./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/nested_structure_noptr-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c079ec-69aa-480c-b98c-87d701fe5297/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c079ec-69aa-480c-b98c-87d701fe5297/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c079ec-69aa-480c-b98c-87d701fe5297/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c079ec-69aa-480c-b98c-87d701fe5297/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/nested_structure_noptr-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c079ec-69aa-480c-b98c-87d701fe5297/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c079ec-69aa-480c-b98c-87d701fe5297/bin/uautomizer-Z5i5R5N3CC --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 5b7ab499196b1f104131058ee0c669546ebbe7a6 ........................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:19:39,527 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:19:39,530 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:19:39,571 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:19:39,573 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:19:39,579 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:19:39,582 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:19:39,587 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:19:39,590 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:19:39,598 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:19:39,599 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:19:39,601 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:19:39,601 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:19:39,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:19:39,607 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:19:39,609 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:19:39,611 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:19:39,616 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:19:39,619 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:19:39,628 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:19:39,630 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:19:39,632 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:19:39,636 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:19:39,637 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:19:39,648 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:19:39,649 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:19:39,649 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:19:39,652 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:19:39,653 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:19:39,654 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:19:39,655 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:19:39,656 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:19:39,659 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:19:39,660 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:19:39,662 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:19:39,663 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:19:39,664 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:19:39,664 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:19:39,664 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:19:39,665 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:19:39,666 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:19:39,667 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c079ec-69aa-480c-b98c-87d701fe5297/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-11 00:19:39,712 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:19:39,717 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:19:39,719 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:19:39,719 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:19:39,720 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:19:39,720 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:19:39,720 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:19:39,720 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:19:39,721 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:19:39,729 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:19:39,730 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:19:39,731 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:19:39,731 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:19:39,731 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:19:39,731 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:19:39,732 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:19:39,732 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:19:39,732 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:19:39,733 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:19:39,735 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:19:39,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:19:39,742 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:19:39,742 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:19:39,743 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:19:39,743 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:19:39,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:19:39,746 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:19:39,746 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:19:39,746 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_78c079ec-69aa-480c-b98c-87d701fe5297/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c079ec-69aa-480c-b98c-87d701fe5297/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b7ab499196b1f104131058ee0c669546ebbe7a6 [2021-10-11 00:19:40,061 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:19:40,087 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:19:40,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:19:40,090 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:19:40,103 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:19:40,104 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c079ec-69aa-480c-b98c-87d701fe5297/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/ldv-regression/nested_structure_noptr-1.i [2021-10-11 00:19:40,192 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c079ec-69aa-480c-b98c-87d701fe5297/bin/uautomizer-Z5i5R5N3CC/data/141b0c3ae/171b3275896e4134a043c45a23a091b8/FLAG02276c3e5 [2021-10-11 00:19:40,732 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:19:40,733 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c079ec-69aa-480c-b98c-87d701fe5297/sv-benchmarks/c/ldv-regression/nested_structure_noptr-1.i [2021-10-11 00:19:40,740 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c079ec-69aa-480c-b98c-87d701fe5297/bin/uautomizer-Z5i5R5N3CC/data/141b0c3ae/171b3275896e4134a043c45a23a091b8/FLAG02276c3e5 [2021-10-11 00:19:41,068 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c079ec-69aa-480c-b98c-87d701fe5297/bin/uautomizer-Z5i5R5N3CC/data/141b0c3ae/171b3275896e4134a043c45a23a091b8 [2021-10-11 00:19:41,071 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:19:41,073 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:19:41,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:19:41,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:19:41,080 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:19:41,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:19:41" (1/1) ... [2021-10-11 00:19:41,083 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@510af097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:41, skipping insertion in model container [2021-10-11 00:19:41,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:19:41" (1/1) ... [2021-10-11 00:19:41,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:19:41,113 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:19:41,333 WARN L226 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_78c079ec-69aa-480c-b98c-87d701fe5297/sv-benchmarks/c/ldv-regression/nested_structure_noptr-1.i[824,837] [2021-10-11 00:19:41,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:19:41,353 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:19:41,367 WARN L226 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_78c079ec-69aa-480c-b98c-87d701fe5297/sv-benchmarks/c/ldv-regression/nested_structure_noptr-1.i[824,837] [2021-10-11 00:19:41,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:19:41,391 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:19:41,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:41 WrapperNode [2021-10-11 00:19:41,392 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:19:41,394 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:19:41,394 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:19:41,394 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:19:41,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:41" (1/1) ... [2021-10-11 00:19:41,413 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:41" (1/1) ... [2021-10-11 00:19:41,433 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:19:41,435 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:19:41,435 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:19:41,435 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:19:41,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:41" (1/1) ... [2021-10-11 00:19:41,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:41" (1/1) ... [2021-10-11 00:19:41,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:41" (1/1) ... [2021-10-11 00:19:41,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:41" (1/1) ... [2021-10-11 00:19:41,454 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:41" (1/1) ... [2021-10-11 00:19:41,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:41" (1/1) ... [2021-10-11 00:19:41,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:41" (1/1) ... [2021-10-11 00:19:41,460 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:19:41,461 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:19:41,461 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:19:41,462 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:19:41,463 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:41" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c079ec-69aa-480c-b98c-87d701fe5297/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:19:41,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:19:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:19:41,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 00:19:41,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:19:41,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:19:41,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 00:19:41,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 00:19:41,865 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:19:41,878 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-11 00:19:41,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:19:41 BoogieIcfgContainer [2021-10-11 00:19:41,880 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:19:41,882 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:19:41,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:19:41,891 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:19:41,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:19:41" (1/3) ... [2021-10-11 00:19:41,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58cbad3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:19:41, skipping insertion in model container [2021-10-11 00:19:41,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:41" (2/3) ... [2021-10-11 00:19:41,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58cbad3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:19:41, skipping insertion in model container [2021-10-11 00:19:41,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:19:41" (3/3) ... [2021-10-11 00:19:41,896 INFO L111 eAbstractionObserver]: Analyzing ICFG nested_structure_noptr-1.i [2021-10-11 00:19:41,919 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:19:41,927 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 00:19:41,942 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 00:19:41,966 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:19:41,967 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:19:41,967 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:19:41,967 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:19:41,967 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:19:41,968 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:19:41,968 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:19:41,968 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:19:41,985 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2021-10-11 00:19:41,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 00:19:41,992 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:19:41,993 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 00:19:41,994 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:19:42,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:19:42,002 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2021-10-11 00:19:42,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:19:42,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088895273] [2021-10-11 00:19:42,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:19:42,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:19:42,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:19:42,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088895273] [2021-10-11 00:19:42,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:19:42,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:19:42,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575803108] [2021-10-11 00:19:42,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:19:42,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:19:42,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:19:42,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:19:42,366 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2021-10-11 00:19:42,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:19:42,402 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2021-10-11 00:19:42,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:19:42,404 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2021-10-11 00:19:42,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:19:42,411 INFO L225 Difference]: With dead ends: 13 [2021-10-11 00:19:42,412 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 00:19:42,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:19:42,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 00:19:42,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 00:19:42,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 00:19:42,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 00:19:42,445 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2021-10-11 00:19:42,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:19:42,445 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:19:42,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:19:42,446 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 00:19:42,446 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 00:19:42,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:19:42,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 00:19:42,466 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 00:19:42,466 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-11 00:19:42,466 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 00:19:42,467 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-11 00:19:42,467 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2021-10-11 00:19:42,467 INFO L262 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2021-10-11 00:19:42,467 INFO L262 CegarLoopResult]: For program point L14(lines 14 16) no Hoare annotation was computed. [2021-10-11 00:19:42,468 INFO L258 CegarLoopResult]: At program point L14-2(lines 13 18) the Hoare annotation is: (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) [2021-10-11 00:19:42,468 INFO L258 CegarLoopResult]: At program point L43(lines 38 44) the Hoare annotation is: (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) [2021-10-11 00:19:42,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:19:42 BoogieIcfgContainer [2021-10-11 00:19:42,487 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:19:42,488 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:19:42,488 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:19:42,488 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:19:42,489 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:19:41" (3/4) ... [2021-10-11 00:19:42,493 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 00:19:42,506 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-11 00:19:42,511 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 00:19:42,511 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 00:19:42,512 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 00:19:42,575 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78c079ec-69aa-480c-b98c-87d701fe5297/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:19:42,579 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:19:42,581 INFO L168 Benchmark]: Toolchain (without parser) took 1507.31 ms. Allocated memory is still 142.6 MB. Free memory was 110.9 MB in the beginning and 84.9 MB in the end (delta: 25.9 MB). Peak memory consumption was 24.2 MB. Max. memory is 16.1 GB. [2021-10-11 00:19:42,582 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 86.0 MB. Free memory was 42.3 MB in the beginning and 42.2 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:19:42,583 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.50 ms. Allocated memory is still 142.6 MB. Free memory was 110.6 MB in the beginning and 119.6 MB in the end (delta: -9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:19:42,584 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.12 ms. Allocated memory is still 142.6 MB. Free memory was 119.6 MB in the beginning and 118.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:19:42,586 INFO L168 Benchmark]: Boogie Preprocessor took 25.48 ms. Allocated memory is still 142.6 MB. Free memory was 118.0 MB in the beginning and 117.0 MB in the end (delta: 984.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:19:42,587 INFO L168 Benchmark]: RCFGBuilder took 419.32 ms. Allocated memory is still 142.6 MB. Free memory was 117.0 MB in the beginning and 106.4 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 00:19:42,587 INFO L168 Benchmark]: TraceAbstraction took 604.61 ms. Allocated memory is still 142.6 MB. Free memory was 105.9 MB in the beginning and 87.0 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-11 00:19:42,589 INFO L168 Benchmark]: Witness Printer took 91.35 ms. Allocated memory is still 142.6 MB. Free memory was 87.0 MB in the beginning and 84.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:19:42,599 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 86.0 MB. Free memory was 42.3 MB in the beginning and 42.2 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 316.50 ms. Allocated memory is still 142.6 MB. Free memory was 110.6 MB in the beginning and 119.6 MB in the end (delta: -9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.12 ms. Allocated memory is still 142.6 MB. Free memory was 119.6 MB in the beginning and 118.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.48 ms. Allocated memory is still 142.6 MB. Free memory was 118.0 MB in the beginning and 117.0 MB in the end (delta: 984.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 419.32 ms. Allocated memory is still 142.6 MB. Free memory was 117.0 MB in the beginning and 106.4 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 604.61 ms. Allocated memory is still 142.6 MB. Free memory was 105.9 MB in the beginning and 87.0 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * Witness Printer took 91.35 ms. Allocated memory is still 142.6 MB. Free memory was 87.0 MB in the beginning and 84.9 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: - PositiveResult [Line: 15]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: !(0 == cond) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: !(0 == cond) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5 SDtfs, 4 SDslu, 1 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 8 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 18 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 correct! Received shutdown request...