./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/scopes4-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e0d190f2-79d2-4c46-80bf-200f876b3786/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_e0d190f2-79d2-4c46-80bf-200f876b3786/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e0d190f2-79d2-4c46-80bf-200f876b3786/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e0d190f2-79d2-4c46-80bf-200f876b3786/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/scopes4-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e0d190f2-79d2-4c46-80bf-200f876b3786/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e0d190f2-79d2-4c46-80bf-200f876b3786/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 25981771a012eec333f97d8302486eae22970d9e ....................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 13:53:05,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 13:53:05,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 13:53:05,136 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 13:53:05,136 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 13:53:05,137 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 13:53:05,138 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 13:53:05,140 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 13:53:05,142 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 13:53:05,142 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 13:53:05,143 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 13:53:05,144 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 13:53:05,145 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 13:53:05,146 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 13:53:05,146 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 13:53:05,147 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 13:53:05,148 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 13:53:05,149 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 13:53:05,151 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 13:53:05,152 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 13:53:05,154 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 13:53:05,155 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 13:53:05,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 13:53:05,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 13:53:05,158 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 13:53:05,158 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 13:53:05,158 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 13:53:05,159 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 13:53:05,159 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 13:53:05,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 13:53:05,160 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 13:53:05,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 13:53:05,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 13:53:05,162 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 13:53:05,163 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 13:53:05,163 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 13:53:05,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 13:53:05,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 13:53:05,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 13:53:05,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 13:53:05,165 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 13:53:05,166 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e0d190f2-79d2-4c46-80bf-200f876b3786/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-12-07 13:53:05,177 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 13:53:05,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 13:53:05,178 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 13:53:05,178 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 13:53:05,179 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 13:53:05,179 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 13:53:05,179 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 13:53:05,179 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 13:53:05,179 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 13:53:05,179 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 13:53:05,180 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 13:53:05,180 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-12-07 13:53:05,180 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-12-07 13:53:05,180 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-12-07 13:53:05,180 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 13:53:05,180 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 13:53:05,181 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 13:53:05,181 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 13:53:05,181 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 13:53:05,181 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 13:53:05,181 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 13:53:05,181 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 13:53:05,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 13:53:05,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 13:53:05,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 13:53:05,182 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 13:53:05,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 13:53:05,183 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 13:53:05,183 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_e0d190f2-79d2-4c46-80bf-200f876b3786/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 -> 25981771a012eec333f97d8302486eae22970d9e [2019-12-07 13:53:05,301 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 13:53:05,309 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 13:53:05,311 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 13:53:05,312 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 13:53:05,312 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 13:53:05,313 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e0d190f2-79d2-4c46-80bf-200f876b3786/bin/uautomizer/../../sv-benchmarks/c/memsafety-ext3/scopes4-2.c [2019-12-07 13:53:05,351 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e0d190f2-79d2-4c46-80bf-200f876b3786/bin/uautomizer/data/4300e7239/39f8db32f07247b6807c389d8da855fa/FLAG4d1dc5098 [2019-12-07 13:53:05,830 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 13:53:05,830 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e0d190f2-79d2-4c46-80bf-200f876b3786/sv-benchmarks/c/memsafety-ext3/scopes4-2.c [2019-12-07 13:53:05,834 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e0d190f2-79d2-4c46-80bf-200f876b3786/bin/uautomizer/data/4300e7239/39f8db32f07247b6807c389d8da855fa/FLAG4d1dc5098 [2019-12-07 13:53:06,334 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e0d190f2-79d2-4c46-80bf-200f876b3786/bin/uautomizer/data/4300e7239/39f8db32f07247b6807c389d8da855fa [2019-12-07 13:53:06,337 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 13:53:06,338 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-07 13:53:06,338 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 13:53:06,338 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 13:53:06,341 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 13:53:06,342 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:53:06" (1/1) ... [2019-12-07 13:53:06,344 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c2cbba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:53:06, skipping insertion in model container [2019-12-07 13:53:06,344 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:53:06" (1/1) ... [2019-12-07 13:53:06,349 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 13:53:06,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 13:53:06,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:53:06,504 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 13:53:06,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:53:06,524 INFO L208 MainTranslator]: Completed translation [2019-12-07 13:53:06,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:53:06 WrapperNode [2019-12-07 13:53:06,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 13:53:06,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 13:53:06,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 13:53:06,525 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 13:53:06,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:53:06" (1/1) ... [2019-12-07 13:53:06,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:53:06" (1/1) ... [2019-12-07 13:53:06,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:53:06" (1/1) ... [2019-12-07 13:53:06,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:53:06" (1/1) ... [2019-12-07 13:53:06,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:53:06" (1/1) ... [2019-12-07 13:53:06,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:53:06" (1/1) ... [2019-12-07 13:53:06,544 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:53:06" (1/1) ... [2019-12-07 13:53:06,545 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 13:53:06,545 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 13:53:06,545 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 13:53:06,545 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 13:53:06,546 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:53:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e0d190f2-79d2-4c46-80bf-200f876b3786/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 [2019-12-07 13:53:06,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-12-07 13:53:06,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 13:53:06,584 INFO L138 BoogieDeclarations]: Found implementation of procedure foo2 [2019-12-07 13:53:06,584 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2019-12-07 13:53:06,584 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-12-07 13:53:06,584 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-12-07 13:53:06,584 INFO L130 BoogieDeclarations]: Found specification of procedure foo2 [2019-12-07 13:53:06,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 13:53:06,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 13:53:06,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 13:53:06,584 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2019-12-07 13:53:06,585 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-12-07 13:53:06,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 13:53:06,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-12-07 13:53:06,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-12-07 13:53:06,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 13:53:06,703 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 13:53:06,703 INFO L287 CfgBuilder]: Removed 0 assume(true) statements. [2019-12-07 13:53:06,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:53:06 BoogieIcfgContainer [2019-12-07 13:53:06,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 13:53:06,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 13:53:06,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 13:53:06,707 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 13:53:06,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:53:06" (1/3) ... [2019-12-07 13:53:06,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f005c89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:53:06, skipping insertion in model container [2019-12-07 13:53:06,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:53:06" (2/3) ... [2019-12-07 13:53:06,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f005c89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:53:06, skipping insertion in model container [2019-12-07 13:53:06,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:53:06" (3/3) ... [2019-12-07 13:53:06,709 INFO L109 eAbstractionObserver]: Analyzing ICFG scopes4-2.c [2019-12-07 13:53:06,715 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 13:53:06,720 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-12-07 13:53:06,727 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-12-07 13:53:06,739 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 13:53:06,739 INFO L374 AbstractCegarLoop]: Hoare is false [2019-12-07 13:53:06,740 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 13:53:06,740 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 13:53:06,740 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 13:53:06,740 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 13:53:06,740 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 13:53:06,740 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 13:53:06,749 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-12-07 13:53:06,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 13:53:06,755 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:53:06,755 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:53:06,756 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, foo2Err0REQUIRES_VIOLATION, foo2Err1REQUIRES_VIOLATION]=== [2019-12-07 13:53:06,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:53:06,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1728099290, now seen corresponding path program 1 times [2019-12-07 13:53:06,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:53:06,765 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438580739] [2019-12-07 13:53:06,765 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:53:06,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:53:06,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:53:06,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:53:06,904 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438580739] [2019-12-07 13:53:06,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:53:06,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 13:53:06,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754294656] [2019-12-07 13:53:06,908 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 13:53:06,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:53:06,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 13:53:06,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:53:06,919 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 4 states. [2019-12-07 13:53:06,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:53:06,974 INFO L93 Difference]: Finished difference Result 27 states and 26 transitions. [2019-12-07 13:53:06,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 13:53:06,976 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-07 13:53:06,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:53:06,982 INFO L225 Difference]: With dead ends: 27 [2019-12-07 13:53:06,982 INFO L226 Difference]: Without dead ends: 24 [2019-12-07 13:53:06,983 INFO L630 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 [2019-12-07 13:53:06,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-12-07 13:53:07,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-12-07 13:53:07,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-12-07 13:53:07,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 23 transitions. [2019-12-07 13:53:07,006 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 23 transitions. Word has length 10 [2019-12-07 13:53:07,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:53:07,006 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 23 transitions. [2019-12-07 13:53:07,006 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 13:53:07,006 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 23 transitions. [2019-12-07 13:53:07,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 13:53:07,007 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:53:07,007 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:53:07,007 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, foo2Err0REQUIRES_VIOLATION, foo2Err1REQUIRES_VIOLATION]=== [2019-12-07 13:53:07,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:53:07,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1728099291, now seen corresponding path program 1 times [2019-12-07 13:53:07,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:53:07,007 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782731769] [2019-12-07 13:53:07,008 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:53:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:53:07,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:53:07,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:53:07,060 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782731769] [2019-12-07 13:53:07,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:53:07,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 13:53:07,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083648617] [2019-12-07 13:53:07,062 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 13:53:07,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:53:07,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 13:53:07,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:53:07,063 INFO L87 Difference]: Start difference. First operand 24 states and 23 transitions. Second operand 4 states. [2019-12-07 13:53:07,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:53:07,099 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2019-12-07 13:53:07,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 13:53:07,099 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-07 13:53:07,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:53:07,100 INFO L225 Difference]: With dead ends: 23 [2019-12-07 13:53:07,100 INFO L226 Difference]: Without dead ends: 23 [2019-12-07 13:53:07,101 INFO L630 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 [2019-12-07 13:53:07,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-12-07 13:53:07,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-12-07 13:53:07,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-12-07 13:53:07,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2019-12-07 13:53:07,103 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 10 [2019-12-07 13:53:07,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:53:07,104 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2019-12-07 13:53:07,104 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 13:53:07,104 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2019-12-07 13:53:07,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-07 13:53:07,104 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:53:07,104 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:53:07,105 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, foo2Err0REQUIRES_VIOLATION, foo2Err1REQUIRES_VIOLATION]=== [2019-12-07 13:53:07,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:53:07,105 INFO L82 PathProgramCache]: Analyzing trace with hash 688977249, now seen corresponding path program 1 times [2019-12-07 13:53:07,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:53:07,105 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485871378] [2019-12-07 13:53:07,105 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:53:07,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:53:07,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:53:07,150 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 13:53:07,151 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 13:53:07,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 01:53:07 BoogieIcfgContainer [2019-12-07 13:53:07,167 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 13:53:07,168 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 13:53:07,168 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 13:53:07,168 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 13:53:07,168 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:53:06" (3/4) ... [2019-12-07 13:53:07,169 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 13:53:07,197 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e0d190f2-79d2-4c46-80bf-200f876b3786/bin/uautomizer/witness.graphml [2019-12-07 13:53:07,197 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 13:53:07,198 INFO L168 Benchmark]: Toolchain (without parser) took 860.45 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 75.0 MB). Free memory was 943.4 MB in the beginning and 992.6 MB in the end (delta: -49.3 MB). Peak memory consumption was 25.7 MB. Max. memory is 11.5 GB. [2019-12-07 13:53:07,199 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:53:07,199 INFO L168 Benchmark]: CACSL2BoogieTranslator took 186.35 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 75.0 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -126.7 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. [2019-12-07 13:53:07,199 INFO L168 Benchmark]: Boogie Preprocessor took 20.00 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:53:07,200 INFO L168 Benchmark]: RCFGBuilder took 159.25 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2019-12-07 13:53:07,200 INFO L168 Benchmark]: TraceAbstraction took 462.62 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 992.6 MB in the end (delta: 53.7 MB). Peak memory consumption was 53.7 MB. Max. memory is 11.5 GB. [2019-12-07 13:53:07,200 INFO L168 Benchmark]: Witness Printer took 29.34 ms. Allocated memory is still 1.1 GB. Free memory is still 992.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:53:07,202 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 186.35 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 75.0 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -126.7 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.00 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 159.25 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 462.62 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 992.6 MB in the end (delta: 53.7 MB). Peak memory consumption was 53.7 MB. Max. memory is 11.5 GB. * Witness Printer took 29.34 ms. Allocated memory is still 1.1 GB. Free memory is still 992.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 18]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L17] CALL, EXPR foo() [L12] int arr[123]; [L13] CALL, EXPR foo2() [L5] int arr[1024]; VAL [arr={5:0}] [L6] arr[194] = 13 VAL [arr={5:0}] [L7] return arr + 1; [L7] return arr + 1; VAL [\result={5:4}] [L13] RET, EXPR foo2() VAL [foo2()={5:4}] [L13] return foo2(); [L17] RET, EXPR foo() VAL [foo()={5:4}] [L17] int *a = foo(); [L18] \read(*a) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 28 locations, 5 error locations. Result: UNSAFE, OverallTime: 0.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 39 SDtfs, 5 SDslu, 33 SDs, 0 SdLazy, 57 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 594 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...