./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/alias_of_return.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5c11f9-5de3-4f93-98b2-4ae808663e46/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5c11f9-5de3-4f93-98b2-4ae808663e46/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5c11f9-5de3-4f93-98b2-4ae808663e46/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5c11f9-5de3-4f93-98b2-4ae808663e46/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/alias_of_return.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5c11f9-5de3-4f93-98b2-4ae808663e46/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5c11f9-5de3-4f93-98b2-4ae808663e46/bin/uautomizer-QkZJyEgLgS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ba0bcfe856788bd0caa6dc699e0af14f5977926f33f52c273bc3aa3b61532a90 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 03:52:45,307 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 03:52:45,310 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 03:52:45,361 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 03:52:45,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 03:52:45,363 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 03:52:45,365 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 03:52:45,367 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 03:52:45,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 03:52:45,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 03:52:45,383 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 03:52:45,386 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 03:52:45,387 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 03:52:45,390 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 03:52:45,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 03:52:45,397 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 03:52:45,399 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 03:52:45,400 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 03:52:45,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 03:52:45,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 03:52:45,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 03:52:45,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 03:52:45,415 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 03:52:45,416 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 03:52:45,428 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 03:52:45,428 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 03:52:45,428 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 03:52:45,431 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 03:52:45,431 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 03:52:45,432 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 03:52:45,433 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 03:52:45,434 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 03:52:45,436 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 03:52:45,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 03:52:45,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 03:52:45,439 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 03:52:45,440 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 03:52:45,440 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 03:52:45,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 03:52:45,442 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 03:52:45,443 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 03:52:45,444 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5c11f9-5de3-4f93-98b2-4ae808663e46/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 03:52:45,491 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 03:52:45,491 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 03:52:45,492 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 03:52:45,492 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 03:52:45,493 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 03:52:45,494 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 03:52:45,495 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 03:52:45,495 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 03:52:45,495 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 03:52:45,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 03:52:45,496 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 03:52:45,497 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 03:52:45,497 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 03:52:45,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 03:52:45,497 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 03:52:45,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 03:52:45,498 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 03:52:45,498 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 03:52:45,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 03:52:45,498 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 03:52:45,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 03:52:45,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 03:52:45,499 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 03:52:45,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 03:52:45,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:52:45,500 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 03:52:45,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 03:52:45,500 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 03:52:45,501 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 03:52:45,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 03:52:45,501 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 03:52:45,501 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 03:52:45,502 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 03:52:45,502 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 03:52:45,502 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_3d5c11f9-5de3-4f93-98b2-4ae808663e46/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5c11f9-5de3-4f93-98b2-4ae808663e46/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ba0bcfe856788bd0caa6dc699e0af14f5977926f33f52c273bc3aa3b61532a90 [2022-11-23 03:52:45,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 03:52:45,837 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 03:52:45,841 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 03:52:45,842 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 03:52:45,843 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 03:52:45,845 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5c11f9-5de3-4f93-98b2-4ae808663e46/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/ldv-regression/alias_of_return.i [2022-11-23 03:52:49,645 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 03:52:49,885 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 03:52:49,886 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5c11f9-5de3-4f93-98b2-4ae808663e46/sv-benchmarks/c/ldv-regression/alias_of_return.i [2022-11-23 03:52:49,892 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5c11f9-5de3-4f93-98b2-4ae808663e46/bin/uautomizer-QkZJyEgLgS/data/7ce2d6585/5c1c8f9fd6dd4288a69e5b9028383549/FLAG91ab82d4d [2022-11-23 03:52:49,919 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5c11f9-5de3-4f93-98b2-4ae808663e46/bin/uautomizer-QkZJyEgLgS/data/7ce2d6585/5c1c8f9fd6dd4288a69e5b9028383549 [2022-11-23 03:52:49,923 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 03:52:49,925 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 03:52:49,931 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 03:52:49,931 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 03:52:49,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 03:52:49,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:52:49" (1/1) ... [2022-11-23 03:52:49,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70f0c26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:49, skipping insertion in model container [2022-11-23 03:52:49,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:52:49" (1/1) ... [2022-11-23 03:52:49,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 03:52:49,974 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 03:52:50,139 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5c11f9-5de3-4f93-98b2-4ae808663e46/sv-benchmarks/c/ldv-regression/alias_of_return.i[288,301] [2022-11-23 03:52:50,161 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:52:50,175 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 03:52:50,190 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5c11f9-5de3-4f93-98b2-4ae808663e46/sv-benchmarks/c/ldv-regression/alias_of_return.i[288,301] [2022-11-23 03:52:50,198 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:52:50,216 INFO L208 MainTranslator]: Completed translation [2022-11-23 03:52:50,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:50 WrapperNode [2022-11-23 03:52:50,217 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 03:52:50,218 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 03:52:50,218 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 03:52:50,219 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 03:52:50,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:50" (1/1) ... [2022-11-23 03:52:50,237 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:50" (1/1) ... [2022-11-23 03:52:50,256 INFO L138 Inliner]: procedures = 14, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 30 [2022-11-23 03:52:50,257 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 03:52:50,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 03:52:50,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 03:52:50,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 03:52:50,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:50" (1/1) ... [2022-11-23 03:52:50,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:50" (1/1) ... [2022-11-23 03:52:50,270 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:50" (1/1) ... [2022-11-23 03:52:50,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:50" (1/1) ... [2022-11-23 03:52:50,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:50" (1/1) ... [2022-11-23 03:52:50,281 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:50" (1/1) ... [2022-11-23 03:52:50,290 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:50" (1/1) ... [2022-11-23 03:52:50,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:50" (1/1) ... [2022-11-23 03:52:50,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 03:52:50,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 03:52:50,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 03:52:50,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 03:52:50,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:50" (1/1) ... [2022-11-23 03:52:50,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:52:50,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5c11f9-5de3-4f93-98b2-4ae808663e46/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:52:50,335 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5c11f9-5de3-4f93-98b2-4ae808663e46/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 03:52:50,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5c11f9-5de3-4f93-98b2-4ae808663e46/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 03:52:50,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 03:52:50,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 03:52:50,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 03:52:50,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 03:52:50,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 03:52:50,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 03:52:50,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 03:52:50,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 03:52:50,492 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 03:52:50,495 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 03:52:50,688 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 03:52:50,696 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 03:52:50,696 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 03:52:50,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:52:50 BoogieIcfgContainer [2022-11-23 03:52:50,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 03:52:50,703 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 03:52:50,703 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 03:52:50,707 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 03:52:50,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:52:49" (1/3) ... [2022-11-23 03:52:50,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44383a2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:52:50, skipping insertion in model container [2022-11-23 03:52:50,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:50" (2/3) ... [2022-11-23 03:52:50,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44383a2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:52:50, skipping insertion in model container [2022-11-23 03:52:50,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:52:50" (3/3) ... [2022-11-23 03:52:50,712 INFO L112 eAbstractionObserver]: Analyzing ICFG alias_of_return.i [2022-11-23 03:52:50,741 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 03:52:50,742 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 03:52:50,824 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:52:50,835 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@71ee7bde, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:52:50,836 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 03:52:50,845 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:52:50,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 03:52:50,857 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:52:50,858 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 03:52:50,859 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:52:50,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:52:50,872 INFO L85 PathProgramCache]: Analyzing trace with hash 28692803, now seen corresponding path program 1 times [2022-11-23 03:52:50,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:52:50,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262060048] [2022-11-23 03:52:50,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:52:50,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:52:51,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:52:51,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:52:51,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:52:51,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262060048] [2022-11-23 03:52:51,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262060048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:52:51,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:52:51,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:52:51,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604162516] [2022-11-23 03:52:51,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:52:51,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:52:51,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:52:51,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:52:51,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:52:51,486 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:52:51,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:52:51,576 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2022-11-23 03:52:51,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 03:52:51,580 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-23 03:52:51,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:52:51,599 INFO L225 Difference]: With dead ends: 15 [2022-11-23 03:52:51,599 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 03:52:51,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:52:51,619 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:52:51,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 10 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:52:51,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 03:52:51,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 03:52:51,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:52:51,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 03:52:51,712 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2022-11-23 03:52:51,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:52:51,714 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 03:52:51,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:52:51,715 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 03:52:51,716 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 03:52:51,719 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 03:52:51,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 03:52:51,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-23 03:52:51,767 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-23 03:52:51,768 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-23 03:52:51,768 INFO L899 garLoopResultBuilder]: For program point L31(line 31) no Hoare annotation was computed. [2022-11-23 03:52:51,768 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-23 03:52:51,768 INFO L899 garLoopResultBuilder]: For program point L31-2(line 31) no Hoare annotation was computed. [2022-11-23 03:52:51,769 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-23 03:52:51,769 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2022-11-23 03:52:51,769 INFO L899 garLoopResultBuilder]: For program point L18(lines 18 32) no Hoare annotation was computed. [2022-11-23 03:52:51,770 INFO L895 garLoopResultBuilder]: At program point L15(lines 13 16) the Hoare annotation is: (and (= |ULTIMATE.start_return_self_#res#1.base| |ULTIMATE.start_main_~#a~0#1.base|) (= |ULTIMATE.start_return_self_#res#1.offset| |ULTIMATE.start_main_~#a~0#1.offset|)) [2022-11-23 03:52:51,770 INFO L899 garLoopResultBuilder]: For program point L10(line 10) no Hoare annotation was computed. [2022-11-23 03:52:51,770 INFO L899 garLoopResultBuilder]: For program point L9(lines 9 10) no Hoare annotation was computed. [2022-11-23 03:52:51,775 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-23 03:52:51,779 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 03:52:51,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:52:51 BoogieIcfgContainer [2022-11-23 03:52:51,807 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 03:52:51,808 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 03:52:51,808 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 03:52:51,809 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 03:52:51,810 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:52:50" (3/4) ... [2022-11-23 03:52:51,816 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 03:52:51,831 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-11-23 03:52:51,832 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-23 03:52:51,833 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-23 03:52:51,833 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 03:52:51,870 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \result == a && \result == a [2022-11-23 03:52:51,883 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5c11f9-5de3-4f93-98b2-4ae808663e46/bin/uautomizer-QkZJyEgLgS/witness.graphml [2022-11-23 03:52:51,883 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 03:52:51,884 INFO L158 Benchmark]: Toolchain (without parser) took 1958.64ms. Allocated memory is still 140.5MB. Free memory was 80.0MB in the beginning and 107.8MB in the end (delta: -27.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 03:52:51,884 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 109.1MB. Free memory is still 62.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 03:52:51,891 INFO L158 Benchmark]: CACSL2BoogieTranslator took 286.59ms. Allocated memory is still 140.5MB. Free memory was 80.0MB in the beginning and 70.2MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 03:52:51,892 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.95ms. Allocated memory is still 140.5MB. Free memory was 70.2MB in the beginning and 68.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 03:52:51,892 INFO L158 Benchmark]: Boogie Preprocessor took 36.16ms. Allocated memory is still 140.5MB. Free memory was 68.9MB in the beginning and 67.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 03:52:51,897 INFO L158 Benchmark]: RCFGBuilder took 405.01ms. Allocated memory is still 140.5MB. Free memory was 67.7MB in the beginning and 57.7MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 03:52:51,897 INFO L158 Benchmark]: TraceAbstraction took 1104.09ms. Allocated memory is still 140.5MB. Free memory was 56.9MB in the beginning and 110.3MB in the end (delta: -53.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 03:52:51,898 INFO L158 Benchmark]: Witness Printer took 74.97ms. Allocated memory is still 140.5MB. Free memory was 110.3MB in the beginning and 107.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 03:52:51,906 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45ms. Allocated memory is still 109.1MB. Free memory is still 62.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 286.59ms. Allocated memory is still 140.5MB. Free memory was 80.0MB in the beginning and 70.2MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.95ms. Allocated memory is still 140.5MB. Free memory was 70.2MB in the beginning and 68.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.16ms. Allocated memory is still 140.5MB. Free memory was 68.9MB in the beginning and 67.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 405.01ms. Allocated memory is still 140.5MB. Free memory was 67.7MB in the beginning and 57.7MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1104.09ms. Allocated memory is still 140.5MB. Free memory was 56.9MB in the beginning and 110.3MB in the end (delta: -53.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 74.97ms. Allocated memory is still 140.5MB. Free memory was 110.3MB in the beginning and 107.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 10]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7 IncrementalHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 4 mSDtfsCounter, 7 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 1 NumberOfFragments, 7 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: \result == a && \result == a RESULT: Ultimate proved your program to be correct! [2022-11-23 03:52:51,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5c11f9-5de3-4f93-98b2-4ae808663e46/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE