./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 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd2542f2-d5b4-40cf-a432-f810945f75e6/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd2542f2-d5b4-40cf-a432-f810945f75e6/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd2542f2-d5b4-40cf-a432-f810945f75e6/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd2542f2-d5b4-40cf-a432-f810945f75e6/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/verisec_NetBSD-libc_loop.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd2542f2-d5b4-40cf-a432-f810945f75e6/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd2542f2-d5b4-40cf-a432-f810945f75e6/bin/utaipan-UbGMyvGFUs --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 dedd0e691082a54e7ab91bc5c89cd5119d7051d93eccccd50f69369896fe2c2c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:15:42,203 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:15:42,207 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:15:42,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:15:42,272 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:15:42,276 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:15:42,278 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:15:42,282 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:15:42,285 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:15:42,291 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:15:42,293 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:15:42,295 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:15:42,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:15:42,298 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:15:42,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:15:42,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:15:42,307 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:15:42,308 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:15:42,311 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:15:42,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:15:42,322 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:15:42,326 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:15:42,327 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:15:42,328 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:15:42,331 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:15:42,332 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:15:42,332 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:15:42,333 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:15:42,334 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:15:42,335 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:15:42,335 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:15:42,336 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:15:42,337 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:15:42,337 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:15:42,338 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:15:42,339 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:15:42,339 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:15:42,339 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:15:42,340 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:15:42,340 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:15:42,341 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:15:42,342 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd2542f2-d5b4-40cf-a432-f810945f75e6/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 14:15:42,383 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:15:42,391 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:15:42,392 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:15:42,393 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:15:42,393 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:15:42,393 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:15:42,393 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:15:42,394 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:15:42,394 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:15:42,394 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:15:42,395 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:15:42,396 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:15:42,396 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:15:42,396 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:15:42,396 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:15:42,397 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:15:42,398 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:15:42,398 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:15:42,398 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:15:42,398 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:15:42,399 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:15:42,399 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:15:42,399 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:15:42,399 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:15:42,400 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:15:42,400 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:15:42,400 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:15:42,400 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:15:42,400 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:15:42,401 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:15:42,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:15:42,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:15:42,402 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:15:42,402 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:15:42,402 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:15:42,402 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:15:42,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:15:42,403 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:15:42,403 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:15:42,403 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:15:42,404 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_dd2542f2-d5b4-40cf-a432-f810945f75e6/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd2542f2-d5b4-40cf-a432-f810945f75e6/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dedd0e691082a54e7ab91bc5c89cd5119d7051d93eccccd50f69369896fe2c2c [2021-11-19 14:15:42,775 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:15:42,806 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:15:42,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:15:42,811 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:15:42,812 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:15:42,813 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd2542f2-d5b4-40cf-a432-f810945f75e6/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/loops/verisec_NetBSD-libc_loop.i [2021-11-19 14:15:42,872 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd2542f2-d5b4-40cf-a432-f810945f75e6/bin/utaipan-UbGMyvGFUs/data/3c1c5ced1/e380689ecc414f22acb5cf207e40cfe7/FLAG39f51fb76 [2021-11-19 14:15:43,460 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:15:43,460 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd2542f2-d5b4-40cf-a432-f810945f75e6/sv-benchmarks/c/loops/verisec_NetBSD-libc_loop.i [2021-11-19 14:15:43,472 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd2542f2-d5b4-40cf-a432-f810945f75e6/bin/utaipan-UbGMyvGFUs/data/3c1c5ced1/e380689ecc414f22acb5cf207e40cfe7/FLAG39f51fb76 [2021-11-19 14:15:43,764 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd2542f2-d5b4-40cf-a432-f810945f75e6/bin/utaipan-UbGMyvGFUs/data/3c1c5ced1/e380689ecc414f22acb5cf207e40cfe7 [2021-11-19 14:15:43,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:15:43,771 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:15:43,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:15:43,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:15:43,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:15:43,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:15:43" (1/1) ... [2021-11-19 14:15:43,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b973ee1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:43, skipping insertion in model container [2021-11-19 14:15:43,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:15:43" (1/1) ... [2021-11-19 14:15:43,797 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:15:43,816 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:15:44,024 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_dd2542f2-d5b4-40cf-a432-f810945f75e6/sv-benchmarks/c/loops/verisec_NetBSD-libc_loop.i[825,838] [2021-11-19 14:15:44,055 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:15:44,065 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:15:44,086 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_dd2542f2-d5b4-40cf-a432-f810945f75e6/sv-benchmarks/c/loops/verisec_NetBSD-libc_loop.i[825,838] [2021-11-19 14:15:44,099 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:15:44,119 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:15:44,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:44 WrapperNode [2021-11-19 14:15:44,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:15:44,121 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:15:44,122 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:15:44,122 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:15:44,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:44" (1/1) ... [2021-11-19 14:15:44,139 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:44" (1/1) ... [2021-11-19 14:15:44,164 INFO L137 Inliner]: procedures = 16, calls = 12, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 43 [2021-11-19 14:15:44,165 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:15:44,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:15:44,166 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:15:44,166 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:15:44,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:44" (1/1) ... [2021-11-19 14:15:44,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:44" (1/1) ... [2021-11-19 14:15:44,189 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:44" (1/1) ... [2021-11-19 14:15:44,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:44" (1/1) ... [2021-11-19 14:15:44,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:44" (1/1) ... [2021-11-19 14:15:44,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:44" (1/1) ... [2021-11-19 14:15:44,208 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:44" (1/1) ... [2021-11-19 14:15:44,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:15:44,219 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:15:44,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:15:44,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:15:44,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:44" (1/1) ... [2021-11-19 14:15:44,229 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:15:44,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd2542f2-d5b4-40cf-a432-f810945f75e6/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:15:44,263 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd2542f2-d5b4-40cf-a432-f810945f75e6/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:15:44,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd2542f2-d5b4-40cf-a432-f810945f75e6/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:15:44,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:15:44,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 14:15:44,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:15:44,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-19 14:15:44,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:15:44,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:15:44,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:15:44,408 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:15:44,411 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:15:44,599 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:15:44,633 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:15:44,633 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 14:15:44,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:15:44 BoogieIcfgContainer [2021-11-19 14:15:44,636 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:15:44,637 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:15:44,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:15:44,641 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:15:44,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:15:43" (1/3) ... [2021-11-19 14:15:44,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63369d6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:15:44, skipping insertion in model container [2021-11-19 14:15:44,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:44" (2/3) ... [2021-11-19 14:15:44,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63369d6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:15:44, skipping insertion in model container [2021-11-19 14:15:44,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:15:44" (3/3) ... [2021-11-19 14:15:44,644 INFO L111 eAbstractionObserver]: Analyzing ICFG verisec_NetBSD-libc_loop.i [2021-11-19 14:15:44,650 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:15:44,650 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:15:44,718 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:15:44,726 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 [2021-11-19 14:15:44,741 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:15:44,763 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) [2021-11-19 14:15:44,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-19 14:15:44,773 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:15:44,773 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-19 14:15:44,774 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:15:44,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:15:44,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1916652, now seen corresponding path program 1 times [2021-11-19 14:15:44,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:15:44,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590811317] [2021-11-19 14:15:44,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:15:44,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:15:44,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:15:45,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:15:45,053 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:15:45,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590811317] [2021-11-19 14:15:45,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590811317] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:15:45,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:15:45,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 14:15:45,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262946789] [2021-11-19 14:15:45,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:15:45,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:15:45,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:15:45,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:15:45,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:15:45,101 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) [2021-11-19 14:15:45,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:15:45,156 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2021-11-19 14:15:45,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:15:45,158 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 [2021-11-19 14:15:45,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:15:45,166 INFO L225 Difference]: With dead ends: 17 [2021-11-19 14:15:45,167 INFO L226 Difference]: Without dead ends: 9 [2021-11-19 14:15:45,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:15:45,174 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 [2021-11-19 14:15:45,175 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] [2021-11-19 14:15:45,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-11-19 14:15:45,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2021-11-19 14:15:45,209 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) [2021-11-19 14:15:45,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-11-19 14:15:45,211 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2021-11-19 14:15:45,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:15:45,211 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-11-19 14:15:45,212 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) [2021-11-19 14:15:45,212 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-11-19 14:15:45,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 14:15:45,213 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:15:45,213 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-11-19 14:15:45,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 14:15:45,214 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:15:45,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:15:45,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1269628337, now seen corresponding path program 1 times [2021-11-19 14:15:45,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:15:45,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596375417] [2021-11-19 14:15:45,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:15:45,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:15:45,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:15:45,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:15:45,296 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:15:45,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596375417] [2021-11-19 14:15:45,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596375417] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 14:15:45,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710832529] [2021-11-19 14:15:45,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:15:45,298 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:15:45,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd2542f2-d5b4-40cf-a432-f810945f75e6/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:15:45,300 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd2542f2-d5b4-40cf-a432-f810945f75e6/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:15:45,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd2542f2-d5b4-40cf-a432-f810945f75e6/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 14:15:45,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:15:45,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 14:15:45,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:15:45,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:15:45,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:15:45,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:15:45,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710832529] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:15:45,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [613120920] [2021-11-19 14:15:45,705 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-11-19 14:15:45,705 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 14:15:45,710 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 14:15:45,720 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 14:15:45,721 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 14:15:45,763 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:15:45,768 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 14:15:45,775 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:15:45,776 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-19 14:15:45,778 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 14:15:45,779 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:15:45,780 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-19 14:15:45,783 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-11-19 14:15:45,807 INFO L446 ElimStorePlain]: Different costs {2=[|v_#length_8|], 7=[|v_#valid_26|]} [2021-11-19 14:15:45,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:45,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:45,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 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 [2021-11-19 14:15:45,833 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:15:45,835 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-19 14:15:45,836 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:15:45,843 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-19 14:15:45,844 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-19 14:15:45,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:15:45,930 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:15:45,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:45,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:45,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-19 14:15:45,952 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:15:45,956 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-19 14:15:45,957 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:15:45,958 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-19 14:15:45,958 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-19 14:15:45,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:15:45,981 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:15:45,985 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:15:45,996 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-11-19 14:15:45,998 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-19 14:15:45,998 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:122, output treesize:115 [2021-11-19 14:15:46,025 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:15:46,036 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 14:15:46,042 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:15:46,043 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-19 14:15:46,062 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-11-19 14:15:46,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:15:46,121 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 [2021-11-19 14:15:46,124 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:15:46,133 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-19 14:15:46,134 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:15:46,134 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-19 14:15:46,135 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-19 14:15:46,148 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-19 14:15:46,148 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:15:46,149 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-19 14:15:46,150 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:15:46,150 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-19 14:15:46,150 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-19 14:15:46,162 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-19 14:15:46,162 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:15:46,163 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-19 14:15:46,163 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:15:46,164 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-19 14:15:46,164 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-19 14:15:46,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:15:46,198 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:15:46,203 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:15:46,208 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 152 [2021-11-19 14:15:46,209 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-19 14:15:46,214 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:463, output treesize:152 [2021-11-19 14:15:46,226 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.3 percent of original size [2021-11-19 14:15:46,249 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 167 [2021-11-19 14:15:46,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:15:46,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:15:46,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:15:46,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:15:46,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:15:46,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:15:46,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:15:46,347 INFO L180 QuantifierPusher]: treesize reduction 18, result has 85.7 percent of original size [2021-11-19 14:15:46,351 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 14:15:46,352 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:15:46,352 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-19 14:15:46,355 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-11-19 14:15:46,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-19 14:15:46,366 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:15:46,367 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-19 14:15:46,368 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:15:46,372 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-19 14:15:46,372 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-19 14:15:46,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:15:46,381 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:15:46,384 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:15:46,387 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-19 14:15:46,387 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-19 14:15:46,388 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:101, output treesize:97 [2021-11-19 14:15:46,393 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:15:46,400 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-11-19 14:15:46,410 INFO L180 QuantifierPusher]: treesize reduction 18, result has 85.7 percent of original size [2021-11-19 14:15:46,413 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 14:15:46,414 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:15:46,414 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-19 14:15:46,422 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-11-19 14:15:46,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-19 14:15:46,432 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:15:46,433 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-19 14:15:46,434 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:15:46,434 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-19 14:15:46,434 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-19 14:15:46,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:15:46,442 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:15:46,445 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:15:46,447 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-19 14:15:46,448 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-19 14:15:46,449 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:101, output treesize:97 [2021-11-19 14:15:46,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:15:46,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:15:46,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:15:46,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:15:46,549 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:15:46,556 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-11-19 14:15:46,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:15:46,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:15:46,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:15:46,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:15:46,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:15:46,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:15:46,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:15:46,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:15:46,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:15:46,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:15:46,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:15:46,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:15:46,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:15:46,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:15:46,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:15:46,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 14:15:46,673 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 14:15:47,813 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 14:15:47,813 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 14:15:47,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2021-11-19 14:15:47,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979533073] [2021-11-19 14:15:47,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 14:15:47,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:15:47,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:15:47,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:15:47,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:15:47,822 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 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) [2021-11-19 14:15:47,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:15:47,908 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-11-19 14:15:47,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:15:47,909 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 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 [2021-11-19 14:15:47,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:15:47,912 INFO L225 Difference]: With dead ends: 15 [2021-11-19 14:15:47,912 INFO L226 Difference]: Without dead ends: 13 [2021-11-19 14:15:47,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:15:47,915 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 6 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:15:47,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 7 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:15:47,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-19 14:15:47,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 11. [2021-11-19 14:15:47,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 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) [2021-11-19 14:15:47,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-11-19 14:15:47,920 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2021-11-19 14:15:47,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:15:47,927 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-11-19 14:15:47,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 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) [2021-11-19 14:15:47,928 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-11-19 14:15:47,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-19 14:15:47,929 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:15:47,929 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2021-11-19 14:15:47,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd2542f2-d5b4-40cf-a432-f810945f75e6/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:15:48,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd2542f2-d5b4-40cf-a432-f810945f75e6/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:15:48,157 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:15:48,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:15:48,158 INFO L85 PathProgramCache]: Analyzing trace with hash 2021002444, now seen corresponding path program 2 times [2021-11-19 14:15:48,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:15:48,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862595324] [2021-11-19 14:15:48,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:15:48,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:15:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 14:15:48,186 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 14:15:48,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 14:15:48,225 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-19 14:15:48,225 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 14:15:48,227 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-19 14:15:48,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-19 14:15:48,233 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1] [2021-11-19 14:15:48,237 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 14:15:48,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 02:15:48 BoogieIcfgContainer [2021-11-19 14:15:48,271 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 14:15:48,272 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 14:15:48,272 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 14:15:48,272 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 14:15:48,273 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:15:44" (3/4) ... [2021-11-19 14:15:48,275 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-19 14:15:48,321 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd2542f2-d5b4-40cf-a432-f810945f75e6/bin/utaipan-UbGMyvGFUs/witness.graphml [2021-11-19 14:15:48,321 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 14:15:48,322 INFO L158 Benchmark]: Toolchain (without parser) took 4550.68ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 65.6MB in the beginning and 51.1MB in the end (delta: 14.5MB). Peak memory consumption was 34.2MB. Max. memory is 16.1GB. [2021-11-19 14:15:48,322 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 90.2MB. Free memory is still 63.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:15:48,323 INFO L158 Benchmark]: CACSL2BoogieTranslator took 345.29ms. Allocated memory is still 90.2MB. Free memory was 65.5MB in the beginning and 64.0MB in the end (delta: 1.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 14:15:48,323 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.48ms. Allocated memory is still 90.2MB. Free memory was 64.0MB in the beginning and 62.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 14:15:48,323 INFO L158 Benchmark]: Boogie Preprocessor took 52.96ms. Allocated memory is still 90.2MB. Free memory was 62.5MB in the beginning and 61.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:15:48,324 INFO L158 Benchmark]: RCFGBuilder took 416.33ms. Allocated memory is still 90.2MB. Free memory was 61.2MB in the beginning and 50.9MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 14:15:48,324 INFO L158 Benchmark]: TraceAbstraction took 3633.94ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 50.4MB in the beginning and 53.2MB in the end (delta: -2.9MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. [2021-11-19 14:15:48,325 INFO L158 Benchmark]: Witness Printer took 49.20ms. Allocated memory is still 109.1MB. Free memory was 53.2MB in the beginning and 51.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 14:15:48,327 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 90.2MB. Free memory is still 63.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 345.29ms. Allocated memory is still 90.2MB. Free memory was 65.5MB in the beginning and 64.0MB in the end (delta: 1.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.48ms. Allocated memory is still 90.2MB. Free memory was 64.0MB in the beginning and 62.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.96ms. Allocated memory is still 90.2MB. Free memory was 62.5MB in the beginning and 61.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 416.33ms. Allocated memory is still 90.2MB. Free memory was 61.2MB in the beginning and 50.9MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3633.94ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 50.4MB in the beginning and 53.2MB in the end (delta: -2.9MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. * Witness Printer took 49.20ms. Allocated memory is still 109.1MB. Free memory was 53.2MB in the beginning and 51.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. 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 - CounterExampleResult [Line: 16]: a call to reach_error is reachable a call to reach_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 [L46] CALL glob2 (pathbuf, bound) [L27] Char *p; [L29] p = pathbuf VAL [p={3:0}, pathbuf={3:0}, pathbuf={3:0}, pathlim={3:28}, pathlim={3:28}, tmp={3:4}] [L29] COND TRUE p <= pathlim [L31] CALL __VERIFIER_assert(p<=tmp) [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, tmp={3:4}] [L31] RET __VERIFIER_assert(p<=tmp) [L32] *p = 1 [L29] p++ VAL [p={3:4}, pathbuf={3:0}, pathbuf={3:0}, pathlim={3:28}, pathlim={3:28}, tmp={3:4}] [L29] COND TRUE p <= pathlim [L31] CALL __VERIFIER_assert(p<=tmp) [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, tmp={3:4}] [L31] RET __VERIFIER_assert(p<=tmp) [L32] *p = 1 [L29] p++ VAL [p={3:8}, pathbuf={3:0}, pathbuf={3:0}, pathlim={3:28}, pathlim={3:28}, tmp={3:4}] [L29] COND TRUE p <= pathlim [L31] CALL __VERIFIER_assert(p<=tmp) [L15] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, tmp={3:4}] [L16] reach_error() VAL [\old(cond)=0, cond=0, tmp={3:4}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.5s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 14 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 31 IncrementalHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 5 mSDtfsCounter, 31 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=2, InterpolantAutomatonStates: 12, 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, 0.5s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 4 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: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-19 14:15:48,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd2542f2-d5b4-40cf-a432-f810945f75e6/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE