java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/ai/array-bench/reach_32bit_compound_exp_cong.epf -i ../../../trunk/examples/programs/heapseparator/speedup-poc-dd-9-limited.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fa1c628-m [2019-01-31 14:44:13,047 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-31 14:44:13,049 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-31 14:44:13,065 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-01-31 14:44:13,104 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_compound_exp_cong.epf [2019-01-31 14:44:13,119 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-31 14:44:13,120 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-31 14:44:13,120 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-01-31 14:44:13,121 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-01-31 14:44:13,121 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-01-31 14:44:13,121 INFO L133 SettingsManager]: * User list type=DISABLED [2019-01-31 14:44:13,121 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-01-31 14:44:13,122 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-01-31 14:44:13,122 INFO L133 SettingsManager]: * Explicit value domain=true [2019-01-31 14:44:13,122 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-01-31 14:44:13,122 INFO L133 SettingsManager]: * Octagon Domain=false [2019-01-31 14:44:13,122 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2019-01-31 14:44:13,123 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-01-31 14:44:13,123 INFO L133 SettingsManager]: * Interval Domain=false [2019-01-31 14:44:13,123 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-31 14:44:13,124 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-31 14:44:13,124 INFO L133 SettingsManager]: * Use SBE=true [2019-01-31 14:44:13,124 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-31 14:44:13,125 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-31 14:44:13,125 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-31 14:44:13,125 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-31 14:44:13,126 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-31 14:44:13,126 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-31 14:44:13,126 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-31 14:44:13,126 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-31 14:44:13,126 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-31 14:44:13,127 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-31 14:44:13,128 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-31 14:44:13,128 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-31 14:44:13,128 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-31 14:44:13,128 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-31 14:44:13,129 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:8092 -smt2 -in -t:10000 [2019-01-31 14:44:13,129 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-31 14:44:13,129 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-31 14:44:13,130 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-31 14:44:13,130 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-01-31 14:44:13,130 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-31 14:44:13,130 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:8092 -smt2 -in [2019-01-31 14:44:13,130 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-01-31 14:44:13,131 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-01-31 14:44:13,182 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-31 14:44:13,199 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-31 14:44:13,205 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-31 14:44:13,206 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-01-31 14:44:13,207 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-01-31 14:44:13,208 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-9-limited.bpl [2019-01-31 14:44:13,208 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-9-limited.bpl' [2019-01-31 14:44:13,279 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-31 14:44:13,281 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-01-31 14:44:13,281 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-31 14:44:13,281 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-31 14:44:13,282 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-31 14:44:13,301 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 31.01 02:44:13" (1/1) ... [2019-01-31 14:44:13,317 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 31.01 02:44:13" (1/1) ... [2019-01-31 14:44:13,362 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-31 14:44:13,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-31 14:44:13,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-31 14:44:13,363 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-31 14:44:13,375 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 31.01 02:44:13" (1/1) ... [2019-01-31 14:44:13,375 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 31.01 02:44:13" (1/1) ... [2019-01-31 14:44:13,380 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 31.01 02:44:13" (1/1) ... [2019-01-31 14:44:13,380 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 31.01 02:44:13" (1/1) ... [2019-01-31 14:44:13,393 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 31.01 02:44:13" (1/1) ... [2019-01-31 14:44:13,399 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 31.01 02:44:13" (1/1) ... [2019-01-31 14:44:13,401 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 31.01 02:44:13" (1/1) ... [2019-01-31 14:44:13,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-31 14:44:13,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-31 14:44:13,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-31 14:44:13,408 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-31 14:44:13,409 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 31.01 02:44:13" (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:8092 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:8092 -smt2 -in -t:10000 [2019-01-31 14:44:13,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-31 14:44:13,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-31 14:44:14,511 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-31 14:44:14,512 INFO L286 CfgBuilder]: Removed 21 assue(true) statements. [2019-01-31 14:44:14,514 INFO L202 PluginConnector]: Adding new model speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 02:44:14 BoogieIcfgContainer [2019-01-31 14:44:14,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-31 14:44:14,516 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-31 14:44:14,516 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-31 14:44:14,519 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-31 14:44:14,519 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 31.01 02:44:13" (1/2) ... [2019-01-31 14:44:14,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4123821f and model type speedup-poc-dd-9-limited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 02:44:14, skipping insertion in model container [2019-01-31 14:44:14,521 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 31.01 02:44:14" (2/2) ... [2019-01-31 14:44:14,523 INFO L112 eAbstractionObserver]: Analyzing ICFG speedup-poc-dd-9-limited.bpl [2019-01-31 14:44:14,533 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-31 14:44:14,541 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2019-01-31 14:44:14,559 INFO L257 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2019-01-31 14:44:14,592 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-31 14:44:14,593 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-31 14:44:14,593 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-31 14:44:14,593 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-31 14:44:14,593 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-31 14:44:14,593 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-31 14:44:14,593 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-31 14:44:14,594 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-31 14:44:14,610 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-01-31 14:44:14,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-01-31 14:44:14,616 INFO L394 BasicCegarLoop]: Found error trace [2019-01-31 14:44:14,617 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2019-01-31 14:44:14,620 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT]=== [2019-01-31 14:44:14,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-31 14:44:14,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1000, now seen corresponding path program 1 times [2019-01-31 14:44:14,641 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-31 14:44:14,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-31 14:44:14,691 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-31 14:44:14,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-31 14:44:14,691 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-31 14:44:14,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-31 14:44:14,970 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 [2019-01-31 14:44:14,979 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 [2019-01-31 14:44:14,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-31 14:44:14,983 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-31 14:44:14,984 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-01-31 14:44:14,984 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-01-31 14:44:14,989 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-01-31 14:44:14,990 INFO L84 Accepts]: Finished accepts. word is accepted. [2019-01-31 14:44:14,994 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2019-01-31 14:44:15,009 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 2 edges. 2 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2019-01-31 14:44:15,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-31 14:44:15,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-31 14:44:15,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-31 14:44:15,019 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 3 states. [2019-01-31 14:44:15,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-31 14:44:15,433 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2019-01-31 14:44:15,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-31 14:44:15,434 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-01-31 14:44:15,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-31 14:44:15,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-01-31 14:44:15,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2019-01-31 14:44:15,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-01-31 14:44:15,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2019-01-31 14:44:15,447 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 57 transitions. [2019-01-31 14:44:15,913 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 57 edges. 57 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2019-01-31 14:44:15,926 INFO L225 Difference]: With dead ends: 41 [2019-01-31 14:44:15,926 INFO L226 Difference]: Without dead ends: 36 [2019-01-31 14:44:15,930 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 [2019-01-31 14:44:15,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-01-31 14:44:16,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 20. [2019-01-31 14:44:16,001 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2019-01-31 14:44:16,002 INFO L82 GeneralOperation]: Start isEquivalent. First operand 36 states. Second operand 20 states. [2019-01-31 14:44:16,002 INFO L74 IsIncluded]: Start isIncluded. First operand 36 states. Second operand 20 states. [2019-01-31 14:44:16,003 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 20 states. [2019-01-31 14:44:16,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-31 14:44:16,011 INFO L93 Difference]: Finished difference Result 36 states and 52 transitions. [2019-01-31 14:44:16,011 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 52 transitions. [2019-01-31 14:44:16,012 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-01-31 14:44:16,012 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2019-01-31 14:44:16,012 INFO L74 IsIncluded]: Start isIncluded. First operand 20 states. Second operand 36 states. [2019-01-31 14:44:16,013 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 36 states. [2019-01-31 14:44:16,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-31 14:44:16,017 INFO L93 Difference]: Finished difference Result 36 states and 52 transitions. [2019-01-31 14:44:16,017 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 52 transitions. [2019-01-31 14:44:16,018 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-01-31 14:44:16,018 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2019-01-31 14:44:16,018 INFO L88 GeneralOperation]: Finished isEquivalent. [2019-01-31 14:44:16,019 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2019-01-31 14:44:16,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-01-31 14:44:16,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 37 transitions. [2019-01-31 14:44:16,023 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 37 transitions. Word has length 2 [2019-01-31 14:44:16,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-31 14:44:16,023 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 37 transitions. [2019-01-31 14:44:16,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-31 14:44:16,025 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 37 transitions. [2019-01-31 14:44:16,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-01-31 14:44:16,025 INFO L394 BasicCegarLoop]: Found error trace [2019-01-31 14:44:16,026 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-01-31 14:44:16,026 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT]=== [2019-01-31 14:44:16,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-31 14:44:16,027 INFO L82 PathProgramCache]: Analyzing trace with hash 30388, now seen corresponding path program 1 times [2019-01-31 14:44:16,027 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-01-31 14:44:16,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-31 14:44:16,028 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-31 14:44:16,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-31 14:44:16,029 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-01-31 14:44:16,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-31 14:44:16,221 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 [2019-01-31 14:44:16,224 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 [2019-01-31 14:44:16,225 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 [2019-01-31 14:44:16,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-31 14:44:16,225 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-31 14:44:16,226 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-01-31 14:44:16,226 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2019-01-31 14:44:16,228 INFO L207 CegarAbsIntRunner]: [0], [18], [39] [2019-01-31 14:44:16,274 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-01-31 14:44:16,275 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-31 14:44:16,463 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-31 14:44:16,464 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Performed 110 root evaluator evaluations with a maximum evaluation depth of 3. Performed 110 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-01-31 14:44:16,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-31 14:44:16,477 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-01-31 14:44:16,478 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-31 14:44:16,478 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-01-31 14:44:16,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-31 14:44:16,493 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-01-31 14:44:16,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-31 14:44:16,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-31 14:44:16,553 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-31 14:44:17,092 WARN L181 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2019-01-31 14:44:17,114 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2019-01-31 14:44:17,130 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:17,133 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 39 [2019-01-31 14:44:17,192 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:17,194 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:17,197 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 49 [2019-01-31 14:44:17,288 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:17,290 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:17,291 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:17,293 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 63 [2019-01-31 14:44:17,359 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:17,361 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:17,364 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:17,366 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:17,369 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 81 [2019-01-31 14:44:17,446 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:17,447 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:17,452 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:17,454 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:17,455 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:17,458 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 103 [2019-01-31 14:44:17,566 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:17,568 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:17,570 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:17,573 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:17,575 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:17,576 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:17,580 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 129 [2019-01-31 14:44:17,655 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:17,658 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:17,660 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:17,663 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:17,665 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:17,666 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:17,668 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:17,672 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 159 [2019-01-31 14:44:17,888 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:17,889 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:17,890 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:17,892 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:17,894 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:17,895 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:17,897 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:17,899 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:17,904 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 190 [2019-01-31 14:44:17,912 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2019-01-31 14:44:18,084 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 14:44:18,227 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 14:44:18,292 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 14:44:18,382 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 14:44:18,425 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 14:44:18,463 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 14:44:18,495 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 14:44:18,523 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 14:44:18,638 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:18,639 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:18,641 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 95 [2019-01-31 14:44:18,719 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 77 [2019-01-31 14:44:18,737 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:18,739 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:18,741 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 78 [2019-01-31 14:44:18,804 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:18,806 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:18,807 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:18,809 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:18,810 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:18,812 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:18,813 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:18,816 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 107 [2019-01-31 14:44:19,042 WARN L181 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2019-01-31 14:44:19,080 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:19,081 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:19,083 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:19,084 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:19,086 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:19,087 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:19,089 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:19,092 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:19,094 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 16 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 116 [2019-01-31 14:44:19,304 WARN L181 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2019-01-31 14:44:19,397 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:19,399 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:19,400 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:19,409 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:19,411 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:19,427 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:19,429 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:19,430 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:19,431 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:19,433 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:19,436 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 134 [2019-01-31 14:44:19,733 WARN L181 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2019-01-31 14:44:19,800 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:19,803 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:19,804 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:19,805 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:19,806 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:19,807 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:19,808 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:19,810 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:19,811 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:19,813 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:19,814 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:19,815 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:19,818 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 29 disjoint index pairs (out of 28 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 113 [2019-01-31 14:44:19,846 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2019-01-31 14:44:19,873 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 14:44:19,900 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 14:44:19,924 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 14:44:19,945 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 14:44:19,950 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 14:44:19,952 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-31 14:44:20,002 INFO L267 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 2 dim-1 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2019-01-31 14:44:20,003 INFO L202 ElimStorePlain]: Needed 17 recursive calls to eliminate 9 variables, input treesize:149, output treesize:70 [2019-01-31 14:44:30,290 WARN L397 uantifierElimination]: Trying to double check SDD result, but SMT solver's response was UNKNOWN. [2019-01-31 14:44:30,291 WARN L398 uantifierElimination]: Input elimination task: ∃ [|v_#memory_int_47|, ULTIMATE.start_main_p2, ULTIMATE.start_main_p3, ULTIMATE.start_main_p5, ULTIMATE.start_main_p6, ULTIMATE.start_main_p7, ULTIMATE.start_main_p8, ULTIMATE.start_main_p9, |v_#valid_11|]. (let ((.cse0 (store |v_#valid_11| ULTIMATE.start_main_p1 1))) (let ((.cse2 (store (store (store .cse0 ULTIMATE.start_main_p2 1) ULTIMATE.start_main_p3 1) ULTIMATE.start_main_p4 1))) (let ((.cse3 (store .cse2 ULTIMATE.start_main_p5 1))) (let ((.cse1 (store .cse3 ULTIMATE.start_main_p6 1))) (and (< ULTIMATE.start_main_p3 ULTIMATE.start_main_p4) (= 0 (select .cse0 ULTIMATE.start_main_p2)) (= (select (store .cse1 ULTIMATE.start_main_p7 1) ULTIMATE.start_main_p8) 0) (< ULTIMATE.start_main_p5 ULTIMATE.start_main_p6) (< ULTIMATE.start_main_p2 ULTIMATE.start_main_p3) (= (select .cse2 ULTIMATE.start_main_p5) 0) (< ULTIMATE.start_main_p6 ULTIMATE.start_main_p7) (= 0 (select .cse3 ULTIMATE.start_main_p6)) (= (store (store (store (store (store (store (store (store (store |v_#memory_int_47| ULTIMATE.start_main_p1 0) ULTIMATE.start_main_p2 0) ULTIMATE.start_main_p3 0) ULTIMATE.start_main_p4 0) ULTIMATE.start_main_p5 0) ULTIMATE.start_main_p6 0) ULTIMATE.start_main_p7 0) ULTIMATE.start_main_p8 0) ULTIMATE.start_main_p9 0) |#memory_int|) (< ULTIMATE.start_main_p8 ULTIMATE.start_main_p9) (< ULTIMATE.start_main_p7 ULTIMATE.start_main_p8) (= (select .cse1 ULTIMATE.start_main_p7) 0) (< ULTIMATE.start_main_p4 ULTIMATE.start_main_p5) (< ULTIMATE.start_main_p1 ULTIMATE.start_main_p2)))))) [2019-01-31 14:44:30,291 WARN L399 uantifierElimination]: ElimStorePlain result: ∃ [ULTIMATE.start_main_p3, ULTIMATE.start_main_p2, ULTIMATE.start_main_p5, ULTIMATE.start_main_p6, ULTIMATE.start_main_p9, ULTIMATE.start_main_p7, ULTIMATE.start_main_p8]. (and (< ULTIMATE.start_main_p3 ULTIMATE.start_main_p4) (= 0 (select |#memory_int| ULTIMATE.start_main_p2)) (< ULTIMATE.start_main_p5 ULTIMATE.start_main_p6) (= 0 (select |#memory_int| ULTIMATE.start_main_p9)) (= (select |#memory_int| ULTIMATE.start_main_p3) 0) (< ULTIMATE.start_main_p2 ULTIMATE.start_main_p3) (= 0 (select |#memory_int| ULTIMATE.start_main_p5)) (< ULTIMATE.start_main_p6 ULTIMATE.start_main_p7) (= (select |#memory_int| ULTIMATE.start_main_p1) 0) (< ULTIMATE.start_main_p8 ULTIMATE.start_main_p9) (= 0 (select |#memory_int| ULTIMATE.start_main_p7)) (= 0 (select |#memory_int| ULTIMATE.start_main_p8)) (< ULTIMATE.start_main_p7 ULTIMATE.start_main_p8) (< ULTIMATE.start_main_p4 ULTIMATE.start_main_p5) (< ULTIMATE.start_main_p1 ULTIMATE.start_main_p2) (= (select |#memory_int| ULTIMATE.start_main_p4) 0) (= 0 (select |#memory_int| ULTIMATE.start_main_p6))) [2019-01-31 14:44:32,993 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:32,995 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:32,996 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:32,996 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:32,997 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:32,999 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:33,000 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:33,001 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:33,003 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:33,004 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:33,005 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:33,007 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:33,008 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:33,009 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:33,011 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:33,012 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:33,014 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:33,015 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:33,016 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:33,018 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:33,019 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:33,020 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:33,022 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:33,023 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:33,024 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:33,026 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:33,027 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:33,028 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:33,035 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:33,036 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:33,037 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:33,038 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:33,039 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:33,043 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:33,044 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:33,052 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:33,053 INFO L701 Elim1Store]: detected not equals via solver [2019-01-31 14:44:33,055 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 37 disjoint index pairs (out of 36 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 190 [2019-01-31 14:44:33,074 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-01-31 14:44:33,267 INFO L267 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 1 dim-1 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2019-01-31 14:44:33,267 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:80, output treesize:70 [2019-01-31 14:44:43,634 WARN L397 uantifierElimination]: Trying to double check SDD result, but SMT solver's response was UNKNOWN. [2019-01-31 14:44:43,634 WARN L398 uantifierElimination]: Input elimination task: ∃ [|v_#memory_int_48|, ULTIMATE.start_main_p4, ULTIMATE.start_main_p3, ULTIMATE.start_main_p9, ULTIMATE.start_main_p7, ULTIMATE.start_main_p5, ULTIMATE.start_main_p6, ULTIMATE.start_main_p2, ULTIMATE.start_main_p8]. (let ((.cse0 (select |v_#memory_int_48| ULTIMATE.start_main_p4))) (and (< ULTIMATE.start_main_p3 ULTIMATE.start_main_p4) (= 0 (select |v_#memory_int_48| ULTIMATE.start_main_p1)) (= 0 (select |v_#memory_int_48| ULTIMATE.start_main_p9)) (= 0 (select |v_#memory_int_48| ULTIMATE.start_main_p7)) (= (store |v_#memory_int_48| ULTIMATE.start_main_p4 (+ .cse0 (- 1))) |#memory_int|) (< ULTIMATE.start_main_p5 ULTIMATE.start_main_p6) (< ULTIMATE.start_main_p2 ULTIMATE.start_main_p3) (= 0 (select |v_#memory_int_48| ULTIMATE.start_main_p6)) (= 0 (select |v_#memory_int_48| ULTIMATE.start_main_p3)) (= 0 (select |v_#memory_int_48| ULTIMATE.start_main_p8)) (= 0 (select |v_#memory_int_48| ULTIMATE.start_main_p2)) (= 0 (select |v_#memory_int_48| ULTIMATE.start_main_p5)) (< ULTIMATE.start_main_p6 ULTIMATE.start_main_p7) (= 0 .cse0) (< ULTIMATE.start_main_p8 ULTIMATE.start_main_p9) (< ULTIMATE.start_main_p7 ULTIMATE.start_main_p8) (< ULTIMATE.start_main_p4 ULTIMATE.start_main_p5) (< ULTIMATE.start_main_p1 ULTIMATE.start_main_p2))) [2019-01-31 14:44:43,634 WARN L399 uantifierElimination]: ElimStorePlain result: ∃ [ULTIMATE.start_main_p3, ULTIMATE.start_main_p4, ULTIMATE.start_main_p2, ULTIMATE.start_main_p5, ULTIMATE.start_main_p6, ULTIMATE.start_main_p9, ULTIMATE.start_main_p7, ULTIMATE.start_main_p8]. (and (< ULTIMATE.start_main_p3 ULTIMATE.start_main_p4) (= 0 (select |#memory_int| ULTIMATE.start_main_p2)) (< ULTIMATE.start_main_p5 ULTIMATE.start_main_p6) (= 0 (select |#memory_int| ULTIMATE.start_main_p9)) (= (select |#memory_int| ULTIMATE.start_main_p3) 0) (< ULTIMATE.start_main_p2 ULTIMATE.start_main_p3) (= 0 (select |#memory_int| ULTIMATE.start_main_p5)) (< ULTIMATE.start_main_p6 ULTIMATE.start_main_p7) (= (select |#memory_int| ULTIMATE.start_main_p1) 0) (= (select |#memory_int| ULTIMATE.start_main_p4) (- 1)) (< ULTIMATE.start_main_p8 ULTIMATE.start_main_p9) (= 0 (select |#memory_int| ULTIMATE.start_main_p7)) (= 0 (select |#memory_int| ULTIMATE.start_main_p8)) (< ULTIMATE.start_main_p7 ULTIMATE.start_main_p8) (< ULTIMATE.start_main_p4 ULTIMATE.start_main_p5) (< ULTIMATE.start_main_p1 ULTIMATE.start_main_p2) (= 0 (select |#memory_int| ULTIMATE.start_main_p6))) [2019-01-31 14:45:13,790 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]; {173#(and (= (select |#memory_int| ULTIMATE.start_main_p1) 0) (exists ((ULTIMATE.start_main_p5 Int) (ULTIMATE.start_main_p6 Int) (ULTIMATE.start_main_p7 Int) (ULTIMATE.start_main_p8 Int) (ULTIMATE.start_main_p9 Int)) (and (= 0 (select |#memory_int| ULTIMATE.start_main_p5)) (< ULTIMATE.start_main_p6 ULTIMATE.start_main_p7) (< ULTIMATE.start_main_p8 ULTIMATE.start_main_p9) (= 0 (select |#memory_int| ULTIMATE.start_main_p7)) (= 0 (select |#memory_int| ULTIMATE.start_main_p8)) (= 0 (select |#memory_int| ULTIMATE.start_main_p9)) (< ULTIMATE.start_main_p5 ULTIMATE.start_main_p6) (< ULTIMATE.start_main_p7 ULTIMATE.start_main_p8) (< ULTIMATE.start_main_p4 ULTIMATE.start_main_p5) (= 0 (select |#memory_int| ULTIMATE.start_main_p6)))) (exists ((ULTIMATE.start_main_p2 Int) (ULTIMATE.start_main_p3 Int)) (and (< ULTIMATE.start_main_p3 ULTIMATE.start_main_p4) (= 0 (select |#memory_int| ULTIMATE.start_main_p2)) (= (select |#memory_int| ULTIMATE.start_main_p3) 0) (< ULTIMATE.start_main_p2 ULTIMATE.start_main_p3) (< ULTIMATE.start_main_p1 ULTIMATE.start_main_p2))) (= (select |#memory_int| ULTIMATE.start_main_p4) 0))} is VALID [2019-01-31 14:45:28,212 INFO L273 TraceCheckUtils]: 1: Hoare triple {173#(and (= (select |#memory_int| ULTIMATE.start_main_p1) 0) (exists ((ULTIMATE.start_main_p5 Int) (ULTIMATE.start_main_p6 Int) (ULTIMATE.start_main_p7 Int) (ULTIMATE.start_main_p8 Int) (ULTIMATE.start_main_p9 Int)) (and (= 0 (select |#memory_int| ULTIMATE.start_main_p5)) (< ULTIMATE.start_main_p6 ULTIMATE.start_main_p7) (< ULTIMATE.start_main_p8 ULTIMATE.start_main_p9) (= 0 (select |#memory_int| ULTIMATE.start_main_p7)) (= 0 (select |#memory_int| ULTIMATE.start_main_p8)) (= 0 (select |#memory_int| ULTIMATE.start_main_p9)) (< ULTIMATE.start_main_p5 ULTIMATE.start_main_p6) (< ULTIMATE.start_main_p7 ULTIMATE.start_main_p8) (< ULTIMATE.start_main_p4 ULTIMATE.start_main_p5) (= 0 (select |#memory_int| ULTIMATE.start_main_p6)))) (exists ((ULTIMATE.start_main_p2 Int) (ULTIMATE.start_main_p3 Int)) (and (< ULTIMATE.start_main_p3 ULTIMATE.start_main_p4) (= 0 (select |#memory_int| ULTIMATE.start_main_p2)) (= (select |#memory_int| ULTIMATE.start_main_p3) 0) (< ULTIMATE.start_main_p2 ULTIMATE.start_main_p3) (< ULTIMATE.start_main_p1 ULTIMATE.start_main_p2))) (= (select |#memory_int| ULTIMATE.start_main_p4) 0))} #memory_int := #memory_int[main_p4 := #memory_int[main_p4] - 1]; {177#(and (exists ((ULTIMATE.start_main_p4 Int) (ULTIMATE.start_main_p5 Int) (ULTIMATE.start_main_p6 Int) (ULTIMATE.start_main_p7 Int) (ULTIMATE.start_main_p8 Int) (ULTIMATE.start_main_p9 Int) (ULTIMATE.start_main_p2 Int) (ULTIMATE.start_main_p3 Int)) (and (< ULTIMATE.start_main_p3 ULTIMATE.start_main_p4) (= 0 (select |#memory_int| ULTIMATE.start_main_p2)) (= 0 (select |#memory_int| ULTIMATE.start_main_p9)) (< ULTIMATE.start_main_p5 ULTIMATE.start_main_p6) (= (select |#memory_int| ULTIMATE.start_main_p3) 0) (< ULTIMATE.start_main_p2 ULTIMATE.start_main_p3) (= 0 (select |#memory_int| ULTIMATE.start_main_p5)) (< ULTIMATE.start_main_p6 ULTIMATE.start_main_p7) (= (+ (select |#memory_int| ULTIMATE.start_main_p4) 1) 0) (< ULTIMATE.start_main_p8 ULTIMATE.start_main_p9) (= 0 (select |#memory_int| ULTIMATE.start_main_p7)) (= 0 (select |#memory_int| ULTIMATE.start_main_p8)) (< ULTIMATE.start_main_p7 ULTIMATE.start_main_p8) (< ULTIMATE.start_main_p4 ULTIMATE.start_main_p5) (< ULTIMATE.start_main_p1 ULTIMATE.start_main_p2) (= 0 (select |#memory_int| ULTIMATE.start_main_p6)))) (= (select |#memory_int| ULTIMATE.start_main_p1) 0))} is UNKNOWN [2019-01-31 14:45:28,213 INFO L273 TraceCheckUtils]: 2: Hoare triple {177#(and (exists ((ULTIMATE.start_main_p4 Int) (ULTIMATE.start_main_p5 Int) (ULTIMATE.start_main_p6 Int) (ULTIMATE.start_main_p7 Int) (ULTIMATE.start_main_p8 Int) (ULTIMATE.start_main_p9 Int) (ULTIMATE.start_main_p2 Int) (ULTIMATE.start_main_p3 Int)) (and (< ULTIMATE.start_main_p3 ULTIMATE.start_main_p4) (= 0 (select |#memory_int| ULTIMATE.start_main_p2)) (= 0 (select |#memory_int| ULTIMATE.start_main_p9)) (< ULTIMATE.start_main_p5 ULTIMATE.start_main_p6) (= (select |#memory_int| ULTIMATE.start_main_p3) 0) (< ULTIMATE.start_main_p2 ULTIMATE.start_main_p3) (= 0 (select |#memory_int| ULTIMATE.start_main_p5)) (< ULTIMATE.start_main_p6 ULTIMATE.start_main_p7) (= (+ (select |#memory_int| ULTIMATE.start_main_p4) 1) 0) (< ULTIMATE.start_main_p8 ULTIMATE.start_main_p9) (= 0 (select |#memory_int| ULTIMATE.start_main_p7)) (= 0 (select |#memory_int| ULTIMATE.start_main_p8)) (< ULTIMATE.start_main_p7 ULTIMATE.start_main_p8) (< ULTIMATE.start_main_p4 ULTIMATE.start_main_p5) (< ULTIMATE.start_main_p1 ULTIMATE.start_main_p2) (= 0 (select |#memory_int| ULTIMATE.start_main_p6)))) (= (select |#memory_int| ULTIMATE.start_main_p1) 0))} assume !(#memory_int[main_p1] >= 0); {167#false} is VALID [2019-01-31 14:45:28,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-31 14:45:28,214 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2019-01-31 14:45:28,237 INFO L273 TraceCheckUtils]: 2: Hoare triple {181#(<= 0 (select |#memory_int| ULTIMATE.start_main_p1))} assume !(#memory_int[main_p1] >= 0); {167#false} is VALID [2019-01-31 14:45:28,239 INFO L273 TraceCheckUtils]: 1: Hoare triple {185#(<= 0 (select (store |#memory_int| ULTIMATE.start_main_p4 (+ (select |#memory_int| ULTIMATE.start_main_p4) (- 1))) ULTIMATE.start_main_p1))} #memory_int := #memory_int[main_p4 := #memory_int[main_p4] - 1]; {181#(<= 0 (select |#memory_int| ULTIMATE.start_main_p1))} is VALID [2019-01-31 14:45:28,242 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]; {185#(<= 0 (select (store |#memory_int| ULTIMATE.start_main_p4 (+ (select |#memory_int| ULTIMATE.start_main_p4) (- 1))) ULTIMATE.start_main_p1))} is VALID [2019-01-31 14:45:28,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-31 14:45:28,264 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-01-31 14:45:28,264 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2019-01-31 14:45:28,265 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-01-31 14:45:28,265 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3 [2019-01-31 14:45:28,266 INFO L84 Accepts]: Finished accepts. word is accepted. [2019-01-31 14:45:28,266 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2019-01-31 14:45:43,106 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 6 edges. 5 inductive. 0 not inductive. 1 times theorem prover too weak to decide inductivity. [2019-01-31 14:45:43,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-31 14:45:43,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-31 14:45:43,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=31, Unknown=1, NotChecked=0, Total=56 [2019-01-31 14:45:43,107 INFO L87 Difference]: Start difference. First operand 20 states and 37 transitions. Second operand 6 states. [2019-01-31 14:46:18,636 WARN L181 SmtUtils]: Spent 13.92 s on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2019-01-31 14:46:22,770 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:8092 -smt2 -in -t:10000) stderr output: (error "out of memory") [2019-01-31 14:46:22,772 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:8092 -smt2 -in -t:10000) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:102) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.pop(ManagedScript.java:131) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:652) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:256) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:271) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:202) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:715) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:628) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:472) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.io.IOException: Stream closed at java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:433) at java.io.OutputStream.write(OutputStream.java:116) at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82) at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140) at sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:297) at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:141) at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:229) at java.io.BufferedWriter.flush(BufferedWriter.java:254) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:120) ... 28 more [2019-01-31 14:46:22,776 INFO L168 Benchmark]: Toolchain (without parser) took 129496.65 ms. Allocated memory was 140.0 MB in the beginning and 303.6 MB in the end (delta: 163.6 MB). Free memory was 107.2 MB in the beginning and 243.6 MB in the end (delta: -136.4 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2019-01-31 14:46:22,777 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory is still 108.8 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-01-31 14:46:22,777 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.15 ms. Allocated memory is still 140.0 MB. Free memory was 107.2 MB in the beginning and 104.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2019-01-31 14:46:22,778 INFO L168 Benchmark]: Boogie Preprocessor took 44.63 ms. Allocated memory is still 140.0 MB. Free memory was 104.3 MB in the beginning and 103.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. [2019-01-31 14:46:22,779 INFO L168 Benchmark]: RCFGBuilder took 1106.92 ms. Allocated memory is still 140.0 MB. Free memory was 102.9 MB in the beginning and 67.5 MB in the end (delta: 35.4 MB). Peak memory consumption was 35.4 MB. Max. memory is 7.1 GB. [2019-01-31 14:46:22,780 INFO L168 Benchmark]: TraceAbstraction took 128258.82 ms. Allocated memory was 140.0 MB in the beginning and 303.6 MB in the end (delta: 163.6 MB). Free memory was 67.3 MB in the beginning and 243.6 MB in the end (delta: -176.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-01-31 14:46:22,787 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - GenericResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory is still 108.8 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 81.15 ms. Allocated memory is still 140.0 MB. Free memory was 107.2 MB in the beginning and 104.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 44.63 ms. Allocated memory is still 140.0 MB. Free memory was 104.3 MB in the beginning and 103.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1106.92 ms. Allocated memory is still 140.0 MB. Free memory was 102.9 MB in the beginning and 67.5 MB in the end (delta: 35.4 MB). Peak memory consumption was 35.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 128258.82 ms. Allocated memory was 140.0 MB in the beginning and 303.6 MB in the end (delta: 163.6 MB). Free memory was 67.3 MB in the beginning and 243.6 MB in the end (delta: -176.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:8092 -smt2 -in -t:10000) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:8092 -smt2 -in -t:10000) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...