./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/array-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca07ce6-7493-4a42-896f-765393a59580/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca07ce6-7493-4a42-896f-765393a59580/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca07ce6-7493-4a42-896f-765393a59580/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca07ce6-7493-4a42-896f-765393a59580/bin/utaipan-tZwUujhuQw/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/array-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca07ce6-7493-4a42-896f-765393a59580/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca07ce6-7493-4a42-896f-765393a59580/bin/utaipan-tZwUujhuQw --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 8df294a242896c5bf5c0de59a6565bdcc2051c441282e921edcd2c4fccba4c24 ...................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-20 05:23:10,813 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 05:23:10,815 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 05:23:10,867 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 05:23:10,868 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 05:23:10,869 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 05:23:10,872 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 05:23:10,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 05:23:10,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 05:23:10,880 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 05:23:10,881 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 05:23:10,883 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 05:23:10,884 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 05:23:10,886 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 05:23:10,889 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 05:23:10,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 05:23:10,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 05:23:10,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 05:23:10,897 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 05:23:10,901 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 05:23:10,904 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 05:23:10,906 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 05:23:10,908 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 05:23:10,910 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 05:23:10,915 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 05:23:10,915 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 05:23:10,916 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 05:23:10,918 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 05:23:10,918 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 05:23:10,920 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 05:23:10,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 05:23:10,922 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 05:23:10,923 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 05:23:10,925 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 05:23:10,926 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 05:23:10,927 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 05:23:10,928 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 05:23:10,929 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 05:23:10,929 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 05:23:10,931 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 05:23:10,932 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 05:23:10,933 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca07ce6-7493-4a42-896f-765393a59580/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-20 05:23:10,961 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 05:23:10,962 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 05:23:10,963 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 05:23:10,963 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 05:23:10,964 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 05:23:10,964 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 05:23:10,965 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-20 05:23:10,965 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 05:23:10,966 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 05:23:10,966 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-20 05:23:10,967 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-20 05:23:10,967 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 05:23:10,967 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-20 05:23:10,968 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-20 05:23:10,968 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-20 05:23:10,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 05:23:10,970 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 05:23:10,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 05:23:10,971 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 05:23:10,971 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 05:23:10,972 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-20 05:23:10,972 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 05:23:10,972 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-20 05:23:10,973 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 05:23:10,973 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 05:23:10,974 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-20 05:23:10,974 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 05:23:10,975 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-20 05:23:10,975 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 05:23:10,975 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 05:23:10,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:23:10,976 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 05:23:10,977 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 05:23:10,977 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-20 05:23:10,977 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-20 05:23:10,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-20 05:23:10,978 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-20 05:23:10,978 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 05:23:10,978 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 05:23:10,978 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_4ca07ce6-7493-4a42-896f-765393a59580/bin/utaipan-tZwUujhuQw/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca07ce6-7493-4a42-896f-765393a59580/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8df294a242896c5bf5c0de59a6565bdcc2051c441282e921edcd2c4fccba4c24 [2021-10-20 05:23:11,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 05:23:11,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 05:23:11,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 05:23:11,285 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 05:23:11,286 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 05:23:11,287 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca07ce6-7493-4a42-896f-765393a59580/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/loops/array-2.c [2021-10-20 05:23:11,360 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca07ce6-7493-4a42-896f-765393a59580/bin/utaipan-tZwUujhuQw/data/c03d7c769/97be840e8f6344b0b27db0997141b370/FLAGe8ceb38da [2021-10-20 05:23:11,864 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 05:23:11,864 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca07ce6-7493-4a42-896f-765393a59580/sv-benchmarks/c/loops/array-2.c [2021-10-20 05:23:11,871 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca07ce6-7493-4a42-896f-765393a59580/bin/utaipan-tZwUujhuQw/data/c03d7c769/97be840e8f6344b0b27db0997141b370/FLAGe8ceb38da [2021-10-20 05:23:12,259 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca07ce6-7493-4a42-896f-765393a59580/bin/utaipan-tZwUujhuQw/data/c03d7c769/97be840e8f6344b0b27db0997141b370 [2021-10-20 05:23:12,262 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 05:23:12,267 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 05:23:12,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 05:23:12,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 05:23:12,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 05:23:12,277 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:23:12" (1/1) ... [2021-10-20 05:23:12,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29ec18d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:23:12, skipping insertion in model container [2021-10-20 05:23:12,279 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:23:12" (1/1) ... [2021-10-20 05:23:12,286 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 05:23:12,299 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 05:23:12,429 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca07ce6-7493-4a42-896f-765393a59580/sv-benchmarks/c/loops/array-2.c[319,332] [2021-10-20 05:23:12,461 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:23:12,471 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 05:23:12,486 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca07ce6-7493-4a42-896f-765393a59580/sv-benchmarks/c/loops/array-2.c[319,332] [2021-10-20 05:23:12,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:23:12,524 INFO L208 MainTranslator]: Completed translation [2021-10-20 05:23:12,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:23:12 WrapperNode [2021-10-20 05:23:12,525 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 05:23:12,527 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 05:23:12,527 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 05:23:12,527 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 05:23:12,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:23:12" (1/1) ... [2021-10-20 05:23:12,546 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:23:12" (1/1) ... [2021-10-20 05:23:12,587 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 05:23:12,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 05:23:12,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 05:23:12,589 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 05:23:12,599 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:23:12" (1/1) ... [2021-10-20 05:23:12,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:23:12" (1/1) ... [2021-10-20 05:23:12,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:23:12" (1/1) ... [2021-10-20 05:23:12,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:23:12" (1/1) ... [2021-10-20 05:23:12,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:23:12" (1/1) ... [2021-10-20 05:23:12,623 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:23:12" (1/1) ... [2021-10-20 05:23:12,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:23:12" (1/1) ... [2021-10-20 05:23:12,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 05:23:12,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 05:23:12,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 05:23:12,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 05:23:12,638 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:23:12" (1/1) ... [2021-10-20 05:23:12,647 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:23:12,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca07ce6-7493-4a42-896f-765393a59580/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:23:12,677 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca07ce6-7493-4a42-896f-765393a59580/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 05:23:12,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca07ce6-7493-4a42-896f-765393a59580/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 05:23:12,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-20 05:23:12,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 05:23:12,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-20 05:23:12,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 05:23:12,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 05:23:12,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-20 05:23:12,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-20 05:23:13,055 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 05:23:13,055 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-20 05:23:13,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:23:13 BoogieIcfgContainer [2021-10-20 05:23:13,058 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 05:23:13,059 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 05:23:13,059 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 05:23:13,063 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 05:23:13,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:23:12" (1/3) ... [2021-10-20 05:23:13,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26600e1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:23:13, skipping insertion in model container [2021-10-20 05:23:13,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:23:12" (2/3) ... [2021-10-20 05:23:13,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26600e1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:23:13, skipping insertion in model container [2021-10-20 05:23:13,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:23:13" (3/3) ... [2021-10-20 05:23:13,066 INFO L111 eAbstractionObserver]: Analyzing ICFG array-2.c [2021-10-20 05:23:13,072 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 05:23:13,072 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-20 05:23:13,124 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 05:23:13,132 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-20 05:23:13,132 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-20 05:23:13,147 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:23:13,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-20 05:23:13,152 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:23:13,152 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-20 05:23:13,153 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:23:13,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:23:13,159 INFO L82 PathProgramCache]: Analyzing trace with hash 2064998, now seen corresponding path program 1 times [2021-10-20 05:23:13,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:23:13,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280631030] [2021-10-20 05:23:13,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:23:13,171 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:23:13,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:23:13,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:23:13,459 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:23:13,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280631030] [2021-10-20 05:23:13,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280631030] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:23:13,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:23:13,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-20 05:23:13,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328914173] [2021-10-20 05:23:13,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 05:23:13,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:23:13,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 05:23:13,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:23:13,486 INFO L87 Difference]: Start difference. First operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:23:13,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:23:13,510 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2021-10-20 05:23:13,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:23:13,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-20 05:23:13,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:23:13,521 INFO L225 Difference]: With dead ends: 13 [2021-10-20 05:23:13,522 INFO L226 Difference]: Without dead ends: 6 [2021-10-20 05:23:13,524 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:23:13,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2021-10-20 05:23:13,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2021-10-20 05:23:13,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:23:13,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2021-10-20 05:23:13,556 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2021-10-20 05:23:13,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:23:13,557 INFO L470 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2021-10-20 05:23:13,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:23:13,558 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2021-10-20 05:23:13,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-20 05:23:13,558 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:23:13,558 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-20 05:23:13,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-20 05:23:13,559 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:23:13,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:23:13,560 INFO L82 PathProgramCache]: Analyzing trace with hash 64119651, now seen corresponding path program 1 times [2021-10-20 05:23:13,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:23:13,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449246563] [2021-10-20 05:23:13,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:23:13,562 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:23:13,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 05:23:13,605 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-20 05:23:13,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 05:23:13,701 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-20 05:23:13,701 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-20 05:23:13,703 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 05:23:13,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-20 05:23:13,719 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 05:23:13,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:23:13 BoogieIcfgContainer [2021-10-20 05:23:13,736 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 05:23:13,737 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 05:23:13,737 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 05:23:13,738 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 05:23:13,738 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:23:13" (3/4) ... [2021-10-20 05:23:13,741 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-20 05:23:13,776 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ca07ce6-7493-4a42-896f-765393a59580/bin/utaipan-tZwUujhuQw/witness.graphml [2021-10-20 05:23:13,776 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 05:23:13,778 INFO L168 Benchmark]: Toolchain (without parser) took 1510.48 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 80.9 MB in the beginning and 65.6 MB in the end (delta: 15.3 MB). Peak memory consumption was 36.7 MB. Max. memory is 16.1 GB. [2021-10-20 05:23:13,779 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 111.1 MB. Free memory is still 66.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:23:13,780 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.95 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 80.9 MB in the beginning and 110.2 MB in the end (delta: -29.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-20 05:23:13,780 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.62 ms. Allocated memory is still 134.2 MB. Free memory was 110.2 MB in the beginning and 108.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:23:13,781 INFO L168 Benchmark]: Boogie Preprocessor took 38.33 ms. Allocated memory is still 134.2 MB. Free memory was 108.5 MB in the beginning and 107.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:23:13,782 INFO L168 Benchmark]: RCFGBuilder took 430.51 ms. Allocated memory is still 134.2 MB. Free memory was 107.4 MB in the beginning and 94.0 MB in the end (delta: 13.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-20 05:23:13,782 INFO L168 Benchmark]: TraceAbstraction took 677.32 ms. Allocated memory is still 134.2 MB. Free memory was 93.4 MB in the beginning and 67.3 MB in the end (delta: 26.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-20 05:23:13,783 INFO L168 Benchmark]: Witness Printer took 39.34 ms. Allocated memory is still 134.2 MB. Free memory was 67.3 MB in the beginning and 65.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:23:13,786 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 111.1 MB. Free memory is still 66.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 252.95 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 80.9 MB in the beginning and 110.2 MB in the end (delta: -29.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.62 ms. Allocated memory is still 134.2 MB. Free memory was 110.2 MB in the beginning and 108.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.33 ms. Allocated memory is still 134.2 MB. Free memory was 108.5 MB in the beginning and 107.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 430.51 ms. Allocated memory is still 134.2 MB. Free memory was 107.4 MB in the beginning and 94.0 MB in the end (delta: 13.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 677.32 ms. Allocated memory is still 134.2 MB. Free memory was 93.4 MB in the beginning and 67.3 MB in the end (delta: 26.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * Witness Printer took 39.34 ms. Allocated memory is still 134.2 MB. Free memory was 67.3 MB in the beginning and 65.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 7]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L15] unsigned int SIZE=1; [L16] unsigned int j,k; [L17] int array[SIZE], menor; [L19] menor = __VERIFIER_nondet_int() [L21] j=0 [L21] COND TRUE j