./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 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_64514633-7136-4e81-a38f-4fca56741baa/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_64514633-7136-4e81-a38f-4fca56741baa/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_64514633-7136-4e81-a38f-4fca56741baa/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_64514633-7136-4e81-a38f-4fca56741baa/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_64514633-7136-4e81-a38f-4fca56741baa/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_64514633-7136-4e81-a38f-4fca56741baa/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 0.2.0-7b2dab5 [2020-12-03 12:35:48,181 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 12:35:48,185 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 12:35:48,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 12:35:48,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 12:35:48,257 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 12:35:48,260 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 12:35:48,264 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 12:35:48,267 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 12:35:48,275 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 12:35:48,276 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 12:35:48,278 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 12:35:48,278 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 12:35:48,282 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 12:35:48,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 12:35:48,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 12:35:48,286 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 12:35:48,291 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 12:35:48,295 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 12:35:48,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 12:35:48,304 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 12:35:48,306 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 12:35:48,308 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 12:35:48,309 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 12:35:48,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 12:35:48,314 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 12:35:48,314 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 12:35:48,316 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 12:35:48,317 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 12:35:48,318 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 12:35:48,319 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 12:35:48,320 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 12:35:48,322 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 12:35:48,323 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 12:35:48,324 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 12:35:48,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 12:35:48,325 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 12:35:48,326 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 12:35:48,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 12:35:48,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 12:35:48,328 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 12:35:48,330 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_64514633-7136-4e81-a38f-4fca56741baa/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-03 12:35:48,371 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 12:35:48,372 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 12:35:48,373 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-03 12:35:48,373 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-03 12:35:48,374 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-03 12:35:48,374 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-03 12:35:48,374 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-03 12:35:48,374 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-03 12:35:48,374 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-03 12:35:48,375 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-03 12:35:48,376 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-03 12:35:48,376 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-03 12:35:48,376 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-03 12:35:48,377 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-03 12:35:48,377 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-03 12:35:48,378 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 12:35:48,378 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-03 12:35:48,378 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-03 12:35:48,378 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-03 12:35:48,379 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 12:35:48,379 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-03 12:35:48,379 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 12:35:48,379 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-03 12:35:48,380 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-03 12:35:48,380 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-03 12:35:48,380 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-03 12:35:48,380 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 12:35:48,380 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-03 12:35:48,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 12:35:48,382 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-03 12:35:48,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:35:48,383 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 12:35:48,383 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 12:35:48,383 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-03 12:35:48,384 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-03 12:35:48,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-03 12:35:48,384 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-03 12:35:48,384 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-03 12:35:48,385 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-03 12:35:48,385 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_64514633-7136-4e81-a38f-4fca56741baa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_64514633-7136-4e81-a38f-4fca56741baa/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa8518504ad5bdbba4b684c7b502fc3d056fb054 [2020-12-03 12:35:48,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 12:35:48,720 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 12:35:48,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 12:35:48,725 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 12:35:48,726 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 12:35:48,727 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_64514633-7136-4e81-a38f-4fca56741baa/bin/utaipan/../../sv-benchmarks/c/loop-crafted/simple_array_index_value_1-2.i [2020-12-03 12:35:48,831 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_64514633-7136-4e81-a38f-4fca56741baa/bin/utaipan/data/80e94992e/c3ea063ba70b43f59fd3eb30e99ba63d/FLAG42af385ac [2020-12-03 12:35:49,289 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 12:35:49,290 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_64514633-7136-4e81-a38f-4fca56741baa/sv-benchmarks/c/loop-crafted/simple_array_index_value_1-2.i [2020-12-03 12:35:49,296 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_64514633-7136-4e81-a38f-4fca56741baa/bin/utaipan/data/80e94992e/c3ea063ba70b43f59fd3eb30e99ba63d/FLAG42af385ac [2020-12-03 12:35:49,670 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_64514633-7136-4e81-a38f-4fca56741baa/bin/utaipan/data/80e94992e/c3ea063ba70b43f59fd3eb30e99ba63d [2020-12-03 12:35:49,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 12:35:49,674 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-03 12:35:49,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 12:35:49,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 12:35:49,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 12:35:49,683 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:35:49" (1/1) ... [2020-12-03 12:35:49,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7029e50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:49, skipping insertion in model container [2020-12-03 12:35:49,687 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:35:49" (1/1) ... [2020-12-03 12:35:49,695 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 12:35:49,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 12:35:49,891 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_64514633-7136-4e81-a38f-4fca56741baa/sv-benchmarks/c/loop-crafted/simple_array_index_value_1-2.i[921,934] [2020-12-03 12:35:49,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:35:49,911 INFO L203 MainTranslator]: Completed pre-run [2020-12-03 12:35:49,924 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_64514633-7136-4e81-a38f-4fca56741baa/sv-benchmarks/c/loop-crafted/simple_array_index_value_1-2.i[921,934] [2020-12-03 12:35:49,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:35:49,944 INFO L208 MainTranslator]: Completed translation [2020-12-03 12:35:49,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:49 WrapperNode [2020-12-03 12:35:49,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 12:35:49,946 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-03 12:35:49,946 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-03 12:35:49,946 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-03 12:35:49,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:49" (1/1) ... [2020-12-03 12:35:49,959 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:49" (1/1) ... [2020-12-03 12:35:49,976 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-03 12:35:49,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-03 12:35:49,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-03 12:35:49,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-03 12:35:49,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:49" (1/1) ... [2020-12-03 12:35:49,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:49" (1/1) ... [2020-12-03 12:35:49,987 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:49" (1/1) ... [2020-12-03 12:35:49,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:49" (1/1) ... [2020-12-03 12:35:49,992 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:49" (1/1) ... [2020-12-03 12:35:49,996 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:49" (1/1) ... [2020-12-03 12:35:49,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:49" (1/1) ... [2020-12-03 12:35:49,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-03 12:35:50,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-03 12:35:50,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-03 12:35:50,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-03 12:35:50,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_64514633-7136-4e81-a38f-4fca56741baa/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 [2020-12-03 12:35:50,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-03 12:35:50,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-03 12:35:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-03 12:35:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-03 12:35:50,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-03 12:35:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-03 12:35:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-03 12:35:50,486 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-03 12:35:50,487 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-03 12:35:50,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:35:50 BoogieIcfgContainer [2020-12-03 12:35:50,489 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-03 12:35:50,490 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-03 12:35:50,491 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-03 12:35:50,515 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-03 12:35:50,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 12:35:49" (1/3) ... [2020-12-03 12:35:50,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4811339 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:35:50, skipping insertion in model container [2020-12-03 12:35:50,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:49" (2/3) ... [2020-12-03 12:35:50,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4811339 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:35:50, skipping insertion in model container [2020-12-03 12:35:50,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:35:50" (3/3) ... [2020-12-03 12:35:50,519 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_1-2.i [2020-12-03 12:35:50,533 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-03 12:35:50,536 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-03 12:35:50,562 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-03 12:35:50,601 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-03 12:35:50,601 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-03 12:35:50,601 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-03 12:35:50,601 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-03 12:35:50,601 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-03 12:35:50,602 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-03 12:35:50,602 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-03 12:35:50,602 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-03 12:35:50,614 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-12-03 12:35:50,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-03 12:35:50,619 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:35:50,619 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-03 12:35:50,620 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:35:50,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:35:50,625 INFO L82 PathProgramCache]: Analyzing trace with hash 68804718, now seen corresponding path program 1 times [2020-12-03 12:35:50,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:35:50,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090428885] [2020-12-03 12:35:50,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:35:50,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:35:50,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:35:50,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090428885] [2020-12-03 12:35:50,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:35:50,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-03 12:35:50,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505386058] [2020-12-03 12:35:50,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-03 12:35:50,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:35:50,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-03 12:35:50,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-03 12:35:50,813 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 2 states. [2020-12-03 12:35:50,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:35:50,827 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2020-12-03 12:35:50,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-03 12:35:50,828 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-12-03 12:35:50,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:35:50,836 INFO L225 Difference]: With dead ends: 15 [2020-12-03 12:35:50,836 INFO L226 Difference]: Without dead ends: 7 [2020-12-03 12:35:50,839 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 [2020-12-03 12:35:50,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2020-12-03 12:35:50,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-12-03 12:35:50,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-12-03 12:35:50,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2020-12-03 12:35:50,871 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2020-12-03 12:35:50,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:35:50,871 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2020-12-03 12:35:50,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-03 12:35:50,871 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2020-12-03 12:35:50,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-03 12:35:50,872 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:35:50,872 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-03 12:35:50,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-03 12:35:50,875 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:35:50,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:35:50,878 INFO L82 PathProgramCache]: Analyzing trace with hash 2100550918, now seen corresponding path program 1 times [2020-12-03 12:35:50,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:35:50,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976235578] [2020-12-03 12:35:50,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:35:50,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-03 12:35:50,977 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-03 12:35:51,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-03 12:35:51,035 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-03 12:35:51,062 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-03 12:35:51,062 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-03 12:35:51,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-03 12:35:51,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 12:35:51 BoogieIcfgContainer [2020-12-03 12:35:51,094 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-03 12:35:51,095 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-03 12:35:51,095 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-03 12:35:51,095 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-03 12:35:51,097 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:35:50" (3/4) ... [2020-12-03 12:35:51,099 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-03 12:35:51,159 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_64514633-7136-4e81-a38f-4fca56741baa/bin/utaipan/witness.graphml [2020-12-03 12:35:51,160 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-03 12:35:51,162 INFO L168 Benchmark]: Toolchain (without parser) took 1487.00 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 51.7 MB in the beginning and 65.2 MB in the end (delta: -13.5 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:51,163 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 83.9 MB. Free memory was 42.5 MB in the beginning and 42.4 MB in the end (delta: 75.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:35:51,164 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.28 ms. Allocated memory is still 83.9 MB. Free memory was 51.6 MB in the beginning and 60.8 MB in the end (delta: -9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:51,167 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.73 ms. Allocated memory is still 83.9 MB. Free memory was 60.8 MB in the beginning and 59.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:51,170 INFO L168 Benchmark]: Boogie Preprocessor took 22.03 ms. Allocated memory is still 83.9 MB. Free memory was 59.3 MB in the beginning and 58.3 MB in the end (delta: 957.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:35:51,170 INFO L168 Benchmark]: RCFGBuilder took 489.20 ms. Allocated memory is still 83.9 MB. Free memory was 58.3 MB in the beginning and 41.5 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:51,171 INFO L168 Benchmark]: TraceAbstraction took 604.01 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 41.1 MB in the beginning and 66.7 MB in the end (delta: -25.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:35:51,172 INFO L168 Benchmark]: Witness Printer took 64.89 ms. Allocated memory is still 100.7 MB. Free memory was 66.7 MB in the beginning and 65.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:51,175 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 83.9 MB. Free memory was 42.5 MB in the beginning and 42.4 MB in the end (delta: 75.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 266.28 ms. Allocated memory is still 83.9 MB. Free memory was 51.6 MB in the beginning and 60.8 MB in the end (delta: -9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.73 ms. Allocated memory is still 83.9 MB. Free memory was 60.8 MB in the beginning and 59.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.03 ms. Allocated memory is still 83.9 MB. Free memory was 59.3 MB in the beginning and 58.3 MB in the end (delta: 957.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 489.20 ms. Allocated memory is still 83.9 MB. Free memory was 58.3 MB in the beginning and 41.5 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 604.01 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 41.1 MB in the beginning and 66.7 MB in the end (delta: -25.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 64.89 ms. Allocated memory is still 100.7 MB. Free memory was 66.7 MB in the beginning and 65.2 MB in the end (delta: 1.6 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: 26]: a call to reach_error is reachable a call to reach_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) [L26] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 9 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=9occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 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...