./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memsetNonZero3_-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_276c7168-16d9-4bb5-9f63-cd2974c8c111/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_276c7168-16d9-4bb5-9f63-cd2974c8c111/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_276c7168-16d9-4bb5-9f63-cd2974c8c111/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_276c7168-16d9-4bb5-9f63-cd2974c8c111/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memsetNonZero3_-write.c -s /tmp/vcloud-vcloud-master/worker/run_dir_276c7168-16d9-4bb5-9f63-cd2974c8c111/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_276c7168-16d9-4bb5-9f63-cd2974c8c111/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 2400e27d5b2639ed1593fd2baea66159e12a4386 ........................................................................................................................................................................................................................................................................... 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 [2020-11-30 00:57:03,112 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:57:03,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:57:03,179 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:57:03,180 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:57:03,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:57:03,184 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:57:03,187 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:57:03,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:57:03,191 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:57:03,192 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:57:03,194 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:57:03,198 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:57:03,200 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:57:03,202 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:57:03,203 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:57:03,205 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:57:03,206 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:57:03,209 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:57:03,218 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:57:03,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:57:03,228 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:57:03,231 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:57:03,236 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:57:03,244 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:57:03,244 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:57:03,245 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:57:03,253 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:57:03,254 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:57:03,256 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:57:03,256 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:57:03,258 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:57:03,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:57:03,262 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:57:03,263 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:57:03,263 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:57:03,264 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:57:03,265 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:57:03,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:57:03,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:57:03,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:57:03,270 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_276c7168-16d9-4bb5-9f63-cd2974c8c111/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-30 00:57:03,317 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:57:03,317 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:57:03,323 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:57:03,324 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:57:03,324 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:57:03,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:57:03,331 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:57:03,331 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 00:57:03,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:57:03,332 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:57:03,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:57:03,332 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-30 00:57:03,333 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-30 00:57:03,333 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-30 00:57:03,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:57:03,334 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 00:57:03,334 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:57:03,334 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:57:03,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:57:03,335 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:57:03,335 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:57:03,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:57:03,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:57:03,336 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:57:03,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:57:03,337 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:57:03,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:57:03,337 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:57:03,337 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_276c7168-16d9-4bb5-9f63-cd2974c8c111/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_276c7168-16d9-4bb5-9f63-cd2974c8c111/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2400e27d5b2639ed1593fd2baea66159e12a4386 [2020-11-30 00:57:03,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:57:03,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:57:03,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:57:03,630 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:57:03,633 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:57:03,635 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_276c7168-16d9-4bb5-9f63-cd2974c8c111/bin/uautomizer/../../sv-benchmarks/c/ldv-memsafety/memsetNonZero3_-write.c [2020-11-30 00:57:03,725 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_276c7168-16d9-4bb5-9f63-cd2974c8c111/bin/uautomizer/data/b3c2d6072/4fd489d607d446c5b0e55d59eee85a93/FLAG1dbcfc2c1 [2020-11-30 00:57:04,195 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:57:04,195 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_276c7168-16d9-4bb5-9f63-cd2974c8c111/sv-benchmarks/c/ldv-memsafety/memsetNonZero3_-write.c [2020-11-30 00:57:04,200 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_276c7168-16d9-4bb5-9f63-cd2974c8c111/bin/uautomizer/data/b3c2d6072/4fd489d607d446c5b0e55d59eee85a93/FLAG1dbcfc2c1 [2020-11-30 00:57:04,576 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_276c7168-16d9-4bb5-9f63-cd2974c8c111/bin/uautomizer/data/b3c2d6072/4fd489d607d446c5b0e55d59eee85a93 [2020-11-30 00:57:04,578 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:57:04,579 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-30 00:57:04,580 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:57:04,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:57:04,593 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:57:04,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:57:04" (1/1) ... [2020-11-30 00:57:04,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d543e79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:57:04, skipping insertion in model container [2020-11-30 00:57:04,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:57:04" (1/1) ... [2020-11-30 00:57:04,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:57:04,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:57:04,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:57:04,780 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:57:04,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:57:04,811 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:57:04,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:57:04 WrapperNode [2020-11-30 00:57:04,812 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:57:04,813 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:57:04,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:57:04,814 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:57:04,826 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:57:04" (1/1) ... [2020-11-30 00:57:04,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:57:04" (1/1) ... [2020-11-30 00:57:04,832 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:57:04" (1/1) ... [2020-11-30 00:57:04,833 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:57:04" (1/1) ... [2020-11-30 00:57:04,837 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:57:04" (1/1) ... [2020-11-30 00:57:04,841 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:57:04" (1/1) ... [2020-11-30 00:57:04,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:57:04" (1/1) ... [2020-11-30 00:57:04,843 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:57:04,844 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:57:04,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:57:04,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:57:04,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:57:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_276c7168-16d9-4bb5-9f63-cd2974c8c111/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 [2020-11-30 00:57:04,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-30 00:57:04,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:57:04,913 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-30 00:57:04,914 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-11-30 00:57:04,914 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-11-30 00:57:04,914 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-30 00:57:04,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:57:04,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-11-30 00:57:04,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:57:04,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-30 00:57:04,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:57:05,055 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-30 00:57:05,322 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:57:05,325 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-30 00:57:05,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:57:05 BoogieIcfgContainer [2020-11-30 00:57:05,328 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:57:05,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:57:05,334 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:57:05,338 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:57:05,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:57:04" (1/3) ... [2020-11-30 00:57:05,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a59dfab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:57:05, skipping insertion in model container [2020-11-30 00:57:05,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:57:04" (2/3) ... [2020-11-30 00:57:05,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a59dfab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:57:05, skipping insertion in model container [2020-11-30 00:57:05,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:57:05" (3/3) ... [2020-11-30 00:57:05,343 INFO L111 eAbstractionObserver]: Analyzing ICFG memsetNonZero3_-write.c [2020-11-30 00:57:05,357 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:57:05,362 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-30 00:57:05,383 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-30 00:57:05,402 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:57:05,402 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-30 00:57:05,402 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:57:05,402 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:57:05,402 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:57:05,403 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:57:05,403 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:57:05,403 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:57:05,417 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-11-30 00:57:05,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 00:57:05,425 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:57:05,425 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:57:05,426 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-30 00:57:05,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:57:05,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1092847368, now seen corresponding path program 1 times [2020-11-30 00:57:05,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:57:05,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941702567] [2020-11-30 00:57:05,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:57:05,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:57:05,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-30 00:57:05,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:57:05,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:57:05,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941702567] [2020-11-30 00:57:05,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:57:05,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:57:05,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426468540] [2020-11-30 00:57:05,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:57:05,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:57:05,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:57:05,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:57:05,661 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 4 states. [2020-11-30 00:57:05,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:57:05,747 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-11-30 00:57:05,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:57:05,750 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-30 00:57:05,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:57:05,757 INFO L225 Difference]: With dead ends: 19 [2020-11-30 00:57:05,757 INFO L226 Difference]: Without dead ends: 16 [2020-11-30 00:57:05,759 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 [2020-11-30 00:57:05,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-30 00:57:05,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-30 00:57:05,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-30 00:57:05,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-11-30 00:57:05,807 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2020-11-30 00:57:05,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:57:05,808 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-11-30 00:57:05,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:57:05,808 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-11-30 00:57:05,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 00:57:05,809 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:57:05,809 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:57:05,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:57:05,809 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-11-30 00:57:05,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:57:05,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1092847367, now seen corresponding path program 1 times [2020-11-30 00:57:05,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:57:05,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969775185] [2020-11-30 00:57:05,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:57:05,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:57:05,835 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:57:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:57:05,849 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:57:05,867 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:57:05,867 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:57:05,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:57:05,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:57:05 BoogieIcfgContainer [2020-11-30 00:57:05,887 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:57:05,887 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:57:05,887 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:57:05,888 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:57:05,888 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:57:05" (3/4) ... [2020-11-30 00:57:05,890 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 00:57:05,923 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_276c7168-16d9-4bb5-9f63-cd2974c8c111/bin/uautomizer/witness.graphml [2020-11-30 00:57:05,923 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:57:05,925 INFO L168 Benchmark]: Toolchain (without parser) took 1344.91 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 62.2 MB in the beginning and 89.0 MB in the end (delta: -26.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:57:05,926 INFO L168 Benchmark]: CDTParser took 0.51 ms. Allocated memory is still 90.2 MB. Free memory was 49.9 MB in the beginning and 49.9 MB in the end (delta: 44.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:57:05,927 INFO L168 Benchmark]: CACSL2BoogieTranslator took 232.02 ms. Allocated memory is still 90.2 MB. Free memory was 62.2 MB in the beginning and 68.7 MB in the end (delta: -6.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:57:05,927 INFO L168 Benchmark]: Boogie Preprocessor took 30.32 ms. Allocated memory is still 90.2 MB. Free memory was 68.7 MB in the beginning and 67.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:57:05,928 INFO L168 Benchmark]: RCFGBuilder took 485.32 ms. Allocated memory is still 90.2 MB. Free memory was 67.4 MB in the beginning and 56.2 MB in the end (delta: 11.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:57:05,929 INFO L168 Benchmark]: TraceAbstraction took 553.44 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 55.8 MB in the beginning and 91.0 MB in the end (delta: -35.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:57:05,930 INFO L168 Benchmark]: Witness Printer took 35.61 ms. Allocated memory is still 115.3 MB. Free memory was 90.7 MB in the beginning and 89.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:57:05,933 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 ms. Allocated memory is still 90.2 MB. Free memory was 49.9 MB in the beginning and 49.9 MB in the end (delta: 44.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 232.02 ms. Allocated memory is still 90.2 MB. Free memory was 62.2 MB in the beginning and 68.7 MB in the end (delta: -6.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.32 ms. Allocated memory is still 90.2 MB. Free memory was 68.7 MB in the beginning and 67.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 485.32 ms. Allocated memory is still 90.2 MB. Free memory was 67.4 MB in the beginning and 56.2 MB in the end (delta: 11.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 553.44 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 55.8 MB in the beginning and 91.0 MB in the end (delta: -35.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 35.61 ms. Allocated memory is still 115.3 MB. Free memory was 90.7 MB in the beginning and 89.0 MB in the end (delta: 1.8 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: 0.4s, 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...