./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/verisec_NetBSD-libc_loop.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_d25e174c-895d-4afe-81ae-5b26efda3f25/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d25e174c-895d-4afe-81ae-5b26efda3f25/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d25e174c-895d-4afe-81ae-5b26efda3f25/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d25e174c-895d-4afe-81ae-5b26efda3f25/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/verisec_NetBSD-libc_loop.i -s /tmp/vcloud-vcloud-master/worker/run_dir_d25e174c-895d-4afe-81ae-5b26efda3f25/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d25e174c-895d-4afe-81ae-5b26efda3f25/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 e365d1f7c546788b4f6c8f402c5031aacc4ea6e6 ............................................................................................................................................................................................................................................................................................................................................................................ 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 [2020-11-28 07:26:46,727 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:26:46,730 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:26:46,787 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:26:46,788 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:26:46,796 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:26:46,799 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:26:46,802 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:26:46,805 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:26:46,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:26:46,812 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:26:46,814 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:26:46,814 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:26:46,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:26:46,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:26:46,821 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:26:46,822 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:26:46,826 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:26:46,829 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:26:46,836 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:26:46,838 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:26:46,840 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:26:46,842 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:26:46,843 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:26:46,852 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:26:46,853 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:26:46,853 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:26:46,856 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:26:46,857 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:26:46,858 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:26:46,858 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:26:46,860 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:26:46,862 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:26:46,863 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:26:46,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:26:46,865 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:26:46,866 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:26:46,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:26:46,867 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:26:46,868 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:26:46,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:26:46,874 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d25e174c-895d-4afe-81ae-5b26efda3f25/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:26:46,915 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:26:46,915 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:26:46,917 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:26:46,917 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:26:46,918 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:26:46,918 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:26:46,918 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:26:46,919 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:26:46,919 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:26:46,919 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:26:46,921 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:26:46,921 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:26:46,921 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:26:46,922 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:26:46,922 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:26:46,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:26:46,923 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:26:46,924 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:26:46,924 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:26:46,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:26:46,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:26:46,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:26:46,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:26:46,925 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:26:46,926 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:26:46,926 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:26:46,926 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:26:46,927 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:26:46,927 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:26:46,927 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:26:46,928 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:26:46,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:26:46,929 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:26:46,929 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:26:46,929 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:26:46,930 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:26:46,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:26:46,930 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:26:46,931 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:26:46,931 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:26:46,931 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_d25e174c-895d-4afe-81ae-5b26efda3f25/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d25e174c-895d-4afe-81ae-5b26efda3f25/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e365d1f7c546788b4f6c8f402c5031aacc4ea6e6 [2020-11-28 07:26:47,217 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:26:47,263 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:26:47,265 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:26:47,266 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:26:47,267 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:26:47,268 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d25e174c-895d-4afe-81ae-5b26efda3f25/bin/utaipan/../../sv-benchmarks/c/loops/verisec_NetBSD-libc_loop.i [2020-11-28 07:26:47,340 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d25e174c-895d-4afe-81ae-5b26efda3f25/bin/utaipan/data/0e9965022/a533f4ae02d141cdbb57614b6d76937d/FLAG47ae46ec7 [2020-11-28 07:26:47,795 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:26:47,796 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d25e174c-895d-4afe-81ae-5b26efda3f25/sv-benchmarks/c/loops/verisec_NetBSD-libc_loop.i [2020-11-28 07:26:47,809 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d25e174c-895d-4afe-81ae-5b26efda3f25/bin/utaipan/data/0e9965022/a533f4ae02d141cdbb57614b6d76937d/FLAG47ae46ec7 [2020-11-28 07:26:48,177 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d25e174c-895d-4afe-81ae-5b26efda3f25/bin/utaipan/data/0e9965022/a533f4ae02d141cdbb57614b6d76937d [2020-11-28 07:26:48,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:26:48,182 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:26:48,189 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:26:48,190 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:26:48,193 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:26:48,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:26:48" (1/1) ... [2020-11-28 07:26:48,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d977fd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:26:48, skipping insertion in model container [2020-11-28 07:26:48,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:26:48" (1/1) ... [2020-11-28 07:26:48,203 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:26:48,218 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:26:48,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:26:48,394 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:26:48,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:26:48,443 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:26:48,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:26:48 WrapperNode [2020-11-28 07:26:48,445 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:26:48,446 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:26:48,447 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:26:48,447 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:26:48,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:26:48" (1/1) ... [2020-11-28 07:26:48,460 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:26:48" (1/1) ... [2020-11-28 07:26:48,477 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:26:48,478 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:26:48,478 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:26:48,478 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:26:48,486 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:26:48" (1/1) ... [2020-11-28 07:26:48,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:26:48" (1/1) ... [2020-11-28 07:26:48,489 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:26:48" (1/1) ... [2020-11-28 07:26:48,489 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:26:48" (1/1) ... [2020-11-28 07:26:48,494 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:26:48" (1/1) ... [2020-11-28 07:26:48,498 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:26:48" (1/1) ... [2020-11-28 07:26:48,499 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:26:48" (1/1) ... [2020-11-28 07:26:48,501 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:26:48,502 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:26:48,502 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:26:48,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:26:48,503 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:26:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d25e174c-895d-4afe-81ae-5b26efda3f25/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 [2020-11-28 07:26:48,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:26:48,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:26:48,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 07:26:48,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:26:48,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:26:48,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:26:48,921 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:26:48,921 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-11-28 07:26:48,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:26:48 BoogieIcfgContainer [2020-11-28 07:26:48,924 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:26:48,926 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:26:48,926 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:26:48,930 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:26:48,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:26:48" (1/3) ... [2020-11-28 07:26:48,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fa40dcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:26:48, skipping insertion in model container [2020-11-28 07:26:48,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:26:48" (2/3) ... [2020-11-28 07:26:48,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fa40dcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:26:48, skipping insertion in model container [2020-11-28 07:26:48,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:26:48" (3/3) ... [2020-11-28 07:26:48,933 INFO L111 eAbstractionObserver]: Analyzing ICFG verisec_NetBSD-libc_loop.i [2020-11-28 07:26:48,961 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:26:48,965 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:26:48,989 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:26:49,014 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:26:49,015 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:26:49,015 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:26:49,015 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:26:49,015 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:26:49,016 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:26:49,016 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:26:49,016 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:26:49,029 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-11-28 07:26:49,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 07:26:49,034 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:26:49,034 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 07:26:49,035 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:26:49,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:26:49,040 INFO L82 PathProgramCache]: Analyzing trace with hash 66833386, now seen corresponding path program 1 times [2020-11-28 07:26:49,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:26:49,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808466106] [2020-11-28 07:26:49,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:26:49,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:26:49,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:26:49,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808466106] [2020-11-28 07:26:49,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:26:49,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:26:49,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626704383] [2020-11-28 07:26:49,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:26:49,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:26:49,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:26:49,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:26:49,374 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 4 states. [2020-11-28 07:26:49,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:26:49,438 INFO L93 Difference]: Finished difference Result 20 states and 25 transitions. [2020-11-28 07:26:49,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:26:49,440 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-11-28 07:26:49,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:26:49,448 INFO L225 Difference]: With dead ends: 20 [2020-11-28 07:26:49,449 INFO L226 Difference]: Without dead ends: 10 [2020-11-28 07:26:49,451 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 [2020-11-28 07:26:49,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-28 07:26:49,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2020-11-28 07:26:49,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-28 07:26:49,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-11-28 07:26:49,482 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2020-11-28 07:26:49,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:26:49,483 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-11-28 07:26:49,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:26:49,483 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-11-28 07:26:49,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:26:49,484 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:26:49,484 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-11-28 07:26:49,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:26:49,485 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:26:49,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:26:49,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1998727478, now seen corresponding path program 1 times [2020-11-28 07:26:49,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:26:49,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743251213] [2020-11-28 07:26:49,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:26:49,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:26:49,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:26:49,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743251213] [2020-11-28 07:26:49,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57349959] [2020-11-28 07:26:49,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d25e174c-895d-4afe-81ae-5b26efda3f25/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:26:49,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:26:49,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-28 07:26:49,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:26:49,767 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 07:26:49,792 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:26:49,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:26:49,808 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:26:49,832 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:26:49,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:26:49,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1825989839] [2020-11-28 07:26:49,869 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-11-28 07:26:49,870 INFO L166 IcfgInterpreter]: Building call graph [2020-11-28 07:26:49,874 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-28 07:26:49,881 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-28 07:26:49,881 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-28 07:26:50,241 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-28 07:26:50,255 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-28 07:26:50,946 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-28 07:26:51,260 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2020-11-28 07:26:52,354 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 139 DAG size of output: 113 [2020-11-28 07:26:53,497 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 148 DAG size of output: 126 [2020-11-28 07:26:53,786 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2020-11-28 07:26:53,789 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:26:53,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-28 07:26:53,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2020-11-28 07:26:53,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892388704] [2020-11-28 07:26:53,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 07:26:53,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:26:53,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 07:26:53,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-11-28 07:26:53,792 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 7 states. [2020-11-28 07:26:53,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:26:53,884 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2020-11-28 07:26:53,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:26:53,886 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2020-11-28 07:26:53,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:26:53,886 INFO L225 Difference]: With dead ends: 17 [2020-11-28 07:26:53,887 INFO L226 Difference]: Without dead ends: 14 [2020-11-28 07:26:53,888 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-11-28 07:26:53,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-28 07:26:53,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2020-11-28 07:26:53,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-28 07:26:53,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-11-28 07:26:53,891 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2020-11-28 07:26:53,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:26:53,892 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-11-28 07:26:53,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 07:26:53,892 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-11-28 07:26:53,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:26:53,892 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:26:53,893 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2020-11-28 07:26:54,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-28 07:26:54,104 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:26:54,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:26:54,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1801111446, now seen corresponding path program 2 times [2020-11-28 07:26:54,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:26:54,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81984018] [2020-11-28 07:26:54,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:26:54,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:26:54,131 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:26:54,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:26:54,156 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:26:54,174 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:26:54,174 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:26:54,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-11-28 07:26:54,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:26:54 BoogieIcfgContainer [2020-11-28 07:26:54,204 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:26:54,205 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:26:54,205 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:26:54,205 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:26:54,206 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:26:48" (3/4) ... [2020-11-28 07:26:54,208 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:26:54,265 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d25e174c-895d-4afe-81ae-5b26efda3f25/bin/utaipan/witness.graphml [2020-11-28 07:26:54,265 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:26:54,266 INFO L168 Benchmark]: Toolchain (without parser) took 6083.75 ms. Allocated memory was 100.7 MB in the beginning and 176.2 MB in the end (delta: 75.5 MB). Free memory was 72.3 MB in the beginning and 126.0 MB in the end (delta: -53.8 MB). Peak memory consumption was 20.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:26:54,267 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 100.7 MB. Free memory is still 59.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:26:54,267 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.00 ms. Allocated memory is still 100.7 MB. Free memory was 72.0 MB in the beginning and 77.0 MB in the end (delta: -4.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:26:54,268 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.96 ms. Allocated memory is still 100.7 MB. Free memory was 77.0 MB in the beginning and 75.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:26:54,268 INFO L168 Benchmark]: Boogie Preprocessor took 23.12 ms. Allocated memory is still 100.7 MB. Free memory was 75.6 MB in the beginning and 74.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:26:54,268 INFO L168 Benchmark]: RCFGBuilder took 422.17 ms. Allocated memory is still 100.7 MB. Free memory was 74.4 MB in the beginning and 56.7 MB in the end (delta: 17.6 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-28 07:26:54,269 INFO L168 Benchmark]: TraceAbstraction took 5279.00 ms. Allocated memory was 100.7 MB in the beginning and 176.2 MB in the end (delta: 75.5 MB). Free memory was 56.3 MB in the beginning and 129.2 MB in the end (delta: -72.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:26:54,270 INFO L168 Benchmark]: Witness Printer took 60.25 ms. Allocated memory is still 176.2 MB. Free memory was 129.2 MB in the beginning and 126.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:26:54,272 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 100.7 MB. Free memory is still 59.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 257.00 ms. Allocated memory is still 100.7 MB. Free memory was 72.0 MB in the beginning and 77.0 MB in the end (delta: -4.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.96 ms. Allocated memory is still 100.7 MB. Free memory was 77.0 MB in the beginning and 75.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.12 ms. Allocated memory is still 100.7 MB. Free memory was 75.6 MB in the beginning and 74.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 422.17 ms. Allocated memory is still 100.7 MB. Free memory was 74.4 MB in the beginning and 56.7 MB in the end (delta: 17.6 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5279.00 ms. Allocated memory was 100.7 MB in the beginning and 176.2 MB in the end (delta: 75.5 MB). Free memory was 56.3 MB in the beginning and 129.2 MB in the end (delta: -72.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. * Witness Printer took 60.25 ms. Allocated memory is still 176.2 MB. Free memory was 129.2 MB in the beginning and 126.0 MB in the end (delta: 3.1 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: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L23] Char *tmp; [L40] Char pathbuf[1 +1]; [L42] Char *bound = pathbuf + sizeof(pathbuf) - 1; [L44] tmp = pathbuf + sizeof(pathbuf)/sizeof(*pathbuf) - 1 [L27] Char *p; [L29] p = pathbuf VAL [tmp={5:4}] [L29] COND TRUE p <= pathlim [L15] COND FALSE !(!(cond)) VAL [tmp={5:4}] [L32] *p = 1 [L29] p++ VAL [tmp={5:4}] [L29] COND TRUE p <= pathlim [L15] COND FALSE !(!(cond)) VAL [tmp={5:4}] [L32] *p = 1 [L29] p++ VAL [tmp={5:4}] [L29] COND TRUE p <= pathlim [L15] COND TRUE !(cond) [L12] COND FALSE !(0) VAL [tmp={5:4}] [L12] __assert_fail ("0", "verisec_NetBSD-libc_loop.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [tmp={5:4}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.1s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 14 SDslu, 18 SDs, 0 SdLazy, 22 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 911 SizeOfPredicates, 12 NumberOfNonLiveVariables, 83 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/6 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...