./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-read.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c45ebcd-33b9-4cdf-9104-11d5778556f5/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c45ebcd-33b9-4cdf-9104-11d5778556f5/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_4c45ebcd-33b9-4cdf-9104-11d5778556f5/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c45ebcd-33b9-4cdf-9104-11d5778556f5/bin/uautomizer-j4sWxH34Be/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-read.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c45ebcd-33b9-4cdf-9104-11d5778556f5/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c45ebcd-33b9-4cdf-9104-11d5778556f5/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 07a396ef153f1ca8e856eefcfa25d3d77eb73f779a009e48698bf5ce12969740 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:14:04,328 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:14:04,331 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:14:04,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:14:04,389 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:14:04,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:14:04,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:14:04,399 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:14:04,402 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:14:04,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:14:04,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:14:04,412 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:14:04,412 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:14:04,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:14:04,417 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:14:04,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:14:04,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:14:04,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:14:04,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:14:04,438 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:14:04,440 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:14:04,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:14:04,444 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:14:04,445 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:14:04,449 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:14:04,450 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:14:04,450 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:14:04,453 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:14:04,453 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:14:04,455 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:14:04,455 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:14:04,456 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:14:04,458 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:14:04,459 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:14:04,461 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:14:04,461 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:14:04,462 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:14:04,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:14:04,462 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:14:04,463 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:14:04,464 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:14:04,464 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c45ebcd-33b9-4cdf-9104-11d5778556f5/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-21 19:14:04,505 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:14:04,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:14:04,506 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:14:04,507 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:14:04,508 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:14:04,508 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:14:04,508 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:14:04,509 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:14:04,509 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:14:04,509 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:14:04,510 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:14:04,511 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:14:04,511 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:14:04,511 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-21 19:14:04,511 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-21 19:14:04,511 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-21 19:14:04,512 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:14:04,512 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-21 19:14:04,512 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:14:04,512 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:14:04,513 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:14:04,513 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:14:04,513 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:14:04,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:14:04,514 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:14:04,514 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:14:04,514 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:14:04,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:14:04,515 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:14:04,515 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_4c45ebcd-33b9-4cdf-9104-11d5778556f5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c45ebcd-33b9-4cdf-9104-11d5778556f5/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 07a396ef153f1ca8e856eefcfa25d3d77eb73f779a009e48698bf5ce12969740 [2021-10-21 19:14:04,769 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:14:04,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:14:04,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:14:04,793 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:14:04,794 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:14:04,795 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c45ebcd-33b9-4cdf-9104-11d5778556f5/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-read.c [2021-10-21 19:14:04,869 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c45ebcd-33b9-4cdf-9104-11d5778556f5/bin/uautomizer-j4sWxH34Be/data/4207ade91/8222eadac2904d22be17ffbecb7f457b/FLAG6282fc170 [2021-10-21 19:14:05,311 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:14:05,312 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c45ebcd-33b9-4cdf-9104-11d5778556f5/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-read.c [2021-10-21 19:14:05,326 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c45ebcd-33b9-4cdf-9104-11d5778556f5/bin/uautomizer-j4sWxH34Be/data/4207ade91/8222eadac2904d22be17ffbecb7f457b/FLAG6282fc170 [2021-10-21 19:14:05,681 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c45ebcd-33b9-4cdf-9104-11d5778556f5/bin/uautomizer-j4sWxH34Be/data/4207ade91/8222eadac2904d22be17ffbecb7f457b [2021-10-21 19:14:05,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:14:05,684 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-21 19:14:05,688 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:14:05,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:14:05,692 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:14:05,692 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:14:05" (1/1) ... [2021-10-21 19:14:05,693 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37d49b40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:14:05, skipping insertion in model container [2021-10-21 19:14:05,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:14:05" (1/1) ... [2021-10-21 19:14:05,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:14:05,716 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:14:05,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:14:05,900 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:14:05,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:14:05,932 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:14:05,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:14:05 WrapperNode [2021-10-21 19:14:05,932 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:14:05,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:14:05,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:14:05,934 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:14:05,945 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:14:05" (1/1) ... [2021-10-21 19:14:05,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:14:05" (1/1) ... [2021-10-21 19:14:05,952 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:14:05" (1/1) ... [2021-10-21 19:14:05,952 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:14:05" (1/1) ... [2021-10-21 19:14:05,959 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:14:05" (1/1) ... [2021-10-21 19:14:05,964 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:14:05" (1/1) ... [2021-10-21 19:14:05,965 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:14:05" (1/1) ... [2021-10-21 19:14:05,968 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:14:05,968 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:14:05,969 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:14:05,969 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:14:05,973 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:14:05" (1/1) ... [2021-10-21 19:14:05,982 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:14:05,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c45ebcd-33b9-4cdf-9104-11d5778556f5/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:14:06,009 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c45ebcd-33b9-4cdf-9104-11d5778556f5/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:14:06,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c45ebcd-33b9-4cdf-9104-11d5778556f5/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:14:06,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-21 19:14:06,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:14:06,056 INFO L138 BoogieDeclarations]: Found implementation of procedure bar [2021-10-21 19:14:06,056 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-10-21 19:14:06,057 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-21 19:14:06,057 INFO L130 BoogieDeclarations]: Found specification of procedure bar [2021-10-21 19:14:06,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-21 19:14:06,058 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-10-21 19:14:06,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:14:06,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 19:14:06,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 19:14:06,060 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-21 19:14:06,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-21 19:14:06,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:14:06,352 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:14:06,352 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-21 19:14:06,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:14:06 BoogieIcfgContainer [2021-10-21 19:14:06,354 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:14:06,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:14:06,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:14:06,372 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:14:06,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:14:05" (1/3) ... [2021-10-21 19:14:06,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54d9aba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:14:06, skipping insertion in model container [2021-10-21 19:14:06,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:14:05" (2/3) ... [2021-10-21 19:14:06,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54d9aba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:14:06, skipping insertion in model container [2021-10-21 19:14:06,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:14:06" (3/3) ... [2021-10-21 19:14:06,376 INFO L111 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength2_-read.c [2021-10-21 19:14:06,381 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:14:06,381 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-10-21 19:14:06,445 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:14:06,452 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 19:14:06,452 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-10-21 19:14:06,468 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 32 states have (on average 1.65625) internal successors, (53), 43 states have internal predecessors, (53), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-21 19:14:06,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-21 19:14:06,475 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:14:06,476 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:14:06,476 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr2REQUIRES_VIOLATION === [barErr0REQUIRES_VIOLATION, barErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION (and 6 more)] === [2021-10-21 19:14:06,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:14:06,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1403638412, now seen corresponding path program 1 times [2021-10-21 19:14:06,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:14:06,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499103181] [2021-10-21 19:14:06,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:14:06,493 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:14:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:14:06,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:14:06,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:14:06,647 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 19:14:06,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:14:06,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499103181] [2021-10-21 19:14:06,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499103181] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:14:06,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:14:06,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:14:06,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870340931] [2021-10-21 19:14:06,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:14:06,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:14:06,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:14:06,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:14:06,672 INFO L87 Difference]: Start difference. First operand has 52 states, 32 states have (on average 1.65625) internal successors, (53), 43 states have internal predecessors, (53), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:14:06,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:14:06,771 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2021-10-21 19:14:06,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:14:06,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-10-21 19:14:06,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:14:06,780 INFO L225 Difference]: With dead ends: 52 [2021-10-21 19:14:06,781 INFO L226 Difference]: Without dead ends: 49 [2021-10-21 19:14:06,782 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:14:06,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-21 19:14:06,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-10-21 19:14:06,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 31 states have (on average 1.5161290322580645) internal successors, (47), 41 states have internal predecessors, (47), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-21 19:14:06,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2021-10-21 19:14:06,817 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 10 [2021-10-21 19:14:06,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:14:06,818 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2021-10-21 19:14:06,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:14:06,818 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2021-10-21 19:14:06,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-21 19:14:06,819 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:14:06,819 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:14:06,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:14:06,820 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr2REQUIRES_VIOLATION === [barErr0REQUIRES_VIOLATION, barErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION (and 6 more)] === [2021-10-21 19:14:06,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:14:06,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1403995904, now seen corresponding path program 1 times [2021-10-21 19:14:06,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:14:06,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159439754] [2021-10-21 19:14:06,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:14:06,864 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:14:06,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:14:06,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:14:06,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:14:06,969 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 19:14:06,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:14:06,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159439754] [2021-10-21 19:14:06,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159439754] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:14:06,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:14:06,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:14:06,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909782334] [2021-10-21 19:14:06,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:14:06,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:14:06,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:14:06,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:14:06,980 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:14:07,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:14:07,074 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2021-10-21 19:14:07,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:14:07,075 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-10-21 19:14:07,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:14:07,078 INFO L225 Difference]: With dead ends: 56 [2021-10-21 19:14:07,078 INFO L226 Difference]: Without dead ends: 56 [2021-10-21 19:14:07,079 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.4ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:14:07,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-21 19:14:07,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 49. [2021-10-21 19:14:07,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 41 states have internal predecessors, (46), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-21 19:14:07,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2021-10-21 19:14:07,090 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 10 [2021-10-21 19:14:07,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:14:07,091 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2021-10-21 19:14:07,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:14:07,091 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2021-10-21 19:14:07,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 19:14:07,092 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:14:07,092 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:14:07,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:14:07,093 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting fooErr0REQUIRES_VIOLATION === [barErr0REQUIRES_VIOLATION, barErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION (and 6 more)] === [2021-10-21 19:14:07,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:14:07,094 INFO L82 PathProgramCache]: Analyzing trace with hash -571487811, now seen corresponding path program 1 times [2021-10-21 19:14:07,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:14:07,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036241133] [2021-10-21 19:14:07,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:14:07,095 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:14:07,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:14:07,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:14:07,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:14:07,229 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 19:14:07,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:14:07,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036241133] [2021-10-21 19:14:07,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036241133] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:14:07,232 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:14:07,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:14:07,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816678310] [2021-10-21 19:14:07,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:14:07,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:14:07,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:14:07,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:14:07,241 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:14:07,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:14:07,422 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2021-10-21 19:14:07,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:14:07,423 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 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 19:14:07,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:14:07,426 INFO L225 Difference]: With dead ends: 63 [2021-10-21 19:14:07,426 INFO L226 Difference]: Without dead ends: 63 [2021-10-21 19:14:07,427 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 44.9ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:14:07,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-21 19:14:07,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2021-10-21 19:14:07,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 47 states have internal predecessors, (52), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-10-21 19:14:07,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2021-10-21 19:14:07,444 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 11 [2021-10-21 19:14:07,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:14:07,445 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2021-10-21 19:14:07,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:14:07,446 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2021-10-21 19:14:07,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-21 19:14:07,448 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:14:07,448 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:14:07,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 19:14:07,448 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting barErr0REQUIRES_VIOLATION === [barErr0REQUIRES_VIOLATION, barErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION (and 6 more)] === [2021-10-21 19:14:07,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:14:07,454 INFO L82 PathProgramCache]: Analyzing trace with hash 57103265, now seen corresponding path program 1 times [2021-10-21 19:14:07,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:14:07,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465995189] [2021-10-21 19:14:07,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:14:07,456 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:14:07,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:14:07,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:14:07,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:14:07,561 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 19:14:07,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:14:07,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465995189] [2021-10-21 19:14:07,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465995189] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:14:07,563 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:14:07,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:14:07,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277957136] [2021-10-21 19:14:07,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:14:07,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:14:07,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:14:07,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:14:07,571 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:14:07,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:14:07,703 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2021-10-21 19:14:07,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:14:07,704 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-10-21 19:14:07,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:14:07,709 INFO L225 Difference]: With dead ends: 55 [2021-10-21 19:14:07,709 INFO L226 Difference]: Without dead ends: 55 [2021-10-21 19:14:07,710 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.0ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:14:07,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-10-21 19:14:07,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-10-21 19:14:07,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 36 states have (on average 1.3888888888888888) internal successors, (50), 45 states have internal predecessors, (50), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-10-21 19:14:07,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2021-10-21 19:14:07,726 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 14 [2021-10-21 19:14:07,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:14:07,726 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2021-10-21 19:14:07,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:14:07,727 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2021-10-21 19:14:07,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-21 19:14:07,728 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:14:07,729 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:14:07,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 19:14:07,730 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting barErr1REQUIRES_VIOLATION === [barErr0REQUIRES_VIOLATION, barErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION (and 6 more)] === [2021-10-21 19:14:07,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:14:07,731 INFO L82 PathProgramCache]: Analyzing trace with hash 57103266, now seen corresponding path program 1 times [2021-10-21 19:14:07,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:14:07,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917397827] [2021-10-21 19:14:07,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:14:07,732 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:14:07,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:14:07,768 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:14:07,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:14:07,819 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:14:07,820 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 19:14:07,821 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location barErr1REQUIRES_VIOLATION [2021-10-21 19:14:07,823 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location barErr0REQUIRES_VIOLATION [2021-10-21 19:14:07,823 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooErr0REQUIRES_VIOLATION [2021-10-21 19:14:07,824 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooErr1REQUIRES_VIOLATION [2021-10-21 19:14:07,824 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooErr2REQUIRES_VIOLATION [2021-10-21 19:14:07,824 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooErr3REQUIRES_VIOLATION [2021-10-21 19:14:07,824 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-21 19:14:07,824 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-21 19:14:07,825 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-21 19:14:07,825 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-21 19:14:07,825 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4ENSURES_VIOLATIONMEMORY_LEAK [2021-10-21 19:14:07,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-21 19:14:07,832 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:14:07,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:14:07 BoogieIcfgContainer [2021-10-21 19:14:07,850 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:14:07,850 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:14:07,850 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:14:07,850 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:14:07,851 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:14:06" (3/4) ... [2021-10-21 19:14:07,853 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-21 19:14:07,887 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c45ebcd-33b9-4cdf-9104-11d5778556f5/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:14:07,887 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:14:07,889 INFO L168 Benchmark]: Toolchain (without parser) took 2203.64 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 58.4 MB in the beginning and 51.6 MB in the end (delta: 6.7 MB). Peak memory consumption was 28.8 MB. Max. memory is 16.1 GB. [2021-10-21 19:14:07,889 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 90.2 MB. Free memory is still 43.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:14:07,890 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.52 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 58.2 MB in the beginning and 91.7 MB in the end (delta: -33.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:14:07,891 INFO L168 Benchmark]: Boogie Preprocessor took 34.44 ms. Allocated memory is still 115.3 MB. Free memory was 91.7 MB in the beginning and 90.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:14:07,891 INFO L168 Benchmark]: RCFGBuilder took 386.18 ms. Allocated memory is still 115.3 MB. Free memory was 90.0 MB in the beginning and 78.2 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:14:07,892 INFO L168 Benchmark]: TraceAbstraction took 1493.54 ms. Allocated memory is still 115.3 MB. Free memory was 77.8 MB in the beginning and 53.8 MB in the end (delta: 24.0 MB). Peak memory consumption was 23.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:14:07,892 INFO L168 Benchmark]: Witness Printer took 37.36 ms. Allocated memory is still 115.3 MB. Free memory was 53.8 MB in the beginning and 51.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:14:07,895 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 90.2 MB. Free memory is still 43.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 244.52 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 58.2 MB in the beginning and 91.7 MB in the end (delta: -33.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.44 ms. Allocated memory is still 115.3 MB. Free memory was 91.7 MB in the beginning and 90.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 386.18 ms. Allocated memory is still 115.3 MB. Free memory was 90.0 MB in the beginning and 78.2 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1493.54 ms. Allocated memory is still 115.3 MB. Free memory was 77.8 MB in the beginning and 53.8 MB in the end (delta: 24.0 MB). Peak memory consumption was 23.2 MB. Max. memory is 16.1 GB. * Witness Printer took 37.36 ms. Allocated memory is still 115.3 MB. Free memory was 53.8 MB in the beginning and 51.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 - CounterExampleResult [Line: 14]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L32] int i, b[100]; [L33] i = 0 VAL [b={3:0}, i=0] [L33] COND TRUE i < 100 VAL [b={3:0}, i=0] [L34] CALL foo(i, b, i) VAL [\old(n)=0, \old(size)=0, b={3:0}] [L21] int a[n], i; [L22] i = 0 VAL [\old(n)=0, \old(size)=0, a={2:0}, b={3:0}, b={3:0}, i=0, n=0, size=0] [L22] COND FALSE !(i < size) VAL [\old(n)=0, \old(size)=0, a={2:0}, b={3:0}, b={3:0}, i=0, n=0, size=0] [L25] CALL bar(a, size + 1) VAL [\old(size)=1, b={2:0}] [L12] int res = 0, i; [L13] i = 0 VAL [\old(size)=1, b={2:0}, b={2:0}, i=0, res=0, size=1] [L13] COND TRUE i < size VAL [\old(size)=1, b={2:0}, b={2:0}, i=0, res=0, size=1] [L14] b[i] - UnprovableResult [Line: 14]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 23]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 23]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 23]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 23]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 34]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 34]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 37]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 37]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 31]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 52 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 1386.5ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 15.8ms, AutomataDifference: 560.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 164 SDtfs, 101 SDslu, 178 SDs, 0 SdLazy, 340 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 299.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 122.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=3, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 63.8ms AutomataMinimizationTime, 4 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 21.8ms SsaConstructionTime, 100.6ms SatisfiabilityAnalysisTime, 332.7ms InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 111 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-21 19:14:07,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c45ebcd-33b9-4cdf-9104-11d5778556f5/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...