./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/sum_non_eq-2.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_59a31bf1-26ee-482b-a348-6ce460a29032/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a31bf1-26ee-482b-a348-6ce460a29032/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a31bf1-26ee-482b-a348-6ce460a29032/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a31bf1-26ee-482b-a348-6ce460a29032/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/sum_non_eq-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a31bf1-26ee-482b-a348-6ce460a29032/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a31bf1-26ee-482b-a348-6ce460a29032/bin/utaipan-WLngWcDbfI --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d08ec045f3070a7b4be2ee6fb5c0f639f90e227f ............................................................................................................................................................................................................................................................................................................................................................................. 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 02:30:54,147 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:30:54,149 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:30:54,182 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:30:54,183 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:30:54,188 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:30:54,190 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:30:54,194 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:30:54,197 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:30:54,203 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:30:54,204 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:30:54,205 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:30:54,206 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:30:54,209 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:30:54,211 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:30:54,213 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:30:54,215 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:30:54,219 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:30:54,221 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:30:54,227 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:30:54,234 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:30:54,235 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:30:54,237 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:30:54,238 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:30:54,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:30:54,242 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:30:54,242 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:30:54,243 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:30:54,244 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:30:54,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:30:54,245 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:30:54,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:30:54,247 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:30:54,248 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:30:54,250 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:30:54,250 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:30:54,251 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:30:54,251 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:30:54,251 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:30:54,252 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:30:54,253 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:30:54,254 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a31bf1-26ee-482b-a348-6ce460a29032/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:30:54,278 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:30:54,278 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:30:54,279 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:30:54,279 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:30:54,280 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:30:54,280 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:30:54,280 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:30:54,280 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:30:54,280 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:30:54,281 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:30:54,281 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:30:54,281 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:30:54,281 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:30:54,281 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:30:54,282 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:30:54,282 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:30:54,283 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:30:54,283 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:30:54,283 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:30:54,283 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:30:54,283 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:30:54,284 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:30:54,284 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:30:54,284 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:30:54,284 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:30:54,284 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:30:54,285 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:30:54,285 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:30:54,285 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:30:54,285 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:30:54,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:30:54,286 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:30:54,286 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:30:54,286 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:30:54,286 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:30:54,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:30:54,287 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:30:54,287 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:30:54,287 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:30:54,287 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_59a31bf1-26ee-482b-a348-6ce460a29032/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a31bf1-26ee-482b-a348-6ce460a29032/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d08ec045f3070a7b4be2ee6fb5c0f639f90e227f [2021-10-11 02:30:54,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:30:54,564 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:30:54,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:30:54,570 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:30:54,571 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:30:54,572 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a31bf1-26ee-482b-a348-6ce460a29032/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/recursive-simple/sum_non_eq-2.c [2021-10-11 02:30:54,646 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a31bf1-26ee-482b-a348-6ce460a29032/bin/utaipan-WLngWcDbfI/data/e5998def3/1b35ea5c31144906b4ba7278f82922f5/FLAGbb5064e6e [2021-10-11 02:30:55,115 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:30:55,115 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a31bf1-26ee-482b-a348-6ce460a29032/sv-benchmarks/c/recursive-simple/sum_non_eq-2.c [2021-10-11 02:30:55,126 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a31bf1-26ee-482b-a348-6ce460a29032/bin/utaipan-WLngWcDbfI/data/e5998def3/1b35ea5c31144906b4ba7278f82922f5/FLAGbb5064e6e [2021-10-11 02:30:55,519 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a31bf1-26ee-482b-a348-6ce460a29032/bin/utaipan-WLngWcDbfI/data/e5998def3/1b35ea5c31144906b4ba7278f82922f5 [2021-10-11 02:30:55,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:30:55,524 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:30:55,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:30:55,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:30:55,540 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:30:55,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:30:55" (1/1) ... [2021-10-11 02:30:55,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f1fce4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:55, skipping insertion in model container [2021-10-11 02:30:55,550 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:30:55" (1/1) ... [2021-10-11 02:30:55,558 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:30:55,571 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:30:55,727 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_59a31bf1-26ee-482b-a348-6ce460a29032/sv-benchmarks/c/recursive-simple/sum_non_eq-2.c[628,641] [2021-10-11 02:30:55,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:30:55,740 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:30:55,752 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_59a31bf1-26ee-482b-a348-6ce460a29032/sv-benchmarks/c/recursive-simple/sum_non_eq-2.c[628,641] [2021-10-11 02:30:55,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:30:55,766 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:30:55,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:55 WrapperNode [2021-10-11 02:30:55,767 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:30:55,768 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:30:55,768 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:30:55,768 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:30:55,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:55" (1/1) ... [2021-10-11 02:30:55,783 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:55" (1/1) ... [2021-10-11 02:30:55,794 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:30:55,795 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:30:55,795 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:30:55,796 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:30:55,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:55" (1/1) ... [2021-10-11 02:30:55,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:55" (1/1) ... [2021-10-11 02:30:55,805 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:55" (1/1) ... [2021-10-11 02:30:55,806 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:55" (1/1) ... [2021-10-11 02:30:55,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:55" (1/1) ... [2021-10-11 02:30:55,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:55" (1/1) ... [2021-10-11 02:30:55,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:55" (1/1) ... [2021-10-11 02:30:55,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:30:55,814 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:30:55,814 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:30:55,814 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:30:55,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:55" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a31bf1-26ee-482b-a348-6ce460a29032/bin/utaipan-WLngWcDbfI/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 02:30:55,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:30:55,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:30:55,893 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2021-10-11 02:30:55,894 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2021-10-11 02:30:55,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:30:55,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:30:56,133 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:30:56,133 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-11 02:30:56,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:30:56 BoogieIcfgContainer [2021-10-11 02:30:56,135 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:30:56,155 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:30:56,155 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:30:56,158 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:30:56,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:30:55" (1/3) ... [2021-10-11 02:30:56,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a57a4a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:30:56, skipping insertion in model container [2021-10-11 02:30:56,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:55" (2/3) ... [2021-10-11 02:30:56,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a57a4a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:30:56, skipping insertion in model container [2021-10-11 02:30:56,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:30:56" (3/3) ... [2021-10-11 02:30:56,161 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_non_eq-2.c [2021-10-11 02:30:56,174 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:30:56,177 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:30:56,188 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:30:56,211 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:30:56,211 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:30:56,211 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:30:56,211 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:30:56,211 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:30:56,211 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:30:56,211 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:30:56,212 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:30:56,225 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2021-10-11 02:30:56,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:30:56,238 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:56,239 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:56,240 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:56,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:56,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1493244868, now seen corresponding path program 1 times [2021-10-11 02:30:56,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:56,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79675832] [2021-10-11 02:30:56,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:56,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:56,660 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 02:30:56,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79675832] [2021-10-11 02:30:56,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:56,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 02:30:56,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108034541] [2021-10-11 02:30:56,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:30:56,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:56,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:30:56,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:30:56,683 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 6 states. [2021-10-11 02:30:56,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:56,796 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2021-10-11 02:30:56,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:30:56,798 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2021-10-11 02:30:56,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:56,807 INFO L225 Difference]: With dead ends: 24 [2021-10-11 02:30:56,807 INFO L226 Difference]: Without dead ends: 14 [2021-10-11 02:30:56,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:30:56,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-11 02:30:56,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-11 02:30:56,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-11 02:30:56,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-10-11 02:30:56,843 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2021-10-11 02:30:56,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:56,844 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-10-11 02:30:56,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:30:56,844 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-10-11 02:30:56,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 02:30:56,845 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:56,845 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:56,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:30:56,846 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:56,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:56,847 INFO L82 PathProgramCache]: Analyzing trace with hash -642736818, now seen corresponding path program 1 times [2021-10-11 02:30:56,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:56,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271694158] [2021-10-11 02:30:56,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:56,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:57,144 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:30:57,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271694158] [2021-10-11 02:30:57,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986336016] [2021-10-11 02:30:57,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a31bf1-26ee-482b-a348-6ce460a29032/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:30:57,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:57,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-11 02:30:57,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:30:57,590 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:30:57,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:30:57,979 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:30:58,205 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:30:58,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1421015320] [2021-10-11 02:30:58,241 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-10-11 02:30:58,242 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:30:58,251 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-11 02:30:58,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:30:58,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 16 [2021-10-11 02:30:58,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235057587] [2021-10-11 02:30:58,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-10-11 02:30:58,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:58,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-11 02:30:58,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-10-11 02:30:58,262 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 16 states. [2021-10-11 02:30:58,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:58,542 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-10-11 02:30:58,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-11 02:30:58,544 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 15 [2021-10-11 02:30:58,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:58,544 INFO L225 Difference]: With dead ends: 19 [2021-10-11 02:30:58,545 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:30:58,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 7 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2021-10-11 02:30:58,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:30:58,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:30:58,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:30:58,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:30:58,547 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-10-11 02:30:58,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:58,547 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:30:58,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-10-11 02:30:58,547 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:30:58,547 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:30:58,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-11 02:30:58,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:30:58,787 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:30:58,787 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:30:58,788 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:30:58,788 INFO L262 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2021-10-11 02:30:58,788 INFO L262 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:30:58,788 INFO L265 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: true [2021-10-11 02:30:58,788 INFO L262 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2021-10-11 02:30:58,788 INFO L262 CegarLoopResult]: For program point L14(lines 14 21) no Hoare annotation was computed. [2021-10-11 02:30:58,789 INFO L262 CegarLoopResult]: For program point sumEXIT(lines 6 12) no Hoare annotation was computed. [2021-10-11 02:30:58,789 INFO L258 CegarLoopResult]: At program point L10(line 10) the Hoare annotation is: (and (= sum_~n |sum_#in~n|) (< (* 4294967296 (div sum_~n 4294967296)) sum_~n) (= sum_~m |sum_#in~m|)) [2021-10-11 02:30:58,789 INFO L262 CegarLoopResult]: For program point L10-1(line 10) no Hoare annotation was computed. [2021-10-11 02:30:58,789 INFO L262 CegarLoopResult]: For program point L7(lines 7 11) no Hoare annotation was computed. [2021-10-11 02:30:58,789 INFO L262 CegarLoopResult]: For program point sumFINAL(lines 6 12) no Hoare annotation was computed. [2021-10-11 02:30:58,789 INFO L265 CegarLoopResult]: At program point sumENTRY(lines 6 12) the Hoare annotation is: true [2021-10-11 02:30:58,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:30:58 BoogieIcfgContainer [2021-10-11 02:30:58,794 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:30:58,795 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:30:58,795 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:30:58,795 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:30:58,796 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:30:56" (3/4) ... [2021-10-11 02:30:58,799 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:30:58,806 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure sum [2021-10-11 02:30:58,812 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-10-11 02:30:58,812 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-11 02:30:58,813 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:30:58,813 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:30:58,867 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a31bf1-26ee-482b-a348-6ce460a29032/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:30:58,867 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:30:58,869 INFO L168 Benchmark]: Toolchain (without parser) took 3344.35 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 73.7 MB in the beginning and 84.1 MB in the end (delta: -10.4 MB). Peak memory consumption was 13.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:58,870 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 115.3 MB. Free memory was 90.5 MB in the beginning and 90.4 MB in the end (delta: 66.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:30:58,870 INFO L168 Benchmark]: CACSL2BoogieTranslator took 230.98 ms. Allocated memory is still 115.3 MB. Free memory was 73.5 MB in the beginning and 90.7 MB in the end (delta: -17.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:58,871 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.82 ms. Allocated memory is still 115.3 MB. Free memory was 90.7 MB in the beginning and 89.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:58,871 INFO L168 Benchmark]: Boogie Preprocessor took 17.60 ms. Allocated memory is still 115.3 MB. Free memory was 89.4 MB in the beginning and 88.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:30:58,872 INFO L168 Benchmark]: RCFGBuilder took 321.87 ms. Allocated memory is still 115.3 MB. Free memory was 88.4 MB in the beginning and 75.5 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:58,872 INFO L168 Benchmark]: TraceAbstraction took 2639.31 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 75.0 MB in the beginning and 86.2 MB in the end (delta: -11.2 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:58,873 INFO L168 Benchmark]: Witness Printer took 72.88 ms. Allocated memory is still 138.4 MB. Free memory was 86.2 MB in the beginning and 84.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:58,881 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 115.3 MB. Free memory was 90.5 MB in the beginning and 90.4 MB in the end (delta: 66.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 230.98 ms. Allocated memory is still 115.3 MB. Free memory was 73.5 MB in the beginning and 90.7 MB in the end (delta: -17.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 26.82 ms. Allocated memory is still 115.3 MB. Free memory was 90.7 MB in the beginning and 89.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.60 ms. Allocated memory is still 115.3 MB. Free memory was 89.4 MB in the beginning and 88.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 321.87 ms. Allocated memory is still 115.3 MB. Free memory was 88.4 MB in the beginning and 75.5 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2639.31 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 75.0 MB in the beginning and 86.2 MB in the end (delta: -11.2 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. * Witness Printer took 72.88 ms. Allocated memory is still 138.4 MB. Free memory was 86.2 MB in the beginning and 84.1 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: 19]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.5s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 14 SDslu, 45 SDs, 0 SdLazy, 114 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 19 SyntacticMatches, 7 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 16 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 8852 SizeOfPredicates, 9 NumberOfNonLiveVariables, 68 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 5/12 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...