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_imprecise.epf -i ../../../trunk/examples/svcomp/memsafety/test-0158_false-valid-free.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 00:32:06,432 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 00:32:06,434 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 00:32:06,449 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 00:32:06,449 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 00:32:06,450 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 00:32:06,451 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 00:32:06,453 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 00:32:06,455 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 00:32:06,456 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 00:32:06,457 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-01-21 00:32:06,479 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_imprecise.epf [2018-01-21 00:32:06,488 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 00:32:06,488 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 00:32:06,489 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 00:32:06,489 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 00:32:06,489 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 00:32:06,489 INFO L133 SettingsManager]: * Deactivate Weak Equivalences=true [2018-01-21 00:32:06,489 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 00:32:06,489 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 00:32:06,490 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 00:32:06,490 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 00:32:06,490 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 00:32:06,490 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 00:32:06,491 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 00:32:06,491 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 00:32:06,491 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 00:32:06,491 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 00:32:06,491 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 00:32:06,491 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 00:32:06,491 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 00:32:06,491 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 00:32:06,491 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 00:32:06,492 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 00:32:06,492 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 00:32:06,492 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 00:32:06,492 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 00:32:06,492 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 00:32:06,493 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 00:32:06,493 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 00:32:06,493 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 00:32:06,493 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 00:32:06,493 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 00:32:06,493 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 00:32:06,493 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 00:32:06,493 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 00:32:06,494 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 00:32:06,494 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 00:32:06,494 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 00:32:06,494 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 00:32:06,495 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 00:32:06,528 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 00:32:06,538 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 00:32:06,541 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 00:32:06,542 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 00:32:06,543 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 00:32:06,543 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety/test-0158_false-valid-free.i [2018-01-21 00:32:06,712 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 00:32:06,716 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 00:32:06,716 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 00:32:06,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 00:32:06,721 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 00:32:06,722 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 12:32:06" (1/1) ... [2018-01-21 00:32:06,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@669ff2ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:32:06, skipping insertion in model container [2018-01-21 00:32:06,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 12:32:06" (1/1) ... [2018-01-21 00:32:06,739 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 00:32:06,777 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 00:32:06,887 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 00:32:06,905 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 00:32:06,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:32:06 WrapperNode [2018-01-21 00:32:06,916 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 00:32:06,917 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 00:32:06,917 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 00:32:06,917 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 00:32:06,934 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:32:06" (1/1) ... [2018-01-21 00:32:06,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:32:06" (1/1) ... [2018-01-21 00:32:06,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:32:06" (1/1) ... [2018-01-21 00:32:06,943 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:32:06" (1/1) ... [2018-01-21 00:32:06,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:32:06" (1/1) ... [2018-01-21 00:32:06,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:32:06" (1/1) ... [2018-01-21 00:32:06,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:32:06" (1/1) ... [2018-01-21 00:32:06,951 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 00:32:06,952 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 00:32:06,952 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 00:32:06,952 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 00:32:06,953 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:32:06" (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 00:32:06,999 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 00:32:06,999 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 00:32:07,000 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 00:32:07,000 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 00:32:07,000 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 00:32:07,000 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-21 00:32:07,000 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-21 00:32:07,000 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 00:32:07,000 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 00:32:07,001 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 00:32:07,001 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 00:32:07,001 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 00:32:07,001 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 00:32:07,001 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 00:32:07,001 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 00:32:07,142 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 00:32:07,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 12:32:07 BoogieIcfgContainer [2018-01-21 00:32:07,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 00:32:07,143 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 00:32:07,144 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 00:32:07,146 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 00:32:07,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 12:32:06" (1/3) ... [2018-01-21 00:32:07,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@388bd8a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 12:32:07, skipping insertion in model container [2018-01-21 00:32:07,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:32:06" (2/3) ... [2018-01-21 00:32:07,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@388bd8a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 12:32:07, skipping insertion in model container [2018-01-21 00:32:07,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 12:32:07" (3/3) ... [2018-01-21 00:32:07,149 INFO L105 eAbstractionObserver]: Analyzing ICFG test-0158_false-valid-free.i [2018-01-21 00:32:07,155 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 00:32:07,161 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-21 00:32:07,207 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:32:07,207 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:32:07,207 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:32:07,207 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:32:07,207 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:32:07,208 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:32:07,208 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:32:07,208 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 00:32:07,209 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:32:07,228 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2018-01-21 00:32:07,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 00:32:07,233 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:32:07,234 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 00:32:07,235 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 00:32:07,240 INFO L82 PathProgramCache]: Analyzing trace with hash 51896, now seen corresponding path program 1 times [2018-01-21 00:32:07,243 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:32:07,288 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:32:07,288 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:32:07,288 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:32:07,288 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:32:07,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:32:07,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:32:07,339 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 00:32:07,345 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:32:07,350 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:32:07,350 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:32:07,350 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:32:07,350 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:32:07,350 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:32:07,350 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:32:07,350 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:32:07,350 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 00:32:07,350 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:32:07,352 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2018-01-21 00:32:07,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-21 00:32:07,353 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:32:07,353 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 00:32:07,353 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:32:07,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1466301826, now seen corresponding path program 1 times [2018-01-21 00:32:07,354 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:32:07,355 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:32:07,355 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:32:07,355 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:32:07,356 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:32:07,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:32:07,397 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:32:07,803 WARN L146 SmtUtils]: Spent 108ms on a formula simplification. DAG size of input: 16 DAG size of output 11 [2018-01-21 00:32:07,852 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 00:32:07,854 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:32:07,855 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-21 00:32:07,855 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:32:07,857 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-21 00:32:07,867 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-21 00:32:07,868 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-01-21 00:32:07,870 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 8 states. [2018-01-21 00:32:08,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:32:08,164 INFO L93 Difference]: Finished difference Result 26 states and 25 transitions. [2018-01-21 00:32:08,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-21 00:32:08,166 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2018-01-21 00:32:08,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:32:08,174 INFO L225 Difference]: With dead ends: 26 [2018-01-21 00:32:08,174 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 00:32:08,177 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-01-21 00:32:08,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 00:32:08,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 00:32:08,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 00:32:08,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 00:32:08,205 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2018-01-21 00:32:08,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:32:08,206 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 00:32:08,206 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-21 00:32:08,206 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 00:32:08,206 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 00:32:08,209 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:32:08,209 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:32:08,209 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:32:08,209 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:32:08,209 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:32:08,209 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:32:08,209 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:32:08,210 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 00:32:08,210 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:32:08,211 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2018-01-21 00:32:08,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-21 00:32:08,212 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:32:08,212 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 00:32:08,212 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 00:32:08,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1339254825, now seen corresponding path program 1 times [2018-01-21 00:32:08,212 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:32:08,214 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:32:08,214 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:32:08,214 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:32:08,214 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:32:08,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:32:08,233 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:32:08,329 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 00:32:08,330 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:32:08,330 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-21 00:32:08,330 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:32:08,330 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-21 00:32:08,330 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-21 00:32:08,330 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-01-21 00:32:08,331 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 8 states. [2018-01-21 00:32:08,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:32:08,489 INFO L93 Difference]: Finished difference Result 26 states and 25 transitions. [2018-01-21 00:32:08,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-21 00:32:08,490 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2018-01-21 00:32:08,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:32:08,490 INFO L225 Difference]: With dead ends: 26 [2018-01-21 00:32:08,490 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 00:32:08,491 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-01-21 00:32:08,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 00:32:08,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 00:32:08,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 00:32:08,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 00:32:08,492 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2018-01-21 00:32:08,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:32:08,492 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 00:32:08,492 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-21 00:32:08,493 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 00:32:08,493 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 00:32:08,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 12:32:08 BoogieIcfgContainer [2018-01-21 00:32:08,495 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 00:32:08,496 INFO L168 Benchmark]: Toolchain (without parser) took 1783.40 ms. Allocated memory was 304.6 MB in the beginning and 458.2 MB in the end (delta: 153.6 MB). Free memory was 260.8 MB in the beginning and 360.6 MB in the end (delta: -99.8 MB). Peak memory consumption was 53.8 MB. Max. memory is 5.3 GB. [2018-01-21 00:32:08,497 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 304.6 MB. Free memory is still 266.7 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 00:32:08,498 INFO L168 Benchmark]: CACSL2BoogieTranslator took 199.84 ms. Allocated memory is still 304.6 MB. Free memory was 259.8 MB in the beginning and 249.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 5.3 GB. [2018-01-21 00:32:08,498 INFO L168 Benchmark]: Boogie Preprocessor took 34.70 ms. Allocated memory is still 304.6 MB. Free memory was 249.5 MB in the beginning and 247.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 00:32:08,498 INFO L168 Benchmark]: RCFGBuilder took 190.83 ms. Allocated memory is still 304.6 MB. Free memory was 247.5 MB in the beginning and 233.4 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 5.3 GB. [2018-01-21 00:32:08,498 INFO L168 Benchmark]: TraceAbstraction took 1352.13 ms. Allocated memory was 304.6 MB in the beginning and 458.2 MB in the end (delta: 153.6 MB). Free memory was 233.4 MB in the beginning and 360.6 MB in the end (delta: -127.1 MB). Peak memory consumption was 26.5 MB. Max. memory is 5.3 GB. [2018-01-21 00:32:08,500 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 304.6 MB. Free memory is still 266.7 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 199.84 ms. Allocated memory is still 304.6 MB. Free memory was 259.8 MB in the beginning and 249.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 34.70 ms. Allocated memory is still 304.6 MB. Free memory was 249.5 MB in the beginning and 247.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 190.83 ms. Allocated memory is still 304.6 MB. Free memory was 247.5 MB in the beginning and 233.4 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1352.13 ms. Allocated memory was 304.6 MB in the beginning and 458.2 MB in the end (delta: 153.6 MB). Free memory was 233.4 MB in the beginning and 360.6 MB in the end (delta: -127.1 MB). Peak memory consumption was 26.5 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, 0.8s 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, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s 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, 0.4s 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, 0.2s 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, 0.1s 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, 0.0s 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_imprecise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_00-32-08-509.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_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_00-32-08-509.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_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_00-32-08-509.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_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_00-32-08-509.csv Received shutdown request...