java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/array-examples/standard_partition_true-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:19:12,906 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:19:12,912 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:19:12,928 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:19:12,928 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:19:12,929 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:19:12,930 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:19:12,932 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:19:12,934 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:19:12,935 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:19:12,936 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:19:12,936 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:19:12,937 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:19:12,938 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:19:12,939 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:19:12,940 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:19:12,941 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:19:12,943 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:19:12,945 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:19:12,946 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:19:12,947 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:19:12,949 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:19:12,951 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:19:12,952 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:19:12,952 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:19:12,953 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:19:12,953 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:19:12,954 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:19:12,955 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:19:12,955 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:19:12,956 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:19:12,957 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:19:12,958 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:19:12,958 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:19:12,959 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:19:12,959 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:19:12,960 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:19:12,961 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:19:12,961 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:19:12,962 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:19:12,985 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:19:12,988 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:19:12,989 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:19:12,990 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:19:12,990 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:19:12,990 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:19:12,990 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:19:12,990 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:19:12,991 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:19:12,992 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:19:12,992 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:19:12,992 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:19:12,992 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:19:12,992 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:19:12,993 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:19:12,993 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:19:12,993 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:19:12,993 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:19:12,993 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:19:12,994 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:19:12,996 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:19:12,996 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:19:12,996 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:19:12,996 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:19:12,996 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:19:12,997 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:19:12,997 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:19:12,997 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:19:12,997 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 11:19:13,051 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:19:13,071 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:19:13,076 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:19:13,078 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:19:13,078 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:19:13,079 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_partition_true-unreach-call_ground.i [2019-05-23 11:19:13,145 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9480811f4/2a0e760af0fc48cebf86d77abc3591e1/FLAG7968b1c1d [2019-05-23 11:19:13,600 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:19:13,601 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_partition_true-unreach-call_ground.i [2019-05-23 11:19:13,607 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9480811f4/2a0e760af0fc48cebf86d77abc3591e1/FLAG7968b1c1d [2019-05-23 11:19:13,971 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9480811f4/2a0e760af0fc48cebf86d77abc3591e1 [2019-05-23 11:19:13,980 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:19:13,982 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:19:13,983 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:19:13,983 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:19:13,987 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:19:13,988 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:19:13" (1/1) ... [2019-05-23 11:19:13,991 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2271f7df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:13, skipping insertion in model container [2019-05-23 11:19:13,992 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:19:13" (1/1) ... [2019-05-23 11:19:13,999 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:19:14,016 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:19:14,206 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:19:14,211 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:19:14,239 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:19:14,262 INFO L146 ILogger]: Completed translation [2019-05-23 11:19:14,263 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:14 WrapperNode [2019-05-23 11:19:14,263 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:19:14,264 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:19:14,264 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:19:14,264 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:19:14,275 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:14" (1/1) ... [2019-05-23 11:19:14,285 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:14" (1/1) ... [2019-05-23 11:19:14,311 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:19:14,312 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:19:14,312 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:19:14,312 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:19:14,324 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:14" (1/1) ... [2019-05-23 11:19:14,325 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:14" (1/1) ... [2019-05-23 11:19:14,326 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:14" (1/1) ... [2019-05-23 11:19:14,328 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:14" (1/1) ... [2019-05-23 11:19:14,343 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:14" (1/1) ... [2019-05-23 11:19:14,352 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:14" (1/1) ... [2019-05-23 11:19:14,353 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:14" (1/1) ... [2019-05-23 11:19:14,361 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:19:14,362 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:19:14,362 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:19:14,362 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:19:14,363 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:14" (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 11:19:14,547 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:19:14,547 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:19:14,547 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:19:14,547 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:19:14,548 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:19:14,548 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:19:15,016 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:19:15,016 INFO L146 ILogger]: Removed 9 assume(true) statements. [2019-05-23 11:19:15,018 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:19:15 BoogieIcfgContainer [2019-05-23 11:19:15,018 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:19:15,019 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:19:15,019 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:19:15,022 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:19:15,023 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:19:13" (1/3) ... [2019-05-23 11:19:15,024 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1284653b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:19:15, skipping insertion in model container [2019-05-23 11:19:15,024 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:19:14" (2/3) ... [2019-05-23 11:19:15,024 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1284653b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:19:15, skipping insertion in model container [2019-05-23 11:19:15,024 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:19:15" (3/3) ... [2019-05-23 11:19:15,026 INFO L146 ILogger]: Analyzing ICFG standard_partition_true-unreach-call_ground.i [2019-05-23 11:19:15,038 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:19:15,049 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:19:15,063 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:19:15,090 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:19:15,090 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:19:15,091 INFO L146 ILogger]: Hoare is true [2019-05-23 11:19:15,091 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:19:15,091 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:19:15,091 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:19:15,091 INFO L146 ILogger]: Difference is false [2019-05-23 11:19:15,091 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:19:15,092 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:19:15,107 INFO L146 ILogger]: Start isEmpty. Operand 53 states. [2019-05-23 11:19:15,113 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 23 [2019-05-23 11:19:15,114 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:15,115 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] [2019-05-23 11:19:15,117 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:15,122 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:15,123 INFO L146 ILogger]: Analyzing trace with hash 1222932282, now seen corresponding path program 1 times [2019-05-23 11:19:15,124 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:15,125 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:15,167 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:15,167 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:15,167 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:15,206 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:15,274 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 11:19:15,276 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:19:15,277 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:19:15,280 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:19:15,295 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:19:15,296 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:19:15,299 INFO L146 ILogger]: Start difference. First operand 53 states. Second operand 3 states. [2019-05-23 11:19:15,401 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:15,401 INFO L146 ILogger]: Finished difference Result 106 states and 125 transitions. [2019-05-23 11:19:15,402 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:19:15,403 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 22 [2019-05-23 11:19:15,404 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:15,414 INFO L146 ILogger]: With dead ends: 106 [2019-05-23 11:19:15,414 INFO L146 ILogger]: Without dead ends: 65 [2019-05-23 11:19:15,418 INFO L146 ILogger]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:19:15,434 INFO L146 ILogger]: Start minimizeSevpa. Operand 65 states. [2019-05-23 11:19:15,453 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 65 to 47. [2019-05-23 11:19:15,454 INFO L146 ILogger]: Start removeUnreachable. Operand 47 states. [2019-05-23 11:19:15,455 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2019-05-23 11:19:15,457 INFO L146 ILogger]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 22 [2019-05-23 11:19:15,458 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:15,458 INFO L146 ILogger]: Abstraction has 47 states and 51 transitions. [2019-05-23 11:19:15,458 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:19:15,458 INFO L146 ILogger]: Start isEmpty. Operand 47 states and 51 transitions. [2019-05-23 11:19:15,459 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 33 [2019-05-23 11:19:15,459 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:15,460 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:15,460 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:15,460 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:15,461 INFO L146 ILogger]: Analyzing trace with hash -379853683, now seen corresponding path program 1 times [2019-05-23 11:19:15,461 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:15,461 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:15,462 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:15,462 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:15,463 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:15,490 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:15,574 INFO L146 ILogger]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:19:15,574 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:15,574 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 11:19:15,595 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:15,633 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:15,635 INFO L146 ILogger]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:19:15,642 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:15,756 INFO L146 ILogger]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:19:15,782 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:15,783 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-05-23 11:19:15,784 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:19:15,785 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:19:15,785 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:19:15,785 INFO L146 ILogger]: Start difference. First operand 47 states and 51 transitions. Second operand 5 states. [2019-05-23 11:19:16,018 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:16,019 INFO L146 ILogger]: Finished difference Result 111 states and 123 transitions. [2019-05-23 11:19:16,020 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:19:16,021 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 32 [2019-05-23 11:19:16,021 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:16,022 INFO L146 ILogger]: With dead ends: 111 [2019-05-23 11:19:16,022 INFO L146 ILogger]: Without dead ends: 85 [2019-05-23 11:19:16,023 INFO L146 ILogger]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:19:16,024 INFO L146 ILogger]: Start minimizeSevpa. Operand 85 states. [2019-05-23 11:19:16,031 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 85 to 67. [2019-05-23 11:19:16,031 INFO L146 ILogger]: Start removeUnreachable. Operand 67 states. [2019-05-23 11:19:16,033 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2019-05-23 11:19:16,033 INFO L146 ILogger]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 32 [2019-05-23 11:19:16,033 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:16,034 INFO L146 ILogger]: Abstraction has 67 states and 73 transitions. [2019-05-23 11:19:16,034 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:19:16,034 INFO L146 ILogger]: Start isEmpty. Operand 67 states and 73 transitions. [2019-05-23 11:19:16,035 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 43 [2019-05-23 11:19:16,035 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:16,036 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:19:16,036 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:16,036 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:16,037 INFO L146 ILogger]: Analyzing trace with hash -1334272294, now seen corresponding path program 2 times [2019-05-23 11:19:16,037 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:16,037 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:16,038 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:16,038 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:16,039 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:16,068 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:16,167 INFO L146 ILogger]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:19:16,167 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:16,167 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:19:16,186 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:19:16,217 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-05-23 11:19:16,217 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:16,219 INFO L146 ILogger]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:19:16,221 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:16,285 INFO L146 ILogger]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-05-23 11:19:16,309 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:19:16,310 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2019-05-23 11:19:16,310 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:19:16,311 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:19:16,311 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:19:16,311 INFO L146 ILogger]: Start difference. First operand 67 states and 73 transitions. Second operand 7 states. [2019-05-23 11:19:16,722 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:16,723 INFO L146 ILogger]: Finished difference Result 216 states and 242 transitions. [2019-05-23 11:19:16,723 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-05-23 11:19:16,723 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 42 [2019-05-23 11:19:16,724 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:16,726 INFO L146 ILogger]: With dead ends: 216 [2019-05-23 11:19:16,726 INFO L146 ILogger]: Without dead ends: 136 [2019-05-23 11:19:16,739 INFO L146 ILogger]: 0 DeclaredPredicates, 49 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:19:16,739 INFO L146 ILogger]: Start minimizeSevpa. Operand 136 states. [2019-05-23 11:19:16,762 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 136 to 96. [2019-05-23 11:19:16,762 INFO L146 ILogger]: Start removeUnreachable. Operand 96 states. [2019-05-23 11:19:16,766 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 96 states to 96 states and 106 transitions. [2019-05-23 11:19:16,766 INFO L146 ILogger]: Start accepts. Automaton has 96 states and 106 transitions. Word has length 42 [2019-05-23 11:19:16,767 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:16,767 INFO L146 ILogger]: Abstraction has 96 states and 106 transitions. [2019-05-23 11:19:16,767 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:19:16,767 INFO L146 ILogger]: Start isEmpty. Operand 96 states and 106 transitions. [2019-05-23 11:19:16,769 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 57 [2019-05-23 11:19:16,771 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:16,771 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:16,772 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:16,772 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:16,772 INFO L146 ILogger]: Analyzing trace with hash -484037553, now seen corresponding path program 1 times [2019-05-23 11:19:16,772 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:16,773 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:16,774 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:16,775 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:16,775 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:16,809 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:17,004 INFO L146 ILogger]: Checked inductivity of 34 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-05-23 11:19:17,004 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:17,005 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 11:19:17,020 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:17,059 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:17,060 INFO L146 ILogger]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:19:17,062 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:17,105 INFO L146 ILogger]: Checked inductivity of 34 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-05-23 11:19:17,126 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:17,127 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-05-23 11:19:17,127 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:19:17,127 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:19:17,128 INFO L146 ILogger]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:19:17,128 INFO L146 ILogger]: Start difference. First operand 96 states and 106 transitions. Second operand 7 states. [2019-05-23 11:19:17,786 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:17,787 INFO L146 ILogger]: Finished difference Result 192 states and 214 transitions. [2019-05-23 11:19:17,787 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:19:17,788 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 56 [2019-05-23 11:19:17,788 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:17,790 INFO L146 ILogger]: With dead ends: 192 [2019-05-23 11:19:17,790 INFO L146 ILogger]: Without dead ends: 146 [2019-05-23 11:19:17,792 INFO L146 ILogger]: 0 DeclaredPredicates, 61 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:19:17,792 INFO L146 ILogger]: Start minimizeSevpa. Operand 146 states. [2019-05-23 11:19:17,806 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 146 to 121. [2019-05-23 11:19:17,806 INFO L146 ILogger]: Start removeUnreachable. Operand 121 states. [2019-05-23 11:19:17,808 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 121 states to 121 states and 134 transitions. [2019-05-23 11:19:17,808 INFO L146 ILogger]: Start accepts. Automaton has 121 states and 134 transitions. Word has length 56 [2019-05-23 11:19:17,809 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:17,809 INFO L146 ILogger]: Abstraction has 121 states and 134 transitions. [2019-05-23 11:19:17,809 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:19:17,809 INFO L146 ILogger]: Start isEmpty. Operand 121 states and 134 transitions. [2019-05-23 11:19:17,811 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 67 [2019-05-23 11:19:17,811 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:17,812 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:17,812 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:17,812 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:17,812 INFO L146 ILogger]: Analyzing trace with hash -1122639908, now seen corresponding path program 2 times [2019-05-23 11:19:17,813 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:17,813 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:17,814 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:17,814 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:19:17,814 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:17,833 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:17,953 INFO L146 ILogger]: Checked inductivity of 65 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-05-23 11:19:17,953 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:17,953 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 11:19:17,962 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:19:17,994 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:19:17,994 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:17,995 INFO L146 ILogger]: Trace formula consists of 112 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:19:17,997 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:18,053 INFO L146 ILogger]: Checked inductivity of 65 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-05-23 11:19:18,073 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:18,073 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-05-23 11:19:18,074 INFO L146 ILogger]: Interpolant automaton has 8 states [2019-05-23 11:19:18,074 INFO L146 ILogger]: Constructing interpolant automaton starting with 8 interpolants. [2019-05-23 11:19:18,074 INFO L146 ILogger]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:19:18,074 INFO L146 ILogger]: Start difference. First operand 121 states and 134 transitions. Second operand 8 states. [2019-05-23 11:19:18,263 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:18,263 INFO L146 ILogger]: Finished difference Result 227 states and 253 transitions. [2019-05-23 11:19:18,264 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:19:18,264 INFO L146 ILogger]: Start accepts. Automaton has 8 states. Word has length 66 [2019-05-23 11:19:18,265 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:18,266 INFO L146 ILogger]: With dead ends: 227 [2019-05-23 11:19:18,266 INFO L146 ILogger]: Without dead ends: 171 [2019-05-23 11:19:18,267 INFO L146 ILogger]: 0 DeclaredPredicates, 72 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:19:18,268 INFO L146 ILogger]: Start minimizeSevpa. Operand 171 states. [2019-05-23 11:19:18,277 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 171 to 146. [2019-05-23 11:19:18,277 INFO L146 ILogger]: Start removeUnreachable. Operand 146 states. [2019-05-23 11:19:18,278 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 146 states to 146 states and 162 transitions. [2019-05-23 11:19:18,278 INFO L146 ILogger]: Start accepts. Automaton has 146 states and 162 transitions. Word has length 66 [2019-05-23 11:19:18,279 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:18,279 INFO L146 ILogger]: Abstraction has 146 states and 162 transitions. [2019-05-23 11:19:18,279 INFO L146 ILogger]: Interpolant automaton has 8 states. [2019-05-23 11:19:18,279 INFO L146 ILogger]: Start isEmpty. Operand 146 states and 162 transitions. [2019-05-23 11:19:18,281 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 77 [2019-05-23 11:19:18,281 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:18,282 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:18,282 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:18,282 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:18,282 INFO L146 ILogger]: Analyzing trace with hash 1869407023, now seen corresponding path program 3 times [2019-05-23 11:19:18,282 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:18,283 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:18,283 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:18,284 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:18,284 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:18,302 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:18,411 INFO L146 ILogger]: Checked inductivity of 106 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-05-23 11:19:18,411 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:18,411 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 11:19:18,420 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:19:18,444 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:19:18,444 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:18,445 INFO L146 ILogger]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:19:18,448 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:18,793 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:18,794 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2019-05-23 11:19:18,798 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-05-23 11:19:18,866 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:18,869 INFO L146 ILogger]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:18,869 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:34, output treesize:16 [2019-05-23 11:19:19,121 INFO L146 ILogger]: Checked inductivity of 106 backedges. 24 proven. 17 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-05-23 11:19:19,141 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:19,141 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 16 [2019-05-23 11:19:19,141 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:19:19,142 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:19:19,142 INFO L146 ILogger]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:19:19,142 INFO L146 ILogger]: Start difference. First operand 146 states and 162 transitions. Second operand 16 states. [2019-05-23 11:19:21,027 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:21,028 INFO L146 ILogger]: Finished difference Result 432 states and 491 transitions. [2019-05-23 11:19:21,029 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2019-05-23 11:19:21,029 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 76 [2019-05-23 11:19:21,029 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:21,031 INFO L146 ILogger]: With dead ends: 432 [2019-05-23 11:19:21,031 INFO L146 ILogger]: Without dead ends: 366 [2019-05-23 11:19:21,033 INFO L146 ILogger]: 0 DeclaredPredicates, 128 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1141 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=887, Invalid=2773, Unknown=0, NotChecked=0, Total=3660 [2019-05-23 11:19:21,034 INFO L146 ILogger]: Start minimizeSevpa. Operand 366 states. [2019-05-23 11:19:21,052 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 366 to 304. [2019-05-23 11:19:21,052 INFO L146 ILogger]: Start removeUnreachable. Operand 304 states. [2019-05-23 11:19:21,054 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 304 states to 304 states and 339 transitions. [2019-05-23 11:19:21,055 INFO L146 ILogger]: Start accepts. Automaton has 304 states and 339 transitions. Word has length 76 [2019-05-23 11:19:21,055 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:21,055 INFO L146 ILogger]: Abstraction has 304 states and 339 transitions. [2019-05-23 11:19:21,055 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:19:21,055 INFO L146 ILogger]: Start isEmpty. Operand 304 states and 339 transitions. [2019-05-23 11:19:21,058 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 107 [2019-05-23 11:19:21,059 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:21,059 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:21,059 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:21,059 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:21,060 INFO L146 ILogger]: Analyzing trace with hash -602205416, now seen corresponding path program 4 times [2019-05-23 11:19:21,060 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:21,060 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:21,061 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:21,061 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:21,061 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:21,106 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:21,250 INFO L146 ILogger]: Checked inductivity of 289 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2019-05-23 11:19:21,251 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:21,251 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 11:19:21,260 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:19:21,295 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:19:21,295 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:21,296 INFO L146 ILogger]: Trace formula consists of 134 conjuncts, 15 conjunts are in the unsatisfiable core [2019-05-23 11:19:21,300 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:21,483 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:21,484 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 61 [2019-05-23 11:19:21,487 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:21,531 INFO L146 ILogger]: treesize reduction 39, result has 44.3 percent of original size [2019-05-23 11:19:21,533 INFO L146 ILogger]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-05-23 11:19:21,533 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 5 variables, input treesize:34, output treesize:27 [2019-05-23 11:19:21,742 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:21,743 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 26 [2019-05-23 11:19:21,745 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-05-23 11:19:21,754 INFO L146 ILogger]: treesize reduction 17, result has 15.0 percent of original size [2019-05-23 11:19:21,754 INFO L146 ILogger]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:21,754 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 6 variables, input treesize:34, output treesize:3 [2019-05-23 11:19:21,894 INFO L146 ILogger]: Checked inductivity of 289 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2019-05-23 11:19:21,913 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:21,913 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2019-05-23 11:19:21,914 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:19:21,914 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:19:21,914 INFO L146 ILogger]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:19:21,914 INFO L146 ILogger]: Start difference. First operand 304 states and 339 transitions. Second operand 20 states. [2019-05-23 11:19:50,078 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:50,079 INFO L146 ILogger]: Finished difference Result 909 states and 1011 transitions. [2019-05-23 11:19:50,087 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2019-05-23 11:19:50,087 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 106 [2019-05-23 11:19:50,087 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:50,092 INFO L146 ILogger]: With dead ends: 909 [2019-05-23 11:19:50,093 INFO L146 ILogger]: Without dead ends: 732 [2019-05-23 11:19:50,099 INFO L146 ILogger]: 0 DeclaredPredicates, 193 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3418 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1687, Invalid=7625, Unknown=0, NotChecked=0, Total=9312 [2019-05-23 11:19:50,100 INFO L146 ILogger]: Start minimizeSevpa. Operand 732 states. [2019-05-23 11:19:50,133 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 732 to 609. [2019-05-23 11:19:50,133 INFO L146 ILogger]: Start removeUnreachable. Operand 609 states. [2019-05-23 11:19:50,141 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 609 states to 609 states and 677 transitions. [2019-05-23 11:19:50,142 INFO L146 ILogger]: Start accepts. Automaton has 609 states and 677 transitions. Word has length 106 [2019-05-23 11:19:50,142 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:50,142 INFO L146 ILogger]: Abstraction has 609 states and 677 transitions. [2019-05-23 11:19:50,142 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:19:50,142 INFO L146 ILogger]: Start isEmpty. Operand 609 states and 677 transitions. [2019-05-23 11:19:50,153 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 121 [2019-05-23 11:19:50,153 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:50,153 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:50,154 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:50,154 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:50,154 INFO L146 ILogger]: Analyzing trace with hash -1909410095, now seen corresponding path program 5 times [2019-05-23 11:19:50,154 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:50,154 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:50,155 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:50,155 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:50,155 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:50,194 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:50,372 INFO L146 ILogger]: Checked inductivity of 368 backedges. 0 proven. 179 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2019-05-23 11:19:50,373 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:50,373 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 11:19:50,385 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:19:50,427 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2019-05-23 11:19:50,427 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:50,429 INFO L146 ILogger]: Trace formula consists of 188 conjuncts, 11 conjunts are in the unsatisfiable core [2019-05-23 11:19:50,433 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:50,463 INFO L146 ILogger]: Checked inductivity of 368 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2019-05-23 11:19:50,491 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:50,491 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2019-05-23 11:19:50,492 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:19:50,492 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:19:50,492 INFO L146 ILogger]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:19:50,493 INFO L146 ILogger]: Start difference. First operand 609 states and 677 transitions. Second operand 13 states. [2019-05-23 11:19:50,902 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:19:50,903 INFO L146 ILogger]: Finished difference Result 1141 states and 1271 transitions. [2019-05-23 11:19:50,904 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:19:50,904 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 120 [2019-05-23 11:19:50,905 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:19:50,909 INFO L146 ILogger]: With dead ends: 1141 [2019-05-23 11:19:50,909 INFO L146 ILogger]: Without dead ends: 753 [2019-05-23 11:19:50,910 INFO L146 ILogger]: 0 DeclaredPredicates, 131 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:19:50,911 INFO L146 ILogger]: Start minimizeSevpa. Operand 753 states. [2019-05-23 11:19:50,928 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 753 to 674. [2019-05-23 11:19:50,928 INFO L146 ILogger]: Start removeUnreachable. Operand 674 states. [2019-05-23 11:19:50,930 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 674 states to 674 states and 749 transitions. [2019-05-23 11:19:50,931 INFO L146 ILogger]: Start accepts. Automaton has 674 states and 749 transitions. Word has length 120 [2019-05-23 11:19:50,931 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:19:50,931 INFO L146 ILogger]: Abstraction has 674 states and 749 transitions. [2019-05-23 11:19:50,931 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:19:50,931 INFO L146 ILogger]: Start isEmpty. Operand 674 states and 749 transitions. [2019-05-23 11:19:50,934 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 131 [2019-05-23 11:19:50,934 INFO L146 ILogger]: Found error trace [2019-05-23 11:19:50,934 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:19:50,935 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:19:50,935 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:19:50,935 INFO L146 ILogger]: Analyzing trace with hash -353399142, now seen corresponding path program 6 times [2019-05-23 11:19:50,935 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:19:50,935 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:19:50,936 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:50,936 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:19:50,936 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:19:50,954 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:51,673 INFO L146 ILogger]: Checked inductivity of 458 backedges. 0 proven. 223 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2019-05-23 11:19:51,673 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:19:51,673 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:19:51,682 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:19:51,751 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-05-23 11:19:51,751 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:19:51,752 INFO L146 ILogger]: Trace formula consists of 146 conjuncts, 19 conjunts are in the unsatisfiable core [2019-05-23 11:19:51,756 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:19:51,902 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:51,903 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 73 [2019-05-23 11:19:51,905 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:51,942 INFO L146 ILogger]: treesize reduction 47, result has 46.6 percent of original size [2019-05-23 11:19:51,943 INFO L146 ILogger]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-05-23 11:19:51,944 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 5 variables, input treesize:44, output treesize:37 [2019-05-23 11:19:52,183 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:19:52,215 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:52,216 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 96 [2019-05-23 11:19:52,220 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:19:52,294 INFO L146 ILogger]: treesize reduction 80, result has 46.3 percent of original size [2019-05-23 11:19:52,297 INFO L146 ILogger]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-05-23 11:19:52,298 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 6 variables, input treesize:48, output treesize:39 [2019-05-23 11:19:52,466 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:19:52,467 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 26 [2019-05-23 11:19:52,468 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-05-23 11:19:52,510 INFO L146 ILogger]: treesize reduction 17, result has 15.0 percent of original size [2019-05-23 11:19:52,511 INFO L146 ILogger]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:19:52,511 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 5 variables, input treesize:34, output treesize:3 [2019-05-23 11:19:52,671 INFO L146 ILogger]: Checked inductivity of 458 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 407 trivial. 0 not checked. [2019-05-23 11:19:52,691 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:19:52,691 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 25 [2019-05-23 11:19:52,691 INFO L146 ILogger]: Interpolant automaton has 25 states [2019-05-23 11:19:52,692 INFO L146 ILogger]: Constructing interpolant automaton starting with 25 interpolants. [2019-05-23 11:19:52,692 INFO L146 ILogger]: CoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:19:52,692 INFO L146 ILogger]: Start difference. First operand 674 states and 749 transitions. Second operand 25 states.