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-crafted/zero_sum_m5_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:30:33,911 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:30:33,913 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:30:33,925 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:30:33,926 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:30:33,927 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:30:33,928 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:30:33,930 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:30:33,932 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:30:33,933 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:30:33,934 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:30:33,934 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:30:33,935 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:30:33,936 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:30:33,937 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:30:33,938 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:30:33,939 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:30:33,941 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:30:33,943 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:30:33,944 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:30:33,945 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:30:33,947 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:30:33,949 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:30:33,950 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:30:33,950 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:30:33,951 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:30:33,951 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:30:33,952 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:30:33,953 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:30:33,954 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:30:33,954 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:30:33,955 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:30:33,956 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:30:33,957 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:30:33,957 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:30:33,957 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:30:33,958 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:30:33,959 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:30:33,959 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:30:33,960 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:30:33,975 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:30:33,975 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:30:33,976 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:30:33,976 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:30:33,977 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:30:33,977 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:30:33,977 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:30:33,977 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:30:33,977 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:30:33,978 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:30:33,978 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:30:33,978 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:30:33,978 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:30:33,978 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:30:33,979 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:30:33,979 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:30:33,979 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:30:33,979 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:30:33,979 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:30:33,980 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:30:33,980 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:30:33,980 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:30:33,980 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:30:33,980 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:30:33,981 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:30:33,981 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:30:33,981 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:30:33,981 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:30:33,981 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 11:30:34,012 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:30:34,031 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:30:34,034 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:30:34,035 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:30:34,036 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:30:34,037 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-crafted/zero_sum_m5_true-unreach-call.c [2019-05-23 11:30:34,091 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32c03bc49/bdb6d3a0f6fe4fe99e1b3e132b48bda3/FLAGb7bb2ceaa [2019-05-23 11:30:34,507 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:30:34,508 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-crafted/zero_sum_m5_true-unreach-call.c [2019-05-23 11:30:34,514 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32c03bc49/bdb6d3a0f6fe4fe99e1b3e132b48bda3/FLAGb7bb2ceaa [2019-05-23 11:30:34,880 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32c03bc49/bdb6d3a0f6fe4fe99e1b3e132b48bda3 [2019-05-23 11:30:34,889 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:30:34,891 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:30:34,892 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:30:34,892 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:30:34,896 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:30:34,897 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:30:34" (1/1) ... [2019-05-23 11:30:34,899 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@347f735 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:34, skipping insertion in model container [2019-05-23 11:30:34,900 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:30:34" (1/1) ... [2019-05-23 11:30:34,907 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:30:34,925 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:30:35,100 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:30:35,105 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:30:35,146 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:30:35,175 INFO L146 ILogger]: Completed translation [2019-05-23 11:30:35,175 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:35 WrapperNode [2019-05-23 11:30:35,175 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:30:35,176 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:30:35,177 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:30:35,177 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:30:35,187 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:35" (1/1) ... [2019-05-23 11:30:35,203 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:35" (1/1) ... [2019-05-23 11:30:35,240 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:30:35,242 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:30:35,242 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:30:35,242 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:30:35,254 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:35" (1/1) ... [2019-05-23 11:30:35,254 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:35" (1/1) ... [2019-05-23 11:30:35,259 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:35" (1/1) ... [2019-05-23 11:30:35,264 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:35" (1/1) ... [2019-05-23 11:30:35,276 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:35" (1/1) ... [2019-05-23 11:30:35,364 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:35" (1/1) ... [2019-05-23 11:30:35,366 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:35" (1/1) ... [2019-05-23 11:30:35,369 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:30:35,369 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:30:35,370 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:30:35,370 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:30:35,371 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:35" (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 11:30:35,428 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:30:35,429 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:30:35,429 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:30:35,429 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:30:35,429 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:30:36,047 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:30:36,047 INFO L146 ILogger]: Removed 16 assume(true) statements. [2019-05-23 11:30:36,048 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:30:36 BoogieIcfgContainer [2019-05-23 11:30:36,049 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:30:36,050 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:30:36,050 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:30:36,053 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:30:36,053 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:30:34" (1/3) ... [2019-05-23 11:30:36,054 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63762201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:30:36, skipping insertion in model container [2019-05-23 11:30:36,054 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:35" (2/3) ... [2019-05-23 11:30:36,055 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63762201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:30:36, skipping insertion in model container [2019-05-23 11:30:36,055 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:30:36" (3/3) ... [2019-05-23 11:30:36,056 INFO L146 ILogger]: Analyzing ICFG zero_sum_m5_true-unreach-call.c [2019-05-23 11:30:36,065 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:30:36,073 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:30:36,089 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:30:36,116 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:30:36,116 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:30:36,116 INFO L146 ILogger]: Hoare is true [2019-05-23 11:30:36,116 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:30:36,117 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:30:36,117 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:30:36,117 INFO L146 ILogger]: Difference is false [2019-05-23 11:30:36,117 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:30:36,117 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:30:36,135 INFO L146 ILogger]: Start isEmpty. Operand 104 states. [2019-05-23 11:30:36,144 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 38 [2019-05-23 11:30:36,144 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:36,145 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:36,147 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:36,153 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:36,153 INFO L146 ILogger]: Analyzing trace with hash 1229589119, now seen corresponding path program 1 times [2019-05-23 11:30:36,155 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:36,156 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:36,199 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:36,199 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:36,199 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:36,236 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:36,291 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 11:30:36,293 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:30:36,293 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:30:36,296 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:30:36,306 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:30:36,307 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:30:36,309 INFO L146 ILogger]: Start difference. First operand 104 states. Second operand 2 states. [2019-05-23 11:30:36,332 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:36,332 INFO L146 ILogger]: Finished difference Result 188 states and 227 transitions. [2019-05-23 11:30:36,332 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:30:36,334 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 37 [2019-05-23 11:30:36,334 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:36,344 INFO L146 ILogger]: With dead ends: 188 [2019-05-23 11:30:36,345 INFO L146 ILogger]: Without dead ends: 98 [2019-05-23 11:30:36,348 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 11:30:36,367 INFO L146 ILogger]: Start minimizeSevpa. Operand 98 states. [2019-05-23 11:30:36,386 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 98 to 98. [2019-05-23 11:30:36,388 INFO L146 ILogger]: Start removeUnreachable. Operand 98 states. [2019-05-23 11:30:36,390 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 98 states to 98 states and 107 transitions. [2019-05-23 11:30:36,391 INFO L146 ILogger]: Start accepts. Automaton has 98 states and 107 transitions. Word has length 37 [2019-05-23 11:30:36,392 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:36,392 INFO L146 ILogger]: Abstraction has 98 states and 107 transitions. [2019-05-23 11:30:36,392 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:30:36,392 INFO L146 ILogger]: Start isEmpty. Operand 98 states and 107 transitions. [2019-05-23 11:30:36,394 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 38 [2019-05-23 11:30:36,395 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:36,395 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:36,395 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:36,396 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:36,396 INFO L146 ILogger]: Analyzing trace with hash -53866580, now seen corresponding path program 1 times [2019-05-23 11:30:36,396 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:36,396 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:36,397 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:36,398 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:36,398 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:36,424 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:36,662 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 11:30:36,663 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:30:36,663 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-05-23 11:30:36,665 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:30:36,666 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:30:36,666 INFO L146 ILogger]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:30:36,666 INFO L146 ILogger]: Start difference. First operand 98 states and 107 transitions. Second operand 5 states. [2019-05-23 11:30:36,918 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:36,918 INFO L146 ILogger]: Finished difference Result 143 states and 161 transitions. [2019-05-23 11:30:36,918 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:30:36,919 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 37 [2019-05-23 11:30:36,919 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:36,921 INFO L146 ILogger]: With dead ends: 143 [2019-05-23 11:30:36,921 INFO L146 ILogger]: Without dead ends: 137 [2019-05-23 11:30:36,923 INFO L146 ILogger]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:30:36,923 INFO L146 ILogger]: Start minimizeSevpa. Operand 137 states. [2019-05-23 11:30:36,933 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 137 to 117. [2019-05-23 11:30:36,933 INFO L146 ILogger]: Start removeUnreachable. Operand 117 states. [2019-05-23 11:30:36,936 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 117 states to 117 states and 135 transitions. [2019-05-23 11:30:36,936 INFO L146 ILogger]: Start accepts. Automaton has 117 states and 135 transitions. Word has length 37 [2019-05-23 11:30:36,936 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:36,937 INFO L146 ILogger]: Abstraction has 117 states and 135 transitions. [2019-05-23 11:30:36,937 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:30:36,937 INFO L146 ILogger]: Start isEmpty. Operand 117 states and 135 transitions. [2019-05-23 11:30:36,939 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 45 [2019-05-23 11:30:36,939 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:36,939 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:36,939 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:36,939 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:36,940 INFO L146 ILogger]: Analyzing trace with hash 1447034660, now seen corresponding path program 1 times [2019-05-23 11:30:36,940 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:36,940 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:36,941 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:36,941 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:36,941 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:36,970 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:37,068 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 11:30:37,069 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:37,069 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 11:30:37,084 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:37,116 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:37,118 INFO L146 ILogger]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:30:37,125 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:37,213 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:30:37,239 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:30:37,240 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2019-05-23 11:30:37,240 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:30:37,241 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:30:37,241 INFO L146 ILogger]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:30:37,241 INFO L146 ILogger]: Start difference. First operand 117 states and 135 transitions. Second operand 7 states. [2019-05-23 11:30:38,229 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:38,230 INFO L146 ILogger]: Finished difference Result 255 states and 291 transitions. [2019-05-23 11:30:38,231 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:30:38,231 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 44 [2019-05-23 11:30:38,231 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:38,233 INFO L146 ILogger]: With dead ends: 255 [2019-05-23 11:30:38,233 INFO L146 ILogger]: Without dead ends: 160 [2019-05-23 11:30:38,234 INFO L146 ILogger]: 0 DeclaredPredicates, 52 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:30:38,235 INFO L146 ILogger]: Start minimizeSevpa. Operand 160 states. [2019-05-23 11:30:38,245 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 160 to 115. [2019-05-23 11:30:38,245 INFO L146 ILogger]: Start removeUnreachable. Operand 115 states. [2019-05-23 11:30:38,246 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 115 states to 115 states and 124 transitions. [2019-05-23 11:30:38,246 INFO L146 ILogger]: Start accepts. Automaton has 115 states and 124 transitions. Word has length 44 [2019-05-23 11:30:38,246 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:38,247 INFO L146 ILogger]: Abstraction has 115 states and 124 transitions. [2019-05-23 11:30:38,247 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:30:38,247 INFO L146 ILogger]: Start isEmpty. Operand 115 states and 124 transitions. [2019-05-23 11:30:38,250 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 115 [2019-05-23 11:30:38,251 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:38,251 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:38,251 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:38,251 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:38,252 INFO L146 ILogger]: Analyzing trace with hash 44606013, now seen corresponding path program 1 times [2019-05-23 11:30:38,252 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:38,252 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:38,253 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:38,253 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:38,253 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:38,282 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:38,416 INFO L146 ILogger]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-05-23 11:30:38,417 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:38,417 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:30:38,432 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:38,472 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:38,473 INFO L146 ILogger]: Trace formula consists of 187 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:30:38,478 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:38,624 INFO L146 ILogger]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-05-23 11:30:38,643 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:38,643 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:30:38,643 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:30:38,644 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:30:38,645 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:30:38,645 INFO L146 ILogger]: Start difference. First operand 115 states and 124 transitions. Second operand 9 states. [2019-05-23 11:30:39,370 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:39,371 INFO L146 ILogger]: Finished difference Result 261 states and 279 transitions. [2019-05-23 11:30:39,371 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:30:39,372 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 114 [2019-05-23 11:30:39,372 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:39,374 INFO L146 ILogger]: With dead ends: 261 [2019-05-23 11:30:39,374 INFO L146 ILogger]: Without dead ends: 167 [2019-05-23 11:30:39,376 INFO L146 ILogger]: 0 DeclaredPredicates, 122 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:30:39,377 INFO L146 ILogger]: Start minimizeSevpa. Operand 167 states. [2019-05-23 11:30:39,385 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 167 to 122. [2019-05-23 11:30:39,385 INFO L146 ILogger]: Start removeUnreachable. Operand 122 states. [2019-05-23 11:30:39,386 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 122 states to 122 states and 131 transitions. [2019-05-23 11:30:39,387 INFO L146 ILogger]: Start accepts. Automaton has 122 states and 131 transitions. Word has length 114 [2019-05-23 11:30:39,387 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:39,387 INFO L146 ILogger]: Abstraction has 122 states and 131 transitions. [2019-05-23 11:30:39,387 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:30:39,387 INFO L146 ILogger]: Start isEmpty. Operand 122 states and 131 transitions. [2019-05-23 11:30:39,391 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 122 [2019-05-23 11:30:39,392 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:39,392 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:39,392 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:39,393 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:39,393 INFO L146 ILogger]: Analyzing trace with hash -1696096880, now seen corresponding path program 2 times [2019-05-23 11:30:39,393 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:39,393 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:39,394 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:39,394 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:39,395 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:39,423 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:39,560 INFO L146 ILogger]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-05-23 11:30:39,560 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:39,561 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 11:30:39,571 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:30:39,619 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:30:39,620 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:39,620 INFO L146 ILogger]: Trace formula consists of 198 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:30:39,626 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:39,714 INFO L146 ILogger]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-05-23 11:30:39,731 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:39,732 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:30:39,732 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:30:39,733 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:30:39,733 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:30:39,734 INFO L146 ILogger]: Start difference. First operand 122 states and 131 transitions. Second operand 9 states. [2019-05-23 11:30:40,118 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:40,118 INFO L146 ILogger]: Finished difference Result 254 states and 271 transitions. [2019-05-23 11:30:40,119 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:30:40,119 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 121 [2019-05-23 11:30:40,119 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:40,121 INFO L146 ILogger]: With dead ends: 254 [2019-05-23 11:30:40,121 INFO L146 ILogger]: Without dead ends: 169 [2019-05-23 11:30:40,122 INFO L146 ILogger]: 0 DeclaredPredicates, 129 GetRequests, 118 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:30:40,123 INFO L146 ILogger]: Start minimizeSevpa. Operand 169 states. [2019-05-23 11:30:40,130 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 169 to 129. [2019-05-23 11:30:40,130 INFO L146 ILogger]: Start removeUnreachable. Operand 129 states. [2019-05-23 11:30:40,131 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 129 states to 129 states and 138 transitions. [2019-05-23 11:30:40,131 INFO L146 ILogger]: Start accepts. Automaton has 129 states and 138 transitions. Word has length 121 [2019-05-23 11:30:40,131 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:40,132 INFO L146 ILogger]: Abstraction has 129 states and 138 transitions. [2019-05-23 11:30:40,132 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:30:40,132 INFO L146 ILogger]: Start isEmpty. Operand 129 states and 138 transitions. [2019-05-23 11:30:40,134 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 129 [2019-05-23 11:30:40,134 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:40,134 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:30:40,134 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:40,135 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:40,135 INFO L146 ILogger]: Analyzing trace with hash 744381718, now seen corresponding path program 3 times [2019-05-23 11:30:40,135 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:40,135 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:40,136 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:40,136 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:40,136 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:40,158 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:40,547 INFO L146 ILogger]: Checked inductivity of 34 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-05-23 11:30:40,547 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:40,547 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 11:30:40,558 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:30:40,613 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:30:40,613 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:40,614 INFO L146 ILogger]: Trace formula consists of 176 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:30:40,619 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:40,791 INFO L146 ILogger]: Checked inductivity of 34 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-05-23 11:30:40,809 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:40,809 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:30:40,810 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:30:40,810 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:30:40,811 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:30:40,811 INFO L146 ILogger]: Start difference. First operand 129 states and 138 transitions. Second operand 9 states. [2019-05-23 11:30:41,197 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:41,197 INFO L146 ILogger]: Finished difference Result 247 states and 263 transitions. [2019-05-23 11:30:41,198 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:30:41,198 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 128 [2019-05-23 11:30:41,199 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:41,200 INFO L146 ILogger]: With dead ends: 247 [2019-05-23 11:30:41,201 INFO L146 ILogger]: Without dead ends: 171 [2019-05-23 11:30:41,202 INFO L146 ILogger]: 0 DeclaredPredicates, 136 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:30:41,202 INFO L146 ILogger]: Start minimizeSevpa. Operand 171 states. [2019-05-23 11:30:41,210 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 171 to 136. [2019-05-23 11:30:41,210 INFO L146 ILogger]: Start removeUnreachable. Operand 136 states. [2019-05-23 11:30:41,211 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 136 states to 136 states and 145 transitions. [2019-05-23 11:30:41,211 INFO L146 ILogger]: Start accepts. Automaton has 136 states and 145 transitions. Word has length 128 [2019-05-23 11:30:41,212 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:41,212 INFO L146 ILogger]: Abstraction has 136 states and 145 transitions. [2019-05-23 11:30:41,212 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:30:41,212 INFO L146 ILogger]: Start isEmpty. Operand 136 states and 145 transitions. [2019-05-23 11:30:41,215 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 136 [2019-05-23 11:30:41,216 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:41,218 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:41,218 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:41,218 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:41,219 INFO L146 ILogger]: Analyzing trace with hash -971171721, now seen corresponding path program 4 times [2019-05-23 11:30:41,219 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:41,219 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:41,220 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:41,220 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:41,220 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:41,240 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:41,365 INFO L146 ILogger]: Checked inductivity of 42 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-05-23 11:30:41,366 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:41,366 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 11:30:41,375 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:30:41,413 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:30:41,414 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:41,414 INFO L146 ILogger]: Trace formula consists of 218 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:30:41,418 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:41,499 INFO L146 ILogger]: Checked inductivity of 42 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-05-23 11:30:41,518 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:41,518 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:30:41,519 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:30:41,519 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:30:41,519 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:30:41,519 INFO L146 ILogger]: Start difference. First operand 136 states and 145 transitions. Second operand 9 states. [2019-05-23 11:30:41,856 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:41,857 INFO L146 ILogger]: Finished difference Result 224 states and 238 transitions. [2019-05-23 11:30:41,857 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:30:41,857 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 135 [2019-05-23 11:30:41,858 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:41,860 INFO L146 ILogger]: With dead ends: 224 [2019-05-23 11:30:41,860 INFO L146 ILogger]: Without dead ends: 173 [2019-05-23 11:30:41,861 INFO L146 ILogger]: 0 DeclaredPredicates, 143 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:30:41,861 INFO L146 ILogger]: Start minimizeSevpa. Operand 173 states. [2019-05-23 11:30:41,865 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 173 to 143. [2019-05-23 11:30:41,865 INFO L146 ILogger]: Start removeUnreachable. Operand 143 states. [2019-05-23 11:30:41,866 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 143 states to 143 states and 152 transitions. [2019-05-23 11:30:41,866 INFO L146 ILogger]: Start accepts. Automaton has 143 states and 152 transitions. Word has length 135 [2019-05-23 11:30:41,867 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:41,867 INFO L146 ILogger]: Abstraction has 143 states and 152 transitions. [2019-05-23 11:30:41,867 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:30:41,867 INFO L146 ILogger]: Start isEmpty. Operand 143 states and 152 transitions. [2019-05-23 11:30:41,868 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 143 [2019-05-23 11:30:41,869 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:41,869 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:41,869 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:41,869 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:41,870 INFO L146 ILogger]: Analyzing trace with hash -467417880, now seen corresponding path program 5 times [2019-05-23 11:30:41,870 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:41,870 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:41,871 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:41,871 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:41,871 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:41,889 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:42,020 INFO L146 ILogger]: Checked inductivity of 50 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2019-05-23 11:30:42,021 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:42,021 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:30:42,029 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:30:42,084 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2019-05-23 11:30:42,084 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:42,085 INFO L146 ILogger]: Trace formula consists of 231 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:30:42,088 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:42,219 INFO L146 ILogger]: Checked inductivity of 50 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2019-05-23 11:30:42,238 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:42,238 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:30:42,239 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:30:42,239 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:30:42,239 INFO L146 ILogger]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:30:42,239 INFO L146 ILogger]: Start difference. First operand 143 states and 152 transitions. Second operand 9 states. [2019-05-23 11:30:42,641 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:42,642 INFO L146 ILogger]: Finished difference Result 224 states and 238 transitions. [2019-05-23 11:30:42,642 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-05-23 11:30:42,642 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 142 [2019-05-23 11:30:42,643 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:42,644 INFO L146 ILogger]: With dead ends: 224 [2019-05-23 11:30:42,644 INFO L146 ILogger]: Without dead ends: 182 [2019-05-23 11:30:42,645 INFO L146 ILogger]: 0 DeclaredPredicates, 152 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:30:42,646 INFO L146 ILogger]: Start minimizeSevpa. Operand 182 states. [2019-05-23 11:30:42,651 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 182 to 157. [2019-05-23 11:30:42,651 INFO L146 ILogger]: Start removeUnreachable. Operand 157 states. [2019-05-23 11:30:42,652 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 157 states to 157 states and 166 transitions. [2019-05-23 11:30:42,652 INFO L146 ILogger]: Start accepts. Automaton has 157 states and 166 transitions. Word has length 142 [2019-05-23 11:30:42,652 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:42,652 INFO L146 ILogger]: Abstraction has 157 states and 166 transitions. [2019-05-23 11:30:42,653 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:30:42,653 INFO L146 ILogger]: Start isEmpty. Operand 157 states and 166 transitions. [2019-05-23 11:30:42,654 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 157 [2019-05-23 11:30:42,655 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:42,655 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:42,655 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:42,655 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:42,656 INFO L146 ILogger]: Analyzing trace with hash -640313368, now seen corresponding path program 6 times [2019-05-23 11:30:42,656 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:42,656 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:42,657 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:42,657 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:42,657 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:42,676 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:42,806 INFO L146 ILogger]: Checked inductivity of 66 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-05-23 11:30:42,806 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:42,806 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 11:30:42,815 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:30:42,859 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2019-05-23 11:30:42,860 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:42,861 INFO L146 ILogger]: Trace formula consists of 253 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:30:42,862 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:42,953 INFO L146 ILogger]: Checked inductivity of 66 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-05-23 11:30:42,973 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:42,973 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:30:42,973 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:30:42,974 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:30:42,974 INFO L146 ILogger]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:30:42,974 INFO L146 ILogger]: Start difference. First operand 157 states and 166 transitions. Second operand 9 states. [2019-05-23 11:30:43,364 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:43,365 INFO L146 ILogger]: Finished difference Result 226 states and 239 transitions. [2019-05-23 11:30:43,365 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-05-23 11:30:43,365 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 156 [2019-05-23 11:30:43,366 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:43,368 INFO L146 ILogger]: With dead ends: 226 [2019-05-23 11:30:43,368 INFO L146 ILogger]: Without dead ends: 186 [2019-05-23 11:30:43,368 INFO L146 ILogger]: 0 DeclaredPredicates, 166 GetRequests, 153 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:30:43,369 INFO L146 ILogger]: Start minimizeSevpa. Operand 186 states. [2019-05-23 11:30:43,373 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 186 to 171. [2019-05-23 11:30:43,373 INFO L146 ILogger]: Start removeUnreachable. Operand 171 states. [2019-05-23 11:30:43,374 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 171 states to 171 states and 180 transitions. [2019-05-23 11:30:43,374 INFO L146 ILogger]: Start accepts. Automaton has 171 states and 180 transitions. Word has length 156 [2019-05-23 11:30:43,374 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:43,374 INFO L146 ILogger]: Abstraction has 171 states and 180 transitions. [2019-05-23 11:30:43,374 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:30:43,375 INFO L146 ILogger]: Start isEmpty. Operand 171 states and 180 transitions. [2019-05-23 11:30:43,376 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 171 [2019-05-23 11:30:43,376 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:43,376 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:43,377 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:43,377 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:43,377 INFO L146 ILogger]: Analyzing trace with hash -1138649816, now seen corresponding path program 7 times [2019-05-23 11:30:43,377 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:43,377 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:43,378 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:43,378 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:43,379 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:43,395 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:43,513 INFO L146 ILogger]: Checked inductivity of 82 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:30:43,514 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:43,514 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 11:30:43,524 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:43,564 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:43,565 INFO L146 ILogger]: Trace formula consists of 275 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:30:43,567 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:43,647 INFO L146 ILogger]: Checked inductivity of 82 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:30:43,666 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:43,666 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:30:43,666 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:30:43,667 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:30:43,667 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:30:43,667 INFO L146 ILogger]: Start difference. First operand 171 states and 180 transitions. Second operand 9 states. [2019-05-23 11:30:44,059 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:44,060 INFO L146 ILogger]: Finished difference Result 221 states and 232 transitions. [2019-05-23 11:30:44,061 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:30:44,061 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 170 [2019-05-23 11:30:44,062 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:44,064 INFO L146 ILogger]: With dead ends: 221 [2019-05-23 11:30:44,064 INFO L146 ILogger]: Without dead ends: 183 [2019-05-23 11:30:44,064 INFO L146 ILogger]: 0 DeclaredPredicates, 178 GetRequests, 167 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:30:44,066 INFO L146 ILogger]: Start minimizeSevpa. Operand 183 states. [2019-05-23 11:30:44,072 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 183 to 178. [2019-05-23 11:30:44,073 INFO L146 ILogger]: Start removeUnreachable. Operand 178 states. [2019-05-23 11:30:44,074 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 178 states to 178 states and 187 transitions. [2019-05-23 11:30:44,074 INFO L146 ILogger]: Start accepts. Automaton has 178 states and 187 transitions. Word has length 170 [2019-05-23 11:30:44,074 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:44,074 INFO L146 ILogger]: Abstraction has 178 states and 187 transitions. [2019-05-23 11:30:44,075 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:30:44,075 INFO L146 ILogger]: Start isEmpty. Operand 178 states and 187 transitions. [2019-05-23 11:30:44,076 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 178 [2019-05-23 11:30:44,076 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:44,077 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:44,077 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:44,077 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:44,077 INFO L146 ILogger]: Analyzing trace with hash -1433990708, now seen corresponding path program 8 times [2019-05-23 11:30:44,078 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:44,078 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:44,078 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:44,079 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:44,079 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:44,149 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:45,372 WARN L146 ILogger]: Spent 152.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 17 [2019-05-23 11:30:45,732 WARN L146 ILogger]: Spent 175.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2019-05-23 11:30:46,022 WARN L146 ILogger]: Spent 166.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 24 [2019-05-23 11:30:55,617 INFO L146 ILogger]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:30:55,617 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:55,617 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 11:30:55,628 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:30:55,672 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:30:55,672 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:55,675 WARN L146 ILogger]: Trace formula consists of 286 conjuncts, 150 conjunts are in the unsatisfiable core [2019-05-23 11:30:55,678 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:02,970 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 22 treesize of output 10 [2019-05-23 11:31:02,971 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:31:02,977 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:31:02,977 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 11:31:02,977 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:7 [2019-05-23 11:31:03,296 INFO L146 ILogger]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:31:03,314 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:31:03,315 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 68] total 135 [2019-05-23 11:31:03,315 INFO L146 ILogger]: Interpolant automaton has 135 states [2019-05-23 11:31:03,316 INFO L146 ILogger]: Constructing interpolant automaton starting with 135 interpolants. [2019-05-23 11:31:03,323 INFO L146 ILogger]: CoverageRelationStatistics Valid=555, Invalid=17535, Unknown=0, NotChecked=0, Total=18090 [2019-05-23 11:31:03,323 INFO L146 ILogger]: Start difference. First operand 178 states and 187 transitions. Second operand 135 states. [2019-05-23 11:31:23,681 WARN L146 ILogger]: Spent 169.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 32 [2019-05-23 11:31:24,684 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:24,684 INFO L146 ILogger]: Finished difference Result 355 states and 373 transitions. [2019-05-23 11:31:24,684 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2019-05-23 11:31:24,685 INFO L146 ILogger]: Start accepts. Automaton has 135 states. Word has length 177 [2019-05-23 11:31:24,685 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:24,688 INFO L146 ILogger]: With dead ends: 355 [2019-05-23 11:31:24,688 INFO L146 ILogger]: Without dead ends: 349 [2019-05-23 11:31:24,699 INFO L146 ILogger]: 0 DeclaredPredicates, 342 GetRequests, 118 SyntacticMatches, 19 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12284 ImplicationChecksByTransitivity, 27.1s TimeCoverageRelationStatistics Valid=1156, Invalid=41486, Unknown=0, NotChecked=0, Total=42642 [2019-05-23 11:31:24,700 INFO L146 ILogger]: Start minimizeSevpa. Operand 349 states. [2019-05-23 11:31:24,709 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 349 to 321. [2019-05-23 11:31:24,709 INFO L146 ILogger]: Start removeUnreachable. Operand 321 states. [2019-05-23 11:31:24,710 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 321 states to 321 states and 339 transitions. [2019-05-23 11:31:24,710 INFO L146 ILogger]: Start accepts. Automaton has 321 states and 339 transitions. Word has length 177 [2019-05-23 11:31:24,711 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:24,711 INFO L146 ILogger]: Abstraction has 321 states and 339 transitions. [2019-05-23 11:31:24,711 INFO L146 ILogger]: Interpolant automaton has 135 states. [2019-05-23 11:31:24,711 INFO L146 ILogger]: Start isEmpty. Operand 321 states and 339 transitions. [2019-05-23 11:31:24,713 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 185 [2019-05-23 11:31:24,713 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:24,713 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:31:24,714 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:24,714 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:24,714 INFO L146 ILogger]: Analyzing trace with hash -300592188, now seen corresponding path program 9 times [2019-05-23 11:31:24,714 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:24,714 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:24,715 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:24,715 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:31:24,716 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:24,731 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:24,914 INFO L146 ILogger]: Checked inductivity of 105 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:31:24,914 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:31:24,914 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 11:31:24,924 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:31:24,973 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:31:24,973 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:24,974 INFO L146 ILogger]: Trace formula consists of 297 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:31:24,977 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:25,138 INFO L146 ILogger]: Checked inductivity of 105 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:31:25,156 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:31:25,157 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2019-05-23 11:31:25,157 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:31:25,157 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:31:25,158 INFO L146 ILogger]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:31:25,158 INFO L146 ILogger]: Start difference. First operand 321 states and 339 transitions. Second operand 24 states. [2019-05-23 11:31:26,798 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:26,799 INFO L146 ILogger]: Finished difference Result 703 states and 742 transitions. [2019-05-23 11:31:26,799 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:31:26,799 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 184 [2019-05-23 11:31:26,800 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:26,804 INFO L146 ILogger]: With dead ends: 703 [2019-05-23 11:31:26,804 INFO L146 ILogger]: Without dead ends: 594 [2019-05-23 11:31:26,805 INFO L146 ILogger]: 0 DeclaredPredicates, 225 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=327, Invalid=2223, Unknown=0, NotChecked=0, Total=2550 [2019-05-23 11:31:26,805 INFO L146 ILogger]: Start minimizeSevpa. Operand 594 states. [2019-05-23 11:31:26,818 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 594 to 423. [2019-05-23 11:31:26,818 INFO L146 ILogger]: Start removeUnreachable. Operand 423 states. [2019-05-23 11:31:26,819 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 423 states to 423 states and 446 transitions. [2019-05-23 11:31:26,820 INFO L146 ILogger]: Start accepts. Automaton has 423 states and 446 transitions. Word has length 184 [2019-05-23 11:31:26,820 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:26,820 INFO L146 ILogger]: Abstraction has 423 states and 446 transitions. [2019-05-23 11:31:26,820 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:31:26,820 INFO L146 ILogger]: Start isEmpty. Operand 423 states and 446 transitions. [2019-05-23 11:31:26,822 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 185 [2019-05-23 11:31:26,822 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:26,822 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:31:26,822 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:26,822 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:26,823 INFO L146 ILogger]: Analyzing trace with hash 1148616986, now seen corresponding path program 10 times [2019-05-23 11:31:26,823 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:26,823 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:26,824 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:26,824 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:31:26,824 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:26,838 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:27,010 INFO L146 ILogger]: Checked inductivity of 105 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:31:27,010 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:31:27,010 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 11:31:27,020 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:31:27,065 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:31:27,066 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:27,066 INFO L146 ILogger]: Trace formula consists of 295 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:31:27,069 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:27,222 INFO L146 ILogger]: Checked inductivity of 105 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:31:27,241 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:31:27,241 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2019-05-23 11:31:27,242 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:31:27,242 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:31:27,242 INFO L146 ILogger]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:31:27,243 INFO L146 ILogger]: Start difference. First operand 423 states and 446 transitions. Second operand 21 states. [2019-05-23 11:31:29,109 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:29,110 INFO L146 ILogger]: Finished difference Result 574 states and 603 transitions. [2019-05-23 11:31:29,111 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:31:29,111 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 184 [2019-05-23 11:31:29,112 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:29,115 INFO L146 ILogger]: With dead ends: 574 [2019-05-23 11:31:29,115 INFO L146 ILogger]: Without dead ends: 545 [2019-05-23 11:31:29,115 INFO L146 ILogger]: 0 DeclaredPredicates, 220 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=287, Invalid=1519, Unknown=0, NotChecked=0, Total=1806 [2019-05-23 11:31:29,116 INFO L146 ILogger]: Start minimizeSevpa. Operand 545 states. [2019-05-23 11:31:29,126 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 545 to 510. [2019-05-23 11:31:29,127 INFO L146 ILogger]: Start removeUnreachable. Operand 510 states. [2019-05-23 11:31:29,128 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 510 states to 510 states and 538 transitions. [2019-05-23 11:31:29,129 INFO L146 ILogger]: Start accepts. Automaton has 510 states and 538 transitions. Word has length 184 [2019-05-23 11:31:29,129 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:29,129 INFO L146 ILogger]: Abstraction has 510 states and 538 transitions. [2019-05-23 11:31:29,129 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:31:29,129 INFO L146 ILogger]: Start isEmpty. Operand 510 states and 538 transitions. [2019-05-23 11:31:29,131 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 185 [2019-05-23 11:31:29,131 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:29,131 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:31:29,131 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:29,132 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:29,132 INFO L146 ILogger]: Analyzing trace with hash 1671520737, now seen corresponding path program 11 times [2019-05-23 11:31:29,132 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:29,132 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:29,133 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:29,133 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:31:29,133 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:29,149 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:29,611 INFO L146 ILogger]: Checked inductivity of 105 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:31:29,611 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:31:29,612 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 11:31:29,623 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:31:29,678 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-05-23 11:31:29,678 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:29,679 INFO L146 ILogger]: Trace formula consists of 297 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:31:29,682 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:29,832 INFO L146 ILogger]: Checked inductivity of 105 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:31:29,851 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:31:29,851 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2019-05-23 11:31:29,851 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:31:29,851 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:31:29,852 INFO L146 ILogger]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:31:29,852 INFO L146 ILogger]: Start difference. First operand 510 states and 538 transitions. Second operand 21 states. [2019-05-23 11:31:30,664 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:30,665 INFO L146 ILogger]: Finished difference Result 633 states and 664 transitions. [2019-05-23 11:31:30,665 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:31:30,665 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 184 [2019-05-23 11:31:30,666 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:30,669 INFO L146 ILogger]: With dead ends: 633 [2019-05-23 11:31:30,669 INFO L146 ILogger]: Without dead ends: 565 [2019-05-23 11:31:30,670 INFO L146 ILogger]: 0 DeclaredPredicates, 220 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=267, Invalid=1455, Unknown=0, NotChecked=0, Total=1722 [2019-05-23 11:31:30,670 INFO L146 ILogger]: Start minimizeSevpa. Operand 565 states. [2019-05-23 11:31:30,681 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 565 to 445. [2019-05-23 11:31:30,682 INFO L146 ILogger]: Start removeUnreachable. Operand 445 states. [2019-05-23 11:31:30,683 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 445 states to 445 states and 468 transitions. [2019-05-23 11:31:30,683 INFO L146 ILogger]: Start accepts. Automaton has 445 states and 468 transitions. Word has length 184 [2019-05-23 11:31:30,683 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:30,684 INFO L146 ILogger]: Abstraction has 445 states and 468 transitions. [2019-05-23 11:31:30,684 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:31:30,684 INFO L146 ILogger]: Start isEmpty. Operand 445 states and 468 transitions. [2019-05-23 11:31:30,685 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 185 [2019-05-23 11:31:30,685 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:30,686 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:31:30,686 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:30,686 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:30,686 INFO L146 ILogger]: Analyzing trace with hash 1159189672, now seen corresponding path program 12 times [2019-05-23 11:31:30,686 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:30,686 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:30,687 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:30,687 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:31:30,687 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:30,703 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:31,757 INFO L146 ILogger]: Checked inductivity of 105 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:31:31,757 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:31:31,757 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 11:31:31,769 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:31:31,833 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2019-05-23 11:31:31,833 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:31,835 INFO L146 ILogger]: Trace formula consists of 297 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:31:31,838 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:31,971 INFO L146 ILogger]: Checked inductivity of 105 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:31:31,989 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:31:31,990 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:31:31,990 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:31:31,990 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:31:31,991 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:31:31,991 INFO L146 ILogger]: Start difference. First operand 445 states and 468 transitions. Second operand 20 states. [2019-05-23 11:31:32,697 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:32,698 INFO L146 ILogger]: Finished difference Result 605 states and 631 transitions. [2019-05-23 11:31:32,698 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:31:32,698 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 184 [2019-05-23 11:31:32,699 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:32,702 INFO L146 ILogger]: With dead ends: 605 [2019-05-23 11:31:32,702 INFO L146 ILogger]: Without dead ends: 544 [2019-05-23 11:31:32,703 INFO L146 ILogger]: 0 DeclaredPredicates, 208 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=176, Invalid=816, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:31:32,703 INFO L146 ILogger]: Start minimizeSevpa. Operand 544 states. [2019-05-23 11:31:32,714 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 544 to 493. [2019-05-23 11:31:32,714 INFO L146 ILogger]: Start removeUnreachable. Operand 493 states. [2019-05-23 11:31:32,715 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 493 states to 493 states and 518 transitions. [2019-05-23 11:31:32,715 INFO L146 ILogger]: Start accepts. Automaton has 493 states and 518 transitions. Word has length 184 [2019-05-23 11:31:32,716 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:32,716 INFO L146 ILogger]: Abstraction has 493 states and 518 transitions. [2019-05-23 11:31:32,716 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:31:32,716 INFO L146 ILogger]: Start isEmpty. Operand 493 states and 518 transitions. [2019-05-23 11:31:32,717 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 185 [2019-05-23 11:31:32,717 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:32,718 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:31:32,718 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:32,718 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:32,718 INFO L146 ILogger]: Analyzing trace with hash -747251345, now seen corresponding path program 13 times [2019-05-23 11:31:32,719 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:32,719 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:32,719 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:32,719 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:31:32,720 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:32,734 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:32,939 INFO L146 ILogger]: Checked inductivity of 105 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:31:32,940 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:31:32,940 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:31:32,955 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:31:32,997 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:32,998 INFO L146 ILogger]: Trace formula consists of 297 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:31:32,999 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:33,130 INFO L146 ILogger]: Checked inductivity of 105 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:31:33,148 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:31:33,148 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:31:33,149 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:31:33,149 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:31:33,149 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:31:33,149 INFO L146 ILogger]: Start difference. First operand 493 states and 518 transitions. Second operand 20 states. [2019-05-23 11:31:33,931 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:33,932 INFO L146 ILogger]: Finished difference Result 605 states and 629 transitions. [2019-05-23 11:31:33,932 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:31:33,932 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 184 [2019-05-23 11:31:33,933 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:33,936 INFO L146 ILogger]: With dead ends: 605 [2019-05-23 11:31:33,936 INFO L146 ILogger]: Without dead ends: 528 [2019-05-23 11:31:33,937 INFO L146 ILogger]: 0 DeclaredPredicates, 208 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=176, Invalid=816, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:31:33,938 INFO L146 ILogger]: Start minimizeSevpa. Operand 528 states. [2019-05-23 11:31:33,948 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 528 to 477. [2019-05-23 11:31:33,948 INFO L146 ILogger]: Start removeUnreachable. Operand 477 states. [2019-05-23 11:31:33,949 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 477 states to 477 states and 500 transitions. [2019-05-23 11:31:33,949 INFO L146 ILogger]: Start accepts. Automaton has 477 states and 500 transitions. Word has length 184 [2019-05-23 11:31:33,949 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:33,949 INFO L146 ILogger]: Abstraction has 477 states and 500 transitions. [2019-05-23 11:31:33,950 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:31:33,950 INFO L146 ILogger]: Start isEmpty. Operand 477 states and 500 transitions. [2019-05-23 11:31:33,951 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 185 [2019-05-23 11:31:33,951 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:33,951 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:31:33,952 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:33,952 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:33,952 INFO L146 ILogger]: Analyzing trace with hash 1096249398, now seen corresponding path program 14 times [2019-05-23 11:31:33,952 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:33,952 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:33,953 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:33,953 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:31:33,953 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:33,967 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:34,152 INFO L146 ILogger]: Checked inductivity of 105 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:31:34,153 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:31:34,153 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:31:34,160 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:31:34,203 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:31:34,203 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:34,204 INFO L146 ILogger]: Trace formula consists of 297 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:31:34,206 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:34,334 INFO L146 ILogger]: Checked inductivity of 105 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:31:34,352 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:31:34,353 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:31:34,353 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:31:34,353 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:31:34,354 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:31:34,354 INFO L146 ILogger]: Start difference. First operand 477 states and 500 transitions. Second operand 20 states. [2019-05-23 11:31:35,018 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:35,018 INFO L146 ILogger]: Finished difference Result 605 states and 627 transitions. [2019-05-23 11:31:35,018 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:31:35,018 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 184 [2019-05-23 11:31:35,019 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:35,021 INFO L146 ILogger]: With dead ends: 605 [2019-05-23 11:31:35,021 INFO L146 ILogger]: Without dead ends: 512 [2019-05-23 11:31:35,021 INFO L146 ILogger]: 0 DeclaredPredicates, 208 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=176, Invalid=816, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:31:35,022 INFO L146 ILogger]: Start minimizeSevpa. Operand 512 states. [2019-05-23 11:31:35,031 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 512 to 461. [2019-05-23 11:31:35,031 INFO L146 ILogger]: Start removeUnreachable. Operand 461 states. [2019-05-23 11:31:35,032 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 461 states to 461 states and 482 transitions. [2019-05-23 11:31:35,032 INFO L146 ILogger]: Start accepts. Automaton has 461 states and 482 transitions. Word has length 184 [2019-05-23 11:31:35,033 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:35,033 INFO L146 ILogger]: Abstraction has 461 states and 482 transitions. [2019-05-23 11:31:35,033 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:31:35,033 INFO L146 ILogger]: Start isEmpty. Operand 461 states and 482 transitions. [2019-05-23 11:31:35,034 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 185 [2019-05-23 11:31:35,034 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:35,035 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:31:35,035 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:35,035 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:35,035 INFO L146 ILogger]: Analyzing trace with hash 156801277, now seen corresponding path program 15 times [2019-05-23 11:31:35,035 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:35,036 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:35,036 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:35,036 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:31:35,036 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:35,050 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:35,274 INFO L146 ILogger]: Checked inductivity of 105 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:31:35,275 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:31:35,275 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:31:35,284 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:31:35,331 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:31:35,331 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:35,332 INFO L146 ILogger]: Trace formula consists of 297 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:31:35,335 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:36,499 INFO L146 ILogger]: Checked inductivity of 105 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:31:36,517 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:31:36,517 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2019-05-23 11:31:36,518 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:31:36,518 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:31:36,518 INFO L146 ILogger]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:31:36,518 INFO L146 ILogger]: Start difference. First operand 461 states and 482 transitions. Second operand 24 states. [2019-05-23 11:31:37,866 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:37,866 INFO L146 ILogger]: Finished difference Result 816 states and 847 transitions. [2019-05-23 11:31:37,874 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:31:37,874 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 184 [2019-05-23 11:31:37,874 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:37,877 INFO L146 ILogger]: With dead ends: 816 [2019-05-23 11:31:37,877 INFO L146 ILogger]: Without dead ends: 691 [2019-05-23 11:31:37,878 INFO L146 ILogger]: 0 DeclaredPredicates, 225 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=327, Invalid=2223, Unknown=0, NotChecked=0, Total=2550 [2019-05-23 11:31:37,878 INFO L146 ILogger]: Start minimizeSevpa. Operand 691 states. [2019-05-23 11:31:37,890 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 691 to 476. [2019-05-23 11:31:37,890 INFO L146 ILogger]: Start removeUnreachable. Operand 476 states. [2019-05-23 11:31:37,890 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 476 states to 476 states and 498 transitions. [2019-05-23 11:31:37,891 INFO L146 ILogger]: Start accepts. Automaton has 476 states and 498 transitions. Word has length 184 [2019-05-23 11:31:37,891 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:37,891 INFO L146 ILogger]: Abstraction has 476 states and 498 transitions. [2019-05-23 11:31:37,891 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:31:37,891 INFO L146 ILogger]: Start isEmpty. Operand 476 states and 498 transitions. [2019-05-23 11:31:37,892 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 185 [2019-05-23 11:31:37,892 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:37,892 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:31:37,892 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:37,893 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:37,893 INFO L146 ILogger]: Analyzing trace with hash -97935221, now seen corresponding path program 16 times [2019-05-23 11:31:37,893 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:37,893 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:37,895 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:37,895 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:31:37,895 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:37,909 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:38,085 INFO L146 ILogger]: Checked inductivity of 105 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:31:38,086 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:31:38,086 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:31:38,095 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:31:38,145 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:31:38,145 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:38,146 INFO L146 ILogger]: Trace formula consists of 295 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:31:38,149 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:38,386 INFO L146 ILogger]: Checked inductivity of 105 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:31:38,414 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:31:38,414 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:31:38,415 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:31:38,415 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:31:38,415 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:31:38,415 INFO L146 ILogger]: Start difference. First operand 476 states and 498 transitions. Second operand 20 states. [2019-05-23 11:31:39,085 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:39,085 INFO L146 ILogger]: Finished difference Result 658 states and 679 transitions. [2019-05-23 11:31:39,085 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:31:39,086 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 184 [2019-05-23 11:31:39,086 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:39,088 INFO L146 ILogger]: With dead ends: 658 [2019-05-23 11:31:39,088 INFO L146 ILogger]: Without dead ends: 517 [2019-05-23 11:31:39,089 INFO L146 ILogger]: 0 DeclaredPredicates, 208 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=176, Invalid=816, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:31:39,089 INFO L146 ILogger]: Start minimizeSevpa. Operand 517 states. [2019-05-23 11:31:39,098 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 517 to 468. [2019-05-23 11:31:39,099 INFO L146 ILogger]: Start removeUnreachable. Operand 468 states. [2019-05-23 11:31:39,100 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 468 states to 468 states and 488 transitions. [2019-05-23 11:31:39,100 INFO L146 ILogger]: Start accepts. Automaton has 468 states and 488 transitions. Word has length 184 [2019-05-23 11:31:39,100 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:39,100 INFO L146 ILogger]: Abstraction has 468 states and 488 transitions. [2019-05-23 11:31:39,100 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:31:39,100 INFO L146 ILogger]: Start isEmpty. Operand 468 states and 488 transitions. [2019-05-23 11:31:39,102 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 185 [2019-05-23 11:31:39,102 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:39,102 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:31:39,102 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:39,102 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:39,102 INFO L146 ILogger]: Analyzing trace with hash -2144239790, now seen corresponding path program 17 times [2019-05-23 11:31:39,103 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:39,103 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:39,103 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:39,103 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:31:39,103 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:39,117 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:39,287 INFO L146 ILogger]: Checked inductivity of 105 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:31:39,287 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:31:39,287 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:31:39,298 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:31:39,360 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-05-23 11:31:39,361 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:39,361 INFO L146 ILogger]: Trace formula consists of 297 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:31:39,363 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:39,550 INFO L146 ILogger]: Checked inductivity of 105 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-05-23 11:31:39,568 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:31:39,568 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2019-05-23 11:31:39,569 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:31:39,569 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:31:39,569 INFO L146 ILogger]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:31:39,569 INFO L146 ILogger]: Start difference. First operand 468 states and 488 transitions. Second operand 24 states.