./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memset3_-write.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cf255d-1212-4c3a-abe3-c0a7c4b42f73/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cf255d-1212-4c3a-abe3-c0a7c4b42f73/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cf255d-1212-4c3a-abe3-c0a7c4b42f73/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cf255d-1212-4c3a-abe3-c0a7c4b42f73/bin/uautomizer-ZXIjhQolGL/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memset3_-write.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cf255d-1212-4c3a-abe3-c0a7c4b42f73/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cf255d-1212-4c3a-abe3-c0a7c4b42f73/bin/uautomizer-ZXIjhQolGL --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 4f4c34e89258ad08f5ff0f3cdaddc883f4834617a4558e66914b1b5dcd1f7778 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 04:41:31,613 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 04:41:31,615 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 04:41:31,673 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 04:41:31,673 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 04:41:31,675 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 04:41:31,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 04:41:31,684 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 04:41:31,687 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 04:41:31,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 04:41:31,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 04:41:31,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 04:41:31,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 04:41:31,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 04:41:31,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 04:41:31,709 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 04:41:31,711 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 04:41:31,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 04:41:31,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 04:41:31,727 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 04:41:31,729 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 04:41:31,731 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 04:41:31,734 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 04:41:31,735 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 04:41:31,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 04:41:31,740 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 04:41:31,741 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 04:41:31,743 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 04:41:31,743 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 04:41:31,745 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 04:41:31,745 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 04:41:31,746 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 04:41:31,748 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 04:41:31,750 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 04:41:31,752 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 04:41:31,752 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 04:41:31,753 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 04:41:31,753 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 04:41:31,753 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 04:41:31,755 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 04:41:31,755 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 04:41:31,756 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cf255d-1212-4c3a-abe3-c0a7c4b42f73/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-19 04:41:31,804 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 04:41:31,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 04:41:31,805 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 04:41:31,806 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 04:41:31,807 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 04:41:31,807 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 04:41:31,808 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 04:41:31,808 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 04:41:31,808 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 04:41:31,808 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 04:41:31,810 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 04:41:31,810 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 04:41:31,810 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 04:41:31,810 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 04:41:31,810 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 04:41:31,811 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 04:41:31,811 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 04:41:31,811 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 04:41:31,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 04:41:31,811 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 04:41:31,812 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 04:41:31,812 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 04:41:31,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 04:41:31,812 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 04:41:31,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 04:41:31,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:41:31,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 04:41:31,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 04:41:31,814 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 04:41:31,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 04:41:31,815 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 04:41:31,816 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_57cf255d-1212-4c3a-abe3-c0a7c4b42f73/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cf255d-1212-4c3a-abe3-c0a7c4b42f73/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f4c34e89258ad08f5ff0f3cdaddc883f4834617a4558e66914b1b5dcd1f7778 [2021-11-19 04:41:32,130 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 04:41:32,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 04:41:32,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 04:41:32,156 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 04:41:32,157 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 04:41:32,158 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cf255d-1212-4c3a-abe3-c0a7c4b42f73/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/ldv-memsafety/memset3_-write.c [2021-11-19 04:41:32,247 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cf255d-1212-4c3a-abe3-c0a7c4b42f73/bin/uautomizer-ZXIjhQolGL/data/bc740d6c2/48ec0e7ad01540b5a7d20881e95af69f/FLAG26ec23791 [2021-11-19 04:41:32,800 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 04:41:32,800 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cf255d-1212-4c3a-abe3-c0a7c4b42f73/sv-benchmarks/c/ldv-memsafety/memset3_-write.c [2021-11-19 04:41:32,812 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cf255d-1212-4c3a-abe3-c0a7c4b42f73/bin/uautomizer-ZXIjhQolGL/data/bc740d6c2/48ec0e7ad01540b5a7d20881e95af69f/FLAG26ec23791 [2021-11-19 04:41:33,154 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cf255d-1212-4c3a-abe3-c0a7c4b42f73/bin/uautomizer-ZXIjhQolGL/data/bc740d6c2/48ec0e7ad01540b5a7d20881e95af69f [2021-11-19 04:41:33,156 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 04:41:33,160 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-19 04:41:33,164 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 04:41:33,165 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 04:41:33,169 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 04:41:33,170 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:41:33" (1/1) ... [2021-11-19 04:41:33,174 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d786aa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:41:33, skipping insertion in model container [2021-11-19 04:41:33,174 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:41:33" (1/1) ... [2021-11-19 04:41:33,181 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 04:41:33,198 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:41:33,416 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:41:33,437 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 04:41:33,464 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:41:33,482 INFO L208 MainTranslator]: Completed translation [2021-11-19 04:41:33,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:41:33 WrapperNode [2021-11-19 04:41:33,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 04:41:33,485 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 04:41:33,485 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 04:41:33,487 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 04:41:33,500 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:41:33" (1/1) ... [2021-11-19 04:41:33,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:41:33" (1/1) ... [2021-11-19 04:41:33,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:41:33" (1/1) ... [2021-11-19 04:41:33,508 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:41:33" (1/1) ... [2021-11-19 04:41:33,515 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:41:33" (1/1) ... [2021-11-19 04:41:33,519 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:41:33" (1/1) ... [2021-11-19 04:41:33,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:41:33" (1/1) ... [2021-11-19 04:41:33,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 04:41:33,531 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 04:41:33,531 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 04:41:33,531 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 04:41:33,532 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:41:33" (1/1) ... [2021-11-19 04:41:33,541 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:41:33,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cf255d-1212-4c3a-abe3-c0a7c4b42f73/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:41:33,572 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cf255d-1212-4c3a-abe3-c0a7c4b42f73/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 04:41:33,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cf255d-1212-4c3a-abe3-c0a7c4b42f73/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 04:41:33,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-19 04:41:33,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 04:41:33,624 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-19 04:41:33,624 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 04:41:33,624 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-19 04:41:33,625 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-19 04:41:33,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 04:41:33,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 04:41:33,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 04:41:33,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-19 04:41:33,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 04:41:33,703 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 04:41:33,705 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 04:41:33,761 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-19 04:41:33,850 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 04:41:33,862 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 04:41:33,874 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 04:41:33,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:41:33 BoogieIcfgContainer [2021-11-19 04:41:33,877 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 04:41:33,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 04:41:33,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 04:41:33,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 04:41:33,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:41:33" (1/3) ... [2021-11-19 04:41:33,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@115391ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:41:33, skipping insertion in model container [2021-11-19 04:41:33,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:41:33" (2/3) ... [2021-11-19 04:41:33,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@115391ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:41:33, skipping insertion in model container [2021-11-19 04:41:33,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:41:33" (3/3) ... [2021-11-19 04:41:33,897 INFO L111 eAbstractionObserver]: Analyzing ICFG memset3_-write.c [2021-11-19 04:41:33,903 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 04:41:33,903 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-19 04:41:33,953 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 04:41:33,961 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 [2021-11-19 04:41:33,961 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-19 04:41:33,991 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 04:41:34,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 04:41:34,000 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:41:34,001 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:41:34,002 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK] === [2021-11-19 04:41:34,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:41:34,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1092847368, now seen corresponding path program 1 times [2021-11-19 04:41:34,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:41:34,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829948652] [2021-11-19 04:41:34,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:41:34,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:41:34,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:34,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:41:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:34,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:41:34,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:41:34,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829948652] [2021-11-19 04:41:34,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829948652] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:41:34,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:41:34,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 04:41:34,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690693928] [2021-11-19 04:41:34,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:41:34,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:41:34,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:41:34,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:41:34,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:41:34,334 INFO L87 Difference]: Start difference. First operand has 20 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:41:34,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:41:34,416 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-11-19 04:41:34,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:41:34,420 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-19 04:41:34,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:41:34,451 INFO L225 Difference]: With dead ends: 19 [2021-11-19 04:41:34,472 INFO L226 Difference]: Without dead ends: 16 [2021-11-19 04:41:34,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:41:34,478 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 10 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:41:34,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 25 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:41:34,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-19 04:41:34,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-19 04:41:34,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 04:41:34,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-11-19 04:41:34,529 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2021-11-19 04:41:34,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:41:34,529 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-11-19 04:41:34,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:41:34,530 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-11-19 04:41:34,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 04:41:34,530 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:41:34,530 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:41:34,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 04:41:34,531 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK] === [2021-11-19 04:41:34,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:41:34,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1092847367, now seen corresponding path program 1 times [2021-11-19 04:41:34,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:41:34,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484578433] [2021-11-19 04:41:34,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:41:34,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:41:34,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:41:34,566 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 04:41:34,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:41:34,605 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 04:41:34,605 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 04:41:34,608 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr1REQUIRES_VIOLATION (2 of 3 remaining) [2021-11-19 04:41:34,610 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION (1 of 3 remaining) [2021-11-19 04:41:34,611 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2ENSURES_VIOLATIONMEMORY_LEAK (0 of 3 remaining) [2021-11-19 04:41:34,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 04:41:34,616 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-19 04:41:34,619 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 04:41:34,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:41:34 BoogieIcfgContainer [2021-11-19 04:41:34,649 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 04:41:34,649 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 04:41:34,650 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 04:41:34,650 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 04:41:34,650 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:41:33" (3/4) ... [2021-11-19 04:41:34,652 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-19 04:41:34,692 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cf255d-1212-4c3a-abe3-c0a7c4b42f73/bin/uautomizer-ZXIjhQolGL/witness.graphml [2021-11-19 04:41:34,692 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 04:41:34,694 INFO L158 Benchmark]: Toolchain (without parser) took 1533.73ms. Allocated memory was 92.3MB in the beginning and 113.2MB in the end (delta: 21.0MB). Free memory was 59.3MB in the beginning and 81.5MB in the end (delta: -22.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 04:41:34,695 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 92.3MB. Free memory was 49.2MB in the beginning and 49.2MB in the end (delta: 39.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 04:41:34,695 INFO L158 Benchmark]: CACSL2BoogieTranslator took 319.89ms. Allocated memory was 92.3MB in the beginning and 113.2MB in the end (delta: 21.0MB). Free memory was 59.0MB in the beginning and 90.0MB in the end (delta: -31.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 04:41:34,696 INFO L158 Benchmark]: Boogie Preprocessor took 44.77ms. Allocated memory is still 113.2MB. Free memory was 90.0MB in the beginning and 88.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 04:41:34,696 INFO L158 Benchmark]: RCFGBuilder took 346.59ms. Allocated memory is still 113.2MB. Free memory was 88.5MB in the beginning and 79.5MB in the end (delta: 9.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 04:41:34,697 INFO L158 Benchmark]: TraceAbstraction took 769.75ms. Allocated memory is still 113.2MB. Free memory was 79.2MB in the beginning and 83.1MB in the end (delta: -4.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 04:41:34,699 INFO L158 Benchmark]: Witness Printer took 43.24ms. Allocated memory is still 113.2MB. Free memory was 83.1MB in the beginning and 81.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 04:41:34,703 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 92.3MB. Free memory was 49.2MB in the beginning and 49.2MB in the end (delta: 39.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 319.89ms. Allocated memory was 92.3MB in the beginning and 113.2MB in the end (delta: 21.0MB). Free memory was 59.0MB in the beginning and 90.0MB in the end (delta: -31.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.77ms. Allocated memory is still 113.2MB. Free memory was 90.0MB in the beginning and 88.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 346.59ms. Allocated memory is still 113.2MB. Free memory was 88.5MB in the beginning and 79.5MB in the end (delta: 9.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 769.75ms. Allocated memory is still 113.2MB. Free memory was 79.2MB in the beginning and 83.1MB in the end (delta: -4.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 43.24ms. Allocated memory is still 113.2MB. Free memory was 83.1MB in the beginning and 81.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * 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: 29]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L26] struct ppp_comp_stats cstats ; [L27] void *point; [L28] point = (void *)(& cstats) VAL [cstats={2:0}, point={2:0}] - UnprovableResult [Line: 29]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 25]: 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 4 procedures, 20 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15 IncrementalHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 16 mSDtfsCounter, 15 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-19 04:41:34,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57cf255d-1212-4c3a-abe3-c0a7c4b42f73/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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)