./Ultimate.py --spec /storage/repos/svcomp/c/properties/valid-memsafety.prp --file /storage/repos/svcomp/c/memsafety-ext3/derefAfterFree1_false-valid-deref.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2e94e6aa Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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 -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/svcomp/c/memsafety-ext3/derefAfterFree1_false-valid-deref.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d452f938d74713dbff7e0330f8ef393409d67ffe ............................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.24-2e94e6a [2019-01-01 19:53:57,220 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-01 19:53:57,222 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-01 19:53:57,234 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-01 19:53:57,235 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-01 19:53:57,236 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-01 19:53:57,238 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-01 19:53:57,240 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-01 19:53:57,242 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-01 19:53:57,243 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-01 19:53:57,244 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-01 19:53:57,244 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-01 19:53:57,246 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-01 19:53:57,247 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-01 19:53:57,249 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-01 19:53:57,249 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-01 19:53:57,251 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-01 19:53:57,252 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-01 19:53:57,255 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-01 19:53:57,257 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-01 19:53:57,258 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-01 19:53:57,259 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-01 19:53:57,262 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-01 19:53:57,263 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-01 19:53:57,263 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-01 19:53:57,264 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-01 19:53:57,265 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-01 19:53:57,266 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-01 19:53:57,267 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-01 19:53:57,269 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-01 19:53:57,269 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-01 19:53:57,270 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-01 19:53:57,270 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-01 19:53:57,270 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-01 19:53:57,272 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-01 19:53:57,273 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-01 19:53:57,273 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-01-01 19:53:57,297 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-01 19:53:57,297 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-01 19:53:57,301 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-01 19:53:57,301 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-01 19:53:57,301 INFO L133 SettingsManager]: * Use SBE=true [2019-01-01 19:53:57,302 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-01 19:53:57,302 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-01 19:53:57,302 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-01 19:53:57,302 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-01 19:53:57,302 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-01 19:53:57,302 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-01 19:53:57,303 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-01-01 19:53:57,304 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2019-01-01 19:53:57,304 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-01-01 19:53:57,304 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-01 19:53:57,304 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-01 19:53:57,304 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-01 19:53:57,305 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-01 19:53:57,305 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-01 19:53:57,305 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-01 19:53:57,305 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-01 19:53:57,305 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-01 19:53:57,305 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-01 19:53:57,307 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-01 19:53:57,307 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-01 19:53:57,307 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-01 19:53:57,307 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.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d452f938d74713dbff7e0330f8ef393409d67ffe [2019-01-01 19:53:57,351 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-01 19:53:57,364 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-01 19:53:57,368 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-01 19:53:57,370 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-01 19:53:57,371 INFO L276 PluginConnector]: CDTParser initialized [2019-01-01 19:53:57,372 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/memsafety-ext3/derefAfterFree1_false-valid-deref.c [2019-01-01 19:53:57,432 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f40bf7358/bb0b40fd69a840078b5d0a905a3820a2/FLAGcb9b1682b [2019-01-01 19:53:57,845 INFO L307 CDTParser]: Found 1 translation units. [2019-01-01 19:53:57,846 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/memsafety-ext3/derefAfterFree1_false-valid-deref.c [2019-01-01 19:53:57,853 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f40bf7358/bb0b40fd69a840078b5d0a905a3820a2/FLAGcb9b1682b [2019-01-01 19:53:58,246 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f40bf7358/bb0b40fd69a840078b5d0a905a3820a2 [2019-01-01 19:53:58,249 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-01 19:53:58,251 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-01-01 19:53:58,252 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-01 19:53:58,252 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-01 19:53:58,256 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-01 19:53:58,257 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.01 07:53:58" (1/1) ... [2019-01-01 19:53:58,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5366f9c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 07:53:58, skipping insertion in model container [2019-01-01 19:53:58,260 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.01 07:53:58" (1/1) ... [2019-01-01 19:53:58,268 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-01 19:53:58,285 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-01 19:53:58,511 INFO L204 PostProcessor]: Analyzing one entry point: main [2019-01-01 19:53:58,528 INFO L191 MainTranslator]: Completed pre-run [2019-01-01 19:53:58,551 INFO L204 PostProcessor]: Analyzing one entry point: main [2019-01-01 19:53:58,577 INFO L195 MainTranslator]: Completed translation [2019-01-01 19:53:58,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 07:53:58 WrapperNode [2019-01-01 19:53:58,578 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-01 19:53:58,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-01 19:53:58,579 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-01 19:53:58,581 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-01 19:53:58,597 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 07:53:58" (1/1) ... [2019-01-01 19:53:58,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 07:53:58" (1/1) ... [2019-01-01 19:53:58,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 07:53:58" (1/1) ... [2019-01-01 19:53:58,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 07:53:58" (1/1) ... [2019-01-01 19:53:58,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 07:53:58" (1/1) ... [2019-01-01 19:53:58,619 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 07:53:58" (1/1) ... [2019-01-01 19:53:58,621 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 07:53:58" (1/1) ... [2019-01-01 19:53:58,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-01 19:53:58,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-01 19:53:58,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-01 19:53:58,624 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-01 19:53:58,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 07:53:58" (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 [2019-01-01 19:53:58,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-01-01 19:53:58,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-01 19:53:58,764 INFO L138 BoogieDeclarations]: Found implementation of procedure freePointer [2019-01-01 19:53:58,764 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-01-01 19:53:58,764 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-01-01 19:53:58,765 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-01-01 19:53:58,765 INFO L130 BoogieDeclarations]: Found specification of procedure freePointer [2019-01-01 19:53:58,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-01-01 19:53:58,766 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-01-01 19:53:58,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-01-01 19:53:58,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-01-01 19:53:58,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-01-01 19:53:58,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-01 19:53:58,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-01-01 19:53:59,045 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-01 19:53:59,045 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2019-01-01 19:53:59,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 07:53:59 BoogieIcfgContainer [2019-01-01 19:53:59,046 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-01 19:53:59,047 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-01 19:53:59,047 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-01 19:53:59,051 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-01 19:53:59,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.01 07:53:58" (1/3) ... [2019-01-01 19:53:59,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41297ee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.01 07:53:59, skipping insertion in model container [2019-01-01 19:53:59,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 07:53:58" (2/3) ... [2019-01-01 19:53:59,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41297ee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.01 07:53:59, skipping insertion in model container [2019-01-01 19:53:59,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 07:53:59" (3/3) ... [2019-01-01 19:53:59,056 INFO L112 eAbstractionObserver]: Analyzing ICFG derefAfterFree1_false-valid-deref.c [2019-01-01 19:53:59,070 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-01 19:53:59,090 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-01-01 19:53:59,124 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-01-01 19:53:59,165 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-01 19:53:59,166 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-01 19:53:59,166 INFO L383 AbstractCegarLoop]: Hoare is false [2019-01-01 19:53:59,166 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-01 19:53:59,167 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-01 19:53:59,167 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-01 19:53:59,167 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-01 19:53:59,167 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-01 19:53:59,167 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-01 19:53:59,183 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-01-01 19:53:59,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-01-01 19:53:59,194 INFO L394 BasicCegarLoop]: Found error trace [2019-01-01 19:53:59,195 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-01 19:53:59,198 INFO L423 AbstractCegarLoop]: === Iteration 1 === [freePointerErr2ASSERT_VIOLATIONMEMORY_FREE, freePointerErr1ASSERT_VIOLATIONMEMORY_FREE, freePointerErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-01 19:53:59,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 19:53:59,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1608321379, now seen corresponding path program 1 times [2019-01-01 19:53:59,207 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 19:53:59,208 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 19:53:59,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 19:53:59,254 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 19:53:59,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 19:53:59,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 19:53:59,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-01 19:53:59,454 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-01 19:53:59,454 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-01 19:53:59,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-01-01 19:53:59,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-01-01 19:53:59,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-01-01 19:53:59,476 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2019-01-01 19:53:59,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-01 19:53:59,573 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2019-01-01 19:53:59,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-01 19:53:59,575 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-01-01 19:53:59,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-01 19:53:59,585 INFO L225 Difference]: With dead ends: 24 [2019-01-01 19:53:59,585 INFO L226 Difference]: Without dead ends: 21 [2019-01-01 19:53:59,587 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-01-01 19:53:59,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-01-01 19:53:59,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-01-01 19:53:59,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-01-01 19:53:59,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2019-01-01 19:53:59,624 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 9 [2019-01-01 19:53:59,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-01 19:53:59,626 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2019-01-01 19:53:59,627 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-01-01 19:53:59,627 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2019-01-01 19:53:59,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-01-01 19:53:59,628 INFO L394 BasicCegarLoop]: Found error trace [2019-01-01 19:53:59,629 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-01 19:53:59,629 INFO L423 AbstractCegarLoop]: === Iteration 2 === [freePointerErr2ASSERT_VIOLATIONMEMORY_FREE, freePointerErr1ASSERT_VIOLATIONMEMORY_FREE, freePointerErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-01 19:53:59,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 19:53:59,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1681644769, now seen corresponding path program 1 times [2019-01-01 19:53:59,630 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 19:53:59,630 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 19:53:59,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 19:53:59,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 19:53:59,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 19:53:59,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 19:53:59,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-01 19:53:59,754 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-01 19:53:59,754 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-01 19:53:59,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-01-01 19:53:59,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-01-01 19:53:59,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-01-01 19:53:59,756 INFO L87 Difference]: Start difference. First operand 21 states and 20 transitions. Second operand 5 states. [2019-01-01 19:53:59,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-01 19:53:59,985 INFO L93 Difference]: Finished difference Result 20 states and 19 transitions. [2019-01-01 19:53:59,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-01 19:53:59,986 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-01-01 19:53:59,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-01 19:53:59,986 INFO L225 Difference]: With dead ends: 20 [2019-01-01 19:53:59,987 INFO L226 Difference]: Without dead ends: 20 [2019-01-01 19:53:59,988 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-01-01 19:53:59,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-01-01 19:53:59,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-01-01 19:53:59,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-01-01 19:53:59,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 19 transitions. [2019-01-01 19:53:59,992 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 19 transitions. Word has length 10 [2019-01-01 19:53:59,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-01 19:53:59,992 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 19 transitions. [2019-01-01 19:53:59,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-01-01 19:53:59,992 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 19 transitions. [2019-01-01 19:53:59,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-01-01 19:53:59,993 INFO L394 BasicCegarLoop]: Found error trace [2019-01-01 19:53:59,993 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-01 19:53:59,993 INFO L423 AbstractCegarLoop]: === Iteration 3 === [freePointerErr2ASSERT_VIOLATIONMEMORY_FREE, freePointerErr1ASSERT_VIOLATIONMEMORY_FREE, freePointerErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-01 19:53:59,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 19:53:59,994 INFO L82 PathProgramCache]: Analyzing trace with hash -591380251, now seen corresponding path program 1 times [2019-01-01 19:53:59,994 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 19:53:59,994 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 19:53:59,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 19:53:59,995 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 19:53:59,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 19:54:00,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 19:54:00,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-01 19:54:00,131 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-01 19:54:00,131 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-01 19:54:00,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-01-01 19:54:00,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-01-01 19:54:00,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-01-01 19:54:00,135 INFO L87 Difference]: Start difference. First operand 20 states and 19 transitions. Second operand 5 states. [2019-01-01 19:54:00,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-01 19:54:00,332 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2019-01-01 19:54:00,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-01 19:54:00,333 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-01-01 19:54:00,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-01 19:54:00,334 INFO L225 Difference]: With dead ends: 19 [2019-01-01 19:54:00,334 INFO L226 Difference]: Without dead ends: 19 [2019-01-01 19:54:00,335 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-01-01 19:54:00,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-01-01 19:54:00,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-01-01 19:54:00,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-01-01 19:54:00,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2019-01-01 19:54:00,339 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 11 [2019-01-01 19:54:00,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-01 19:54:00,340 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2019-01-01 19:54:00,340 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-01-01 19:54:00,340 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2019-01-01 19:54:00,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-01-01 19:54:00,341 INFO L394 BasicCegarLoop]: Found error trace [2019-01-01 19:54:00,341 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-01 19:54:00,341 INFO L423 AbstractCegarLoop]: === Iteration 4 === [freePointerErr2ASSERT_VIOLATIONMEMORY_FREE, freePointerErr1ASSERT_VIOLATIONMEMORY_FREE, freePointerErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-01 19:54:00,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 19:54:00,342 INFO L82 PathProgramCache]: Analyzing trace with hash 146827991, now seen corresponding path program 1 times [2019-01-01 19:54:00,342 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 19:54:00,342 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 19:54:00,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 19:54:00,343 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 19:54:00,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 19:54:00,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 19:54:00,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 19:54:00,393 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-01 19:54:00,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.01 07:54:00 BoogieIcfgContainer [2019-01-01 19:54:00,416 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-01 19:54:00,416 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-01 19:54:00,416 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-01 19:54:00,416 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-01 19:54:00,417 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 07:53:59" (3/4) ... [2019-01-01 19:54:00,419 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2019-01-01 19:54:00,475 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-01 19:54:00,476 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-01 19:54:00,477 INFO L168 Benchmark]: Toolchain (without parser) took 2226.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -117.5 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. [2019-01-01 19:54:00,479 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 19:54:00,479 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.69 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-01 19:54:00,480 INFO L168 Benchmark]: Boogie Preprocessor took 44.80 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 19:54:00,481 INFO L168 Benchmark]: RCFGBuilder took 421.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -175.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 11.5 GB. [2019-01-01 19:54:00,482 INFO L168 Benchmark]: TraceAbstraction took 1368.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 47.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 11.5 GB. [2019-01-01 19:54:00,483 INFO L168 Benchmark]: Witness Printer took 59.67 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 19:54:00,487 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 326.69 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 44.80 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 421.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -175.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1368.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 47.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 11.5 GB. * Witness Printer took 59.67 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 14]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L10] int* p = malloc(10 * sizeof(int)); VAL [malloc(10 * sizeof(int))={-1:0}, p={-1:0}] [L12] CALL freePointer(p) VAL [p={-1:0}] [L6] free(p) VAL [p={-1:0}, p={-1:0}] [L6] free(p) VAL [p={-1:0}, p={-1:0}] [L6] free(p) [L12] RET freePointer(p) VAL [malloc(10 * sizeof(int))={-1:0}, p={-1:0}] [L14] p[0] = 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 6 error locations. UNSAFE Result, 1.2s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 43 SDtfs, 39 SDslu, 81 SDs, 0 SdLazy, 62 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 637 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...