786 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:26,786 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 14, 14, 4, 4, 4, 4, 4, 4, 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] [2019-05-23 11:20:26,787 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:26,787 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:26,787 INFO L146 ILogger]: Analyzing trace with hash 676986768, now seen corresponding path program 10 times [2019-05-23 11:20:26,787 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:26,787 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:26,788 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:26,788 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:26,788 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:26,802 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:27,778 INFO L146 ILogger]: Checked inductivity of 708 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-05-23 11:20:27,778 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:27,778 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:27,787 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:20:27,835 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:20:27,835 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:27,837 INFO L146 ILogger]: Trace formula consists of 244 conjuncts, 69 conjunts are in the unsatisfiable core [2019-05-23 11:20:27,839 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:28,773 WARN L146 ILogger]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2019-05-23 11:20:29,182 INFO L146 ILogger]: treesize reduction 20, result has 74.0 percent of original size [2019-05-23 11:20:29,183 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 45 treesize of output 69 [2019-05-23 11:20:29,185 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:29,209 INFO L146 ILogger]: treesize reduction 41, result has 6.8 percent of original size [2019-05-23 11:20:29,209 INFO L146 ILogger]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:29,209 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 5 variables, input treesize:45, output treesize:3 [2019-05-23 11:20:29,394 INFO L146 ILogger]: Checked inductivity of 708 backedges. 0 proven. 353 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2019-05-23 11:20:29,413 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:29,413 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 30] total 45 [2019-05-23 11:20:29,414 INFO L146 ILogger]: Interpolant automaton has 45 states [2019-05-23 11:20:29,414 INFO L146 ILogger]: Constructing interpolant automaton starting with 45 interpolants. [2019-05-23 11:20:29,414 INFO L146 ILogger]: CoverageRelationStatistics Valid=333, Invalid=1647, Unknown=0, NotChecked=0, Total=1980 [2019-05-23 11:20:29,415 INFO L146 ILogger]: Start difference. First operand 164 states and 165 transitions. Second operand 45 states. [2019-05-23 11:20:32,743 WARN L146 ILogger]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2019-05-23 11:20:34,516 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:34,516 INFO L146 ILogger]: Finished difference Result 252 states and 255 transitions. [2019-05-23 11:20:34,517 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2019-05-23 11:20:34,517 INFO L146 ILogger]: Start accepts. Automaton has 45 states. Word has length 163 [2019-05-23 11:20:34,517 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:34,518 INFO L146 ILogger]: With dead ends: 252 [2019-05-23 11:20:34,518 INFO L146 ILogger]: Without dead ends: 199 [2019-05-23 11:20:34,522 INFO L146 ILogger]: 0 DeclaredPredicates, 231 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2508 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=1263, Invalid=8049, Unknown=0, NotChecked=0, Total=9312 [2019-05-23 11:20:34,522 INFO L146 ILogger]: Start minimizeSevpa. Operand 199 states. [2019-05-23 11:20:34,528 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 199 to 183. [2019-05-23 11:20:34,528 INFO L146 ILogger]: Start removeUnreachable. Operand 183 states. [2019-05-23 11:20:34,529 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 183 states to 183 states and 184 transitions. [2019-05-23 11:20:34,529 INFO L146 ILogger]: Start accepts. Automaton has 183 states and 184 transitions. Word has length 163 [2019-05-23 11:20:34,529 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:34,529 INFO L146 ILogger]: Abstraction has 183 states and 184 transitions. [2019-05-23 11:20:34,529 INFO L146 ILogger]: Interpolant automaton has 45 states. [2019-05-23 11:20:34,530 INFO L146 ILogger]: Start isEmpty. Operand 183 states and 184 transitions. [2019-05-23 11:20:34,530 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 183 [2019-05-23 11:20:34,530 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:34,531 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 15, 15, 5, 5, 5, 5, 5, 5, 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] [2019-05-23 11:20:34,531 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:34,531 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:34,531 INFO L146 ILogger]: Analyzing trace with hash -1524950802, now seen corresponding path program 11 times [2019-05-23 11:20:34,532 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:34,532 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:34,532 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:34,532 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:34,533 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:34,548 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:34,753 INFO L146 ILogger]: Checked inductivity of 850 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2019-05-23 11:20:34,753 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:34,753 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:34,761 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:20:34,830 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2019-05-23 11:20:34,831 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:34,832 INFO L146 ILogger]: Trace formula consists of 310 conjuncts, 17 conjunts are in the unsatisfiable core [2019-05-23 11:20:34,835 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:34,886 INFO L146 ILogger]: Checked inductivity of 850 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2019-05-23 11:20:34,905 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:34,905 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2019-05-23 11:20:34,906 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:20:34,906 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:20:34,907 INFO L146 ILogger]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:20:34,907 INFO L146 ILogger]: Start difference. First operand 183 states and 184 transitions. Second operand 19 states. [2019-05-23 11:20:35,036 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:35,037 INFO L146 ILogger]: Finished difference Result 261 states and 263 transitions. [2019-05-23 11:20:35,037 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:20:35,037 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 182 [2019-05-23 11:20:35,038 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:35,039 INFO L146 ILogger]: With dead ends: 261 [2019-05-23 11:20:35,039 INFO L146 ILogger]: Without dead ends: 196 [2019-05-23 11:20:35,040 INFO L146 ILogger]: 0 DeclaredPredicates, 199 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:20:35,040 INFO L146 ILogger]: Start minimizeSevpa. Operand 196 states. [2019-05-23 11:20:35,045 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 196 to 190. [2019-05-23 11:20:35,045 INFO L146 ILogger]: Start removeUnreachable. Operand 190 states. [2019-05-23 11:20:35,046 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 190 states to 190 states and 191 transitions. [2019-05-23 11:20:35,046 INFO L146 ILogger]: Start accepts. Automaton has 190 states and 191 transitions. Word has length 182 [2019-05-23 11:20:35,047 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:35,047 INFO L146 ILogger]: Abstraction has 190 states and 191 transitions. [2019-05-23 11:20:35,047 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:20:35,047 INFO L146 ILogger]: Start isEmpty. Operand 190 states and 191 transitions. [2019-05-23 11:20:35,048 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 190 [2019-05-23 11:20:35,048 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:35,048 INFO L146 ILogger]: trace histogram [16, 16, 16, 16, 16, 16, 16, 5, 5, 5, 5, 5, 5, 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] [2019-05-23 11:20:35,048 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:35,048 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:35,049 INFO L146 ILogger]: Analyzing trace with hash 771808920, now seen corresponding path program 12 times [2019-05-23 11:20:35,049 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:35,049 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:35,049 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:35,050 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:35,050 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:35,064 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:35,349 INFO L146 ILogger]: Checked inductivity of 956 backedges. 0 proven. 856 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2019-05-23 11:20:35,349 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:35,349 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 11:20:35,358 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:20:35,414 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2019-05-23 11:20:35,414 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:35,416 INFO L146 ILogger]: Trace formula consists of 299 conjuncts, 79 conjunts are in the unsatisfiable core [2019-05-23 11:20:35,420 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:36,943 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:36,943 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 29 [2019-05-23 11:20:36,944 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:36,946 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:20:36,946 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:36,946 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:37, output treesize:3 [2019-05-23 11:20:37,230 INFO L146 ILogger]: Checked inductivity of 956 backedges. 0 proven. 527 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2019-05-23 11:20:37,248 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:37,249 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 35] total 52 [2019-05-23 11:20:37,249 INFO L146 ILogger]: Interpolant automaton has 52 states [2019-05-23 11:20:37,249 INFO L146 ILogger]: Constructing interpolant automaton starting with 52 interpolants. [2019-05-23 11:20:37,250 INFO L146 ILogger]: CoverageRelationStatistics Valid=458, Invalid=2194, Unknown=0, NotChecked=0, Total=2652 [2019-05-23 11:20:37,250 INFO L146 ILogger]: Start difference. First operand 190 states and 191 transitions. Second operand 52 states. [2019-05-23 11:20:38,951 WARN L146 ILogger]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2019-05-23 11:20:42,957 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:42,957 INFO L146 ILogger]: Finished difference Result 290 states and 293 transitions. [2019-05-23 11:20:42,962 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2019-05-23 11:20:42,962 INFO L146 ILogger]: Start accepts. Automaton has 52 states. Word has length 189 [2019-05-23 11:20:42,963 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:42,963 INFO L146 ILogger]: With dead ends: 290 [2019-05-23 11:20:42,964 INFO L146 ILogger]: Without dead ends: 225 [2019-05-23 11:20:42,967 INFO L146 ILogger]: 0 DeclaredPredicates, 264 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3133 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=1603, Invalid=10169, Unknown=0, NotChecked=0, Total=11772 [2019-05-23 11:20:42,967 INFO L146 ILogger]: Start minimizeSevpa. Operand 225 states. [2019-05-23 11:20:42,972 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 225 to 209. [2019-05-23 11:20:42,972 INFO L146 ILogger]: Start removeUnreachable. Operand 209 states. [2019-05-23 11:20:42,973 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 209 states to 209 states and 210 transitions. [2019-05-23 11:20:42,973 INFO L146 ILogger]: Start accepts. Automaton has 209 states and 210 transitions. Word has length 189 [2019-05-23 11:20:42,973 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:42,973 INFO L146 ILogger]: Abstraction has 209 states and 210 transitions. [2019-05-23 11:20:42,973 INFO L146 ILogger]: Interpolant automaton has 52 states. [2019-05-23 11:20:42,973 INFO L146 ILogger]: Start isEmpty. Operand 209 states and 210 transitions. [2019-05-23 11:20:42,974 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 209 [2019-05-23 11:20:42,974 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:42,974 INFO L146 ILogger]: trace histogram [17, 17, 17, 17, 17, 17, 17, 6, 6, 6, 6, 6, 6, 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] [2019-05-23 11:20:42,974 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:42,975 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:42,975 INFO L146 ILogger]: Analyzing trace with hash -998294410, now seen corresponding path program 13 times [2019-05-23 11:20:42,975 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:42,975 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:42,975 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:42,976 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:42,976 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:42,990 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:43,381 INFO L146 ILogger]: Checked inductivity of 1124 backedges. 0 proven. 969 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-05-23 11:20:43,381 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:43,381 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 11:20:43,399 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:43,449 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:43,450 INFO L146 ILogger]: Trace formula consists of 350 conjuncts, 19 conjunts are in the unsatisfiable core [2019-05-23 11:20:43,452 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:43,491 INFO L146 ILogger]: Checked inductivity of 1124 backedges. 0 proven. 969 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-05-23 11:20:43,510 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:43,510 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2019-05-23 11:20:43,511 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:20:43,511 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:20:43,512 INFO L146 ILogger]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:20:43,512 INFO L146 ILogger]: Start difference. First operand 209 states and 210 transitions. Second operand 21 states. [2019-05-23 11:20:43,629 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:43,630 INFO L146 ILogger]: Finished difference Result 299 states and 301 transitions. [2019-05-23 11:20:43,630 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-05-23 11:20:43,630 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 208 [2019-05-23 11:20:43,631 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:43,632 INFO L146 ILogger]: With dead ends: 299 [2019-05-23 11:20:43,632 INFO L146 ILogger]: Without dead ends: 222 [2019-05-23 11:20:43,632 INFO L146 ILogger]: 0 DeclaredPredicates, 227 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:20:43,633 INFO L146 ILogger]: Start minimizeSevpa. Operand 222 states. [2019-05-23 11:20:43,639 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 222 to 216. [2019-05-23 11:20:43,639 INFO L146 ILogger]: Start removeUnreachable. Operand 216 states. [2019-05-23 11:20:43,640 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 216 states to 216 states and 217 transitions. [2019-05-23 11:20:43,640 INFO L146 ILogger]: Start accepts. Automaton has 216 states and 217 transitions. Word has length 208 [2019-05-23 11:20:43,640 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:43,640 INFO L146 ILogger]: Abstraction has 216 states and 217 transitions. [2019-05-23 11:20:43,640 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:20:43,640 INFO L146 ILogger]: Start isEmpty. Operand 216 states and 217 transitions. [2019-05-23 11:20:43,641 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 216 [2019-05-23 11:20:43,641 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:43,642 INFO L146 ILogger]: trace histogram [18, 18, 18, 18, 18, 18, 18, 6, 6, 6, 6, 6, 6, 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] [2019-05-23 11:20:43,642 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:43,642 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:43,642 INFO L146 ILogger]: Analyzing trace with hash -1159863904, now seen corresponding path program 14 times [2019-05-23 11:20:43,642 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:43,642 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:43,643 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:43,643 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:20:43,643 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:43,658 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:43,931 INFO L146 ILogger]: Checked inductivity of 1244 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-05-23 11:20:43,931 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:43,931 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 11:20:43,941 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:20:43,996 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:20:43,997 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:43,998 INFO L146 ILogger]: Trace formula consists of 361 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:20:44,000 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:44,040 INFO L146 ILogger]: Checked inductivity of 1244 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-05-23 11:20:44,060 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:44,060 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2019-05-23 11:20:44,060 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:20:44,061 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:20:44,061 INFO L146 ILogger]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:20:44,061 INFO L146 ILogger]: Start difference. First operand 216 states and 217 transitions. Second operand 22 states. [2019-05-23 11:20:44,230 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:44,230 INFO L146 ILogger]: Finished difference Result 306 states and 308 transitions. [2019-05-23 11:20:44,231 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:20:44,231 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 215 [2019-05-23 11:20:44,231 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:44,232 INFO L146 ILogger]: With dead ends: 306 [2019-05-23 11:20:44,233 INFO L146 ILogger]: Without dead ends: 229 [2019-05-23 11:20:44,233 INFO L146 ILogger]: 0 DeclaredPredicates, 235 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:20:44,234 INFO L146 ILogger]: Start minimizeSevpa. Operand 229 states. [2019-05-23 11:20:44,239 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 229 to 223. [2019-05-23 11:20:44,239 INFO L146 ILogger]: Start removeUnreachable. Operand 223 states. [2019-05-23 11:20:44,240 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 223 states to 223 states and 224 transitions. [2019-05-23 11:20:44,240 INFO L146 ILogger]: Start accepts. Automaton has 223 states and 224 transitions. Word has length 215 [2019-05-23 11:20:44,241 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:44,241 INFO L146 ILogger]: Abstraction has 223 states and 224 transitions. [2019-05-23 11:20:44,241 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:20:44,241 INFO L146 ILogger]: Start isEmpty. Operand 223 states and 224 transitions. [2019-05-23 11:20:44,244 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 223 [2019-05-23 11:20:44,244 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:44,245 INFO L146 ILogger]: trace histogram [19, 19, 19, 19, 19, 19, 19, 6, 6, 6, 6, 6, 6, 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] [2019-05-23 11:20:44,245 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:44,245 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:44,245 INFO L146 ILogger]: Analyzing trace with hash -1415775946, now seen corresponding path program 15 times [2019-05-23 11:20:44,246 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:44,246 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:44,247 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:44,250 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:44,250 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:44,266 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:44,612 INFO L146 ILogger]: Checked inductivity of 1371 backedges. 0 proven. 1216 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-05-23 11:20:44,613 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:44,613 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 11:20:44,623 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:20:44,708 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2019-05-23 11:20:44,708 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:44,710 INFO L146 ILogger]: Trace formula consists of 372 conjuncts, 21 conjunts are in the unsatisfiable core [2019-05-23 11:20:44,713 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:44,868 INFO L146 ILogger]: Checked inductivity of 1371 backedges. 0 proven. 1216 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-05-23 11:20:44,900 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:44,901 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2019-05-23 11:20:44,901 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:20:44,902 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:20:44,902 INFO L146 ILogger]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:20:44,902 INFO L146 ILogger]: Start difference. First operand 223 states and 224 transitions. Second operand 23 states. [2019-05-23 11:20:45,801 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:45,801 INFO L146 ILogger]: Finished difference Result 313 states and 315 transitions. [2019-05-23 11:20:45,801 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-05-23 11:20:45,801 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 222 [2019-05-23 11:20:45,802 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:45,803 INFO L146 ILogger]: With dead ends: 313 [2019-05-23 11:20:45,803 INFO L146 ILogger]: Without dead ends: 236 [2019-05-23 11:20:45,804 INFO L146 ILogger]: 0 DeclaredPredicates, 243 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:20:45,804 INFO L146 ILogger]: Start minimizeSevpa. Operand 236 states. [2019-05-23 11:20:45,810 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 236 to 230. [2019-05-23 11:20:45,810 INFO L146 ILogger]: Start removeUnreachable. Operand 230 states. [2019-05-23 11:20:45,811 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 230 states to 230 states and 231 transitions. [2019-05-23 11:20:45,811 INFO L146 ILogger]: Start accepts. Automaton has 230 states and 231 transitions. Word has length 222 [2019-05-23 11:20:45,812 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:45,812 INFO L146 ILogger]: Abstraction has 230 states and 231 transitions. [2019-05-23 11:20:45,812 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:20:45,812 INFO L146 ILogger]: Start isEmpty. Operand 230 states and 231 transitions. [2019-05-23 11:20:45,813 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 230 [2019-05-23 11:20:45,813 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:45,813 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 20, 20, 6, 6, 6, 6, 6, 6, 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] [2019-05-23 11:20:45,814 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:45,814 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:45,814 INFO L146 ILogger]: Analyzing trace with hash 1324764384, now seen corresponding path program 16 times [2019-05-23 11:20:45,814 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:45,814 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:45,815 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:45,815 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:45,815 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:45,832 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:46,625 INFO L146 ILogger]: Checked inductivity of 1505 backedges. 0 proven. 1350 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-05-23 11:20:46,625 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:46,626 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 11:20:46,636 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:20:46,702 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:20:46,702 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:46,704 INFO L146 ILogger]: Trace formula consists of 338 conjuncts, 81 conjunts are in the unsatisfiable core [2019-05-23 11:20:46,710 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:48,119 INFO L146 ILogger]: treesize reduction 20, result has 74.0 percent of original size [2019-05-23 11:20:48,119 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 45 treesize of output 69 [2019-05-23 11:20:48,121 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:20:48,126 INFO L146 ILogger]: treesize reduction 41, result has 6.8 percent of original size [2019-05-23 11:20:48,127 INFO L146 ILogger]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:20:48,127 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 5 variables, input treesize:45, output treesize:3 [2019-05-23 11:20:48,425 INFO L146 ILogger]: Checked inductivity of 1505 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 693 trivial. 0 not checked. [2019-05-23 11:20:48,444 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:48,444 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 36] total 57 [2019-05-23 11:20:48,445 INFO L146 ILogger]: Interpolant automaton has 57 states [2019-05-23 11:20:48,445 INFO L146 ILogger]: Constructing interpolant automaton starting with 57 interpolants. [2019-05-23 11:20:48,446 INFO L146 ILogger]: CoverageRelationStatistics Valid=547, Invalid=2645, Unknown=0, NotChecked=0, Total=3192 [2019-05-23 11:20:48,447 INFO L146 ILogger]: Start difference. First operand 230 states and 231 transitions. Second operand 57 states. [2019-05-23 11:20:51,354 WARN L146 ILogger]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2019-05-23 11:20:55,117 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:55,117 INFO L146 ILogger]: Finished difference Result 342 states and 345 transitions. [2019-05-23 11:20:55,121 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2019-05-23 11:20:55,122 INFO L146 ILogger]: Start accepts. Automaton has 57 states. Word has length 229 [2019-05-23 11:20:55,122 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:55,123 INFO L146 ILogger]: With dead ends: 342 [2019-05-23 11:20:55,123 INFO L146 ILogger]: Without dead ends: 265 [2019-05-23 11:20:55,130 INFO L146 ILogger]: 0 DeclaredPredicates, 315 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3975 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=1806, Invalid=12714, Unknown=0, NotChecked=0, Total=14520 [2019-05-23 11:20:55,130 INFO L146 ILogger]: Start minimizeSevpa. Operand 265 states. [2019-05-23 11:20:55,138 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 265 to 249. [2019-05-23 11:20:55,138 INFO L146 ILogger]: Start removeUnreachable. Operand 249 states. [2019-05-23 11:20:55,139 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 249 states to 249 states and 250 transitions. [2019-05-23 11:20:55,139 INFO L146 ILogger]: Start accepts. Automaton has 249 states and 250 transitions. Word has length 229 [2019-05-23 11:20:55,139 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:55,140 INFO L146 ILogger]: Abstraction has 249 states and 250 transitions. [2019-05-23 11:20:55,140 INFO L146 ILogger]: Interpolant automaton has 57 states. [2019-05-23 11:20:55,140 INFO L146 ILogger]: Start isEmpty. Operand 249 states and 250 transitions. [2019-05-23 11:20:55,141 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 249 [2019-05-23 11:20:55,141 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:55,141 INFO L146 ILogger]: trace histogram [21, 21, 21, 21, 21, 21, 21, 7, 7, 7, 7, 7, 7, 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] [2019-05-23 11:20:55,142 INFO L146 ILogger]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:55,142 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:55,142 INFO L146 ILogger]: Analyzing trace with hash 925839550, now seen corresponding path program 17 times [2019-05-23 11:20:55,142 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:55,142 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:55,143 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:55,143 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:55,143 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:55,161 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:56,893 INFO L146 ILogger]: Checked inductivity of 1713 backedges. 0 proven. 1491 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2019-05-23 11:20:56,893 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:56,893 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:56,902 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:20:56,984 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2019-05-23 11:20:56,985 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:56,986 INFO L146 ILogger]: Trace formula consists of 412 conjuncts, 23 conjunts are in the unsatisfiable core [2019-05-23 11:20:56,989 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:20:57,080 INFO L146 ILogger]: Checked inductivity of 1713 backedges. 0 proven. 1491 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2019-05-23 11:20:57,110 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:20:57,110 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2019-05-23 11:20:57,111 INFO L146 ILogger]: Interpolant automaton has 25 states [2019-05-23 11:20:57,111 INFO L146 ILogger]: Constructing interpolant automaton starting with 25 interpolants. [2019-05-23 11:20:57,111 INFO L146 ILogger]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:20:57,112 INFO L146 ILogger]: Start difference. First operand 249 states and 250 transitions. Second operand 25 states. [2019-05-23 11:20:57,345 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:20:57,345 INFO L146 ILogger]: Finished difference Result 351 states and 353 transitions. [2019-05-23 11:20:57,345 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:20:57,345 INFO L146 ILogger]: Start accepts. Automaton has 25 states. Word has length 248 [2019-05-23 11:20:57,346 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:20:57,347 INFO L146 ILogger]: With dead ends: 351 [2019-05-23 11:20:57,347 INFO L146 ILogger]: Without dead ends: 262 [2019-05-23 11:20:57,348 INFO L146 ILogger]: 0 DeclaredPredicates, 271 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:20:57,349 INFO L146 ILogger]: Start minimizeSevpa. Operand 262 states. [2019-05-23 11:20:57,354 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 262 to 256. [2019-05-23 11:20:57,355 INFO L146 ILogger]: Start removeUnreachable. Operand 256 states. [2019-05-23 11:20:57,355 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 256 states to 256 states and 257 transitions. [2019-05-23 11:20:57,356 INFO L146 ILogger]: Start accepts. Automaton has 256 states and 257 transitions. Word has length 248 [2019-05-23 11:20:57,356 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:20:57,356 INFO L146 ILogger]: Abstraction has 256 states and 257 transitions. [2019-05-23 11:20:57,356 INFO L146 ILogger]: Interpolant automaton has 25 states. [2019-05-23 11:20:57,356 INFO L146 ILogger]: Start isEmpty. Operand 256 states and 257 transitions. [2019-05-23 11:20:57,357 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 256 [2019-05-23 11:20:57,357 INFO L146 ILogger]: Found error trace [2019-05-23 11:20:57,358 INFO L146 ILogger]: trace histogram [22, 22, 22, 22, 22, 22, 22, 7, 7, 7, 7, 7, 7, 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] [2019-05-23 11:20:57,358 INFO L146 ILogger]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:20:57,358 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:20:57,358 INFO L146 ILogger]: Analyzing trace with hash 1166795752, now seen corresponding path program 18 times [2019-05-23 11:20:57,358 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:20:57,359 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:20:57,359 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:57,359 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:20:57,359 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:20:57,377 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:58,662 INFO L146 ILogger]: Checked inductivity of 1861 backedges. 0 proven. 1639 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2019-05-23 11:20:58,663 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:20:58,663 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:20:58,671 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:20:58,753 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2019-05-23 11:20:58,753 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:20:58,755 INFO L146 ILogger]: Trace formula consists of 368 conjuncts, 91 conjunts are in the unsatisfiable core [2019-05-23 11:20:58,760 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:00,503 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:21:00,504 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 29 [2019-05-23 11:21:00,505 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:21:00,506 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:21:00,506 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:21:00,506 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:37, output treesize:3 [2019-05-23 11:21:00,965 INFO L146 ILogger]: Checked inductivity of 1861 backedges. 0 proven. 1066 refuted. 0 times theorem prover too weak. 795 trivial. 0 not checked. [2019-05-23 11:21:00,984 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:00,984 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 41] total 64 [2019-05-23 11:21:00,985 INFO L146 ILogger]: Interpolant automaton has 64 states [2019-05-23 11:21:00,985 INFO L146 ILogger]: Constructing interpolant automaton starting with 64 interpolants. [2019-05-23 11:21:00,986 INFO L146 ILogger]: CoverageRelationStatistics Valid=701, Invalid=3331, Unknown=0, NotChecked=0, Total=4032 [2019-05-23 11:21:00,986 INFO L146 ILogger]: Start difference. First operand 256 states and 257 transitions. Second operand 64 states. [2019-05-23 11:21:08,544 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:08,544 INFO L146 ILogger]: Finished difference Result 380 states and 383 transitions. [2019-05-23 11:21:08,544 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2019-05-23 11:21:08,545 INFO L146 ILogger]: Start accepts. Automaton has 64 states. Word has length 255 [2019-05-23 11:21:08,545 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:08,547 INFO L146 ILogger]: With dead ends: 380 [2019-05-23 11:21:08,547 INFO L146 ILogger]: Without dead ends: 291 [2019-05-23 11:21:08,549 INFO L146 ILogger]: 0 DeclaredPredicates, 348 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4741 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=2211, Invalid=15345, Unknown=0, NotChecked=0, Total=17556 [2019-05-23 11:21:08,550 INFO L146 ILogger]: Start minimizeSevpa. Operand 291 states. [2019-05-23 11:21:08,556 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 291 to 275. [2019-05-23 11:21:08,556 INFO L146 ILogger]: Start removeUnreachable. Operand 275 states. [2019-05-23 11:21:08,557 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 275 states to 275 states and 276 transitions. [2019-05-23 11:21:08,557 INFO L146 ILogger]: Start accepts. Automaton has 275 states and 276 transitions. Word has length 255 [2019-05-23 11:21:08,557 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:08,557 INFO L146 ILogger]: Abstraction has 275 states and 276 transitions. [2019-05-23 11:21:08,558 INFO L146 ILogger]: Interpolant automaton has 64 states. [2019-05-23 11:21:08,558 INFO L146 ILogger]: Start isEmpty. Operand 275 states and 276 transitions. [2019-05-23 11:21:08,558 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 275 [2019-05-23 11:21:08,559 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:08,559 INFO L146 ILogger]: trace histogram [23, 23, 23, 23, 23, 23, 23, 8, 8, 8, 8, 8, 8, 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] [2019-05-23 11:21:08,559 INFO L146 ILogger]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:08,559 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:08,559 INFO L146 ILogger]: Analyzing trace with hash -892867514, now seen corresponding path program 19 times [2019-05-23 11:21:08,559 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:08,559 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:08,560 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:08,560 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:08,560 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:08,579 INFO L146 ILogger]: Conjunction of SSA is unsat