./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/sum_array-1.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_7b6f2487-8694-46b9-9e35-794fd04d643a/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6f2487-8694-46b9-9e35-794fd04d643a/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_7b6f2487-8694-46b9-9e35-794fd04d643a/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6f2487-8694-46b9-9e35-794fd04d643a/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/sum_array-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6f2487-8694-46b9-9e35-794fd04d643a/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_7b6f2487-8694-46b9-9e35-794fd04d643a/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 729bcf7bc8da07a9502e2c955dd21c14a257521f .............................................................................................................................................................................................................................................................................................................. 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 02:22:53,881 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:22:53,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:22:53,928 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:22:53,929 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:22:53,930 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:22:53,932 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:22:53,934 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:22:53,937 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:22:53,938 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:22:53,939 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:22:53,941 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:22:53,942 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:22:53,943 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:22:53,944 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:22:53,946 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:22:53,947 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:22:53,948 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:22:53,950 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:22:53,953 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:22:53,955 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:22:53,957 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:22:53,958 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:22:53,959 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:22:53,963 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:22:53,963 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:22:53,964 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:22:53,965 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:22:53,966 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:22:53,967 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:22:53,967 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:22:53,969 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:22:53,970 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:22:53,971 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:22:53,972 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:22:53,973 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:22:53,974 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:22:53,974 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:22:53,974 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:22:53,975 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:22:53,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:22:53,977 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6f2487-8694-46b9-9e35-794fd04d643a/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:22:53,999 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:22:53,999 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:22:54,000 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:22:54,000 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:22:54,001 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:22:54,001 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:22:54,001 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:22:54,002 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:22:54,002 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:22:54,010 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:22:54,010 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:22:54,011 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:22:54,011 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:22:54,011 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:22:54,012 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:22:54,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:22:54,013 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:22:54,013 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:22:54,014 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:22:54,014 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:22:54,014 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:22:54,015 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:22:54,015 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:22:54,015 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:22:54,015 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:22:54,016 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:22:54,016 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:22:54,016 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:22:54,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:22:54,017 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:22:54,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:22:54,018 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:22:54,018 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:22:54,018 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:22:54,019 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:22:54,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:22:54,019 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:22:54,020 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:22:54,020 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:22:54,020 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_7b6f2487-8694-46b9-9e35-794fd04d643a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6f2487-8694-46b9-9e35-794fd04d643a/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 729bcf7bc8da07a9502e2c955dd21c14a257521f [2021-10-11 02:22:54,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:22:54,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:22:54,280 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:22:54,282 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:22:54,283 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:22:54,284 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6f2487-8694-46b9-9e35-794fd04d643a/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/loops/sum_array-1.c [2021-10-11 02:22:54,337 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6f2487-8694-46b9-9e35-794fd04d643a/bin/utaipan-WLngWcDbfI/data/db1327bd2/4744d25f3c7e4d29a19dd9910a3d0c1b/FLAGa3b764d0f [2021-10-11 02:22:54,780 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:22:54,780 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6f2487-8694-46b9-9e35-794fd04d643a/sv-benchmarks/c/loops/sum_array-1.c [2021-10-11 02:22:54,786 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6f2487-8694-46b9-9e35-794fd04d643a/bin/utaipan-WLngWcDbfI/data/db1327bd2/4744d25f3c7e4d29a19dd9910a3d0c1b/FLAGa3b764d0f [2021-10-11 02:22:55,176 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6f2487-8694-46b9-9e35-794fd04d643a/bin/utaipan-WLngWcDbfI/data/db1327bd2/4744d25f3c7e4d29a19dd9910a3d0c1b [2021-10-11 02:22:55,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:22:55,180 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:22:55,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:22:55,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:22:55,185 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:22:55,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:22:55" (1/1) ... [2021-10-11 02:22:55,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3347ad89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:55, skipping insertion in model container [2021-10-11 02:22:55,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:22:55" (1/1) ... [2021-10-11 02:22:55,195 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:22:55,219 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:22:55,398 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_7b6f2487-8694-46b9-9e35-794fd04d643a/sv-benchmarks/c/loops/sum_array-1.c[363,376] [2021-10-11 02:22:55,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:22:55,427 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:22:55,437 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_7b6f2487-8694-46b9-9e35-794fd04d643a/sv-benchmarks/c/loops/sum_array-1.c[363,376] [2021-10-11 02:22:55,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:22:55,460 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:22:55,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:55 WrapperNode [2021-10-11 02:22:55,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:22:55,462 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:22:55,462 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:22:55,462 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:22:55,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:55" (1/1) ... [2021-10-11 02:22:55,477 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:55" (1/1) ... [2021-10-11 02:22:55,512 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:22:55,513 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:22:55,513 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:22:55,514 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:22:55,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:55" (1/1) ... [2021-10-11 02:22:55,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:55" (1/1) ... [2021-10-11 02:22:55,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:55" (1/1) ... [2021-10-11 02:22:55,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:55" (1/1) ... [2021-10-11 02:22:55,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:55" (1/1) ... [2021-10-11 02:22:55,541 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:55" (1/1) ... [2021-10-11 02:22:55,543 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:55" (1/1) ... [2021-10-11 02:22:55,546 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:22:55,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:22:55,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:22:55,547 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:22:55,548 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:55" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6f2487-8694-46b9-9e35-794fd04d643a/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 02:22:55,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:22:55,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:22:55,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:22:55,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:22:55,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:22:55,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 02:22:55,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:22:56,022 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:22:56,022 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-11 02:22:56,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:56 BoogieIcfgContainer [2021-10-11 02:22:56,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:22:56,026 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:22:56,040 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:22:56,044 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:22:56,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:22:55" (1/3) ... [2021-10-11 02:22:56,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@649cecb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:22:56, skipping insertion in model container [2021-10-11 02:22:56,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:55" (2/3) ... [2021-10-11 02:22:56,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@649cecb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:22:56, skipping insertion in model container [2021-10-11 02:22:56,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:56" (3/3) ... [2021-10-11 02:22:56,047 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_array-1.c [2021-10-11 02:22:56,059 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:22:56,063 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:22:56,074 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:22:56,096 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:22:56,096 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:22:56,096 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:22:56,096 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:22:56,096 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:22:56,096 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:22:56,096 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:22:56,097 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:22:56,108 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2021-10-11 02:22:56,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:22:56,113 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:56,113 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:56,113 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:56,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:56,119 INFO L82 PathProgramCache]: Analyzing trace with hash 270252141, now seen corresponding path program 1 times [2021-10-11 02:22:56,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:56,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793276978] [2021-10-11 02:22:56,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:56,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:56,517 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 02:22:56,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793276978] [2021-10-11 02:22:56,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:56,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:22:56,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176787679] [2021-10-11 02:22:56,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:22:56,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:56,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:22:56,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:22:56,552 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 5 states. [2021-10-11 02:22:56,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:56,678 INFO L93 Difference]: Finished difference Result 30 states and 44 transitions. [2021-10-11 02:22:56,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:22:56,681 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2021-10-11 02:22:56,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:56,691 INFO L225 Difference]: With dead ends: 30 [2021-10-11 02:22:56,692 INFO L226 Difference]: Without dead ends: 17 [2021-10-11 02:22:56,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:22:56,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-11 02:22:56,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 12. [2021-10-11 02:22:56,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-11 02:22:56,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2021-10-11 02:22:56,731 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 15 transitions. Word has length 7 [2021-10-11 02:22:56,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:56,731 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 15 transitions. [2021-10-11 02:22:56,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:22:56,732 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 15 transitions. [2021-10-11 02:22:56,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:22:56,733 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:56,733 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:56,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:22:56,734 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:56,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:56,738 INFO L82 PathProgramCache]: Analyzing trace with hash -745557134, now seen corresponding path program 1 times [2021-10-11 02:22:56,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:56,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918691651] [2021-10-11 02:22:56,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:22:56,871 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:22:56,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:22:56,940 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:22:56,965 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:22:56,965 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:22:56,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:22:57,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:22:57 BoogieIcfgContainer [2021-10-11 02:22:57,017 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:22:57,018 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:22:57,018 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:22:57,018 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:22:57,020 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:56" (3/4) ... [2021-10-11 02:22:57,022 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:22:57,091 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b6f2487-8694-46b9-9e35-794fd04d643a/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:22:57,092 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:22:57,093 INFO L168 Benchmark]: Toolchain (without parser) took 1912.50 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 59.5 MB in the beginning and 70.1 MB in the end (delta: -10.6 MB). Peak memory consumption was 9.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:57,094 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 100.7 MB. Free memory is still 75.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:22:57,094 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.41 ms. Allocated memory is still 100.7 MB. Free memory was 59.2 MB in the beginning and 76.9 MB in the end (delta: -17.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:57,095 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.41 ms. Allocated memory is still 100.7 MB. Free memory was 76.9 MB in the beginning and 75.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:57,095 INFO L168 Benchmark]: Boogie Preprocessor took 33.01 ms. Allocated memory is still 100.7 MB. Free memory was 75.0 MB in the beginning and 74.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:57,095 INFO L168 Benchmark]: RCFGBuilder took 477.88 ms. Allocated memory is still 100.7 MB. Free memory was 73.7 MB in the beginning and 50.1 MB in the end (delta: 23.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:57,096 INFO L168 Benchmark]: TraceAbstraction took 990.81 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 49.6 MB in the beginning and 72.2 MB in the end (delta: -22.6 MB). Peak memory consumption was 518.4 kB. Max. memory is 16.1 GB. [2021-10-11 02:22:57,097 INFO L168 Benchmark]: Witness Printer took 73.89 ms. Allocated memory is still 121.6 MB. Free memory was 72.2 MB in the beginning and 70.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:57,099 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 100.7 MB. Free memory is still 75.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 279.41 ms. Allocated memory is still 100.7 MB. Free memory was 59.2 MB in the beginning and 76.9 MB in the end (delta: -17.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.41 ms. Allocated memory is still 100.7 MB. Free memory was 76.9 MB in the beginning and 75.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.01 ms. Allocated memory is still 100.7 MB. Free memory was 75.0 MB in the beginning and 74.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 477.88 ms. Allocated memory is still 100.7 MB. Free memory was 73.7 MB in the beginning and 50.1 MB in the end (delta: 23.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 990.81 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 49.6 MB in the beginning and 72.2 MB in the end (delta: -22.6 MB). Peak memory consumption was 518.4 kB. Max. memory is 16.1 GB. * Witness Printer took 73.89 ms. Allocated memory is still 121.6 MB. Free memory was 72.2 MB in the beginning and 70.1 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: - CounterExampleResult [Line: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L16] unsigned int M = __VERIFIER_nondet_uint(); [L17] int A[M], B[M], C[M]; [L18] unsigned int i; [L20] i=0 [L20] COND TRUE i