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/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memset2_false-valid-deref-write.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 17:14:55,716 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 17:14:55,717 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 17:14:55,733 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 17:14:55,733 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 17:14:55,734 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 17:14:55,735 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 17:14:55,737 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 17:14:55,739 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 17:14:55,740 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 17:14:55,741 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 17:14:55,741 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 17:14:55,742 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 17:14:55,743 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 17:14:55,744 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 17:14:55,747 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 17:14:55,749 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 17:14:55,751 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 17:14:55,753 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 17:14:55,754 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 17:14:55,756 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 17:14:55,757 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 17:14:55,757 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 17:14:55,758 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 17:14:55,759 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 17:14:55,760 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 17:14:55,761 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 17:14:55,761 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 17:14:55,762 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 17:14:55,762 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 17:14:55,762 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 17:14:55,763 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf [2018-01-24 17:14:55,772 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 17:14:55,772 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 17:14:55,773 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 17:14:55,773 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 17:14:55,773 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 17:14:55,773 INFO L133 SettingsManager]: * Deactivate Weak Equivalences=true [2018-01-24 17:14:55,773 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 17:14:55,773 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 17:14:55,774 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 17:14:55,774 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 17:14:55,774 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 17:14:55,774 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 17:14:55,774 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 17:14:55,775 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 17:14:55,775 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 17:14:55,775 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 17:14:55,775 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 17:14:55,775 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 17:14:55,775 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 17:14:55,775 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 17:14:55,775 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 17:14:55,776 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 17:14:55,776 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 17:14:55,776 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 17:14:55,776 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 17:14:55,777 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 17:14:55,777 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 17:14:55,777 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 17:14:55,777 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 17:14:55,777 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 17:14:55,777 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 17:14:55,777 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 17:14:55,777 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 17:14:55,778 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 17:14:55,778 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 17:14:55,778 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 17:14:55,812 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 17:14:55,823 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 17:14:55,826 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 17:14:55,827 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 17:14:55,828 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 17:14:55,828 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memset2_false-valid-deref-write.c [2018-01-24 17:14:55,927 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 17:14:55,931 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 17:14:55,932 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 17:14:55,932 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 17:14:55,937 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 17:14:55,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 05:14:55" (1/1) ... [2018-01-24 17:14:55,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70063e1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:14:55, skipping insertion in model container [2018-01-24 17:14:55,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 05:14:55" (1/1) ... [2018-01-24 17:14:55,954 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 17:14:55,968 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 17:14:56,075 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 17:14:56,089 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 17:14:56,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:14:56 WrapperNode [2018-01-24 17:14:56,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 17:14:56,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 17:14:56,095 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 17:14:56,095 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 17:14:56,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:14:56" (1/1) ... [2018-01-24 17:14:56,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:14:56" (1/1) ... [2018-01-24 17:14:56,114 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:14:56" (1/1) ... [2018-01-24 17:14:56,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:14:56" (1/1) ... [2018-01-24 17:14:56,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:14:56" (1/1) ... [2018-01-24 17:14:56,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:14:56" (1/1) ... [2018-01-24 17:14:56,121 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:14:56" (1/1) ... [2018-01-24 17:14:56,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 17:14:56,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 17:14:56,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 17:14:56,123 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 17:14:56,125 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:14:56" (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 [2018-01-24 17:14:56,187 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 17:14:56,187 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 17:14:56,187 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 17:14:56,187 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 17:14:56,187 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 17:14:56,187 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 17:14:56,187 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2018-01-24 17:14:56,188 INFO L136 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2018-01-24 17:14:56,188 INFO L128 BoogieDeclarations]: Found specification of procedure memset [2018-01-24 17:14:56,188 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 17:14:56,188 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 17:14:56,188 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 17:14:56,262 WARN L455 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2018-01-24 17:14:56,317 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 17:14:56,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 05:14:56 BoogieIcfgContainer [2018-01-24 17:14:56,318 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 17:14:56,318 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 17:14:56,319 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 17:14:56,320 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 17:14:56,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 05:14:55" (1/3) ... [2018-01-24 17:14:56,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a155297 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 05:14:56, skipping insertion in model container [2018-01-24 17:14:56,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:14:56" (2/3) ... [2018-01-24 17:14:56,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a155297 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 05:14:56, skipping insertion in model container [2018-01-24 17:14:56,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 05:14:56" (3/3) ... [2018-01-24 17:14:56,325 INFO L105 eAbstractionObserver]: Analyzing ICFG memset2_false-valid-deref-write.c [2018-01-24 17:14:56,331 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 17:14:56,337 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-24 17:14:56,379 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 17:14:56,379 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 17:14:56,379 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 17:14:56,379 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 17:14:56,380 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 17:14:56,380 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 17:14:56,380 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 17:14:56,380 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 17:14:56,381 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 17:14:56,394 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-01-24 17:14:56,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-01-24 17:14:56,399 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:14:56,399 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-01-24 17:14:56,399 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-24 17:14:56,403 INFO L82 PathProgramCache]: Analyzing trace with hash 682221498, now seen corresponding path program 1 times [2018-01-24 17:14:56,405 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:14:56,446 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:14:56,447 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:14:56,447 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:14:56,447 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:14:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:14:56,499 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:14:56,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 17:14:56,547 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:14:56,547 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 17:14:56,548 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:14:56,550 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 17:14:56,564 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 17:14:56,565 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 17:14:56,568 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2018-01-24 17:14:56,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:14:56,614 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-01-24 17:14:56,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 17:14:56,616 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-01-24 17:14:56,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:14:56,630 INFO L225 Difference]: With dead ends: 22 [2018-01-24 17:14:56,630 INFO L226 Difference]: Without dead ends: 18 [2018-01-24 17:14:56,634 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 17:14:56,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-01-24 17:14:56,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-01-24 17:14:56,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-01-24 17:14:56,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-01-24 17:14:56,677 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 7 [2018-01-24 17:14:56,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:14:56,678 INFO L432 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-01-24 17:14:56,678 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 17:14:56,678 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-01-24 17:14:56,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-01-24 17:14:56,679 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:14:56,679 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-01-24 17:14:56,679 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-24 17:14:56,679 INFO L82 PathProgramCache]: Analyzing trace with hash 682221499, now seen corresponding path program 1 times [2018-01-24 17:14:56,680 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:14:56,681 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:14:56,681 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:14:56,681 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:14:56,681 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:14:56,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-24 17:14:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-24 17:14:56,808 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-24 17:14:56,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.01 05:14:56 BoogieIcfgContainer [2018-01-24 17:14:56,825 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-24 17:14:56,826 INFO L168 Benchmark]: Toolchain (without parser) took 898.36 ms. Allocated memory was 303.6 MB in the beginning and 460.3 MB in the end (delta: 156.8 MB). Free memory was 264.5 MB in the beginning and 432.9 MB in the end (delta: -168.4 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 17:14:56,828 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 303.6 MB. Free memory is still 269.4 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 17:14:56,828 INFO L168 Benchmark]: CACSL2BoogieTranslator took 163.31 ms. Allocated memory is still 303.6 MB. Free memory was 263.5 MB in the beginning and 256.4 MB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 5.3 GB. [2018-01-24 17:14:56,829 INFO L168 Benchmark]: Boogie Preprocessor took 27.17 ms. Allocated memory is still 303.6 MB. Free memory was 256.4 MB in the beginning and 254.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-24 17:14:56,830 INFO L168 Benchmark]: RCFGBuilder took 195.02 ms. Allocated memory is still 303.6 MB. Free memory was 254.4 MB in the beginning and 242.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 5.3 GB. [2018-01-24 17:14:56,830 INFO L168 Benchmark]: TraceAbstraction took 506.56 ms. Allocated memory was 303.6 MB in the beginning and 460.3 MB in the end (delta: 156.8 MB). Free memory was 241.3 MB in the beginning and 432.9 MB in the end (delta: -191.7 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 17:14:56,833 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 303.6 MB. Free memory is still 269.4 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 163.31 ms. Allocated memory is still 303.6 MB. Free memory was 263.5 MB in the beginning and 256.4 MB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 27.17 ms. Allocated memory is still 303.6 MB. Free memory was 256.4 MB in the beginning and 254.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 195.02 ms. Allocated memory is still 303.6 MB. Free memory was 254.4 MB in the beginning and 242.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 5.3 GB. * TraceAbstraction took 506.56 ms. Allocated memory was 303.6 MB in the beginning and 460.3 MB in the end (delta: 156.8 MB). Free memory was 241.3 MB in the beginning and 432.9 MB in the end (delta: -191.7 MB). There was no memory consumed. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L21] FCALL struct compstat cstats ; VAL [cstats={43:0}] [L22] FCALL memset((void *)(& cstats), 0, 41UL) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 3 error locations. UNSAFE Result, 0.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 19 SDtfs, 2 SDslu, 10 SDs, 0 SdLazy, 9 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 60 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/memset2_false-valid-deref-write.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-24_17-14-56-843.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memset2_false-valid-deref-write.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-24_17-14-56-843.csv Received shutdown request...