./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/afterrec_2calls-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af76dbbb-b556-4637-afbd-0602be77f169/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af76dbbb-b556-4637-afbd-0602be77f169/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af76dbbb-b556-4637-afbd-0602be77f169/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af76dbbb-b556-4637-afbd-0602be77f169/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/afterrec_2calls-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af76dbbb-b556-4637-afbd-0602be77f169/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af76dbbb-b556-4637-afbd-0602be77f169/bin/uautomizer-j4sWxH34Be --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 b329d37fd8bf911c1223006468d56bb06a44739627ad380de3f708faf818709f .......................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:45:51,772 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:45:51,775 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:45:51,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:45:51,829 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:45:51,832 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:45:51,834 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:45:51,838 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:45:51,841 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:45:51,848 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:45:51,849 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:45:51,851 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:45:51,851 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:45:51,854 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:45:51,856 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:45:51,861 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:45:51,864 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:45:51,864 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:45:51,866 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:45:51,868 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:45:51,870 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:45:51,871 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:45:51,872 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:45:51,873 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:45:51,877 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:45:51,877 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:45:51,877 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:45:51,878 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:45:51,879 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:45:51,880 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:45:51,880 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:45:51,881 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:45:51,882 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:45:51,883 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:45:51,884 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:45:51,885 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:45:51,885 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:45:51,886 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:45:51,886 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:45:51,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:45:51,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:45:51,889 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af76dbbb-b556-4637-afbd-0602be77f169/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:45:51,919 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:45:51,919 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:45:51,919 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:45:51,920 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:45:51,921 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:45:51,921 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:45:51,921 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:45:51,921 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:45:51,921 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:45:51,922 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:45:51,922 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:45:51,922 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:45:51,922 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:45:51,922 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:45:51,923 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:45:51,923 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:45:51,923 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:45:51,923 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:45:51,923 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:45:51,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:45:51,924 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:45:51,924 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:45:51,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:45:51,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:45:51,925 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:45:51,925 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:45:51,925 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:45:51,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:45:51,925 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:45:51,926 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:45:51,926 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:45:51,934 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:45:51,934 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_af76dbbb-b556-4637-afbd-0602be77f169/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af76dbbb-b556-4637-afbd-0602be77f169/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b329d37fd8bf911c1223006468d56bb06a44739627ad380de3f708faf818709f [2021-10-21 19:45:52,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:45:52,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:45:52,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:45:52,237 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:45:52,237 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:45:52,238 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af76dbbb-b556-4637-afbd-0602be77f169/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/recursive-simple/afterrec_2calls-2.c [2021-10-21 19:45:52,325 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af76dbbb-b556-4637-afbd-0602be77f169/bin/uautomizer-j4sWxH34Be/data/7d083d13d/fa1668afd43842e080d6270b41ba8b15/FLAGd87f55700 [2021-10-21 19:45:52,745 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:45:52,745 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af76dbbb-b556-4637-afbd-0602be77f169/sv-benchmarks/c/recursive-simple/afterrec_2calls-2.c [2021-10-21 19:45:52,751 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af76dbbb-b556-4637-afbd-0602be77f169/bin/uautomizer-j4sWxH34Be/data/7d083d13d/fa1668afd43842e080d6270b41ba8b15/FLAGd87f55700 [2021-10-21 19:45:53,125 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af76dbbb-b556-4637-afbd-0602be77f169/bin/uautomizer-j4sWxH34Be/data/7d083d13d/fa1668afd43842e080d6270b41ba8b15 [2021-10-21 19:45:53,127 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:45:53,128 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:45:53,132 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:45:53,132 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:45:53,136 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:45:53,138 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:45:53" (1/1) ... [2021-10-21 19:45:53,139 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18fe5f35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:45:53, skipping insertion in model container [2021-10-21 19:45:53,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:45:53" (1/1) ... [2021-10-21 19:45:53,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:45:53,162 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:45:53,312 WARN L228 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_af76dbbb-b556-4637-afbd-0602be77f169/sv-benchmarks/c/recursive-simple/afterrec_2calls-2.c[354,367] [2021-10-21 19:45:53,316 WARN L228 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_af76dbbb-b556-4637-afbd-0602be77f169/sv-benchmarks/c/recursive-simple/afterrec_2calls-2.c[442,455] [2021-10-21 19:45:53,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:45:53,325 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:45:53,334 WARN L228 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_af76dbbb-b556-4637-afbd-0602be77f169/sv-benchmarks/c/recursive-simple/afterrec_2calls-2.c[354,367] [2021-10-21 19:45:53,335 WARN L228 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_af76dbbb-b556-4637-afbd-0602be77f169/sv-benchmarks/c/recursive-simple/afterrec_2calls-2.c[442,455] [2021-10-21 19:45:53,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:45:53,349 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:45:53,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:45:53 WrapperNode [2021-10-21 19:45:53,349 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:45:53,351 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:45:53,351 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:45:53,351 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:45:53,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:45:53" (1/1) ... [2021-10-21 19:45:53,381 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:45:53" (1/1) ... [2021-10-21 19:45:53,397 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:45:53,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:45:53,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:45:53,400 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:45:53,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:45:53" (1/1) ... [2021-10-21 19:45:53,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:45:53" (1/1) ... [2021-10-21 19:45:53,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:45:53" (1/1) ... [2021-10-21 19:45:53,410 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:45:53" (1/1) ... [2021-10-21 19:45:53,416 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:45:53" (1/1) ... [2021-10-21 19:45:53,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:45:53" (1/1) ... [2021-10-21 19:45:53,427 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:45:53" (1/1) ... [2021-10-21 19:45:53,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:45:53,430 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:45:53,430 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:45:53,431 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:45:53,432 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:45:53" (1/1) ... [2021-10-21 19:45:53,440 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:45:53,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af76dbbb-b556-4637-afbd-0602be77f169/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:45:53,469 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af76dbbb-b556-4637-afbd-0602be77f169/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:45:53,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af76dbbb-b556-4637-afbd-0602be77f169/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:45:53,519 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-10-21 19:45:53,520 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-10-21 19:45:53,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:45:53,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:45:53,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:45:53,520 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2021-10-21 19:45:53,520 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2021-10-21 19:45:53,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:45:53,709 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:45:53,710 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-21 19:45:53,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:45:53 BoogieIcfgContainer [2021-10-21 19:45:53,712 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:45:53,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:45:53,714 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:45:53,717 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:45:53,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:45:53" (1/3) ... [2021-10-21 19:45:53,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cc4b945 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:45:53, skipping insertion in model container [2021-10-21 19:45:53,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:45:53" (2/3) ... [2021-10-21 19:45:53,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cc4b945 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:45:53, skipping insertion in model container [2021-10-21 19:45:53,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:45:53" (3/3) ... [2021-10-21 19:45:53,721 INFO L111 eAbstractionObserver]: Analyzing ICFG afterrec_2calls-2.c [2021-10-21 19:45:53,726 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:45:53,727 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-21 19:45:53,776 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:45:53,783 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 19:45:53,783 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-21 19:45:53,807 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 14 states have internal predecessors, (16), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-21 19:45:53,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 19:45:53,815 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:45:53,816 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:45:53,817 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting fErr0ASSERT_VIOLATIONERROR_FUNCTION === [fErr0ASSERT_VIOLATIONERROR_FUNCTION, f2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:45:53,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:45:53,824 INFO L82 PathProgramCache]: Analyzing trace with hash 444027717, now seen corresponding path program 1 times [2021-10-21 19:45:53,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:45:53,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285200291] [2021-10-21 19:45:53,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:45:53,835 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:45:53,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:53,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-21 19:45:53,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:54,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:45:54,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:45:54,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285200291] [2021-10-21 19:45:54,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285200291] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:45:54,006 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:45:54,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:45:54,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545998529] [2021-10-21 19:45:54,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:45:54,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:45:54,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:45:54,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:45:54,028 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 14 states have internal predecessors, (16), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:45:54,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:45:54,075 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2021-10-21 19:45:54,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:45:54,089 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-21 19:45:54,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:45:54,095 INFO L225 Difference]: With dead ends: 27 [2021-10-21 19:45:54,095 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 19:45:54,098 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:45:54,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 19:45:54,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 19:45:54,150 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) [2021-10-21 19:45:54,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 19:45:54,154 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-10-21 19:45:54,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:45:54,155 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:45:54,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:45:54,155 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 19:45:54,156 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 19:45:54,162 INFO L764 garLoopResultBuilder]: Registering result SAFE for location fErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:45:54,162 INFO L764 garLoopResultBuilder]: Registering result SAFE for location f2Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:45:54,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:45:54,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 19:45:54,172 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:45:54,189 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:45:54,191 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:45:54,192 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:45:54,192 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:45:54,193 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:45:54,194 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:45:54,206 INFO L857 garLoopResultBuilder]: For program point fErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-10-21 19:45:54,206 INFO L853 garLoopResultBuilder]: At program point L11(line 11) the Hoare annotation is: (not (= |f_#in~n| 2)) [2021-10-21 19:45:54,214 INFO L857 garLoopResultBuilder]: For program point L11-1(lines 8 13) no Hoare annotation was computed. [2021-10-21 19:45:54,214 INFO L857 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2021-10-21 19:45:54,215 INFO L857 garLoopResultBuilder]: For program point fEXIT(lines 8 13) no Hoare annotation was computed. [2021-10-21 19:45:54,215 INFO L860 garLoopResultBuilder]: At program point fENTRY(lines 8 13) the Hoare annotation is: true [2021-10-21 19:45:54,215 INFO L857 garLoopResultBuilder]: For program point fFINAL(lines 8 13) no Hoare annotation was computed. [2021-10-21 19:45:54,216 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-21 19:45:54,216 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-21 19:45:54,216 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-21 19:45:54,216 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-21 19:45:54,217 INFO L860 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: true [2021-10-21 19:45:54,217 INFO L857 garLoopResultBuilder]: For program point L23-1(lines 22 24) no Hoare annotation was computed. [2021-10-21 19:45:54,217 INFO L857 garLoopResultBuilder]: For program point L18-1(lines 15 20) no Hoare annotation was computed. [2021-10-21 19:45:54,217 INFO L857 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2021-10-21 19:45:54,217 INFO L857 garLoopResultBuilder]: For program point f2EXIT(lines 15 20) no Hoare annotation was computed. [2021-10-21 19:45:54,218 INFO L860 garLoopResultBuilder]: At program point f2ENTRY(lines 15 20) the Hoare annotation is: true [2021-10-21 19:45:54,218 INFO L857 garLoopResultBuilder]: For program point f2FINAL(lines 15 20) no Hoare annotation was computed. [2021-10-21 19:45:54,218 INFO L857 garLoopResultBuilder]: For program point f2Err0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-21 19:45:54,219 INFO L860 garLoopResultBuilder]: At program point L18(line 18) the Hoare annotation is: true [2021-10-21 19:45:54,223 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:45:54,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:45:54 BoogieIcfgContainer [2021-10-21 19:45:54,234 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:45:54,235 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:45:54,235 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:45:54,235 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:45:54,236 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:45:53" (3/4) ... [2021-10-21 19:45:54,239 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 19:45:54,245 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2021-10-21 19:45:54,246 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f2 [2021-10-21 19:45:54,254 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-21 19:45:54,254 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-21 19:45:54,255 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:45:54,255 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:45:54,283 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af76dbbb-b556-4637-afbd-0602be77f169/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:45:54,284 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:45:54,286 INFO L168 Benchmark]: Toolchain (without parser) took 1156.13 ms. Allocated memory is still 134.2 MB. Free memory was 92.4 MB in the beginning and 71.0 MB in the end (delta: 21.3 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:45:54,286 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 134.2 MB. Free memory is still 109.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:45:54,287 INFO L168 Benchmark]: CACSL2BoogieTranslator took 217.85 ms. Allocated memory is still 134.2 MB. Free memory was 92.1 MB in the beginning and 107.7 MB in the end (delta: -15.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:45:54,287 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.06 ms. Allocated memory is still 134.2 MB. Free memory was 107.7 MB in the beginning and 106.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:45:54,288 INFO L168 Benchmark]: Boogie Preprocessor took 29.76 ms. Allocated memory is still 134.2 MB. Free memory was 106.2 MB in the beginning and 105.7 MB in the end (delta: 504.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:45:54,289 INFO L168 Benchmark]: RCFGBuilder took 282.51 ms. Allocated memory is still 134.2 MB. Free memory was 105.5 MB in the beginning and 96.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:45:54,289 INFO L168 Benchmark]: TraceAbstraction took 520.29 ms. Allocated memory is still 134.2 MB. Free memory was 95.7 MB in the beginning and 73.6 MB in the end (delta: 22.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:45:54,290 INFO L168 Benchmark]: Witness Printer took 49.06 ms. Allocated memory is still 134.2 MB. Free memory was 73.6 MB in the beginning and 71.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:45:54,294 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 134.2 MB. Free memory is still 109.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 217.85 ms. Allocated memory is still 134.2 MB. Free memory was 92.1 MB in the beginning and 107.7 MB in the end (delta: -15.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.06 ms. Allocated memory is still 134.2 MB. Free memory was 107.7 MB in the beginning and 106.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.76 ms. Allocated memory is still 134.2 MB. Free memory was 106.2 MB in the beginning and 105.7 MB in the end (delta: 504.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 282.51 ms. Allocated memory is still 134.2 MB. Free memory was 105.5 MB in the beginning and 96.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 520.29 ms. Allocated memory is still 134.2 MB. Free memory was 95.7 MB in the beginning and 73.6 MB in the end (delta: 22.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Witness Printer took 49.06 ms. Allocated memory is still 134.2 MB. Free memory was 73.6 MB in the beginning and 71.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: 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 3 procedures, 20 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 449.7ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 23.8ms, AutomataDifference: 84.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 38.8ms, InitialAbstractionConstructionTime: 11.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 6 SDtfs, 5 SDslu, 9 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 27.1ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 5 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 8 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 24.0ms HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 5.7ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 6.3ms SsaConstructionTime, 29.4ms SatisfiabilityAnalysisTime, 84.3ms InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 14 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-21 19:45:54,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af76dbbb-b556-4637-afbd-0602be77f169/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...