./Ultimate.py --spec /storage/repos/svcomp/c/properties/valid-memsafety.prp --file /storage/repos/svcomp/c/ldv-memsafety/memset2_false-valid-deref-write.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0ed9222f 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/ldv-memsafety/memset2_false-valid-deref-write.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 504b8754db5656e557502f2f9e958956c9b0cd94 ........................................................................................................................................................................................................................................................ 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 0.1.24-0ed9222-m [2019-01-13 22:54:30,987 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-13 22:54:30,989 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-13 22:54:31,001 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-13 22:54:31,001 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-13 22:54:31,002 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-13 22:54:31,004 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-13 22:54:31,006 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-13 22:54:31,008 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-13 22:54:31,008 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-13 22:54:31,010 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-13 22:54:31,010 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-13 22:54:31,011 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-13 22:54:31,013 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-13 22:54:31,014 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-13 22:54:31,015 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-13 22:54:31,016 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-13 22:54:31,018 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-13 22:54:31,020 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-13 22:54:31,022 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-13 22:54:31,023 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-13 22:54:31,025 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-13 22:54:31,027 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-13 22:54:31,028 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-13 22:54:31,028 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-13 22:54:31,029 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-13 22:54:31,031 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-13 22:54:31,032 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-13 22:54:31,032 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-13 22:54:31,034 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-13 22:54:31,034 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-13 22:54:31,035 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-13 22:54:31,035 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-13 22:54:31,035 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-13 22:54:31,037 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-13 22:54:31,038 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-13 22:54:31,038 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-01-13 22:54:31,053 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-13 22:54:31,054 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-13 22:54:31,055 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-13 22:54:31,055 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-13 22:54:31,056 INFO L133 SettingsManager]: * Use SBE=true [2019-01-13 22:54:31,056 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-13 22:54:31,056 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-13 22:54:31,056 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-13 22:54:31,056 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-13 22:54:31,056 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-13 22:54:31,057 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-13 22:54:31,057 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-01-13 22:54:31,057 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2019-01-13 22:54:31,057 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-01-13 22:54:31,057 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-13 22:54:31,057 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-13 22:54:31,058 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-13 22:54:31,059 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-13 22:54:31,059 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-13 22:54:31,060 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-13 22:54:31,060 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-13 22:54:31,060 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-13 22:54:31,060 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-13 22:54:31,060 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-13 22:54:31,061 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-13 22:54:31,062 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-13 22:54:31,062 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 -> 504b8754db5656e557502f2f9e958956c9b0cd94 [2019-01-13 22:54:31,097 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-13 22:54:31,109 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-13 22:54:31,112 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-13 22:54:31,114 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-13 22:54:31,115 INFO L276 PluginConnector]: CDTParser initialized [2019-01-13 22:54:31,116 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/ldv-memsafety/memset2_false-valid-deref-write.c [2019-01-13 22:54:31,173 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42cf01e56/8f09d97b43cb46e48101076613030a98/FLAG08caa9c19 [2019-01-13 22:54:31,601 INFO L307 CDTParser]: Found 1 translation units. [2019-01-13 22:54:31,602 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/ldv-memsafety/memset2_false-valid-deref-write.c [2019-01-13 22:54:31,608 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42cf01e56/8f09d97b43cb46e48101076613030a98/FLAG08caa9c19 [2019-01-13 22:54:31,995 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42cf01e56/8f09d97b43cb46e48101076613030a98 [2019-01-13 22:54:31,999 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-13 22:54:32,001 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-01-13 22:54:32,002 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-13 22:54:32,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-13 22:54:32,007 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-13 22:54:32,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.01 10:54:31" (1/1) ... [2019-01-13 22:54:32,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7afe24ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 10:54:32, skipping insertion in model container [2019-01-13 22:54:32,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.01 10:54:31" (1/1) ... [2019-01-13 22:54:32,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-13 22:54:32,040 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-13 22:54:32,301 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-13 22:54:32,316 INFO L191 MainTranslator]: Completed pre-run [2019-01-13 22:54:32,336 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-13 22:54:32,357 INFO L195 MainTranslator]: Completed translation [2019-01-13 22:54:32,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 10:54:32 WrapperNode [2019-01-13 22:54:32,358 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-13 22:54:32,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-13 22:54:32,360 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-13 22:54:32,360 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-13 22:54:32,375 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 10:54:32" (1/1) ... [2019-01-13 22:54:32,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 10:54:32" (1/1) ... [2019-01-13 22:54:32,387 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 10:54:32" (1/1) ... [2019-01-13 22:54:32,388 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 10:54:32" (1/1) ... [2019-01-13 22:54:32,395 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 10:54:32" (1/1) ... [2019-01-13 22:54:32,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 10:54:32" (1/1) ... [2019-01-13 22:54:32,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 10:54:32" (1/1) ... [2019-01-13 22:54:32,409 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-13 22:54:32,410 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-13 22:54:32,410 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-13 22:54:32,410 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-13 22:54:32,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 10:54:32" (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 [2019-01-13 22:54:32,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-01-13 22:54:32,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-13 22:54:32,558 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-01-13 22:54:32,558 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-01-13 22:54:32,558 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-01-13 22:54:32,558 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-01-13 22:54:32,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-01-13 22:54:32,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-01-13 22:54:32,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-01-13 22:54:32,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-01-13 22:54:32,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-13 22:54:32,688 WARN L745 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-01-13 22:54:32,879 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-13 22:54:32,880 INFO L286 CfgBuilder]: Removed 0 assue(true) statements. [2019-01-13 22:54:32,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.01 10:54:32 BoogieIcfgContainer [2019-01-13 22:54:32,883 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-13 22:54:32,883 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-13 22:54:32,883 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-13 22:54:32,887 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-13 22:54:32,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.01 10:54:31" (1/3) ... [2019-01-13 22:54:32,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@147e3221 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.01 10:54:32, skipping insertion in model container [2019-01-13 22:54:32,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 10:54:32" (2/3) ... [2019-01-13 22:54:32,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@147e3221 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.01 10:54:32, skipping insertion in model container [2019-01-13 22:54:32,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.01 10:54:32" (3/3) ... [2019-01-13 22:54:32,893 INFO L112 eAbstractionObserver]: Analyzing ICFG memset2_false-valid-deref-write.c [2019-01-13 22:54:32,906 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-13 22:54:32,920 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-01-13 22:54:32,933 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-01-13 22:54:32,955 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-13 22:54:32,956 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-13 22:54:32,956 INFO L383 AbstractCegarLoop]: Hoare is false [2019-01-13 22:54:32,956 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-13 22:54:32,956 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-13 22:54:32,956 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-13 22:54:32,956 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-13 22:54:32,957 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-13 22:54:32,957 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-13 22:54:32,971 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-01-13 22:54:32,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-01-13 22:54:32,981 INFO L394 BasicCegarLoop]: Found error trace [2019-01-13 22:54:32,982 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-01-13 22:54:32,985 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2019-01-13 22:54:32,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-13 22:54:32,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1092847368, now seen corresponding path program 1 times [2019-01-13 22:54:32,994 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-13 22:54:32,995 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-13 22:54:33,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 22:54:33,044 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 22:54:33,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 22:54:33,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-13 22:54:33,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-13 22:54:33,168 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-13 22:54:33,169 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-13 22:54:33,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-13 22:54:33,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-13 22:54:33,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-13 22:54:33,187 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2019-01-13 22:54:33,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-13 22:54:33,247 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2019-01-13 22:54:33,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-13 22:54:33,249 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-01-13 22:54:33,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-13 22:54:33,257 INFO L225 Difference]: With dead ends: 19 [2019-01-13 22:54:33,257 INFO L226 Difference]: Without dead ends: 16 [2019-01-13 22:54:33,259 INFO L631 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 [2019-01-13 22:54:33,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-01-13 22:54:33,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-01-13 22:54:33,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-01-13 22:54:33,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-01-13 22:54:33,298 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2019-01-13 22:54:33,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-13 22:54:33,298 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-01-13 22:54:33,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-13 22:54:33,299 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-01-13 22:54:33,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-01-13 22:54:33,299 INFO L394 BasicCegarLoop]: Found error trace [2019-01-13 22:54:33,300 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-01-13 22:54:33,300 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2019-01-13 22:54:33,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-13 22:54:33,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1092847367, now seen corresponding path program 1 times [2019-01-13 22:54:33,301 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-13 22:54:33,301 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-13 22:54:33,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 22:54:33,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 22:54:33,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 22:54:33,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-13 22:54:33,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-13 22:54:33,372 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-13 22:54:33,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.01 10:54:33 BoogieIcfgContainer [2019-01-13 22:54:33,392 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-13 22:54:33,392 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-13 22:54:33,392 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-13 22:54:33,393 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-13 22:54:33,393 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.01 10:54:32" (3/4) ... [2019-01-13 22:54:33,395 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2019-01-13 22:54:33,436 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-13 22:54:33,436 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-13 22:54:33,437 INFO L168 Benchmark]: Toolchain (without parser) took 1437.64 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -121.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-01-13 22:54:33,440 INFO L168 Benchmark]: CDTParser took 0.22 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. [2019-01-13 22:54:33,441 INFO L168 Benchmark]: CACSL2BoogieTranslator took 355.61 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. [2019-01-13 22:54:33,442 INFO L168 Benchmark]: Boogie Preprocessor took 51.13 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. [2019-01-13 22:54:33,443 INFO L168 Benchmark]: RCFGBuilder took 472.90 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -154.4 MB). Peak memory consumption was 19.1 MB. Max. memory is 11.5 GB. [2019-01-13 22:54:33,444 INFO L168 Benchmark]: TraceAbstraction took 508.65 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. [2019-01-13 22:54:33,445 INFO L168 Benchmark]: Witness Printer took 44.19 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-13 22:54:33,450 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 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 355.61 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 51.13 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 472.90 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -154.4 MB). Peak memory consumption was 19.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 508.65 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. * Witness Printer took 44.19 ms. Allocated memory is still 1.1 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: 22]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L21] struct compstat cstats ; VAL [cstats={1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 3 error locations. UNSAFE Result, 0.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 17 SDtfs, 1 SDslu, 10 SDs, 0 SdLazy, 8 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=20occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s 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, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...