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-industry-pattern/array_assert_loop_dep_false-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:21:14,915 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:21:14,921 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:21:14,935 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:21:14,935 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:21:14,937 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:21:14,938 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:21:14,940 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:21:14,942 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:21:14,943 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:21:14,944 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:21:14,944 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:21:14,945 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:21:14,946 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:21:14,947 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:21:14,948 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:21:14,949 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:21:14,951 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:21:14,954 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:21:14,955 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:21:14,957 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:21:14,958 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:21:14,960 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:21:14,961 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:21:14,961 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:21:14,962 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:21:14,963 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:21:14,964 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:21:14,964 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:21:14,965 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:21:14,966 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:21:14,967 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:21:14,968 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:21:14,968 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:21:14,969 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:21:14,969 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:21:14,969 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:21:14,971 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:21:14,971 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:21:14,972 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:21:14,999 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:21:15,000 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:21:15,001 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:21:15,001 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:21:15,001 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:21:15,001 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:21:15,002 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:21:15,002 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:21:15,002 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:21:15,002 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:21:15,002 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:21:15,003 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:21:15,004 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:21:15,004 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:21:15,004 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:21:15,004 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:21:15,005 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:21:15,006 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:21:15,006 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:21:15,006 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:21:15,007 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:21:15,007 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:21:15,007 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:21:15,007 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:21:15,007 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:21:15,008 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:21:15,008 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:21:15,009 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:21:15,009 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 11:21:15,059 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:21:15,077 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:21:15,081 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:21:15,083 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:21:15,083 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:21:15,084 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-industry-pattern/array_assert_loop_dep_false-unreach-call_true-termination.i [2019-05-23 11:21:15,144 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4c8412e7/d2cb02d008ab484e8307e37602e2748d/FLAG09d555d30 [2019-05-23 11:21:15,583 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:21:15,584 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-industry-pattern/array_assert_loop_dep_false-unreach-call_true-termination.i [2019-05-23 11:21:15,590 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4c8412e7/d2cb02d008ab484e8307e37602e2748d/FLAG09d555d30 [2019-05-23 11:21:15,960 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4c8412e7/d2cb02d008ab484e8307e37602e2748d [2019-05-23 11:21:15,969 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:21:15,970 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:21:15,971 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:21:15,971 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:21:15,975 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:21:15,977 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:21:15" (1/1) ... [2019-05-23 11:21:15,980 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b8558 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:15, skipping insertion in model container [2019-05-23 11:21:15,980 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:21:15" (1/1) ... [2019-05-23 11:21:15,988 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:21:16,004 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:21:16,224 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:21:16,228 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:21:16,258 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:21:16,283 INFO L146 ILogger]: Completed translation [2019-05-23 11:21:16,284 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:16 WrapperNode [2019-05-23 11:21:16,284 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:21:16,285 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:21:16,285 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:21:16,286 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:21:16,296 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:16" (1/1) ... [2019-05-23 11:21:16,312 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:16" (1/1) ... [2019-05-23 11:21:16,337 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:21:16,337 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:21:16,337 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:21:16,338 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:21:16,347 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:16" (1/1) ... [2019-05-23 11:21:16,348 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:16" (1/1) ... [2019-05-23 11:21:16,349 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:16" (1/1) ... [2019-05-23 11:21:16,350 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:16" (1/1) ... [2019-05-23 11:21:16,355 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:16" (1/1) ... [2019-05-23 11:21:16,449 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:16" (1/1) ... [2019-05-23 11:21:16,455 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:16" (1/1) ... [2019-05-23 11:21:16,458 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:21:16,458 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:21:16,458 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:21:16,459 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:21:16,460 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:16" (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 11:21:16,520 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:21:16,520 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:21:16,520 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:21:16,520 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:21:16,520 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:21:16,521 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:21:16,925 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:21:16,926 INFO L146 ILogger]: Removed 8 assume(true) statements. [2019-05-23 11:21:16,927 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:21:16 BoogieIcfgContainer [2019-05-23 11:21:16,927 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:21:16,928 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:21:16,928 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:21:16,931 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:21:16,932 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:21:15" (1/3) ... [2019-05-23 11:21:16,932 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4140cae2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:21:16, skipping insertion in model container [2019-05-23 11:21:16,933 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:16" (2/3) ... [2019-05-23 11:21:16,933 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4140cae2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:21:16, skipping insertion in model container [2019-05-23 11:21:16,933 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:21:16" (3/3) ... [2019-05-23 11:21:16,935 INFO L146 ILogger]: Analyzing ICFG array_assert_loop_dep_false-unreach-call_true-termination.i [2019-05-23 11:21:16,943 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:21:16,950 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:21:16,965 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:21:16,997 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:21:16,998 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:21:16,998 INFO L146 ILogger]: Hoare is true [2019-05-23 11:21:16,998 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:21:16,999 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:21:16,999 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:21:16,999 INFO L146 ILogger]: Difference is false [2019-05-23 11:21:17,000 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:21:17,000 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:21:17,017 INFO L146 ILogger]: Start isEmpty. Operand 33 states. [2019-05-23 11:21:17,025 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 17 [2019-05-23 11:21:17,025 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:17,026 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:17,029 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:17,035 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:17,035 INFO L146 ILogger]: Analyzing trace with hash -1375344097, now seen corresponding path program 1 times [2019-05-23 11:21:17,036 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:17,037 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:17,079 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:17,079 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:17,079 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:17,114 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:17,151 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 11:21:17,154 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:21:17,155 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:21:17,158 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:21:17,170 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:21:17,171 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:21:17,173 INFO L146 ILogger]: Start difference. First operand 33 states. Second operand 2 states. [2019-05-23 11:21:17,188 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:17,188 INFO L146 ILogger]: Finished difference Result 54 states and 62 transitions. [2019-05-23 11:21:17,189 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:21:17,190 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 16 [2019-05-23 11:21:17,190 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:17,200 INFO L146 ILogger]: With dead ends: 54 [2019-05-23 11:21:17,200 INFO L146 ILogger]: Without dead ends: 27 [2019-05-23 11:21:17,203 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 11:21:17,218 INFO L146 ILogger]: Start minimizeSevpa. Operand 27 states. [2019-05-23 11:21:17,231 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-05-23 11:21:17,232 INFO L146 ILogger]: Start removeUnreachable. Operand 27 states. [2019-05-23 11:21:17,234 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2019-05-23 11:21:17,236 INFO L146 ILogger]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 16 [2019-05-23 11:21:17,237 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:17,237 INFO L146 ILogger]: Abstraction has 27 states and 29 transitions. [2019-05-23 11:21:17,237 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:21:17,237 INFO L146 ILogger]: Start isEmpty. Operand 27 states and 29 transitions. [2019-05-23 11:21:17,238 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 17 [2019-05-23 11:21:17,238 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:17,238 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:17,239 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:17,239 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:17,239 INFO L146 ILogger]: Analyzing trace with hash 2006844182, now seen corresponding path program 1 times [2019-05-23 11:21:17,239 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:17,240 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:17,243 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:17,243 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:17,243 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:17,265 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:17,354 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 11:21:17,354 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:21:17,354 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:21:17,356 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:21:17,356 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:21:17,357 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:21:17,357 INFO L146 ILogger]: Start difference. First operand 27 states and 29 transitions. Second operand 3 states. [2019-05-23 11:21:17,601 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:17,601 INFO L146 ILogger]: Finished difference Result 59 states and 64 transitions. [2019-05-23 11:21:17,602 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:21:17,602 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 16 [2019-05-23 11:21:17,602 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:17,603 INFO L146 ILogger]: With dead ends: 59 [2019-05-23 11:21:17,603 INFO L146 ILogger]: Without dead ends: 44 [2019-05-23 11:21:17,604 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 11:21:17,605 INFO L146 ILogger]: Start minimizeSevpa. Operand 44 states. [2019-05-23 11:21:17,613 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 44 to 36. [2019-05-23 11:21:17,614 INFO L146 ILogger]: Start removeUnreachable. Operand 36 states. [2019-05-23 11:21:17,615 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2019-05-23 11:21:17,615 INFO L146 ILogger]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 16 [2019-05-23 11:21:17,616 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:17,617 INFO L146 ILogger]: Abstraction has 36 states and 39 transitions. [2019-05-23 11:21:17,617 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:21:17,618 INFO L146 ILogger]: Start isEmpty. Operand 36 states and 39 transitions. [2019-05-23 11:21:17,618 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 22 [2019-05-23 11:21:17,618 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:17,620 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] [2019-05-23 11:21:17,620 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:17,620 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:17,621 INFO L146 ILogger]: Analyzing trace with hash 673866826, now seen corresponding path program 1 times [2019-05-23 11:21:17,621 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:17,621 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:17,622 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:17,622 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:17,622 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:17,642 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:17,721 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 11:21:17,721 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:17,722 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 11:21:17,744 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:17,789 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:17,791 INFO L146 ILogger]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:21:17,796 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:17,895 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 11:21:17,915 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:17,915 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-05-23 11:21:17,916 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:21:17,916 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:21:17,917 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:21:17,917 INFO L146 ILogger]: Start difference. First operand 36 states and 39 transitions. Second operand 7 states. [2019-05-23 11:21:18,348 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:18,348 INFO L146 ILogger]: Finished difference Result 72 states and 77 transitions. [2019-05-23 11:21:18,349 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:21:18,350 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 21 [2019-05-23 11:21:18,350 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:18,351 INFO L146 ILogger]: With dead ends: 72 [2019-05-23 11:21:18,352 INFO L146 ILogger]: Without dead ends: 49 [2019-05-23 11:21:18,353 INFO L146 ILogger]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:21:18,353 INFO L146 ILogger]: Start minimizeSevpa. Operand 49 states. [2019-05-23 11:21:18,358 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 49 to 41. [2019-05-23 11:21:18,358 INFO L146 ILogger]: Start removeUnreachable. Operand 41 states. [2019-05-23 11:21:18,360 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2019-05-23 11:21:18,360 INFO L146 ILogger]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 21 [2019-05-23 11:21:18,360 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:18,360 INFO L146 ILogger]: Abstraction has 41 states and 44 transitions. [2019-05-23 11:21:18,361 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:21:18,361 INFO L146 ILogger]: Start isEmpty. Operand 41 states and 44 transitions. [2019-05-23 11:21:18,361 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 27 [2019-05-23 11:21:18,362 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:18,362 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:18,362 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:18,362 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:18,363 INFO L146 ILogger]: Analyzing trace with hash -839998570, now seen corresponding path program 2 times [2019-05-23 11:21:18,363 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:18,363 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:18,364 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:18,364 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:18,364 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:18,377 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:18,528 INFO L146 ILogger]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:18,529 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:18,529 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:21:18,554 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:21:18,575 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:21:18,575 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:18,576 INFO L146 ILogger]: Trace formula consists of 48 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:21:18,579 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:18,706 INFO L146 ILogger]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:18,727 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:18,727 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2019-05-23 11:21:18,728 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:21:18,728 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:21:18,729 INFO L146 ILogger]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:21:18,729 INFO L146 ILogger]: Start difference. First operand 41 states and 44 transitions. Second operand 9 states. [2019-05-23 11:21:18,899 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:18,900 INFO L146 ILogger]: Finished difference Result 77 states and 82 transitions. [2019-05-23 11:21:18,900 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-05-23 11:21:18,900 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 26 [2019-05-23 11:21:18,901 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:18,902 INFO L146 ILogger]: With dead ends: 77 [2019-05-23 11:21:18,902 INFO L146 ILogger]: Without dead ends: 54 [2019-05-23 11:21:18,904 INFO L146 ILogger]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:21:18,904 INFO L146 ILogger]: Start minimizeSevpa. Operand 54 states. [2019-05-23 11:21:18,909 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 54 to 46. [2019-05-23 11:21:18,909 INFO L146 ILogger]: Start removeUnreachable. Operand 46 states. [2019-05-23 11:21:18,910 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2019-05-23 11:21:18,911 INFO L146 ILogger]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 26 [2019-05-23 11:21:18,911 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:18,911 INFO L146 ILogger]: Abstraction has 46 states and 49 transitions. [2019-05-23 11:21:18,911 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:21:18,911 INFO L146 ILogger]: Start isEmpty. Operand 46 states and 49 transitions. [2019-05-23 11:21:18,912 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 32 [2019-05-23 11:21:18,912 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:18,912 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:18,913 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:18,913 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:18,913 INFO L146 ILogger]: Analyzing trace with hash 631903178, now seen corresponding path program 3 times [2019-05-23 11:21:18,913 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:18,914 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:18,914 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:18,915 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:18,915 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:18,942 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:19,324 INFO L146 ILogger]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:19,325 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:19,325 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 11:21:19,342 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:21:19,372 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:21:19,373 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:19,373 INFO L146 ILogger]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:21:19,377 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:19,427 INFO L146 ILogger]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:19,451 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:19,451 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2019-05-23 11:21:19,451 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:21:19,452 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:21:19,452 INFO L146 ILogger]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:21:19,452 INFO L146 ILogger]: Start difference. First operand 46 states and 49 transitions. Second operand 11 states. [2019-05-23 11:21:19,811 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:19,812 INFO L146 ILogger]: Finished difference Result 82 states and 87 transitions. [2019-05-23 11:21:19,812 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:21:19,812 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 31 [2019-05-23 11:21:19,813 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:19,814 INFO L146 ILogger]: With dead ends: 82 [2019-05-23 11:21:19,814 INFO L146 ILogger]: Without dead ends: 59 [2019-05-23 11:21:19,815 INFO L146 ILogger]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:21:19,816 INFO L146 ILogger]: Start minimizeSevpa. Operand 59 states. [2019-05-23 11:21:19,820 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 59 to 51. [2019-05-23 11:21:19,820 INFO L146 ILogger]: Start removeUnreachable. Operand 51 states. [2019-05-23 11:21:19,822 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2019-05-23 11:21:19,822 INFO L146 ILogger]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 31 [2019-05-23 11:21:19,823 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:19,823 INFO L146 ILogger]: Abstraction has 51 states and 54 transitions. [2019-05-23 11:21:19,823 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:21:19,823 INFO L146 ILogger]: Start isEmpty. Operand 51 states and 54 transitions. [2019-05-23 11:21:19,824 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 37 [2019-05-23 11:21:19,824 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:19,824 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:19,825 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:19,825 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:19,825 INFO L146 ILogger]: Analyzing trace with hash -498031594, now seen corresponding path program 4 times [2019-05-23 11:21:19,825 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:19,825 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:19,826 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:19,826 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:19,827 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:19,841 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:19,982 INFO L146 ILogger]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:21:19,983 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:19,983 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 11:21:19,993 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:21:20,024 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:21:20,024 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:20,025 INFO L146 ILogger]: Trace formula consists of 48 conjuncts, 22 conjunts are in the unsatisfiable core [2019-05-23 11:21:20,027 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:20,081 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-05-23 11:21:20,082 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:21:20,095 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:21:20,098 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:21:20,098 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2019-05-23 11:21:20,280 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:21:20,281 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 23 treesize of output 46 [2019-05-23 11:21:20,282 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:21:20,328 INFO L146 ILogger]: treesize reduction 24, result has 47.8 percent of original size [2019-05-23 11:21:20,329 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:21:20,329 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2019-05-23 11:21:20,642 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:21:20,643 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 108 [2019-05-23 11:21:20,645 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:21:20,693 INFO L146 ILogger]: treesize reduction 60, result has 38.8 percent of original size [2019-05-23 11:21:20,695 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-05-23 11:21:20,696 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:42, output treesize:38 [2019-05-23 11:21:21,151 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:21:21,153 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 186 [2019-05-23 11:21:21,154 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:21:21,225 INFO L146 ILogger]: treesize reduction 96, result has 36.0 percent of original size [2019-05-23 11:21:21,226 INFO L146 ILogger]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-05-23 11:21:21,227 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:58, output treesize:54 [2019-05-23 11:22:14,883 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:22:14,884 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 100 [2019-05-23 11:22:14,886 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:22:14,920 INFO L146 ILogger]: treesize reduction 36, result has 32.1 percent of original size [2019-05-23 11:22:14,921 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 11:22:14,922 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 6 variables, input treesize:61, output treesize:3 [2019-05-23 11:22:15,008 INFO L146 ILogger]: Checked inductivity of 34 backedges. 13 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:15,037 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:15,037 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17] total 25 [2019-05-23 11:22:15,038 INFO L146 ILogger]: Interpolant automaton has 25 states [2019-05-23 11:22:15,038 INFO L146 ILogger]: Constructing interpolant automaton starting with 25 interpolants. [2019-05-23 11:22:15,039 INFO L146 ILogger]: CoverageRelationStatistics Valid=84, Invalid=510, Unknown=6, NotChecked=0, Total=600 [2019-05-23 11:22:15,041 INFO L146 ILogger]: Start difference. First operand 51 states and 54 transitions. Second operand 25 states.