./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/scopes2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505a2925-917a-483e-8be4-91768b150c54/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505a2925-917a-483e-8be4-91768b150c54/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505a2925-917a-483e-8be4-91768b150c54/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505a2925-917a-483e-8be4-91768b150c54/bin/utaipan-SDwSMHVbGG/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/scopes2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505a2925-917a-483e-8be4-91768b150c54/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505a2925-917a-483e-8be4-91768b150c54/bin/utaipan-SDwSMHVbGG --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4971cb0b49f8cd6920aed64e922b55ffc2bc14d188aa433fccbb1000a12773a3 ................................................................................................................................................................................................................................................................... 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 0.2.1-dev-b2eff8b [2021-10-29 05:02:27,109 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:02:27,112 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:02:27,170 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:02:27,171 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:02:27,172 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:02:27,174 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:02:27,177 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:02:27,179 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:02:27,181 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:02:27,182 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:02:27,184 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:02:27,185 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:02:27,186 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:02:27,188 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:02:27,190 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:02:27,192 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:02:27,193 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:02:27,196 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:02:27,199 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:02:27,201 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:02:27,203 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:02:27,205 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:02:27,206 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:02:27,210 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:02:27,211 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:02:27,211 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:02:27,213 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:02:27,213 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:02:27,215 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:02:27,215 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:02:27,216 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:02:27,218 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:02:27,219 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:02:27,220 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:02:27,221 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:02:27,222 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:02:27,222 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:02:27,223 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:02:27,224 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:02:27,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:02:27,227 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505a2925-917a-483e-8be4-91768b150c54/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-29 05:02:27,258 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:02:27,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:02:27,260 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:02:27,260 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:02:27,260 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:02:27,261 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:02:27,261 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:02:27,261 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:02:27,262 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:02:27,262 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:02:27,262 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:02:27,262 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:02:27,263 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:02:27,263 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:02:27,263 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:02:27,264 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 05:02:27,264 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 05:02:27,265 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:02:27,265 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:02:27,265 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-29 05:02:27,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:02:27,266 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:02:27,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:02:27,266 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-29 05:02:27,267 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-29 05:02:27,267 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-29 05:02:27,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:02:27,267 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:02:27,268 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:02:27,268 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:02:27,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:02:27,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:02:27,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:02:27,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:02:27,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:02:27,270 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:02:27,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:02:27,270 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:02:27,271 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:02:27,271 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_worker_vcloud-master_on_vcloud-master/run_dir_505a2925-917a-483e-8be4-91768b150c54/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505a2925-917a-483e-8be4-91768b150c54/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4971cb0b49f8cd6920aed64e922b55ffc2bc14d188aa433fccbb1000a12773a3 [2021-10-29 05:02:27,687 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:02:27,714 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:02:27,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:02:27,719 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:02:27,720 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:02:27,721 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505a2925-917a-483e-8be4-91768b150c54/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/memsafety-ext3/scopes2.c [2021-10-29 05:02:27,788 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505a2925-917a-483e-8be4-91768b150c54/bin/utaipan-SDwSMHVbGG/data/ace186ecd/a5bf174a1d1048bb96b47118b9001567/FLAG6610eb373 [2021-10-29 05:02:28,280 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:02:28,283 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505a2925-917a-483e-8be4-91768b150c54/sv-benchmarks/c/memsafety-ext3/scopes2.c [2021-10-29 05:02:28,315 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505a2925-917a-483e-8be4-91768b150c54/bin/utaipan-SDwSMHVbGG/data/ace186ecd/a5bf174a1d1048bb96b47118b9001567/FLAG6610eb373 [2021-10-29 05:02:28,646 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505a2925-917a-483e-8be4-91768b150c54/bin/utaipan-SDwSMHVbGG/data/ace186ecd/a5bf174a1d1048bb96b47118b9001567 [2021-10-29 05:02:28,648 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:02:28,650 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:02:28,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:02:28,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:02:28,655 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:02:28,655 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:02:28" (1/1) ... [2021-10-29 05:02:28,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d69d61b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:02:28, skipping insertion in model container [2021-10-29 05:02:28,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:02:28" (1/1) ... [2021-10-29 05:02:28,665 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:02:28,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:02:28,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:02:28,847 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:02:28,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:02:28,881 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:02:28,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:02:28 WrapperNode [2021-10-29 05:02:28,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:02:28,883 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:02:28,883 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:02:28,883 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:02:28,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:02:28" (1/1) ... [2021-10-29 05:02:28,902 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:02:28" (1/1) ... [2021-10-29 05:02:28,935 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:02:28,936 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:02:28,936 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:02:28,936 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:02:28,948 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:02:28" (1/1) ... [2021-10-29 05:02:28,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:02:28" (1/1) ... [2021-10-29 05:02:28,964 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:02:28" (1/1) ... [2021-10-29 05:02:28,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:02:28" (1/1) ... [2021-10-29 05:02:28,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:02:28" (1/1) ... [2021-10-29 05:02:28,971 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:02:28" (1/1) ... [2021-10-29 05:02:28,972 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:02:28" (1/1) ... [2021-10-29 05:02:28,974 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:02:28,975 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:02:28,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:02:28,976 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:02:28,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:02:28" (1/1) ... [2021-10-29 05:02:28,992 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:02:29,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505a2925-917a-483e-8be4-91768b150c54/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:02:29,029 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505a2925-917a-483e-8be4-91768b150c54/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:02:29,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505a2925-917a-483e-8be4-91768b150c54/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:02:29,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:02:29,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:02:29,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-29 05:02:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:02:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:02:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 05:02:29,451 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:02:29,452 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-29 05:02:29,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:02:29 BoogieIcfgContainer [2021-10-29 05:02:29,455 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:02:29,457 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:02:29,457 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:02:29,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:02:29,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:02:28" (1/3) ... [2021-10-29 05:02:29,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7480151c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:02:29, skipping insertion in model container [2021-10-29 05:02:29,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:02:28" (2/3) ... [2021-10-29 05:02:29,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7480151c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:02:29, skipping insertion in model container [2021-10-29 05:02:29,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:02:29" (3/3) ... [2021-10-29 05:02:29,465 INFO L111 eAbstractionObserver]: Analyzing ICFG scopes2.c [2021-10-29 05:02:29,471 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:02:29,471 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-10-29 05:02:29,526 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:02:29,535 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 05:02:29,535 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-29 05:02:29,553 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 4 states have (on average 2.25) internal successors, (9), 9 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:02:29,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-29 05:02:29,560 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:02:29,561 INFO L513 BasicCegarLoop]: trace histogram [1, 1] [2021-10-29 05:02:29,561 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-10-29 05:02:29,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:02:29,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1778, now seen corresponding path program 1 times [2021-10-29 05:02:29,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:02:29,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312148302] [2021-10-29 05:02:29,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:02:29,583 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:02:29,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:02:29,714 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:02:29,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:02:29,817 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 05:02:29,820 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:02:29,821 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-29 05:02:29,824 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-29 05:02:29,824 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-29 05:02:29,825 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-29 05:02:29,825 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 05:02:29,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:02:29,846 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-10-29 05:02:29,850 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:02:29,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:02:29 BoogieIcfgContainer [2021-10-29 05:02:29,870 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:02:29,871 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:02:29,871 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:02:29,872 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:02:29,872 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:02:29" (3/4) ... [2021-10-29 05:02:29,875 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 05:02:29,933 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505a2925-917a-483e-8be4-91768b150c54/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:02:29,935 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:02:29,938 INFO L168 Benchmark]: Toolchain (without parser) took 1286.23 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 73.9 MB in the beginning and 90.9 MB in the end (delta: -17.0 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2021-10-29 05:02:29,939 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 96.5 MB. Free memory was 72.4 MB in the beginning and 72.3 MB in the end (delta: 58.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:02:29,941 INFO L168 Benchmark]: CACSL2BoogieTranslator took 230.61 ms. Allocated memory is still 96.5 MB. Free memory was 73.7 MB in the beginning and 64.8 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:02:29,942 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.27 ms. Allocated memory is still 96.5 MB. Free memory was 64.6 MB in the beginning and 63.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:02:29,946 INFO L168 Benchmark]: Boogie Preprocessor took 38.62 ms. Allocated memory is still 96.5 MB. Free memory was 63.3 MB in the beginning and 62.3 MB in the end (delta: 997.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:02:29,948 INFO L168 Benchmark]: RCFGBuilder took 479.43 ms. Allocated memory is still 96.5 MB. Free memory was 62.3 MB in the beginning and 49.1 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:02:29,951 INFO L168 Benchmark]: TraceAbstraction took 413.69 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 48.7 MB in the beginning and 92.3 MB in the end (delta: -43.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:02:29,952 INFO L168 Benchmark]: Witness Printer took 63.78 ms. Allocated memory is still 117.4 MB. Free memory was 92.3 MB in the beginning and 90.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:02:29,956 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 96.5 MB. Free memory was 72.4 MB in the beginning and 72.3 MB in the end (delta: 58.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 230.61 ms. Allocated memory is still 96.5 MB. Free memory was 73.7 MB in the beginning and 64.8 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.27 ms. Allocated memory is still 96.5 MB. Free memory was 64.6 MB in the beginning and 63.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.62 ms. Allocated memory is still 96.5 MB. Free memory was 63.3 MB in the beginning and 62.3 MB in the end (delta: 997.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 479.43 ms. Allocated memory is still 96.5 MB. Free memory was 62.3 MB in the beginning and 49.1 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 413.69 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 48.7 MB in the beginning and 92.3 MB in the end (delta: -43.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 16.1 GB. * Witness Printer took 63.78 ms. Allocated memory is still 117.4 MB. Free memory was 92.3 MB in the beginning and 90.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 18]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L5] int *myPointerA = ((void*) 0); [L6] int *myPointerB = ((void*) 0); [L8] COND FALSE !(__VERIFIER_nondet_int()) [L15] int myNumberB = 3; [L16] myPointerB = &myNumberB [L18] \read(*myPointerA) - UnprovableResult [Line: 18]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 4]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 2 NumberOfCodeBlocks, 2 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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! [2021-10-29 05:02:30,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_505a2925-917a-483e-8be4-91768b150c54/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...