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-8-unlimited.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-e4dfe74 [2018-12-18 17:53:01,444 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-18 17:53:01,446 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-18 17:53:01,462 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-12-18 17:53:01,526 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 [2018-12-18 17:53:01,539 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-18 17:53:01,539 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-18 17:53:01,540 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2018-12-18 17:53:01,540 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2018-12-18 17:53:01,540 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-18 17:53:01,541 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-18 17:53:01,541 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-18 17:53:01,541 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-18 17:53:01,541 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-18 17:53:01,541 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-18 17:53:01,542 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-18 17:53:01,542 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-18 17:53:01,542 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-18 17:53:01,543 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-18 17:53:01,543 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-18 17:53:01,543 INFO L133 SettingsManager]: * Use SBE=true [2018-12-18 17:53:01,543 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-18 17:53:01,544 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-18 17:53:01,544 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-18 17:53:01,544 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-18 17:53:01,544 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-18 17:53:01,544 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-18 17:53:01,545 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-18 17:53:01,545 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-18 17:53:01,545 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-18 17:53:01,545 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-18 17:53:01,545 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-18 17:53:01,546 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-18 17:53:01,546 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-18 17:53:01,546 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-18 17:53:01,546 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-18 17:53:01,547 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-18 17:53:01,547 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-18 17:53:01,547 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-18 17:53:01,547 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-18 17:53:01,547 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-18 17:53:01,548 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-18 17:53:01,548 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-18 17:53:01,548 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-12-18 17:53:01,579 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-18 17:53:01,593 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-18 17:53:01,600 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-18 17:53:01,601 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-12-18 17:53:01,602 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-12-18 17:53:01,603 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-8-unlimited.bpl [2018-12-18 17:53:01,604 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/heapseparator/speedup-poc-dd-8-unlimited.bpl' [2018-12-18 17:53:01,674 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-18 17:53:01,676 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-12-18 17:53:01,677 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-18 17:53:01,677 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-18 17:53:01,678 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-18 17:53:01,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "speedup-poc-dd-8-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.12 05:53:01" (1/1) ... [2018-12-18 17:53:01,713 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "speedup-poc-dd-8-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.12 05:53:01" (1/1) ... [2018-12-18 17:53:01,748 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-18 17:53:01,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-18 17:53:01,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-18 17:53:01,749 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-18 17:53:01,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "speedup-poc-dd-8-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.12 05:53:01" (1/1) ... [2018-12-18 17:53:01,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "speedup-poc-dd-8-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.12 05:53:01" (1/1) ... [2018-12-18 17:53:01,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "speedup-poc-dd-8-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.12 05:53:01" (1/1) ... [2018-12-18 17:53:01,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "speedup-poc-dd-8-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.12 05:53:01" (1/1) ... [2018-12-18 17:53:01,771 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "speedup-poc-dd-8-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.12 05:53:01" (1/1) ... [2018-12-18 17:53:01,779 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "speedup-poc-dd-8-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.12 05:53:01" (1/1) ... [2018-12-18 17:53:01,785 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "speedup-poc-dd-8-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.12 05:53:01" (1/1) ... [2018-12-18 17:53:01,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-18 17:53:01,792 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-18 17:53:01,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-18 17:53:01,792 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-18 17:53:01,794 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "speedup-poc-dd-8-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.12 05:53:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-18 17:53:01,870 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-12-18 17:53:01,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-18 17:53:01,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-18 17:53:02,633 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-18 17:53:02,633 INFO L280 CfgBuilder]: Removed 3 assue(true) statements. [2018-12-18 17:53:02,634 INFO L202 PluginConnector]: Adding new model speedup-poc-dd-8-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 05:53:02 BoogieIcfgContainer [2018-12-18 17:53:02,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-18 17:53:02,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-18 17:53:02,635 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-18 17:53:02,639 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-18 17:53:02,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-8-unlimited.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.12 05:53:01" (1/2) ... [2018-12-18 17:53:02,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54f56adc and model type speedup-poc-dd-8-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 05:53:02, skipping insertion in model container [2018-12-18 17:53:02,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "speedup-poc-dd-8-unlimited.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 05:53:02" (2/2) ... [2018-12-18 17:53:02,642 INFO L112 eAbstractionObserver]: Analyzing ICFG speedup-poc-dd-8-unlimited.bpl [2018-12-18 17:53:02,652 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-18 17:53:02,659 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2018-12-18 17:53:02,677 INFO L257 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2018-12-18 17:53:02,712 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-18 17:53:02,712 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-18 17:53:02,712 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-18 17:53:02,712 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-18 17:53:02,713 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-18 17:53:02,713 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-18 17:53:02,713 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-18 17:53:02,713 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-18 17:53:02,729 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-12-18 17:53:02,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2018-12-18 17:53:02,737 INFO L394 BasicCegarLoop]: Found error trace [2018-12-18 17:53:02,738 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2018-12-18 17:53:02,743 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT]=== [2018-12-18 17:53:02,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-18 17:53:02,752 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2018-12-18 17:53:02,755 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-18 17:53:02,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-18 17:53:02,806 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-18 17:53:02,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-18 17:53:02,806 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-18 17:53:02,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-18 17:53:03,042 INFO L273 TraceCheckUtils]: 0: Hoare triple {22#true} havoc main_p1, main_p2, main_p3, main_p4, main_p5, main_p6, main_p7, main_p8;call main_p1 := malloc();call main_p2 := malloc();call main_p3 := malloc();call main_p4 := malloc();call main_p5 := malloc();call main_p6 := malloc();call main_p7 := malloc();call main_p8 := malloc();#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]; {24#(= (select |#memory_int| ULTIMATE.start_main_p1) 0)} is VALID [2018-12-18 17:53:03,048 INFO L273 TraceCheckUtils]: 1: Hoare triple {24#(= (select |#memory_int| ULTIMATE.start_main_p1) 0)} assume !(#memory_int[main_p1] <= 0); {23#false} is VALID [2018-12-18 17:53:03,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-18 17:53:03,053 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-18 17:53:03,053 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-12-18 17:53:03,053 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-18 17:53:03,058 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2018-12-18 17:53:03,060 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-12-18 17:53:03,064 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2018-12-18 17:53:03,088 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 2 edges. 2 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-12-18 17:53:03,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-18 17:53:03,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-18 17:53:03,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-18 17:53:03,099 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2018-12-18 17:53:03,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-18 17:53:03,734 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2018-12-18 17:53:03,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-18 17:53:03,734 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2018-12-18 17:53:03,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-18 17:53:03,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-18 17:53:03,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2018-12-18 17:53:03,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-18 17:53:03,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2018-12-18 17:53:03,745 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 51 transitions. [2018-12-18 17:53:03,883 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 51 edges. 51 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-12-18 17:53:03,898 INFO L225 Difference]: With dead ends: 37 [2018-12-18 17:53:03,898 INFO L226 Difference]: Without dead ends: 32 [2018-12-18 17:53:03,902 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 [2018-12-18 17:53:03,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-12-18 17:53:03,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 18. [2018-12-18 17:53:03,975 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-12-18 17:53:03,976 INFO L82 GeneralOperation]: Start isEquivalent. First operand 32 states. Second operand 18 states. [2018-12-18 17:53:03,977 INFO L74 IsIncluded]: Start isIncluded. First operand 32 states. Second operand 18 states. [2018-12-18 17:53:03,977 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 18 states. [2018-12-18 17:53:03,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-18 17:53:03,983 INFO L93 Difference]: Finished difference Result 32 states and 46 transitions. [2018-12-18 17:53:03,983 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-12-18 17:53:03,984 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-18 17:53:03,984 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-12-18 17:53:03,985 INFO L74 IsIncluded]: Start isIncluded. First operand 18 states. Second operand 32 states. [2018-12-18 17:53:03,985 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 32 states. [2018-12-18 17:53:03,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-18 17:53:03,990 INFO L93 Difference]: Finished difference Result 32 states and 46 transitions. [2018-12-18 17:53:03,990 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2018-12-18 17:53:03,991 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-18 17:53:03,991 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-12-18 17:53:03,991 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-12-18 17:53:03,992 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-12-18 17:53:03,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-12-18 17:53:03,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 33 transitions. [2018-12-18 17:53:03,997 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 33 transitions. Word has length 2 [2018-12-18 17:53:03,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-18 17:53:03,997 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 33 transitions. [2018-12-18 17:53:03,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-18 17:53:03,998 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 33 transitions. [2018-12-18 17:53:03,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-12-18 17:53:03,998 INFO L394 BasicCegarLoop]: Found error trace [2018-12-18 17:53:03,999 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-12-18 17:53:03,999 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT]=== [2018-12-18 17:53:04,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-18 17:53:04,000 INFO L82 PathProgramCache]: Analyzing trace with hash 30818, now seen corresponding path program 1 times [2018-12-18 17:53:04,000 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-18 17:53:04,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-18 17:53:04,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-18 17:53:04,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-18 17:53:04,002 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-18 17:53:04,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-18 17:53:04,364 INFO L273 TraceCheckUtils]: 0: Hoare triple {150#true} havoc main_p1, main_p2, main_p3, main_p4, main_p5, main_p6, main_p7, main_p8;call main_p1 := malloc();call main_p2 := malloc();call main_p3 := malloc();call main_p4 := malloc();call main_p5 := malloc();call main_p6 := malloc();call main_p7 := malloc();call main_p8 := malloc();#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]; {152#(and (or (= 0 (select (store |#memory_int| ULTIMATE.start_main_p8 (+ (select |#memory_int| ULTIMATE.start_main_p8) (- 1))) ULTIMATE.start_main_p1)) (= ULTIMATE.start_main_p1 ULTIMATE.start_main_p8)) (or (not (= ULTIMATE.start_main_p1 ULTIMATE.start_main_p8)) (= (select |#memory_int| ULTIMATE.start_main_p8) 0)))} is VALID [2018-12-18 17:53:04,376 INFO L273 TraceCheckUtils]: 1: Hoare triple {152#(and (or (= 0 (select (store |#memory_int| ULTIMATE.start_main_p8 (+ (select |#memory_int| ULTIMATE.start_main_p8) (- 1))) ULTIMATE.start_main_p1)) (= ULTIMATE.start_main_p1 ULTIMATE.start_main_p8)) (or (not (= ULTIMATE.start_main_p1 ULTIMATE.start_main_p8)) (= (select |#memory_int| ULTIMATE.start_main_p8) 0)))} #memory_int := #memory_int[main_p8 := #memory_int[main_p8] - 1]; {153#(<= (select |#memory_int| ULTIMATE.start_main_p1) 0)} is VALID [2018-12-18 17:53:04,391 INFO L273 TraceCheckUtils]: 2: Hoare triple {153#(<= (select |#memory_int| ULTIMATE.start_main_p1) 0)} assume !(#memory_int[main_p1] <= 0); {151#false} is VALID [2018-12-18 17:53:04,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-18 17:53:04,392 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-18 17:53:04,392 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-18 17:53:04,393 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2018-12-18 17:53:04,396 INFO L207 CegarAbsIntRunner]: [0], [32], [35] [2018-12-18 17:53:04,442 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-18 17:53:04,443 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-18 17:53:04,476 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:140) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:107) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:425) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:416) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:140) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.applyInternally(CompoundDomainPostOperator.java:306) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:131) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.lambda$17(DisjunctiveAbstractState.java:323) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.mapCollection(DisjunctiveAbstractState.java:519) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.apply(DisjunctiveAbstractState.java:323) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateAbstractPost(FixpointEngine.java:249) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateFixpoint(FixpointEngine.java:134) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.run(FixpointEngine.java:105) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.tool.AbstractInterpreter.runWithoutTimeoutAndResults(AbstractInterpreter.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.generateFixpoints(CegarAbsIntRunner.java:222) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.constructInterpolantGenerator(BaseTaipanRefinementStrategy.java:382) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getInterpolantGenerator(BaseTaipanRefinementStrategy.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:380) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.handleInfeasibleCase(BaseRefinementStrategy.java:296) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:206) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:456) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) 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) [2018-12-18 17:53:04,480 INFO L168 Benchmark]: Toolchain (without parser) took 2805.61 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 95.2 MB). Peak memory consumption was 95.2 MB. Max. memory is 7.1 GB. [2018-12-18 17:53:04,482 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.29 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-12-18 17:53:04,483 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-12-18 17:53:04,484 INFO L168 Benchmark]: Boogie Preprocessor took 41.64 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-12-18 17:53:04,484 INFO L168 Benchmark]: RCFGBuilder took 842.17 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-12-18 17:53:04,485 INFO L168 Benchmark]: TraceAbstraction took 1843.76 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-12-18 17:53:04,490 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 0.29 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 71.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 41.64 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 842.17 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1843.76 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: null: de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:140) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...