java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/ai/array-bench/reach_32bit_compound_exp_cong.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/veris.c_NetBSD-libc__loop.i_2.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-1de736e-m [2019-02-14 16:19:08,057 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-02-14 16:19:08,059 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-02-14 16:19:08,070 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-02-14 16:19:08,071 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-02-14 16:19:08,072 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-02-14 16:19:08,073 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-02-14 16:19:08,075 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-02-14 16:19:08,077 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-02-14 16:19:08,078 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-02-14 16:19:08,079 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-02-14 16:19:08,079 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-02-14 16:19:08,080 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-02-14 16:19:08,081 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-02-14 16:19:08,082 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-02-14 16:19:08,083 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-02-14 16:19:08,084 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-02-14 16:19:08,086 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-02-14 16:19:08,088 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-02-14 16:19:08,090 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-02-14 16:19:08,091 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-02-14 16:19:08,092 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-02-14 16:19:08,095 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-02-14 16:19:08,095 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-02-14 16:19:08,096 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-02-14 16:19:08,096 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-02-14 16:19:08,098 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-02-14 16:19:08,098 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-02-14 16:19:08,099 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-02-14 16:19:08,101 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-02-14 16:19:08,101 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-02-14 16:19:08,102 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-02-14 16:19:08,102 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-02-14 16:19:08,102 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-02-14 16:19:08,103 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-02-14 16:19:08,104 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-02-14 16:19:08,104 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_compound_exp_cong.epf [2019-02-14 16:19:08,117 INFO L110 SettingsManager]: Loading preferences was successful [2019-02-14 16:19:08,117 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-02-14 16:19:08,118 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-02-14 16:19:08,118 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-02-14 16:19:08,118 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-02-14 16:19:08,119 INFO L133 SettingsManager]: * User list type=DISABLED [2019-02-14 16:19:08,119 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-02-14 16:19:08,119 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-02-14 16:19:08,119 INFO L133 SettingsManager]: * Explicit value domain=true [2019-02-14 16:19:08,119 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-02-14 16:19:08,120 INFO L133 SettingsManager]: * Octagon Domain=false [2019-02-14 16:19:08,120 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2019-02-14 16:19:08,120 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-02-14 16:19:08,120 INFO L133 SettingsManager]: * Interval Domain=false [2019-02-14 16:19:08,121 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-02-14 16:19:08,121 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-02-14 16:19:08,121 INFO L133 SettingsManager]: * Use SBE=true [2019-02-14 16:19:08,122 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-02-14 16:19:08,122 INFO L133 SettingsManager]: * sizeof long=4 [2019-02-14 16:19:08,122 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-02-14 16:19:08,122 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-02-14 16:19:08,122 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-02-14 16:19:08,123 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-02-14 16:19:08,123 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-02-14 16:19:08,123 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-02-14 16:19:08,123 INFO L133 SettingsManager]: * sizeof long double=12 [2019-02-14 16:19:08,123 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-02-14 16:19:08,124 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-02-14 16:19:08,124 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-02-14 16:19:08,124 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-02-14 16:19:08,124 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-02-14 16:19:08,124 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-02-14 16:19:08,125 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-02-14 16:19:08,125 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-02-14 16:19:08,125 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-02-14 16:19:08,125 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-02-14 16:19:08,125 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-02-14 16:19:08,126 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-02-14 16:19:08,126 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-02-14 16:19:08,126 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-02-14 16:19:08,155 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-02-14 16:19:08,166 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-02-14 16:19:08,170 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-02-14 16:19:08,171 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-02-14 16:19:08,172 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-02-14 16:19:08,173 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/veris.c_NetBSD-libc__loop.i_2.bpl [2019-02-14 16:19:08,173 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/veris.c_NetBSD-libc__loop.i_2.bpl' [2019-02-14 16:19:08,227 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-02-14 16:19:08,229 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-02-14 16:19:08,229 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-02-14 16:19:08,230 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-02-14 16:19:08,230 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-02-14 16:19:08,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "veris.c_NetBSD-libc__loop.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.02 04:19:08" (1/1) ... [2019-02-14 16:19:08,258 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "veris.c_NetBSD-libc__loop.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.02 04:19:08" (1/1) ... [2019-02-14 16:19:08,268 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-02-14 16:19:08,269 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-02-14 16:19:08,269 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-02-14 16:19:08,269 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-02-14 16:19:08,280 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "veris.c_NetBSD-libc__loop.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.02 04:19:08" (1/1) ... [2019-02-14 16:19:08,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "veris.c_NetBSD-libc__loop.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.02 04:19:08" (1/1) ... [2019-02-14 16:19:08,283 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "veris.c_NetBSD-libc__loop.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.02 04:19:08" (1/1) ... [2019-02-14 16:19:08,283 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "veris.c_NetBSD-libc__loop.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.02 04:19:08" (1/1) ... [2019-02-14 16:19:08,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "veris.c_NetBSD-libc__loop.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.02 04:19:08" (1/1) ... [2019-02-14 16:19:08,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "veris.c_NetBSD-libc__loop.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.02 04:19:08" (1/1) ... [2019-02-14 16:19:08,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "veris.c_NetBSD-libc__loop.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.02 04:19:08" (1/1) ... [2019-02-14 16:19:08,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-02-14 16:19:08,294 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-02-14 16:19:08,294 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-02-14 16:19:08,295 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-02-14 16:19:08,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "veris.c_NetBSD-libc__loop.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.02 04:19:08" (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:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-02-14 16:19:08,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-02-14 16:19:08,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-02-14 16:19:08,758 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-02-14 16:19:08,759 INFO L286 CfgBuilder]: Removed 1 assue(true) statements. [2019-02-14 16:19:08,762 INFO L202 PluginConnector]: Adding new model veris.c_NetBSD-libc__loop.i_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 04:19:08 BoogieIcfgContainer [2019-02-14 16:19:08,762 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-02-14 16:19:08,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-02-14 16:19:08,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-02-14 16:19:08,766 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-02-14 16:19:08,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "veris.c_NetBSD-libc__loop.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.02 04:19:08" (1/2) ... [2019-02-14 16:19:08,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef98061 and model type veris.c_NetBSD-libc__loop.i_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 04:19:08, skipping insertion in model container [2019-02-14 16:19:08,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "veris.c_NetBSD-libc__loop.i_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 04:19:08" (2/2) ... [2019-02-14 16:19:08,770 INFO L112 eAbstractionObserver]: Analyzing ICFG veris.c_NetBSD-libc__loop.i_2.bpl [2019-02-14 16:19:08,780 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-02-14 16:19:08,788 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-02-14 16:19:08,799 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-02-14 16:19:08,828 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-02-14 16:19:08,829 INFO L383 AbstractCegarLoop]: Hoare is true [2019-02-14 16:19:08,829 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-02-14 16:19:08,829 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-02-14 16:19:08,829 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-02-14 16:19:08,829 INFO L387 AbstractCegarLoop]: Difference is false [2019-02-14 16:19:08,830 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-02-14 16:19:08,830 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-02-14 16:19:08,845 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2019-02-14 16:19:08,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-02-14 16:19:08,851 INFO L394 BasicCegarLoop]: Found error trace [2019-02-14 16:19:08,852 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-02-14 16:19:08,855 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-02-14 16:19:08,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-14 16:19:08,861 INFO L82 PathProgramCache]: Analyzing trace with hash 925701, now seen corresponding path program 1 times [2019-02-14 16:19:08,864 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-14 16:19:08,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-14 16:19:08,918 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-14 16:19:08,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-14 16:19:08,918 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-14 16:19:08,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-14 16:19:09,166 INFO L273 TraceCheckUtils]: 0: Hoare triple {10#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];~tmp.base, ~tmp.offset := 0, 0;havoc main_#res;havoc main_#t~ret2, main_~#pathbuf~6.base, main_~#pathbuf~6.offset, main_~bound~6.base, main_~bound~6.offset;#Ultimate.alloc_old_#length, #Ultimate.alloc_old_#valid := #length, #valid;#Ultimate.alloc_~size := 8;havoc #Ultimate.alloc_#res.base, #Ultimate.alloc_#res.offset;havoc #valid, #length;assume #Ultimate.alloc_old_#valid[#Ultimate.alloc_#res.base] == 0;assume #valid == #Ultimate.alloc_old_#valid[#Ultimate.alloc_#res.base := 1];assume #Ultimate.alloc_#res.offset == 0;assume #Ultimate.alloc_#res.base != 0;assume #length == #Ultimate.alloc_old_#length[#Ultimate.alloc_#res.base := #Ultimate.alloc_~size];main_~#pathbuf~6.base, main_~#pathbuf~6.offset := #Ultimate.alloc_#res.base, #Ultimate.alloc_#res.offset;main_~bound~6.base, main_~bound~6.offset := main_~#pathbuf~6.base, main_~#pathbuf~6.offset + 8 - 4;~tmp.base, ~tmp.offset := main_~#pathbuf~6.base, main_~#pathbuf~6.offset + 8 - 4;glob2_#in~pathbuf.base, glob2_#in~pathbuf.offset, glob2_#in~pathlim.base, glob2_#in~pathlim.offset := main_~#pathbuf~6.base, main_~#pathbuf~6.offset, main_~bound~6.base, main_~bound~6.offset;havoc glob2_#res;havoc glob2_#t~post0.base, glob2_#t~post0.offset, glob2_~pathbuf.base, glob2_~pathbuf.offset, glob2_~pathlim.base, glob2_~pathlim.offset, glob2_~p~4.base, glob2_~p~4.offset;glob2_~pathbuf.base, glob2_~pathbuf.offset := glob2_#in~pathbuf.base, glob2_#in~pathbuf.offset;glob2_~pathlim.base, glob2_~pathlim.offset := glob2_#in~pathlim.base, glob2_#in~pathlim.offset;havoc glob2_~p~4.base, glob2_~p~4.offset;glob2_~p~4.base, glob2_~p~4.offset := glob2_~pathbuf.base, glob2_~pathbuf.offset; {12#(and (<= (+ ULTIMATE.start_glob2_~p~4.offset 4) ~tmp.offset) (= ~tmp.base ULTIMATE.start_glob2_~p~4.base))} is VALID [2019-02-14 16:19:09,181 INFO L273 TraceCheckUtils]: 1: Hoare triple {12#(and (<= (+ ULTIMATE.start_glob2_~p~4.offset 4) ~tmp.offset) (= ~tmp.base ULTIMATE.start_glob2_~p~4.base))} assume !!(glob2_~p~4.base == glob2_~pathlim.base && glob2_~p~4.offset <= glob2_~pathlim.offset);__VERIFIER_assert_#in~cond := (if glob2_~p~4.base == ~tmp.base && glob2_~p~4.offset <= ~tmp.offset then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {13#(= ULTIMATE.start___VERIFIER_assert_~cond 1)} is VALID [2019-02-14 16:19:09,190 INFO L273 TraceCheckUtils]: 2: Hoare triple {13#(= ULTIMATE.start___VERIFIER_assert_~cond 1)} assume __VERIFIER_assert_~cond == 0;assume !false; {11#false} is VALID [2019-02-14 16:19:09,191 INFO L273 TraceCheckUtils]: 3: Hoare triple {11#false} assume !false; {11#false} is VALID [2019-02-14 16:19:09,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-14 16:19:09,195 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-02-14 16:19:09,196 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-02-14 16:19:09,196 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-02-14 16:19:09,202 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-02-14 16:19:09,204 INFO L84 Accepts]: Finished accepts. word is accepted. [2019-02-14 16:19:09,208 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2019-02-14 16:19:09,239 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 4 edges. 4 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2019-02-14 16:19:09,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-02-14 16:19:09,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-02-14 16:19:09,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-02-14 16:19:09,251 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 4 states. [2019-02-14 16:19:09,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-14 16:19:09,583 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2019-02-14 16:19:09,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-02-14 16:19:09,584 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-02-14 16:19:09,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-02-14 16:19:09,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-02-14 16:19:09,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2019-02-14 16:19:09,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-02-14 16:19:09,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2019-02-14 16:19:09,608 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 13 transitions. [2019-02-14 16:19:09,656 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2019-02-14 16:19:09,666 INFO L225 Difference]: With dead ends: 12 [2019-02-14 16:19:09,667 INFO L226 Difference]: Without dead ends: 8 [2019-02-14 16:19:09,670 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-02-14 16:19:09,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-02-14 16:19:09,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2019-02-14 16:19:09,825 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2019-02-14 16:19:09,826 INFO L82 GeneralOperation]: Start isEquivalent. First operand 8 states. Second operand 7 states. [2019-02-14 16:19:09,827 INFO L74 IsIncluded]: Start isIncluded. First operand 8 states. Second operand 7 states. [2019-02-14 16:19:09,827 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 7 states. [2019-02-14 16:19:09,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-14 16:19:09,830 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2019-02-14 16:19:09,831 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-02-14 16:19:09,831 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-02-14 16:19:09,831 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2019-02-14 16:19:09,832 INFO L74 IsIncluded]: Start isIncluded. First operand 7 states. Second operand 8 states. [2019-02-14 16:19:09,832 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 8 states. [2019-02-14 16:19:09,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-14 16:19:09,835 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2019-02-14 16:19:09,835 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-02-14 16:19:09,836 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-02-14 16:19:09,836 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2019-02-14 16:19:09,836 INFO L88 GeneralOperation]: Finished isEquivalent. [2019-02-14 16:19:09,837 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2019-02-14 16:19:09,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-02-14 16:19:09,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-02-14 16:19:09,841 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2019-02-14 16:19:09,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-02-14 16:19:09,841 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-02-14 16:19:09,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-02-14 16:19:09,842 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-02-14 16:19:09,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-02-14 16:19:09,843 INFO L394 BasicCegarLoop]: Found error trace [2019-02-14 16:19:09,843 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2019-02-14 16:19:09,844 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-02-14 16:19:09,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-14 16:19:09,844 INFO L82 PathProgramCache]: Analyzing trace with hash 889531649, now seen corresponding path program 1 times [2019-02-14 16:19:09,844 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-14 16:19:09,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-14 16:19:09,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-14 16:19:09,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-14 16:19:09,846 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-14 16:19:09,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-14 16:19:10,501 INFO L273 TraceCheckUtils]: 0: Hoare triple {65#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];~tmp.base, ~tmp.offset := 0, 0;havoc main_#res;havoc main_#t~ret2, main_~#pathbuf~6.base, main_~#pathbuf~6.offset, main_~bound~6.base, main_~bound~6.offset;#Ultimate.alloc_old_#length, #Ultimate.alloc_old_#valid := #length, #valid;#Ultimate.alloc_~size := 8;havoc #Ultimate.alloc_#res.base, #Ultimate.alloc_#res.offset;havoc #valid, #length;assume #Ultimate.alloc_old_#valid[#Ultimate.alloc_#res.base] == 0;assume #valid == #Ultimate.alloc_old_#valid[#Ultimate.alloc_#res.base := 1];assume #Ultimate.alloc_#res.offset == 0;assume #Ultimate.alloc_#res.base != 0;assume #length == #Ultimate.alloc_old_#length[#Ultimate.alloc_#res.base := #Ultimate.alloc_~size];main_~#pathbuf~6.base, main_~#pathbuf~6.offset := #Ultimate.alloc_#res.base, #Ultimate.alloc_#res.offset;main_~bound~6.base, main_~bound~6.offset := main_~#pathbuf~6.base, main_~#pathbuf~6.offset + 8 - 4;~tmp.base, ~tmp.offset := main_~#pathbuf~6.base, main_~#pathbuf~6.offset + 8 - 4;glob2_#in~pathbuf.base, glob2_#in~pathbuf.offset, glob2_#in~pathlim.base, glob2_#in~pathlim.offset := main_~#pathbuf~6.base, main_~#pathbuf~6.offset, main_~bound~6.base, main_~bound~6.offset;havoc glob2_#res;havoc glob2_#t~post0.base, glob2_#t~post0.offset, glob2_~pathbuf.base, glob2_~pathbuf.offset, glob2_~pathlim.base, glob2_~pathlim.offset, glob2_~p~4.base, glob2_~p~4.offset;glob2_~pathbuf.base, glob2_~pathbuf.offset := glob2_#in~pathbuf.base, glob2_#in~pathbuf.offset;glob2_~pathlim.base, glob2_~pathlim.offset := glob2_#in~pathlim.base, glob2_#in~pathlim.offset;havoc glob2_~p~4.base, glob2_~p~4.offset;glob2_~p~4.base, glob2_~p~4.offset := glob2_~pathbuf.base, glob2_~pathbuf.offset; {67#(and (<= (+ ULTIMATE.start_glob2_~p~4.offset 4) ~tmp.offset) (= ~tmp.base ULTIMATE.start_glob2_~p~4.base))} is VALID [2019-02-14 16:19:10,505 INFO L273 TraceCheckUtils]: 1: Hoare triple {67#(and (<= (+ ULTIMATE.start_glob2_~p~4.offset 4) ~tmp.offset) (= ~tmp.base ULTIMATE.start_glob2_~p~4.base))} assume !!(glob2_~p~4.base == glob2_~pathlim.base && glob2_~p~4.offset <= glob2_~pathlim.offset);__VERIFIER_assert_#in~cond := (if glob2_~p~4.base == ~tmp.base && glob2_~p~4.offset <= ~tmp.offset then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {68#(and (<= (+ ULTIMATE.start_glob2_~p~4.offset 4) ~tmp.offset) (or (= 0 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start___VERIFIER_assert_~cond 1)) (= ~tmp.base ULTIMATE.start_glob2_~p~4.base))} is VALID [2019-02-14 16:19:10,507 INFO L273 TraceCheckUtils]: 2: Hoare triple {68#(and (<= (+ ULTIMATE.start_glob2_~p~4.offset 4) ~tmp.offset) (or (= 0 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start___VERIFIER_assert_~cond 1)) (= ~tmp.base ULTIMATE.start_glob2_~p~4.base))} assume !(__VERIFIER_assert_~cond == 0);write~int_old_#memory_int := #memory_int;write~int_#value, write~int_#ptr.base, write~int_#ptr.offset, write~int_#sizeOfWrittenType := 1, glob2_~p~4.base, glob2_~p~4.offset, 4;havoc #memory_int;assume #memory_int == write~int_old_#memory_int[write~int_#ptr.base,write~int_#ptr.offset := write~int_#value];glob2_#t~post0.base, glob2_#t~post0.offset := glob2_~p~4.base, glob2_~p~4.offset;glob2_~p~4.base, glob2_~p~4.offset := glob2_#t~post0.base, glob2_#t~post0.offset + 4;havoc glob2_#t~post0.base, glob2_#t~post0.offset; {69#(and (<= ULTIMATE.start_glob2_~p~4.offset ~tmp.offset) (= ~tmp.base ULTIMATE.start_glob2_~p~4.base))} is VALID [2019-02-14 16:19:10,508 INFO L273 TraceCheckUtils]: 3: Hoare triple {69#(and (<= ULTIMATE.start_glob2_~p~4.offset ~tmp.offset) (= ~tmp.base ULTIMATE.start_glob2_~p~4.base))} assume !!(glob2_~p~4.base == glob2_~pathlim.base && glob2_~p~4.offset <= glob2_~pathlim.offset);__VERIFIER_assert_#in~cond := (if glob2_~p~4.base == ~tmp.base && glob2_~p~4.offset <= ~tmp.offset then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {70#(not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))} is VALID [2019-02-14 16:19:10,509 INFO L273 TraceCheckUtils]: 4: Hoare triple {70#(not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))} assume __VERIFIER_assert_~cond == 0;assume !false; {66#false} is VALID [2019-02-14 16:19:10,509 INFO L273 TraceCheckUtils]: 5: Hoare triple {66#false} assume !false; {66#false} is VALID [2019-02-14 16:19:10,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-14 16:19:10,511 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-14 16:19:10,511 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-02-14 16:19:10,512 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 7 with the following transitions: [2019-02-14 16:19:10,514 INFO L207 CegarAbsIntRunner]: [0], [2], [6], [8], [10] [2019-02-14 16:19:10,547 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-02-14 16:19:10,547 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-02-14 16:19:10,969 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-02-14 16:19:10,970 INFO L272 AbstractInterpreter]: Visited 5 different actions 17 times. Merged at 4 different actions 12 times. Widened at 1 different actions 1 times. Performed 268 root evaluator evaluations with a maximum evaluation depth of 5. Performed 268 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-02-14 16:19:10,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-14 16:19:10,976 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-02-14 16:19:10,976 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-14 16:19:10,977 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG 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 [2019-02-14 16:19:10,986 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-14 16:19:10,987 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-02-14 16:19:11,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-14 16:19:11,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-14 16:19:11,055 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-02-14 16:19:11,522 WARN L181 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 12 [2019-02-14 16:19:11,776 INFO L273 TraceCheckUtils]: 0: Hoare triple {65#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];~tmp.base, ~tmp.offset := 0, 0;havoc main_#res;havoc main_#t~ret2, main_~#pathbuf~6.base, main_~#pathbuf~6.offset, main_~bound~6.base, main_~bound~6.offset;#Ultimate.alloc_old_#length, #Ultimate.alloc_old_#valid := #length, #valid;#Ultimate.alloc_~size := 8;havoc #Ultimate.alloc_#res.base, #Ultimate.alloc_#res.offset;havoc #valid, #length;assume #Ultimate.alloc_old_#valid[#Ultimate.alloc_#res.base] == 0;assume #valid == #Ultimate.alloc_old_#valid[#Ultimate.alloc_#res.base := 1];assume #Ultimate.alloc_#res.offset == 0;assume #Ultimate.alloc_#res.base != 0;assume #length == #Ultimate.alloc_old_#length[#Ultimate.alloc_#res.base := #Ultimate.alloc_~size];main_~#pathbuf~6.base, main_~#pathbuf~6.offset := #Ultimate.alloc_#res.base, #Ultimate.alloc_#res.offset;main_~bound~6.base, main_~bound~6.offset := main_~#pathbuf~6.base, main_~#pathbuf~6.offset + 8 - 4;~tmp.base, ~tmp.offset := main_~#pathbuf~6.base, main_~#pathbuf~6.offset + 8 - 4;glob2_#in~pathbuf.base, glob2_#in~pathbuf.offset, glob2_#in~pathlim.base, glob2_#in~pathlim.offset := main_~#pathbuf~6.base, main_~#pathbuf~6.offset, main_~bound~6.base, main_~bound~6.offset;havoc glob2_#res;havoc glob2_#t~post0.base, glob2_#t~post0.offset, glob2_~pathbuf.base, glob2_~pathbuf.offset, glob2_~pathlim.base, glob2_~pathlim.offset, glob2_~p~4.base, glob2_~p~4.offset;glob2_~pathbuf.base, glob2_~pathbuf.offset := glob2_#in~pathbuf.base, glob2_#in~pathbuf.offset;glob2_~pathlim.base, glob2_~pathlim.offset := glob2_#in~pathlim.base, glob2_#in~pathlim.offset;havoc glob2_~p~4.base, glob2_~p~4.offset;glob2_~p~4.base, glob2_~p~4.offset := glob2_~pathbuf.base, glob2_~pathbuf.offset; {67#(and (<= (+ ULTIMATE.start_glob2_~p~4.offset 4) ~tmp.offset) (= ~tmp.base ULTIMATE.start_glob2_~p~4.base))} is VALID [2019-02-14 16:19:11,782 INFO L273 TraceCheckUtils]: 1: Hoare triple {67#(and (<= (+ ULTIMATE.start_glob2_~p~4.offset 4) ~tmp.offset) (= ~tmp.base ULTIMATE.start_glob2_~p~4.base))} assume !!(glob2_~p~4.base == glob2_~pathlim.base && glob2_~p~4.offset <= glob2_~pathlim.offset);__VERIFIER_assert_#in~cond := (if glob2_~p~4.base == ~tmp.base && glob2_~p~4.offset <= ~tmp.offset then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {77#(and (<= (+ ULTIMATE.start_glob2_~p~4.offset 4) ~tmp.offset) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ~tmp.base ULTIMATE.start_glob2_~p~4.base))} is VALID [2019-02-14 16:19:11,783 INFO L273 TraceCheckUtils]: 2: Hoare triple {77#(and (<= (+ ULTIMATE.start_glob2_~p~4.offset 4) ~tmp.offset) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ~tmp.base ULTIMATE.start_glob2_~p~4.base))} assume !(__VERIFIER_assert_~cond == 0);write~int_old_#memory_int := #memory_int;write~int_#value, write~int_#ptr.base, write~int_#ptr.offset, write~int_#sizeOfWrittenType := 1, glob2_~p~4.base, glob2_~p~4.offset, 4;havoc #memory_int;assume #memory_int == write~int_old_#memory_int[write~int_#ptr.base,write~int_#ptr.offset := write~int_#value];glob2_#t~post0.base, glob2_#t~post0.offset := glob2_~p~4.base, glob2_~p~4.offset;glob2_~p~4.base, glob2_~p~4.offset := glob2_#t~post0.base, glob2_#t~post0.offset + 4;havoc glob2_#t~post0.base, glob2_#t~post0.offset; {69#(and (<= ULTIMATE.start_glob2_~p~4.offset ~tmp.offset) (= ~tmp.base ULTIMATE.start_glob2_~p~4.base))} is VALID [2019-02-14 16:19:11,784 INFO L273 TraceCheckUtils]: 3: Hoare triple {69#(and (<= ULTIMATE.start_glob2_~p~4.offset ~tmp.offset) (= ~tmp.base ULTIMATE.start_glob2_~p~4.base))} assume !!(glob2_~p~4.base == glob2_~pathlim.base && glob2_~p~4.offset <= glob2_~pathlim.offset);__VERIFIER_assert_#in~cond := (if glob2_~p~4.base == ~tmp.base && glob2_~p~4.offset <= ~tmp.offset then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {84#(= 1 ULTIMATE.start___VERIFIER_assert_~cond)} is VALID [2019-02-14 16:19:11,785 INFO L273 TraceCheckUtils]: 4: Hoare triple {84#(= 1 ULTIMATE.start___VERIFIER_assert_~cond)} assume __VERIFIER_assert_~cond == 0;assume !false; {66#false} is VALID [2019-02-14 16:19:11,785 INFO L273 TraceCheckUtils]: 5: Hoare triple {66#false} assume !false; {66#false} is VALID [2019-02-14 16:19:11,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-14 16:19:11,786 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-02-14 16:19:12,044 WARN L181 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2019-02-14 16:19:12,092 INFO L273 TraceCheckUtils]: 5: Hoare triple {66#false} assume !false; {66#false} is VALID [2019-02-14 16:19:12,105 INFO L273 TraceCheckUtils]: 4: Hoare triple {70#(not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))} assume __VERIFIER_assert_~cond == 0;assume !false; {66#false} is VALID [2019-02-14 16:19:12,118 INFO L273 TraceCheckUtils]: 3: Hoare triple {69#(and (<= ULTIMATE.start_glob2_~p~4.offset ~tmp.offset) (= ~tmp.base ULTIMATE.start_glob2_~p~4.base))} assume !!(glob2_~p~4.base == glob2_~pathlim.base && glob2_~p~4.offset <= glob2_~pathlim.offset);__VERIFIER_assert_#in~cond := (if glob2_~p~4.base == ~tmp.base && glob2_~p~4.offset <= ~tmp.offset then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {70#(not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))} is VALID [2019-02-14 16:19:12,133 INFO L273 TraceCheckUtils]: 2: Hoare triple {100#(or (and (< (+ ULTIMATE.start_glob2_~p~4.offset 3) ~tmp.offset) (= ULTIMATE.start_glob2_~p~4.base ~tmp.base)) (= 0 ULTIMATE.start___VERIFIER_assert_~cond))} assume !(__VERIFIER_assert_~cond == 0);write~int_old_#memory_int := #memory_int;write~int_#value, write~int_#ptr.base, write~int_#ptr.offset, write~int_#sizeOfWrittenType := 1, glob2_~p~4.base, glob2_~p~4.offset, 4;havoc #memory_int;assume #memory_int == write~int_old_#memory_int[write~int_#ptr.base,write~int_#ptr.offset := write~int_#value];glob2_#t~post0.base, glob2_#t~post0.offset := glob2_~p~4.base, glob2_~p~4.offset;glob2_~p~4.base, glob2_~p~4.offset := glob2_#t~post0.base, glob2_#t~post0.offset + 4;havoc glob2_#t~post0.base, glob2_#t~post0.offset; {69#(and (<= ULTIMATE.start_glob2_~p~4.offset ~tmp.offset) (= ~tmp.base ULTIMATE.start_glob2_~p~4.base))} is VALID [2019-02-14 16:19:12,144 INFO L273 TraceCheckUtils]: 1: Hoare triple {104#(or (< (+ ULTIMATE.start_glob2_~p~4.offset 3) ~tmp.offset) (not (= ULTIMATE.start_glob2_~p~4.base ~tmp.base)) (< ~tmp.offset ULTIMATE.start_glob2_~p~4.offset))} assume !!(glob2_~p~4.base == glob2_~pathlim.base && glob2_~p~4.offset <= glob2_~pathlim.offset);__VERIFIER_assert_#in~cond := (if glob2_~p~4.base == ~tmp.base && glob2_~p~4.offset <= ~tmp.offset then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {100#(or (and (< (+ ULTIMATE.start_glob2_~p~4.offset 3) ~tmp.offset) (= ULTIMATE.start_glob2_~p~4.base ~tmp.base)) (= 0 ULTIMATE.start___VERIFIER_assert_~cond))} is VALID [2019-02-14 16:19:12,157 INFO L273 TraceCheckUtils]: 0: Hoare triple {65#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];~tmp.base, ~tmp.offset := 0, 0;havoc main_#res;havoc main_#t~ret2, main_~#pathbuf~6.base, main_~#pathbuf~6.offset, main_~bound~6.base, main_~bound~6.offset;#Ultimate.alloc_old_#length, #Ultimate.alloc_old_#valid := #length, #valid;#Ultimate.alloc_~size := 8;havoc #Ultimate.alloc_#res.base, #Ultimate.alloc_#res.offset;havoc #valid, #length;assume #Ultimate.alloc_old_#valid[#Ultimate.alloc_#res.base] == 0;assume #valid == #Ultimate.alloc_old_#valid[#Ultimate.alloc_#res.base := 1];assume #Ultimate.alloc_#res.offset == 0;assume #Ultimate.alloc_#res.base != 0;assume #length == #Ultimate.alloc_old_#length[#Ultimate.alloc_#res.base := #Ultimate.alloc_~size];main_~#pathbuf~6.base, main_~#pathbuf~6.offset := #Ultimate.alloc_#res.base, #Ultimate.alloc_#res.offset;main_~bound~6.base, main_~bound~6.offset := main_~#pathbuf~6.base, main_~#pathbuf~6.offset + 8 - 4;~tmp.base, ~tmp.offset := main_~#pathbuf~6.base, main_~#pathbuf~6.offset + 8 - 4;glob2_#in~pathbuf.base, glob2_#in~pathbuf.offset, glob2_#in~pathlim.base, glob2_#in~pathlim.offset := main_~#pathbuf~6.base, main_~#pathbuf~6.offset, main_~bound~6.base, main_~bound~6.offset;havoc glob2_#res;havoc glob2_#t~post0.base, glob2_#t~post0.offset, glob2_~pathbuf.base, glob2_~pathbuf.offset, glob2_~pathlim.base, glob2_~pathlim.offset, glob2_~p~4.base, glob2_~p~4.offset;glob2_~pathbuf.base, glob2_~pathbuf.offset := glob2_#in~pathbuf.base, glob2_#in~pathbuf.offset;glob2_~pathlim.base, glob2_~pathlim.offset := glob2_#in~pathlim.base, glob2_#in~pathlim.offset;havoc glob2_~p~4.base, glob2_~p~4.offset;glob2_~p~4.base, glob2_~p~4.offset := glob2_~pathbuf.base, glob2_~pathbuf.offset; {104#(or (< (+ ULTIMATE.start_glob2_~p~4.offset 3) ~tmp.offset) (not (= ULTIMATE.start_glob2_~p~4.base ~tmp.base)) (< ~tmp.offset ULTIMATE.start_glob2_~p~4.offset))} is VALID [2019-02-14 16:19:12,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-14 16:19:12,192 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-02-14 16:19:12,193 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2019-02-14 16:19:12,194 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-02-14 16:19:12,195 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 6 [2019-02-14 16:19:12,195 INFO L84 Accepts]: Finished accepts. word is accepted. [2019-02-14 16:19:12,195 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 8 states. [2019-02-14 16:19:12,264 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2019-02-14 16:19:12,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-02-14 16:19:12,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-02-14 16:19:12,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-02-14 16:19:12,265 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 8 states. [2019-02-14 16:19:12,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-14 16:19:12,477 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-02-14 16:19:12,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-02-14 16:19:12,477 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 6 [2019-02-14 16:19:12,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-02-14 16:19:12,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-02-14 16:19:12,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 12 transitions. [2019-02-14 16:19:12,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-02-14 16:19:12,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 12 transitions. [2019-02-14 16:19:12,481 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states and 12 transitions. [2019-02-14 16:19:12,517 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2019-02-14 16:19:12,518 INFO L225 Difference]: With dead ends: 12 [2019-02-14 16:19:12,518 INFO L226 Difference]: Without dead ends: 10 [2019-02-14 16:19:12,520 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2019-02-14 16:19:12,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-02-14 16:19:12,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2019-02-14 16:19:12,541 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2019-02-14 16:19:12,541 INFO L82 GeneralOperation]: Start isEquivalent. First operand 10 states. Second operand 9 states. [2019-02-14 16:19:12,541 INFO L74 IsIncluded]: Start isIncluded. First operand 10 states. Second operand 9 states. [2019-02-14 16:19:12,541 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 9 states. [2019-02-14 16:19:12,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-14 16:19:12,542 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2019-02-14 16:19:12,543 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2019-02-14 16:19:12,543 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-02-14 16:19:12,543 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2019-02-14 16:19:12,543 INFO L74 IsIncluded]: Start isIncluded. First operand 9 states. Second operand 10 states. [2019-02-14 16:19:12,543 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 10 states. [2019-02-14 16:19:12,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-14 16:19:12,545 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2019-02-14 16:19:12,545 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2019-02-14 16:19:12,545 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-02-14 16:19:12,546 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2019-02-14 16:19:12,546 INFO L88 GeneralOperation]: Finished isEquivalent. [2019-02-14 16:19:12,546 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2019-02-14 16:19:12,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-02-14 16:19:12,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-02-14 16:19:12,547 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2019-02-14 16:19:12,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-02-14 16:19:12,548 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-02-14 16:19:12,548 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-02-14 16:19:12,548 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-02-14 16:19:12,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-02-14 16:19:12,548 INFO L394 BasicCegarLoop]: Found error trace [2019-02-14 16:19:12,548 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2019-02-14 16:19:12,549 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-02-14 16:19:12,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-14 16:19:12,549 INFO L82 PathProgramCache]: Analyzing trace with hash 141355773, now seen corresponding path program 2 times [2019-02-14 16:19:12,549 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-14 16:19:12,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-14 16:19:12,550 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-14 16:19:12,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-14 16:19:12,551 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-14 16:19:12,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-14 16:19:12,703 INFO L273 TraceCheckUtils]: 0: Hoare triple {166#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];~tmp.base, ~tmp.offset := 0, 0;havoc main_#res;havoc main_#t~ret2, main_~#pathbuf~6.base, main_~#pathbuf~6.offset, main_~bound~6.base, main_~bound~6.offset;#Ultimate.alloc_old_#length, #Ultimate.alloc_old_#valid := #length, #valid;#Ultimate.alloc_~size := 8;havoc #Ultimate.alloc_#res.base, #Ultimate.alloc_#res.offset;havoc #valid, #length;assume #Ultimate.alloc_old_#valid[#Ultimate.alloc_#res.base] == 0;assume #valid == #Ultimate.alloc_old_#valid[#Ultimate.alloc_#res.base := 1];assume #Ultimate.alloc_#res.offset == 0;assume #Ultimate.alloc_#res.base != 0;assume #length == #Ultimate.alloc_old_#length[#Ultimate.alloc_#res.base := #Ultimate.alloc_~size];main_~#pathbuf~6.base, main_~#pathbuf~6.offset := #Ultimate.alloc_#res.base, #Ultimate.alloc_#res.offset;main_~bound~6.base, main_~bound~6.offset := main_~#pathbuf~6.base, main_~#pathbuf~6.offset + 8 - 4;~tmp.base, ~tmp.offset := main_~#pathbuf~6.base, main_~#pathbuf~6.offset + 8 - 4;glob2_#in~pathbuf.base, glob2_#in~pathbuf.offset, glob2_#in~pathlim.base, glob2_#in~pathlim.offset := main_~#pathbuf~6.base, main_~#pathbuf~6.offset, main_~bound~6.base, main_~bound~6.offset;havoc glob2_#res;havoc glob2_#t~post0.base, glob2_#t~post0.offset, glob2_~pathbuf.base, glob2_~pathbuf.offset, glob2_~pathlim.base, glob2_~pathlim.offset, glob2_~p~4.base, glob2_~p~4.offset;glob2_~pathbuf.base, glob2_~pathbuf.offset := glob2_#in~pathbuf.base, glob2_#in~pathbuf.offset;glob2_~pathlim.base, glob2_~pathlim.offset := glob2_#in~pathlim.base, glob2_#in~pathlim.offset;havoc glob2_~p~4.base, glob2_~p~4.offset;glob2_~p~4.base, glob2_~p~4.offset := glob2_~pathbuf.base, glob2_~pathbuf.offset; {168#(<= ULTIMATE.start_glob2_~pathlim.offset (+ ULTIMATE.start_glob2_~p~4.offset 4))} is VALID [2019-02-14 16:19:12,703 INFO L273 TraceCheckUtils]: 1: Hoare triple {168#(<= ULTIMATE.start_glob2_~pathlim.offset (+ ULTIMATE.start_glob2_~p~4.offset 4))} assume !!(glob2_~p~4.base == glob2_~pathlim.base && glob2_~p~4.offset <= glob2_~pathlim.offset);__VERIFIER_assert_#in~cond := (if glob2_~p~4.base == ~tmp.base && glob2_~p~4.offset <= ~tmp.offset then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {168#(<= ULTIMATE.start_glob2_~pathlim.offset (+ ULTIMATE.start_glob2_~p~4.offset 4))} is VALID [2019-02-14 16:19:12,705 INFO L273 TraceCheckUtils]: 2: Hoare triple {168#(<= ULTIMATE.start_glob2_~pathlim.offset (+ ULTIMATE.start_glob2_~p~4.offset 4))} assume !(__VERIFIER_assert_~cond == 0);write~int_old_#memory_int := #memory_int;write~int_#value, write~int_#ptr.base, write~int_#ptr.offset, write~int_#sizeOfWrittenType := 1, glob2_~p~4.base, glob2_~p~4.offset, 4;havoc #memory_int;assume #memory_int == write~int_old_#memory_int[write~int_#ptr.base,write~int_#ptr.offset := write~int_#value];glob2_#t~post0.base, glob2_#t~post0.offset := glob2_~p~4.base, glob2_~p~4.offset;glob2_~p~4.base, glob2_~p~4.offset := glob2_#t~post0.base, glob2_#t~post0.offset + 4;havoc glob2_#t~post0.base, glob2_#t~post0.offset; {169#(<= ULTIMATE.start_glob2_~pathlim.offset ULTIMATE.start_glob2_~p~4.offset)} is VALID [2019-02-14 16:19:12,705 INFO L273 TraceCheckUtils]: 3: Hoare triple {169#(<= ULTIMATE.start_glob2_~pathlim.offset ULTIMATE.start_glob2_~p~4.offset)} assume !!(glob2_~p~4.base == glob2_~pathlim.base && glob2_~p~4.offset <= glob2_~pathlim.offset);__VERIFIER_assert_#in~cond := (if glob2_~p~4.base == ~tmp.base && glob2_~p~4.offset <= ~tmp.offset then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {169#(<= ULTIMATE.start_glob2_~pathlim.offset ULTIMATE.start_glob2_~p~4.offset)} is VALID [2019-02-14 16:19:12,707 INFO L273 TraceCheckUtils]: 4: Hoare triple {169#(<= ULTIMATE.start_glob2_~pathlim.offset ULTIMATE.start_glob2_~p~4.offset)} assume !(__VERIFIER_assert_~cond == 0);write~int_old_#memory_int := #memory_int;write~int_#value, write~int_#ptr.base, write~int_#ptr.offset, write~int_#sizeOfWrittenType := 1, glob2_~p~4.base, glob2_~p~4.offset, 4;havoc #memory_int;assume #memory_int == write~int_old_#memory_int[write~int_#ptr.base,write~int_#ptr.offset := write~int_#value];glob2_#t~post0.base, glob2_#t~post0.offset := glob2_~p~4.base, glob2_~p~4.offset;glob2_~p~4.base, glob2_~p~4.offset := glob2_#t~post0.base, glob2_#t~post0.offset + 4;havoc glob2_#t~post0.base, glob2_#t~post0.offset; {170#(<= (+ ULTIMATE.start_glob2_~pathlim.offset 4) ULTIMATE.start_glob2_~p~4.offset)} is VALID [2019-02-14 16:19:12,708 INFO L273 TraceCheckUtils]: 5: Hoare triple {170#(<= (+ ULTIMATE.start_glob2_~pathlim.offset 4) ULTIMATE.start_glob2_~p~4.offset)} assume !!(glob2_~p~4.base == glob2_~pathlim.base && glob2_~p~4.offset <= glob2_~pathlim.offset);__VERIFIER_assert_#in~cond := (if glob2_~p~4.base == ~tmp.base && glob2_~p~4.offset <= ~tmp.offset then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {167#false} is VALID [2019-02-14 16:19:12,708 INFO L273 TraceCheckUtils]: 6: Hoare triple {167#false} assume __VERIFIER_assert_~cond == 0;assume !false; {167#false} is VALID [2019-02-14 16:19:12,709 INFO L273 TraceCheckUtils]: 7: Hoare triple {167#false} assume !false; {167#false} is VALID [2019-02-14 16:19:12,710 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-14 16:19:12,710 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-02-14 16:19:12,710 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-02-14 16:19:12,710 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-02-14 16:19:12,711 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-02-14 16:19:12,711 INFO L84 Accepts]: Finished accepts. word is accepted. [2019-02-14 16:19:12,711 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2019-02-14 16:19:12,744 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 8 edges. 8 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2019-02-14 16:19:12,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-02-14 16:19:12,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-02-14 16:19:12,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-02-14 16:19:12,745 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2019-02-14 16:19:12,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-14 16:19:12,815 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2019-02-14 16:19:12,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-02-14 16:19:12,815 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-02-14 16:19:12,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-02-14 16:19:12,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-02-14 16:19:12,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 10 transitions. [2019-02-14 16:19:12,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-02-14 16:19:12,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 10 transitions. [2019-02-14 16:19:12,818 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 10 transitions. [2019-02-14 16:19:12,844 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2019-02-14 16:19:12,845 INFO L225 Difference]: With dead ends: 10 [2019-02-14 16:19:12,845 INFO L226 Difference]: Without dead ends: 0 [2019-02-14 16:19:12,845 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-02-14 16:19:12,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-02-14 16:19:12,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-02-14 16:19:12,846 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2019-02-14 16:19:12,846 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2019-02-14 16:19:12,846 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2019-02-14 16:19:12,846 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2019-02-14 16:19:12,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-14 16:19:12,846 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-02-14 16:19:12,847 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-02-14 16:19:12,847 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-02-14 16:19:12,847 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2019-02-14 16:19:12,847 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2019-02-14 16:19:12,847 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2019-02-14 16:19:12,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-14 16:19:12,848 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-02-14 16:19:12,848 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-02-14 16:19:12,848 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-02-14 16:19:12,849 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2019-02-14 16:19:12,849 INFO L88 GeneralOperation]: Finished isEquivalent. [2019-02-14 16:19:12,849 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2019-02-14 16:19:12,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-02-14 16:19:12,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-02-14 16:19:12,849 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2019-02-14 16:19:12,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-02-14 16:19:12,850 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-02-14 16:19:12,850 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-02-14 16:19:12,850 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-02-14 16:19:12,850 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-02-14 16:19:12,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-02-14 16:19:13,037 WARN L181 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 19 [2019-02-14 16:19:13,132 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 12 83) no Hoare annotation was computed. [2019-02-14 16:19:13,132 INFO L444 ceAbstractionStarter]: At program point L64(lines 64 77) the Hoare annotation is: (let ((.cse1 (= ~tmp.base ULTIMATE.start_glob2_~p~4.base))) (or (let ((.cse0 (+ ULTIMATE.start_glob2_~p~4.offset 4))) (and (<= .cse0 ~tmp.offset) (= ULTIMATE.start___VERIFIER_assert_~cond 1) (<= ULTIMATE.start_glob2_~pathlim.offset .cse0) .cse1)) (and (<= ULTIMATE.start_glob2_~p~4.offset ~tmp.offset) (<= ULTIMATE.start_glob2_~pathlim.offset ULTIMATE.start_glob2_~p~4.offset) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse1))) [2019-02-14 16:19:13,133 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(lines 12 83) no Hoare annotation was computed. [2019-02-14 16:19:13,133 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 12 83) no Hoare annotation was computed. [2019-02-14 16:19:13,133 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 82) no Hoare annotation was computed. [2019-02-14 16:19:13,133 INFO L444 ceAbstractionStarter]: At program point L80(lines 80 81) the Hoare annotation is: false [2019-02-14 16:19:13,133 INFO L444 ceAbstractionStarter]: At program point L76(lines 57 76) the Hoare annotation is: (let ((.cse1 (= ~tmp.base ULTIMATE.start_glob2_~p~4.base))) (or (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= (+ ULTIMATE.start_glob2_~pathlim.offset 4) ULTIMATE.start_glob2_~p~4.offset)) (let ((.cse0 (+ ULTIMATE.start_glob2_~p~4.offset 4))) (and (<= .cse0 ~tmp.offset) (<= ULTIMATE.start_glob2_~pathlim.offset .cse0) .cse1)) (and (<= ULTIMATE.start_glob2_~p~4.offset ~tmp.offset) (<= ULTIMATE.start_glob2_~pathlim.offset ULTIMATE.start_glob2_~p~4.offset) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse1))) [2019-02-14 16:19:13,135 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2019-02-14 16:19:13,147 WARN L170 areAnnotationChecker]: ULTIMATE.startErr0ASSERT_VIOLATIONASSERT has no Hoare annotation [2019-02-14 16:19:13,147 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2019-02-14 16:19:13,147 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2019-02-14 16:19:13,147 INFO L163 areAnnotationChecker]: CFG has 3 edges. 3 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2019-02-14 16:19:13,155 INFO L202 PluginConnector]: Adding new model veris.c_NetBSD-libc__loop.i_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 04:19:13 BoogieIcfgContainer [2019-02-14 16:19:13,156 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-02-14 16:19:13,157 INFO L168 Benchmark]: Toolchain (without parser) took 4929.17 ms. Allocated memory was 137.9 MB in the beginning and 213.4 MB in the end (delta: 75.5 MB). Free memory was 104.9 MB in the beginning and 108.5 MB in the end (delta: -3.6 MB). Peak memory consumption was 71.9 MB. Max. memory is 7.1 GB. [2019-02-14 16:19:13,159 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 137.9 MB. Free memory is still 106.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-02-14 16:19:13,160 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.59 ms. Allocated memory is still 137.9 MB. Free memory was 104.9 MB in the beginning and 103.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-02-14 16:19:13,161 INFO L168 Benchmark]: Boogie Preprocessor took 25.20 ms. Allocated memory is still 137.9 MB. Free memory was 103.3 MB in the beginning and 102.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-02-14 16:19:13,162 INFO L168 Benchmark]: RCFGBuilder took 467.86 ms. Allocated memory is still 137.9 MB. Free memory was 102.0 MB in the beginning and 88.3 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2019-02-14 16:19:13,163 INFO L168 Benchmark]: TraceAbstraction took 4392.97 ms. Allocated memory was 137.9 MB in the beginning and 213.4 MB in the end (delta: 75.5 MB). Free memory was 87.9 MB in the beginning and 108.5 MB in the end (delta: -20.6 MB). Peak memory consumption was 54.9 MB. Max. memory is 7.1 GB. [2019-02-14 16:19:13,168 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - GenericResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 137.9 MB. Free memory is still 106.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 38.59 ms. Allocated memory is still 137.9 MB. Free memory was 104.9 MB in the beginning and 103.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.20 ms. Allocated memory is still 137.9 MB. Free memory was 103.3 MB in the beginning and 102.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 467.86 ms. Allocated memory is still 137.9 MB. Free memory was 102.0 MB in the beginning and 88.3 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4392.97 ms. Allocated memory was 137.9 MB in the beginning and 213.4 MB in the end (delta: 75.5 MB). Free memory was 87.9 MB in the beginning and 108.5 MB in the end (delta: -20.6 MB). Peak memory consumption was 54.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 82]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 64]: Loop Invariant Derived loop invariant: (((glob2_~p~4.offset + 4 <= ~tmp.offset && __VERIFIER_assert_~cond == 1) && glob2_~pathlim.offset <= glob2_~p~4.offset + 4) && ~tmp.base == glob2_~p~4.base) || (((glob2_~p~4.offset <= ~tmp.offset && glob2_~pathlim.offset <= glob2_~p~4.offset) && 1 == __VERIFIER_assert_~cond) && ~tmp.base == glob2_~p~4.base) - InvariantResult [Line: 80]: Loop Invariant Derived loop invariant: false - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: ((!(0 == __VERIFIER_assert_~cond) && glob2_~pathlim.offset + 4 <= glob2_~p~4.offset) || ((glob2_~p~4.offset + 4 <= ~tmp.offset && glob2_~pathlim.offset <= glob2_~p~4.offset + 4) && ~tmp.base == glob2_~p~4.base)) || (((glob2_~p~4.offset <= ~tmp.offset && glob2_~pathlim.offset <= glob2_~p~4.offset) && 1 == __VERIFIER_assert_~cond) && ~tmp.base == glob2_~p~4.base) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. SAFE Result, 4.3s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 8 SDtfs, 2 SDslu, 12 SDs, 0 SdLazy, 28 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.4s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 8 NumberOfFragments, 70 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 735 SizeOfPredicates, 14 NumberOfNonLiveVariables, 81 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 6/12 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...