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-6-unlimited.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-4b9831f [2018-12-23 14:40:51,291 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-23 14:40:51,293 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-23 14:40:51,310 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-12-23 14:40:51,369 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 [2018-12-23 14:40:51,389 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-23 14:40:51,389 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-23 14:40:51,391 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2018-12-23 14:40:51,391 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2018-12-23 14:40:51,392 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-23 14:40:51,392 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-23 14:40:51,392 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2018-12-23 14:40:51,392 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-23 14:40:51,392 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-23 14:40:51,392 INFO L133 SettingsManager]: * Underlying domain=OctagonDomain [2018-12-23 14:40:51,393 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2018-12-23 14:40:51,393 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-23 14:40:51,393 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-23 14:40:51,394 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-23 14:40:51,394 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-23 14:40:51,394 INFO L133 SettingsManager]: * Use SBE=true [2018-12-23 14:40:51,394 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-23 14:40:51,397 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-23 14:40:51,397 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-23 14:40:51,397 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-23 14:40:51,397 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-23 14:40:51,397 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-23 14:40:51,398 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-23 14:40:51,398 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-23 14:40:51,398 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-23 14:40:51,398 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-23 14:40:51,398 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-23 14:40:51,399 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-23 14:40:51,399 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-23 14:40:51,399 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-23 14:40:51,399 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-23 14:40:51,399 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-23 14:40:51,399 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-23 14:40:51,400 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-23 14:40:51,400 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-23 14:40:51,400 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-23 14:40:51,401 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-23 14:40:51,401 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-23 14:40:51,401 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-12-23 14:40:51,444 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-23 14:40:51,455 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-23 14:40:51,458 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-23 14:40:51,461 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-12-23 14:40:51,462 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-12-23 14:40:51,463 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-6-unlimited.bpl [2018-12-23 14:40:51,463 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-6-unlimited.bpl' [2018-12-23 14:40:51,518 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-23 14:40:51,520 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-12-23 14:40:51,521 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-23 14:40:51,521 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-23 14:40:51,521 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-23 14:40:51,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "speedup-poc-dd-6-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.12 02:40:51" (1/1) ... [2018-12-23 14:40:51,552 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "speedup-poc-dd-6-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.12 02:40:51" (1/1) ... [2018-12-23 14:40:51,584 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-23 14:40:51,585 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-23 14:40:51,585 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-23 14:40:51,585 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-23 14:40:51,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "speedup-poc-dd-6-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.12 02:40:51" (1/1) ... [2018-12-23 14:40:51,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "speedup-poc-dd-6-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.12 02:40:51" (1/1) ... [2018-12-23 14:40:51,600 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "speedup-poc-dd-6-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.12 02:40:51" (1/1) ... [2018-12-23 14:40:51,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "speedup-poc-dd-6-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.12 02:40:51" (1/1) ... [2018-12-23 14:40:51,604 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "speedup-poc-dd-6-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.12 02:40:51" (1/1) ... [2018-12-23 14:40:51,609 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "speedup-poc-dd-6-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.12 02:40:51" (1/1) ... [2018-12-23 14:40:51,610 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "speedup-poc-dd-6-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.12 02:40:51" (1/1) ... [2018-12-23 14:40:51,612 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-23 14:40:51,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-23 14:40:51,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-23 14:40:51,613 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-23 14:40:51,614 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "speedup-poc-dd-6-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.12 02:40:51" (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 [2018-12-23 14:40:51,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-23 14:40:51,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-23 14:40:52,452 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-23 14:40:52,453 INFO L280 CfgBuilder]: Removed 15 assue(true) statements. [2018-12-23 14:40:52,453 INFO L202 PluginConnector]: Adding new model speedup-poc-dd-6-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 02:40:52 BoogieIcfgContainer [2018-12-23 14:40:52,453 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-23 14:40:52,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-23 14:40:52,455 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-23 14:40:52,458 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-23 14:40:52,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-6-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.12 02:40:51" (1/2) ... [2018-12-23 14:40:52,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@397487b3 and model type speedup-poc-dd-6-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 02:40:52, skipping insertion in model container [2018-12-23 14:40:52,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-6-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 02:40:52" (2/2) ... [2018-12-23 14:40:52,463 INFO L112 eAbstractionObserver]: Analyzing ICFG speedup-poc-dd-6-unlimited.bpl [2018-12-23 14:40:52,473 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-23 14:40:52,480 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-12-23 14:40:52,494 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-12-23 14:40:52,526 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-23 14:40:52,526 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-23 14:40:52,527 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-23 14:40:52,527 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-23 14:40:52,527 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-23 14:40:52,527 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-23 14:40:52,527 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-23 14:40:52,527 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-23 14:40:52,544 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2018-12-23 14:40:52,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2018-12-23 14:40:52,550 INFO L394 BasicCegarLoop]: Found error trace [2018-12-23 14:40:52,552 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2018-12-23 14:40:52,555 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT]=== [2018-12-23 14:40:52,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-23 14:40:52,565 INFO L82 PathProgramCache]: Analyzing trace with hash 988, now seen corresponding path program 1 times [2018-12-23 14:40:52,567 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-23 14:40:52,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-23 14:40:52,616 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-23 14:40:52,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-23 14:40:52,616 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-23 14:40:52,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-23 14:40:52,896 INFO L273 TraceCheckUtils]: 0: Hoare triple {18#true} havoc main_p1, main_p2, main_p3, main_p4, main_p5, main_p6;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;#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]; {20#(= (select |#memory_int| ULTIMATE.start_main_p1) 0)} is VALID [2018-12-23 14:40:52,909 INFO L273 TraceCheckUtils]: 1: Hoare triple {20#(= (select |#memory_int| ULTIMATE.start_main_p1) 0)} assume !(#memory_int[main_p1] >= 0); {19#false} is VALID [2018-12-23 14:40:52,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-23 14:40:52,914 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-23 14:40:52,914 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-12-23 14:40:52,914 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-23 14:40:52,920 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2018-12-23 14:40:52,924 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-12-23 14:40:52,927 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2018-12-23 14:40:52,954 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 2 edges. 2 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-12-23 14:40:52,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-23 14:40:52,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-23 14:40:52,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-23 14:40:52,966 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2018-12-23 14:40:53,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-23 14:40:53,396 INFO L93 Difference]: Finished difference Result 29 states and 39 transitions. [2018-12-23 14:40:53,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-23 14:40:53,397 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2018-12-23 14:40:53,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-23 14:40:53,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-23 14:40:53,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 39 transitions. [2018-12-23 14:40:53,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-23 14:40:53,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 39 transitions. [2018-12-23 14:40:53,407 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 39 transitions. [2018-12-23 14:40:53,597 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 39 edges. 39 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-12-23 14:40:53,610 INFO L225 Difference]: With dead ends: 29 [2018-12-23 14:40:53,610 INFO L226 Difference]: Without dead ends: 24 [2018-12-23 14:40:53,614 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-23 14:40:53,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-12-23 14:40:53,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 14. [2018-12-23 14:40:53,688 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-12-23 14:40:53,689 INFO L82 GeneralOperation]: Start isEquivalent. First operand 24 states. Second operand 14 states. [2018-12-23 14:40:53,690 INFO L74 IsIncluded]: Start isIncluded. First operand 24 states. Second operand 14 states. [2018-12-23 14:40:53,690 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 14 states. [2018-12-23 14:40:53,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-23 14:40:53,695 INFO L93 Difference]: Finished difference Result 24 states and 34 transitions. [2018-12-23 14:40:53,696 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2018-12-23 14:40:53,696 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-23 14:40:53,697 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-12-23 14:40:53,697 INFO L74 IsIncluded]: Start isIncluded. First operand 14 states. Second operand 24 states. [2018-12-23 14:40:53,697 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 24 states. [2018-12-23 14:40:53,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-23 14:40:53,701 INFO L93 Difference]: Finished difference Result 24 states and 34 transitions. [2018-12-23 14:40:53,701 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2018-12-23 14:40:53,702 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-23 14:40:53,702 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-12-23 14:40:53,703 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-12-23 14:40:53,703 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-12-23 14:40:53,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-12-23 14:40:53,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 25 transitions. [2018-12-23 14:40:53,707 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 25 transitions. Word has length 2 [2018-12-23 14:40:53,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-23 14:40:53,708 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 25 transitions. [2018-12-23 14:40:53,708 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-23 14:40:53,709 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 25 transitions. [2018-12-23 14:40:53,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-12-23 14:40:53,709 INFO L394 BasicCegarLoop]: Found error trace [2018-12-23 14:40:53,709 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-12-23 14:40:53,710 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT]=== [2018-12-23 14:40:53,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-23 14:40:53,711 INFO L82 PathProgramCache]: Analyzing trace with hash 30376, now seen corresponding path program 1 times [2018-12-23 14:40:53,711 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-23 14:40:53,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-23 14:40:53,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-23 14:40:53,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-23 14:40:53,713 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-23 14:40:53,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-23 14:40:54,031 INFO L273 TraceCheckUtils]: 0: Hoare triple {118#true} havoc main_p1, main_p2, main_p3, main_p4, main_p5, main_p6;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;#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]; {120#(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 [2018-12-23 14:40:54,041 INFO L273 TraceCheckUtils]: 1: Hoare triple {120#(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]; {121#(= (select |#memory_int| ULTIMATE.start_main_p1) 0)} is VALID [2018-12-23 14:40:54,054 INFO L273 TraceCheckUtils]: 2: Hoare triple {121#(= (select |#memory_int| ULTIMATE.start_main_p1) 0)} assume !(#memory_int[main_p1] >= 0); {119#false} is VALID [2018-12-23 14:40:54,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-23 14:40:54,055 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-23 14:40:54,055 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-23 14:40:54,056 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2018-12-23 14:40:54,059 INFO L207 CegarAbsIntRunner]: [0], [18], [27] [2018-12-23 14:40:54,123 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2018-12-23 14:40:54,123 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-23 14:40:59,663 WARN L212 ngHoareTripleChecker]: Soundness check inconclusive for the following hoare triple [2018-12-23 14:40:59,663 WARN L217 ngHoareTripleChecker]: Expected: VALID Actual: UNKNOWN [2018-12-23 14:40:59,664 WARN L219 ngHoareTripleChecker]: Solver was "Z3" in version "4.8.3" [2018-12-23 14:40:59,665 WARN L223 ngHoareTripleChecker]: -- [2018-12-23 14:40:59,665 WARN L224 ngHoareTripleChecker]: Pre: {2147483645#(forall ((v_idx_25 Int) (v_idx_26 Int) (v_idx_23 Int) (v_idx_24 Int) (v_idx_21 Int) (v_idx_22 Int) (v_idx_20 Int) (v_idx_18 Int) (v_idx_19 Int) (v_idx_27 Int) (v_idx_17 Int)) (exists ((v_v_56_1 Int) (v_v_57_1 Int) (v_v_58_1 Int) (v_v_62_1 Int) (v_v_63_1 Int) (v_v_64_1 Int) (v_b_31_1 Int) (v_b_30_1 Int) (v_v_81_1 Int) (v_v_80_1 Int) (v_v_2_1 Int) (v_v_82_1 Int) (v_b_46_1 Int) (v_b_35_1 Int) (v_v_4_1 Int) (v_b_47_1 Int) (v_b_34_1 Int)) (and (<= (- v_b_30_1 v_b_47_1) (- 1)) (<= (- (- v_v_63_1) v_v_81_1) (- 1)) (or (< v_idx_22 v_b_30_1) (<= v_b_31_1 v_idx_22) (= (select |c_ULTIMATE.start_malloc_old_#valid| v_idx_22) v_v_57_1)) (<= (- v_v_63_1 (- v_v_81_1)) 1) (<= (- v_b_31_1 v_b_34_1) 1) (<= (- (- v_b_30_1) (- v_b_31_1)) 1) (<= (- v_v_57_1 (- v_v_57_1)) 0) (<= (- v_v_81_1 (- v_v_81_1)) 0) (<= (- v_v_57_1 v_v_63_1) (- 1)) (<= (- (- v_b_31_1) (- v_b_47_1)) 0) (or (= (select |c_#memory_int| v_idx_20) v_v_82_1) (< v_idx_20 v_b_47_1)) (= v_v_2_1 (select |c_old(#valid)| v_idx_24)) (or (< v_idx_19 v_b_46_1) (= (select |c_#memory_int| v_idx_19) v_v_81_1) (<= v_b_47_1 v_idx_19)) (<= (- (- c_ULTIMATE.start_main_p6) (- c_ULTIMATE.start_malloc_ptr)) 0) (<= (- v_v_57_1 (- v_v_63_1)) 1) (<= (- c_ULTIMATE.start_main_p6 v_b_35_1) (- 1)) (<= (- (- v_b_34_1) (- v_b_35_1)) 1) (<= (- v_b_31_1 v_b_35_1) 0) (<= (- (- v_v_81_1) v_v_81_1) 0) (or (= (select |c_ULTIMATE.start_malloc_old_#valid| v_idx_21) v_v_56_1) (<= v_b_30_1 v_idx_21)) (<= (- v_b_31_1 v_b_46_1) 1) (<= (- (- v_b_34_1) (- v_b_47_1)) 1) (<= (- v_v_63_1 v_v_81_1) 1) (<= (- (- v_v_57_1) (- v_v_81_1)) 0) (<= (- (- c_ULTIMATE.start_malloc_ptr) (- v_b_34_1)) 0) (<= (- v_v_57_1 v_v_81_1) 0) (<= (- (- c_ULTIMATE.start_main_p6) (- v_b_46_1)) 0) (<= (- (- v_b_31_1) (- v_b_35_1)) 0) (<= (- (- v_b_34_1) (- v_b_46_1)) 0) (<= (- c_ULTIMATE.start_malloc_ptr v_b_30_1) 0) (<= (- (- c_ULTIMATE.start_main_p6) (- v_b_31_1)) 1) (<= (- v_b_35_1 v_b_47_1) 0) (or (< v_idx_27 v_b_35_1) (= (select |c_#valid| v_idx_27) v_v_64_1)) (<= (- v_b_30_1 v_b_34_1) 0) (<= (- c_ULTIMATE.start_malloc_ptr v_b_34_1) 0) (<= (- v_b_34_1 v_b_46_1) 0) (<= (- (- c_ULTIMATE.start_main_p6) (- v_b_34_1)) 0) (= (select |c_old(#memory_int)| v_idx_17) v_v_4_1) (<= (- c_ULTIMATE.start_main_p6 c_ULTIMATE.start_malloc_ptr) 0) (<= (- v_b_34_1 v_b_35_1) (- 1)) (<= (- (- v_b_30_1) (- v_b_46_1)) 0) (<= (- (- v_b_46_1) (- v_b_47_1)) 1) (<= (- (- c_ULTIMATE.start_main_p6) (- v_b_30_1)) 0) (<= (- (- c_ULTIMATE.start_malloc_ptr) (- v_b_31_1)) 1) (<= (- (- c_ULTIMATE.start_malloc_ptr) (- v_b_30_1)) 0) (<= (- (- v_b_30_1) (- v_b_34_1)) 0) (<= (- (- v_b_30_1) (- v_b_35_1)) 1) (<= (- v_b_30_1 v_b_46_1) 0) (<= (- c_ULTIMATE.start_malloc_ptr v_b_47_1) (- 1)) (<= (- c_ULTIMATE.start_main_p6 v_b_31_1) (- 1)) (<= (- c_ULTIMATE.start_main_p6 v_b_46_1) 0) (<= (- c_ULTIMATE.start_main_p6 v_b_34_1) 0) (<= (- v_b_31_1 v_b_47_1) 0) (or (<= v_b_46_1 v_idx_18) (= (select |c_#memory_int| v_idx_18) v_v_80_1)) (<= (- v_v_63_1 (- v_v_63_1)) 2) (<= (- c_ULTIMATE.start_malloc_ptr v_b_35_1) (- 1)) (<= (- (- v_v_57_1) v_v_63_1) (- 1)) (<= (- (- c_ULTIMATE.start_malloc_ptr) (- v_b_46_1)) 0) (or (<= v_b_34_1 v_idx_25) (= (select |c_#valid| v_idx_25) v_v_62_1)) (<= (- (- c_ULTIMATE.start_main_p6) (- v_b_47_1)) 1) (<= (- (- c_ULTIMATE.start_malloc_ptr) (- v_b_47_1)) 1) (<= (- (- v_v_57_1) v_v_57_1) 0) (<= (- (- c_ULTIMATE.start_malloc_ptr) (- v_b_35_1)) 1) (<= (- (- v_v_63_1) v_v_63_1) (- 2)) (<= (- v_b_34_1 v_b_47_1) (- 1)) (<= (- c_ULTIMATE.start_main_p6 v_b_30_1) 0) (<= (- (- v_b_35_1) (- v_b_47_1)) 0) (<= (- v_b_30_1 v_b_31_1) (- 1)) (<= (- v_v_57_1 (- v_v_81_1)) 0) (<= (- c_ULTIMATE.start_main_p6 v_b_47_1) (- 1)) (<= (- (- c_ULTIMATE.start_main_p6) (- v_b_35_1)) 1) (<= (- (- v_b_31_1) (- v_b_46_1)) (- 1)) (<= (- c_ULTIMATE.start_malloc_ptr v_b_31_1) (- 1)) (<= (- (- v_b_35_1) (- v_b_46_1)) (- 1)) (<= (- v_b_46_1 v_b_47_1) (- 1)) (<= (- (- v_v_57_1) (- v_v_63_1)) 1) (<= (- (- v_b_30_1) (- v_b_47_1)) 1) (<= (- (- v_b_31_1) (- v_b_34_1)) (- 1)) (<= (- c_ULTIMATE.start_malloc_ptr v_b_46_1) 0) (<= (- v_b_35_1 v_b_46_1) 1) (or (= (select |c_ULTIMATE.start_malloc_old_#valid| v_idx_23) v_v_58_1) (< v_idx_23 v_b_31_1)) (<= (- v_b_30_1 v_b_35_1) (- 1)) (<= (- (- v_v_57_1) v_v_81_1) 0) (<= (- (- v_v_63_1) (- v_v_81_1)) (- 1)) (or (<= v_b_35_1 v_idx_26) (< v_idx_26 v_b_34_1) (= (select |c_#valid| v_idx_26) v_v_63_1)))))} [2018-12-23 14:40:59,665 WARN L228 ngHoareTripleChecker]: Action: #memory_int := #memory_int[main_p4 := #memory_int[main_p4] - 1]; [2018-12-23 14:40:59,666 WARN L184 hOps$ForEachOp$OfRef]: ActionStr: (= |c_#memory_int_primed| (store |c_#memory_int| c_ULTIMATE.start_main_p4 (+ (select |c_#memory_int| c_ULTIMATE.start_main_p4) (- 1)))) [2018-12-23 14:40:59,667 WARN L230 ngHoareTripleChecker]: Post: {2147483644#(forall ((v_idx_36 Int) (v_idx_37 Int) (v_idx_34 Int) (v_idx_35 Int) (v_idx_32 Int) (v_idx_33 Int) (v_idx_30 Int) (v_idx_31 Int) (v_idx_29 Int) (v_idx_38 Int) (v_idx_28 Int)) (exists ((v_v_56_1 Int) (v_v_57_1 Int) (v_v_58_1 Int) (v_v_85_1 Int) (v_v_62_1 Int) (v_v_63_1 Int) (v_v_84_1 Int) (v_v_64_1 Int) (v_b_31_1 Int) (v_b_30_1 Int) (v_b_48_1 Int) (v_v_83_1 Int) (v_v_2_1 Int) (v_b_49_1 Int) (v_b_35_1 Int) (v_v_4_1 Int) (v_b_34_1 Int)) (and (<= (- v_b_31_1 v_b_34_1) 1) (<= (- (- v_b_30_1) (- v_b_31_1)) 1) (<= (- v_v_57_1 (- v_v_57_1)) 0) (<= (- (- c_ULTIMATE.start_main_p4) (- v_b_48_1)) 0) (<= (- v_v_57_1 v_v_63_1) (- 1)) (<= (- c_ULTIMATE.start_main_p4 v_b_48_1) 0) (<= (- (- c_ULTIMATE.start_main_p6) (- c_ULTIMATE.start_malloc_ptr)) 0) (<= (- v_v_57_1 (- v_v_63_1)) 1) (<= (- c_ULTIMATE.start_main_p6 v_b_35_1) (- 1)) (<= (- (- v_b_34_1) (- v_b_35_1)) 1) (or (= (select |c_#memory_int| v_idx_29) v_v_83_1) (<= v_b_48_1 v_idx_29)) (<= (- v_b_31_1 v_b_35_1) 0) (or (= (select |c_#memory_int| v_idx_31) v_v_85_1) (< v_idx_31 v_b_49_1)) (<= (- (- c_ULTIMATE.start_malloc_ptr) (- v_b_34_1)) 0) (<= (- (- v_b_31_1) (- v_b_35_1)) 0) (or (< v_idx_34 v_b_31_1) (= v_v_58_1 (select |c_ULTIMATE.start_malloc_old_#valid| v_idx_34))) (or (< v_idx_38 v_b_35_1) (= (select |c_#valid| v_idx_38) v_v_64_1)) (= (select |c_old(#memory_int)| v_idx_28) v_v_4_1) (<= (- c_ULTIMATE.start_malloc_ptr v_b_30_1) 0) (<= (- (- c_ULTIMATE.start_main_p6) (- v_b_31_1)) 1) (or (< v_idx_37 v_b_34_1) (= (select |c_#valid| v_idx_37) v_v_63_1) (<= v_b_35_1 v_idx_37)) (<= (- v_b_30_1 v_b_34_1) 0) (<= (- c_ULTIMATE.start_malloc_ptr v_b_34_1) 0) (or (<= v_b_34_1 v_idx_36) (= (select |c_#valid| v_idx_36) v_v_62_1)) (<= (- (- c_ULTIMATE.start_main_p6) (- v_b_34_1)) 0) (or (= (select |c_#memory_int| v_idx_30) v_v_84_1) (<= v_b_49_1 v_idx_30) (< v_idx_30 v_b_48_1)) (<= (- c_ULTIMATE.start_main_p6 c_ULTIMATE.start_malloc_ptr) 0) (<= (- v_b_34_1 v_b_35_1) (- 1)) (<= (- (- c_ULTIMATE.start_main_p6) (- v_b_30_1)) 0) (<= (- (- c_ULTIMATE.start_malloc_ptr) (- v_b_31_1)) 1) (<= (- (- c_ULTIMATE.start_malloc_ptr) (- v_b_30_1)) 0) (<= (- (- v_b_30_1) (- v_b_34_1)) 0) (<= (- (- v_b_30_1) (- v_b_35_1)) 1) (<= (- c_ULTIMATE.start_main_p6 v_b_31_1) (- 1)) (= v_v_2_1 (select |c_old(#valid)| v_idx_35)) (<= (- c_ULTIMATE.start_main_p6 v_b_34_1) 0) (<= (- v_b_48_1 v_b_49_1) (- 1)) (<= (- v_v_63_1 (- v_v_63_1)) 2) (<= (- c_ULTIMATE.start_malloc_ptr v_b_35_1) (- 1)) (or (= (select |c_ULTIMATE.start_malloc_old_#valid| v_idx_33) v_v_57_1) (<= v_b_31_1 v_idx_33) (< v_idx_33 v_b_30_1)) (<= (- (- v_b_48_1) (- v_b_49_1)) 1) (<= (- (- v_v_57_1) v_v_63_1) (- 1)) (or (<= v_b_30_1 v_idx_32) (= (select |c_ULTIMATE.start_malloc_old_#valid| v_idx_32) v_v_56_1)) (<= (- (- v_v_57_1) v_v_57_1) 0) (<= (- (- c_ULTIMATE.start_malloc_ptr) (- v_b_35_1)) 1) (<= (- (- v_v_63_1) v_v_63_1) (- 2)) (<= (- c_ULTIMATE.start_main_p6 v_b_30_1) 0) (<= (- v_b_30_1 v_b_31_1) (- 1)) (<= (- (- c_ULTIMATE.start_main_p4) (- v_b_49_1)) 1) (<= (- (- c_ULTIMATE.start_main_p6) (- v_b_35_1)) 1) (<= (- c_ULTIMATE.start_malloc_ptr v_b_31_1) (- 1)) (<= (- (- v_v_57_1) (- v_v_63_1)) 1) (<= (- c_ULTIMATE.start_main_p4 v_b_49_1) (- 1)) (<= (- (- v_b_31_1) (- v_b_34_1)) (- 1)) (<= (- v_b_30_1 v_b_35_1) (- 1)))))} [2018-12-23 14:40:59,667 WARN L263 ngHoareTripleChecker]: unsat core / model generation is disabled, enable it to get more details [2018-12-23 14:41:00,137 WARN L268 ngHoareTripleChecker]: -- [2018-12-23 14:41:00,137 WARN L269 ngHoareTripleChecker]: Simplified triple