./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/sum_non_eq-3.c --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_daf4a835-6984-4b48-95d1-f06876be0bdc/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4a835-6984-4b48-95d1-f06876be0bdc/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_daf4a835-6984-4b48-95d1-f06876be0bdc/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4a835-6984-4b48-95d1-f06876be0bdc/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/sum_non_eq-3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4a835-6984-4b48-95d1-f06876be0bdc/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_daf4a835-6984-4b48-95d1-f06876be0bdc/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 dc04fce906329492e3413e1cbd244ef3e7ee3457 ............................................................................................................................................................................................................................................ 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 0.2.0-7b2dab5 [2021-10-11 00:32:17,016 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:32:17,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:32:17,078 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:32:17,078 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:32:17,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:32:17,081 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:32:17,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:32:17,087 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:32:17,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:32:17,089 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:32:17,090 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:32:17,091 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:32:17,092 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:32:17,094 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:32:17,095 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:32:17,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:32:17,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:32:17,099 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:32:17,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:32:17,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:32:17,109 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:32:17,110 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:32:17,111 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:32:17,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:32:17,115 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:32:17,115 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:32:17,116 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:32:17,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:32:17,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:32:17,118 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:32:17,119 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:32:17,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:32:17,121 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:32:17,123 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:32:17,123 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:32:17,124 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:32:17,124 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:32:17,125 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:32:17,126 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:32:17,127 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:32:17,128 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4a835-6984-4b48-95d1-f06876be0bdc/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-11 00:32:17,151 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:32:17,151 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:32:17,153 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:32:17,153 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:32:17,153 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:32:17,153 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:32:17,154 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:32:17,154 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:32:17,154 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:32:17,154 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:32:17,154 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:32:17,155 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:32:17,155 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:32:17,155 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:32:17,155 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:32:17,155 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:32:17,156 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:32:17,156 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:32:17,156 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:32:17,156 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:32:17,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:32:17,157 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:32:17,157 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:32:17,157 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:32:17,157 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:32:17,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:32:17,158 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:32:17,158 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:32:17,158 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_daf4a835-6984-4b48-95d1-f06876be0bdc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4a835-6984-4b48-95d1-f06876be0bdc/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc04fce906329492e3413e1cbd244ef3e7ee3457 [2021-10-11 00:32:17,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:32:17,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:32:17,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:32:17,431 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:32:17,432 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:32:17,434 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4a835-6984-4b48-95d1-f06876be0bdc/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/recursive-simple/sum_non_eq-3.c [2021-10-11 00:32:17,496 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4a835-6984-4b48-95d1-f06876be0bdc/bin/uautomizer-Z5i5R5N3CC/data/f16a19689/a8fd7bec18194c938a9aa46fc596d99a/FLAG6bb06916b [2021-10-11 00:32:18,043 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:32:18,044 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4a835-6984-4b48-95d1-f06876be0bdc/sv-benchmarks/c/recursive-simple/sum_non_eq-3.c [2021-10-11 00:32:18,055 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4a835-6984-4b48-95d1-f06876be0bdc/bin/uautomizer-Z5i5R5N3CC/data/f16a19689/a8fd7bec18194c938a9aa46fc596d99a/FLAG6bb06916b [2021-10-11 00:32:18,394 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4a835-6984-4b48-95d1-f06876be0bdc/bin/uautomizer-Z5i5R5N3CC/data/f16a19689/a8fd7bec18194c938a9aa46fc596d99a [2021-10-11 00:32:18,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:32:18,399 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:32:18,401 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:32:18,401 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:32:18,405 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:32:18,406 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:32:18" (1/1) ... [2021-10-11 00:32:18,409 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2debd9e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:18, skipping insertion in model container [2021-10-11 00:32:18,409 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:32:18" (1/1) ... [2021-10-11 00:32:18,418 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:32:18,432 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:32:18,676 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_daf4a835-6984-4b48-95d1-f06876be0bdc/sv-benchmarks/c/recursive-simple/sum_non_eq-3.c[628,641] [2021-10-11 00:32:18,688 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:32:18,704 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:32:18,716 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_daf4a835-6984-4b48-95d1-f06876be0bdc/sv-benchmarks/c/recursive-simple/sum_non_eq-3.c[628,641] [2021-10-11 00:32:18,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:32:18,732 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:32:18,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:18 WrapperNode [2021-10-11 00:32:18,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:32:18,737 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:32:18,737 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:32:18,739 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:32:18,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:18" (1/1) ... [2021-10-11 00:32:18,761 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:18" (1/1) ... [2021-10-11 00:32:18,780 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:32:18,781 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:32:18,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:32:18,781 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:32:18,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:18" (1/1) ... [2021-10-11 00:32:18,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:18" (1/1) ... [2021-10-11 00:32:18,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:18" (1/1) ... [2021-10-11 00:32:18,790 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:18" (1/1) ... [2021-10-11 00:32:18,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:18" (1/1) ... [2021-10-11 00:32:18,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:18" (1/1) ... [2021-10-11 00:32:18,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:18" (1/1) ... [2021-10-11 00:32:18,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:32:18,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:32:18,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:32:18,798 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:32:18,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:18" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4a835-6984-4b48-95d1-f06876be0bdc/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 00:32:18,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:32:18,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:32:18,889 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2021-10-11 00:32:18,889 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2021-10-11 00:32:18,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:32:18,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:32:19,098 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:32:19,098 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-11 00:32:19,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:32:19 BoogieIcfgContainer [2021-10-11 00:32:19,119 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:32:19,121 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:32:19,121 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:32:19,125 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:32:19,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:32:18" (1/3) ... [2021-10-11 00:32:19,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a89bcaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:32:19, skipping insertion in model container [2021-10-11 00:32:19,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:18" (2/3) ... [2021-10-11 00:32:19,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a89bcaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:32:19, skipping insertion in model container [2021-10-11 00:32:19,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:32:19" (3/3) ... [2021-10-11 00:32:19,128 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_non_eq-3.c [2021-10-11 00:32:19,159 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:32:19,162 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 00:32:19,190 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 00:32:19,231 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:32:19,231 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:32:19,232 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:32:19,232 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:32:19,232 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:32:19,232 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:32:19,232 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:32:19,232 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:32:19,247 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2021-10-11 00:32:19,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 00:32:19,252 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:32:19,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:32:19,253 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:32:19,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:32:19,267 INFO L82 PathProgramCache]: Analyzing trace with hash -358017204, now seen corresponding path program 1 times [2021-10-11 00:32:19,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:32:19,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076401120] [2021-10-11 00:32:19,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:32:19,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:32:19,444 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:32:19,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:32:19,503 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:32:19,540 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:32:19,541 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 00:32:19,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:32:19,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:32:19 BoogieIcfgContainer [2021-10-11 00:32:19,588 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:32:19,592 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:32:19,592 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:32:19,592 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:32:19,593 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:32:19" (3/4) ... [2021-10-11 00:32:19,604 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 00:32:19,644 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daf4a835-6984-4b48-95d1-f06876be0bdc/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:32:19,644 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:32:19,646 INFO L168 Benchmark]: Toolchain (without parser) took 1246.28 ms. Allocated memory is still 140.5 MB. Free memory was 108.9 MB in the beginning and 86.7 MB in the end (delta: 22.2 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. [2021-10-11 00:32:19,647 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 83.9 MB. Free memory was 41.5 MB in the beginning and 41.4 MB in the end (delta: 39.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:32:19,647 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.04 ms. Allocated memory is still 140.5 MB. Free memory was 108.9 MB in the beginning and 115.7 MB in the end (delta: -6.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:32:19,648 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.85 ms. Allocated memory is still 140.5 MB. Free memory was 115.7 MB in the beginning and 114.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:32:19,649 INFO L168 Benchmark]: Boogie Preprocessor took 16.53 ms. Allocated memory is still 140.5 MB. Free memory was 114.4 MB in the beginning and 113.6 MB in the end (delta: 762.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:32:19,649 INFO L168 Benchmark]: RCFGBuilder took 321.64 ms. Allocated memory is still 140.5 MB. Free memory was 113.6 MB in the beginning and 101.8 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 00:32:19,650 INFO L168 Benchmark]: TraceAbstraction took 467.16 ms. Allocated memory is still 140.5 MB. Free memory was 101.4 MB in the beginning and 88.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 00:32:19,651 INFO L168 Benchmark]: Witness Printer took 52.25 ms. Allocated memory is still 140.5 MB. Free memory was 88.8 MB in the beginning and 86.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:32:19,654 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56 ms. Allocated memory is still 83.9 MB. Free memory was 41.5 MB in the beginning and 41.4 MB in the end (delta: 39.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 333.04 ms. Allocated memory is still 140.5 MB. Free memory was 108.9 MB in the beginning and 115.7 MB in the end (delta: -6.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.85 ms. Allocated memory is still 140.5 MB. Free memory was 115.7 MB in the beginning and 114.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 16.53 ms. Allocated memory is still 140.5 MB. Free memory was 114.4 MB in the beginning and 113.6 MB in the end (delta: 762.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 321.64 ms. Allocated memory is still 140.5 MB. Free memory was 113.6 MB in the beginning and 101.8 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 467.16 ms. Allocated memory is still 140.5 MB. Free memory was 101.4 MB in the beginning and 88.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 52.25 ms. Allocated memory is still 140.5 MB. Free memory was 88.8 MB in the beginning and 86.7 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: - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L15] unsigned int a = __VERIFIER_nondet_uint(); [L16] unsigned int b = __VERIFIER_nondet_uint(); [L17] CALL, EXPR sum(a, b) VAL [\old(m)=0, \old(n)=0] [L7] COND TRUE n == 0 [L8] return m; VAL [\old(m)=0, \old(n)=0, \result=0, m=0, n=0] [L17] RET, EXPR sum(a, b) [L17] unsigned int result = sum(a, b); [L18] COND TRUE result == a + b [L19] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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! Received shutdown request...