./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memset3_-write.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3d4d3f1b-4acc-4a77-b43c-df8208617a18/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3d4d3f1b-4acc-4a77-b43c-df8208617a18/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3d4d3f1b-4acc-4a77-b43c-df8208617a18/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3d4d3f1b-4acc-4a77-b43c-df8208617a18/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memset3_-write.c -s /tmp/vcloud-vcloud-master/worker/run_dir_3d4d3f1b-4acc-4a77-b43c-df8208617a18/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3d4d3f1b-4acc-4a77-b43c-df8208617a18/bin/uautomizer --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 97106d24c91338d3a7f71605e6dcf95bdff73f56 ........................................................................................................................................................................................................................................................................... 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 0.2.0-a4ecdab [2020-11-28 02:58:43,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:58:43,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:58:43,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:58:43,121 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:58:43,126 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:58:43,129 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:58:43,133 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:58:43,136 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:58:43,142 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:58:43,143 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:58:43,146 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:58:43,146 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:58:43,150 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:58:43,151 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:58:43,154 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:58:43,155 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:58:43,159 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:58:43,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:58:43,171 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:58:43,173 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:58:43,174 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:58:43,176 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:58:43,178 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:58:43,187 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:58:43,187 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:58:43,188 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:58:43,190 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:58:43,190 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:58:43,192 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:58:43,192 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:58:43,193 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:58:43,195 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:58:43,197 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:58:43,198 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:58:43,198 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:58:43,199 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:58:43,199 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:58:43,199 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:58:43,202 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:58:43,203 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:58:43,203 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3d4d3f1b-4acc-4a77-b43c-df8208617a18/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-28 02:58:43,242 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:58:43,242 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:58:43,244 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:58:43,245 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:58:43,245 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:58:43,245 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:58:43,245 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:58:43,246 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 02:58:43,246 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:58:43,246 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:58:43,247 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:58:43,247 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 02:58:43,248 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 02:58:43,248 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 02:58:43,248 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:58:43,248 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 02:58:43,248 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:58:43,249 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:58:43,249 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:58:43,249 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:58:43,249 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:58:43,249 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:58:43,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:58:43,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:58:43,250 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:58:43,250 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:58:43,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:58:43,251 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:58:43,251 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_3d4d3f1b-4acc-4a77-b43c-df8208617a18/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3d4d3f1b-4acc-4a77-b43c-df8208617a18/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97106d24c91338d3a7f71605e6dcf95bdff73f56 [2020-11-28 02:58:43,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:58:43,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:58:43,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:58:43,591 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:58:43,592 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:58:43,593 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3d4d3f1b-4acc-4a77-b43c-df8208617a18/bin/uautomizer/../../sv-benchmarks/c/ldv-memsafety/memset3_-write.c [2020-11-28 02:58:43,673 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3d4d3f1b-4acc-4a77-b43c-df8208617a18/bin/uautomizer/data/ef9bb65d6/4d36f0aab96342cbb9602832d951b15d/FLAGfeb3ebc98 [2020-11-28 02:58:44,162 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:58:44,163 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3d4d3f1b-4acc-4a77-b43c-df8208617a18/sv-benchmarks/c/ldv-memsafety/memset3_-write.c [2020-11-28 02:58:44,168 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3d4d3f1b-4acc-4a77-b43c-df8208617a18/bin/uautomizer/data/ef9bb65d6/4d36f0aab96342cbb9602832d951b15d/FLAGfeb3ebc98 [2020-11-28 02:58:44,547 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3d4d3f1b-4acc-4a77-b43c-df8208617a18/bin/uautomizer/data/ef9bb65d6/4d36f0aab96342cbb9602832d951b15d [2020-11-28 02:58:44,550 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:58:44,551 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-28 02:58:44,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:58:44,553 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:58:44,557 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:58:44,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:44" (1/1) ... [2020-11-28 02:58:44,559 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f38f8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:44, skipping insertion in model container [2020-11-28 02:58:44,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:44" (1/1) ... [2020-11-28 02:58:44,567 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:58:44,583 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:58:44,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:58:44,749 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:58:44,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:58:44,782 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:58:44,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:44 WrapperNode [2020-11-28 02:58:44,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:58:44,784 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:58:44,785 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:58:44,785 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:58:44,795 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:44" (1/1) ... [2020-11-28 02:58:44,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:44" (1/1) ... [2020-11-28 02:58:44,801 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:44" (1/1) ... [2020-11-28 02:58:44,801 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:44" (1/1) ... [2020-11-28 02:58:44,808 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:44" (1/1) ... [2020-11-28 02:58:44,813 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:44" (1/1) ... [2020-11-28 02:58:44,814 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:44" (1/1) ... [2020-11-28 02:58:44,815 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:58:44,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:58:44,816 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:58:44,816 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:58:44,817 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3d4d3f1b-4acc-4a77-b43c-df8208617a18/bin/uautomizer/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 [2020-11-28 02:58:44,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-28 02:58:44,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:58:44,890 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-28 02:58:44,890 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-11-28 02:58:44,890 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-11-28 02:58:44,891 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-28 02:58:44,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:58:44,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-11-28 02:58:44,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 02:58:44,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-28 02:58:44,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:58:44,998 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-28 02:58:45,135 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:58:45,135 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-28 02:58:45,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:45 BoogieIcfgContainer [2020-11-28 02:58:45,137 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:58:45,139 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:58:45,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:58:45,144 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:58:45,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:58:44" (1/3) ... [2020-11-28 02:58:45,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e97bd3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:58:45, skipping insertion in model container [2020-11-28 02:58:45,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:44" (2/3) ... [2020-11-28 02:58:45,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e97bd3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:58:45, skipping insertion in model container [2020-11-28 02:58:45,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:45" (3/3) ... [2020-11-28 02:58:45,155 INFO L111 eAbstractionObserver]: Analyzing ICFG memset3_-write.c [2020-11-28 02:58:45,168 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:58:45,173 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-28 02:58:45,201 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-28 02:58:45,230 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:58:45,230 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-28 02:58:45,230 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:58:45,231 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:58:45,231 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:58:45,237 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:58:45,237 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:58:45,238 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:58:45,260 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-11-28 02:58:45,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 02:58:45,269 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:45,270 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:45,270 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 02:58:45,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:45,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1092847368, now seen corresponding path program 1 times [2020-11-28 02:58:45,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:45,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058687997] [2020-11-28 02:58:45,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:45,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:45,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 02:58:45,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:45,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:45,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058687997] [2020-11-28 02:58:45,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:45,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:58:45,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801066757] [2020-11-28 02:58:45,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:58:45,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:45,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:58:45,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:58:45,652 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 4 states. [2020-11-28 02:58:45,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:45,758 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-11-28 02:58:45,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:58:45,760 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-28 02:58:45,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:45,768 INFO L225 Difference]: With dead ends: 19 [2020-11-28 02:58:45,769 INFO L226 Difference]: Without dead ends: 16 [2020-11-28 02:58:45,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:58:45,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-28 02:58:45,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-28 02:58:45,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-28 02:58:45,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-11-28 02:58:45,819 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2020-11-28 02:58:45,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:45,820 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-11-28 02:58:45,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:58:45,821 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-11-28 02:58:45,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 02:58:45,822 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:45,822 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:45,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:58:45,823 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-28 02:58:45,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:45,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1092847367, now seen corresponding path program 1 times [2020-11-28 02:58:45,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:45,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027269045] [2020-11-28 02:58:45,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:45,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:45,868 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:45,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:45,886 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:45,912 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:58:45,912 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 02:58:45,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 02:58:45,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:58:45 BoogieIcfgContainer [2020-11-28 02:58:45,936 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:58:45,936 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:58:45,937 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:58:45,937 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:58:45,937 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:45" (3/4) ... [2020-11-28 02:58:45,939 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 02:58:45,983 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3d4d3f1b-4acc-4a77-b43c-df8208617a18/bin/uautomizer/witness.graphml [2020-11-28 02:58:45,983 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:58:45,985 INFO L168 Benchmark]: Toolchain (without parser) took 1432.55 ms. Allocated memory was 83.9 MB in the beginning and 111.1 MB in the end (delta: 27.3 MB). Free memory was 55.6 MB in the beginning and 79.6 MB in the end (delta: -23.9 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:45,986 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 83.9 MB. Free memory is still 49.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:45,990 INFO L168 Benchmark]: CACSL2BoogieTranslator took 230.79 ms. Allocated memory was 83.9 MB in the beginning and 111.1 MB in the end (delta: 27.3 MB). Free memory was 55.5 MB in the beginning and 88.3 MB in the end (delta: -32.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:45,995 INFO L168 Benchmark]: Boogie Preprocessor took 30.97 ms. Allocated memory is still 111.1 MB. Free memory was 88.3 MB in the beginning and 86.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:45,996 INFO L168 Benchmark]: RCFGBuilder took 321.23 ms. Allocated memory is still 111.1 MB. Free memory was 86.9 MB in the beginning and 76.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:45,996 INFO L168 Benchmark]: TraceAbstraction took 796.47 ms. Allocated memory is still 111.1 MB. Free memory was 75.7 MB in the beginning and 81.1 MB in the end (delta: -5.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:45,997 INFO L168 Benchmark]: Witness Printer took 46.64 ms. Allocated memory is still 111.1 MB. Free memory was 81.1 MB in the beginning and 79.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:46,006 INFO L339 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 83.9 MB. Free memory is still 49.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 230.79 ms. Allocated memory was 83.9 MB in the beginning and 111.1 MB in the end (delta: 27.3 MB). Free memory was 55.5 MB in the beginning and 88.3 MB in the end (delta: -32.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.97 ms. Allocated memory is still 111.1 MB. Free memory was 88.3 MB in the beginning and 86.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 321.23 ms. Allocated memory is still 111.1 MB. Free memory was 86.9 MB in the beginning and 76.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 796.47 ms. Allocated memory is still 111.1 MB. Free memory was 75.7 MB in the beginning and 81.1 MB in the end (delta: -5.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 46.64 ms. Allocated memory is still 111.1 MB. Free memory was 81.1 MB in the beginning and 79.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 29]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L26] struct ppp_comp_stats cstats ; [L27] void *point; [L28] point = (void *)(& cstats) VAL [cstats={2:0}, point={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 6 SDslu, 8 SDs, 0 SdLazy, 24 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 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 DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 114 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...