./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-crafted/simple_array_index_value_1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_9297be30-853d-4a9c-b661-4bf9c3d5b7ad/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9297be30-853d-4a9c-b661-4bf9c3d5b7ad/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9297be30-853d-4a9c-b661-4bf9c3d5b7ad/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9297be30-853d-4a9c-b661-4bf9c3d5b7ad/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-crafted/simple_array_index_value_1-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_9297be30-853d-4a9c-b661-4bf9c3d5b7ad/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9297be30-853d-4a9c-b661-4bf9c3d5b7ad/bin/utaipan --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 fa8518504ad5bdbba4b684c7b502fc3d056fb054 .............................................................................................................................................................................................................................................................................................. 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-a4ecdab [2020-11-22 13:06:56,729 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:06:56,733 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:06:56,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:06:56,790 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:06:56,797 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:06:56,800 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:06:56,808 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:06:56,812 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:06:56,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:06:56,822 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:06:56,823 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:06:56,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:06:56,825 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:06:56,826 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:06:56,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:06:56,829 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:06:56,836 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:06:56,840 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:06:56,845 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:06:56,847 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:06:56,850 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:06:56,853 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:06:56,854 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:06:56,859 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:06:56,860 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:06:56,860 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:06:56,862 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:06:56,863 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:06:56,864 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:06:56,864 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:06:56,866 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:06:56,868 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:06:56,869 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:06:56,871 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:06:56,871 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:06:56,872 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:06:56,872 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:06:56,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:06:56,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:06:56,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:06:56,877 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9297be30-853d-4a9c-b661-4bf9c3d5b7ad/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:06:56,920 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:06:56,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:06:56,922 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:06:56,923 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:06:56,923 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:06:56,923 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:06:56,923 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:06:56,924 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:06:56,924 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:06:56,924 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:06:56,925 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:06:56,926 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:06:56,926 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:06:56,926 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:06:56,926 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:06:56,927 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:06:56,927 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:06:56,927 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:06:56,928 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:06:56,928 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:06:56,928 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:06:56,928 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:06:56,929 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:06:56,929 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:06:56,929 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:06:56,929 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:06:56,929 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:06:56,930 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:06:56,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:06:56,931 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:06:56,932 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:06:56,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:06:56,932 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:06:56,933 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:06:56,933 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:06:56,933 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:06:56,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:06:56,934 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:06:56,934 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:06:56,934 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:06:56,934 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-vcloud-master/worker/run_dir_9297be30-853d-4a9c-b661-4bf9c3d5b7ad/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9297be30-853d-4a9c-b661-4bf9c3d5b7ad/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa8518504ad5bdbba4b684c7b502fc3d056fb054 [2020-11-22 13:06:57,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:06:57,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:06:57,250 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:06:57,252 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:06:57,253 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:06:57,254 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9297be30-853d-4a9c-b661-4bf9c3d5b7ad/bin/utaipan/../../sv-benchmarks/c/loop-crafted/simple_array_index_value_1-2.i [2020-11-22 13:06:57,346 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9297be30-853d-4a9c-b661-4bf9c3d5b7ad/bin/utaipan/data/c044ebc3a/23af21a0a8044122a4ec10ab95859227/FLAGfa37eb57d [2020-11-22 13:06:57,945 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:06:57,946 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9297be30-853d-4a9c-b661-4bf9c3d5b7ad/sv-benchmarks/c/loop-crafted/simple_array_index_value_1-2.i [2020-11-22 13:06:57,958 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9297be30-853d-4a9c-b661-4bf9c3d5b7ad/bin/utaipan/data/c044ebc3a/23af21a0a8044122a4ec10ab95859227/FLAGfa37eb57d [2020-11-22 13:06:58,277 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9297be30-853d-4a9c-b661-4bf9c3d5b7ad/bin/utaipan/data/c044ebc3a/23af21a0a8044122a4ec10ab95859227 [2020-11-22 13:06:58,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:06:58,286 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:06:58,290 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:06:58,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:06:58,295 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:06:58,297 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:06:58" (1/1) ... [2020-11-22 13:06:58,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48d3aa55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:58, skipping insertion in model container [2020-11-22 13:06:58,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:06:58" (1/1) ... [2020-11-22 13:06:58,309 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:06:58,330 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:06:58,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:06:58,592 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:06:58,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:06:58,628 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:06:58,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:58 WrapperNode [2020-11-22 13:06:58,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:06:58,630 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:06:58,631 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:06:58,631 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:06:58,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:58" (1/1) ... [2020-11-22 13:06:58,646 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:58" (1/1) ... [2020-11-22 13:06:58,664 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:06:58,665 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:06:58,665 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:06:58,665 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:06:58,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:58" (1/1) ... [2020-11-22 13:06:58,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:58" (1/1) ... [2020-11-22 13:06:58,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:58" (1/1) ... [2020-11-22 13:06:58,675 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:58" (1/1) ... [2020-11-22 13:06:58,679 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:58" (1/1) ... [2020-11-22 13:06:58,682 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:58" (1/1) ... [2020-11-22 13:06:58,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:58" (1/1) ... [2020-11-22 13:06:58,685 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:06:58,686 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:06:58,686 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:06:58,687 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:06:58,687 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9297be30-853d-4a9c-b661-4bf9c3d5b7ad/bin/utaipan/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 [2020-11-22 13:06:58,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:06:58,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:06:58,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-22 13:06:58,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:06:58,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:06:58,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-22 13:06:58,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 13:06:59,195 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:06:59,195 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-22 13:06:59,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:59 BoogieIcfgContainer [2020-11-22 13:06:59,197 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:06:59,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:06:59,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:06:59,203 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:06:59,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:06:58" (1/3) ... [2020-11-22 13:06:59,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4053ea4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:06:59, skipping insertion in model container [2020-11-22 13:06:59,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:58" (2/3) ... [2020-11-22 13:06:59,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4053ea4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:06:59, skipping insertion in model container [2020-11-22 13:06:59,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:59" (3/3) ... [2020-11-22 13:06:59,207 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_1-2.i [2020-11-22 13:06:59,219 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:06:59,224 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 13:06:59,237 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 13:06:59,263 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:06:59,263 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:06:59,263 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:06:59,264 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:06:59,264 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:06:59,264 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:06:59,264 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:06:59,265 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:06:59,278 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-11-22 13:06:59,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-22 13:06:59,284 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:59,285 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-22 13:06:59,285 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:59,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:59,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1924387648, now seen corresponding path program 1 times [2020-11-22 13:06:59,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:59,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212275176] [2020-11-22 13:06:59,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:59,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:59,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:59,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212275176] [2020-11-22 13:06:59,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:59,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:06:59,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918196195] [2020-11-22 13:06:59,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 13:06:59,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:59,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 13:06:59,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:06:59,458 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2020-11-22 13:06:59,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:59,471 INFO L93 Difference]: Finished difference Result 18 states and 22 transitions. [2020-11-22 13:06:59,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 13:06:59,473 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-11-22 13:06:59,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:59,480 INFO L225 Difference]: With dead ends: 18 [2020-11-22 13:06:59,481 INFO L226 Difference]: Without dead ends: 8 [2020-11-22 13:06:59,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:06:59,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-11-22 13:06:59,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-11-22 13:06:59,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-22 13:06:59,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-11-22 13:06:59,515 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2020-11-22 13:06:59,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:59,515 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-11-22 13:06:59,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 13:06:59,516 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-11-22 13:06:59,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-22 13:06:59,516 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:59,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:59,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:06:59,517 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:59,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:59,518 INFO L82 PathProgramCache]: Analyzing trace with hash -797047633, now seen corresponding path program 1 times [2020-11-22 13:06:59,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:59,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350256807] [2020-11-22 13:06:59,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:59,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:06:59,564 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:06:59,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:06:59,591 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:06:59,612 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-22 13:06:59,612 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:06:59,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 13:06:59,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:06:59 BoogieIcfgContainer [2020-11-22 13:06:59,637 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:06:59,638 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:06:59,638 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:06:59,639 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:06:59,639 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:59" (3/4) ... [2020-11-22 13:06:59,641 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-22 13:06:59,679 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9297be30-853d-4a9c-b661-4bf9c3d5b7ad/bin/utaipan/witness.graphml [2020-11-22 13:06:59,679 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:06:59,681 INFO L168 Benchmark]: Toolchain (without parser) took 1394.41 ms. Allocated memory is still 111.1 MB. Free memory was 76.6 MB in the beginning and 45.8 MB in the end (delta: 30.8 MB). Peak memory consumption was 28.6 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:59,681 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 111.1 MB. Free memory was 82.2 MB in the beginning and 82.1 MB in the end (delta: 30.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:06:59,682 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.27 ms. Allocated memory is still 111.1 MB. Free memory was 76.4 MB in the beginning and 87.7 MB in the end (delta: -11.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:59,683 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.42 ms. Allocated memory is still 111.1 MB. Free memory was 87.7 MB in the beginning and 86.8 MB in the end (delta: 982.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:59,683 INFO L168 Benchmark]: Boogie Preprocessor took 20.89 ms. Allocated memory is still 111.1 MB. Free memory was 86.8 MB in the beginning and 85.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:06:59,684 INFO L168 Benchmark]: RCFGBuilder took 511.05 ms. Allocated memory is still 111.1 MB. Free memory was 85.2 MB in the beginning and 68.4 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:59,685 INFO L168 Benchmark]: TraceAbstraction took 438.79 ms. Allocated memory is still 111.1 MB. Free memory was 67.9 MB in the beginning and 47.9 MB in the end (delta: 20.0 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:59,685 INFO L168 Benchmark]: Witness Printer took 40.84 ms. Allocated memory is still 111.1 MB. Free memory was 47.5 MB in the beginning and 45.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:59,689 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 111.1 MB. Free memory was 82.2 MB in the beginning and 82.1 MB in the end (delta: 30.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 339.27 ms. Allocated memory is still 111.1 MB. Free memory was 76.4 MB in the beginning and 87.7 MB in the end (delta: -11.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.42 ms. Allocated memory is still 111.1 MB. Free memory was 87.7 MB in the beginning and 86.8 MB in the end (delta: 982.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.89 ms. Allocated memory is still 111.1 MB. Free memory was 86.8 MB in the beginning and 85.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 511.05 ms. Allocated memory is still 111.1 MB. Free memory was 85.2 MB in the beginning and 68.4 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 438.79 ms. Allocated memory is still 111.1 MB. Free memory was 67.9 MB in the beginning and 47.9 MB in the end (delta: 20.0 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * Witness Printer took 40.84 ms. Allocated memory is still 111.1 MB. Free memory was 47.5 MB in the beginning and 45.8 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: - CounterExampleResult [Line: 18]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L35] unsigned int array[10000]; [L36] unsigned int index = 0; [L37] unsigned int tmp = 0; [L39] COND TRUE 1 [L40] index = __VERIFIER_nondet_uint() [L41] COND TRUE index >= 10000 [L48] tmp < 10000 && array[tmp] == tmp [L48] EXPR array[tmp] [L48] tmp < 10000 && array[tmp] == tmp [L25] COND TRUE !(cond) [L18] COND FALSE !(0) [L18] __assert_fail ("0", "simple_array_index_value_1-2.c", 7, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...