./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/960521-1_1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c9260a6-5324-410b-8a2e-a79c102af8a0/bin/ukojak-92XMlrwhuB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c9260a6-5324-410b-8a2e-a79c102af8a0/bin/ukojak-92XMlrwhuB/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c9260a6-5324-410b-8a2e-a79c102af8a0/bin/ukojak-92XMlrwhuB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c9260a6-5324-410b-8a2e-a79c102af8a0/bin/ukojak-92XMlrwhuB/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/960521-1_1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c9260a6-5324-410b-8a2e-a79c102af8a0/bin/ukojak-92XMlrwhuB/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c9260a6-5324-410b-8a2e-a79c102af8a0/bin/ukojak-92XMlrwhuB --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 Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1bdc21b2f61b0d69220994ec3f8dc9d2db928c146bd54c19e0632aa07d01871a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 16:52:00,848 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 16:52:00,850 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 16:52:00,895 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 16:52:00,896 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 16:52:00,897 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 16:52:00,899 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 16:52:00,907 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 16:52:00,909 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 16:52:00,910 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 16:52:00,911 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 16:52:00,913 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 16:52:00,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 16:52:00,915 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 16:52:00,916 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 16:52:00,922 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 16:52:00,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 16:52:00,932 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 16:52:00,935 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 16:52:00,940 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 16:52:00,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 16:52:00,944 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 16:52:00,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 16:52:00,949 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 16:52:00,953 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 16:52:00,954 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 16:52:00,954 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 16:52:00,955 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 16:52:00,956 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 16:52:00,957 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 16:52:00,957 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 16:52:00,958 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 16:52:00,959 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 16:52:00,960 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 16:52:00,967 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 16:52:00,967 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 16:52:00,968 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 16:52:00,968 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 16:52:00,969 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 16:52:00,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 16:52:00,970 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 16:52:00,971 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c9260a6-5324-410b-8a2e-a79c102af8a0/bin/ukojak-92XMlrwhuB/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2022-10-17 16:52:01,017 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 16:52:01,017 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 16:52:01,019 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 16:52:01,019 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 16:52:01,020 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 16:52:01,020 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 16:52:01,020 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 16:52:01,020 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 16:52:01,021 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 16:52:01,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 16:52:01,022 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-17 16:52:01,022 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-17 16:52:01,022 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-17 16:52:01,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 16:52:01,022 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 16:52:01,023 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 16:52:01,023 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-10-17 16:52:01,023 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-10-17 16:52:01,023 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 16:52:01,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-10-17 16:52:01,024 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 16:52:01,024 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 16:52:01,024 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2022-10-17 16:52:01,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 16:52:01,024 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_worker_vcloud-master_on_vcloud-master/run_dir_7c9260a6-5324-410b-8a2e-a79c102af8a0/bin/ukojak-92XMlrwhuB/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c9260a6-5324-410b-8a2e-a79c102af8a0/bin/ukojak-92XMlrwhuB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1bdc21b2f61b0d69220994ec3f8dc9d2db928c146bd54c19e0632aa07d01871a [2022-10-17 16:52:01,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 16:52:01,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 16:52:01,342 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 16:52:01,344 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 16:52:01,344 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 16:52:01,346 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c9260a6-5324-410b-8a2e-a79c102af8a0/bin/ukojak-92XMlrwhuB/../../sv-benchmarks/c/list-ext-properties/960521-1_1-1.i [2022-10-17 16:52:01,439 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c9260a6-5324-410b-8a2e-a79c102af8a0/bin/ukojak-92XMlrwhuB/data/7445d1112/53bfbc48bef84e8281d9a04ee313ed43/FLAG531e31631 [2022-10-17 16:52:01,921 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 16:52:01,922 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c9260a6-5324-410b-8a2e-a79c102af8a0/sv-benchmarks/c/list-ext-properties/960521-1_1-1.i [2022-10-17 16:52:01,937 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c9260a6-5324-410b-8a2e-a79c102af8a0/bin/ukojak-92XMlrwhuB/data/7445d1112/53bfbc48bef84e8281d9a04ee313ed43/FLAG531e31631 [2022-10-17 16:52:02,248 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c9260a6-5324-410b-8a2e-a79c102af8a0/bin/ukojak-92XMlrwhuB/data/7445d1112/53bfbc48bef84e8281d9a04ee313ed43 [2022-10-17 16:52:02,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 16:52:02,253 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 16:52:02,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 16:52:02,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 16:52:02,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 16:52:02,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 04:52:02" (1/1) ... [2022-10-17 16:52:02,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55d35ce0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:52:02, skipping insertion in model container [2022-10-17 16:52:02,260 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 04:52:02" (1/1) ... [2022-10-17 16:52:02,267 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 16:52:02,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 16:52:02,646 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 16:52:02,654 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 16:52:02,689 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 16:52:02,717 INFO L208 MainTranslator]: Completed translation [2022-10-17 16:52:02,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:52:02 WrapperNode [2022-10-17 16:52:02,718 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 16:52:02,719 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 16:52:02,719 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 16:52:02,719 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 16:52:02,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:52:02" (1/1) ... [2022-10-17 16:52:02,740 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:52:02" (1/1) ... [2022-10-17 16:52:02,761 INFO L138 Inliner]: procedures = 122, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 75 [2022-10-17 16:52:02,761 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 16:52:02,762 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 16:52:02,762 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 16:52:02,762 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 16:52:02,771 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:52:02" (1/1) ... [2022-10-17 16:52:02,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:52:02" (1/1) ... [2022-10-17 16:52:02,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:52:02" (1/1) ... [2022-10-17 16:52:02,775 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:52:02" (1/1) ... [2022-10-17 16:52:02,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:52:02" (1/1) ... [2022-10-17 16:52:02,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:52:02" (1/1) ... [2022-10-17 16:52:02,796 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:52:02" (1/1) ... [2022-10-17 16:52:02,797 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:52:02" (1/1) ... [2022-10-17 16:52:02,800 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 16:52:02,808 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 16:52:02,808 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 16:52:02,808 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 16:52:02,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:52:02" (1/1) ... [2022-10-17 16:52:02,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-10-17 16:52:02,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c9260a6-5324-410b-8a2e-a79c102af8a0/bin/ukojak-92XMlrwhuB/z3 [2022-10-17 16:52:02,842 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c9260a6-5324-410b-8a2e-a79c102af8a0/bin/ukojak-92XMlrwhuB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-10-17 16:52:02,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c9260a6-5324-410b-8a2e-a79c102af8a0/bin/ukojak-92XMlrwhuB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-10-17 16:52:02,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 16:52:02,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 16:52:02,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 16:52:02,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 16:52:02,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 16:52:02,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 16:52:02,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 16:52:02,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 16:52:03,014 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 16:52:03,016 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 16:52:03,201 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 16:52:03,235 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 16:52:03,236 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-10-17 16:52:03,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 04:52:03 BoogieIcfgContainer [2022-10-17 16:52:03,238 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 16:52:03,239 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-10-17 16:52:03,239 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-10-17 16:52:03,250 INFO L275 PluginConnector]: CodeCheck initialized [2022-10-17 16:52:03,251 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 04:52:03" (1/1) ... [2022-10-17 16:52:03,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 16:52:03,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:52:03,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 47 states and 51 transitions. [2022-10-17 16:52:03,352 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2022-10-17 16:52:03,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-17 16:52:03,354 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:52:03,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:52:03,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:52:03,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 16:52:03,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:52:03,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 47 states and 50 transitions. [2022-10-17 16:52:03,588 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2022-10-17 16:52:03,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-17 16:52:03,589 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:52:03,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:52:03,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:52:03,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 16:52:03,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:52:03,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 46 states and 49 transitions. [2022-10-17 16:52:03,829 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2022-10-17 16:52:03,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-17 16:52:03,829 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:52:03,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:52:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:52:04,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 16:52:04,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:52:04,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 50 states and 56 transitions. [2022-10-17 16:52:04,224 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2022-10-17 16:52:04,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-17 16:52:04,225 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:52:04,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:52:04,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:52:04,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 16:52:04,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:52:04,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 52 states and 60 transitions. [2022-10-17 16:52:04,531 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2022-10-17 16:52:04,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-17 16:52:04,532 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:52:04,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:52:04,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:52:04,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 16:52:05,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:52:05,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 55 states and 65 transitions. [2022-10-17 16:52:05,196 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2022-10-17 16:52:05,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-17 16:52:05,199 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:52:05,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:52:05,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:52:05,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 16:52:05,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:52:05,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 50 states and 55 transitions. [2022-10-17 16:52:05,443 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2022-10-17 16:52:05,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-17 16:52:05,443 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:52:05,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:52:05,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:52:05,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 16:52:05,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:52:05,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 52 states and 59 transitions. [2022-10-17 16:52:05,959 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2022-10-17 16:52:05,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-17 16:52:05,959 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:52:05,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:52:05,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:52:06,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 16:52:06,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:52:06,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 53 states and 62 transitions. [2022-10-17 16:52:06,724 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2022-10-17 16:52:06,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-17 16:52:06,724 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:52:06,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:52:06,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:52:06,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 16:52:07,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:52:07,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 57 states and 72 transitions. [2022-10-17 16:52:07,713 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 72 transitions. [2022-10-17 16:52:07,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-17 16:52:07,714 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:52:07,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:52:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 16:52:07,742 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 16:52:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 16:52:07,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 16:52:07,810 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 16:52:07,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 16:52:07,856 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 10 iterations. [2022-10-17 16:52:07,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 17.10 04:52:07 ImpRootNode [2022-10-17 16:52:07,918 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2022-10-17 16:52:07,918 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 16:52:07,919 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 16:52:07,919 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 16:52:07,919 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 04:52:03" (3/4) ... [2022-10-17 16:52:07,921 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-10-17 16:52:07,997 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c9260a6-5324-410b-8a2e-a79c102af8a0/bin/ukojak-92XMlrwhuB/witness.graphml [2022-10-17 16:52:07,998 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 16:52:07,999 INFO L158 Benchmark]: Toolchain (without parser) took 5745.31ms. Allocated memory was 94.4MB in the beginning and 117.4MB in the end (delta: 23.1MB). Free memory was 52.4MB in the beginning and 90.5MB in the end (delta: -38.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 16:52:07,999 INFO L158 Benchmark]: CDTParser took 0.66ms. Allocated memory is still 94.4MB. Free memory is still 71.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 16:52:08,000 INFO L158 Benchmark]: CACSL2BoogieTranslator took 462.93ms. Allocated memory is still 94.4MB. Free memory was 52.1MB in the beginning and 59.3MB in the end (delta: -7.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 16:52:08,001 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.60ms. Allocated memory is still 94.4MB. Free memory was 59.3MB in the beginning and 57.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 16:52:08,002 INFO L158 Benchmark]: Boogie Preprocessor took 45.04ms. Allocated memory is still 94.4MB. Free memory was 57.5MB in the beginning and 55.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 16:52:08,003 INFO L158 Benchmark]: RCFGBuilder took 430.91ms. Allocated memory is still 94.4MB. Free memory was 55.8MB in the beginning and 40.4MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-10-17 16:52:08,004 INFO L158 Benchmark]: CodeCheck took 4678.72ms. Allocated memory was 94.4MB in the beginning and 117.4MB in the end (delta: 23.1MB). Free memory was 40.4MB in the beginning and 92.6MB in the end (delta: -52.2MB). Peak memory consumption was 36.5MB. Max. memory is 16.1GB. [2022-10-17 16:52:08,004 INFO L158 Benchmark]: Witness Printer took 79.35ms. Allocated memory is still 117.4MB. Free memory was 92.6MB in the beginning and 90.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 16:52:08,009 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 1 procedures, 47 locations, 21 error locations. Started 1 CEGAR loops. OverallTime: 4.6s, OverallIterations: 10, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 204 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 87 mSDsluCounter, 124 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 46 mSDsCounter, 177 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 532 IncrementalHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 177 mSolverCounterUnsat, 82 mSDtfsCounter, 532 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 523 GetRequests, 434 SyntacticMatches, 3 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2788 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 73 NumberOfCodeBlocks, 73 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 244 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 6 PerfectInterpolantSequences, 2/7 InterpolantCoveringCapability, 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: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L523] int *a, *b; [L524] int n; [L536] n = 1 VAL [a={0:0}, b={0:0}, n=1] [L537] COND FALSE !(__VERIFIER_nondet_int() && n < 30) [L540] a = malloc(n * sizeof(*a)) [L541] b = malloc(n * sizeof(*b)) [L542] EXPR b++ VAL [a={-1:0}, b={-2:4}, b++={-2:0}, n=1] [L542] *b++ = 0 [L543] CALL foo() [L528] int i; [L529] i = 0 VAL [a={-1:0}, b={-2:4}, i=0, n=1] [L529] COND TRUE i < n VAL [a={-1:0}, b={-2:4}, i=0, n=1] [L530] a[i] = n [L529] i++ VAL [a={-1:0}, b={-2:4}, i=1, n=1] [L529] COND FALSE !(i < n) [L531] i = 0 VAL [a={-1:0}, b={-2:4}, i=0, n=1] [L531] COND FALSE !(i < n - 1) [L543] RET foo() [L544] b[-2] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.66ms. Allocated memory is still 94.4MB. Free memory is still 71.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 462.93ms. Allocated memory is still 94.4MB. Free memory was 52.1MB in the beginning and 59.3MB in the end (delta: -7.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.60ms. Allocated memory is still 94.4MB. Free memory was 59.3MB in the beginning and 57.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.04ms. Allocated memory is still 94.4MB. Free memory was 57.5MB in the beginning and 55.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 430.91ms. Allocated memory is still 94.4MB. Free memory was 55.8MB in the beginning and 40.4MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * CodeCheck took 4678.72ms. Allocated memory was 94.4MB in the beginning and 117.4MB in the end (delta: 23.1MB). Free memory was 40.4MB in the beginning and 92.6MB in the end (delta: -52.2MB). Peak memory consumption was 36.5MB. Max. memory is 16.1GB. * Witness Printer took 79.35ms. Allocated memory is still 117.4MB. Free memory was 92.6MB in the beginning and 90.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2022-10-17 16:52:08,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c9260a6-5324-410b-8a2e-a79c102af8a0/bin/ukojak-92XMlrwhuB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)