java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/reducercommutativity/sum20_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:24:25,631 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:24:25,633 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:24:25,645 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:24:25,646 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:24:25,647 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:24:25,648 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:24:25,650 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:24:25,652 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:24:25,653 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:24:25,654 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:24:25,654 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:24:25,655 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:24:25,656 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:24:25,657 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:24:25,658 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:24:25,659 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:24:25,661 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:24:25,663 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:24:25,665 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:24:25,666 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:24:25,667 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:24:25,670 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:24:25,670 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:24:25,670 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:24:25,671 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:24:25,672 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:24:25,673 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:24:25,673 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:24:25,677 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:24:25,678 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:24:25,678 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:24:25,679 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:24:25,680 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:24:25,683 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:24:25,683 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:24:25,683 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:24:25,684 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:24:25,688 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:24:25,688 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:24:25,719 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:24:25,719 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:24:25,720 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:24:25,721 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:24:25,721 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:24:25,721 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:24:25,721 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:24:25,722 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:24:25,722 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:24:25,723 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:24:25,723 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:24:25,723 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:24:25,723 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:24:25,723 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:24:25,724 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:24:25,725 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:24:25,725 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:24:25,725 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:24:25,725 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:24:25,726 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:24:25,726 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:24:25,726 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:24:25,727 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:24:25,727 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:24:25,727 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:24:25,727 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:24:25,727 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:24:25,728 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:24:25,728 INFO L146 ILogger]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Command for external solver -> z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement [2019-05-23 11:24:25,780 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:24:25,792 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:24:25,795 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:24:25,796 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:24:25,797 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:24:25,798 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/reducercommutativity/sum20_true-unreach-call.i [2019-05-23 11:24:25,854 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2051ebaad/d82800b4d6614a498a8e4f03ef5dfb64/FLAG638a0fcce [2019-05-23 11:24:26,278 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:24:26,279 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/reducercommutativity/sum20_true-unreach-call.i [2019-05-23 11:24:26,285 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2051ebaad/d82800b4d6614a498a8e4f03ef5dfb64/FLAG638a0fcce [2019-05-23 11:24:26,654 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2051ebaad/d82800b4d6614a498a8e4f03ef5dfb64 [2019-05-23 11:24:26,666 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:24:26,668 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:24:26,669 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:24:26,669 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:24:26,673 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:24:26,674 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:24:26" (1/1) ... [2019-05-23 11:24:26,677 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e5e7328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:26, skipping insertion in model container [2019-05-23 11:24:26,678 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:24:26" (1/1) ... [2019-05-23 11:24:26,686 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:24:26,704 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:24:26,937 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:24:26,948 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:24:26,979 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:24:27,000 INFO L146 ILogger]: Completed translation [2019-05-23 11:24:27,001 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:27 WrapperNode [2019-05-23 11:24:27,001 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:24:27,002 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:24:27,003 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:24:27,003 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:24:27,013 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:27" (1/1) ... [2019-05-23 11:24:27,024 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:27" (1/1) ... [2019-05-23 11:24:27,062 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:24:27,062 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:24:27,062 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:24:27,063 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:24:27,074 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:27" (1/1) ... [2019-05-23 11:24:27,074 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:27" (1/1) ... [2019-05-23 11:24:27,077 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:27" (1/1) ... [2019-05-23 11:24:27,077 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:27" (1/1) ... [2019-05-23 11:24:27,084 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:27" (1/1) ... [2019-05-23 11:24:27,189 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:27" (1/1) ... [2019-05-23 11:24:27,196 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:27" (1/1) ... [2019-05-23 11:24:27,199 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:24:27,200 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:24:27,200 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:24:27,200 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:24:27,201 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 [2019-05-23 11:24:27,258 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:24:27,258 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:24:27,258 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:24:27,259 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:24:27,259 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:24:27,259 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:24:27,881 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:24:27,882 INFO L146 ILogger]: Removed 15 assume(true) statements. [2019-05-23 11:24:27,883 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:24:27 BoogieIcfgContainer [2019-05-23 11:24:27,883 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:24:27,884 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:24:27,885 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:24:27,888 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:24:27,888 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:24:26" (1/3) ... [2019-05-23 11:24:27,889 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b7c071a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:24:27, skipping insertion in model container [2019-05-23 11:24:27,889 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:27" (2/3) ... [2019-05-23 11:24:27,889 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b7c071a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:24:27, skipping insertion in model container [2019-05-23 11:24:27,890 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:24:27" (3/3) ... [2019-05-23 11:24:27,891 INFO L146 ILogger]: Analyzing ICFG sum20_true-unreach-call.i [2019-05-23 11:24:27,901 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:24:27,910 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:24:27,927 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:24:27,956 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:24:27,957 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:24:27,957 INFO L146 ILogger]: Hoare is true [2019-05-23 11:24:27,957 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:24:27,958 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:24:27,958 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:24:27,958 INFO L146 ILogger]: Difference is false [2019-05-23 11:24:27,959 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:24:27,959 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:24:27,982 INFO L146 ILogger]: Start isEmpty. Operand 105 states. [2019-05-23 11:24:27,991 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 69 [2019-05-23 11:24:27,992 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:27,993 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:27,995 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:28,000 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:28,000 INFO L146 ILogger]: Analyzing trace with hash -503519154, now seen corresponding path program 1 times [2019-05-23 11:24:28,001 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:28,002 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:28,047 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:28,047 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:28,048 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:28,091 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:28,189 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:24:28,192 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:24:28,192 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:24:28,196 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:24:28,209 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:24:28,210 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:24:28,213 INFO L146 ILogger]: Start difference. First operand 105 states. Second operand 3 states. [2019-05-23 11:24:28,312 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:28,312 INFO L146 ILogger]: Finished difference Result 199 states and 219 transitions. [2019-05-23 11:24:28,313 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:24:28,314 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 68 [2019-05-23 11:24:28,315 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:28,325 INFO L146 ILogger]: With dead ends: 199 [2019-05-23 11:24:28,325 INFO L146 ILogger]: Without dead ends: 105 [2019-05-23 11:24:28,328 INFO L146 ILogger]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:24:28,344 INFO L146 ILogger]: Start minimizeSevpa. Operand 105 states. [2019-05-23 11:24:28,365 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 105 to 100. [2019-05-23 11:24:28,367 INFO L146 ILogger]: Start removeUnreachable. Operand 100 states. [2019-05-23 11:24:28,369 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 100 states to 100 states and 104 transitions. [2019-05-23 11:24:28,371 INFO L146 ILogger]: Start accepts. Automaton has 100 states and 104 transitions. Word has length 68 [2019-05-23 11:24:28,371 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:28,371 INFO L146 ILogger]: Abstraction has 100 states and 104 transitions. [2019-05-23 11:24:28,371 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:24:28,372 INFO L146 ILogger]: Start isEmpty. Operand 100 states and 104 transitions. [2019-05-23 11:24:28,374 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 76 [2019-05-23 11:24:28,375 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:28,375 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:28,375 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:28,376 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:28,376 INFO L146 ILogger]: Analyzing trace with hash -1483383517, now seen corresponding path program 1 times [2019-05-23 11:24:28,376 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:28,376 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:28,378 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:28,378 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:28,378 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:28,403 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:28,667 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:24:28,668 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:28,668 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:24:28,686 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:28,744 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:28,746 INFO L146 ILogger]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2019-05-23 11:24:28,757 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:28,812 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:24:28,841 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:24:28,841 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-05-23 11:24:28,843 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:24:28,843 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:24:28,844 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:24:28,844 INFO L146 ILogger]: Start difference. First operand 100 states and 104 transitions. Second operand 6 states. [2019-05-23 11:24:29,248 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:29,249 INFO L146 ILogger]: Finished difference Result 212 states and 223 transitions. [2019-05-23 11:24:29,254 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:24:29,254 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 75 [2019-05-23 11:24:29,254 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:29,256 INFO L146 ILogger]: With dead ends: 212 [2019-05-23 11:24:29,256 INFO L146 ILogger]: Without dead ends: 130 [2019-05-23 11:24:29,258 INFO L146 ILogger]: 0 DeclaredPredicates, 81 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:24:29,258 INFO L146 ILogger]: Start minimizeSevpa. Operand 130 states. [2019-05-23 11:24:29,272 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 130 to 110. [2019-05-23 11:24:29,272 INFO L146 ILogger]: Start removeUnreachable. Operand 110 states. [2019-05-23 11:24:29,275 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 110 states to 110 states and 114 transitions. [2019-05-23 11:24:29,275 INFO L146 ILogger]: Start accepts. Automaton has 110 states and 114 transitions. Word has length 75 [2019-05-23 11:24:29,275 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:29,276 INFO L146 ILogger]: Abstraction has 110 states and 114 transitions. [2019-05-23 11:24:29,279 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:24:29,279 INFO L146 ILogger]: Start isEmpty. Operand 110 states and 114 transitions. [2019-05-23 11:24:29,281 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 104 [2019-05-23 11:24:29,282 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:29,283 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:29,283 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:29,283 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:29,284 INFO L146 ILogger]: Analyzing trace with hash -483601032, now seen corresponding path program 1 times [2019-05-23 11:24:29,284 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:29,284 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:29,285 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:29,286 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:29,286 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:29,317 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:29,449 INFO L146 ILogger]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-05-23 11:24:29,450 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:29,450 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:24:29,458 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:29,506 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:29,507 INFO L146 ILogger]: Trace formula consists of 176 conjuncts, 2 conjunts are in the unsatisfiable core [2019-05-23 11:24:29,511 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:29,558 INFO L146 ILogger]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-05-23 11:24:29,577 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:24:29,578 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-05-23 11:24:29,579 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:24:29,579 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:24:29,580 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:24:29,580 INFO L146 ILogger]: Start difference. First operand 110 states and 114 transitions. Second operand 6 states. [2019-05-23 11:24:30,071 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:30,072 INFO L146 ILogger]: Finished difference Result 221 states and 231 transitions. [2019-05-23 11:24:30,072 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:24:30,072 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 103 [2019-05-23 11:24:30,073 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:30,074 INFO L146 ILogger]: With dead ends: 221 [2019-05-23 11:24:30,074 INFO L146 ILogger]: Without dead ends: 152 [2019-05-23 11:24:30,075 INFO L146 ILogger]: 0 DeclaredPredicates, 111 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:24:30,076 INFO L146 ILogger]: Start minimizeSevpa. Operand 152 states. [2019-05-23 11:24:30,085 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 152 to 132. [2019-05-23 11:24:30,085 INFO L146 ILogger]: Start removeUnreachable. Operand 132 states. [2019-05-23 11:24:30,086 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 132 states to 132 states and 136 transitions. [2019-05-23 11:24:30,087 INFO L146 ILogger]: Start accepts. Automaton has 132 states and 136 transitions. Word has length 103 [2019-05-23 11:24:30,087 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:30,087 INFO L146 ILogger]: Abstraction has 132 states and 136 transitions. [2019-05-23 11:24:30,087 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:24:30,088 INFO L146 ILogger]: Start isEmpty. Operand 132 states and 136 transitions. [2019-05-23 11:24:30,089 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 132 [2019-05-23 11:24:30,090 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:30,090 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:30,090 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:30,091 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:30,091 INFO L146 ILogger]: Analyzing trace with hash 46998236, now seen corresponding path program 1 times [2019-05-23 11:24:30,091 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:30,091 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:30,092 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:30,092 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:30,092 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:30,125 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:30,246 INFO L146 ILogger]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:24:30,247 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:30,247 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:24:30,259 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:30,321 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:30,323 INFO L146 ILogger]: Trace formula consists of 219 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:24:30,328 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:30,499 INFO L146 ILogger]: Checked inductivity of 37 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-05-23 11:24:30,519 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:30,519 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2019-05-23 11:24:30,520 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:24:30,520 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:24:30,521 INFO L146 ILogger]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:24:30,521 INFO L146 ILogger]: Start difference. First operand 132 states and 136 transitions. Second operand 10 states. [2019-05-23 11:24:31,119 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:31,119 INFO L146 ILogger]: Finished difference Result 263 states and 272 transitions. [2019-05-23 11:24:31,120 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:24:31,120 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 131 [2019-05-23 11:24:31,120 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:31,122 INFO L146 ILogger]: With dead ends: 263 [2019-05-23 11:24:31,122 INFO L146 ILogger]: Without dead ends: 156 [2019-05-23 11:24:31,123 INFO L146 ILogger]: 0 DeclaredPredicates, 141 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:24:31,124 INFO L146 ILogger]: Start minimizeSevpa. Operand 156 states. [2019-05-23 11:24:31,134 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 156 to 146. [2019-05-23 11:24:31,135 INFO L146 ILogger]: Start removeUnreachable. Operand 146 states. [2019-05-23 11:24:31,136 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 146 states to 146 states and 150 transitions. [2019-05-23 11:24:31,136 INFO L146 ILogger]: Start accepts. Automaton has 146 states and 150 transitions. Word has length 131 [2019-05-23 11:24:31,137 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:31,137 INFO L146 ILogger]: Abstraction has 146 states and 150 transitions. [2019-05-23 11:24:31,137 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:24:31,137 INFO L146 ILogger]: Start isEmpty. Operand 146 states and 150 transitions. [2019-05-23 11:24:31,141 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 146 [2019-05-23 11:24:31,141 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:31,141 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:31,142 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:31,145 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:31,145 INFO L146 ILogger]: Analyzing trace with hash -1200733213, now seen corresponding path program 2 times [2019-05-23 11:24:31,145 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:31,146 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:31,148 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:31,148 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:31,149 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:31,213 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:31,439 INFO L146 ILogger]: Checked inductivity of 60 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:24:31,439 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:31,439 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:24:31,449 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:24:31,513 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:24:31,513 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:31,515 INFO L146 ILogger]: Trace formula consists of 239 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:24:31,520 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:31,836 INFO L146 ILogger]: Checked inductivity of 60 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:24:31,869 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:31,869 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2019-05-23 11:24:31,870 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:24:31,870 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:24:31,871 INFO L146 ILogger]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:24:31,871 INFO L146 ILogger]: Start difference. First operand 146 states and 150 transitions. Second operand 11 states. [2019-05-23 11:24:32,097 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:32,097 INFO L146 ILogger]: Finished difference Result 272 states and 280 transitions. [2019-05-23 11:24:32,105 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:24:32,105 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 145 [2019-05-23 11:24:32,105 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:32,106 INFO L146 ILogger]: With dead ends: 272 [2019-05-23 11:24:32,107 INFO L146 ILogger]: Without dead ends: 158 [2019-05-23 11:24:32,108 INFO L146 ILogger]: 0 DeclaredPredicates, 159 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:24:32,110 INFO L146 ILogger]: Start minimizeSevpa. Operand 158 states. [2019-05-23 11:24:32,128 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 158 to 153. [2019-05-23 11:24:32,128 INFO L146 ILogger]: Start removeUnreachable. Operand 153 states. [2019-05-23 11:24:32,131 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 153 states to 153 states and 157 transitions. [2019-05-23 11:24:32,132 INFO L146 ILogger]: Start accepts. Automaton has 153 states and 157 transitions. Word has length 145 [2019-05-23 11:24:32,132 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:32,132 INFO L146 ILogger]: Abstraction has 153 states and 157 transitions. [2019-05-23 11:24:32,132 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:24:32,133 INFO L146 ILogger]: Start isEmpty. Operand 153 states and 157 transitions. [2019-05-23 11:24:32,138 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 153 [2019-05-23 11:24:32,138 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:32,138 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:32,141 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:32,141 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:32,141 INFO L146 ILogger]: Analyzing trace with hash 104748121, now seen corresponding path program 3 times [2019-05-23 11:24:32,141 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:32,141 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:32,142 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:32,142 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:32,143 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:32,194 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:32,409 INFO L146 ILogger]: Checked inductivity of 82 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:24:32,409 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:32,409 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:24:32,417 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:24:32,472 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:24:32,472 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:32,473 INFO L146 ILogger]: Trace formula consists of 229 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:24:32,478 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:32,589 INFO L146 ILogger]: Checked inductivity of 82 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-05-23 11:24:32,609 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:32,609 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2019-05-23 11:24:32,610 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:24:32,610 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:24:32,612 INFO L146 ILogger]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:24:32,612 INFO L146 ILogger]: Start difference. First operand 153 states and 157 transitions. Second operand 16 states. [2019-05-23 11:24:33,122 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:33,122 INFO L146 ILogger]: Finished difference Result 315 states and 326 transitions. [2019-05-23 11:24:33,123 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-05-23 11:24:33,123 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 152 [2019-05-23 11:24:33,123 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:33,126 INFO L146 ILogger]: With dead ends: 315 [2019-05-23 11:24:33,126 INFO L146 ILogger]: Without dead ends: 201 [2019-05-23 11:24:33,127 INFO L146 ILogger]: 0 DeclaredPredicates, 178 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=591, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:24:33,128 INFO L146 ILogger]: Start minimizeSevpa. Operand 201 states. [2019-05-23 11:24:33,134 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 201 to 181. [2019-05-23 11:24:33,134 INFO L146 ILogger]: Start removeUnreachable. Operand 181 states. [2019-05-23 11:24:33,135 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 181 states to 181 states and 185 transitions. [2019-05-23 11:24:33,135 INFO L146 ILogger]: Start accepts. Automaton has 181 states and 185 transitions. Word has length 152 [2019-05-23 11:24:33,135 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:33,135 INFO L146 ILogger]: Abstraction has 181 states and 185 transitions. [2019-05-23 11:24:33,136 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:24:33,136 INFO L146 ILogger]: Start isEmpty. Operand 181 states and 185 transitions. [2019-05-23 11:24:33,138 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 181 [2019-05-23 11:24:33,138 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:33,139 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:33,139 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:33,139 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:33,139 INFO L146 ILogger]: Analyzing trace with hash -9292050, now seen corresponding path program 4 times [2019-05-23 11:24:33,140 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:33,140 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:33,140 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:33,141 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:33,141 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:33,166 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:33,319 INFO L146 ILogger]: Checked inductivity of 156 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:24:33,319 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:33,320 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:24:33,329 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:24:33,375 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:24:33,375 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:33,376 INFO L146 ILogger]: Trace formula consists of 292 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:24:33,380 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:33,434 INFO L146 ILogger]: Checked inductivity of 156 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:24:33,452 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:33,453 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2019-05-23 11:24:33,453 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:24:33,453 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:24:33,454 INFO L146 ILogger]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:24:33,454 INFO L146 ILogger]: Start difference. First operand 181 states and 185 transitions. Second operand 15 states. [2019-05-23 11:24:33,686 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:33,686 INFO L146 ILogger]: Finished difference Result 328 states and 336 transitions. [2019-05-23 11:24:33,688 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:24:33,688 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 180 [2019-05-23 11:24:33,688 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:33,689 INFO L146 ILogger]: With dead ends: 328 [2019-05-23 11:24:33,689 INFO L146 ILogger]: Without dead ends: 193 [2019-05-23 11:24:33,690 INFO L146 ILogger]: 0 DeclaredPredicates, 202 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:24:33,690 INFO L146 ILogger]: Start minimizeSevpa. Operand 193 states. [2019-05-23 11:24:33,695 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 193 to 188. [2019-05-23 11:24:33,696 INFO L146 ILogger]: Start removeUnreachable. Operand 188 states. [2019-05-23 11:24:33,696 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 188 states to 188 states and 192 transitions. [2019-05-23 11:24:33,697 INFO L146 ILogger]: Start accepts. Automaton has 188 states and 192 transitions. Word has length 180 [2019-05-23 11:24:33,697 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:33,697 INFO L146 ILogger]: Abstraction has 188 states and 192 transitions. [2019-05-23 11:24:33,697 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:24:33,698 INFO L146 ILogger]: Start isEmpty. Operand 188 states and 192 transitions. [2019-05-23 11:24:33,700 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 188 [2019-05-23 11:24:33,700 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:33,701 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:33,701 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:33,701 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:33,702 INFO L146 ILogger]: Analyzing trace with hash -397663560, now seen corresponding path program 5 times [2019-05-23 11:24:33,702 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:33,702 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:33,703 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:33,703 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:33,703 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:33,727 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:33,997 INFO L146 ILogger]: Checked inductivity of 192 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:24:33,998 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:33,998 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:24:34,006 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:24:34,088 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-05-23 11:24:34,088 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:34,090 INFO L146 ILogger]: Trace formula consists of 302 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:24:34,092 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:34,200 INFO L146 ILogger]: Checked inductivity of 192 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2019-05-23 11:24:34,218 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:34,219 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 22 [2019-05-23 11:24:34,219 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:24:34,219 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:24:34,220 INFO L146 ILogger]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:24:34,220 INFO L146 ILogger]: Start difference. First operand 188 states and 192 transitions. Second operand 22 states. [2019-05-23 11:24:35,079 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:35,079 INFO L146 ILogger]: Finished difference Result 371 states and 382 transitions. [2019-05-23 11:24:35,080 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:24:35,080 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 187 [2019-05-23 11:24:35,080 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:35,082 INFO L146 ILogger]: With dead ends: 371 [2019-05-23 11:24:35,082 INFO L146 ILogger]: Without dead ends: 236 [2019-05-23 11:24:35,084 INFO L146 ILogger]: 0 DeclaredPredicates, 219 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=320, Invalid=1240, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:24:35,084 INFO L146 ILogger]: Start minimizeSevpa. Operand 236 states. [2019-05-23 11:24:35,090 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 236 to 216. [2019-05-23 11:24:35,090 INFO L146 ILogger]: Start removeUnreachable. Operand 216 states. [2019-05-23 11:24:35,091 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 216 states to 216 states and 220 transitions. [2019-05-23 11:24:35,091 INFO L146 ILogger]: Start accepts. Automaton has 216 states and 220 transitions. Word has length 187 [2019-05-23 11:24:35,092 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:35,092 INFO L146 ILogger]: Abstraction has 216 states and 220 transitions. [2019-05-23 11:24:35,092 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:24:35,092 INFO L146 ILogger]: Start isEmpty. Operand 216 states and 220 transitions. [2019-05-23 11:24:35,098 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 216 [2019-05-23 11:24:35,099 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:35,099 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:35,099 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:35,099 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:35,100 INFO L146 ILogger]: Analyzing trace with hash 1152254147, now seen corresponding path program 6 times [2019-05-23 11:24:35,100 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:35,100 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:35,101 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:35,101 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:35,101 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:35,141 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:35,349 INFO L146 ILogger]: Checked inductivity of 301 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2019-05-23 11:24:35,349 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:35,349 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:24:35,359 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:24:35,441 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-05-23 11:24:35,441 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:35,442 INFO L146 ILogger]: Trace formula consists of 249 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:24:35,445 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:35,592 INFO L146 ILogger]: Checked inductivity of 301 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2019-05-23 11:24:35,612 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:35,612 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 7] total 22 [2019-05-23 11:24:35,613 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:24:35,613 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:24:35,613 INFO L146 ILogger]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:24:35,614 INFO L146 ILogger]: Start difference. First operand 216 states and 220 transitions. Second operand 22 states. [2019-05-23 11:24:36,234 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:36,235 INFO L146 ILogger]: Finished difference Result 396 states and 405 transitions. [2019-05-23 11:24:36,237 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:24:36,237 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 215 [2019-05-23 11:24:36,237 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:36,238 INFO L146 ILogger]: With dead ends: 396 [2019-05-23 11:24:36,238 INFO L146 ILogger]: Without dead ends: 240 [2019-05-23 11:24:36,239 INFO L146 ILogger]: 0 DeclaredPredicates, 249 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=360, Invalid=1200, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:24:36,240 INFO L146 ILogger]: Start minimizeSevpa. Operand 240 states. [2019-05-23 11:24:36,244 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 240 to 230. [2019-05-23 11:24:36,245 INFO L146 ILogger]: Start removeUnreachable. Operand 230 states. [2019-05-23 11:24:36,246 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 230 states to 230 states and 234 transitions. [2019-05-23 11:24:36,246 INFO L146 ILogger]: Start accepts. Automaton has 230 states and 234 transitions. Word has length 215 [2019-05-23 11:24:36,246 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:36,246 INFO L146 ILogger]: Abstraction has 230 states and 234 transitions. [2019-05-23 11:24:36,246 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:24:36,246 INFO L146 ILogger]: Start isEmpty. Operand 230 states and 234 transitions. [2019-05-23 11:24:36,249 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 230 [2019-05-23 11:24:36,249 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:36,249 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:36,249 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:36,249 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:36,250 INFO L146 ILogger]: Analyzing trace with hash 1030812380, now seen corresponding path program 7 times [2019-05-23 11:24:36,250 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:36,250 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:36,251 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:36,251 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:36,251 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:36,276 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:36,674 INFO L146 ILogger]: Checked inductivity of 366 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2019-05-23 11:24:36,675 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:36,675 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:24:36,684 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:36,747 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:36,749 INFO L146 ILogger]: Trace formula consists of 365 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:24:36,752 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:36,855 INFO L146 ILogger]: Checked inductivity of 366 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2019-05-23 11:24:36,884 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:36,885 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-05-23 11:24:36,885 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:24:36,886 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:24:36,887 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:24:36,887 INFO L146 ILogger]: Start difference. First operand 230 states and 234 transitions. Second operand 21 states. [2019-05-23 11:24:37,660 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:37,660 INFO L146 ILogger]: Finished difference Result 405 states and 413 transitions. [2019-05-23 11:24:37,667 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:24:37,667 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 229 [2019-05-23 11:24:37,667 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:37,669 INFO L146 ILogger]: With dead ends: 405 [2019-05-23 11:24:37,669 INFO L146 ILogger]: Without dead ends: 242 [2019-05-23 11:24:37,671 INFO L146 ILogger]: 0 DeclaredPredicates, 263 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:24:37,671 INFO L146 ILogger]: Start minimizeSevpa. Operand 242 states. [2019-05-23 11:24:37,676 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 242 to 237. [2019-05-23 11:24:37,676 INFO L146 ILogger]: Start removeUnreachable. Operand 237 states. [2019-05-23 11:24:37,677 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 237 states to 237 states and 241 transitions. [2019-05-23 11:24:37,677 INFO L146 ILogger]: Start accepts. Automaton has 237 states and 241 transitions. Word has length 229 [2019-05-23 11:24:37,677 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:37,678 INFO L146 ILogger]: Abstraction has 237 states and 241 transitions. [2019-05-23 11:24:37,680 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:24:37,680 INFO L146 ILogger]: Start isEmpty. Operand 237 states and 241 transitions. [2019-05-23 11:24:37,681 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 237 [2019-05-23 11:24:37,681 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:37,681 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:37,682 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:37,682 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:37,682 INFO L146 ILogger]: Analyzing trace with hash -1860993966, now seen corresponding path program 8 times [2019-05-23 11:24:37,682 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:37,682 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:37,683 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:37,683 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:37,683 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:37,710 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:38,017 INFO L146 ILogger]: Checked inductivity of 423 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2019-05-23 11:24:38,018 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:38,018 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:24:38,027 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:24:38,108 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:24:38,108 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:38,110 INFO L146 ILogger]: Trace formula consists of 375 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:24:38,127 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:38,265 INFO L146 ILogger]: Checked inductivity of 423 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2019-05-23 11:24:38,284 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:38,285 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2019-05-23 11:24:38,285 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:24:38,286 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:24:38,286 INFO L146 ILogger]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:24:38,286 INFO L146 ILogger]: Start difference. First operand 237 states and 241 transitions. Second operand 23 states. [2019-05-23 11:24:38,614 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:38,614 INFO L146 ILogger]: Finished difference Result 412 states and 420 transitions. [2019-05-23 11:24:38,622 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:24:38,622 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 236 [2019-05-23 11:24:38,622 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:38,624 INFO L146 ILogger]: With dead ends: 412 [2019-05-23 11:24:38,624 INFO L146 ILogger]: Without dead ends: 249 [2019-05-23 11:24:38,627 INFO L146 ILogger]: 0 DeclaredPredicates, 274 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:24:38,627 INFO L146 ILogger]: Start minimizeSevpa. Operand 249 states. [2019-05-23 11:24:38,631 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 249 to 244. [2019-05-23 11:24:38,632 INFO L146 ILogger]: Start removeUnreachable. Operand 244 states. [2019-05-23 11:24:38,632 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 244 states to 244 states and 248 transitions. [2019-05-23 11:24:38,633 INFO L146 ILogger]: Start accepts. Automaton has 244 states and 248 transitions. Word has length 236 [2019-05-23 11:24:38,633 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:38,633 INFO L146 ILogger]: Abstraction has 244 states and 248 transitions. [2019-05-23 11:24:38,633 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:24:38,633 INFO L146 ILogger]: Start isEmpty. Operand 244 states and 248 transitions. [2019-05-23 11:24:38,635 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 244 [2019-05-23 11:24:38,635 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:38,636 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:38,636 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:38,636 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:38,636 INFO L146 ILogger]: Analyzing trace with hash -1509981668, now seen corresponding path program 9 times [2019-05-23 11:24:38,637 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:38,637 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:38,637 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:38,638 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:38,638 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:38,662 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:40,290 INFO L146 ILogger]: Checked inductivity of 487 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2019-05-23 11:24:40,290 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:40,290 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:24:40,298 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:24:40,387 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:24:40,387 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:40,389 INFO L146 ILogger]: Trace formula consists of 282 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:24:40,392 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:40,560 INFO L146 ILogger]: Checked inductivity of 487 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 463 trivial. 0 not checked. [2019-05-23 11:24:40,584 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:40,584 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 9] total 30 [2019-05-23 11:24:40,585 INFO L146 ILogger]: Interpolant automaton has 30 states [2019-05-23 11:24:40,585 INFO L146 ILogger]: Constructing interpolant automaton starting with 30 interpolants. [2019-05-23 11:24:40,586 INFO L146 ILogger]: CoverageRelationStatistics Valid=166, Invalid=704, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:24:40,586 INFO L146 ILogger]: Start difference. First operand 244 states and 248 transitions. Second operand 30 states. [2019-05-23 11:24:41,273 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:41,273 INFO L146 ILogger]: Finished difference Result 431 states and 440 transitions. [2019-05-23 11:24:41,274 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2019-05-23 11:24:41,274 INFO L146 ILogger]: Start accepts. Automaton has 30 states. Word has length 243 [2019-05-23 11:24:41,274 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:41,276 INFO L146 ILogger]: With dead ends: 431 [2019-05-23 11:24:41,276 INFO L146 ILogger]: Without dead ends: 268 [2019-05-23 11:24:41,277 INFO L146 ILogger]: 0 DeclaredPredicates, 291 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=680, Invalid=2400, Unknown=0, NotChecked=0, Total=3080 [2019-05-23 11:24:41,278 INFO L146 ILogger]: Start minimizeSevpa. Operand 268 states. [2019-05-23 11:24:41,282 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 268 to 258. [2019-05-23 11:24:41,282 INFO L146 ILogger]: Start removeUnreachable. Operand 258 states. [2019-05-23 11:24:41,283 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 258 states to 258 states and 262 transitions. [2019-05-23 11:24:41,283 INFO L146 ILogger]: Start accepts. Automaton has 258 states and 262 transitions. Word has length 243 [2019-05-23 11:24:41,283 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:41,283 INFO L146 ILogger]: Abstraction has 258 states and 262 transitions. [2019-05-23 11:24:41,284 INFO L146 ILogger]: Interpolant automaton has 30 states. [2019-05-23 11:24:41,284 INFO L146 ILogger]: Start isEmpty. Operand 258 states and 262 transitions. [2019-05-23 11:24:41,285 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 258 [2019-05-23 11:24:41,285 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:41,286 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:41,286 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:41,286 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:41,287 INFO L146 ILogger]: Analyzing trace with hash -64980893, now seen corresponding path program 10 times [2019-05-23 11:24:41,287 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:41,287 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:41,288 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:41,288 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:41,288 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:41,332 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:42,689 INFO L146 ILogger]: Checked inductivity of 580 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2019-05-23 11:24:42,690 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:42,690 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:24:42,698 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:24:42,776 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:24:42,776 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:42,778 INFO L146 ILogger]: Trace formula consists of 405 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:24:42,781 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:42,861 INFO L146 ILogger]: Checked inductivity of 580 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2019-05-23 11:24:42,880 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:42,880 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2019-05-23 11:24:42,880 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:24:42,881 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:24:42,881 INFO L146 ILogger]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:24:42,881 INFO L146 ILogger]: Start difference. First operand 258 states and 262 transitions. Second operand 27 states. [2019-05-23 11:24:43,633 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:43,633 INFO L146 ILogger]: Finished difference Result 440 states and 448 transitions. [2019-05-23 11:24:43,633 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-05-23 11:24:43,634 INFO L146 ILogger]: Start accepts. Automaton has 27 states. Word has length 257 [2019-05-23 11:24:43,634 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:43,635 INFO L146 ILogger]: With dead ends: 440 [2019-05-23 11:24:43,635 INFO L146 ILogger]: Without dead ends: 270 [2019-05-23 11:24:43,636 INFO L146 ILogger]: 0 DeclaredPredicates, 303 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=748, Invalid=1604, Unknown=0, NotChecked=0, Total=2352 [2019-05-23 11:24:43,636 INFO L146 ILogger]: Start minimizeSevpa. Operand 270 states. [2019-05-23 11:24:43,640 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 270 to 265. [2019-05-23 11:24:43,640 INFO L146 ILogger]: Start removeUnreachable. Operand 265 states. [2019-05-23 11:24:43,641 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 265 states to 265 states and 269 transitions. [2019-05-23 11:24:43,641 INFO L146 ILogger]: Start accepts. Automaton has 265 states and 269 transitions. Word has length 257 [2019-05-23 11:24:43,641 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:43,641 INFO L146 ILogger]: Abstraction has 265 states and 269 transitions. [2019-05-23 11:24:43,642 INFO L146 ILogger]: Interpolant automaton has 27 states. [2019-05-23 11:24:43,642 INFO L146 ILogger]: Start isEmpty. Operand 265 states and 269 transitions. [2019-05-23 11:24:43,643 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 265 [2019-05-23 11:24:43,643 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:43,643 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:43,644 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:43,644 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:43,644 INFO L146 ILogger]: Analyzing trace with hash 887018713, now seen corresponding path program 11 times [2019-05-23 11:24:43,644 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:43,644 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:43,645 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:43,645 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:43,645 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:43,671 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:44,099 INFO L146 ILogger]: Checked inductivity of 658 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2019-05-23 11:24:44,100 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:44,100 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:24:44,109 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:24:44,488 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2019-05-23 11:24:44,488 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:44,490 INFO L146 ILogger]: Trace formula consists of 415 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:24:44,494 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:44,706 INFO L146 ILogger]: Checked inductivity of 658 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2019-05-23 11:24:44,724 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:44,724 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 11] total 36 [2019-05-23 11:24:44,725 INFO L146 ILogger]: Interpolant automaton has 36 states [2019-05-23 11:24:44,725 INFO L146 ILogger]: Constructing interpolant automaton starting with 36 interpolants. [2019-05-23 11:24:44,725 INFO L146 ILogger]: CoverageRelationStatistics Valid=229, Invalid=1031, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:24:44,726 INFO L146 ILogger]: Start difference. First operand 265 states and 269 transitions. Second operand 36 states. [2019-05-23 11:24:46,184 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:46,184 INFO L146 ILogger]: Finished difference Result 483 states and 494 transitions. [2019-05-23 11:24:46,184 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2019-05-23 11:24:46,184 INFO L146 ILogger]: Start accepts. Automaton has 36 states. Word has length 264 [2019-05-23 11:24:46,185 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:46,187 INFO L146 ILogger]: With dead ends: 483 [2019-05-23 11:24:46,187 INFO L146 ILogger]: Without dead ends: 313 [2019-05-23 11:24:46,189 INFO L146 ILogger]: 0 DeclaredPredicates, 322 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=965, Invalid=3591, Unknown=0, NotChecked=0, Total=4556 [2019-05-23 11:24:46,190 INFO L146 ILogger]: Start minimizeSevpa. Operand 313 states. [2019-05-23 11:24:46,195 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 313 to 293. [2019-05-23 11:24:46,195 INFO L146 ILogger]: Start removeUnreachable. Operand 293 states. [2019-05-23 11:24:46,196 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 293 states to 293 states and 297 transitions. [2019-05-23 11:24:46,196 INFO L146 ILogger]: Start accepts. Automaton has 293 states and 297 transitions. Word has length 264 [2019-05-23 11:24:46,196 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:46,197 INFO L146 ILogger]: Abstraction has 293 states and 297 transitions. [2019-05-23 11:24:46,197 INFO L146 ILogger]: Interpolant automaton has 36 states. [2019-05-23 11:24:46,197 INFO L146 ILogger]: Start isEmpty. Operand 293 states and 297 transitions. [2019-05-23 11:24:46,198 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 293 [2019-05-23 11:24:46,198 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:46,199 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:46,199 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:46,199 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:46,199 INFO L146 ILogger]: Analyzing trace with hash -499990866, now seen corresponding path program 12 times [2019-05-23 11:24:46,200 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:46,200 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:46,200 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:46,200 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:46,201 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:46,223 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:47,064 INFO L146 ILogger]: Checked inductivity of 830 backedges. 0 proven. 559 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2019-05-23 11:24:47,065 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:47,065 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:24:47,073 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:24:47,394 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2019-05-23 11:24:47,394 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:47,396 INFO L146 ILogger]: Trace formula consists of 375 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:24:47,399 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:47,632 INFO L146 ILogger]: Checked inductivity of 830 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2019-05-23 11:24:47,651 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:47,652 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 11] total 38 [2019-05-23 11:24:47,652 INFO L146 ILogger]: Interpolant automaton has 38 states [2019-05-23 11:24:47,653 INFO L146 ILogger]: Constructing interpolant automaton starting with 38 interpolants. [2019-05-23 11:24:47,653 INFO L146 ILogger]: CoverageRelationStatistics Valid=258, Invalid=1148, Unknown=0, NotChecked=0, Total=1406 [2019-05-23 11:24:47,654 INFO L146 ILogger]: Start difference. First operand 293 states and 297 transitions. Second operand 38 states. [2019-05-23 11:24:48,592 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:48,592 INFO L146 ILogger]: Finished difference Result 508 states and 517 transitions. [2019-05-23 11:24:48,592 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2019-05-23 11:24:48,592 INFO L146 ILogger]: Start accepts. Automaton has 38 states. Word has length 292 [2019-05-23 11:24:48,593 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:48,594 INFO L146 ILogger]: With dead ends: 508 [2019-05-23 11:24:48,594 INFO L146 ILogger]: Without dead ends: 317 [2019-05-23 11:24:48,596 INFO L146 ILogger]: 0 DeclaredPredicates, 354 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 954 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1100, Invalid=4012, Unknown=0, NotChecked=0, Total=5112 [2019-05-23 11:24:48,597 INFO L146 ILogger]: Start minimizeSevpa. Operand 317 states. [2019-05-23 11:24:48,602 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 317 to 307. [2019-05-23 11:24:48,602 INFO L146 ILogger]: Start removeUnreachable. Operand 307 states. [2019-05-23 11:24:48,603 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 307 states to 307 states and 311 transitions. [2019-05-23 11:24:48,603 INFO L146 ILogger]: Start accepts. Automaton has 307 states and 311 transitions. Word has length 292 [2019-05-23 11:24:48,603 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:48,603 INFO L146 ILogger]: Abstraction has 307 states and 311 transitions. [2019-05-23 11:24:48,603 INFO L146 ILogger]: Interpolant automaton has 38 states. [2019-05-23 11:24:48,604 INFO L146 ILogger]: Start isEmpty. Operand 307 states and 311 transitions. [2019-05-23 11:24:48,605 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 307 [2019-05-23 11:24:48,605 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:48,606 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 14, 14, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:48,606 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:48,606 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:48,606 INFO L146 ILogger]: Analyzing trace with hash 687477199, now seen corresponding path program 13 times [2019-05-23 11:24:48,606 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:48,607 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:48,607 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:48,607 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:48,608 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:48,633 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:49,323 INFO L146 ILogger]: Checked inductivity of 951 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2019-05-23 11:24:49,324 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:49,324 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:24:49,332 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:49,397 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:49,399 INFO L146 ILogger]: Trace formula consists of 478 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:24:49,402 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:49,516 INFO L146 ILogger]: Checked inductivity of 951 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2019-05-23 11:24:49,535 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:49,535 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2019-05-23 11:24:49,536 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:24:49,536 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:24:49,537 INFO L146 ILogger]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:24:49,537 INFO L146 ILogger]: Start difference. First operand 307 states and 311 transitions. Second operand 33 states. [2019-05-23 11:24:50,321 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:50,322 INFO L146 ILogger]: Finished difference Result 517 states and 525 transitions. [2019-05-23 11:24:50,322 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-05-23 11:24:50,322 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 306 [2019-05-23 11:24:50,322 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:50,324 INFO L146 ILogger]: With dead ends: 517 [2019-05-23 11:24:50,324 INFO L146 ILogger]: Without dead ends: 319 [2019-05-23 11:24:50,325 INFO L146 ILogger]: 0 DeclaredPredicates, 364 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1159, Invalid=2501, Unknown=0, NotChecked=0, Total=3660 [2019-05-23 11:24:50,326 INFO L146 ILogger]: Start minimizeSevpa. Operand 319 states. [2019-05-23 11:24:50,329 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 319 to 314. [2019-05-23 11:24:50,330 INFO L146 ILogger]: Start removeUnreachable. Operand 314 states. [2019-05-23 11:24:50,330 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 314 states to 314 states and 318 transitions. [2019-05-23 11:24:50,330 INFO L146 ILogger]: Start accepts. Automaton has 314 states and 318 transitions. Word has length 306 [2019-05-23 11:24:50,331 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:50,331 INFO L146 ILogger]: Abstraction has 314 states and 318 transitions. [2019-05-23 11:24:50,331 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:24:50,331 INFO L146 ILogger]: Start isEmpty. Operand 314 states and 318 transitions. [2019-05-23 11:24:50,334 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 314 [2019-05-23 11:24:50,334 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:50,334 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 15, 15, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:50,334 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:50,335 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:50,335 INFO L146 ILogger]: Analyzing trace with hash -1746810855, now seen corresponding path program 14 times [2019-05-23 11:24:50,335 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:50,335 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:50,336 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:50,336 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:50,336 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:50,367 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:50,851 INFO L146 ILogger]: Checked inductivity of 1050 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2019-05-23 11:24:50,852 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:50,852 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:24:50,861 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:24:50,952 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:24:50,952 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:50,954 INFO L146 ILogger]: Trace formula consists of 488 conjuncts, 32 conjunts are in the unsatisfiable core [2019-05-23 11:24:50,959 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:51,636 INFO L146 ILogger]: Checked inductivity of 1050 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2019-05-23 11:24:51,685 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:51,685 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2019-05-23 11:24:51,686 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:24:51,687 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:24:51,688 INFO L146 ILogger]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:24:51,688 INFO L146 ILogger]: Start difference. First operand 314 states and 318 transitions. Second operand 35 states. [2019-05-23 11:24:52,539 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:52,540 INFO L146 ILogger]: Finished difference Result 524 states and 532 transitions. [2019-05-23 11:24:52,540 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-05-23 11:24:52,540 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 313 [2019-05-23 11:24:52,540 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:52,542 INFO L146 ILogger]: With dead ends: 524 [2019-05-23 11:24:52,542 INFO L146 ILogger]: Without dead ends: 326 [2019-05-23 11:24:52,544 INFO L146 ILogger]: 0 DeclaredPredicates, 375 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1316, Invalid=2844, Unknown=0, NotChecked=0, Total=4160 [2019-05-23 11:24:52,544 INFO L146 ILogger]: Start minimizeSevpa. Operand 326 states. [2019-05-23 11:24:52,549 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 326 to 321. [2019-05-23 11:24:52,549 INFO L146 ILogger]: Start removeUnreachable. Operand 321 states. [2019-05-23 11:24:52,550 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 321 states to 321 states and 325 transitions. [2019-05-23 11:24:52,550 INFO L146 ILogger]: Start accepts. Automaton has 321 states and 325 transitions. Word has length 313 [2019-05-23 11:24:52,550 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:52,550 INFO L146 ILogger]: Abstraction has 321 states and 325 transitions. [2019-05-23 11:24:52,550 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:24:52,551 INFO L146 ILogger]: Start isEmpty. Operand 321 states and 325 transitions. [2019-05-23 11:24:52,552 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 321 [2019-05-23 11:24:52,552 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:52,553 INFO L146 ILogger]: trace histogram [16, 16, 16, 16, 16, 16, 16, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:52,553 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:52,553 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:52,554 INFO L146 ILogger]: Analyzing trace with hash 68700815, now seen corresponding path program 15 times [2019-05-23 11:24:52,554 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:52,554 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:52,554 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:52,555 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:52,555 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:52,581 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:53,749 INFO L146 ILogger]: Checked inductivity of 1156 backedges. 0 proven. 856 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2019-05-23 11:24:53,749 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:53,749 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:24:53,758 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:24:53,875 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-05-23 11:24:53,875 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:53,877 INFO L146 ILogger]: Trace formula consists of 388 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:24:53,881 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:54,226 INFO L146 ILogger]: Checked inductivity of 1156 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2019-05-23 11:24:54,244 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:54,245 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 13] total 46 [2019-05-23 11:24:54,245 INFO L146 ILogger]: Interpolant automaton has 46 states [2019-05-23 11:24:54,245 INFO L146 ILogger]: Constructing interpolant automaton starting with 46 interpolants. [2019-05-23 11:24:54,246 INFO L146 ILogger]: CoverageRelationStatistics Valid=370, Invalid=1700, Unknown=0, NotChecked=0, Total=2070 [2019-05-23 11:24:54,246 INFO L146 ILogger]: Start difference. First operand 321 states and 325 transitions. Second operand 46 states. [2019-05-23 11:24:55,589 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:55,589 INFO L146 ILogger]: Finished difference Result 567 states and 578 transitions. [2019-05-23 11:24:55,589 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2019-05-23 11:24:55,589 INFO L146 ILogger]: Start accepts. Automaton has 46 states. Word has length 320 [2019-05-23 11:24:55,590 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:55,592 INFO L146 ILogger]: With dead ends: 567 [2019-05-23 11:24:55,592 INFO L146 ILogger]: Without dead ends: 369 [2019-05-23 11:24:55,595 INFO L146 ILogger]: 0 DeclaredPredicates, 396 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1462 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1620, Invalid=6036, Unknown=0, NotChecked=0, Total=7656 [2019-05-23 11:24:55,595 INFO L146 ILogger]: Start minimizeSevpa. Operand 369 states. [2019-05-23 11:24:55,600 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 369 to 349. [2019-05-23 11:24:55,600 INFO L146 ILogger]: Start removeUnreachable. Operand 349 states. [2019-05-23 11:24:55,601 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 349 states to 349 states and 353 transitions. [2019-05-23 11:24:55,601 INFO L146 ILogger]: Start accepts. Automaton has 349 states and 353 transitions. Word has length 320 [2019-05-23 11:24:55,601 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:55,601 INFO L146 ILogger]: Abstraction has 349 states and 353 transitions. [2019-05-23 11:24:55,601 INFO L146 ILogger]: Interpolant automaton has 46 states. [2019-05-23 11:24:55,601 INFO L146 ILogger]: Start isEmpty. Operand 349 states and 353 transitions. [2019-05-23 11:24:55,603 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 349 [2019-05-23 11:24:55,603 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:55,604 INFO L146 ILogger]: trace histogram [17, 17, 17, 17, 17, 17, 17, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:55,604 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:55,604 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:55,604 INFO L146 ILogger]: Analyzing trace with hash 31541138, now seen corresponding path program 16 times [2019-05-23 11:24:55,604 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:55,605 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:55,605 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:55,605 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:55,605 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:55,631 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:56,175 INFO L146 ILogger]: Checked inductivity of 1377 backedges. 0 proven. 969 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2019-05-23 11:24:56,176 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:56,176 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:24:56,184 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:24:56,452 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:24:56,452 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:56,455 INFO L146 ILogger]: Trace formula consists of 541 conjuncts, 36 conjunts are in the unsatisfiable core [2019-05-23 11:24:56,458 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:56,567 INFO L146 ILogger]: Checked inductivity of 1377 backedges. 0 proven. 969 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2019-05-23 11:24:56,586 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:56,586 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2019-05-23 11:24:56,587 INFO L146 ILogger]: Interpolant automaton has 39 states [2019-05-23 11:24:56,587 INFO L146 ILogger]: Constructing interpolant automaton starting with 39 interpolants. [2019-05-23 11:24:56,588 INFO L146 ILogger]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2019-05-23 11:24:56,588 INFO L146 ILogger]: Start difference. First operand 349 states and 353 transitions. Second operand 39 states. [2019-05-23 11:24:57,693 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:57,693 INFO L146 ILogger]: Finished difference Result 580 states and 588 transitions. [2019-05-23 11:24:57,693 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2019-05-23 11:24:57,693 INFO L146 ILogger]: Start accepts. Automaton has 39 states. Word has length 348 [2019-05-23 11:24:57,694 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:57,695 INFO L146 ILogger]: With dead ends: 580 [2019-05-23 11:24:57,695 INFO L146 ILogger]: Without dead ends: 361 [2019-05-23 11:24:57,697 INFO L146 ILogger]: 0 DeclaredPredicates, 418 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1660, Invalid=3596, Unknown=0, NotChecked=0, Total=5256 [2019-05-23 11:24:57,698 INFO L146 ILogger]: Start minimizeSevpa. Operand 361 states. [2019-05-23 11:24:57,702 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 361 to 356. [2019-05-23 11:24:57,702 INFO L146 ILogger]: Start removeUnreachable. Operand 356 states. [2019-05-23 11:24:57,702 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 356 states to 356 states and 360 transitions. [2019-05-23 11:24:57,702 INFO L146 ILogger]: Start accepts. Automaton has 356 states and 360 transitions. Word has length 348 [2019-05-23 11:24:57,703 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:57,703 INFO L146 ILogger]: Abstraction has 356 states and 360 transitions. [2019-05-23 11:24:57,703 INFO L146 ILogger]: Interpolant automaton has 39 states. [2019-05-23 11:24:57,703 INFO L146 ILogger]: Start isEmpty. Operand 356 states and 360 transitions. [2019-05-23 11:24:57,704 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 356 [2019-05-23 11:24:57,704 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:57,705 INFO L146 ILogger]: trace histogram [18, 18, 18, 18, 18, 18, 18, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:57,705 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:57,705 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:57,705 INFO L146 ILogger]: Analyzing trace with hash -1448115876, now seen corresponding path program 17 times [2019-05-23 11:24:57,705 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:57,705 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:57,706 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:57,706 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:57,706 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:57,733 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:58,298 INFO L146 ILogger]: Checked inductivity of 1497 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2019-05-23 11:24:58,298 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:58,298 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:24:58,311 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:24:58,996 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2019-05-23 11:24:58,996 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:59,000 INFO L146 ILogger]: Trace formula consists of 551 conjuncts, 38 conjunts are in the unsatisfiable core [2019-05-23 11:24:59,007 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:59,131 INFO L146 ILogger]: Checked inductivity of 1497 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2019-05-23 11:24:59,151 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:59,151 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2019-05-23 11:24:59,152 INFO L146 ILogger]: Interpolant automaton has 41 states [2019-05-23 11:24:59,152 INFO L146 ILogger]: Constructing interpolant automaton starting with 41 interpolants. [2019-05-23 11:24:59,153 INFO L146 ILogger]: CoverageRelationStatistics Valid=440, Invalid=1200, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:24:59,153 INFO L146 ILogger]: Start difference. First operand 356 states and 360 transitions. Second operand 41 states. [2019-05-23 11:25:00,046 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:00,046 INFO L146 ILogger]: Finished difference Result 587 states and 595 transitions. [2019-05-23 11:25:00,046 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-05-23 11:25:00,047 INFO L146 ILogger]: Start accepts. Automaton has 41 states. Word has length 355 [2019-05-23 11:25:00,047 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:00,048 INFO L146 ILogger]: With dead ends: 587 [2019-05-23 11:25:00,048 INFO L146 ILogger]: Without dead ends: 368 [2019-05-23 11:25:00,051 INFO L146 ILogger]: 0 DeclaredPredicates, 429 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1847, Invalid=4005, Unknown=0, NotChecked=0, Total=5852 [2019-05-23 11:25:00,051 INFO L146 ILogger]: Start minimizeSevpa. Operand 368 states. [2019-05-23 11:25:00,056 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 368 to 363. [2019-05-23 11:25:00,056 INFO L146 ILogger]: Start removeUnreachable. Operand 363 states. [2019-05-23 11:25:00,057 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 363 states to 363 states and 367 transitions. [2019-05-23 11:25:00,057 INFO L146 ILogger]: Start accepts. Automaton has 363 states and 367 transitions. Word has length 355 [2019-05-23 11:25:00,057 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:00,057 INFO L146 ILogger]: Abstraction has 363 states and 367 transitions. [2019-05-23 11:25:00,057 INFO L146 ILogger]: Interpolant automaton has 41 states. [2019-05-23 11:25:00,058 INFO L146 ILogger]: Start isEmpty. Operand 363 states and 367 transitions. [2019-05-23 11:25:00,059 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 363 [2019-05-23 11:25:00,060 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:00,060 INFO L146 ILogger]: trace histogram [19, 19, 19, 19, 19, 19, 19, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:00,060 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:00,060 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:00,061 INFO L146 ILogger]: Analyzing trace with hash 1489801298, now seen corresponding path program 18 times [2019-05-23 11:25:00,061 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:00,061 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:00,062 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:00,062 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:25:00,062 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:00,091 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:00,820 INFO L146 ILogger]: Checked inductivity of 1624 backedges. 0 proven. 1216 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2019-05-23 11:25:00,821 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:00,821 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 11:25:00,831 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:25:01,762 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2019-05-23 11:25:01,763 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:01,766 INFO L146 ILogger]: Trace formula consists of 438 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:25:01,769 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:02,504 INFO L146 ILogger]: Checked inductivity of 1624 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 1549 trivial. 0 not checked. [2019-05-23 11:25:02,528 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:02,528 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 13] total 52 [2019-05-23 11:25:02,529 INFO L146 ILogger]: Interpolant automaton has 52 states [2019-05-23 11:25:02,529 INFO L146 ILogger]: Constructing interpolant automaton starting with 52 interpolants. [2019-05-23 11:25:02,530 INFO L146 ILogger]: CoverageRelationStatistics Valid=487, Invalid=2165, Unknown=0, NotChecked=0, Total=2652 [2019-05-23 11:25:02,530 INFO L146 ILogger]: Start difference. First operand 363 states and 367 transitions. Second operand 52 states. [2019-05-23 11:25:04,116 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:04,116 INFO L146 ILogger]: Finished difference Result 601 states and 610 transitions. [2019-05-23 11:25:04,117 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2019-05-23 11:25:04,117 INFO L146 ILogger]: Start accepts. Automaton has 52 states. Word has length 362 [2019-05-23 11:25:04,117 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:04,118 INFO L146 ILogger]: With dead ends: 601 [2019-05-23 11:25:04,118 INFO L146 ILogger]: Without dead ends: 382 [2019-05-23 11:25:04,120 INFO L146 ILogger]: 0 DeclaredPredicates, 450 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1897 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2175, Invalid=7725, Unknown=0, NotChecked=0, Total=9900 [2019-05-23 11:25:04,120 INFO L146 ILogger]: Start minimizeSevpa. Operand 382 states. [2019-05-23 11:25:04,125 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 382 to 377. [2019-05-23 11:25:04,125 INFO L146 ILogger]: Start removeUnreachable. Operand 377 states. [2019-05-23 11:25:04,126 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 377 states to 377 states and 381 transitions. [2019-05-23 11:25:04,126 INFO L146 ILogger]: Start accepts. Automaton has 377 states and 381 transitions. Word has length 362 [2019-05-23 11:25:04,127 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:04,127 INFO L146 ILogger]: Abstraction has 377 states and 381 transitions. [2019-05-23 11:25:04,127 INFO L146 ILogger]: Interpolant automaton has 52 states. [2019-05-23 11:25:04,127 INFO L146 ILogger]: Start isEmpty. Operand 377 states and 381 transitions. [2019-05-23 11:25:04,129 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 377 [2019-05-23 11:25:04,129 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:04,130 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 20, 20, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:04,130 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:04,130 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:04,130 INFO L146 ILogger]: Analyzing trace with hash -693820071, now seen corresponding path program 19 times [2019-05-23 11:25:04,131 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:04,131 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:04,131 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:04,132 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:25:04,132 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:04,182 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:05,498 INFO L146 ILogger]: Checked inductivity of 1794 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 1683 trivial. 0 not checked. [2019-05-23 11:25:05,498 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:05,498 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 11:25:05,506 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:05,595 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:05,597 INFO L146 ILogger]: Trace formula consists of 581 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:25:05,600 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:05,854 INFO L146 ILogger]: Checked inductivity of 1794 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 1683 trivial. 0 not checked. [2019-05-23 11:25:05,885 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:05,885 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2019-05-23 11:25:05,886 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:25:05,886 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:25:05,887 INFO L146 ILogger]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:25:05,887 INFO L146 ILogger]: Start difference. First operand 377 states and 381 transitions. Second operand 17 states. [2019-05-23 11:25:06,287 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:06,287 INFO L146 ILogger]: Finished difference Result 588 states and 597 transitions. [2019-05-23 11:25:06,290 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:25:06,290 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 376 [2019-05-23 11:25:06,291 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:06,294 INFO L146 ILogger]: With dead ends: 588 [2019-05-23 11:25:06,294 INFO L146 ILogger]: Without dead ends: 413 [2019-05-23 11:25:06,295 INFO L146 ILogger]: 0 DeclaredPredicates, 402 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:25:06,295 INFO L146 ILogger]: Start minimizeSevpa. Operand 413 states. [2019-05-23 11:25:06,300 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 413 to 398. [2019-05-23 11:25:06,301 INFO L146 ILogger]: Start removeUnreachable. Operand 398 states. [2019-05-23 11:25:06,302 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 398 states to 398 states and 402 transitions. [2019-05-23 11:25:06,302 INFO L146 ILogger]: Start accepts. Automaton has 398 states and 402 transitions. Word has length 376 [2019-05-23 11:25:06,302 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:06,302 INFO L146 ILogger]: Abstraction has 398 states and 402 transitions. [2019-05-23 11:25:06,303 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:25:06,303 INFO L146 ILogger]: Start isEmpty. Operand 398 states and 402 transitions. [2019-05-23 11:25:06,305 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 398 [2019-05-23 11:25:06,305 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:06,305 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 20, 20, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:06,306 INFO L146 ILogger]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:06,306 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:06,306 INFO L146 ILogger]: Analyzing trace with hash 295447288, now seen corresponding path program 20 times [2019-05-23 11:25:06,306 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:06,306 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:06,307 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:06,307 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:06,307 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:06,339 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:06,626 INFO L146 ILogger]: Checked inductivity of 1923 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 1769 trivial. 0 not checked. [2019-05-23 11:25:06,626 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:06,627 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:25:06,635 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:25:06,722 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:25:06,722 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:06,724 INFO L146 ILogger]: Trace formula consists of 614 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:25:06,728 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:06,891 INFO L146 ILogger]: Checked inductivity of 1923 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 1769 trivial. 0 not checked. [2019-05-23 11:25:06,910 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:06,911 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2019-05-23 11:25:06,911 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:25:06,912 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:25:06,912 INFO L146 ILogger]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:25:06,912 INFO L146 ILogger]: Start difference. First operand 398 states and 402 transitions. Second operand 19 states. [2019-05-23 11:25:08,257 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:08,257 INFO L146 ILogger]: Finished difference Result 623 states and 632 transitions. [2019-05-23 11:25:08,258 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:25:08,258 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 397 [2019-05-23 11:25:08,258 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:08,261 INFO L146 ILogger]: With dead ends: 623 [2019-05-23 11:25:08,262 INFO L146 ILogger]: Without dead ends: 434 [2019-05-23 11:25:08,262 INFO L146 ILogger]: 0 DeclaredPredicates, 427 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:25:08,263 INFO L146 ILogger]: Start minimizeSevpa. Operand 434 states. [2019-05-23 11:25:08,269 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 434 to 419. [2019-05-23 11:25:08,269 INFO L146 ILogger]: Start removeUnreachable. Operand 419 states. [2019-05-23 11:25:08,270 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 419 states to 419 states and 423 transitions. [2019-05-23 11:25:08,270 INFO L146 ILogger]: Start accepts. Automaton has 419 states and 423 transitions. Word has length 397 [2019-05-23 11:25:08,270 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:08,271 INFO L146 ILogger]: Abstraction has 419 states and 423 transitions. [2019-05-23 11:25:08,271 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:25:08,271 INFO L146 ILogger]: Start isEmpty. Operand 419 states and 423 transitions. [2019-05-23 11:25:08,273 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 419 [2019-05-23 11:25:08,273 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:08,274 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 20, 20, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:08,274 INFO L146 ILogger]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:08,274 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:08,275 INFO L146 ILogger]: Analyzing trace with hash -1750192071, now seen corresponding path program 21 times [2019-05-23 11:25:08,275 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:08,275 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:08,276 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:08,276 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:25:08,276 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:08,309 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:08,708 INFO L146 ILogger]: Checked inductivity of 2073 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 1869 trivial. 0 not checked. [2019-05-23 11:25:08,708 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:08,709 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:25:08,718 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:25:09,086 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2019-05-23 11:25:09,086 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:09,090 INFO L146 ILogger]: Trace formula consists of 441 conjuncts, 26 conjunts are in the unsatisfiable core [2019-05-23 11:25:09,101 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:09,602 INFO L146 ILogger]: Checked inductivity of 2073 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 1962 trivial. 0 not checked. [2019-05-23 11:25:09,620 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:09,621 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15] total 32 [2019-05-23 11:25:09,621 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:25:09,621 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:25:09,622 INFO L146 ILogger]: CoverageRelationStatistics Valid=161, Invalid=831, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:25:09,622 INFO L146 ILogger]: Start difference. First operand 419 states and 423 transitions. Second operand 32 states. [2019-05-23 11:25:10,530 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:10,530 INFO L146 ILogger]: Finished difference Result 670 states and 680 transitions. [2019-05-23 11:25:10,530 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-05-23 11:25:10,531 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 418 [2019-05-23 11:25:10,531 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:10,534 INFO L146 ILogger]: With dead ends: 670 [2019-05-23 11:25:10,535 INFO L146 ILogger]: Without dead ends: 467 [2019-05-23 11:25:10,536 INFO L146 ILogger]: 0 DeclaredPredicates, 480 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 659 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=645, Invalid=2895, Unknown=0, NotChecked=0, Total=3540 [2019-05-23 11:25:10,537 INFO L146 ILogger]: Start minimizeSevpa. Operand 467 states. [2019-05-23 11:25:10,543 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 467 to 447. [2019-05-23 11:25:10,543 INFO L146 ILogger]: Start removeUnreachable. Operand 447 states. [2019-05-23 11:25:10,544 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 447 states to 447 states and 451 transitions. [2019-05-23 11:25:10,544 INFO L146 ILogger]: Start accepts. Automaton has 447 states and 451 transitions. Word has length 418 [2019-05-23 11:25:10,544 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:10,545 INFO L146 ILogger]: Abstraction has 447 states and 451 transitions. [2019-05-23 11:25:10,545 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:25:10,545 INFO L146 ILogger]: Start isEmpty. Operand 447 states and 451 transitions. [2019-05-23 11:25:10,547 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 447 [2019-05-23 11:25:10,547 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:10,548 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 20, 20, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:10,548 INFO L146 ILogger]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:10,548 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:10,548 INFO L146 ILogger]: Analyzing trace with hash 1783999279, now seen corresponding path program 22 times [2019-05-23 11:25:10,549 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:10,549 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:10,549 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:10,550 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:25:10,550 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:10,586 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:11,039 INFO L146 ILogger]: Checked inductivity of 2287 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 2026 trivial. 0 not checked. [2019-05-23 11:25:11,039 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:11,039 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:25:11,049 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:25:11,458 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:25:11,459 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:11,462 INFO L146 ILogger]: Trace formula consists of 690 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:25:11,465 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:11,640 INFO L146 ILogger]: Checked inductivity of 2287 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 2026 trivial. 0 not checked. [2019-05-23 11:25:11,665 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:11,665 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2019-05-23 11:25:11,666 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:25:11,666 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:25:11,666 INFO L146 ILogger]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:25:11,667 INFO L146 ILogger]: Start difference. First operand 447 states and 451 transitions. Second operand 23 states. [2019-05-23 11:25:12,345 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:12,345 INFO L146 ILogger]: Finished difference Result 707 states and 716 transitions. [2019-05-23 11:25:12,347 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:25:12,348 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 446 [2019-05-23 11:25:12,348 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:12,351 INFO L146 ILogger]: With dead ends: 707 [2019-05-23 11:25:12,351 INFO L146 ILogger]: Without dead ends: 483 [2019-05-23 11:25:12,352 INFO L146 ILogger]: 0 DeclaredPredicates, 484 GetRequests, 445 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:25:12,353 INFO L146 ILogger]: Start minimizeSevpa. Operand 483 states. [2019-05-23 11:25:12,358 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 483 to 468. [2019-05-23 11:25:12,358 INFO L146 ILogger]: Start removeUnreachable. Operand 468 states. [2019-05-23 11:25:12,359 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 468 states to 468 states and 472 transitions. [2019-05-23 11:25:12,359 INFO L146 ILogger]: Start accepts. Automaton has 468 states and 472 transitions. Word has length 446 [2019-05-23 11:25:12,360 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:12,360 INFO L146 ILogger]: Abstraction has 468 states and 472 transitions. [2019-05-23 11:25:12,360 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:25:12,360 INFO L146 ILogger]: Start isEmpty. Operand 468 states and 472 transitions. [2019-05-23 11:25:12,363 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 468 [2019-05-23 11:25:12,363 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:12,363 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 20, 20, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:12,364 INFO L146 ILogger]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:12,364 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:12,364 INFO L146 ILogger]: Analyzing trace with hash 412568508, now seen corresponding path program 23 times [2019-05-23 11:25:12,364 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:12,364 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:12,365 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:12,365 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:25:12,365 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:12,401 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:12,761 INFO L146 ILogger]: Checked inductivity of 2479 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 2154 trivial. 0 not checked. [2019-05-23 11:25:12,761 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:12,761 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:25:12,772 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:25:17,139 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2019-05-23 11:25:17,140 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:17,145 INFO L146 ILogger]: Trace formula consists of 723 conjuncts, 22 conjunts are in the unsatisfiable core [2019-05-23 11:25:17,149 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:17,466 INFO L146 ILogger]: Checked inductivity of 2479 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 2154 trivial. 0 not checked. [2019-05-23 11:25:17,487 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:17,488 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2019-05-23 11:25:17,488 INFO L146 ILogger]: Interpolant automaton has 25 states [2019-05-23 11:25:17,488 INFO L146 ILogger]: Constructing interpolant automaton starting with 25 interpolants. [2019-05-23 11:25:17,489 INFO L146 ILogger]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:25:17,489 INFO L146 ILogger]: Start difference. First operand 468 states and 472 transitions. Second operand 25 states. [2019-05-23 11:25:18,144 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:18,144 INFO L146 ILogger]: Finished difference Result 742 states and 751 transitions. [2019-05-23 11:25:18,145 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-05-23 11:25:18,145 INFO L146 ILogger]: Start accepts. Automaton has 25 states. Word has length 467 [2019-05-23 11:25:18,145 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:18,148 INFO L146 ILogger]: With dead ends: 742 [2019-05-23 11:25:18,148 INFO L146 ILogger]: Without dead ends: 504 [2019-05-23 11:25:18,149 INFO L146 ILogger]: 0 DeclaredPredicates, 529 GetRequests, 486 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=631, Invalid=1349, Unknown=0, NotChecked=0, Total=1980 [2019-05-23 11:25:18,150 INFO L146 ILogger]: Start minimizeSevpa. Operand 504 states. [2019-05-23 11:25:18,154 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 504 to 489. [2019-05-23 11:25:18,154 INFO L146 ILogger]: Start removeUnreachable. Operand 489 states. [2019-05-23 11:25:18,155 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 489 states to 489 states and 493 transitions. [2019-05-23 11:25:18,155 INFO L146 ILogger]: Start accepts. Automaton has 489 states and 493 transitions. Word has length 467 [2019-05-23 11:25:18,156 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:18,156 INFO L146 ILogger]: Abstraction has 489 states and 493 transitions. [2019-05-23 11:25:18,156 INFO L146 ILogger]: Interpolant automaton has 25 states. [2019-05-23 11:25:18,156 INFO L146 ILogger]: Start isEmpty. Operand 489 states and 493 transitions. [2019-05-23 11:25:18,159 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 489 [2019-05-23 11:25:18,160 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:18,160 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 20, 20, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:18,160 INFO L146 ILogger]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:18,161 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:18,161 INFO L146 ILogger]: Analyzing trace with hash -579761969, now seen corresponding path program 24 times [2019-05-23 11:25:18,161 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:18,161 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:18,162 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:18,162 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:25:18,162 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:18,204 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:18,784 INFO L146 ILogger]: Checked inductivity of 2692 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 2296 trivial. 0 not checked. [2019-05-23 11:25:18,784 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:18,784 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:25:18,795 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:25:19,972 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2019-05-23 11:25:19,972 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:19,975 INFO L146 ILogger]: Trace formula consists of 564 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:25:19,978 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:20,339 INFO L146 ILogger]: Checked inductivity of 2692 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 2538 trivial. 0 not checked. [2019-05-23 11:25:20,360 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:20,360 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 17] total 40 [2019-05-23 11:25:20,361 INFO L146 ILogger]: Interpolant automaton has 40 states [2019-05-23 11:25:20,361 INFO L146 ILogger]: Constructing interpolant automaton starting with 40 interpolants. [2019-05-23 11:25:20,361 INFO L146 ILogger]: CoverageRelationStatistics Valid=247, Invalid=1313, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:25:20,362 INFO L146 ILogger]: Start difference. First operand 489 states and 493 transitions. Second operand 40 states. [2019-05-23 11:25:21,620 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:21,621 INFO L146 ILogger]: Finished difference Result 789 states and 799 transitions. [2019-05-23 11:25:21,621 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2019-05-23 11:25:21,621 INFO L146 ILogger]: Start accepts. Automaton has 40 states. Word has length 488 [2019-05-23 11:25:21,622 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:21,625 INFO L146 ILogger]: With dead ends: 789 [2019-05-23 11:25:21,625 INFO L146 ILogger]: Without dead ends: 537 [2019-05-23 11:25:21,626 INFO L146 ILogger]: 0 DeclaredPredicates, 570 GetRequests, 496 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1097 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1035, Invalid=4665, Unknown=0, NotChecked=0, Total=5700 [2019-05-23 11:25:21,627 INFO L146 ILogger]: Start minimizeSevpa. Operand 537 states. [2019-05-23 11:25:21,631 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 537 to 517. [2019-05-23 11:25:21,632 INFO L146 ILogger]: Start removeUnreachable. Operand 517 states. [2019-05-23 11:25:21,633 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 517 states to 517 states and 521 transitions. [2019-05-23 11:25:21,633 INFO L146 ILogger]: Start accepts. Automaton has 517 states and 521 transitions. Word has length 488 [2019-05-23 11:25:21,633 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:21,633 INFO L146 ILogger]: Abstraction has 517 states and 521 transitions. [2019-05-23 11:25:21,633 INFO L146 ILogger]: Interpolant automaton has 40 states. [2019-05-23 11:25:21,634 INFO L146 ILogger]: Start isEmpty. Operand 517 states and 521 transitions. [2019-05-23 11:25:21,636 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 517 [2019-05-23 11:25:21,637 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:21,637 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 20, 20, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:21,637 INFO L146 ILogger]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:21,637 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:21,638 INFO L146 ILogger]: Analyzing trace with hash 699551897, now seen corresponding path program 25 times [2019-05-23 11:25:21,638 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:21,638 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:21,638 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:21,639 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:25:21,639 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:21,680 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:22,333 INFO L146 ILogger]: Checked inductivity of 2976 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 2502 trivial. 0 not checked. [2019-05-23 11:25:22,334 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:22,334 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:25:22,342 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:22,453 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:22,455 INFO L146 ILogger]: Trace formula consists of 799 conjuncts, 26 conjunts are in the unsatisfiable core [2019-05-23 11:25:22,460 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:22,756 INFO L146 ILogger]: Checked inductivity of 2976 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 2502 trivial. 0 not checked. [2019-05-23 11:25:22,809 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:22,809 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2019-05-23 11:25:22,810 INFO L146 ILogger]: Interpolant automaton has 29 states [2019-05-23 11:25:22,811 INFO L146 ILogger]: Constructing interpolant automaton starting with 29 interpolants. [2019-05-23 11:25:22,811 INFO L146 ILogger]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:25:22,811 INFO L146 ILogger]: Start difference. First operand 517 states and 521 transitions. Second operand 29 states. [2019-05-23 11:25:23,916 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:23,917 INFO L146 ILogger]: Finished difference Result 826 states and 835 transitions. [2019-05-23 11:25:23,917 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:25:23,917 INFO L146 ILogger]: Start accepts. Automaton has 29 states. Word has length 516 [2019-05-23 11:25:23,918 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:23,921 INFO L146 ILogger]: With dead ends: 826 [2019-05-23 11:25:23,921 INFO L146 ILogger]: Without dead ends: 553 [2019-05-23 11:25:23,922 INFO L146 ILogger]: 0 DeclaredPredicates, 566 GetRequests, 515 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=875, Invalid=1881, Unknown=0, NotChecked=0, Total=2756 [2019-05-23 11:25:23,923 INFO L146 ILogger]: Start minimizeSevpa. Operand 553 states. [2019-05-23 11:25:23,928 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 553 to 538. [2019-05-23 11:25:23,928 INFO L146 ILogger]: Start removeUnreachable. Operand 538 states. [2019-05-23 11:25:23,929 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 538 states to 538 states and 542 transitions. [2019-05-23 11:25:23,929 INFO L146 ILogger]: Start accepts. Automaton has 538 states and 542 transitions. Word has length 516 [2019-05-23 11:25:23,930 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:23,930 INFO L146 ILogger]: Abstraction has 538 states and 542 transitions. [2019-05-23 11:25:23,930 INFO L146 ILogger]: Interpolant automaton has 29 states. [2019-05-23 11:25:23,930 INFO L146 ILogger]: Start isEmpty. Operand 538 states and 542 transitions. [2019-05-23 11:25:23,933 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 538 [2019-05-23 11:25:23,933 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:23,933 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 20, 20, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:23,934 INFO L146 ILogger]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:23,934 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:23,934 INFO L146 ILogger]: Analyzing trace with hash 1131962104, now seen corresponding path program 26 times [2019-05-23 11:25:23,934 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:23,934 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:23,935 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:23,935 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:25:23,935 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:23,969 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:24,925 INFO L146 ILogger]: Checked inductivity of 3231 backedges. 0 proven. 559 refuted. 0 times theorem prover too weak. 2672 trivial. 0 not checked. [2019-05-23 11:25:24,925 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:25:24,925 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:25:24,935 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:25:25,056 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:25:25,056 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:25:25,058 INFO L146 ILogger]: Trace formula consists of 832 conjuncts, 28 conjunts are in the unsatisfiable core [2019-05-23 11:25:25,063 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:25:25,212 INFO L146 ILogger]: Checked inductivity of 3231 backedges. 0 proven. 559 refuted. 0 times theorem prover too weak. 2672 trivial. 0 not checked. [2019-05-23 11:25:25,231 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:25:25,232 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2019-05-23 11:25:25,232 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:25:25,232 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:25:25,233 INFO L146 ILogger]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:25:25,233 INFO L146 ILogger]: Start difference. First operand 538 states and 542 transitions. Second operand 31 states. [2019-05-23 11:25:26,061 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:25:26,061 INFO L146 ILogger]: Finished difference Result 861 states and 870 transitions. [2019-05-23 11:25:26,062 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-05-23 11:25:26,062 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 537 [2019-05-23 11:25:26,062 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:25:26,065 INFO L146 ILogger]: With dead ends: 861 [2019-05-23 11:25:26,065 INFO L146 ILogger]: Without dead ends: 574 [2019-05-23 11:25:26,066 INFO L146 ILogger]: 0 DeclaredPredicates, 591 GetRequests, 536 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2019-05-23 11:25:26,067 INFO L146 ILogger]: Start minimizeSevpa. Operand 574 states. [2019-05-23 11:25:26,073 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 574 to 559. [2019-05-23 11:25:26,073 INFO L146 ILogger]: Start removeUnreachable. Operand 559 states. [2019-05-23 11:25:26,074 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 559 states to 559 states and 563 transitions. [2019-05-23 11:25:26,074 INFO L146 ILogger]: Start accepts. Automaton has 559 states and 563 transitions. Word has length 537 [2019-05-23 11:25:26,075 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:25:26,075 INFO L146 ILogger]: Abstraction has 559 states and 563 transitions. [2019-05-23 11:25:26,075 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:25:26,075 INFO L146 ILogger]: Start isEmpty. Operand 559 states and 563 transitions. [2019-05-23 11:25:26,078 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 559 [2019-05-23 11:25:26,078 INFO L146 ILogger]: Found error trace [2019-05-23 11:25:26,079 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 20, 20, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:25:26,079 INFO L146 ILogger]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:25:26,079 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:25:26,080 INFO L146 ILogger]: Analyzing trace with hash -1867852935, now seen corresponding path program 27 times [2019-05-23 11:25:26,080 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:25:26,080 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:25:26,080 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:26,081 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:25:26,081 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:25:26,117 INFO L146 ILogger]: Conjunction of SSA is unsat