./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memset.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6280d92-fb6b-44b4-a934-6513f750841f/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6280d92-fb6b-44b4-a934-6513f750841f/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6280d92-fb6b-44b4-a934-6513f750841f/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6280d92-fb6b-44b4-a934-6513f750841f/bin/utaipan-WLngWcDbfI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memset.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6280d92-fb6b-44b4-a934-6513f750841f/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6280d92-fb6b-44b4-a934-6513f750841f/bin/utaipan-WLngWcDbfI --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 566f1414dafe692faf7ed7456be2d3e7d288640b ............................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:27:41,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:27:41,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:27:41,447 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:27:41,448 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:27:41,457 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:27:41,459 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:27:41,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:27:41,466 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:27:41,473 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:27:41,474 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:27:41,475 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:27:41,476 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:27:41,479 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:27:41,481 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:27:41,483 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:27:41,485 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:27:41,489 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:27:41,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:27:41,499 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:27:41,501 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:27:41,502 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:27:41,506 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:27:41,507 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:27:41,518 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:27:41,519 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:27:41,519 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:27:41,521 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:27:41,522 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:27:41,523 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:27:41,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:27:41,525 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:27:41,527 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:27:41,528 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:27:41,530 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:27:41,530 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:27:41,531 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:27:41,531 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:27:41,532 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:27:41,533 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:27:41,533 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:27:41,536 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6280d92-fb6b-44b4-a934-6513f750841f/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-11 02:27:41,587 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:27:41,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:27:41,589 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:27:41,590 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:27:41,590 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:27:41,597 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:27:41,597 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:27:41,597 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:27:41,597 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:27:41,598 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:27:41,599 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:27:41,599 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:27:41,600 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:27:41,600 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:27:41,600 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:27:41,601 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 02:27:41,602 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 02:27:41,602 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:27:41,602 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:27:41,603 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:27:41,603 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:27:41,603 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:27:41,603 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:27:41,604 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-11 02:27:41,604 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-11 02:27:41,604 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-11 02:27:41,606 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:27:41,606 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:27:41,606 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:27:41,607 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:27:41,607 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:27:41,607 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:27:41,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:27:41,608 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:27:41,608 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:27:41,608 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:27:41,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:27:41,609 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:27:41,609 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:27:41,609 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_a6280d92-fb6b-44b4-a934-6513f750841f/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6280d92-fb6b-44b4-a934-6513f750841f/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 566f1414dafe692faf7ed7456be2d3e7d288640b [2021-10-11 02:27:41,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:27:41,952 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:27:41,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:27:41,956 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:27:41,963 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:27:41,964 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6280d92-fb6b-44b4-a934-6513f750841f/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/ldv-memsafety/memset.c [2021-10-11 02:27:42,056 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6280d92-fb6b-44b4-a934-6513f750841f/bin/utaipan-WLngWcDbfI/data/515ee896e/3c870ec54b024eccb541688a58d0ab02/FLAGd20a74ad5 [2021-10-11 02:27:42,511 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:27:42,512 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6280d92-fb6b-44b4-a934-6513f750841f/sv-benchmarks/c/ldv-memsafety/memset.c [2021-10-11 02:27:42,521 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6280d92-fb6b-44b4-a934-6513f750841f/bin/utaipan-WLngWcDbfI/data/515ee896e/3c870ec54b024eccb541688a58d0ab02/FLAGd20a74ad5 [2021-10-11 02:27:42,897 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6280d92-fb6b-44b4-a934-6513f750841f/bin/utaipan-WLngWcDbfI/data/515ee896e/3c870ec54b024eccb541688a58d0ab02 [2021-10-11 02:27:42,899 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:27:42,901 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:27:42,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:42,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:27:42,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:27:42,906 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:42" (1/1) ... [2021-10-11 02:27:42,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d4d9774 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:42, skipping insertion in model container [2021-10-11 02:27:42,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:42" (1/1) ... [2021-10-11 02:27:42,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:27:42,928 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:27:43,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:43,094 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:27:43,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:43,119 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:27:43,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:43 WrapperNode [2021-10-11 02:27:43,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:43,121 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:43,121 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:27:43,121 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:27:43,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:43" (1/1) ... [2021-10-11 02:27:43,137 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:43" (1/1) ... [2021-10-11 02:27:43,155 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:43,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:27:43,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:27:43,157 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:27:43,165 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:43" (1/1) ... [2021-10-11 02:27:43,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:43" (1/1) ... [2021-10-11 02:27:43,167 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:43" (1/1) ... [2021-10-11 02:27:43,168 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:43" (1/1) ... [2021-10-11 02:27:43,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:43" (1/1) ... [2021-10-11 02:27:43,174 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:43" (1/1) ... [2021-10-11 02:27:43,175 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:43" (1/1) ... [2021-10-11 02:27:43,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:27:43,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:27:43,178 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:27:43,178 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:27:43,179 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:43" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6280d92-fb6b-44b4-a934-6513f750841f/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:27:43,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:27:43,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:27:43,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:27:43,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:27:43,523 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:27:43,524 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-11 02:27:43,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:43 BoogieIcfgContainer [2021-10-11 02:27:43,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:27:43,528 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:27:43,529 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:27:43,536 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:27:43,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:27:42" (1/3) ... [2021-10-11 02:27:43,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5132498b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:43, skipping insertion in model container [2021-10-11 02:27:43,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:43" (2/3) ... [2021-10-11 02:27:43,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5132498b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:43, skipping insertion in model container [2021-10-11 02:27:43,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:43" (3/3) ... [2021-10-11 02:27:43,549 INFO L111 eAbstractionObserver]: Analyzing ICFG memset.c [2021-10-11 02:27:43,565 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:27:43,569 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2021-10-11 02:27:43,581 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-11 02:27:43,604 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:27:43,604 INFO L378 AbstractCegarLoop]: Hoare is false [2021-10-11 02:27:43,604 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:27:43,604 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:27:43,605 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:27:43,605 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:27:43,605 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:27:43,605 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:27:43,619 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2021-10-11 02:27:43,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-11 02:27:43,626 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:43,626 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2021-10-11 02:27:43,627 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2021-10-11 02:27:43,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:43,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1553, now seen corresponding path program 1 times [2021-10-11 02:27:43,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:43,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199458789] [2021-10-11 02:27:43,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:43,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:43,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:43,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199458789] [2021-10-11 02:27:43,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:43,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:27:43,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821107281] [2021-10-11 02:27:43,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:27:43,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:43,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:27:43,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:43,818 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2021-10-11 02:27:43,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:43,849 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2021-10-11 02:27:43,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:27:43,851 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2021-10-11 02:27:43,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:43,859 INFO L225 Difference]: With dead ends: 8 [2021-10-11 02:27:43,859 INFO L226 Difference]: Without dead ends: 7 [2021-10-11 02:27:43,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:43,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-11 02:27:43,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-11 02:27:43,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-11 02:27:43,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2021-10-11 02:27:43,890 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 2 [2021-10-11 02:27:43,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:43,891 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-10-11 02:27:43,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:27:43,891 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2021-10-11 02:27:43,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-11 02:27:43,892 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:43,892 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-11 02:27:43,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:27:43,893 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2021-10-11 02:27:43,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:43,893 INFO L82 PathProgramCache]: Analyzing trace with hash 48179, now seen corresponding path program 1 times [2021-10-11 02:27:43,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:43,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199559962] [2021-10-11 02:27:43,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:43,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:43,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:43,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199559962] [2021-10-11 02:27:43,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:43,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:27:43,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260691451] [2021-10-11 02:27:43,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:27:43,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:43,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:27:43,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:43,983 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 3 states. [2021-10-11 02:27:44,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:44,017 INFO L93 Difference]: Finished difference Result 6 states and 6 transitions. [2021-10-11 02:27:44,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:27:44,018 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2021-10-11 02:27:44,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:44,019 INFO L225 Difference]: With dead ends: 6 [2021-10-11 02:27:44,030 INFO L226 Difference]: Without dead ends: 6 [2021-10-11 02:27:44,031 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:44,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2021-10-11 02:27:44,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2021-10-11 02:27:44,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-11 02:27:44,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2021-10-11 02:27:44,033 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 3 [2021-10-11 02:27:44,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:44,034 INFO L481 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2021-10-11 02:27:44,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:27:44,050 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2021-10-11 02:27:44,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:27:44,051 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:44,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:27:44,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:27:44,052 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2021-10-11 02:27:44,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:44,053 INFO L82 PathProgramCache]: Analyzing trace with hash 46301616, now seen corresponding path program 1 times [2021-10-11 02:27:44,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:44,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360657541] [2021-10-11 02:27:44,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:44,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:44,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:44,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360657541] [2021-10-11 02:27:44,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:44,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:27:44,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264776672] [2021-10-11 02:27:44,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:27:44,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:44,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:27:44,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:44,165 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 4 states. [2021-10-11 02:27:44,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:44,181 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2021-10-11 02:27:44,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:27:44,182 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2021-10-11 02:27:44,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:44,182 INFO L225 Difference]: With dead ends: 7 [2021-10-11 02:27:44,183 INFO L226 Difference]: Without dead ends: 7 [2021-10-11 02:27:44,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:44,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-11 02:27:44,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-11 02:27:44,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-11 02:27:44,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2021-10-11 02:27:44,186 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2021-10-11 02:27:44,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:44,186 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-10-11 02:27:44,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:27:44,187 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2021-10-11 02:27:44,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:27:44,187 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:44,188 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:27:44,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:27:44,188 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2021-10-11 02:27:44,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:44,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1435340626, now seen corresponding path program 1 times [2021-10-11 02:27:44,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:44,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057351376] [2021-10-11 02:27:44,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:44,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:44,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:44,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057351376] [2021-10-11 02:27:44,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637519669] [2021-10-11 02:27:44,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6280d92-fb6b-44b4-a934-6513f750841f/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:27:44,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:44,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:27:44,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:44,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:44,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:27:44,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:44,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1430997447] [2021-10-11 02:27:44,609 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-11 02:27:44,609 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:27:44,614 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:27:44,618 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:27:44,619 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:27:45,061 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:27:45,316 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:27:45,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:27:45,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2021-10-11 02:27:45,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651457899] [2021-10-11 02:27:45,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-10-11 02:27:45,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:45,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-11 02:27:45,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-10-11 02:27:45,324 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 11 states. [2021-10-11 02:27:45,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:45,381 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2021-10-11 02:27:45,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:27:45,381 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 6 [2021-10-11 02:27:45,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:45,382 INFO L225 Difference]: With dead ends: 10 [2021-10-11 02:27:45,384 INFO L226 Difference]: Without dead ends: 10 [2021-10-11 02:27:45,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2021-10-11 02:27:45,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-11 02:27:45,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-11 02:27:45,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-11 02:27:45,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-10-11 02:27:45,389 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 6 [2021-10-11 02:27:45,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:45,389 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-10-11 02:27:45,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-10-11 02:27:45,390 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-10-11 02:27:45,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:27:45,391 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:45,391 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2021-10-11 02:27:45,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-10-11 02:27:45,606 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2021-10-11 02:27:45,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:45,607 INFO L82 PathProgramCache]: Analyzing trace with hash -471213520, now seen corresponding path program 2 times [2021-10-11 02:27:45,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:45,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314673684] [2021-10-11 02:27:45,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:45,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:45,704 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:45,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314673684] [2021-10-11 02:27:45,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243147074] [2021-10-11 02:27:45,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6280d92-fb6b-44b4-a934-6513f750841f/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:27:45,743 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-11 02:27:45,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 02:27:45,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 02:27:45,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:45,821 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-11 02:27:45,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:27:45,848 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-11 02:27:45,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:27:45,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [7] total 11 [2021-10-11 02:27:45,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182828095] [2021-10-11 02:27:45,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:27:45,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:45,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:27:45,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-11 02:27:45,852 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 6 states. [2021-10-11 02:27:45,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:45,874 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2021-10-11 02:27:45,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:27:45,874 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2021-10-11 02:27:45,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:45,874 INFO L225 Difference]: With dead ends: 9 [2021-10-11 02:27:45,875 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:27:45,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-11 02:27:45,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:27:45,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:27:45,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:27:45,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:27:45,880 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2021-10-11 02:27:45,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:45,880 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:27:45,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:27:45,880 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:27:45,880 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:27:46,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-11 02:27:46,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:27:46 BoogieIcfgContainer [2021-10-11 02:27:46,105 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:27:46,106 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:27:46,106 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:27:46,106 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:27:46,106 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:43" (3/4) ... [2021-10-11 02:27:46,109 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:27:46,117 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-11 02:27:46,117 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-11 02:27:46,117 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 02:27:46,144 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6280d92-fb6b-44b4-a934-6513f750841f/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:27:46,144 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:27:46,145 INFO L168 Benchmark]: Toolchain (without parser) took 3243.82 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 61.0 MB in the beginning and 45.8 MB in the end (delta: 15.3 MB). Peak memory consumption was 33.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:46,146 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 94.4 MB. Free memory was 67.5 MB in the beginning and 67.4 MB in the end (delta: 30.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:46,146 INFO L168 Benchmark]: CACSL2BoogieTranslator took 217.85 ms. Allocated memory is still 94.4 MB. Free memory was 60.9 MB in the beginning and 72.4 MB in the end (delta: -11.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:46,147 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.79 ms. Allocated memory is still 94.4 MB. Free memory was 72.4 MB in the beginning and 71.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:46,148 INFO L168 Benchmark]: Boogie Preprocessor took 20.22 ms. Allocated memory is still 94.4 MB. Free memory was 71.2 MB in the beginning and 70.2 MB in the end (delta: 983.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:46,148 INFO L168 Benchmark]: RCFGBuilder took 349.54 ms. Allocated memory is still 94.4 MB. Free memory was 70.2 MB in the beginning and 57.7 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:46,149 INFO L168 Benchmark]: TraceAbstraction took 2576.89 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 57.3 MB in the beginning and 47.9 MB in the end (delta: 9.5 MB). Peak memory consumption was 30.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:46,150 INFO L168 Benchmark]: Witness Printer took 38.32 ms. Allocated memory is still 113.2 MB. Free memory was 47.9 MB in the beginning and 45.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:46,153 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 94.4 MB. Free memory was 67.5 MB in the beginning and 67.4 MB in the end (delta: 30.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 217.85 ms. Allocated memory is still 94.4 MB. Free memory was 60.9 MB in the beginning and 72.4 MB in the end (delta: -11.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.79 ms. Allocated memory is still 94.4 MB. Free memory was 72.4 MB in the beginning and 71.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.22 ms. Allocated memory is still 94.4 MB. Free memory was 71.2 MB in the beginning and 70.2 MB in the end (delta: 983.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 349.54 ms. Allocated memory is still 94.4 MB. Free memory was 70.2 MB in the beginning and 57.7 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2576.89 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 57.3 MB in the beginning and 47.9 MB in the end (delta: 9.5 MB). Peak memory consumption was 30.0 MB. Max. memory is 16.1 GB. * Witness Printer took 38.32 ms. Allocated memory is still 113.2 MB. Free memory was 47.9 MB in the beginning and 45.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 25]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.5s, OverallIterations: 5, TraceHistogramMax: 4, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 14 SDtfs, 16 SDslu, 8 SDs, 0 SdLazy, 39 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 40 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 46 ConstructedInterpolants, 1 QuantifiedInterpolants, 2206 SizeOfPredicates, 2 NumberOfNonLiveVariables, 85 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 20/33 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 correct! Received shutdown request...