./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/nested_structure_noptr-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac807039-0cfa-4dd2-885c-c8bf0973d88e/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac807039-0cfa-4dd2-885c-c8bf0973d88e/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac807039-0cfa-4dd2-885c-c8bf0973d88e/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac807039-0cfa-4dd2-885c-c8bf0973d88e/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/nested_structure_noptr-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac807039-0cfa-4dd2-885c-c8bf0973d88e/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac807039-0cfa-4dd2-885c-c8bf0973d88e/bin/uautomizer-hJ6jxDFKc3 --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 437b286d4a83da9c108217f5d4eb7d75e260462f .................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 19:57:42,472 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:57:42,475 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:57:42,531 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:57:42,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:57:42,536 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:57:42,538 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:57:42,542 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:57:42,545 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:57:42,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:57:42,552 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:57:42,554 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:57:42,554 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:57:42,557 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:57:42,559 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:57:42,564 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:57:42,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:57:42,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:57:42,569 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:57:42,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:57:42,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:57:42,581 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:57:42,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:57:42,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:57:42,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:57:42,595 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:57:42,596 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:57:42,598 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:57:42,599 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:57:42,600 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:57:42,601 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:57:42,602 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:57:42,604 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:57:42,605 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:57:42,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:57:42,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:57:42,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:57:42,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:57:42,609 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:57:42,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:57:42,610 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:57:42,611 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac807039-0cfa-4dd2-885c-c8bf0973d88e/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 19:57:42,656 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:57:42,657 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:57:42,658 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:57:42,658 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:57:42,667 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:57:42,667 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:57:42,668 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:57:42,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:57:42,668 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:57:42,669 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:57:42,670 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:57:42,670 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:57:42,671 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:57:42,671 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:57:42,671 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:57:42,672 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:57:42,672 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:57:42,672 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:57:42,672 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:57:42,673 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:57:42,673 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:57:42,673 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:57:42,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:57:42,674 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:57:42,674 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:57:42,675 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:57:42,675 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:57:42,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:57:42,676 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:57:42,677 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:57:42,678 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:57:42,678 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:57:42,679 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_ac807039-0cfa-4dd2-885c-c8bf0973d88e/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac807039-0cfa-4dd2-885c-c8bf0973d88e/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 437b286d4a83da9c108217f5d4eb7d75e260462f [2021-10-15 19:57:43,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:57:43,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:57:43,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:57:43,062 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:57:43,063 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:57:43,065 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac807039-0cfa-4dd2-885c-c8bf0973d88e/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/ldv-regression/nested_structure_noptr-2.i [2021-10-15 19:57:43,166 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac807039-0cfa-4dd2-885c-c8bf0973d88e/bin/uautomizer-hJ6jxDFKc3/data/48db868e8/a1fca5639ff84d56b86120521c0d92e7/FLAGd311756e2 [2021-10-15 19:57:43,690 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:57:43,691 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac807039-0cfa-4dd2-885c-c8bf0973d88e/sv-benchmarks/c/ldv-regression/nested_structure_noptr-2.i [2021-10-15 19:57:43,697 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac807039-0cfa-4dd2-885c-c8bf0973d88e/bin/uautomizer-hJ6jxDFKc3/data/48db868e8/a1fca5639ff84d56b86120521c0d92e7/FLAGd311756e2 [2021-10-15 19:57:44,047 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac807039-0cfa-4dd2-885c-c8bf0973d88e/bin/uautomizer-hJ6jxDFKc3/data/48db868e8/a1fca5639ff84d56b86120521c0d92e7 [2021-10-15 19:57:44,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:57:44,061 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:57:44,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:57:44,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:57:44,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:57:44,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:57:44" (1/1) ... [2021-10-15 19:57:44,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b893745 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:57:44, skipping insertion in model container [2021-10-15 19:57:44,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:57:44" (1/1) ... [2021-10-15 19:57:44,085 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:57:44,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:57:44,288 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_ac807039-0cfa-4dd2-885c-c8bf0973d88e/sv-benchmarks/c/ldv-regression/nested_structure_noptr-2.i[310,323] [2021-10-15 19:57:44,324 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:57:44,339 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:57:44,353 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_ac807039-0cfa-4dd2-885c-c8bf0973d88e/sv-benchmarks/c/ldv-regression/nested_structure_noptr-2.i[310,323] [2021-10-15 19:57:44,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:57:44,377 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:57:44,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:57:44 WrapperNode [2021-10-15 19:57:44,379 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:57:44,380 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:57:44,380 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:57:44,381 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:57:44,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:57:44" (1/1) ... [2021-10-15 19:57:44,395 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:57:44" (1/1) ... [2021-10-15 19:57:44,414 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:57:44,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:57:44,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:57:44,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:57:44,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:57:44" (1/1) ... [2021-10-15 19:57:44,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:57:44" (1/1) ... [2021-10-15 19:57:44,435 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:57:44" (1/1) ... [2021-10-15 19:57:44,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:57:44" (1/1) ... [2021-10-15 19:57:44,442 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:57:44" (1/1) ... [2021-10-15 19:57:44,444 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:57:44" (1/1) ... [2021-10-15 19:57:44,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:57:44" (1/1) ... [2021-10-15 19:57:44,452 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:57:44,453 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:57:44,454 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:57:44,454 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:57:44,455 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:57:44" (1/1) ... [2021-10-15 19:57:44,462 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:57:44,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac807039-0cfa-4dd2-885c-c8bf0973d88e/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:57:44,489 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac807039-0cfa-4dd2-885c-c8bf0973d88e/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:57:44,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac807039-0cfa-4dd2-885c-c8bf0973d88e/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:57:44,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-15 19:57:44,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:57:44,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:57:44,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-15 19:57:44,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 19:57:44,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:57:44,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-15 19:57:44,793 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:57:44,794 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-15 19:57:44,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:57:44 BoogieIcfgContainer [2021-10-15 19:57:44,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:57:44,802 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:57:44,802 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:57:44,806 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:57:44,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:57:44" (1/3) ... [2021-10-15 19:57:44,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@633981c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:57:44, skipping insertion in model container [2021-10-15 19:57:44,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:57:44" (2/3) ... [2021-10-15 19:57:44,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@633981c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:57:44, skipping insertion in model container [2021-10-15 19:57:44,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:57:44" (3/3) ... [2021-10-15 19:57:44,811 INFO L111 eAbstractionObserver]: Analyzing ICFG nested_structure_noptr-2.i [2021-10-15 19:57:44,823 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:57:44,823 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 19:57:44,891 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:57:44,905 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-15 19:57:44,905 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 19:57:44,919 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 9 places, 9 transitions, 18 flow [2021-10-15 19:57:44,949 INFO L129 PetriNetUnfolder]: 1/9 cut-off events. [2021-10-15 19:57:44,950 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:57:44,952 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10 conditions, 9 events. 1/9 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/7 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-10-15 19:57:44,952 INFO L82 GeneralOperation]: Start removeDead. Operand has 9 places, 9 transitions, 18 flow [2021-10-15 19:57:44,958 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 5 places, 4 transitions, 8 flow [2021-10-15 19:57:44,962 INFO L129 PetriNetUnfolder]: 0/3 cut-off events. [2021-10-15 19:57:44,963 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:57:44,963 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:57:44,964 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-10-15 19:57:44,965 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:57:44,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:57:44,977 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2021-10-15 19:57:44,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:57:45,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736669364] [2021-10-15 19:57:45,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:57:45,002 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:57:45,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:57:45,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:57:45,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:57:45,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736669364] [2021-10-15 19:57:45,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736669364] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:57:45,298 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:57:45,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 19:57:45,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519369609] [2021-10-15 19:57:45,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:57:45,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:57:45,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:57:45,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:57:45,355 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 9 [2021-10-15 19:57:45,373 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 5 places, 4 transitions, 8 flow. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-10-15 19:57:45,373 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:57:45,374 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 9 [2021-10-15 19:57:45,375 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:57:45,380 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-10-15 19:57:45,381 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:57:45,381 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5 conditions, 2 events. 0/2 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/3 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-10-15 19:57:45,382 INFO L132 encePairwiseOnDemand]: 7/9 looper letters, 0 selfloop transitions, 0 changer transitions 2/2 dead transitions. [2021-10-15 19:57:45,383 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 5 places, 2 transitions, 6 flow [2021-10-15 19:57:45,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:57:45,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:57:45,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 14 transitions. [2021-10-15 19:57:45,410 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2021-10-15 19:57:45,411 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 14 transitions. [2021-10-15 19:57:45,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 14 transitions. [2021-10-15 19:57:45,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:57:45,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 14 transitions. [2021-10-15 19:57:45,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-10-15 19:57:45,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2021-10-15 19:57:45,422 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2021-10-15 19:57:45,425 INFO L186 Difference]: Start difference. First operand has 5 places, 4 transitions, 8 flow. Second operand 3 states and 14 transitions. [2021-10-15 19:57:45,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 5 places, 2 transitions, 6 flow [2021-10-15 19:57:45,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 5 places, 2 transitions, 6 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:57:45,430 INFO L242 Difference]: Finished difference. Result has 5 places, 0 transitions, 0 flow [2021-10-15 19:57:45,433 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=9, PETRI_DIFFERENCE_MINUEND_FLOW=4, PETRI_DIFFERENCE_MINUEND_PLACES=3, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=5, PETRI_TRANSITIONS=0} [2021-10-15 19:57:45,434 INFO L334 CegarLoopForPetriNet]: 5 programPoint places, 0 predicate places. [2021-10-15 19:57:45,435 INFO L470 AbstractCegarLoop]: Abstraction has has 5 places, 0 transitions, 0 flow [2021-10-15 19:57:45,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-10-15 19:57:45,442 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:57:45,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 19:57:45,452 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:57:45,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:57:45 BoogieIcfgContainer [2021-10-15 19:57:45,458 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:57:45,459 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:57:45,459 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:57:45,460 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:57:45,460 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:57:44" (3/4) ... [2021-10-15 19:57:45,464 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 19:57:45,480 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-15 19:57:45,481 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-15 19:57:45,481 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:57:45,482 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:57:45,536 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac807039-0cfa-4dd2-885c-c8bf0973d88e/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 19:57:45,541 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:57:45,544 INFO L168 Benchmark]: Toolchain (without parser) took 1481.17 ms. Allocated memory is still 96.5 MB. Free memory was 65.4 MB in the beginning and 40.7 MB in the end (delta: 24.7 MB). Peak memory consumption was 22.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:57:45,545 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 96.5 MB. Free memory was 51.9 MB in the beginning and 51.9 MB in the end (delta: 49.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:57:45,547 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.33 ms. Allocated memory is still 96.5 MB. Free memory was 65.1 MB in the beginning and 73.8 MB in the end (delta: -8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:57:45,547 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.09 ms. Allocated memory is still 96.5 MB. Free memory was 73.3 MB in the beginning and 72.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:57:45,548 INFO L168 Benchmark]: Boogie Preprocessor took 37.46 ms. Allocated memory is still 96.5 MB. Free memory was 72.1 MB in the beginning and 71.2 MB in the end (delta: 960.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:57:45,549 INFO L168 Benchmark]: RCFGBuilder took 346.23 ms. Allocated memory is still 96.5 MB. Free memory was 71.2 MB in the beginning and 62.5 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:57:45,550 INFO L168 Benchmark]: TraceAbstraction took 656.83 ms. Allocated memory is still 96.5 MB. Free memory was 62.1 MB in the beginning and 43.2 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-15 19:57:45,550 INFO L168 Benchmark]: Witness Printer took 82.17 ms. Allocated memory is still 96.5 MB. Free memory was 43.2 MB in the beginning and 40.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:57:45,558 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 96.5 MB. Free memory was 51.9 MB in the beginning and 51.9 MB in the end (delta: 49.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 312.33 ms. Allocated memory is still 96.5 MB. Free memory was 65.1 MB in the beginning and 73.8 MB in the end (delta: -8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.09 ms. Allocated memory is still 96.5 MB. Free memory was 73.3 MB in the beginning and 72.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.46 ms. Allocated memory is still 96.5 MB. Free memory was 72.1 MB in the beginning and 71.2 MB in the end (delta: 960.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 346.23 ms. Allocated memory is still 96.5 MB. Free memory was 71.2 MB in the beginning and 62.5 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 656.83 ms. Allocated memory is still 96.5 MB. Free memory was 62.1 MB in the beginning and 43.2 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * Witness Printer took 82.17 ms. Allocated memory is still 96.5 MB. Free memory was 43.2 MB in the beginning and 40.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 563.6ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 85.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 52.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 13.1ms SsaConstructionTime, 49.4ms SatisfiabilityAnalysisTime, 140.0ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-15 19:57:45,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac807039-0cfa-4dd2-885c-c8bf0973d88e/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...