./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_b2994a64-7c49-4935-9c40-2518ac5f4e4a/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b2994a64-7c49-4935-9c40-2518ac5f4e4a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b2994a64-7c49-4935-9c40-2518ac5f4e4a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b2994a64-7c49-4935-9c40-2518ac5f4e4a/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memset3_-write.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b2994a64-7c49-4935-9c40-2518ac5f4e4a/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b2994a64-7c49-4935-9c40-2518ac5f4e4a/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 [2020-11-29 19:36:49,613 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:36:49,616 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:36:49,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:36:49,712 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:36:49,719 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:36:49,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:36:49,730 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:36:49,733 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:36:49,740 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:36:49,742 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:36:49,743 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:36:49,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:36:49,745 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:36:49,746 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:36:49,747 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:36:49,748 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:36:49,749 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:36:49,751 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:36:49,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:36:49,763 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:36:49,764 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:36:49,769 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:36:49,771 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:36:49,778 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:36:49,778 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:36:49,779 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:36:49,781 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:36:49,781 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:36:49,783 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:36:49,783 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:36:49,785 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:36:49,787 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:36:49,788 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:36:49,789 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:36:49,789 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:36:49,790 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:36:49,791 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:36:49,791 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:36:49,792 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:36:49,793 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:36:49,795 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b2994a64-7c49-4935-9c40-2518ac5f4e4a/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-29 19:36:49,836 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:36:49,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:36:49,843 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:36:49,843 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:36:49,843 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:36:49,844 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:36:49,844 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:36:49,844 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 19:36:49,844 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:36:49,844 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:36:49,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:36:49,846 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-29 19:36:49,846 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-29 19:36:49,846 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-29 19:36:49,846 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:36:49,846 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-29 19:36:49,847 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:36:49,847 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:36:49,847 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:36:49,847 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:36:49,848 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:36:49,848 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:36:49,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:36:49,848 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:36:49,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:36:49,849 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:36:49,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:36:49,849 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:36:49,849 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_b2994a64-7c49-4935-9c40-2518ac5f4e4a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b2994a64-7c49-4935-9c40-2518ac5f4e4a/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97106d24c91338d3a7f71605e6dcf95bdff73f56 [2020-11-29 19:36:50,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:36:50,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:36:50,120 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:36:50,121 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:36:50,122 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:36:50,123 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b2994a64-7c49-4935-9c40-2518ac5f4e4a/bin/uautomizer/../../sv-benchmarks/c/ldv-memsafety/memset3_-write.c [2020-11-29 19:36:50,221 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b2994a64-7c49-4935-9c40-2518ac5f4e4a/bin/uautomizer/data/fe2d2ff6b/d891a07b6dbf4bd590832a31221a963a/FLAGb33908403 [2020-11-29 19:36:50,724 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:36:50,724 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b2994a64-7c49-4935-9c40-2518ac5f4e4a/sv-benchmarks/c/ldv-memsafety/memset3_-write.c [2020-11-29 19:36:50,730 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b2994a64-7c49-4935-9c40-2518ac5f4e4a/bin/uautomizer/data/fe2d2ff6b/d891a07b6dbf4bd590832a31221a963a/FLAGb33908403 [2020-11-29 19:36:51,091 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b2994a64-7c49-4935-9c40-2518ac5f4e4a/bin/uautomizer/data/fe2d2ff6b/d891a07b6dbf4bd590832a31221a963a [2020-11-29 19:36:51,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:36:51,095 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-29 19:36:51,097 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:36:51,097 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:36:51,101 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:36:51,102 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:36:51" (1/1) ... [2020-11-29 19:36:51,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@599d8dc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:36:51, skipping insertion in model container [2020-11-29 19:36:51,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:36:51" (1/1) ... [2020-11-29 19:36:51,112 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:36:51,125 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:36:51,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:36:51,328 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:36:51,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:36:51,368 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:36:51,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:36:51 WrapperNode [2020-11-29 19:36:51,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:36:51,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:36:51,370 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:36:51,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:36:51,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:36:51" (1/1) ... [2020-11-29 19:36:51,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:36:51" (1/1) ... [2020-11-29 19:36:51,392 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:36:51" (1/1) ... [2020-11-29 19:36:51,392 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:36:51" (1/1) ... [2020-11-29 19:36:51,396 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:36:51" (1/1) ... [2020-11-29 19:36:51,400 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:36:51" (1/1) ... [2020-11-29 19:36:51,401 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:36:51" (1/1) ... [2020-11-29 19:36:51,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:36:51,404 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:36:51,404 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:36:51,404 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:36:51,405 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:36:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b2994a64-7c49-4935-9c40-2518ac5f4e4a/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 [2020-11-29 19:36:51,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-29 19:36:51,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:36:51,478 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-29 19:36:51,478 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-11-29 19:36:51,479 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-11-29 19:36:51,479 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-29 19:36:51,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:36:51,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-11-29 19:36:51,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 19:36:51,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-29 19:36:51,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:36:51,627 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-29 19:36:51,805 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:36:51,805 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-29 19:36:51,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:36:51 BoogieIcfgContainer [2020-11-29 19:36:51,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:36:51,810 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:36:51,814 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:36:51,818 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:36:51,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:36:51" (1/3) ... [2020-11-29 19:36:51,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38bc01a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:36:51, skipping insertion in model container [2020-11-29 19:36:51,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:36:51" (2/3) ... [2020-11-29 19:36:51,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38bc01a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:36:51, skipping insertion in model container [2020-11-29 19:36:51,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:36:51" (3/3) ... [2020-11-29 19:36:51,823 INFO L111 eAbstractionObserver]: Analyzing ICFG memset3_-write.c [2020-11-29 19:36:51,837 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:36:51,844 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-29 19:36:51,857 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-29 19:36:51,880 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:36:51,880 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-29 19:36:51,880 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:36:51,880 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:36:51,880 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:36:51,880 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:36:51,880 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:36:51,880 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:36:51,892 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-11-29 19:36:51,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 19:36:51,900 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:36:51,901 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:36:51,901 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-29 19:36:51,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:36:51,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1092847368, now seen corresponding path program 1 times [2020-11-29 19:36:51,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:36:51,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823747330] [2020-11-29 19:36:51,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:36:52,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:36:52,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 19:36:52,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:36:52,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:36:52,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823747330] [2020-11-29 19:36:52,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:36:52,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:36:52,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404603464] [2020-11-29 19:36:52,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:36:52,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:36:52,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:36:52,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:36:52,174 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 4 states. [2020-11-29 19:36:52,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:36:52,295 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-11-29 19:36:52,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:36:52,298 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-29 19:36:52,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:36:52,307 INFO L225 Difference]: With dead ends: 19 [2020-11-29 19:36:52,317 INFO L226 Difference]: Without dead ends: 16 [2020-11-29 19:36:52,319 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 [2020-11-29 19:36:52,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-29 19:36:52,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-29 19:36:52,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-29 19:36:52,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-11-29 19:36:52,367 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2020-11-29 19:36:52,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:36:52,368 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-11-29 19:36:52,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:36:52,368 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-11-29 19:36:52,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 19:36:52,369 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:36:52,369 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:36:52,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 19:36:52,370 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-29 19:36:52,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:36:52,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1092847367, now seen corresponding path program 1 times [2020-11-29 19:36:52,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:36:52,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753299493] [2020-11-29 19:36:52,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:36:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:36:52,413 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:36:52,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:36:52,444 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:36:52,463 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:36:52,464 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 19:36:52,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 19:36:52,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:36:52 BoogieIcfgContainer [2020-11-29 19:36:52,485 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:36:52,486 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:36:52,486 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:36:52,486 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:36:52,486 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:36:51" (3/4) ... [2020-11-29 19:36:52,489 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 19:36:52,521 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b2994a64-7c49-4935-9c40-2518ac5f4e4a/bin/uautomizer/witness.graphml [2020-11-29 19:36:52,521 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:36:52,523 INFO L168 Benchmark]: Toolchain (without parser) took 1426.89 ms. Allocated memory is still 100.7 MB. Free memory was 70.3 MB in the beginning and 38.5 MB in the end (delta: 31.8 MB). Peak memory consumption was 30.8 MB. Max. memory is 16.1 GB. [2020-11-29 19:36:52,524 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 83.9 MB. Free memory was 41.6 MB in the beginning and 41.6 MB in the end (delta: 34.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:36:52,524 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.70 ms. Allocated memory is still 100.7 MB. Free memory was 70.3 MB in the beginning and 78.7 MB in the end (delta: -8.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 19:36:52,525 INFO L168 Benchmark]: Boogie Preprocessor took 32.85 ms. Allocated memory is still 100.7 MB. Free memory was 78.7 MB in the beginning and 77.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:36:52,526 INFO L168 Benchmark]: RCFGBuilder took 403.01 ms. Allocated memory is still 100.7 MB. Free memory was 77.5 MB in the beginning and 66.2 MB in the end (delta: 11.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 19:36:52,526 INFO L168 Benchmark]: TraceAbstraction took 675.12 ms. Allocated memory is still 100.7 MB. Free memory was 65.8 MB in the beginning and 40.1 MB in the end (delta: 25.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-11-29 19:36:52,527 INFO L168 Benchmark]: Witness Printer took 35.49 ms. Allocated memory is still 100.7 MB. Free memory was 39.6 MB in the beginning and 38.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:36:52,530 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 83.9 MB. Free memory was 41.6 MB in the beginning and 41.6 MB in the end (delta: 34.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 272.70 ms. Allocated memory is still 100.7 MB. Free memory was 70.3 MB in the beginning and 78.7 MB in the end (delta: -8.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.85 ms. Allocated memory is still 100.7 MB. Free memory was 78.7 MB in the beginning and 77.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 403.01 ms. Allocated memory is still 100.7 MB. Free memory was 77.5 MB in the beginning and 66.2 MB in the end (delta: 11.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 675.12 ms. Allocated memory is still 100.7 MB. Free memory was 65.8 MB in the beginning and 40.1 MB in the end (delta: 25.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * Witness Printer took 35.49 ms. Allocated memory is still 100.7 MB. Free memory was 39.6 MB in the beginning and 38.5 MB in the end (delta: 1.1 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: 0.5s, 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...