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_array_oct.epf -i ../../../trunk/examples/programs/heapseparator/speedup-poc-dd-9-limited.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-a9d37a5-m [2019-02-28 13:56:25,925 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-02-28 13:56:25,928 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-02-28 13:56:25,941 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-02-28 13:56:25,942 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-02-28 13:56:25,946 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-02-28 13:56:25,947 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-02-28 13:56:25,949 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-02-28 13:56:25,951 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-02-28 13:56:25,951 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-02-28 13:56:25,952 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-02-28 13:56:25,984 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_oct.epf [2019-02-28 13:56:26,010 INFO L110 SettingsManager]: Loading preferences was successful [2019-02-28 13:56:26,011 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-02-28 13:56:26,011 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-02-28 13:56:26,012 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-02-28 13:56:26,012 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-02-28 13:56:26,012 INFO L133 SettingsManager]: * User list type=DISABLED [2019-02-28 13:56:26,012 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-02-28 13:56:26,012 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-02-28 13:56:26,013 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-02-28 13:56:26,013 INFO L133 SettingsManager]: * Underlying domain=OctagonDomain [2019-02-28 13:56:26,013 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2019-02-28 13:56:26,013 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-02-28 13:56:26,013 INFO L133 SettingsManager]: * Interval Domain=false [2019-02-28 13:56:26,014 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-02-28 13:56:26,014 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-02-28 13:56:26,015 INFO L133 SettingsManager]: * Use SBE=true [2019-02-28 13:56:26,015 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-02-28 13:56:26,015 INFO L133 SettingsManager]: * sizeof long=4 [2019-02-28 13:56:26,015 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-02-28 13:56:26,015 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-02-28 13:56:26,016 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-02-28 13:56:26,016 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-02-28 13:56:26,016 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-02-28 13:56:26,016 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-02-28 13:56:26,016 INFO L133 SettingsManager]: * sizeof long double=12 [2019-02-28 13:56:26,017 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-02-28 13:56:26,017 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-02-28 13:56:26,017 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-02-28 13:56:26,017 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-02-28 13:56:26,017 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-02-28 13:56:26,018 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:16092 -smt2 -in -t:200000 [2019-02-28 13:56:26,018 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-02-28 13:56:26,018 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-02-28 13:56:26,018 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-02-28 13:56:26,018 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-02-28 13:56:26,019 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-02-28 13:56:26,019 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:16092 -smt2 -in [2019-02-28 13:56:26,019 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-02-28 13:56:26,019 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-02-28 13:56:26,073 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-02-28 13:56:26,087 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-02-28 13:56:26,093 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-02-28 13:56:26,095 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-02-28 13:56:26,097 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-02-28 13:56:26,098 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-9-limited.bpl [2019-02-28 13:56:26,098 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-9-limited.bpl' [2019-02-28 13:56:26,172 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-02-28 13:56:26,174 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-02-28 13:56:26,175 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-02-28 13:56:26,175 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-02-28 13:56:26,175 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-02-28 13:56:26,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 01:56:26" (1/1) ... [2019-02-28 13:56:26,210 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 01:56:26" (1/1) ... [2019-02-28 13:56:26,258 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-02-28 13:56:26,259 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-02-28 13:56:26,259 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-02-28 13:56:26,259 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-02-28 13:56:26,271 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 01:56:26" (1/1) ... [2019-02-28 13:56:26,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 01:56:26" (1/1) ... [2019-02-28 13:56:26,275 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 01:56:26" (1/1) ... [2019-02-28 13:56:26,275 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 01:56:26" (1/1) ... [2019-02-28 13:56:26,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 01:56:26" (1/1) ... [2019-02-28 13:56:26,300 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 01:56:26" (1/1) ... [2019-02-28 13:56:26,302 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 01:56:26" (1/1) ... [2019-02-28 13:56:26,309 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-02-28 13:56:26,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-02-28 13:56:26,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-02-28 13:56:26,312 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-02-28 13:56:26,313 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 01:56:26" (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:16092 -smt2 -in -t:200000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:16092 -smt2 -in -t:200000 [2019-02-28 13:56:26,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-02-28 13:56:26,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-02-28 13:56:27,635 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-02-28 13:56:27,636 INFO L286 CfgBuilder]: Removed 21 assue(true) statements. [2019-02-28 13:56:27,638 INFO L202 PluginConnector]: Adding new model speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.02 01:56:27 BoogieIcfgContainer [2019-02-28 13:56:27,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-02-28 13:56:27,639 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-02-28 13:56:27,639 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-02-28 13:56:27,643 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-02-28 13:56:27,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 01:56:26" (1/2) ... [2019-02-28 13:56:27,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c98b29b and model type speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.02 01:56:27, skipping insertion in model container [2019-02-28 13:56:27,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.02 01:56:27" (2/2) ... [2019-02-28 13:56:27,647 INFO L112 eAbstractionObserver]: Analyzing ICFG speedup-poc-dd-9-limited.bpl [2019-02-28 13:56:27,657 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-02-28 13:56:27,667 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2019-02-28 13:56:27,686 INFO L257 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2019-02-28 13:56:27,721 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-02-28 13:56:27,721 INFO L383 AbstractCegarLoop]: Hoare is true [2019-02-28 13:56:27,721 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-02-28 13:56:27,721 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-02-28 13:56:27,722 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-02-28 13:56:27,722 INFO L387 AbstractCegarLoop]: Difference is false [2019-02-28 13:56:27,722 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-02-28 13:56:27,722 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-02-28 13:56:27,741 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-02-28 13:56:27,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-02-28 13:56:27,748 INFO L394 BasicCegarLoop]: Found error trace [2019-02-28 13:56:27,749 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2019-02-28 13:56:27,752 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT]=== [2019-02-28 13:56:27,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 13:56:27,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1000, now seen corresponding path program 1 times [2019-02-28 13:56:27,760 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-28 13:56:27,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 13:56:27,822 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 13:56:27,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 13:56:27,822 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-28 13:56:27,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 13:56:28,043 INFO L273 TraceCheckUtils]: 0: Hoare triple {24#true} havoc main_p1, main_p2, main_p3, main_p4, main_p5, main_p6, main_p7, main_p8, main_p9;malloc_old_#valid := #valid;havoc malloc_ptr;havoc #valid;assume malloc_old_#valid[malloc_ptr] == 0;assume #valid == malloc_old_#valid[malloc_ptr := 1];main_p1 := malloc_ptr;malloc_old_#valid := #valid;havoc malloc_ptr;havoc #valid;assume malloc_old_#valid[malloc_ptr] == 0;assume #valid == malloc_old_#valid[malloc_ptr := 1];main_p2 := malloc_ptr;malloc_old_#valid := #valid;havoc malloc_ptr;havoc #valid;assume malloc_old_#valid[malloc_ptr] == 0;assume #valid == malloc_old_#valid[malloc_ptr := 1];main_p3 := malloc_ptr;malloc_old_#valid := #valid;havoc malloc_ptr;havoc #valid;assume malloc_old_#valid[malloc_ptr] == 0;assume #valid == malloc_old_#valid[malloc_ptr := 1];main_p4 := malloc_ptr;malloc_old_#valid := #valid;havoc malloc_ptr;havoc #valid;assume malloc_old_#valid[malloc_ptr] == 0;assume #valid == malloc_old_#valid[malloc_ptr := 1];main_p5 := malloc_ptr;malloc_old_#valid := #valid;havoc malloc_ptr;havoc #valid;assume malloc_old_#valid[malloc_ptr] == 0;assume #valid == malloc_old_#valid[malloc_ptr := 1];main_p6 := malloc_ptr;malloc_old_#valid := #valid;havoc malloc_ptr;havoc #valid;assume malloc_old_#valid[malloc_ptr] == 0;assume #valid == malloc_old_#valid[malloc_ptr := 1];main_p7 := malloc_ptr;malloc_old_#valid := #valid;havoc malloc_ptr;havoc #valid;assume malloc_old_#valid[malloc_ptr] == 0;assume #valid == malloc_old_#valid[malloc_ptr := 1];main_p8 := malloc_ptr;malloc_old_#valid := #valid;havoc malloc_ptr;havoc #valid;assume malloc_old_#valid[malloc_ptr] == 0;assume #valid == malloc_old_#valid[malloc_ptr := 1];main_p9 := malloc_ptr;assume main_p1 < main_p2;assume main_p2 < main_p3;assume main_p3 < main_p4;assume main_p4 < main_p5;assume main_p5 < main_p6;assume main_p6 < main_p7;assume main_p7 < main_p8;assume main_p8 < main_p9;#memory_int := #memory_int[main_p1 := 0];#memory_int := #memory_int[main_p2 := 0];#memory_int := #memory_int[main_p3 := 0];#memory_int := #memory_int[main_p4 := 0];#memory_int := #memory_int[main_p5 := 0];#memory_int := #memory_int[main_p6 := 0];#memory_int := #memory_int[main_p7 := 0];#memory_int := #memory_int[main_p8 := 0];#memory_int := #memory_int[main_p9 := 0]; {26#(= (select |#memory_int| ULTIMATE.start_main_p1) 0)} is VALID [2019-02-28 13:56:28,064 INFO L273 TraceCheckUtils]: 1: Hoare triple {26#(= (select |#memory_int| ULTIMATE.start_main_p1) 0)} assume !(#memory_int[main_p1] >= 0); {25#false} is VALID [2019-02-28 13:56:28,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 13:56:28,069 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-02-28 13:56:28,070 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-02-28 13:56:28,070 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-02-28 13:56:28,075 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-02-28 13:56:28,077 INFO L84 Accepts]: Finished accepts. word is accepted. [2019-02-28 13:56:28,081 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2019-02-28 13:56:28,112 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 2 edges. 2 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2019-02-28 13:56:28,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-02-28 13:56:28,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-02-28 13:56:28,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-02-28 13:56:28,126 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 3 states. [2019-02-28 13:56:28,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-28 13:56:28,594 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2019-02-28 13:56:28,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-02-28 13:56:28,595 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-02-28 13:56:28,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-02-28 13:56:28,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-02-28 13:56:28,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2019-02-28 13:56:28,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-02-28 13:56:28,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2019-02-28 13:56:28,606 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 57 transitions. [2019-02-28 13:56:28,834 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 57 edges. 57 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2019-02-28 13:56:28,849 INFO L225 Difference]: With dead ends: 41 [2019-02-28 13:56:28,850 INFO L226 Difference]: Without dead ends: 36 [2019-02-28 13:56:28,856 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-02-28 13:56:28,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-02-28 13:56:28,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 20. [2019-02-28 13:56:28,952 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2019-02-28 13:56:28,953 INFO L82 GeneralOperation]: Start isEquivalent. First operand 36 states. Second operand 20 states. [2019-02-28 13:56:28,954 INFO L74 IsIncluded]: Start isIncluded. First operand 36 states. Second operand 20 states. [2019-02-28 13:56:28,954 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 20 states. [2019-02-28 13:56:28,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-28 13:56:28,965 INFO L93 Difference]: Finished difference Result 36 states and 52 transitions. [2019-02-28 13:56:28,965 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 52 transitions. [2019-02-28 13:56:28,970 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-02-28 13:56:28,972 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2019-02-28 13:56:28,972 INFO L74 IsIncluded]: Start isIncluded. First operand 20 states. Second operand 36 states. [2019-02-28 13:56:28,972 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 36 states. [2019-02-28 13:56:28,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-28 13:56:28,987 INFO L93 Difference]: Finished difference Result 36 states and 52 transitions. [2019-02-28 13:56:28,987 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 52 transitions. [2019-02-28 13:56:28,988 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-02-28 13:56:28,988 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2019-02-28 13:56:28,991 INFO L88 GeneralOperation]: Finished isEquivalent. [2019-02-28 13:56:28,991 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2019-02-28 13:56:28,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-02-28 13:56:28,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 37 transitions. [2019-02-28 13:56:29,000 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 37 transitions. Word has length 2 [2019-02-28 13:56:29,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-02-28 13:56:29,001 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 37 transitions. [2019-02-28 13:56:29,001 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-02-28 13:56:29,001 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 37 transitions. [2019-02-28 13:56:29,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-02-28 13:56:29,002 INFO L394 BasicCegarLoop]: Found error trace [2019-02-28 13:56:29,002 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-02-28 13:56:29,003 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT]=== [2019-02-28 13:56:29,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 13:56:29,004 INFO L82 PathProgramCache]: Analyzing trace with hash 30388, now seen corresponding path program 1 times [2019-02-28 13:56:29,004 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-28 13:56:29,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 13:56:29,007 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 13:56:29,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 13:56:29,007 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-28 13:56:29,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 13:56:29,471 WARN L181 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 13 [2019-02-28 13:56:29,634 INFO L273 TraceCheckUtils]: 0: Hoare triple {166#true} havoc main_p1, main_p2, main_p3, main_p4, main_p5, main_p6, main_p7, main_p8, main_p9;malloc_old_#valid := #valid;havoc malloc_ptr;havoc #valid;assume malloc_old_#valid[malloc_ptr] == 0;assume #valid == malloc_old_#valid[malloc_ptr := 1];main_p1 := malloc_ptr;malloc_old_#valid := #valid;havoc malloc_ptr;havoc #valid;assume malloc_old_#valid[malloc_ptr] == 0;assume #valid == malloc_old_#valid[malloc_ptr := 1];main_p2 := malloc_ptr;malloc_old_#valid := #valid;havoc malloc_ptr;havoc #valid;assume malloc_old_#valid[malloc_ptr] == 0;assume #valid == malloc_old_#valid[malloc_ptr := 1];main_p3 := malloc_ptr;malloc_old_#valid := #valid;havoc malloc_ptr;havoc #valid;assume malloc_old_#valid[malloc_ptr] == 0;assume #valid == malloc_old_#valid[malloc_ptr := 1];main_p4 := malloc_ptr;malloc_old_#valid := #valid;havoc malloc_ptr;havoc #valid;assume malloc_old_#valid[malloc_ptr] == 0;assume #valid == malloc_old_#valid[malloc_ptr := 1];main_p5 := malloc_ptr;malloc_old_#valid := #valid;havoc malloc_ptr;havoc #valid;assume malloc_old_#valid[malloc_ptr] == 0;assume #valid == malloc_old_#valid[malloc_ptr := 1];main_p6 := malloc_ptr;malloc_old_#valid := #valid;havoc malloc_ptr;havoc #valid;assume malloc_old_#valid[malloc_ptr] == 0;assume #valid == malloc_old_#valid[malloc_ptr := 1];main_p7 := malloc_ptr;malloc_old_#valid := #valid;havoc malloc_ptr;havoc #valid;assume malloc_old_#valid[malloc_ptr] == 0;assume #valid == malloc_old_#valid[malloc_ptr := 1];main_p8 := malloc_ptr;malloc_old_#valid := #valid;havoc malloc_ptr;havoc #valid;assume malloc_old_#valid[malloc_ptr] == 0;assume #valid == malloc_old_#valid[malloc_ptr := 1];main_p9 := malloc_ptr;assume main_p1 < main_p2;assume main_p2 < main_p3;assume main_p3 < main_p4;assume main_p4 < main_p5;assume main_p5 < main_p6;assume main_p6 < main_p7;assume main_p7 < main_p8;assume main_p8 < main_p9;#memory_int := #memory_int[main_p1 := 0];#memory_int := #memory_int[main_p2 := 0];#memory_int := #memory_int[main_p3 := 0];#memory_int := #memory_int[main_p4 := 0];#memory_int := #memory_int[main_p5 := 0];#memory_int := #memory_int[main_p6 := 0];#memory_int := #memory_int[main_p7 := 0];#memory_int := #memory_int[main_p8 := 0];#memory_int := #memory_int[main_p9 := 0]; {168#(and (= 0 (select (store |#memory_int| ULTIMATE.start_main_p4 (+ (select |#memory_int| ULTIMATE.start_main_p4) (- 1))) ULTIMATE.start_main_p1)) (not (= ULTIMATE.start_main_p1 ULTIMATE.start_main_p4)))} is VALID [2019-02-28 13:56:29,636 INFO L273 TraceCheckUtils]: 1: Hoare triple {168#(and (= 0 (select (store |#memory_int| ULTIMATE.start_main_p4 (+ (select |#memory_int| ULTIMATE.start_main_p4) (- 1))) ULTIMATE.start_main_p1)) (not (= ULTIMATE.start_main_p1 ULTIMATE.start_main_p4)))} #memory_int := #memory_int[main_p4 := #memory_int[main_p4] - 1]; {169#(= (select |#memory_int| ULTIMATE.start_main_p1) 0)} is VALID [2019-02-28 13:56:29,638 INFO L273 TraceCheckUtils]: 2: Hoare triple {169#(= (select |#memory_int| ULTIMATE.start_main_p1) 0)} assume !(#memory_int[main_p1] >= 0); {167#false} is VALID [2019-02-28 13:56:29,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 13:56:29,639 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 13:56:29,639 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-02-28 13:56:29,640 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-02-28 13:56:29,642 INFO L207 CegarAbsIntRunner]: [0], [18], [39] [2019-02-28 13:56:29,707 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2019-02-28 13:56:29,707 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2)