./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/veris.c_NetBSD-libc_loop.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6071811-5dd6-4ef5-8fb3-fbdf8e20060c/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6071811-5dd6-4ef5-8fb3-fbdf8e20060c/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6071811-5dd6-4ef5-8fb3-fbdf8e20060c/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6071811-5dd6-4ef5-8fb3-fbdf8e20060c/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/veris.c_NetBSD-libc_loop.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6071811-5dd6-4ef5-8fb3-fbdf8e20060c/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6071811-5dd6-4ef5-8fb3-fbdf8e20060c/bin/utaipan-TEXQjIfE4P --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 b1c73403384a361e15608c077b8e86297621fa69c42f15894e841079f64af74a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:16:26,088 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:16:26,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:16:26,153 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:16:26,153 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:16:26,159 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:16:26,161 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:16:26,166 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:16:26,169 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:16:26,177 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:16:26,178 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:16:26,179 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:16:26,180 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:16:26,181 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:16:26,182 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:16:26,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:16:26,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:16:26,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:16:26,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:16:26,200 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:16:26,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:16:26,203 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:16:26,211 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:16:26,212 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:16:26,216 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:16:26,216 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:16:26,217 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:16:26,219 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:16:26,219 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:16:26,221 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:16:26,221 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:16:26,222 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:16:26,224 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:16:26,225 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:16:26,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:16:26,227 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:16:26,227 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:16:26,228 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:16:26,228 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:16:26,229 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:16:26,230 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:16:26,231 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6071811-5dd6-4ef5-8fb3-fbdf8e20060c/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-20 23:16:26,277 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:16:26,277 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:16:26,278 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:16:26,278 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:16:26,279 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:16:26,285 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:16:26,286 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:16:26,286 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:16:26,286 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:16:26,286 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:16:26,288 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:16:26,288 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:16:26,288 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:16:26,288 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:16:26,288 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:16:26,289 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:16:26,289 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:16:26,289 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:16:26,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:16:26,291 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:16:26,291 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:16:26,291 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:16:26,291 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:16:26,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:16:26,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:16:26,292 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:16:26,294 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:16:26,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:16:26,294 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:16:26,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:16:26,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:16:26,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:16:26,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:16:26,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:16:26,296 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:16:26,296 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:16:26,296 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:16:26,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:16:26,297 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:16:26,297 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:16:26,297 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:16:26,297 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6071811-5dd6-4ef5-8fb3-fbdf8e20060c/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6071811-5dd6-4ef5-8fb3-fbdf8e20060c/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1c73403384a361e15608c077b8e86297621fa69c42f15894e841079f64af74a [2021-11-20 23:16:26,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:16:26,654 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:16:26,657 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:16:26,658 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:16:26,659 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:16:26,660 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6071811-5dd6-4ef5-8fb3-fbdf8e20060c/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/loops/veris.c_NetBSD-libc_loop.i [2021-11-20 23:16:26,726 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6071811-5dd6-4ef5-8fb3-fbdf8e20060c/bin/utaipan-TEXQjIfE4P/data/4cfc951a2/dabebae33e36478e8a721548519810af/FLAGc0f4853a9 [2021-11-20 23:16:27,187 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:16:27,188 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6071811-5dd6-4ef5-8fb3-fbdf8e20060c/sv-benchmarks/c/loops/veris.c_NetBSD-libc_loop.i [2021-11-20 23:16:27,194 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6071811-5dd6-4ef5-8fb3-fbdf8e20060c/bin/utaipan-TEXQjIfE4P/data/4cfc951a2/dabebae33e36478e8a721548519810af/FLAGc0f4853a9 [2021-11-20 23:16:27,563 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6071811-5dd6-4ef5-8fb3-fbdf8e20060c/bin/utaipan-TEXQjIfE4P/data/4cfc951a2/dabebae33e36478e8a721548519810af [2021-11-20 23:16:27,569 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:16:27,571 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:16:27,575 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:16:27,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:16:27,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:16:27,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:16:27" (1/1) ... [2021-11-20 23:16:27,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63cb6f6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:27, skipping insertion in model container [2021-11-20 23:16:27,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:16:27" (1/1) ... [2021-11-20 23:16:27,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:16:27,612 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:16:27,801 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6071811-5dd6-4ef5-8fb3-fbdf8e20060c/sv-benchmarks/c/loops/veris.c_NetBSD-libc_loop.i[825,838] [2021-11-20 23:16:27,834 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:16:27,844 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:16:27,862 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6071811-5dd6-4ef5-8fb3-fbdf8e20060c/sv-benchmarks/c/loops/veris.c_NetBSD-libc_loop.i[825,838] [2021-11-20 23:16:27,880 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:16:27,901 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:16:27,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:27 WrapperNode [2021-11-20 23:16:27,901 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:16:27,903 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:16:27,903 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:16:27,903 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:16:27,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:27" (1/1) ... [2021-11-20 23:16:27,925 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:27" (1/1) ... [2021-11-20 23:16:27,951 INFO L137 Inliner]: procedures = 16, calls = 12, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 43 [2021-11-20 23:16:27,951 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:16:27,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:16:27,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:16:27,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:16:27,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:27" (1/1) ... [2021-11-20 23:16:27,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:27" (1/1) ... [2021-11-20 23:16:27,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:27" (1/1) ... [2021-11-20 23:16:27,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:27" (1/1) ... [2021-11-20 23:16:27,984 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:27" (1/1) ... [2021-11-20 23:16:27,987 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:27" (1/1) ... [2021-11-20 23:16:27,988 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:27" (1/1) ... [2021-11-20 23:16:27,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:16:27,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:16:27,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:16:27,994 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:16:27,995 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:27" (1/1) ... [2021-11-20 23:16:28,002 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:16:28,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6071811-5dd6-4ef5-8fb3-fbdf8e20060c/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:16:28,029 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6071811-5dd6-4ef5-8fb3-fbdf8e20060c/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:16:28,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6071811-5dd6-4ef5-8fb3-fbdf8e20060c/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:16:28,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:16:28,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:16:28,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:16:28,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:16:28,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:16:28,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:16:28,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:16:28,155 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:16:28,157 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:16:28,304 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:16:28,329 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:16:28,330 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 23:16:28,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:16:28 BoogieIcfgContainer [2021-11-20 23:16:28,332 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:16:28,334 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:16:28,334 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:16:28,338 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:16:28,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:16:27" (1/3) ... [2021-11-20 23:16:28,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d72d2ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:16:28, skipping insertion in model container [2021-11-20 23:16:28,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:27" (2/3) ... [2021-11-20 23:16:28,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d72d2ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:16:28, skipping insertion in model container [2021-11-20 23:16:28,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:16:28" (3/3) ... [2021-11-20 23:16:28,341 INFO L111 eAbstractionObserver]: Analyzing ICFG veris.c_NetBSD-libc_loop.i [2021-11-20 23:16:28,347 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:16:28,347 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 23:16:28,397 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:16:28,405 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 23:16:28,406 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 23:16:28,421 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:16:28,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-20 23:16:28,435 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:16:28,436 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-20 23:16:28,437 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:16:28,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:16:28,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1916652, now seen corresponding path program 1 times [2021-11-20 23:16:28,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:16:28,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605471372] [2021-11-20 23:16:28,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:16:28,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:16:28,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:16:28,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:16:28,734 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:16:28,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605471372] [2021-11-20 23:16:28,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605471372] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:16:28,747 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:16:28,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:16:28,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86127516] [2021-11-20 23:16:28,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:16:28,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:16:28,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:16:28,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:16:28,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:16:28,805 INFO L87 Difference]: Start difference. First operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:16:28,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:16:28,868 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2021-11-20 23:16:28,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:16:28,877 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-11-20 23:16:28,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:16:28,885 INFO L225 Difference]: With dead ends: 17 [2021-11-20 23:16:28,885 INFO L226 Difference]: Without dead ends: 9 [2021-11-20 23:16:28,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:16:28,892 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 6 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:16:28,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 7 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:16:28,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-11-20 23:16:28,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2021-11-20 23:16:28,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:16:28,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-11-20 23:16:28,927 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2021-11-20 23:16:28,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:16:28,928 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-11-20 23:16:28,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:16:28,928 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-11-20 23:16:28,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-20 23:16:28,929 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:16:28,929 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-11-20 23:16:28,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:16:28,930 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:16:28,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:16:28,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1269628337, now seen corresponding path program 1 times [2021-11-20 23:16:28,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:16:28,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590548463] [2021-11-20 23:16:28,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:16:28,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:16:28,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:16:29,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:16:29,027 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:16:29,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590548463] [2021-11-20 23:16:29,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590548463] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:16:29,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982874634] [2021-11-20 23:16:29,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:16:29,029 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:16:29,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6071811-5dd6-4ef5-8fb3-fbdf8e20060c/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:16:29,031 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6071811-5dd6-4ef5-8fb3-fbdf8e20060c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:16:29,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6071811-5dd6-4ef5-8fb3-fbdf8e20060c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 23:16:29,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:16:29,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-20 23:16:29,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:16:29,259 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:16:29,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:16:29,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:16:29,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982874634] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:16:29,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [221581176] [2021-11-20 23:16:29,519 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-11-20 23:16:29,520 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:16:29,525 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:16:29,532 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:16:29,533 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:16:29,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:29,699 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-20 23:16:29,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-20 23:16:29,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:29,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-20 23:16:30,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:30,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-20 23:16:31,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:31,236 INFO L354 Elim1Store]: treesize reduction 84, result has 15.2 percent of original size [2021-11-20 23:16:31,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 264 treesize of output 261 [2021-11-20 23:16:32,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:16:32,661 INFO L354 Elim1Store]: treesize reduction 84, result has 15.2 percent of original size [2021-11-20 23:16:32,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 264 treesize of output 261 [2021-11-20 23:16:33,654 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:16:34,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [221581176] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:16:34,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-20 23:16:34,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4, 4] total 7 [2021-11-20 23:16:34,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076999776] [2021-11-20 23:16:34,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:16:34,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:16:34,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:16:34,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:16:34,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:16:34,490 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:16:34,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:16:34,517 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2021-11-20 23:16:34,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:16:34,518 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-20 23:16:34,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:16:34,518 INFO L225 Difference]: With dead ends: 8 [2021-11-20 23:16:34,519 INFO L226 Difference]: Without dead ends: 0 [2021-11-20 23:16:34,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:16:34,521 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:16:34,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:16:34,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-20 23:16:34,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-20 23:16:34,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:16:34,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-20 23:16:34,525 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2021-11-20 23:16:34,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:16:34,525 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 23:16:34,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:16:34,526 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-20 23:16:34,526 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-20 23:16:34,529 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 23:16:34,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6071811-5dd6-4ef5-8fb3-fbdf8e20060c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 23:16:34,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6071811-5dd6-4ef5-8fb3-fbdf8e20060c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:16:34,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-20 23:16:35,594 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-20 23:16:35,595 INFO L854 garLoopResultBuilder]: At program point L29-3(lines 29 33) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~#pathbuf~0#1.offset| 0)) (.cse1 (<= 0 |#NULL.base|)) (.cse2 (<= 0 |ULTIMATE.start_glob2_~pathbuf#1.base|)) (.cse3 (<= 0 |ULTIMATE.start_glob2_#in~pathlim#1.base|)) (.cse4 (<= 0 |ULTIMATE.start_glob2_#in~pathbuf#1.offset|)) (.cse5 (<= 0 |ULTIMATE.start_glob2_~p~0#1.offset|)) (.cse6 (<= |ULTIMATE.start_glob2_#in~pathbuf#1.offset| 0)) (.cse7 (<= 0 |ULTIMATE.start_glob2_~pathbuf#1.offset|)) (.cse8 (<= |#NULL.offset| 0)) (.cse9 (<= 0 |ULTIMATE.start_glob2_#in~pathbuf#1.base|)) (.cse10 (<= 4 |ULTIMATE.start_glob2_#in~pathlim#1.offset|)) (.cse11 (<= |ULTIMATE.start_glob2_~pathbuf#1.offset| 0)) (.cse12 (<= |#NULL.base| 0)) (.cse13 (<= |ULTIMATE.start_main_~bound~0#1.offset| 4)) (.cse14 (<= 4 |ULTIMATE.start_glob2_~pathlim#1.offset|)) (.cse15 (<= 4 |ULTIMATE.start_main_~bound~0#1.offset|)) (.cse16 (<= |ULTIMATE.start_glob2_#in~pathlim#1.offset| 4)) (.cse17 (<= 0 |ULTIMATE.start_glob2_~pathlim#1.base|)) (.cse18 (<= ~tmp~0.offset 4)) (.cse19 (<= 0 |ULTIMATE.start_main_~#pathbuf~0#1.base|)) (.cse20 (<= 0 |ULTIMATE.start_main_~bound~0#1.base|)) (.cse21 (<= 0 |ULTIMATE.start_glob2_~p~0#1.base|)) (.cse22 (<= |ULTIMATE.start_glob2_~pathlim#1.offset| 4)) (.cse23 (<= 0 |#NULL.offset|)) (.cse24 (<= 0 |#StackHeapBarrier|)) (.cse25 (<= 0 |ULTIMATE.start_main_~#pathbuf~0#1.offset|))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (<= 4 ~tmp~0.offset) .cse8 .cse9 (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0)) .cse10 .cse11 (<= |ULTIMATE.start_glob2_~p~0#1.offset| 8) .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19 (<= 0 ~tmp~0.base) .cse20 .cse21 .cse22 .cse23 .cse24 .cse25) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (<= (+ |ULTIMATE.start_glob2_~p~0#1.offset| 4) ~tmp~0.offset) .cse9 .cse10 .cse11 .cse12 .cse13 (= ~tmp~0.base |ULTIMATE.start_glob2_~p~0#1.base|) .cse14 .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24 .cse25))) [2021-11-20 23:16:35,595 INFO L858 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-11-20 23:16:35,596 INFO L854 garLoopResultBuilder]: At program point L15-2(lines 14 19) the Hoare annotation is: (and (let ((.cse18 (select |#memory_int| 1))) (let ((.cse0 (= (select |#valid| |ULTIMATE.start_main_~#pathbuf~0#1.base|) 1)) (.cse1 (= (select |#length| |ULTIMATE.start_main_~#pathbuf~0#1.base|) 8)) (.cse2 (= |ULTIMATE.start_glob2_~pathbuf#1.base| |ULTIMATE.start_glob2_#in~pathbuf#1.base|)) (.cse3 (= 2 (select |#length| 1))) (.cse4 (= |ULTIMATE.start_main_~#pathbuf~0#1.base| |ULTIMATE.start_main_~bound~0#1.base|)) (.cse5 (= |ULTIMATE.start_main_~#pathbuf~0#1.base| |ULTIMATE.start_glob2_#in~pathbuf#1.base|)) (.cse6 (= |ULTIMATE.start_glob2_~pathlim#1.base| |ULTIMATE.start_glob2_#in~pathlim#1.base|)) (.cse7 (= (select |#valid| 1) 1)) (.cse8 (= |ULTIMATE.start_glob2_~p~0#1.base| |ULTIMATE.start_glob2_~pathlim#1.base|)) (.cse9 (= (select |#valid| 0) 0)) (.cse10 (< |#StackHeapBarrier| |ULTIMATE.start_main_~#pathbuf~0#1.base|)) (.cse11 (= (select |#valid| 2) 1)) (.cse12 (= |ULTIMATE.start_main_~bound~0#1.base| |ULTIMATE.start_glob2_#in~pathlim#1.base|)) (.cse13 (= (select .cse18 0) 48)) (.cse14 (= 27 (select |#length| 2))) (.cse15 (= (select .cse18 1) 0)) (.cse16 (= |ULTIMATE.start_main_~#pathbuf~0#1.base| ~tmp~0.base)) (.cse17 (< 0 |#StackHeapBarrier|))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 (= |ULTIMATE.start_glob2_~p~0#1.offset| |ULTIMATE.start_glob2_~pathbuf#1.offset|) .cse14 .cse15 .cse16 .cse17) (and (= (select (select |#memory_int| |ULTIMATE.start_glob2_~p~0#1.base|) (+ |ULTIMATE.start_glob2_~p~0#1.offset| (- 4))) 1) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17)))) (let ((.cse19 (<= |ULTIMATE.start_main_~#pathbuf~0#1.offset| 0)) (.cse20 (<= 0 |#NULL.base|)) (.cse21 (<= 0 |ULTIMATE.start_glob2_#in~pathbuf#1.offset|)) (.cse22 (<= |ULTIMATE.start_glob2_#in~pathbuf#1.offset| 0)) (.cse23 (<= 0 |ULTIMATE.start_glob2_~pathbuf#1.offset|)) (.cse24 (<= 4 ~tmp~0.offset)) (.cse25 (<= 1 |ULTIMATE.start___VERIFIER_assert_~cond#1|)) (.cse26 (<= |#NULL.offset| 0)) (.cse27 (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|)) (.cse28 (<= |ULTIMATE.start___VERIFIER_assert_~cond#1| 1)) (.cse29 (<= 4 |ULTIMATE.start_glob2_#in~pathlim#1.offset|)) (.cse30 (<= |ULTIMATE.start_glob2_~pathbuf#1.offset| 0)) (.cse31 (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1)) (.cse32 (<= |#NULL.base| 0)) (.cse33 (<= |ULTIMATE.start_main_~bound~0#1.offset| 4)) (.cse34 (<= 4 |ULTIMATE.start_glob2_~pathlim#1.offset|)) (.cse35 (<= 4 |ULTIMATE.start_main_~bound~0#1.offset|)) (.cse36 (<= |ULTIMATE.start_glob2_#in~pathlim#1.offset| 4)) (.cse37 (<= ~tmp~0.offset 4)) (.cse38 (<= |ULTIMATE.start_glob2_~pathlim#1.offset| 4)) (.cse39 (<= 0 |#NULL.offset|)) (.cse40 (<= 0 |ULTIMATE.start_main_~#pathbuf~0#1.offset|))) (or (and .cse19 .cse20 .cse21 .cse22 .cse23 .cse24 .cse25 .cse26 .cse27 (<= |ULTIMATE.start_glob2_~p~0#1.offset| 4) .cse28 .cse29 .cse30 .cse31 .cse32 .cse33 .cse34 .cse35 .cse36 .cse37 .cse38 .cse39 (<= 4 |ULTIMATE.start_glob2_~p~0#1.offset|) .cse40) (and .cse19 .cse20 .cse21 (<= 0 |ULTIMATE.start_glob2_~p~0#1.offset|) .cse22 .cse23 .cse24 .cse25 .cse26 .cse27 .cse28 .cse29 .cse30 .cse31 .cse32 .cse33 .cse34 .cse35 .cse36 .cse37 (<= |ULTIMATE.start_glob2_~p~0#1.offset| 0) .cse38 .cse39 .cse40)))) [2021-11-20 23:16:35,596 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-20 23:16:35,596 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-11-20 23:16:35,596 INFO L858 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2021-11-20 23:16:35,600 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-20 23:16:35,602 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 23:16:35,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:16:35 BoogieIcfgContainer [2021-11-20 23:16:35,643 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 23:16:35,644 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 23:16:35,644 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 23:16:35,644 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 23:16:35,645 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:16:28" (3/4) ... [2021-11-20 23:16:35,648 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-20 23:16:35,659 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-11-20 23:16:35,659 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-11-20 23:16:35,659 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-20 23:16:35,659 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-20 23:16:35,688 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((\valid[pathbuf] == 1 && unknown-#length-unknown[pathbuf] == 8) && pathbuf == pathbuf) && 2 == unknown-#length-unknown[1]) && pathbuf == bound) && pathbuf == pathbuf) && pathlim == pathlim) && \valid[1] == 1) && p == pathlim) && \valid[0] == 0) && unknown-#StackHeapBarrier-unknown < pathbuf) && \valid[2] == 1) && bound == pathlim) && unknown-#memory_int-unknown[1][0] == 48) && p == pathbuf) && 27 == unknown-#length-unknown[2]) && unknown-#memory_int-unknown[1][1] == 0) && pathbuf == tmp) && 0 < unknown-#StackHeapBarrier-unknown) || ((((((((((((((((((unknown-#memory_int-unknown[p][p + -4] == 1 && \valid[pathbuf] == 1) && unknown-#length-unknown[pathbuf] == 8) && pathbuf == pathbuf) && 2 == unknown-#length-unknown[1]) && pathbuf == bound) && pathbuf == pathbuf) && pathlim == pathlim) && \valid[1] == 1) && p == pathlim) && \valid[0] == 0) && unknown-#StackHeapBarrier-unknown < pathbuf) && \valid[2] == 1) && bound == pathlim) && unknown-#memory_int-unknown[1][0] == 48) && 27 == unknown-#length-unknown[2]) && unknown-#memory_int-unknown[1][1] == 0) && pathbuf == tmp) && 0 < unknown-#StackHeapBarrier-unknown)) && ((((((((((((((((((((((((pathbuf <= 0 && 0 <= #NULL) && 0 <= pathbuf) && pathbuf <= 0) && 0 <= pathbuf) && 4 <= tmp) && 1 <= cond) && #NULL <= 0) && 1 <= \old(cond)) && p <= 4) && cond <= 1) && 4 <= pathlim) && pathbuf <= 0) && \old(cond) <= 1) && #NULL <= 0) && bound <= 4) && 4 <= pathlim) && 4 <= bound) && pathlim <= 4) && tmp <= 4) && pathlim <= 4) && 0 <= #NULL) && 4 <= p) && 0 <= pathbuf) || (((((((((((((((((((((((pathbuf <= 0 && 0 <= #NULL) && 0 <= pathbuf) && 0 <= p) && pathbuf <= 0) && 0 <= pathbuf) && 4 <= tmp) && 1 <= cond) && #NULL <= 0) && 1 <= \old(cond)) && cond <= 1) && 4 <= pathlim) && pathbuf <= 0) && \old(cond) <= 1) && #NULL <= 0) && bound <= 4) && 4 <= pathlim) && 4 <= bound) && pathlim <= 4) && tmp <= 4) && p <= 0) && pathlim <= 4) && 0 <= #NULL) && 0 <= pathbuf)) [2021-11-20 23:16:35,711 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6071811-5dd6-4ef5-8fb3-fbdf8e20060c/bin/utaipan-TEXQjIfE4P/witness.graphml [2021-11-20 23:16:35,712 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 23:16:35,713 INFO L158 Benchmark]: Toolchain (without parser) took 8141.69ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 65.4MB in the beginning and 66.2MB in the end (delta: -824.6kB). Peak memory consumption was 20.6MB. Max. memory is 16.1GB. [2021-11-20 23:16:35,713 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 102.8MB. Free memory is still 81.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:16:35,714 INFO L158 Benchmark]: CACSL2BoogieTranslator took 327.20ms. Allocated memory is still 102.8MB. Free memory was 65.2MB in the beginning and 77.7MB in the end (delta: -12.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 23:16:35,714 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.95ms. Allocated memory is still 102.8MB. Free memory was 77.7MB in the beginning and 76.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 23:16:35,715 INFO L158 Benchmark]: Boogie Preprocessor took 39.52ms. Allocated memory is still 102.8MB. Free memory was 76.4MB in the beginning and 75.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 23:16:35,715 INFO L158 Benchmark]: RCFGBuilder took 339.32ms. Allocated memory is still 102.8MB. Free memory was 75.2MB in the beginning and 64.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 23:16:35,716 INFO L158 Benchmark]: TraceAbstraction took 7308.97ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 64.3MB in the beginning and 69.4MB in the end (delta: -5.1MB). Peak memory consumption was 54.7MB. Max. memory is 16.1GB. [2021-11-20 23:16:35,717 INFO L158 Benchmark]: Witness Printer took 68.15ms. Allocated memory is still 123.7MB. Free memory was 69.4MB in the beginning and 66.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-20 23:16:35,720 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 102.8MB. Free memory is still 81.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 327.20ms. Allocated memory is still 102.8MB. Free memory was 65.2MB in the beginning and 77.7MB in the end (delta: -12.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.95ms. Allocated memory is still 102.8MB. Free memory was 77.7MB in the beginning and 76.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.52ms. Allocated memory is still 102.8MB. Free memory was 76.4MB in the beginning and 75.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 339.32ms. Allocated memory is still 102.8MB. Free memory was 75.2MB in the beginning and 64.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 7308.97ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 64.3MB in the beginning and 69.4MB in the end (delta: -5.1MB). Peak memory consumption was 54.7MB. Max. memory is 16.1GB. * Witness Printer took 68.15ms. Allocated memory is still 123.7MB. Free memory was 69.4MB in the beginning and 66.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.2s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19 IncrementalHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 3 mSDtfsCounter, 19 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=1, InterpolantAutomatonStates: 9, 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 495 HoareAnnotationTreeSize, 2 FomulaSimplifications, 14 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 13 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 129 SizeOfPredicates, 11 NumberOfNonLiveVariables, 80 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: OVERALL_TIME: 4.1s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 7, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 12, TOOLS_POST_TIME: 3.9s, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 12, TOOLS_QUANTIFIERELIM_TIME: 3.9s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.7s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 22, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 3, DOMAIN_JOIN_TIME: 0.1s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 7, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 2.1s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 2.1s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 57, DAG_COMPRESSION_RETAINED_NODES: 22, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((pathbuf <= 0 && 0 <= #NULL) && 0 <= pathbuf) && 0 <= pathlim) && 0 <= pathbuf) && 0 <= p) && pathbuf <= 0) && 0 <= pathbuf) && 4 <= tmp) && #NULL <= 0) && 0 <= pathbuf) && !(cond == 0)) && 4 <= pathlim) && pathbuf <= 0) && p <= 8) && #NULL <= 0) && bound <= 4) && 4 <= pathlim) && 4 <= bound) && pathlim <= 4) && 0 <= pathlim) && tmp <= 4) && 0 <= pathbuf) && 0 <= tmp) && 0 <= bound) && 0 <= p) && pathlim <= 4) && 0 <= #NULL) && 0 <= unknown-#StackHeapBarrier-unknown) && 0 <= pathbuf) || (((((((((((((((((((((((((((pathbuf <= 0 && 0 <= #NULL) && 0 <= pathbuf) && 0 <= pathlim) && 0 <= pathbuf) && 0 <= p) && pathbuf <= 0) && 0 <= pathbuf) && #NULL <= 0) && p + 4 <= tmp) && 0 <= pathbuf) && 4 <= pathlim) && pathbuf <= 0) && #NULL <= 0) && bound <= 4) && tmp == p) && 4 <= pathlim) && 4 <= bound) && pathlim <= 4) && 0 <= pathlim) && tmp <= 4) && 0 <= pathbuf) && 0 <= bound) && 0 <= p) && pathlim <= 4) && 0 <= #NULL) && 0 <= unknown-#StackHeapBarrier-unknown) && 0 <= pathbuf) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((((((((((((\valid[pathbuf] == 1 && unknown-#length-unknown[pathbuf] == 8) && pathbuf == pathbuf) && 2 == unknown-#length-unknown[1]) && pathbuf == bound) && pathbuf == pathbuf) && pathlim == pathlim) && \valid[1] == 1) && p == pathlim) && \valid[0] == 0) && unknown-#StackHeapBarrier-unknown < pathbuf) && \valid[2] == 1) && bound == pathlim) && unknown-#memory_int-unknown[1][0] == 48) && p == pathbuf) && 27 == unknown-#length-unknown[2]) && unknown-#memory_int-unknown[1][1] == 0) && pathbuf == tmp) && 0 < unknown-#StackHeapBarrier-unknown) || ((((((((((((((((((unknown-#memory_int-unknown[p][p + -4] == 1 && \valid[pathbuf] == 1) && unknown-#length-unknown[pathbuf] == 8) && pathbuf == pathbuf) && 2 == unknown-#length-unknown[1]) && pathbuf == bound) && pathbuf == pathbuf) && pathlim == pathlim) && \valid[1] == 1) && p == pathlim) && \valid[0] == 0) && unknown-#StackHeapBarrier-unknown < pathbuf) && \valid[2] == 1) && bound == pathlim) && unknown-#memory_int-unknown[1][0] == 48) && 27 == unknown-#length-unknown[2]) && unknown-#memory_int-unknown[1][1] == 0) && pathbuf == tmp) && 0 < unknown-#StackHeapBarrier-unknown)) && ((((((((((((((((((((((((pathbuf <= 0 && 0 <= #NULL) && 0 <= pathbuf) && pathbuf <= 0) && 0 <= pathbuf) && 4 <= tmp) && 1 <= cond) && #NULL <= 0) && 1 <= \old(cond)) && p <= 4) && cond <= 1) && 4 <= pathlim) && pathbuf <= 0) && \old(cond) <= 1) && #NULL <= 0) && bound <= 4) && 4 <= pathlim) && 4 <= bound) && pathlim <= 4) && tmp <= 4) && pathlim <= 4) && 0 <= #NULL) && 4 <= p) && 0 <= pathbuf) || (((((((((((((((((((((((pathbuf <= 0 && 0 <= #NULL) && 0 <= pathbuf) && 0 <= p) && pathbuf <= 0) && 0 <= pathbuf) && 4 <= tmp) && 1 <= cond) && #NULL <= 0) && 1 <= \old(cond)) && cond <= 1) && 4 <= pathlim) && pathbuf <= 0) && \old(cond) <= 1) && #NULL <= 0) && bound <= 4) && 4 <= pathlim) && 4 <= bound) && pathlim <= 4) && tmp <= 4) && p <= 0) && pathlim <= 4) && 0 <= #NULL) && 0 <= pathbuf)) RESULT: Ultimate proved your program to be correct! [2021-11-20 23:16:35,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6071811-5dd6-4ef5-8fb3-fbdf8e20060c/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE