./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-simple-white-blue-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743c6af9-1211-48ce-9138-837f4e6d5c70/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743c6af9-1211-48ce-9138-837f4e6d5c70/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743c6af9-1211-48ce-9138-837f4e6d5c70/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743c6af9-1211-48ce-9138-837f4e6d5c70/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-simple-white-blue-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743c6af9-1211-48ce-9138-837f4e6d5c70/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743c6af9-1211-48ce-9138-837f4e6d5c70/bin/uautomizer-WNIpwEf4Nt --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 c783d9214012f4bff6327cd9f7b291047ddaff08 ................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:40:48,318 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:40:48,321 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:40:48,369 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:40:48,370 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:40:48,371 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:40:48,373 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:40:48,375 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:40:48,377 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:40:48,379 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:40:48,380 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:40:48,381 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:40:48,382 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:40:48,383 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:40:48,385 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:40:48,386 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:40:48,387 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:40:48,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:40:48,390 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:40:48,392 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:40:48,394 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:40:48,395 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:40:48,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:40:48,398 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:40:48,401 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:40:48,402 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:40:48,402 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:40:48,403 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:40:48,404 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:40:48,405 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:40:48,405 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:40:48,406 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:40:48,407 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:40:48,408 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:40:48,409 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:40:48,410 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:40:48,411 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:40:48,411 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:40:48,411 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:40:48,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:40:48,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:40:48,414 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743c6af9-1211-48ce-9138-837f4e6d5c70/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 00:40:48,437 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:40:48,438 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:40:48,438 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:40:48,438 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:40:48,440 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:40:48,440 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:40:48,440 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:40:48,440 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:40:48,440 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:40:48,441 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:40:48,441 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:40:48,441 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:40:48,441 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 00:40:48,441 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:40:48,441 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 00:40:48,442 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:40:48,442 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:40:48,442 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:40:48,442 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 00:40:48,442 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:40:48,443 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:40:48,443 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:40:48,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:40:48,443 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:40:48,443 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:40:48,444 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 00:40:48,444 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:40:48,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:40:48,444 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 00:40:48,444 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:40:48,445 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_743c6af9-1211-48ce-9138-837f4e6d5c70/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743c6af9-1211-48ce-9138-837f4e6d5c70/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c783d9214012f4bff6327cd9f7b291047ddaff08 [2021-10-13 00:40:48,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:40:48,714 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:40:48,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:40:48,719 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:40:48,720 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:40:48,721 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743c6af9-1211-48ce-9138-837f4e6d5c70/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/forester-heap/sll-simple-white-blue-2.i [2021-10-13 00:40:48,818 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743c6af9-1211-48ce-9138-837f4e6d5c70/bin/uautomizer-WNIpwEf4Nt/data/b57a27d1b/3e93c5a12e0d40e2beb7c2a7e7bcad5e/FLAGdf7d39c27 [2021-10-13 00:40:49,355 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:40:49,356 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743c6af9-1211-48ce-9138-837f4e6d5c70/sv-benchmarks/c/forester-heap/sll-simple-white-blue-2.i [2021-10-13 00:40:49,367 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743c6af9-1211-48ce-9138-837f4e6d5c70/bin/uautomizer-WNIpwEf4Nt/data/b57a27d1b/3e93c5a12e0d40e2beb7c2a7e7bcad5e/FLAGdf7d39c27 [2021-10-13 00:40:49,653 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743c6af9-1211-48ce-9138-837f4e6d5c70/bin/uautomizer-WNIpwEf4Nt/data/b57a27d1b/3e93c5a12e0d40e2beb7c2a7e7bcad5e [2021-10-13 00:40:49,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:40:49,659 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:40:49,661 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:40:49,667 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:40:49,674 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:40:49,675 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:40:49" (1/1) ... [2021-10-13 00:40:49,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5eaeb7e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:40:49, skipping insertion in model container [2021-10-13 00:40:49,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:40:49" (1/1) ... [2021-10-13 00:40:49,683 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:40:49,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:40:50,006 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_743c6af9-1211-48ce-9138-837f4e6d5c70/sv-benchmarks/c/forester-heap/sll-simple-white-blue-2.i[22617,22630] [2021-10-13 00:40:50,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:40:50,019 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:40:50,056 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_743c6af9-1211-48ce-9138-837f4e6d5c70/sv-benchmarks/c/forester-heap/sll-simple-white-blue-2.i[22617,22630] [2021-10-13 00:40:50,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:40:50,086 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:40:50,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:40:50 WrapperNode [2021-10-13 00:40:50,087 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:40:50,088 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:40:50,088 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:40:50,088 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:40:50,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:40:50" (1/1) ... [2021-10-13 00:40:50,109 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:40:50" (1/1) ... [2021-10-13 00:40:50,130 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:40:50,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:40:50,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:40:50,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:40:50,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:40:50" (1/1) ... [2021-10-13 00:40:50,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:40:50" (1/1) ... [2021-10-13 00:40:50,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:40:50" (1/1) ... [2021-10-13 00:40:50,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:40:50" (1/1) ... [2021-10-13 00:40:50,152 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:40:50" (1/1) ... [2021-10-13 00:40:50,156 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:40:50" (1/1) ... [2021-10-13 00:40:50,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:40:50" (1/1) ... [2021-10-13 00:40:50,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:40:50,162 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:40:50,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:40:50,163 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:40:50,164 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:40:50" (1/1) ... [2021-10-13 00:40:50,171 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:40:50,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743c6af9-1211-48ce-9138-837f4e6d5c70/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:40:50,219 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743c6af9-1211-48ce-9138-837f4e6d5c70/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:40:50,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743c6af9-1211-48ce-9138-837f4e6d5c70/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:40:50,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 00:40:50,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 00:40:50,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 00:40:50,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 00:40:50,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:40:50,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 00:40:50,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 00:40:50,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:40:50,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:40:50,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:40:50,652 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:40:50,653 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-13 00:40:50,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:40:50 BoogieIcfgContainer [2021-10-13 00:40:50,655 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:40:50,666 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:40:50,666 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:40:50,680 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:40:50,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:40:49" (1/3) ... [2021-10-13 00:40:50,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@599fa5cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:40:50, skipping insertion in model container [2021-10-13 00:40:50,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:40:50" (2/3) ... [2021-10-13 00:40:50,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@599fa5cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:40:50, skipping insertion in model container [2021-10-13 00:40:50,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:40:50" (3/3) ... [2021-10-13 00:40:50,683 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-simple-white-blue-2.i [2021-10-13 00:40:50,688 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:40:50,689 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 00:40:50,749 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:40:50,762 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-10-13 00:40:50,765 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 00:40:50,781 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 25 states have internal predecessors, (41), 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) [2021-10-13 00:40:50,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 00:40:50,786 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:40:50,787 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:40:50,788 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:40:50,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:40:50,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1041580535, now seen corresponding path program 1 times [2021-10-13 00:40:50,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:40:50,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286462055] [2021-10-13 00:40:50,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:40:50,809 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:40:50,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:40:51,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:40:51,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:40:51,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286462055] [2021-10-13 00:40:51,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286462055] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:40:51,015 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:40:51,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:40:51,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682633412] [2021-10-13 00:40:51,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 00:40:51,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:40:51,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 00:40:51,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:40:51,055 INFO L87 Difference]: Start difference. First operand has 26 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 25 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:40:51,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:40:51,073 INFO L93 Difference]: Finished difference Result 47 states and 74 transitions. [2021-10-13 00:40:51,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 00:40:51,074 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 00:40:51,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:40:51,083 INFO L225 Difference]: With dead ends: 47 [2021-10-13 00:40:51,083 INFO L226 Difference]: Without dead ends: 19 [2021-10-13 00:40:51,085 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:40:51,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-13 00:40:51,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-13 00:40:51,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 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) [2021-10-13 00:40:51,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2021-10-13 00:40:51,112 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 11 [2021-10-13 00:40:51,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:40:51,112 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2021-10-13 00:40:51,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:40:51,113 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2021-10-13 00:40:51,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 00:40:51,113 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:40:51,114 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:40:51,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 00:40:51,114 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:40:51,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:40:51,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1993200173, now seen corresponding path program 1 times [2021-10-13 00:40:51,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:40:51,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810163864] [2021-10-13 00:40:51,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:40:51,116 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:40:51,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:40:51,174 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:40:51,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:40:51,256 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:40:51,257 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 00:40:51,259 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:40:51,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 00:40:51,266 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:40:51,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:40:51 BoogieIcfgContainer [2021-10-13 00:40:51,287 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:40:51,288 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:40:51,288 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:40:51,289 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:40:51,289 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:40:50" (3/4) ... [2021-10-13 00:40:51,291 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 00:40:51,343 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743c6af9-1211-48ce-9138-837f4e6d5c70/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:40:51,343 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:40:51,345 INFO L168 Benchmark]: Toolchain (without parser) took 1685.57 ms. Allocated memory is still 107.0 MB. Free memory was 73.2 MB in the beginning and 79.0 MB in the end (delta: -5.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:40:51,346 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 81.8 MB. Free memory was 39.2 MB in the beginning and 39.2 MB in the end (delta: 40.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:40:51,346 INFO L168 Benchmark]: CACSL2BoogieTranslator took 426.78 ms. Allocated memory is still 107.0 MB. Free memory was 73.0 MB in the beginning and 76.3 MB in the end (delta: -3.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:40:51,347 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.53 ms. Allocated memory is still 107.0 MB. Free memory was 76.3 MB in the beginning and 74.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:40:51,347 INFO L168 Benchmark]: Boogie Preprocessor took 30.29 ms. Allocated memory is still 107.0 MB. Free memory was 74.7 MB in the beginning and 73.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:40:51,348 INFO L168 Benchmark]: RCFGBuilder took 501.85 ms. Allocated memory is still 107.0 MB. Free memory was 72.6 MB in the beginning and 58.2 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-13 00:40:51,349 INFO L168 Benchmark]: TraceAbstraction took 621.85 ms. Allocated memory is still 107.0 MB. Free memory was 57.7 MB in the beginning and 81.1 MB in the end (delta: -23.4 MB). Peak memory consumption was 30.8 MB. Max. memory is 16.1 GB. [2021-10-13 00:40:51,349 INFO L168 Benchmark]: Witness Printer took 55.34 ms. Allocated memory is still 107.0 MB. Free memory was 81.1 MB in the beginning and 79.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:40:51,352 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 81.8 MB. Free memory was 39.2 MB in the beginning and 39.2 MB in the end (delta: 40.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 426.78 ms. Allocated memory is still 107.0 MB. Free memory was 73.0 MB in the beginning and 76.3 MB in the end (delta: -3.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.53 ms. Allocated memory is still 107.0 MB. Free memory was 76.3 MB in the beginning and 74.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.29 ms. Allocated memory is still 107.0 MB. Free memory was 74.7 MB in the beginning and 73.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 501.85 ms. Allocated memory is still 107.0 MB. Free memory was 72.6 MB in the beginning and 58.2 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 621.85 ms. Allocated memory is still 107.0 MB. Free memory was 57.7 MB in the beginning and 81.1 MB in the end (delta: -23.4 MB). Peak memory consumption was 30.8 MB. Max. memory is 16.1 GB. * Witness Printer took 55.34 ms. Allocated memory is still 107.0 MB. Free memory was 81.1 MB in the beginning and 79.0 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: 1053]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L999] SLL* head = malloc(sizeof(SLL)); [L1000] head->next = ((void*)0) [L1001] head->data = 0 [L1003] SLL* x = head; [L1006] COND FALSE !(__VERIFIER_nondet_int()) [L1016] COND TRUE __VERIFIER_nondet_int() [L1017] x = malloc(sizeof(SLL)) [L1018] x->data = 1 [L1019] x->next = head [L1020] head = x [L1040] x = head [L1043] EXPR x->data [L1043] COND FALSE !(x->data != 1) [L1049] EXPR x->next [L1049] x = x->next [L1050] COND TRUE \read(*x) [L1052] EXPR x->data [L1052] COND TRUE x->data != 1 [L1053] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 518.2ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 10.0ms, AutomataDifference: 50.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 31 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 15.8ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 23.6ms SsaConstructionTime, 83.9ms SatisfiabilityAnalysisTime, 49.5ms InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 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 RESULT: Ultimate proved your program to be incorrect! [2021-10-13 00:40:51,396 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743c6af9-1211-48ce-9138-837f4e6d5c70/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...