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-tiling/skipped_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:26:38,830 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:26:38,832 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:26:38,848 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:26:38,848 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:26:38,849 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:26:38,851 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:26:38,853 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:26:38,855 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:26:38,856 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:26:38,857 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:26:38,857 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:26:38,858 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:26:38,859 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:26:38,860 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:26:38,861 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:26:38,862 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:26:38,864 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:26:38,866 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:26:38,868 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:26:38,869 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:26:38,873 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:26:38,878 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:26:38,879 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:26:38,879 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:26:38,880 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:26:38,880 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:26:38,881 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:26:38,881 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:26:38,882 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:26:38,883 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:26:38,884 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:26:38,885 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:26:38,885 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:26:38,886 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:26:38,886 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:26:38,886 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:26:38,887 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:26:38,888 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:26:38,888 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:26:38,915 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:26:38,915 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:26:38,916 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:26:38,916 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:26:38,916 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:26:38,917 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:26:38,917 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:26:38,917 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:26:38,917 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:26:38,918 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:26:38,918 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:26:38,919 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:26:38,919 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:26:38,919 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:26:38,919 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:26:38,919 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:26:38,919 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:26:38,921 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:26:38,921 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:26:38,921 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:26:38,921 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:26:38,921 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:26:38,921 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:26:38,922 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:26:38,923 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:26:38,923 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:26:38,923 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:26:38,923 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:26:38,924 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 11:26:38,961 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:26:38,974 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:26:38,977 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:26:38,979 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:26:38,979 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:26:38,980 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-tiling/skipped_true-unreach-call.i [2019-05-23 11:26:39,033 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f56e0cfe/7512a79745054e13997bc82c9c0aef75/FLAG638fc25e2 [2019-05-23 11:26:39,422 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:26:39,423 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-tiling/skipped_true-unreach-call.i [2019-05-23 11:26:39,428 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f56e0cfe/7512a79745054e13997bc82c9c0aef75/FLAG638fc25e2 [2019-05-23 11:26:39,810 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f56e0cfe/7512a79745054e13997bc82c9c0aef75 [2019-05-23 11:26:39,820 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:26:39,821 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:26:39,822 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:26:39,822 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:26:39,826 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:26:39,827 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:26:39" (1/1) ... [2019-05-23 11:26:39,830 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21eb12aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:39, skipping insertion in model container [2019-05-23 11:26:39,830 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:26:39" (1/1) ... [2019-05-23 11:26:39,838 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:26:39,862 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:26:40,098 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:26:40,107 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:26:40,139 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:26:40,168 INFO L146 ILogger]: Completed translation [2019-05-23 11:26:40,169 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:40 WrapperNode [2019-05-23 11:26:40,169 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:26:40,169 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:26:40,170 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:26:40,170 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:26:40,177 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:40" (1/1) ... [2019-05-23 11:26:40,185 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:40" (1/1) ... [2019-05-23 11:26:40,205 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:26:40,205 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:26:40,205 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:26:40,205 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:26:40,213 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:40" (1/1) ... [2019-05-23 11:26:40,213 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:40" (1/1) ... [2019-05-23 11:26:40,215 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:40" (1/1) ... [2019-05-23 11:26:40,215 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:40" (1/1) ... [2019-05-23 11:26:40,221 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:40" (1/1) ... [2019-05-23 11:26:40,316 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:40" (1/1) ... [2019-05-23 11:26:40,320 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:40" (1/1) ... [2019-05-23 11:26:40,325 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:26:40,325 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:26:40,325 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:26:40,325 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:26:40,326 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:40" (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 11:26:40,379 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:26:40,379 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:26:40,379 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:26:40,380 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:26:40,380 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:26:40,380 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:26:40,820 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:26:40,820 INFO L146 ILogger]: Removed 8 assume(true) statements. [2019-05-23 11:26:40,822 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:26:40 BoogieIcfgContainer [2019-05-23 11:26:40,822 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:26:40,823 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:26:40,823 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:26:40,826 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:26:40,826 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:26:39" (1/3) ... [2019-05-23 11:26:40,827 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b9d7ba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:26:40, skipping insertion in model container [2019-05-23 11:26:40,827 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:40" (2/3) ... [2019-05-23 11:26:40,828 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b9d7ba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:26:40, skipping insertion in model container [2019-05-23 11:26:40,828 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:26:40" (3/3) ... [2019-05-23 11:26:40,830 INFO L146 ILogger]: Analyzing ICFG skipped_true-unreach-call.i [2019-05-23 11:26:40,839 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:26:40,849 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:26:40,865 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:26:40,897 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:26:40,897 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:26:40,898 INFO L146 ILogger]: Hoare is true [2019-05-23 11:26:40,898 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:26:40,898 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:26:40,898 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:26:40,898 INFO L146 ILogger]: Difference is false [2019-05-23 11:26:40,898 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:26:40,899 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:26:40,912 INFO L146 ILogger]: Start isEmpty. Operand 50 states. [2019-05-23 11:26:40,919 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 24 [2019-05-23 11:26:40,919 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:40,920 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] [2019-05-23 11:26:40,922 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:40,926 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:40,926 INFO L146 ILogger]: Analyzing trace with hash 470567764, now seen corresponding path program 1 times [2019-05-23 11:26:40,928 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:40,928 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:40,969 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:40,970 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:40,970 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:41,017 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:41,064 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 11:26:41,066 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:26:41,067 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:26:41,070 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:26:41,080 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:26:41,081 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:26:41,083 INFO L146 ILogger]: Start difference. First operand 50 states. Second operand 2 states. [2019-05-23 11:26:41,101 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:41,102 INFO L146 ILogger]: Finished difference Result 69 states and 79 transitions. [2019-05-23 11:26:41,102 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:26:41,103 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 23 [2019-05-23 11:26:41,104 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:41,114 INFO L146 ILogger]: With dead ends: 69 [2019-05-23 11:26:41,114 INFO L146 ILogger]: Without dead ends: 41 [2019-05-23 11:26:41,118 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 11:26:41,134 INFO L146 ILogger]: Start minimizeSevpa. Operand 41 states. [2019-05-23 11:26:41,150 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 41 to 41. [2019-05-23 11:26:41,151 INFO L146 ILogger]: Start removeUnreachable. Operand 41 states. [2019-05-23 11:26:41,153 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2019-05-23 11:26:41,154 INFO L146 ILogger]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 23 [2019-05-23 11:26:41,154 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:41,154 INFO L146 ILogger]: Abstraction has 41 states and 44 transitions. [2019-05-23 11:26:41,155 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:26:41,155 INFO L146 ILogger]: Start isEmpty. Operand 41 states and 44 transitions. [2019-05-23 11:26:41,156 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 24 [2019-05-23 11:26:41,156 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:41,156 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] [2019-05-23 11:26:41,157 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:41,157 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:41,157 INFO L146 ILogger]: Analyzing trace with hash 2027198009, now seen corresponding path program 1 times [2019-05-23 11:26:41,157 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:41,157 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:41,158 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:41,159 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:41,159 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:41,199 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:41,480 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 11:26:41,481 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:26:41,481 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:26:41,483 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:26:41,483 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:26:41,484 INFO L146 ILogger]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:26:41,484 INFO L146 ILogger]: Start difference. First operand 41 states and 44 transitions. Second operand 4 states. [2019-05-23 11:26:41,777 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:41,777 INFO L146 ILogger]: Finished difference Result 67 states and 73 transitions. [2019-05-23 11:26:41,778 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:26:41,778 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 23 [2019-05-23 11:26:41,779 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:41,780 INFO L146 ILogger]: With dead ends: 67 [2019-05-23 11:26:41,780 INFO L146 ILogger]: Without dead ends: 54 [2019-05-23 11:26:41,781 INFO L146 ILogger]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:26:41,782 INFO L146 ILogger]: Start minimizeSevpa. Operand 54 states. [2019-05-23 11:26:41,792 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 54 to 42. [2019-05-23 11:26:41,792 INFO L146 ILogger]: Start removeUnreachable. Operand 42 states. [2019-05-23 11:26:41,793 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2019-05-23 11:26:41,793 INFO L146 ILogger]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 23 [2019-05-23 11:26:41,794 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:41,794 INFO L146 ILogger]: Abstraction has 42 states and 45 transitions. [2019-05-23 11:26:41,794 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:26:41,794 INFO L146 ILogger]: Start isEmpty. Operand 42 states and 45 transitions. [2019-05-23 11:26:41,796 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 34 [2019-05-23 11:26:41,796 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:41,797 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] [2019-05-23 11:26:41,797 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:41,798 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:41,798 INFO L146 ILogger]: Analyzing trace with hash 544350861, now seen corresponding path program 1 times [2019-05-23 11:26:41,798 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:41,798 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:41,800 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:41,801 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:41,801 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:41,867 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:42,417 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 11:26:42,417 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:42,417 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 11:26:42,435 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:42,470 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:42,472 INFO L146 ILogger]: Trace formula consists of 59 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:26:42,479 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:42,672 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2019-05-23 11:26:42,673 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:42,687 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:42,688 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:42,688 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:7 [2019-05-23 11:26:42,773 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 11:26:42,795 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:42,795 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 14 [2019-05-23 11:26:42,796 INFO L146 ILogger]: Interpolant automaton has 14 states [2019-05-23 11:26:42,796 INFO L146 ILogger]: Constructing interpolant automaton starting with 14 interpolants. [2019-05-23 11:26:42,797 INFO L146 ILogger]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:26:42,797 INFO L146 ILogger]: Start difference. First operand 42 states and 45 transitions. Second operand 14 states. [2019-05-23 11:26:43,624 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:43,624 INFO L146 ILogger]: Finished difference Result 70 states and 75 transitions. [2019-05-23 11:26:43,626 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-05-23 11:26:43,626 INFO L146 ILogger]: Start accepts. Automaton has 14 states. Word has length 33 [2019-05-23 11:26:43,626 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:43,627 INFO L146 ILogger]: With dead ends: 70 [2019-05-23 11:26:43,628 INFO L146 ILogger]: Without dead ends: 68 [2019-05-23 11:26:43,629 INFO L146 ILogger]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:26:43,629 INFO L146 ILogger]: Start minimizeSevpa. Operand 68 states. [2019-05-23 11:26:43,634 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 68 to 48. [2019-05-23 11:26:43,634 INFO L146 ILogger]: Start removeUnreachable. Operand 48 states. [2019-05-23 11:26:43,635 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2019-05-23 11:26:43,636 INFO L146 ILogger]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 33 [2019-05-23 11:26:43,637 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:43,637 INFO L146 ILogger]: Abstraction has 48 states and 51 transitions. [2019-05-23 11:26:43,637 INFO L146 ILogger]: Interpolant automaton has 14 states. [2019-05-23 11:26:43,637 INFO L146 ILogger]: Start isEmpty. Operand 48 states and 51 transitions. [2019-05-23 11:26:43,638 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 44 [2019-05-23 11:26:43,638 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:43,638 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:26:43,638 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:43,639 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:43,639 INFO L146 ILogger]: Analyzing trace with hash -1413651072, now seen corresponding path program 1 times [2019-05-23 11:26:43,639 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:43,639 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:43,640 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:43,640 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:43,640 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:43,681 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:44,020 INFO L146 ILogger]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:44,020 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:44,021 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 11:26:44,029 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:44,058 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:44,059 INFO L146 ILogger]: Trace formula consists of 74 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:26:44,062 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:44,419 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:26:44,426 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:44,426 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2019-05-23 11:26:44,427 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:44,438 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:44,439 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:44,439 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:20, output treesize:7 [2019-05-23 11:26:44,591 INFO L146 ILogger]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:44,617 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:44,618 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2019-05-23 11:26:44,618 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:26:44,618 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:26:44,619 INFO L146 ILogger]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:26:44,619 INFO L146 ILogger]: Start difference. First operand 48 states and 51 transitions. Second operand 22 states. [2019-05-23 11:26:45,577 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:45,577 INFO L146 ILogger]: Finished difference Result 80 states and 85 transitions. [2019-05-23 11:26:45,578 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:26:45,578 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 43 [2019-05-23 11:26:45,579 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:45,580 INFO L146 ILogger]: With dead ends: 80 [2019-05-23 11:26:45,580 INFO L146 ILogger]: Without dead ends: 78 [2019-05-23 11:26:45,581 INFO L146 ILogger]: 0 DeclaredPredicates, 68 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=256, Invalid=1004, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:26:45,581 INFO L146 ILogger]: Start minimizeSevpa. Operand 78 states. [2019-05-23 11:26:45,586 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 78 to 58. [2019-05-23 11:26:45,586 INFO L146 ILogger]: Start removeUnreachable. Operand 58 states. [2019-05-23 11:26:45,587 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2019-05-23 11:26:45,588 INFO L146 ILogger]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 43 [2019-05-23 11:26:45,588 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:45,588 INFO L146 ILogger]: Abstraction has 58 states and 61 transitions. [2019-05-23 11:26:45,588 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:26:45,588 INFO L146 ILogger]: Start isEmpty. Operand 58 states and 61 transitions. [2019-05-23 11:26:45,590 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 54 [2019-05-23 11:26:45,590 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:45,590 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 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] [2019-05-23 11:26:45,590 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:45,591 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:45,591 INFO L146 ILogger]: Analyzing trace with hash 544462003, now seen corresponding path program 2 times [2019-05-23 11:26:45,591 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:45,591 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:45,592 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:45,592 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:26:45,592 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:45,608 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:46,167 INFO L146 ILogger]: Checked inductivity of 23 backedges. 12 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:46,167 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:46,167 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 11:26:46,176 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:26:46,193 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:26:46,194 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:46,195 INFO L146 ILogger]: Trace formula consists of 89 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:26:46,198 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:46,697 INFO L146 ILogger]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:46,725 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:46,725 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2019-05-23 11:26:46,725 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:26:46,726 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:26:46,726 INFO L146 ILogger]: CoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:26:46,727 INFO L146 ILogger]: Start difference. First operand 58 states and 61 transitions. Second operand 23 states. [2019-05-23 11:26:47,387 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:47,388 INFO L146 ILogger]: Finished difference Result 118 states and 126 transitions. [2019-05-23 11:26:47,388 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:26:47,388 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 53 [2019-05-23 11:26:47,389 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:47,390 INFO L146 ILogger]: With dead ends: 118 [2019-05-23 11:26:47,390 INFO L146 ILogger]: Without dead ends: 84 [2019-05-23 11:26:47,392 INFO L146 ILogger]: 0 DeclaredPredicates, 75 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=247, Invalid=809, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:26:47,392 INFO L146 ILogger]: Start minimizeSevpa. Operand 84 states. [2019-05-23 11:26:47,397 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 84 to 72. [2019-05-23 11:26:47,397 INFO L146 ILogger]: Start removeUnreachable. Operand 72 states. [2019-05-23 11:26:47,398 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 72 states to 72 states and 77 transitions. [2019-05-23 11:26:47,398 INFO L146 ILogger]: Start accepts. Automaton has 72 states and 77 transitions. Word has length 53 [2019-05-23 11:26:47,399 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:47,399 INFO L146 ILogger]: Abstraction has 72 states and 77 transitions. [2019-05-23 11:26:47,399 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:26:47,399 INFO L146 ILogger]: Start isEmpty. Operand 72 states and 77 transitions. [2019-05-23 11:26:47,400 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 64 [2019-05-23 11:26:47,400 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:47,400 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 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] [2019-05-23 11:26:47,401 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:47,401 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:47,401 INFO L146 ILogger]: Analyzing trace with hash -2127161849, now seen corresponding path program 3 times [2019-05-23 11:26:47,401 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:47,401 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:47,402 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:47,402 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:47,403 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:47,423 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:47,673 INFO L146 ILogger]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:47,673 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:47,673 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 11:26:47,682 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:26:47,705 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:26:47,705 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:47,706 INFO L146 ILogger]: Trace formula consists of 103 conjuncts, 28 conjunts are in the unsatisfiable core [2019-05-23 11:26:47,708 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:48,035 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:26:48,037 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:48,038 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2019-05-23 11:26:48,039 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:48,047 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:48,048 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:48,048 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:20, output treesize:7 [2019-05-23 11:26:48,119 INFO L146 ILogger]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:48,138 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:48,138 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 30 [2019-05-23 11:26:48,138 INFO L146 ILogger]: Interpolant automaton has 30 states [2019-05-23 11:26:48,139 INFO L146 ILogger]: Constructing interpolant automaton starting with 30 interpolants. [2019-05-23 11:26:48,139 INFO L146 ILogger]: CoverageRelationStatistics Valid=103, Invalid=767, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:26:48,140 INFO L146 ILogger]: Start difference. First operand 72 states and 77 transitions. Second operand 30 states. [2019-05-23 11:26:49,350 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:49,351 INFO L146 ILogger]: Finished difference Result 108 states and 115 transitions. [2019-05-23 11:26:49,351 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:26:49,351 INFO L146 ILogger]: Start accepts. Automaton has 30 states. Word has length 63 [2019-05-23 11:26:49,352 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:49,352 INFO L146 ILogger]: With dead ends: 108 [2019-05-23 11:26:49,352 INFO L146 ILogger]: Without dead ends: 106 [2019-05-23 11:26:49,354 INFO L146 ILogger]: 0 DeclaredPredicates, 100 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=366, Invalid=2286, Unknown=0, NotChecked=0, Total=2652 [2019-05-23 11:26:49,354 INFO L146 ILogger]: Start minimizeSevpa. Operand 106 states. [2019-05-23 11:26:49,360 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 106 to 82. [2019-05-23 11:26:49,360 INFO L146 ILogger]: Start removeUnreachable. Operand 82 states. [2019-05-23 11:26:49,361 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 82 states to 82 states and 87 transitions. [2019-05-23 11:26:49,361 INFO L146 ILogger]: Start accepts. Automaton has 82 states and 87 transitions. Word has length 63 [2019-05-23 11:26:49,362 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:49,362 INFO L146 ILogger]: Abstraction has 82 states and 87 transitions. [2019-05-23 11:26:49,362 INFO L146 ILogger]: Interpolant automaton has 30 states. [2019-05-23 11:26:49,362 INFO L146 ILogger]: Start isEmpty. Operand 82 states and 87 transitions. [2019-05-23 11:26:49,363 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 74 [2019-05-23 11:26:49,363 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:49,364 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2019-05-23 11:26:49,364 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:49,364 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:49,364 INFO L146 ILogger]: Analyzing trace with hash 1063962746, now seen corresponding path program 4 times [2019-05-23 11:26:49,365 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:49,365 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:49,365 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:49,366 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:49,366 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:49,387 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:49,957 INFO L146 ILogger]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:49,958 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:49,958 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 11:26:49,967 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:26:50,007 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:26:50,007 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:50,009 INFO L146 ILogger]: Trace formula consists of 116 conjuncts, 32 conjunts are in the unsatisfiable core [2019-05-23 11:26:50,016 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:50,545 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:26:50,546 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:50,547 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2019-05-23 11:26:50,547 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:50,551 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:50,551 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:50,551 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:20, output treesize:7 [2019-05-23 11:26:50,631 INFO L146 ILogger]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:50,650 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:50,650 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2019-05-23 11:26:50,651 INFO L146 ILogger]: Interpolant automaton has 34 states [2019-05-23 11:26:50,651 INFO L146 ILogger]: Constructing interpolant automaton starting with 34 interpolants. [2019-05-23 11:26:50,652 INFO L146 ILogger]: CoverageRelationStatistics Valid=118, Invalid=1004, Unknown=0, NotChecked=0, Total=1122 [2019-05-23 11:26:50,652 INFO L146 ILogger]: Start difference. First operand 82 states and 87 transitions. Second operand 34 states. [2019-05-23 11:26:52,366 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:52,367 INFO L146 ILogger]: Finished difference Result 123 states and 131 transitions. [2019-05-23 11:26:52,367 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-05-23 11:26:52,367 INFO L146 ILogger]: Start accepts. Automaton has 34 states. Word has length 73 [2019-05-23 11:26:52,368 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:52,369 INFO L146 ILogger]: With dead ends: 123 [2019-05-23 11:26:52,369 INFO L146 ILogger]: Without dead ends: 121 [2019-05-23 11:26:52,370 INFO L146 ILogger]: 0 DeclaredPredicates, 118 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 955 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=437, Invalid=3345, Unknown=0, NotChecked=0, Total=3782 [2019-05-23 11:26:52,371 INFO L146 ILogger]: Start minimizeSevpa. Operand 121 states. [2019-05-23 11:26:52,379 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 121 to 92. [2019-05-23 11:26:52,379 INFO L146 ILogger]: Start removeUnreachable. Operand 92 states. [2019-05-23 11:26:52,380 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 92 states to 92 states and 97 transitions. [2019-05-23 11:26:52,381 INFO L146 ILogger]: Start accepts. Automaton has 92 states and 97 transitions. Word has length 73 [2019-05-23 11:26:52,381 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:52,381 INFO L146 ILogger]: Abstraction has 92 states and 97 transitions. [2019-05-23 11:26:52,381 INFO L146 ILogger]: Interpolant automaton has 34 states. [2019-05-23 11:26:52,382 INFO L146 ILogger]: Start isEmpty. Operand 92 states and 97 transitions. [2019-05-23 11:26:52,383 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 84 [2019-05-23 11:26:52,383 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:52,383 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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] [2019-05-23 11:26:52,384 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:52,384 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:52,384 INFO L146 ILogger]: Analyzing trace with hash -1281013971, now seen corresponding path program 5 times [2019-05-23 11:26:52,384 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:52,384 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:52,385 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:52,385 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:52,386 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:52,401 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:52,668 WARN L146 ILogger]: Spent 130.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 8 [2019-05-23 11:26:53,469 INFO L146 ILogger]: Checked inductivity of 96 backedges. 56 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:53,470 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:53,470 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 11:26:53,487 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:26:53,517 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2019-05-23 11:26:53,517 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:53,519 INFO L146 ILogger]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:26:53,522 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:54,142 INFO L146 ILogger]: Checked inductivity of 96 backedges. 84 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:54,161 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:54,162 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2019-05-23 11:26:54,162 INFO L146 ILogger]: Interpolant automaton has 36 states [2019-05-23 11:26:54,163 INFO L146 ILogger]: Constructing interpolant automaton starting with 36 interpolants. [2019-05-23 11:26:54,163 INFO L146 ILogger]: CoverageRelationStatistics Valid=227, Invalid=1033, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:26:54,164 INFO L146 ILogger]: Start difference. First operand 92 states and 97 transitions. Second operand 36 states. [2019-05-23 11:26:55,228 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:55,229 INFO L146 ILogger]: Finished difference Result 172 states and 182 transitions. [2019-05-23 11:26:55,229 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-05-23 11:26:55,229 INFO L146 ILogger]: Start accepts. Automaton has 36 states. Word has length 83 [2019-05-23 11:26:55,230 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:55,231 INFO L146 ILogger]: With dead ends: 172 [2019-05-23 11:26:55,231 INFO L146 ILogger]: Without dead ends: 118 [2019-05-23 11:26:55,233 INFO L146 ILogger]: 0 DeclaredPredicates, 119 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=558, Invalid=2304, Unknown=0, NotChecked=0, Total=2862 [2019-05-23 11:26:55,233 INFO L146 ILogger]: Start minimizeSevpa. Operand 118 states. [2019-05-23 11:26:55,238 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 118 to 106. [2019-05-23 11:26:55,239 INFO L146 ILogger]: Start removeUnreachable. Operand 106 states. [2019-05-23 11:26:55,240 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 106 states to 106 states and 113 transitions. [2019-05-23 11:26:55,240 INFO L146 ILogger]: Start accepts. Automaton has 106 states and 113 transitions. Word has length 83 [2019-05-23 11:26:55,240 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:55,240 INFO L146 ILogger]: Abstraction has 106 states and 113 transitions. [2019-05-23 11:26:55,240 INFO L146 ILogger]: Interpolant automaton has 36 states. [2019-05-23 11:26:55,241 INFO L146 ILogger]: Start isEmpty. Operand 106 states and 113 transitions. [2019-05-23 11:26:55,242 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 94 [2019-05-23 11:26:55,242 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:55,242 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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] [2019-05-23 11:26:55,243 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:55,243 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:55,243 INFO L146 ILogger]: Analyzing trace with hash -870220415, now seen corresponding path program 6 times [2019-05-23 11:26:55,243 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:55,243 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:55,244 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:55,244 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:55,244 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:55,263 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:55,715 INFO L146 ILogger]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:55,715 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:26:55,715 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 11:26:55,724 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:26:55,760 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-05-23 11:26:55,761 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:26:55,762 INFO L146 ILogger]: Trace formula consists of 147 conjuncts, 40 conjunts are in the unsatisfiable core [2019-05-23 11:26:55,765 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:26:56,307 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:26:56,309 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:56,309 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2019-05-23 11:26:56,310 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:26:56,312 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:26:56,313 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:26:56,313 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:20, output treesize:7 [2019-05-23 11:26:56,459 INFO L146 ILogger]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:26:56,478 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:26:56,478 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 42 [2019-05-23 11:26:56,479 INFO L146 ILogger]: Interpolant automaton has 42 states [2019-05-23 11:26:56,479 INFO L146 ILogger]: Constructing interpolant automaton starting with 42 interpolants. [2019-05-23 11:26:56,480 INFO L146 ILogger]: CoverageRelationStatistics Valid=148, Invalid=1574, Unknown=0, NotChecked=0, Total=1722 [2019-05-23 11:26:56,480 INFO L146 ILogger]: Start difference. First operand 106 states and 113 transitions. Second operand 42 states. [2019-05-23 11:26:59,438 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:26:59,439 INFO L146 ILogger]: Finished difference Result 169 states and 181 transitions. [2019-05-23 11:26:59,439 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2019-05-23 11:26:59,439 INFO L146 ILogger]: Start accepts. Automaton has 42 states. Word has length 93 [2019-05-23 11:26:59,440 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:26:59,442 INFO L146 ILogger]: With dead ends: 169 [2019-05-23 11:26:59,442 INFO L146 ILogger]: Without dead ends: 167 [2019-05-23 11:26:59,445 INFO L146 ILogger]: 0 DeclaredPredicates, 156 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1894 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=612, Invalid=6360, Unknown=0, NotChecked=0, Total=6972 [2019-05-23 11:26:59,445 INFO L146 ILogger]: Start minimizeSevpa. Operand 167 states. [2019-05-23 11:26:59,452 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 167 to 116. [2019-05-23 11:26:59,452 INFO L146 ILogger]: Start removeUnreachable. Operand 116 states. [2019-05-23 11:26:59,454 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 116 states to 116 states and 123 transitions. [2019-05-23 11:26:59,454 INFO L146 ILogger]: Start accepts. Automaton has 116 states and 123 transitions. Word has length 93 [2019-05-23 11:26:59,454 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:26:59,454 INFO L146 ILogger]: Abstraction has 116 states and 123 transitions. [2019-05-23 11:26:59,454 INFO L146 ILogger]: Interpolant automaton has 42 states. [2019-05-23 11:26:59,455 INFO L146 ILogger]: Start isEmpty. Operand 116 states and 123 transitions. [2019-05-23 11:26:59,456 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 104 [2019-05-23 11:26:59,456 INFO L146 ILogger]: Found error trace [2019-05-23 11:26:59,456 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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] [2019-05-23 11:26:59,457 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:26:59,457 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:26:59,457 INFO L146 ILogger]: Analyzing trace with hash 427728756, now seen corresponding path program 7 times [2019-05-23 11:26:59,457 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:26:59,457 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:26:59,458 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:59,458 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:26:59,458 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:26:59,475 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:00,597 INFO L146 ILogger]: Checked inductivity of 163 backedges. 0 proven. 163 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:00,598 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:00,598 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:27:00,611 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:27:00,633 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:00,634 INFO L146 ILogger]: Trace formula consists of 162 conjuncts, 44 conjunts are in the unsatisfiable core [2019-05-23 11:27:00,638 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:01,284 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:27:01,286 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:01,286 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2019-05-23 11:27:01,287 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:01,293 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:01,293 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:01,294 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:20, output treesize:7 [2019-05-23 11:27:01,412 INFO L146 ILogger]: Checked inductivity of 163 backedges. 0 proven. 163 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:01,431 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:01,431 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 46 [2019-05-23 11:27:01,431 INFO L146 ILogger]: Interpolant automaton has 46 states [2019-05-23 11:27:01,432 INFO L146 ILogger]: Constructing interpolant automaton starting with 46 interpolants. [2019-05-23 11:27:01,433 INFO L146 ILogger]: CoverageRelationStatistics Valid=164, Invalid=1906, Unknown=0, NotChecked=0, Total=2070 [2019-05-23 11:27:01,433 INFO L146 ILogger]: Start difference. First operand 116 states and 123 transitions. Second operand 46 states. [2019-05-23 11:27:05,439 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:05,439 INFO L146 ILogger]: Finished difference Result 189 states and 203 transitions. [2019-05-23 11:27:05,439 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2019-05-23 11:27:05,440 INFO L146 ILogger]: Start accepts. Automaton has 46 states. Word has length 103 [2019-05-23 11:27:05,440 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:05,441 INFO L146 ILogger]: With dead ends: 189 [2019-05-23 11:27:05,441 INFO L146 ILogger]: Without dead ends: 187 [2019-05-23 11:27:05,446 INFO L146 ILogger]: 0 DeclaredPredicates, 177 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2594 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=749, Invalid=8563, Unknown=0, NotChecked=0, Total=9312 [2019-05-23 11:27:05,447 INFO L146 ILogger]: Start minimizeSevpa. Operand 187 states. [2019-05-23 11:27:05,453 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 187 to 126. [2019-05-23 11:27:05,453 INFO L146 ILogger]: Start removeUnreachable. Operand 126 states. [2019-05-23 11:27:05,455 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 126 states to 126 states and 133 transitions. [2019-05-23 11:27:05,455 INFO L146 ILogger]: Start accepts. Automaton has 126 states and 133 transitions. Word has length 103 [2019-05-23 11:27:05,455 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:05,456 INFO L146 ILogger]: Abstraction has 126 states and 133 transitions. [2019-05-23 11:27:05,456 INFO L146 ILogger]: Interpolant automaton has 46 states. [2019-05-23 11:27:05,456 INFO L146 ILogger]: Start isEmpty. Operand 126 states and 133 transitions. [2019-05-23 11:27:05,457 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 114 [2019-05-23 11:27:05,458 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:05,458 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 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] [2019-05-23 11:27:05,458 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:05,458 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:05,459 INFO L146 ILogger]: Analyzing trace with hash -423875161, now seen corresponding path program 8 times [2019-05-23 11:27:05,459 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:05,459 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:05,460 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:05,460 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:27:05,460 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:05,474 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:06,919 INFO L146 ILogger]: Checked inductivity of 219 backedges. 140 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:06,920 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:06,920 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:27:06,928 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:27:06,952 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:27:06,952 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:06,953 INFO L146 ILogger]: Trace formula consists of 177 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:27:06,955 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:08,329 INFO L146 ILogger]: Checked inductivity of 219 backedges. 186 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:08,348 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:08,348 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2019-05-23 11:27:08,349 INFO L146 ILogger]: Interpolant automaton has 48 states [2019-05-23 11:27:08,349 INFO L146 ILogger]: Constructing interpolant automaton starting with 48 interpolants. [2019-05-23 11:27:08,350 INFO L146 ILogger]: CoverageRelationStatistics Valid=363, Invalid=1893, Unknown=0, NotChecked=0, Total=2256 [2019-05-23 11:27:08,350 INFO L146 ILogger]: Start difference. First operand 126 states and 133 transitions. Second operand 48 states. [2019-05-23 11:27:09,837 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:09,838 INFO L146 ILogger]: Finished difference Result 226 states and 238 transitions. [2019-05-23 11:27:09,838 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-05-23 11:27:09,838 INFO L146 ILogger]: Start accepts. Automaton has 48 states. Word has length 113 [2019-05-23 11:27:09,839 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:09,840 INFO L146 ILogger]: With dead ends: 226 [2019-05-23 11:27:09,840 INFO L146 ILogger]: Without dead ends: 152 [2019-05-23 11:27:09,842 INFO L146 ILogger]: 0 DeclaredPredicates, 159 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1315 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=856, Invalid=3974, Unknown=0, NotChecked=0, Total=4830 [2019-05-23 11:27:09,842 INFO L146 ILogger]: Start minimizeSevpa. Operand 152 states. [2019-05-23 11:27:09,846 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 152 to 140. [2019-05-23 11:27:09,846 INFO L146 ILogger]: Start removeUnreachable. Operand 140 states. [2019-05-23 11:27:09,847 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 140 states to 140 states and 149 transitions. [2019-05-23 11:27:09,847 INFO L146 ILogger]: Start accepts. Automaton has 140 states and 149 transitions. Word has length 113 [2019-05-23 11:27:09,847 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:09,847 INFO L146 ILogger]: Abstraction has 140 states and 149 transitions. [2019-05-23 11:27:09,848 INFO L146 ILogger]: Interpolant automaton has 48 states. [2019-05-23 11:27:09,848 INFO L146 ILogger]: Start isEmpty. Operand 140 states and 149 transitions. [2019-05-23 11:27:09,850 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 124 [2019-05-23 11:27:09,850 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:09,850 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 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] [2019-05-23 11:27:09,850 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:09,850 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:09,851 INFO L146 ILogger]: Analyzing trace with hash -187197189, now seen corresponding path program 9 times [2019-05-23 11:27:09,851 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:09,851 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:09,852 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:09,852 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:09,852 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:09,869 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:10,562 INFO L146 ILogger]: Checked inductivity of 250 backedges. 0 proven. 250 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:10,563 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:10,563 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 11:27:10,572 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:27:10,609 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2019-05-23 11:27:10,610 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:10,611 INFO L146 ILogger]: Trace formula consists of 191 conjuncts, 52 conjunts are in the unsatisfiable core [2019-05-23 11:27:10,613 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:11,553 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:27:11,556 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:11,556 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2019-05-23 11:27:11,556 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:11,559 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:11,559 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:11,559 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:20, output treesize:7 [2019-05-23 11:27:11,702 INFO L146 ILogger]: Checked inductivity of 250 backedges. 0 proven. 250 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:11,720 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:11,721 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 54 [2019-05-23 11:27:11,721 INFO L146 ILogger]: Interpolant automaton has 54 states [2019-05-23 11:27:11,721 INFO L146 ILogger]: Constructing interpolant automaton starting with 54 interpolants. [2019-05-23 11:27:11,722 INFO L146 ILogger]: CoverageRelationStatistics Valid=194, Invalid=2668, Unknown=0, NotChecked=0, Total=2862 [2019-05-23 11:27:11,722 INFO L146 ILogger]: Start difference. First operand 140 states and 149 transitions. Second operand 54 states. [2019-05-23 11:27:17,928 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:17,929 INFO L146 ILogger]: Finished difference Result 271 states and 293 transitions. [2019-05-23 11:27:17,929 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2019-05-23 11:27:17,929 INFO L146 ILogger]: Start accepts. Automaton has 54 states. Word has length 123 [2019-05-23 11:27:17,930 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:17,931 INFO L146 ILogger]: With dead ends: 271 [2019-05-23 11:27:17,931 INFO L146 ILogger]: Without dead ends: 269 [2019-05-23 11:27:17,936 INFO L146 ILogger]: 0 DeclaredPredicates, 227 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5158 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1088, Invalid=15942, Unknown=0, NotChecked=0, Total=17030 [2019-05-23 11:27:17,937 INFO L146 ILogger]: Start minimizeSevpa. Operand 269 states. [2019-05-23 11:27:17,941 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 269 to 150. [2019-05-23 11:27:17,942 INFO L146 ILogger]: Start removeUnreachable. Operand 150 states. [2019-05-23 11:27:17,942 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 150 states to 150 states and 159 transitions. [2019-05-23 11:27:17,943 INFO L146 ILogger]: Start accepts. Automaton has 150 states and 159 transitions. Word has length 123 [2019-05-23 11:27:17,943 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:17,943 INFO L146 ILogger]: Abstraction has 150 states and 159 transitions. [2019-05-23 11:27:17,943 INFO L146 ILogger]: Interpolant automaton has 54 states. [2019-05-23 11:27:17,943 INFO L146 ILogger]: Start isEmpty. Operand 150 states and 159 transitions. [2019-05-23 11:27:17,945 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 134 [2019-05-23 11:27:17,945 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:17,945 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 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] [2019-05-23 11:27:17,945 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:17,945 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:17,946 INFO L146 ILogger]: Analyzing trace with hash 1787570798, now seen corresponding path program 10 times [2019-05-23 11:27:17,946 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:17,946 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:17,947 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:17,947 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:17,947 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:17,964 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:18,654 INFO L146 ILogger]: Checked inductivity of 316 backedges. 0 proven. 316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:18,654 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:18,654 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 11:27:18,662 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:27:18,697 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:27:18,697 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:18,698 INFO L146 ILogger]: Trace formula consists of 204 conjuncts, 56 conjunts are in the unsatisfiable core [2019-05-23 11:27:18,700 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:19,697 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:27:19,699 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:19,700 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2019-05-23 11:27:19,700 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:19,703 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:19,703 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:19,703 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:20, output treesize:7 [2019-05-23 11:27:19,862 INFO L146 ILogger]: Checked inductivity of 316 backedges. 0 proven. 316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:19,880 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:19,880 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 58 [2019-05-23 11:27:19,881 INFO L146 ILogger]: Interpolant automaton has 58 states [2019-05-23 11:27:19,881 INFO L146 ILogger]: Constructing interpolant automaton starting with 58 interpolants. [2019-05-23 11:27:19,882 INFO L146 ILogger]: CoverageRelationStatistics Valid=210, Invalid=3096, Unknown=0, NotChecked=0, Total=3306 [2019-05-23 11:27:19,882 INFO L146 ILogger]: Start difference. First operand 150 states and 159 transitions. Second operand 58 states. [2019-05-23 11:27:23,992 WARN L146 ILogger]: Spent 161.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2019-05-23 11:27:27,900 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:27,900 INFO L146 ILogger]: Finished difference Result 301 states and 327 transitions. [2019-05-23 11:27:27,900 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2019-05-23 11:27:27,900 INFO L146 ILogger]: Start accepts. Automaton has 58 states. Word has length 133 [2019-05-23 11:27:27,901 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:27,903 INFO L146 ILogger]: With dead ends: 301 [2019-05-23 11:27:27,903 INFO L146 ILogger]: Without dead ends: 299 [2019-05-23 11:27:27,905 INFO L146 ILogger]: 0 DeclaredPredicates, 254 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6925 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1364, Invalid=20986, Unknown=0, NotChecked=0, Total=22350 [2019-05-23 11:27:27,906 INFO L146 ILogger]: Start minimizeSevpa. Operand 299 states. [2019-05-23 11:27:27,911 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 299 to 160. [2019-05-23 11:27:27,912 INFO L146 ILogger]: Start removeUnreachable. Operand 160 states. [2019-05-23 11:27:27,912 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 160 states to 160 states and 169 transitions. [2019-05-23 11:27:27,913 INFO L146 ILogger]: Start accepts. Automaton has 160 states and 169 transitions. Word has length 133 [2019-05-23 11:27:27,913 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:27,913 INFO L146 ILogger]: Abstraction has 160 states and 169 transitions. [2019-05-23 11:27:27,913 INFO L146 ILogger]: Interpolant automaton has 58 states. [2019-05-23 11:27:27,913 INFO L146 ILogger]: Start isEmpty. Operand 160 states and 169 transitions. [2019-05-23 11:27:27,914 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 144 [2019-05-23 11:27:27,915 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:27,915 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 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] [2019-05-23 11:27:27,915 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:27,915 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:27,916 INFO L146 ILogger]: Analyzing trace with hash -1153710047, now seen corresponding path program 11 times [2019-05-23 11:27:27,916 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:27,916 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:27,917 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:27,917 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:27,917 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:27,931 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:29,576 INFO L146 ILogger]: Checked inductivity of 392 backedges. 264 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:29,577 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:29,577 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 11:27:29,586 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:27:29,631 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2019-05-23 11:27:29,631 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:29,632 INFO L146 ILogger]: Trace formula consists of 221 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:27:29,635 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:31,091 INFO L146 ILogger]: Checked inductivity of 392 backedges. 328 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:31,111 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:31,111 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 60 [2019-05-23 11:27:31,112 INFO L146 ILogger]: Interpolant automaton has 60 states [2019-05-23 11:27:31,112 INFO L146 ILogger]: Constructing interpolant automaton starting with 60 interpolants. [2019-05-23 11:27:31,113 INFO L146 ILogger]: CoverageRelationStatistics Valid=529, Invalid=3011, Unknown=0, NotChecked=0, Total=3540 [2019-05-23 11:27:31,113 INFO L146 ILogger]: Start difference. First operand 160 states and 169 transitions. Second operand 60 states. [2019-05-23 11:27:32,774 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:27:32,775 INFO L146 ILogger]: Finished difference Result 280 states and 294 transitions. [2019-05-23 11:27:32,775 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-05-23 11:27:32,775 INFO L146 ILogger]: Start accepts. Automaton has 60 states. Word has length 143 [2019-05-23 11:27:32,775 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:27:32,776 INFO L146 ILogger]: With dead ends: 280 [2019-05-23 11:27:32,776 INFO L146 ILogger]: Without dead ends: 186 [2019-05-23 11:27:32,778 INFO L146 ILogger]: 0 DeclaredPredicates, 201 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2251 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1284, Invalid=6372, Unknown=0, NotChecked=0, Total=7656 [2019-05-23 11:27:32,778 INFO L146 ILogger]: Start minimizeSevpa. Operand 186 states. [2019-05-23 11:27:32,783 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 186 to 174. [2019-05-23 11:27:32,783 INFO L146 ILogger]: Start removeUnreachable. Operand 174 states. [2019-05-23 11:27:32,784 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 174 states to 174 states and 185 transitions. [2019-05-23 11:27:32,784 INFO L146 ILogger]: Start accepts. Automaton has 174 states and 185 transitions. Word has length 143 [2019-05-23 11:27:32,784 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:27:32,784 INFO L146 ILogger]: Abstraction has 174 states and 185 transitions. [2019-05-23 11:27:32,784 INFO L146 ILogger]: Interpolant automaton has 60 states. [2019-05-23 11:27:32,785 INFO L146 ILogger]: Start isEmpty. Operand 174 states and 185 transitions. [2019-05-23 11:27:32,786 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 154 [2019-05-23 11:27:32,786 INFO L146 ILogger]: Found error trace [2019-05-23 11:27:32,786 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 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] [2019-05-23 11:27:32,787 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:27:32,787 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:27:32,787 INFO L146 ILogger]: Analyzing trace with hash -1876187019, now seen corresponding path program 12 times [2019-05-23 11:27:32,787 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:27:32,787 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:27:32,788 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:32,788 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:27:32,788 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:27:32,811 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:33,559 INFO L146 ILogger]: Checked inductivity of 433 backedges. 0 proven. 433 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:33,560 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:27:33,560 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:27:33,569 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:27:33,617 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2019-05-23 11:27:33,618 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:27:33,620 INFO L146 ILogger]: Trace formula consists of 235 conjuncts, 64 conjunts are in the unsatisfiable core [2019-05-23 11:27:33,623 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:27:34,941 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:27:34,943 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:34,943 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2019-05-23 11:27:34,944 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:27:34,947 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:27:34,947 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:27:34,947 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:20, output treesize:7 [2019-05-23 11:27:35,117 INFO L146 ILogger]: Checked inductivity of 433 backedges. 0 proven. 433 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:27:35,137 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:27:35,137 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2019-05-23 11:27:35,137 INFO L146 ILogger]: Interpolant automaton has 66 states [2019-05-23 11:27:35,138 INFO L146 ILogger]: Constructing interpolant automaton starting with 66 interpolants. [2019-05-23 11:27:35,139 INFO L146 ILogger]: CoverageRelationStatistics Valid=240, Invalid=4050, Unknown=0, NotChecked=0, Total=4290 [2019-05-23 11:27:35,139 INFO L146 ILogger]: Start difference. First operand 174 states and 185 transitions. Second operand 66 states.