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-2-unlimited.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-1377b90 [2019-01-07 14:50:39,291 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-07 14:50:39,293 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-07 14:50:39,305 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-01-07 14:50:39,337 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 [2019-01-07 14:50:39,350 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-07 14:50:39,350 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-07 14:50:39,352 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-01-07 14:50:39,352 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-01-07 14:50:39,352 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-01-07 14:50:39,353 INFO L133 SettingsManager]: * User list type=DISABLED [2019-01-07 14:50:39,356 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-01-07 14:50:39,356 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-01-07 14:50:39,356 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-01-07 14:50:39,357 INFO L133 SettingsManager]: * Underlying domain=OctagonDomain [2019-01-07 14:50:39,357 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2019-01-07 14:50:39,357 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-01-07 14:50:39,357 INFO L133 SettingsManager]: * Interval Domain=false [2019-01-07 14:50:39,358 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-07 14:50:39,358 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-07 14:50:39,358 INFO L133 SettingsManager]: * Use SBE=true [2019-01-07 14:50:39,359 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-07 14:50:39,360 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-07 14:50:39,360 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-07 14:50:39,360 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-07 14:50:39,360 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-07 14:50:39,361 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-07 14:50:39,361 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-07 14:50:39,361 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-07 14:50:39,361 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-07 14:50:39,362 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-07 14:50:39,362 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-07 14:50:39,362 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-07 14:50:39,362 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-07 14:50:39,362 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-07 14:50:39,363 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-07 14:50:39,363 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-07 14:50:39,363 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-07 14:50:39,363 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-07 14:50:39,363 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-01-07 14:50:39,364 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-07 14:50:39,364 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-07 14:50:39,365 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-01-07 14:50:39,365 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-01-07 14:50:39,407 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-07 14:50:39,419 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-07 14:50:39,423 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-07 14:50:39,424 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-01-07 14:50:39,425 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-01-07 14:50:39,425 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-2-unlimited.bpl [2019-01-07 14:50:39,426 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-2-unlimited.bpl' [2019-01-07 14:50:39,463 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-07 14:50:39,465 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-01-07 14:50:39,466 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-07 14:50:39,466 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-07 14:50:39,466 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-07 14:50:39,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "speedup-poc-dd-2-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.01 02:50:39" (1/1) ... [2019-01-07 14:50:39,495 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "speedup-poc-dd-2-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.01 02:50:39" (1/1) ... [2019-01-07 14:50:39,521 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-07 14:50:39,522 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-07 14:50:39,522 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-07 14:50:39,523 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-07 14:50:39,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "speedup-poc-dd-2-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.01 02:50:39" (1/1) ... [2019-01-07 14:50:39,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "speedup-poc-dd-2-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.01 02:50:39" (1/1) ... [2019-01-07 14:50:39,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "speedup-poc-dd-2-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.01 02:50:39" (1/1) ... [2019-01-07 14:50:39,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "speedup-poc-dd-2-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.01 02:50:39" (1/1) ... [2019-01-07 14:50:39,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "speedup-poc-dd-2-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.01 02:50:39" (1/1) ... [2019-01-07 14:50:39,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "speedup-poc-dd-2-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.01 02:50:39" (1/1) ... [2019-01-07 14:50:39,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "speedup-poc-dd-2-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.01 02:50:39" (1/1) ... [2019-01-07 14:50:39,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-07 14:50:39,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-07 14:50:39,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-07 14:50:39,553 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-07 14:50:39,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "speedup-poc-dd-2-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.01 02:50:39" (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 [2019-01-07 14:50:39,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-07 14:50:39,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-07 14:50:39,928 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-07 14:50:39,929 INFO L286 CfgBuilder]: Removed 7 assue(true) statements. [2019-01-07 14:50:39,930 INFO L202 PluginConnector]: Adding new model speedup-poc-dd-2-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 02:50:39 BoogieIcfgContainer [2019-01-07 14:50:39,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-07 14:50:39,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-07 14:50:39,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-07 14:50:39,935 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-07 14:50:39,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-2-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.01 02:50:39" (1/2) ... [2019-01-07 14:50:39,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b35334 and model type speedup-poc-dd-2-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 02:50:39, skipping insertion in model container [2019-01-07 14:50:39,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-2-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 02:50:39" (2/2) ... [2019-01-07 14:50:39,939 INFO L112 eAbstractionObserver]: Analyzing ICFG speedup-poc-dd-2-unlimited.bpl [2019-01-07 14:50:39,950 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-07 14:50:39,958 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-01-07 14:50:39,976 INFO L257 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-01-07 14:50:40,007 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-07 14:50:40,007 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-07 14:50:40,007 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-07 14:50:40,008 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-07 14:50:40,008 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-07 14:50:40,008 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-07 14:50:40,008 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-07 14:50:40,008 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-07 14:50:40,024 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2019-01-07 14:50:40,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-01-07 14:50:40,032 INFO L394 BasicCegarLoop]: Found error trace [2019-01-07 14:50:40,033 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2019-01-07 14:50:40,035 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT]=== [2019-01-07 14:50:40,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-07 14:50:40,042 INFO L82 PathProgramCache]: Analyzing trace with hash 972, now seen corresponding path program 1 times [2019-01-07 14:50:40,044 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-07 14:50:40,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-07 14:50:40,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-07 14:50:40,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-07 14:50:40,091 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-07 14:50:40,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-07 14:50:40,355 INFO L273 TraceCheckUtils]: 0: Hoare triple {10#true} havoc main_p1, main_p2;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;#memory_int := #memory_int[main_p1 := 0];#memory_int := #memory_int[main_p2 := 0]; {12#(= (select |#memory_int| ULTIMATE.start_main_p1) 0)} is VALID [2019-01-07 14:50:40,373 INFO L273 TraceCheckUtils]: 1: Hoare triple {12#(= (select |#memory_int| ULTIMATE.start_main_p1) 0)} assume !(#memory_int[main_p1] >= 0); {11#false} is VALID [2019-01-07 14:50:40,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-07 14:50:40,378 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-07 14:50:40,378 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-01-07 14:50:40,379 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-01-07 14:50:40,384 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-01-07 14:50:40,387 INFO L84 Accepts]: Finished accepts. word is accepted. [2019-01-07 14:50:40,391 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2019-01-07 14:50:40,427 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 2 edges. 2 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2019-01-07 14:50:40,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-07 14:50:40,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-07 14:50:40,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-07 14:50:40,442 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2019-01-07 14:50:40,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-07 14:50:40,639 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2019-01-07 14:50:40,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-07 14:50:40,639 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-01-07 14:50:40,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-07 14:50:40,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-01-07 14:50:40,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 15 transitions. [2019-01-07 14:50:40,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-01-07 14:50:40,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 15 transitions. [2019-01-07 14:50:40,646 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 15 transitions. [2019-01-07 14:50:40,697 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 15 edges. 15 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2019-01-07 14:50:40,708 INFO L225 Difference]: With dead ends: 13 [2019-01-07 14:50:40,708 INFO L226 Difference]: Without dead ends: 8 [2019-01-07 14:50:40,712 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 [2019-01-07 14:50:40,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-01-07 14:50:40,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 6. [2019-01-07 14:50:40,749 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2019-01-07 14:50:40,749 INFO L82 GeneralOperation]: Start isEquivalent. First operand 8 states. Second operand 6 states. [2019-01-07 14:50:40,750 INFO L74 IsIncluded]: Start isIncluded. First operand 8 states. Second operand 6 states. [2019-01-07 14:50:40,750 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 6 states. [2019-01-07 14:50:40,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-07 14:50:40,752 INFO L93 Difference]: Finished difference Result 8 states and 10 transitions. [2019-01-07 14:50:40,753 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 10 transitions. [2019-01-07 14:50:40,753 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-01-07 14:50:40,753 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2019-01-07 14:50:40,754 INFO L74 IsIncluded]: Start isIncluded. First operand 6 states. Second operand 8 states. [2019-01-07 14:50:40,754 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 8 states. [2019-01-07 14:50:40,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-07 14:50:40,756 INFO L93 Difference]: Finished difference Result 8 states and 10 transitions. [2019-01-07 14:50:40,756 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 10 transitions. [2019-01-07 14:50:40,757 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-01-07 14:50:40,757 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2019-01-07 14:50:40,757 INFO L88 GeneralOperation]: Finished isEquivalent. [2019-01-07 14:50:40,758 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2019-01-07 14:50:40,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-01-07 14:50:40,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 9 transitions. [2019-01-07 14:50:40,761 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 9 transitions. Word has length 2 [2019-01-07 14:50:40,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-07 14:50:40,762 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 9 transitions. [2019-01-07 14:50:40,762 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-07 14:50:40,762 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 9 transitions. [2019-01-07 14:50:40,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-07 14:50:40,763 INFO L394 BasicCegarLoop]: Found error trace [2019-01-07 14:50:40,763 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-07 14:50:40,763 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT]=== [2019-01-07 14:50:40,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-07 14:50:40,764 INFO L82 PathProgramCache]: Analyzing trace with hash 29988, now seen corresponding path program 1 times [2019-01-07 14:50:40,764 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-07 14:50:40,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-07 14:50:40,765 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-07 14:50:40,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-07 14:50:40,766 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-07 14:50:40,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-07 14:50:41,031 INFO L273 TraceCheckUtils]: 0: Hoare triple {54#true} havoc main_p1, main_p2;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;#memory_int := #memory_int[main_p1 := 0];#memory_int := #memory_int[main_p2 := 0]; {56#(= (select |#memory_int| ULTIMATE.start_main_p1) 0)} is VALID [2019-01-07 14:50:41,043 INFO L273 TraceCheckUtils]: 1: Hoare triple {56#(= (select |#memory_int| ULTIMATE.start_main_p1) 0)} #memory_int := #memory_int[main_p1 := #memory_int[main_p1] + 1]; {57#(<= 0 (select |#memory_int| ULTIMATE.start_main_p1))} is VALID [2019-01-07 14:50:41,044 INFO L273 TraceCheckUtils]: 2: Hoare triple {57#(<= 0 (select |#memory_int| ULTIMATE.start_main_p1))} assume !(#memory_int[main_p1] >= 0); {55#false} is VALID [2019-01-07 14:50:41,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-07 14:50:41,045 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-07 14:50:41,045 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-07 14:50:41,046 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-01-07 14:50:41,048 INFO L207 CegarAbsIntRunner]: [0], [6], [11] [2019-01-07 14:50:41,110 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2019-01-07 14:50:41,110 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-07 14:50:46,242 WARN L212 ngHoareTripleChecker]: Soundness check inconclusive for the following hoare triple [2019-01-07 14:50:46,242 WARN L217 ngHoareTripleChecker]: Expected: VALID Actual: UNKNOWN [2019-01-07 14:50:46,244 WARN L219 ngHoareTripleChecker]: Solver was "Z3" in version "4.8.3" [2019-01-07 14:50:46,245 WARN L223 ngHoareTripleChecker]: -- [2019-01-07 14:50:46,245 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_b_6_1 Int) (v_v_24_1 Int) (v_b_7_1 Int) (v_v_22_1 Int) (v_v_23_1 Int) (v_v_30_1 Int) (v_v_17_1 Int) (v_v_28_1 Int) (v_v_29_1 Int) (v_v_18_1 Int) (v_v_16_1 Int) (v_b_11_1 Int) (v_b_14_1 Int) (v_b_15_1 Int) (v_v_2_1 Int) (v_v_4_1 Int) (v_b_10_1 Int)) (and (<= (- (- v_v_23_1) (- v_v_29_1)) (- 1)) (<= (- v_v_17_1 (- v_v_23_1)) 1) (<= (- (- c_ULTIMATE.start_main_p2) (- c_ULTIMATE.start_malloc_ptr)) 0) (<= (- v_b_11_1 v_b_14_1) 1) (<= (- v_b_15_1 v_b_7_1) 0) (<= (- c_ULTIMATE.start_malloc_ptr v_b_11_1) (- 1)) (= v_v_2_1 (select |c_old(#valid)| v_idx_24)) (<= (- (- v_b_10_1) (- v_b_6_1)) 0) (or (= (select |c_ULTIMATE.start_malloc_old_#valid| v_idx_23) v_v_18_1) (< v_idx_23 v_b_7_1)) (<= (- (- c_ULTIMATE.start_malloc_ptr) (- v_b_15_1)) 1) (<= (- v_b_10_1 v_b_7_1) (- 1)) (or (<= v_b_14_1 v_idx_18) (= (select |c_#memory_int| v_idx_18) v_v_28_1)) (<= (- (- v_b_15_1) (- v_b_6_1)) (- 1)) (<= (- (- v_v_17_1) v_v_17_1) 0) (<= (- (- c_ULTIMATE.start_main_p2) (- v_b_7_1)) 1) (= (+ v_b_11_1 (- 1)) v_b_10_1) (<= (- c_ULTIMATE.start_main_p2 v_b_15_1) (- 1)) (= (+ v_b_15_1 (- 1)) v_b_10_1) (<= (- (- v_b_11_1) (- v_b_14_1)) (- 1)) (<= (- (- v_b_11_1) (- v_b_7_1)) 0) (<= (- (- c_ULTIMATE.start_main_p2) (- v_b_11_1)) 1) (<= (- c_ULTIMATE.start_main_p2 v_b_11_1) (- 1)) (<= (- (- v_b_11_1) (- v_b_6_1)) (- 1)) (= (select |c_old(#memory_int)| v_idx_17) v_v_4_1) (<= (- v_b_14_1 v_b_15_1) (- 1)) (<= (- c_ULTIMATE.start_main_p2 v_b_6_1) 0) (= (+ c_ULTIMATE.start_main_p2 1) (+ v_b_10_1 1)) (<= (- v_v_17_1 v_v_29_1) 0) (<= (- v_v_29_1 (- v_v_29_1)) 0) (<= (- (- v_b_15_1) (- v_b_7_1)) 0) (<= (- (- v_v_23_1) v_v_29_1) (- 1)) (<= (- c_ULTIMATE.start_main_p2 v_b_10_1) 0) (= v_b_10_1 (+ v_b_7_1 (- 1))) (<= (- (- c_ULTIMATE.start_malloc_ptr) (- v_b_7_1)) 1) (or (< v_idx_27 v_b_11_1) (= (select |c_#valid| v_idx_27) v_v_24_1)) (<= (- c_ULTIMATE.start_malloc_ptr v_b_6_1) 0) (<= (- v_b_14_1 v_b_6_1) 0) (<= (- (- c_ULTIMATE.start_malloc_ptr) (- v_b_11_1)) 1) (or (<= v_b_6_1 v_idx_21) (= (select |c_ULTIMATE.start_malloc_old_#valid| v_idx_21) v_v_16_1)) (<= (- v_b_11_1 v_b_7_1) 0) (<= (- v_v_23_1 (- v_v_23_1)) 2) (or (= (select |c_#memory_int| v_idx_20) v_v_30_1) (< v_idx_20 v_b_15_1)) (<= (- c_ULTIMATE.start_main_p2 v_b_7_1) (- 1)) (= (+ c_ULTIMATE.start_main_p2 1) (+ c_ULTIMATE.start_malloc_ptr 1)) (<= (- (- c_ULTIMATE.start_main_p2) (- v_b_6_1)) 0) (<= (- (- v_v_17_1) (- v_v_29_1)) 0) (<= (- c_ULTIMATE.start_malloc_ptr v_b_10_1) 0) (<= (- (- v_b_10_1) (- v_b_14_1)) 0) (<= (- v_v_23_1 (- v_v_29_1)) 1) (= (+ c_ULTIMATE.start_main_p2 1) v_b_7_1) (or (<= v_b_10_1 v_idx_25) (= (select |c_#valid| v_idx_25) v_v_22_1)) (<= (- (- v_b_10_1) (- v_b_11_1)) 1) (= v_b_10_1 v_b_14_1) (or (= (select |c_#valid| v_idx_26) v_v_23_1) (< v_idx_26 v_b_10_1) (<= v_b_11_1 v_idx_26)) (<= (- (- v_v_29_1) v_v_29_1) 0) (<= (- c_ULTIMATE.start_malloc_ptr v_b_14_1) 0) (<= (- v_b_10_1 v_b_6_1) 0) (<= (- (- c_ULTIMATE.start_main_p2) (- v_b_14_1)) 0) (<= (- v_b_11_1 v_b_15_1) 0) (<= (- v_v_23_1 v_v_29_1) 1) (<= (- (- v_b_10_1) (- v_b_15_1)) 1) (= (+ c_ULTIMATE.start_main_p2 1) v_b_11_1) (<= (- (- v_b_11_1) (- v_b_15_1)) 0) (<= (- v_v_17_1 v_v_23_1) (- 1)) (<= (- c_ULTIMATE.start_malloc_ptr v_b_7_1) (- 1)) (<= (- v_b_11_1 v_b_6_1) 1) (<= (- c_ULTIMATE.start_main_p2 v_b_14_1) 0) (<= (- (- v_b_14_1) (- v_b_15_1)) 1) (= v_b_6_1 v_b_10_1) (<= (- c_ULTIMATE.start_malloc_ptr v_b_15_1) (- 1)) (or (<= v_b_15_1 v_idx_19) (< v_idx_19 v_b_14_1) (= (select |c_#memory_int| v_idx_19) v_v_29_1)) (<= (- (- c_ULTIMATE.start_main_p2) (- v_b_15_1)) 1) (<= (- c_ULTIMATE.start_main_p2 c_ULTIMATE.start_malloc_ptr) 0) (<= (- v_b_14_1 v_b_7_1) (- 1)) (<= (- v_b_15_1 v_b_6_1) 1) (= (+ c_ULTIMATE.start_main_p2 1) (+ v_b_14_1 1)) (or (< v_idx_22 v_b_6_1) (= (select |c_ULTIMATE.start_malloc_old_#valid| v_idx_22) v_v_17_1) (<= v_b_7_1 v_idx_22)) (<= (- (- v_b_6_1) (- v_b_7_1)) 1) (<= (- (- c_ULTIMATE.start_malloc_ptr) (- v_b_14_1)) 0) (= v_b_10_1 c_ULTIMATE.start_main_p2) (<= (- (- c_ULTIMATE.start_malloc_ptr) (- v_b_10_1)) 0) (= (+ c_ULTIMATE.start_main_p2 1) v_b_15_1) (<= (- v_b_10_1 v_b_11_1) (- 1)) (<= (- (- v_b_10_1) (- v_b_7_1)) 1) (<= (- (- c_ULTIMATE.start_malloc_ptr) (- v_b_6_1)) 0) (<= (- v_v_17_1 (- v_v_29_1)) 0) (<= (- v_b_10_1 v_b_14_1) 0) (= (+ c_ULTIMATE.start_main_p2 1) (+ v_b_6_1 1)) (<= (- v_v_17_1 (- v_v_17_1)) 0) (<= (- v_b_6_1 v_b_7_1) (- 1)) (<= (- (- v_v_17_1) v_v_29_1) 0) (<= (- (- v_v_17_1) v_v_23_1) (- 1)) (<= (- (- v_b_14_1) (- v_b_6_1)) 0) (= c_ULTIMATE.start_malloc_ptr v_b_10_1) (<= (- (- v_b_14_1) (- v_b_7_1)) 1) (<= (- v_b_10_1 v_b_15_1) (- 1)) (<= (- (- v_v_17_1) (- v_v_23_1)) 1) (<= (- (- v_v_23_1) v_v_23_1) (- 2)) (<= (- (- c_ULTIMATE.start_main_p2) (- v_b_10_1)) 0))))} [2019-01-07 14:50:46,246 WARN L228 ngHoareTripleChecker]: Action: #memory_int := #memory_int[main_p1 := #memory_int[main_p1] + 1]; [2019-01-07 14:50:46,247 WARN L184 hOps$ForEachOp$OfRef]: ActionStr: (= |c_#memory_int_primed| (store |c_#memory_int| c_ULTIMATE.start_main_p1 (+ (select |c_#memory_int| c_ULTIMATE.start_main_p1) 1))) [2019-01-07 14:50:46,247 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_b_6_1 Int) (v_v_24_1 Int) (v_b_7_1 Int) (v_v_22_1 Int) (v_v_23_1 Int) (v_v_33_1 Int) (v_v_32_1 Int) (v_v_31_1 Int) (v_v_17_1 Int) (v_v_18_1 Int) (v_v_16_1 Int) (v_b_11_1 Int) (v_b_16_1 Int) (v_b_17_1 Int) (v_v_2_1 Int) (v_v_4_1 Int) (v_b_10_1 Int)) (and (<= (- v_v_17_1 (- v_v_23_1)) 1) (= (+ v_b_16_1 1) (+ c_ULTIMATE.start_main_p1 1)) (<= (- (- c_ULTIMATE.start_main_p2) (- c_ULTIMATE.start_malloc_ptr)) 0) (<= (- (- c_ULTIMATE.start_main_p1) (- v_b_17_1)) 1) (<= (- c_ULTIMATE.start_malloc_ptr v_b_11_1) (- 1)) (= (+ c_ULTIMATE.start_main_p2 1) v_b_11_1) (or (<= v_b_17_1 v_idx_30) (= (select |c_#memory_int| v_idx_30) v_v_32_1) (< v_idx_30 v_b_16_1)) (<= (- (- v_b_10_1) (- v_b_6_1)) 0) (<= (- v_b_10_1 v_b_7_1) (- 1)) (= (+ v_b_17_1 (- 1)) c_ULTIMATE.start_main_p1) (<= (- v_b_16_1 v_b_17_1) (- 1)) (or (< v_idx_31 v_b_17_1) (= (select |c_#memory_int| v_idx_31) v_v_33_1)) (<= (- v_v_17_1 v_v_23_1) (- 1)) (or (= (select |c_ULTIMATE.start_malloc_old_#valid| v_idx_32) v_v_16_1) (<= v_b_6_1 v_idx_32)) (<= (- c_ULTIMATE.start_malloc_ptr v_b_7_1) (- 1)) (<= (- (- v_v_17_1) v_v_17_1) 0) (<= (- (- c_ULTIMATE.start_main_p2) (- v_b_7_1)) 1) (<= (- c_ULTIMATE.start_main_p1 v_b_17_1) (- 1)) (or (< v_idx_38 v_b_11_1) (= (select |c_#valid| v_idx_38) v_v_24_1)) (<= (- v_b_11_1 v_b_6_1) 1) (or (<= v_b_10_1 v_idx_36) (= (select |c_#valid| v_idx_36) v_v_22_1)) (<= (- (- v_b_11_1) (- v_b_7_1)) 0) (= (select |c_old(#memory_int)| v_idx_28) v_v_4_1) (<= (- (- c_ULTIMATE.start_main_p2) (- v_b_11_1)) 1) (<= (- c_ULTIMATE.start_main_p1 v_b_16_1) 0) (<= (- c_ULTIMATE.start_main_p2 v_b_11_1) (- 1)) (<= (- (- v_b_11_1) (- v_b_6_1)) (- 1)) (or (<= v_b_7_1 v_idx_33) (= (select |c_ULTIMATE.start_malloc_old_#valid| v_idx_33) v_v_17_1) (< v_idx_33 v_b_6_1)) (<= (- c_ULTIMATE.start_main_p2 c_ULTIMATE.start_malloc_ptr) 0) (= v_b_6_1 c_ULTIMATE.start_main_p2) (= v_b_17_1 (+ v_b_16_1 1)) (<= (- c_ULTIMATE.start_main_p2 v_b_6_1) 0) (= (+ c_ULTIMATE.start_main_p2 1) (+ v_b_10_1 1)) (or (< v_idx_34 v_b_7_1) (= v_v_18_1 (select |c_ULTIMATE.start_malloc_old_#valid| v_idx_34))) (= v_v_2_1 (select |c_old(#valid)| v_idx_35)) (<= (- (- c_ULTIMATE.start_main_p1) (- v_b_16_1)) 0) (<= (- (- v_b_6_1) (- v_b_7_1)) 1) (<= (- c_ULTIMATE.start_main_p2 v_b_10_1) 0) (= v_b_10_1 c_ULTIMATE.start_main_p2) (<= (- (- c_ULTIMATE.start_malloc_ptr) (- v_b_10_1)) 0) (<= (- v_b_10_1 v_b_11_1) (- 1)) (<= (- (- v_b_10_1) (- v_b_7_1)) 1) (= c_ULTIMATE.start_main_p2 (+ v_b_7_1 (- 1))) (<= (- (- c_ULTIMATE.start_malloc_ptr) (- v_b_6_1)) 0) (<= (- (- c_ULTIMATE.start_malloc_ptr) (- v_b_7_1)) 1) (<= (- c_ULTIMATE.start_malloc_ptr v_b_6_1) 0) (= (+ c_ULTIMATE.start_main_p2 1) (+ v_b_6_1 1)) (<= (- v_v_17_1 (- v_v_17_1)) 0) (<= (- (- c_ULTIMATE.start_malloc_ptr) (- v_b_11_1)) 1) (= c_ULTIMATE.start_malloc_ptr c_ULTIMATE.start_main_p2) (or (<= v_b_11_1 v_idx_37) (< v_idx_37 v_b_10_1) (= (select |c_#valid| v_idx_37) v_v_23_1)) (<= (- v_b_11_1 v_b_7_1) 0) (= v_b_16_1 c_ULTIMATE.start_main_p1) (<= (- v_b_6_1 v_b_7_1) (- 1)) (<= (- v_v_23_1 (- v_v_23_1)) 2) (<= (- c_ULTIMATE.start_main_p2 v_b_7_1) (- 1)) (= (+ v_b_11_1 (- 1)) c_ULTIMATE.start_main_p2) (= (+ c_ULTIMATE.start_main_p2 1) (+ c_ULTIMATE.start_malloc_ptr 1)) (<= (- (- c_ULTIMATE.start_main_p2) (- v_b_6_1)) 0) (<= (- (- v_v_17_1) v_v_23_1) (- 1)) (<= (- c_ULTIMATE.start_malloc_ptr v_b_10_1) 0) (or (<= v_b_16_1 v_idx_29) (= (select |c_#memory_int| v_idx_29) v_v_31_1)) (= (+ c_ULTIMATE.start_main_p2 1) v_b_7_1) (<= (- (- v_b_10_1) (- v_b_11_1)) 1) (<= (- (- v_b_16_1) (- v_b_17_1)) 1) (<= (- (- v_v_17_1) (- v_v_23_1)) 1) (<= (- (- v_v_23_1) v_v_23_1) (- 2)) (<= (- (- c_ULTIMATE.start_main_p2) (- v_b_10_1)) 0) (<= (- v_b_10_1 v_b_6_1) 0))))} [2019-01-07 14:50:46,247 WARN L263 ngHoareTripleChecker]: unsat core / model generation is disabled, enable it to get more details [2019-01-07 14:50:46,675 WARN L268 ngHoareTripleChecker]: -- [2019-01-07 14:50:46,675 WARN L269 ngHoareTripleChecker]: Simplified triple