java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --traceabstraction.dump.automata.to.the.following.directory dump -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-memsafety/selectionsort_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-c5b1954-m [2018-10-10 11:24:20,135 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 11:24:20,137 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 11:24:20,151 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 11:24:20,151 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 11:24:20,154 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 11:24:20,155 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 11:24:20,158 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 11:24:20,161 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 11:24:20,162 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 11:24:20,168 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-10 11:24:20,168 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-10 11:24:20,169 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-10 11:24:20,174 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-10 11:24:20,175 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-10 11:24:20,176 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-10 11:24:20,177 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-10 11:24:20,181 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-10 11:24:20,182 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-10 11:24:20,187 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-10 11:24:20,188 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-10 11:24:20,192 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-10 11:24:20,196 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-10 11:24:20,210 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-10-10 11:24:20,236 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 11:24:20,238 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 11:24:20,239 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-10 11:24:20,239 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-10 11:24:20,240 INFO L133 SettingsManager]: * Use SBE=true [2018-10-10 11:24:20,240 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-10 11:24:20,240 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-10 11:24:20,240 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-10 11:24:20,241 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-10 11:24:20,241 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-10 11:24:20,241 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-10 11:24:20,241 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-10-10 11:24:20,241 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-10-10 11:24:20,242 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-10-10 11:24:20,243 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-10 11:24:20,243 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-10 11:24:20,243 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 11:24:20,243 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-10 11:24:20,244 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-10 11:24:20,244 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-10 11:24:20,244 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-10 11:24:20,244 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 11:24:20,244 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-10 11:24:20,246 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-10 11:24:20,246 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-10 11:24:20,246 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Dump automata to the following directory -> dump [2018-10-10 11:24:20,313 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 11:24:20,330 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 11:24:20,335 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 11:24:20,336 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-10 11:24:20,337 INFO L276 PluginConnector]: CDTParser initialized [2018-10-10 11:24:20,337 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/selectionsort_unsafe_false-valid-deref.i [2018-10-10 11:24:20,628 INFO L217 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ecf96b86/39c753cfeaa441e1bef9df0939c1429a/FLAG3f3a5a6cb [2018-10-10 11:24:20,848 INFO L289 CDTParser]: Found 1 translation units. [2018-10-10 11:24:20,849 INFO L157 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-memsafety/selectionsort_unsafe_false-valid-deref.i [2018-10-10 11:24:20,857 INFO L337 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ecf96b86/39c753cfeaa441e1bef9df0939c1429a/FLAG3f3a5a6cb [2018-10-10 11:24:20,872 INFO L345 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ecf96b86/39c753cfeaa441e1bef9df0939c1429a [2018-10-10 11:24:20,883 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 11:24:20,885 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-10 11:24:20,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-10 11:24:20,886 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-10 11:24:20,890 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-10 11:24:20,891 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 11:24:20" (1/1) ... [2018-10-10 11:24:20,895 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c7564d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:24:20, skipping insertion in model container [2018-10-10 11:24:20,895 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 11:24:20" (1/1) ... [2018-10-10 11:24:20,905 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-10 11:24:20,926 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-10 11:24:21,107 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-10 11:24:21,120 INFO L189 MainTranslator]: Completed pre-run [2018-10-10 11:24:21,141 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-10 11:24:21,160 INFO L193 MainTranslator]: Completed translation [2018-10-10 11:24:21,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:24:21 WrapperNode [2018-10-10 11:24:21,161 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-10 11:24:21,162 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-10 11:24:21,162 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-10 11:24:21,162 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-10 11:24:21,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:24:21" (1/1) ... [2018-10-10 11:24:21,183 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:24:21" (1/1) ... [2018-10-10 11:24:21,211 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-10 11:24:21,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 11:24:21,212 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 11:24:21,212 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 11:24:21,223 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:24:21" (1/1) ... [2018-10-10 11:24:21,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:24:21" (1/1) ... [2018-10-10 11:24:21,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:24:21" (1/1) ... [2018-10-10 11:24:21,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:24:21" (1/1) ... [2018-10-10 11:24:21,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:24:21" (1/1) ... [2018-10-10 11:24:21,249 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:24:21" (1/1) ... [2018-10-10 11:24:21,250 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:24:21" (1/1) ... [2018-10-10 11:24:21,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 11:24:21,253 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 11:24:21,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 11:24:21,254 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 11:24:21,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:24:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-10 11:24:21,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 11:24:21,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 11:24:21,930 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 11:24:21,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 11:24:21 BoogieIcfgContainer [2018-10-10 11:24:21,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 11:24:21,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 11:24:21,933 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 11:24:21,936 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 11:24:21,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 11:24:20" (1/3) ... [2018-10-10 11:24:21,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a3e19a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 11:24:21, skipping insertion in model container [2018-10-10 11:24:21,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:24:21" (2/3) ... [2018-10-10 11:24:21,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a3e19a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 11:24:21, skipping insertion in model container [2018-10-10 11:24:21,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 11:24:21" (3/3) ... [2018-10-10 11:24:21,940 INFO L112 eAbstractionObserver]: Analyzing ICFG selectionsort_unsafe_false-valid-deref.i [2018-10-10 11:24:21,951 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-10 11:24:21,962 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2018-10-10 11:24:21,980 INFO L257 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2018-10-10 11:24:22,009 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 11:24:22,010 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 11:24:22,011 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 11:24:22,011 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-10 11:24:22,011 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 11:24:22,011 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 11:24:22,011 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 11:24:22,012 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 11:24:22,012 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 11:24:22,029 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2018-10-10 11:24:22,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-10-10 11:24:22,038 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 11:24:22,039 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-10-10 11:24:22,042 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK]=== [2018-10-10 11:24:22,049 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 11:24:22,049 INFO L82 PathProgramCache]: Analyzing trace with hash 28747386, now seen corresponding path program 1 times [2018-10-10 11:24:22,051 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 11:24:22,052 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 11:24:22,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 11:24:22,109 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 11:24:22,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 11:24:22,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 11:24:22,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 11:24:22,194 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 11:24:22,194 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-10 11:24:22,198 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-10 11:24:22,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-10 11:24:22,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-10 11:24:22,218 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2018-10-10 11:24:22,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 11:24:22,235 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2018-10-10 11:24:22,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-10 11:24:22,237 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2018-10-10 11:24:22,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 11:24:22,249 INFO L225 Difference]: With dead ends: 39 [2018-10-10 11:24:22,249 INFO L226 Difference]: Without dead ends: 37 [2018-10-10 11:24:22,252 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-10 11:24:22,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-10 11:24:22,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-10-10 11:24:22,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-10 11:24:22,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2018-10-10 11:24:22,293 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 5 [2018-10-10 11:24:22,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 11:24:22,294 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2018-10-10 11:24:22,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-10 11:24:22,295 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2018-10-10 11:24:22,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-10 11:24:22,295 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 11:24:22,295 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-10-10 11:24:22,296 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK]=== [2018-10-10 11:24:22,297 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 11:24:22,297 INFO L82 PathProgramCache]: Analyzing trace with hash 889540072, now seen corresponding path program 1 times [2018-10-10 11:24:22,297 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 11:24:22,298 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 11:24:22,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 11:24:22,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 11:24:22,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 11:24:22,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 11:24:22,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 11:24:22,384 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 11:24:22,384 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-10 11:24:22,389 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-10 11:24:22,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-10 11:24:22,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 11:24:22,391 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 3 states. [2018-10-10 11:24:22,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 11:24:22,691 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2018-10-10 11:24:22,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-10 11:24:22,692 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2018-10-10 11:24:22,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 11:24:22,693 INFO L225 Difference]: With dead ends: 36 [2018-10-10 11:24:22,693 INFO L226 Difference]: Without dead ends: 34 [2018-10-10 11:24:22,694 INFO L605 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 [2018-10-10 11:24:22,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-10-10 11:24:22,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-10-10 11:24:22,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-10 11:24:22,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2018-10-10 11:24:22,699 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 6 [2018-10-10 11:24:22,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 11:24:22,700 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2018-10-10 11:24:22,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-10 11:24:22,700 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2018-10-10 11:24:22,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-10 11:24:22,701 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 11:24:22,701 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-10 11:24:22,701 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK]=== [2018-10-10 11:24:22,702 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 11:24:22,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1805952520, now seen corresponding path program 1 times [2018-10-10 11:24:22,702 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 11:24:22,702 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 11:24:22,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 11:24:22,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 11:24:22,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 11:24:22,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-10 11:24:22,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-10 11:24:22,753 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-10 11:24:22,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.10 11:24:22 BoogieIcfgContainer [2018-10-10 11:24:22,778 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-10 11:24:22,779 INFO L168 Benchmark]: Toolchain (without parser) took 1895.63 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 674.2 MB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -678.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 11:24:22,782 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 11:24:22,782 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.12 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-10-10 11:24:22,783 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.57 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 11:24:22,784 INFO L168 Benchmark]: Boogie Preprocessor took 41.65 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 11:24:22,784 INFO L168 Benchmark]: RCFGBuilder took 677.96 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 674.2 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -717.5 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2018-10-10 11:24:22,785 INFO L168 Benchmark]: TraceAbstraction took 846.23 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. [2018-10-10 11:24:22,790 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 275.12 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.57 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 41.65 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 677.96 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 674.2 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -717.5 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 846.23 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 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: [L20] int *a; [L21] int array_size = __VERIFIER_nondet_int(); [L22] CALL SelectionSort(a, array_size) [L4] int i; [L5] i = 0 [L5] COND TRUE i < array_size - 1 [L7] int j, min, temp; [L8] min = i [L9] j = i+1 [L9] COND TRUE j < array_size [L11] CALL a[j] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 13 error locations. UNSAFE Result, 0.7s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 61 SDtfs, 33 SDslu, 0 SDs, 0 SdLazy, 19 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred 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, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...