java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/array-examples/standard_init9_false-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:15:29,857 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:15:29,859 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:15:29,872 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:15:29,872 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:15:29,874 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:15:29,876 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:15:29,879 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:15:29,889 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:15:29,890 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:15:29,891 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:15:29,892 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:15:29,895 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:15:29,896 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:15:29,897 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:15:29,898 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:15:29,899 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:15:29,903 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:15:29,908 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:15:29,910 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:15:29,911 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:15:29,915 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:15:29,919 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:15:29,920 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:15:29,920 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:15:29,922 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:15:29,922 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:15:29,924 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:15:29,924 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:15:29,925 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:15:29,928 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:15:29,929 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:15:29,930 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:15:29,930 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:15:29,931 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:15:29,931 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:15:29,932 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:15:29,933 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:15:29,933 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:15:29,934 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:15:29,961 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:15:29,961 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:15:29,962 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:15:29,963 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:15:29,963 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:15:29,963 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:15:29,963 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:15:29,964 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:15:29,964 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:15:29,964 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:15:29,964 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:15:29,964 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:15:29,964 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:15:29,966 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:15:29,966 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:15:29,966 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:15:29,966 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:15:29,967 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:15:29,967 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:15:29,967 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:15:29,967 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:15:29,967 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:15:29,968 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:15:29,969 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:15:29,969 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:15:29,969 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:15:29,969 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:15:29,969 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:15:29,970 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 11:15:30,000 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:15:30,014 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:15:30,017 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:15:30,018 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:15:30,018 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:15:30,019 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_init9_false-unreach-call_ground.i [2019-05-23 11:15:30,070 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f297e89d8/08a43e22f53147ac913624d94d3f4aa7/FLAG9a3f9fd74 [2019-05-23 11:15:30,483 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:15:30,484 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_init9_false-unreach-call_ground.i [2019-05-23 11:15:30,492 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f297e89d8/08a43e22f53147ac913624d94d3f4aa7/FLAG9a3f9fd74 [2019-05-23 11:15:30,859 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f297e89d8/08a43e22f53147ac913624d94d3f4aa7 [2019-05-23 11:15:30,868 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:15:30,869 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:15:30,870 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:15:30,871 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:15:30,874 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:15:30,875 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:15:30" (1/1) ... [2019-05-23 11:15:30,878 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e587402 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:30, skipping insertion in model container [2019-05-23 11:15:30,879 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:15:30" (1/1) ... [2019-05-23 11:15:30,886 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:15:30,906 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:15:31,101 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:15:31,105 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:15:31,135 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:15:31,157 INFO L146 ILogger]: Completed translation [2019-05-23 11:15:31,158 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31 WrapperNode [2019-05-23 11:15:31,158 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:15:31,159 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:15:31,159 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:15:31,159 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:15:31,168 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31" (1/1) ... [2019-05-23 11:15:31,177 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31" (1/1) ... [2019-05-23 11:15:31,202 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:15:31,202 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:15:31,202 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:15:31,203 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:15:31,211 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31" (1/1) ... [2019-05-23 11:15:31,211 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31" (1/1) ... [2019-05-23 11:15:31,213 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31" (1/1) ... [2019-05-23 11:15:31,214 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31" (1/1) ... [2019-05-23 11:15:31,221 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31" (1/1) ... [2019-05-23 11:15:31,229 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31" (1/1) ... [2019-05-23 11:15:31,230 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31" (1/1) ... [2019-05-23 11:15:31,324 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:15:31,324 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:15:31,325 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:15:31,325 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:15:31,326 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31" (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 11:15:31,392 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:15:31,393 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:15:31,393 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:15:31,393 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:15:31,393 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:15:31,393 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:15:31,917 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:15:31,917 INFO L146 ILogger]: Removed 16 assume(true) statements. [2019-05-23 11:15:31,919 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:15:31 BoogieIcfgContainer [2019-05-23 11:15:31,919 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:15:31,920 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:15:31,920 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:15:31,924 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:15:31,924 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:15:30" (1/3) ... [2019-05-23 11:15:31,925 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca13ad4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:15:31, skipping insertion in model container [2019-05-23 11:15:31,926 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31" (2/3) ... [2019-05-23 11:15:31,926 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca13ad4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:15:31, skipping insertion in model container [2019-05-23 11:15:31,926 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:15:31" (3/3) ... [2019-05-23 11:15:31,928 INFO L146 ILogger]: Analyzing ICFG standard_init9_false-unreach-call_ground.i [2019-05-23 11:15:31,937 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:15:31,944 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:15:31,960 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:15:31,986 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:15:31,987 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:15:31,987 INFO L146 ILogger]: Hoare is true [2019-05-23 11:15:31,988 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:15:31,988 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:15:31,988 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:15:31,988 INFO L146 ILogger]: Difference is false [2019-05-23 11:15:31,989 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:15:31,989 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:15:32,006 INFO L146 ILogger]: Start isEmpty. Operand 61 states. [2019-05-23 11:15:32,014 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 33 [2019-05-23 11:15:32,014 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:32,015 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] [2019-05-23 11:15:32,018 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:32,023 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:32,024 INFO L146 ILogger]: Analyzing trace with hash -2080952448, now seen corresponding path program 1 times [2019-05-23 11:15:32,026 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:32,026 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:32,068 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:32,068 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:32,068 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:32,110 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:32,148 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 11:15:32,151 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:15:32,151 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:15:32,155 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:15:32,167 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:15:32,168 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:15:32,170 INFO L146 ILogger]: Start difference. First operand 61 states. Second operand 2 states. [2019-05-23 11:15:32,189 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:32,189 INFO L146 ILogger]: Finished difference Result 113 states and 151 transitions. [2019-05-23 11:15:32,189 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:15:32,191 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 32 [2019-05-23 11:15:32,191 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:32,201 INFO L146 ILogger]: With dead ends: 113 [2019-05-23 11:15:32,201 INFO L146 ILogger]: Without dead ends: 55 [2019-05-23 11:15:32,205 INFO L146 ILogger]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:15:32,219 INFO L146 ILogger]: Start minimizeSevpa. Operand 55 states. [2019-05-23 11:15:32,235 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 55 to 55. [2019-05-23 11:15:32,236 INFO L146 ILogger]: Start removeUnreachable. Operand 55 states. [2019-05-23 11:15:32,238 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2019-05-23 11:15:32,240 INFO L146 ILogger]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 32 [2019-05-23 11:15:32,240 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:32,240 INFO L146 ILogger]: Abstraction has 55 states and 64 transitions. [2019-05-23 11:15:32,240 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:15:32,240 INFO L146 ILogger]: Start isEmpty. Operand 55 states and 64 transitions. [2019-05-23 11:15:32,242 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 33 [2019-05-23 11:15:32,242 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:32,242 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] [2019-05-23 11:15:32,242 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:32,243 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:32,243 INFO L146 ILogger]: Analyzing trace with hash -68649576, now seen corresponding path program 1 times [2019-05-23 11:15:32,243 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:32,243 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:32,244 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:32,245 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:32,245 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:32,259 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:32,300 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 11:15:32,301 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:15:32,301 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:15:32,303 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:15:32,303 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:15:32,303 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:15:32,304 INFO L146 ILogger]: Start difference. First operand 55 states and 64 transitions. Second operand 3 states. [2019-05-23 11:15:32,788 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:32,789 INFO L146 ILogger]: Finished difference Result 128 states and 154 transitions. [2019-05-23 11:15:32,789 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:15:32,789 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 32 [2019-05-23 11:15:32,790 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:32,792 INFO L146 ILogger]: With dead ends: 128 [2019-05-23 11:15:32,792 INFO L146 ILogger]: Without dead ends: 82 [2019-05-23 11:15:32,793 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 11:15:32,794 INFO L146 ILogger]: Start minimizeSevpa. Operand 82 states. [2019-05-23 11:15:32,802 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 82 to 64. [2019-05-23 11:15:32,802 INFO L146 ILogger]: Start removeUnreachable. Operand 64 states. [2019-05-23 11:15:32,803 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 64 states to 64 states and 73 transitions. [2019-05-23 11:15:32,804 INFO L146 ILogger]: Start accepts. Automaton has 64 states and 73 transitions. Word has length 32 [2019-05-23 11:15:32,804 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:32,804 INFO L146 ILogger]: Abstraction has 64 states and 73 transitions. [2019-05-23 11:15:32,805 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:15:32,805 INFO L146 ILogger]: Start isEmpty. Operand 64 states and 73 transitions. [2019-05-23 11:15:32,806 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 60 [2019-05-23 11:15:32,807 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:32,807 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] [2019-05-23 11:15:32,807 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:32,808 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:32,808 INFO L146 ILogger]: Analyzing trace with hash 186587740, now seen corresponding path program 1 times [2019-05-23 11:15:32,808 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:32,808 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:32,809 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:32,810 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:32,810 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:32,870 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:33,031 INFO L146 ILogger]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-05-23 11:15:33,032 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:33,032 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 11:15:33,053 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:33,110 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:33,112 INFO L146 ILogger]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:15:33,123 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:33,188 INFO L146 ILogger]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-05-23 11:15:33,217 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:33,217 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-05-23 11:15:33,218 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:15:33,218 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:15:33,219 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:15:33,220 INFO L146 ILogger]: Start difference. First operand 64 states and 73 transitions. Second operand 5 states. [2019-05-23 11:15:33,857 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:33,858 INFO L146 ILogger]: Finished difference Result 163 states and 189 transitions. [2019-05-23 11:15:33,860 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:15:33,860 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 59 [2019-05-23 11:15:33,860 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:33,862 INFO L146 ILogger]: With dead ends: 163 [2019-05-23 11:15:33,862 INFO L146 ILogger]: Without dead ends: 109 [2019-05-23 11:15:33,865 INFO L146 ILogger]: 0 DeclaredPredicates, 62 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:15:33,866 INFO L146 ILogger]: Start minimizeSevpa. Operand 109 states. [2019-05-23 11:15:33,886 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 109 to 91. [2019-05-23 11:15:33,887 INFO L146 ILogger]: Start removeUnreachable. Operand 91 states. [2019-05-23 11:15:33,890 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2019-05-23 11:15:33,890 INFO L146 ILogger]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 59 [2019-05-23 11:15:33,890 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:33,890 INFO L146 ILogger]: Abstraction has 91 states and 100 transitions. [2019-05-23 11:15:33,890 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:15:33,891 INFO L146 ILogger]: Start isEmpty. Operand 91 states and 100 transitions. [2019-05-23 11:15:33,895 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 87 [2019-05-23 11:15:33,895 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:33,895 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:15:33,896 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:33,898 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:33,898 INFO L146 ILogger]: Analyzing trace with hash -1502760168, now seen corresponding path program 2 times [2019-05-23 11:15:33,898 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:33,898 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:33,899 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:33,899 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:33,900 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:33,993 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:34,111 INFO L146 ILogger]: Checked inductivity of 45 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-05-23 11:15:34,112 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:34,112 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 11:15:34,131 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:15:34,175 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:15:34,175 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:34,176 INFO L146 ILogger]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:15:34,180 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:34,228 INFO L146 ILogger]: Checked inductivity of 45 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-05-23 11:15:34,247 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:34,247 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-05-23 11:15:34,249 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:15:34,250 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:15:34,250 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:15:34,250 INFO L146 ILogger]: Start difference. First operand 91 states and 100 transitions. Second operand 6 states. [2019-05-23 11:15:34,713 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:34,713 INFO L146 ILogger]: Finished difference Result 214 states and 240 transitions. [2019-05-23 11:15:34,714 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:15:34,714 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 86 [2019-05-23 11:15:34,714 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:34,716 INFO L146 ILogger]: With dead ends: 214 [2019-05-23 11:15:34,716 INFO L146 ILogger]: Without dead ends: 136 [2019-05-23 11:15:34,718 INFO L146 ILogger]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:15:34,719 INFO L146 ILogger]: Start minimizeSevpa. Operand 136 states. [2019-05-23 11:15:34,729 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 136 to 118. [2019-05-23 11:15:34,730 INFO L146 ILogger]: Start removeUnreachable. Operand 118 states. [2019-05-23 11:15:34,731 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 118 states to 118 states and 127 transitions. [2019-05-23 11:15:34,731 INFO L146 ILogger]: Start accepts. Automaton has 118 states and 127 transitions. Word has length 86 [2019-05-23 11:15:34,732 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:34,732 INFO L146 ILogger]: Abstraction has 118 states and 127 transitions. [2019-05-23 11:15:34,732 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:15:34,732 INFO L146 ILogger]: Start isEmpty. Operand 118 states and 127 transitions. [2019-05-23 11:15:34,734 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 114 [2019-05-23 11:15:34,734 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:34,734 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:34,735 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:34,735 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:34,735 INFO L146 ILogger]: Analyzing trace with hash -1851939364, now seen corresponding path program 3 times [2019-05-23 11:15:34,735 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:34,736 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:34,737 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:34,737 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:34,737 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:34,791 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:34,919 INFO L146 ILogger]: Checked inductivity of 108 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:15:34,919 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:34,920 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 11:15:34,931 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:15:35,101 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:15:35,101 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:35,103 INFO L146 ILogger]: Trace formula consists of 166 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:15:35,108 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:35,150 INFO L146 ILogger]: Checked inductivity of 108 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:15:35,170 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:35,170 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-05-23 11:15:35,170 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:15:35,171 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:15:35,171 INFO L146 ILogger]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:15:35,171 INFO L146 ILogger]: Start difference. First operand 118 states and 127 transitions. Second operand 7 states. [2019-05-23 11:15:35,792 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:35,793 INFO L146 ILogger]: Finished difference Result 265 states and 291 transitions. [2019-05-23 11:15:35,793 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:15:35,793 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 113 [2019-05-23 11:15:35,793 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:35,796 INFO L146 ILogger]: With dead ends: 265 [2019-05-23 11:15:35,797 INFO L146 ILogger]: Without dead ends: 163 [2019-05-23 11:15:35,798 INFO L146 ILogger]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:15:35,798 INFO L146 ILogger]: Start minimizeSevpa. Operand 163 states. [2019-05-23 11:15:35,814 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 163 to 145. [2019-05-23 11:15:35,814 INFO L146 ILogger]: Start removeUnreachable. Operand 145 states. [2019-05-23 11:15:35,819 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 145 states to 145 states and 154 transitions. [2019-05-23 11:15:35,822 INFO L146 ILogger]: Start accepts. Automaton has 145 states and 154 transitions. Word has length 113 [2019-05-23 11:15:35,823 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:35,823 INFO L146 ILogger]: Abstraction has 145 states and 154 transitions. [2019-05-23 11:15:35,823 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:15:35,823 INFO L146 ILogger]: Start isEmpty. Operand 145 states and 154 transitions. [2019-05-23 11:15:35,828 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 141 [2019-05-23 11:15:35,828 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:35,828 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:15:35,829 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:35,829 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:35,829 INFO L146 ILogger]: Analyzing trace with hash -869922664, now seen corresponding path program 4 times [2019-05-23 11:15:35,829 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:35,829 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:35,832 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:35,832 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:35,832 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:35,896 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:35,998 INFO L146 ILogger]: Checked inductivity of 198 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-05-23 11:15:35,999 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:35,999 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 11:15:36,012 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:15:36,073 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:15:36,073 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:36,074 INFO L146 ILogger]: Trace formula consists of 202 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:15:36,079 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:36,211 INFO L146 ILogger]: Checked inductivity of 198 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-05-23 11:15:36,243 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:36,244 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-05-23 11:15:36,244 INFO L146 ILogger]: Interpolant automaton has 8 states [2019-05-23 11:15:36,245 INFO L146 ILogger]: Constructing interpolant automaton starting with 8 interpolants. [2019-05-23 11:15:36,245 INFO L146 ILogger]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:15:36,245 INFO L146 ILogger]: Start difference. First operand 145 states and 154 transitions. Second operand 8 states. [2019-05-23 11:15:36,892 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:36,892 INFO L146 ILogger]: Finished difference Result 316 states and 342 transitions. [2019-05-23 11:15:36,892 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:15:36,893 INFO L146 ILogger]: Start accepts. Automaton has 8 states. Word has length 140 [2019-05-23 11:15:36,893 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:36,894 INFO L146 ILogger]: With dead ends: 316 [2019-05-23 11:15:36,894 INFO L146 ILogger]: Without dead ends: 190 [2019-05-23 11:15:36,895 INFO L146 ILogger]: 0 DeclaredPredicates, 146 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:15:36,896 INFO L146 ILogger]: Start minimizeSevpa. Operand 190 states. [2019-05-23 11:15:36,905 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 190 to 172. [2019-05-23 11:15:36,905 INFO L146 ILogger]: Start removeUnreachable. Operand 172 states. [2019-05-23 11:15:36,906 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 172 states to 172 states and 181 transitions. [2019-05-23 11:15:36,907 INFO L146 ILogger]: Start accepts. Automaton has 172 states and 181 transitions. Word has length 140 [2019-05-23 11:15:36,907 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:36,907 INFO L146 ILogger]: Abstraction has 172 states and 181 transitions. [2019-05-23 11:15:36,907 INFO L146 ILogger]: Interpolant automaton has 8 states. [2019-05-23 11:15:36,907 INFO L146 ILogger]: Start isEmpty. Operand 172 states and 181 transitions. [2019-05-23 11:15:36,909 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 168 [2019-05-23 11:15:36,909 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:36,910 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:15:36,910 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:36,910 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:36,910 INFO L146 ILogger]: Analyzing trace with hash -166948516, now seen corresponding path program 5 times [2019-05-23 11:15:36,911 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:36,911 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:36,912 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:36,912 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:36,912 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:36,954 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:37,063 INFO L146 ILogger]: Checked inductivity of 315 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2019-05-23 11:15:37,063 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:37,064 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:15:37,072 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:16:04,927 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-05-23 11:16:04,927 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:04,947 INFO L146 ILogger]: Trace formula consists of 238 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:16:04,951 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:04,993 INFO L146 ILogger]: Checked inductivity of 315 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2019-05-23 11:16:05,017 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:05,018 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2019-05-23 11:16:05,018 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:16:05,019 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:16:05,019 INFO L146 ILogger]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:16:05,019 INFO L146 ILogger]: Start difference. First operand 172 states and 181 transitions. Second operand 9 states. [2019-05-23 11:16:05,574 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:05,575 INFO L146 ILogger]: Finished difference Result 367 states and 393 transitions. [2019-05-23 11:16:05,575 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:16:05,575 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 167 [2019-05-23 11:16:05,575 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:05,577 INFO L146 ILogger]: With dead ends: 367 [2019-05-23 11:16:05,577 INFO L146 ILogger]: Without dead ends: 217 [2019-05-23 11:16:05,578 INFO L146 ILogger]: 0 DeclaredPredicates, 174 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:16:05,578 INFO L146 ILogger]: Start minimizeSevpa. Operand 217 states. [2019-05-23 11:16:05,587 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 217 to 199. [2019-05-23 11:16:05,587 INFO L146 ILogger]: Start removeUnreachable. Operand 199 states. [2019-05-23 11:16:05,588 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 199 states to 199 states and 208 transitions. [2019-05-23 11:16:05,588 INFO L146 ILogger]: Start accepts. Automaton has 199 states and 208 transitions. Word has length 167 [2019-05-23 11:16:05,589 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:05,589 INFO L146 ILogger]: Abstraction has 199 states and 208 transitions. [2019-05-23 11:16:05,589 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:16:05,589 INFO L146 ILogger]: Start isEmpty. Operand 199 states and 208 transitions. [2019-05-23 11:16:05,592 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 195 [2019-05-23 11:16:05,592 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:05,592 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:16:05,593 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:05,593 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:05,593 INFO L146 ILogger]: Analyzing trace with hash 1063353880, now seen corresponding path program 6 times [2019-05-23 11:16:05,593 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:05,593 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:05,594 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:05,594 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:05,594 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:05,638 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:05,817 INFO L146 ILogger]: Checked inductivity of 459 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2019-05-23 11:16:05,817 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:05,817 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 11:16:05,826 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:16:26,257 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-05-23 11:16:26,258 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:26,275 INFO L146 ILogger]: Trace formula consists of 274 conjuncts, 11 conjunts are in the unsatisfiable core [2019-05-23 11:16:26,278 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:26,362 INFO L146 ILogger]: Checked inductivity of 459 backedges. 16 proven. 51 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2019-05-23 11:16:26,386 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:26,386 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 12 [2019-05-23 11:16:26,387 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:16:26,387 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:16:26,387 INFO L146 ILogger]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:16:26,387 INFO L146 ILogger]: Start difference. First operand 199 states and 208 transitions. Second operand 12 states. [2019-05-23 11:16:27,167 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:27,168 INFO L146 ILogger]: Finished difference Result 427 states and 462 transitions. [2019-05-23 11:16:27,168 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 11:16:27,168 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 194 [2019-05-23 11:16:27,169 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:27,170 INFO L146 ILogger]: With dead ends: 427 [2019-05-23 11:16:27,170 INFO L146 ILogger]: Without dead ends: 253 [2019-05-23 11:16:27,171 INFO L146 ILogger]: 0 DeclaredPredicates, 202 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:16:27,171 INFO L146 ILogger]: Start minimizeSevpa. Operand 253 states. [2019-05-23 11:16:27,180 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 253 to 253. [2019-05-23 11:16:27,180 INFO L146 ILogger]: Start removeUnreachable. Operand 253 states. [2019-05-23 11:16:27,181 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 253 states to 253 states and 262 transitions. [2019-05-23 11:16:27,182 INFO L146 ILogger]: Start accepts. Automaton has 253 states and 262 transitions. Word has length 194 [2019-05-23 11:16:27,182 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:27,182 INFO L146 ILogger]: Abstraction has 253 states and 262 transitions. [2019-05-23 11:16:27,182 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:16:27,182 INFO L146 ILogger]: Start isEmpty. Operand 253 states and 262 transitions. [2019-05-23 11:16:27,185 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 249 [2019-05-23 11:16:27,185 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:27,186 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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] [2019-05-23 11:16:27,186 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:27,186 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:27,186 INFO L146 ILogger]: Analyzing trace with hash -797961320, now seen corresponding path program 7 times [2019-05-23 11:16:27,187 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:27,187 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:27,188 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:27,188 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:27,188 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:27,229 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:27,528 INFO L146 ILogger]: Checked inductivity of 828 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 736 trivial. 0 not checked. [2019-05-23 11:16:27,529 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:27,529 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 11:16:27,538 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:27,593 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:27,595 INFO L146 ILogger]: Trace formula consists of 346 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:16:27,597 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:27,648 INFO L146 ILogger]: Checked inductivity of 828 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 736 trivial. 0 not checked. [2019-05-23 11:16:27,667 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:27,668 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-05-23 11:16:27,668 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:16:27,668 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:16:27,669 INFO L146 ILogger]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:16:27,669 INFO L146 ILogger]: Start difference. First operand 253 states and 262 transitions. Second operand 12 states. [2019-05-23 11:16:28,307 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:28,308 INFO L146 ILogger]: Finished difference Result 520 states and 546 transitions. [2019-05-23 11:16:28,309 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 11:16:28,309 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 248 [2019-05-23 11:16:28,310 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:28,312 INFO L146 ILogger]: With dead ends: 520 [2019-05-23 11:16:28,313 INFO L146 ILogger]: Without dead ends: 298 [2019-05-23 11:16:28,313 INFO L146 ILogger]: 0 DeclaredPredicates, 258 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:16:28,314 INFO L146 ILogger]: Start minimizeSevpa. Operand 298 states. [2019-05-23 11:16:28,321 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 298 to 280. [2019-05-23 11:16:28,322 INFO L146 ILogger]: Start removeUnreachable. Operand 280 states. [2019-05-23 11:16:28,323 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 280 states to 280 states and 289 transitions. [2019-05-23 11:16:28,323 INFO L146 ILogger]: Start accepts. Automaton has 280 states and 289 transitions. Word has length 248 [2019-05-23 11:16:28,323 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:28,323 INFO L146 ILogger]: Abstraction has 280 states and 289 transitions. [2019-05-23 11:16:28,324 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:16:28,324 INFO L146 ILogger]: Start isEmpty. Operand 280 states and 289 transitions. [2019-05-23 11:16:28,327 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 276 [2019-05-23 11:16:28,327 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:28,328 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:28,328 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:28,328 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:28,328 INFO L146 ILogger]: Analyzing trace with hash 1870366812, now seen corresponding path program 8 times [2019-05-23 11:16:28,329 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:28,329 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:28,330 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:28,330 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:16:28,330 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:28,370 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:29,230 INFO L146 ILogger]: Checked inductivity of 1053 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 936 trivial. 0 not checked. [2019-05-23 11:16:29,231 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:29,231 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 11:16:29,240 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:16:29,301 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:16:29,301 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:29,303 INFO L146 ILogger]: Trace formula consists of 382 conjuncts, 11 conjunts are in the unsatisfiable core [2019-05-23 11:16:29,306 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:29,446 INFO L146 ILogger]: Checked inductivity of 1053 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 936 trivial. 0 not checked. [2019-05-23 11:16:29,477 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:29,478 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2019-05-23 11:16:29,478 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:16:29,479 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:16:29,481 INFO L146 ILogger]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:16:29,482 INFO L146 ILogger]: Start difference. First operand 280 states and 289 transitions. Second operand 13 states. [2019-05-23 11:16:30,253 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:30,254 INFO L146 ILogger]: Finished difference Result 571 states and 597 transitions. [2019-05-23 11:16:30,254 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:16:30,254 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 275 [2019-05-23 11:16:30,255 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:30,257 INFO L146 ILogger]: With dead ends: 571 [2019-05-23 11:16:30,257 INFO L146 ILogger]: Without dead ends: 325 [2019-05-23 11:16:30,259 INFO L146 ILogger]: 0 DeclaredPredicates, 286 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:16:30,260 INFO L146 ILogger]: Start minimizeSevpa. Operand 325 states. [2019-05-23 11:16:30,267 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 325 to 307. [2019-05-23 11:16:30,267 INFO L146 ILogger]: Start removeUnreachable. Operand 307 states. [2019-05-23 11:16:30,268 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 307 states to 307 states and 316 transitions. [2019-05-23 11:16:30,268 INFO L146 ILogger]: Start accepts. Automaton has 307 states and 316 transitions. Word has length 275 [2019-05-23 11:16:30,268 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:30,269 INFO L146 ILogger]: Abstraction has 307 states and 316 transitions. [2019-05-23 11:16:30,269 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:16:30,269 INFO L146 ILogger]: Start isEmpty. Operand 307 states and 316 transitions. [2019-05-23 11:16:30,270 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 303 [2019-05-23 11:16:30,271 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:30,271 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:16:30,271 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:30,271 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:30,272 INFO L146 ILogger]: Analyzing trace with hash 1302448408, now seen corresponding path program 9 times [2019-05-23 11:16:30,272 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:30,272 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:30,273 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:30,273 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:30,273 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:30,352 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:30,597 INFO L146 ILogger]: Checked inductivity of 1305 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 1160 trivial. 0 not checked. [2019-05-23 11:16:30,598 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:30,598 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 11:16:30,608 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2