./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_f92993fc-a813-43d2-81b4-7945df658d56/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92993fc-a813-43d2-81b4-7945df658d56/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92993fc-a813-43d2-81b4-7945df658d56/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92993fc-a813-43d2-81b4-7945df658d56/bin/uautomizer-Z5i5R5N3CC/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memset.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92993fc-a813-43d2-81b4-7945df658d56/bin/uautomizer-Z5i5R5N3CC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92993fc-a813-43d2-81b4-7945df658d56/bin/uautomizer-Z5i5R5N3CC --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 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 00:30:27,405 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:30:27,408 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:30:27,466 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:30:27,467 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:30:27,473 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:30:27,477 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:30:27,482 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:30:27,485 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:30:27,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:30:27,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:30:27,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:30:27,496 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:30:27,499 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:30:27,501 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:30:27,503 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:30:27,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:30:27,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:30:27,513 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:30:27,523 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:30:27,525 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:30:27,527 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:30:27,530 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:30:27,531 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:30:27,535 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:30:27,536 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:30:27,536 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:30:27,539 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:30:27,539 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:30:27,541 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:30:27,542 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:30:27,543 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:30:27,545 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:30:27,547 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:30:27,548 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:30:27,548 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:30:27,549 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:30:27,550 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:30:27,550 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:30:27,552 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:30:27,553 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:30:27,554 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92993fc-a813-43d2-81b4-7945df658d56/bin/uautomizer-Z5i5R5N3CC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-11 00:30:27,597 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:30:27,597 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:30:27,599 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:30:27,600 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:30:27,600 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:30:27,600 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:30:27,600 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:30:27,601 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 00:30:27,608 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:30:27,608 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:30:27,609 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:30:27,610 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-11 00:30:27,610 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-11 00:30:27,610 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-11 00:30:27,611 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:30:27,611 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 00:30:27,611 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:30:27,611 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:30:27,612 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:30:27,612 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:30:27,612 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:30:27,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:30:27,613 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:30:27,613 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:30:27,613 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:30:27,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:30:27,613 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:30:27,614 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_f92993fc-a813-43d2-81b4-7945df658d56/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92993fc-a813-43d2-81b4-7945df658d56/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 566f1414dafe692faf7ed7456be2d3e7d288640b [2021-10-11 00:30:27,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:30:27,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:30:27,949 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:30:27,951 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:30:27,952 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:30:27,953 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92993fc-a813-43d2-81b4-7945df658d56/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/ldv-memsafety/memset.c [2021-10-11 00:30:28,037 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92993fc-a813-43d2-81b4-7945df658d56/bin/uautomizer-Z5i5R5N3CC/data/6a8ba4167/5056a980a5354478bbefb6ca39033cf9/FLAG6194d9f4b [2021-10-11 00:30:28,497 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:30:28,498 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92993fc-a813-43d2-81b4-7945df658d56/sv-benchmarks/c/ldv-memsafety/memset.c [2021-10-11 00:30:28,504 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92993fc-a813-43d2-81b4-7945df658d56/bin/uautomizer-Z5i5R5N3CC/data/6a8ba4167/5056a980a5354478bbefb6ca39033cf9/FLAG6194d9f4b [2021-10-11 00:30:28,876 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92993fc-a813-43d2-81b4-7945df658d56/bin/uautomizer-Z5i5R5N3CC/data/6a8ba4167/5056a980a5354478bbefb6ca39033cf9 [2021-10-11 00:30:28,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:30:28,879 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-11 00:30:28,882 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:30:28,882 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:30:28,888 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:30:28,889 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:30:28" (1/1) ... [2021-10-11 00:30:28,892 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15591718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:28, skipping insertion in model container [2021-10-11 00:30:28,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:30:28" (1/1) ... [2021-10-11 00:30:28,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:30:28,912 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:30:29,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:30:29,103 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:30:29,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:30:29,129 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:30:29,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:29 WrapperNode [2021-10-11 00:30:29,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:30:29,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:30:29,133 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:30:29,133 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:30:29,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:29" (1/1) ... [2021-10-11 00:30:29,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:29" (1/1) ... [2021-10-11 00:30:29,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:29" (1/1) ... [2021-10-11 00:30:29,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:29" (1/1) ... [2021-10-11 00:30:29,157 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:29" (1/1) ... [2021-10-11 00:30:29,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:29" (1/1) ... [2021-10-11 00:30:29,161 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:29" (1/1) ... [2021-10-11 00:30:29,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:30:29,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:30:29,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:30:29,164 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:30:29,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:29" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92993fc-a813-43d2-81b4-7945df658d56/bin/uautomizer-Z5i5R5N3CC/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 00:30:29,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-11 00:30:29,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:30:29,235 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-11 00:30:29,235 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-10-11 00:30:29,235 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-10-11 00:30:29,235 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-11 00:30:29,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:30:29,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-10-11 00:30:29,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 00:30:29,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-11 00:30:29,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:30:29,343 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-11 00:30:29,396 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:30:29,397 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-10-11 00:30:29,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:30:29 BoogieIcfgContainer [2021-10-11 00:30:29,399 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:30:29,400 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:30:29,401 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:30:29,418 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:30:29,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:30:28" (1/3) ... [2021-10-11 00:30:29,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a1e6bb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:30:29, skipping insertion in model container [2021-10-11 00:30:29,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:29" (2/3) ... [2021-10-11 00:30:29,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a1e6bb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:30:29, skipping insertion in model container [2021-10-11 00:30:29,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:30:29" (3/3) ... [2021-10-11 00:30:29,421 INFO L111 eAbstractionObserver]: Analyzing ICFG memset.c [2021-10-11 00:30:29,451 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:30:29,455 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2021-10-11 00:30:29,478 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-11 00:30:29,500 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:30:29,500 INFO L378 AbstractCegarLoop]: Hoare is false [2021-10-11 00:30:29,500 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:30:29,501 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:30:29,501 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:30:29,501 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:30:29,501 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:30:29,501 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:30:29,516 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2021-10-11 00:30:29,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 00:30:29,524 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:30:29,525 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:30:29,526 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2021-10-11 00:30:29,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:30:29,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1092847368, now seen corresponding path program 1 times [2021-10-11 00:30:29,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:30:29,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111529986] [2021-10-11 00:30:29,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:30:29,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:29,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:30:29,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:29,735 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 00:30:29,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111529986] [2021-10-11 00:30:29,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:30:29,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:30:29,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191074809] [2021-10-11 00:30:29,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:30:29,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:30:29,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:30:29,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:30:29,759 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 4 states. [2021-10-11 00:30:29,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:30:29,843 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-10-11 00:30:29,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:30:29,845 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-10-11 00:30:29,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:30:29,853 INFO L225 Difference]: With dead ends: 19 [2021-10-11 00:30:29,854 INFO L226 Difference]: Without dead ends: 16 [2021-10-11 00:30:29,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:30:29,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-11 00:30:29,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-11 00:30:29,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-11 00:30:29,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-10-11 00:30:29,888 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2021-10-11 00:30:29,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:30:29,888 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-10-11 00:30:29,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:30:29,889 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-10-11 00:30:29,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 00:30:29,889 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:30:29,889 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:30:29,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:30:29,890 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2021-10-11 00:30:29,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:30:29,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1092847367, now seen corresponding path program 1 times [2021-10-11 00:30:29,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:30:29,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271232696] [2021-10-11 00:30:29,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:30:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:29,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:30:29,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:29,976 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 00:30:29,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271232696] [2021-10-11 00:30:29,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:30:29,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:30:29,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215125969] [2021-10-11 00:30:29,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:30:29,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:30:29,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:30:29,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:30:29,983 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 4 states. [2021-10-11 00:30:30,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:30:30,032 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-10-11 00:30:30,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:30:30,033 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-10-11 00:30:30,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:30:30,034 INFO L225 Difference]: With dead ends: 15 [2021-10-11 00:30:30,035 INFO L226 Difference]: Without dead ends: 15 [2021-10-11 00:30:30,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:30:30,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-11 00:30:30,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-11 00:30:30,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-11 00:30:30,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-10-11 00:30:30,040 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 7 [2021-10-11 00:30:30,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:30:30,041 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-10-11 00:30:30,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:30:30,041 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-10-11 00:30:30,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 00:30:30,042 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:30:30,042 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:30:30,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:30:30,043 INFO L429 AbstractCegarLoop]: === Iteration 3 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2021-10-11 00:30:30,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:30:30,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1462327129, now seen corresponding path program 1 times [2021-10-11 00:30:30,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:30:30,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356338196] [2021-10-11 00:30:30,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:30:30,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:30,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:30:30,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:30,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-11 00:30:30,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:30,128 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 00:30:30,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356338196] [2021-10-11 00:30:30,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:30:30,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 00:30:30,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928752695] [2021-10-11 00:30:30,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:30:30,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:30:30,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:30:30,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:30:30,132 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 5 states. [2021-10-11 00:30:30,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:30:30,204 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-10-11 00:30:30,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:30:30,205 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2021-10-11 00:30:30,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:30:30,206 INFO L225 Difference]: With dead ends: 18 [2021-10-11 00:30:30,206 INFO L226 Difference]: Without dead ends: 16 [2021-10-11 00:30:30,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:30:30,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-11 00:30:30,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-11 00:30:30,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-11 00:30:30,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-10-11 00:30:30,212 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2021-10-11 00:30:30,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:30:30,213 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-10-11 00:30:30,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:30:30,213 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-10-11 00:30:30,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 00:30:30,214 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:30:30,214 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:30:30,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 00:30:30,215 INFO L429 AbstractCegarLoop]: === Iteration 4 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2021-10-11 00:30:30,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:30:30,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1971150090, now seen corresponding path program 1 times [2021-10-11 00:30:30,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:30:30,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190734871] [2021-10-11 00:30:30,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:30:30,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:30,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:30:30,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:30,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-11 00:30:30,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:30,301 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 00:30:30,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190734871] [2021-10-11 00:30:30,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110487819] [2021-10-11 00:30:30,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92993fc-a813-43d2-81b4-7945df658d56/bin/uautomizer-Z5i5R5N3CC/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 00:30:30,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:30,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 00:30:30,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:30:30,449 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 00:30:30,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:30:30,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 6 [2021-10-11 00:30:30,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070044012] [2021-10-11 00:30:30,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 00:30:30,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:30:30,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:30:30,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:30:30,452 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 6 states. [2021-10-11 00:30:30,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:30:30,537 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-10-11 00:30:30,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 00:30:30,538 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2021-10-11 00:30:30,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:30:30,538 INFO L225 Difference]: With dead ends: 19 [2021-10-11 00:30:30,538 INFO L226 Difference]: Without dead ends: 17 [2021-10-11 00:30:30,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-11 00:30:30,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-11 00:30:30,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-11 00:30:30,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-11 00:30:30,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-10-11 00:30:30,542 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2021-10-11 00:30:30,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:30:30,543 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-10-11 00:30:30,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 00:30:30,543 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-10-11 00:30:30,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 00:30:30,544 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:30:30,544 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:30:30,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:30:30,771 INFO L429 AbstractCegarLoop]: === Iteration 5 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2021-10-11 00:30:30,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:30:30,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1034761479, now seen corresponding path program 2 times [2021-10-11 00:30:30,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:30:30,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139599686] [2021-10-11 00:30:30,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:30:30,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:30,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:30:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:30,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-11 00:30:30,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:30,894 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:30:30,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139599686] [2021-10-11 00:30:30,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189003666] [2021-10-11 00:30:30,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92993fc-a813-43d2-81b4-7945df658d56/bin/uautomizer-Z5i5R5N3CC/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 00:30:30,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-11 00:30:30,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:30:30,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-11 00:30:30,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:30:31,005 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-10-11 00:30:31,008 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 00:30:31,022 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 00:30:31,025 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-10-11 00:30:31,025 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2021-10-11 00:30:31,166 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 00:30:31,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-11 00:30:31,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2021-10-11 00:30:31,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511287227] [2021-10-11 00:30:31,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 00:30:31,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:30:31,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:30:31,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-11 00:30:31,171 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 6 states. [2021-10-11 00:30:31,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:30:31,228 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-10-11 00:30:31,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 00:30:31,229 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2021-10-11 00:30:31,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:30:31,230 INFO L225 Difference]: With dead ends: 16 [2021-10-11 00:30:31,230 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 00:30:31,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-11 00:30:31,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 00:30:31,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 00:30:31,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 00:30:31,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 00:30:31,236 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-10-11 00:30:31,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:30:31,236 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:30:31,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 00:30:31,237 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 00:30:31,237 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 00:30:31,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:30:31,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:30:31 BoogieIcfgContainer [2021-10-11 00:30:31,455 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:30:31,455 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:30:31,455 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:30:31,455 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:30:31,456 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:30:29" (3/4) ... [2021-10-11 00:30:31,458 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 00:30:31,463 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-10-11 00:30:31,464 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure #Ultimate.C_memset [2021-10-11 00:30:31,464 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-10-11 00:30:31,468 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-10-11 00:30:31,468 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-11 00:30:31,468 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 00:30:31,468 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 00:30:31,499 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f92993fc-a813-43d2-81b4-7945df658d56/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:30:31,499 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:30:31,501 INFO L168 Benchmark]: Toolchain (without parser) took 2620.74 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 65.1 MB in the beginning and 84.3 MB in the end (delta: -19.1 MB). Peak memory consumption was 1.9 kB. Max. memory is 16.1 GB. [2021-10-11 00:30:31,501 INFO L168 Benchmark]: CDTParser took 0.71 ms. Allocated memory is still 104.9 MB. Free memory is still 81.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:30:31,502 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.73 ms. Allocated memory is still 104.9 MB. Free memory was 64.9 MB in the beginning and 81.6 MB in the end (delta: -16.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 00:30:31,515 INFO L168 Benchmark]: Boogie Preprocessor took 30.75 ms. Allocated memory is still 104.9 MB. Free memory was 81.6 MB in the beginning and 80.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:30:31,516 INFO L168 Benchmark]: RCFGBuilder took 234.71 ms. Allocated memory is still 104.9 MB. Free memory was 80.1 MB in the beginning and 68.7 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 00:30:31,517 INFO L168 Benchmark]: TraceAbstraction took 2054.34 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 68.3 MB in the beginning and 86.3 MB in the end (delta: -18.0 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. [2021-10-11 00:30:31,517 INFO L168 Benchmark]: Witness Printer took 44.27 ms. Allocated memory is still 125.8 MB. Free memory was 86.3 MB in the beginning and 84.3 MB in the end (delta: 2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:30:31,521 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.71 ms. Allocated memory is still 104.9 MB. Free memory is still 81.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 249.73 ms. Allocated memory is still 104.9 MB. Free memory was 64.9 MB in the beginning and 81.6 MB in the end (delta: -16.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.75 ms. Allocated memory is still 104.9 MB. Free memory was 81.6 MB in the beginning and 80.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 234.71 ms. Allocated memory is still 104.9 MB. Free memory was 80.1 MB in the beginning and 68.7 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2054.34 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 68.3 MB in the beginning and 86.3 MB in the end (delta: -18.0 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. * Witness Printer took 44.27 ms. Allocated memory is still 125.8 MB. Free memory was 86.3 MB in the beginning and 84.3 MB in the end (delta: 2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 27]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 27]: 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 4 procedures, 20 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.9s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 53 SDtfs, 34 SDslu, 65 SDs, 0 SdLazy, 123 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 90 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 83 ConstructedInterpolants, 8 QuantifiedInterpolants, 3158 SizeOfPredicates, 1 NumberOfNonLiveVariables, 129 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 3/8 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...