java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf -i ../../../trunk/examples/svcomp/memsafety/test-0158_false-valid-free.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 05:37:46,574 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 05:37:46,575 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 05:37:46,591 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 05:37:46,591 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 05:37:46,592 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 05:37:46,593 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 05:37:46,595 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 05:37:46,597 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 05:37:46,598 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 05:37:46,599 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-01-21 05:37:46,623 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf [2018-01-21 05:37:46,632 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 05:37:46,633 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 05:37:46,634 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 05:37:46,634 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 05:37:46,634 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 05:37:46,634 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 05:37:46,634 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 05:37:46,635 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 05:37:46,636 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 05:37:46,636 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 05:37:46,636 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 05:37:46,636 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 05:37:46,637 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 05:37:46,637 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 05:37:46,637 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 05:37:46,637 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 05:37:46,637 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 05:37:46,638 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 05:37:46,638 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 05:37:46,638 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 05:37:46,638 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 05:37:46,638 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 05:37:46,639 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 05:37:46,639 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 05:37:46,639 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 05:37:46,639 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 05:37:46,640 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 05:37:46,640 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 05:37:46,640 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 05:37:46,640 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 05:37:46,640 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 05:37:46,641 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 05:37:46,641 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 05:37:46,641 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 05:37:46,641 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 05:37:46,641 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 05:37:46,642 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 05:37:46,643 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 05:37:46,643 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 05:37:46,685 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 05:37:46,700 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 05:37:46,704 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 05:37:46,706 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 05:37:46,707 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 05:37:46,708 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety/test-0158_false-valid-free.i [2018-01-21 05:37:46,906 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 05:37:46,911 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 05:37:46,912 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 05:37:46,912 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 05:37:46,917 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 05:37:46,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 05:37:46" (1/1) ... [2018-01-21 05:37:46,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54f9b563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:37:46, skipping insertion in model container [2018-01-21 05:37:46,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 05:37:46" (1/1) ... [2018-01-21 05:37:46,935 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 05:37:46,977 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 05:37:47,105 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 05:37:47,121 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 05:37:47,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:37:47 WrapperNode [2018-01-21 05:37:47,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 05:37:47,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 05:37:47,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 05:37:47,131 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 05:37:47,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:37:47" (1/1) ... [2018-01-21 05:37:47,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:37:47" (1/1) ... [2018-01-21 05:37:47,162 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:37:47" (1/1) ... [2018-01-21 05:37:47,162 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:37:47" (1/1) ... [2018-01-21 05:37:47,166 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:37:47" (1/1) ... [2018-01-21 05:37:47,168 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:37:47" (1/1) ... [2018-01-21 05:37:47,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:37:47" (1/1) ... [2018-01-21 05:37:47,171 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 05:37:47,172 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 05:37:47,172 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 05:37:47,172 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 05:37:47,173 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:37:47" (1/1) ... No working directory specified, using /storage/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 [2018-01-21 05:37:47,227 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 05:37:47,227 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 05:37:47,227 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 05:37:47,227 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 05:37:47,227 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 05:37:47,227 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-21 05:37:47,228 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-21 05:37:47,228 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 05:37:47,228 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 05:37:47,228 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 05:37:47,228 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 05:37:47,228 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 05:37:47,228 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 05:37:47,229 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 05:37:47,229 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 05:37:47,413 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 05:37:47,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 05:37:47 BoogieIcfgContainer [2018-01-21 05:37:47,414 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 05:37:47,415 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 05:37:47,415 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 05:37:47,417 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 05:37:47,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 05:37:46" (1/3) ... [2018-01-21 05:37:47,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26aabcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 05:37:47, skipping insertion in model container [2018-01-21 05:37:47,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:37:47" (2/3) ... [2018-01-21 05:37:47,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26aabcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 05:37:47, skipping insertion in model container [2018-01-21 05:37:47,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 05:37:47" (3/3) ... [2018-01-21 05:37:47,421 INFO L105 eAbstractionObserver]: Analyzing ICFG test-0158_false-valid-free.i [2018-01-21 05:37:47,428 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 05:37:47,433 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-21 05:37:47,479 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 05:37:47,479 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 05:37:47,479 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 05:37:47,480 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 05:37:47,480 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 05:37:47,480 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 05:37:47,480 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 05:37:47,480 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 05:37:47,481 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 05:37:47,495 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2018-01-21 05:37:47,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 05:37:47,501 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:37:47,502 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 05:37:47,502 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 05:37:47,508 INFO L82 PathProgramCache]: Analyzing trace with hash 51896, now seen corresponding path program 1 times [2018-01-21 05:37:47,511 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:37:47,559 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:37:47,559 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:37:47,559 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:37:47,559 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:37:47,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 05:37:47,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 05:37:47,613 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 05:37:47,619 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 05:37:47,625 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 05:37:47,625 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 05:37:47,626 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 05:37:47,626 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 05:37:47,626 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 05:37:47,626 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 05:37:47,626 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 05:37:47,626 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 05:37:47,626 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 05:37:47,628 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2018-01-21 05:37:47,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-21 05:37:47,628 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:37:47,629 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 05:37:47,629 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 05:37:47,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1466301826, now seen corresponding path program 1 times [2018-01-21 05:37:47,629 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:37:47,630 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:37:47,630 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:37:47,630 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:37:47,630 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:37:47,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:37:47,674 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:37:48,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 05:37:48,052 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:37:48,053 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-21 05:37:48,053 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:37:48,055 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-21 05:37:48,132 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-21 05:37:48,133 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-01-21 05:37:48,135 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 8 states. [2018-01-21 05:37:48,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:37:48,376 INFO L93 Difference]: Finished difference Result 26 states and 25 transitions. [2018-01-21 05:37:48,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-21 05:37:48,377 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2018-01-21 05:37:48,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:37:48,386 INFO L225 Difference]: With dead ends: 26 [2018-01-21 05:37:48,386 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 05:37:48,390 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-01-21 05:37:48,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 05:37:48,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 05:37:48,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 05:37:48,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 05:37:48,419 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2018-01-21 05:37:48,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:37:48,419 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 05:37:48,419 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-21 05:37:48,419 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 05:37:48,419 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 05:37:48,421 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 05:37:48,421 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 05:37:48,421 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 05:37:48,421 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 05:37:48,422 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 05:37:48,422 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 05:37:48,422 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 05:37:48,422 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 05:37:48,422 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 05:37:48,423 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2018-01-21 05:37:48,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-21 05:37:48,423 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:37:48,423 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 05:37:48,423 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 05:37:48,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1339254825, now seen corresponding path program 1 times [2018-01-21 05:37:48,424 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:37:48,425 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:37:48,425 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:37:48,425 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:37:48,425 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:37:48,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:37:48,442 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:37:48,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 05:37:48,614 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:37:48,615 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-21 05:37:48,615 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:37:48,615 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-21 05:37:48,615 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-21 05:37:48,615 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-01-21 05:37:48,615 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 8 states. [2018-01-21 05:37:48,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:37:48,789 INFO L93 Difference]: Finished difference Result 26 states and 25 transitions. [2018-01-21 05:37:48,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-21 05:37:48,789 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2018-01-21 05:37:48,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:37:48,790 INFO L225 Difference]: With dead ends: 26 [2018-01-21 05:37:48,790 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 05:37:48,791 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-01-21 05:37:48,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 05:37:48,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 05:37:48,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 05:37:48,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 05:37:48,791 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2018-01-21 05:37:48,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:37:48,792 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 05:37:48,792 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-21 05:37:48,792 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 05:37:48,792 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 05:37:48,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 05:37:48 BoogieIcfgContainer [2018-01-21 05:37:48,794 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 05:37:48,795 INFO L168 Benchmark]: Toolchain (without parser) took 1888.40 ms. Allocated memory was 306.7 MB in the beginning and 464.0 MB in the end (delta: 157.3 MB). Free memory was 264.0 MB in the beginning and 371.5 MB in the end (delta: -107.4 MB). Peak memory consumption was 49.8 MB. Max. memory is 5.3 GB. [2018-01-21 05:37:48,796 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 306.7 MB. Free memory is still 270.0 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 05:37:48,796 INFO L168 Benchmark]: CACSL2BoogieTranslator took 218.79 ms. Allocated memory is still 306.7 MB. Free memory was 264.0 MB in the beginning and 252.1 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB. [2018-01-21 05:37:48,796 INFO L168 Benchmark]: Boogie Preprocessor took 40.71 ms. Allocated memory is still 306.7 MB. Free memory is still 252.1 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 05:37:48,797 INFO L168 Benchmark]: RCFGBuilder took 242.12 ms. Allocated memory is still 306.7 MB. Free memory was 252.1 MB in the beginning and 237.5 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 5.3 GB. [2018-01-21 05:37:48,797 INFO L168 Benchmark]: TraceAbstraction took 1379.56 ms. Allocated memory was 306.7 MB in the beginning and 464.0 MB in the end (delta: 157.3 MB). Free memory was 237.5 MB in the beginning and 371.5 MB in the end (delta: -133.9 MB). Peak memory consumption was 23.3 MB. Max. memory is 5.3 GB. [2018-01-21 05:37:48,798 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 306.7 MB. Free memory is still 270.0 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 218.79 ms. Allocated memory is still 306.7 MB. Free memory was 264.0 MB in the beginning and 252.1 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 40.71 ms. Allocated memory is still 306.7 MB. Free memory is still 252.1 MB. There was no memory consumed. Max. memory is 5.3 GB. * RCFGBuilder took 242.12 ms. Allocated memory is still 306.7 MB. Free memory was 252.1 MB in the beginning and 237.5 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1379.56 ms. Allocated memory was 306.7 MB in the beginning and 464.0 MB in the end (delta: 157.3 MB). Free memory was 237.5 MB in the beginning and 371.5 MB in the end (delta: -133.9 MB). Peak memory consumption was 23.3 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.initErr0EnsuresViolation CFG has 3 procedures, 26 locations, 3 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 1]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 3 procedures, 26 locations, 3 error locations. SAFE Result, 0.7s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9 SDtfs, 10 SDslu, 33 SDs, 0 SdLazy, 35 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 2478 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 740]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation CFG has 3 procedures, 26 locations, 3 error locations. SAFE Result, 0.3s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9 SDtfs, 13 SDslu, 26 SDs, 0 SdLazy, 34 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 2204 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0158_false-valid-free.i_mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_05-37-48-805.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0158_false-valid-free.i_mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_05-37-48-805.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0158_false-valid-free.i_mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_05-37-48-805.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0158_false-valid-free.i_mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_05-37-48-805.csv Received shutdown request...