./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-properties/splice-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_4c76eb19-55e6-4ba4-b95b-a9a4f52b0cb6/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4c76eb19-55e6-4ba4-b95b-a9a4f52b0cb6/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4c76eb19-55e6-4ba4-b95b-a9a4f52b0cb6/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4c76eb19-55e6-4ba4-b95b-a9a4f52b0cb6/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/splice-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_4c76eb19-55e6-4ba4-b95b-a9a4f52b0cb6/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4c76eb19-55e6-4ba4-b95b-a9a4f52b0cb6/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cac090f4bce8d8ee66db31cac76f8c06713c6de9 ................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_4c76eb19-55e6-4ba4-b95b-a9a4f52b0cb6/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4c76eb19-55e6-4ba4-b95b-a9a4f52b0cb6/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4c76eb19-55e6-4ba4-b95b-a9a4f52b0cb6/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4c76eb19-55e6-4ba4-b95b-a9a4f52b0cb6/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/splice-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_4c76eb19-55e6-4ba4-b95b-a9a4f52b0cb6/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4c76eb19-55e6-4ba4-b95b-a9a4f52b0cb6/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cac090f4bce8d8ee66db31cac76f8c06713c6de9 ................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 14:30:05,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 14:30:05,199 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 14:30:05,220 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 14:30:05,220 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 14:30:05,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 14:30:05,223 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 14:30:05,224 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 14:30:05,226 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 14:30:05,227 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 14:30:05,228 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 14:30:05,229 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 14:30:05,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 14:30:05,230 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 14:30:05,231 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 14:30:05,232 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 14:30:05,233 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 14:30:05,233 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 14:30:05,235 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 14:30:05,237 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 14:30:05,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 14:30:05,239 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 14:30:05,240 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 14:30:05,241 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 14:30:05,244 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 14:30:05,244 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 14:30:05,244 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 14:30:05,245 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 14:30:05,246 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 14:30:05,246 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 14:30:05,247 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 14:30:05,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 14:30:05,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 14:30:05,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 14:30:05,250 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 14:30:05,250 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 14:30:05,251 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 14:30:05,251 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 14:30:05,251 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 14:30:05,252 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 14:30:05,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 14:30:05,253 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4c76eb19-55e6-4ba4-b95b-a9a4f52b0cb6/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-12-09 14:30:05,275 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 14:30:05,276 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 14:30:05,276 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 14:30:05,277 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 14:30:05,277 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 14:30:05,277 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 14:30:05,277 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 14:30:05,277 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 14:30:05,277 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 14:30:05,277 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 14:30:05,277 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 14:30:05,278 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 14:30:05,278 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 14:30:05,278 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 14:30:05,278 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 14:30:05,279 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 14:30:05,279 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 14:30:05,279 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 14:30:05,279 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 14:30:05,279 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 14:30:05,279 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 14:30:05,280 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 14:30:05,280 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 14:30:05,280 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 14:30:05,280 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 14:30:05,280 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 14:30:05,280 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 14:30:05,280 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 14:30:05,280 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 14:30:05,281 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 14:30:05,281 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 14:30:05,281 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 14:30:05,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 14:30:05,281 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 14:30:05,281 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 14:30:05,281 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 14:30:05,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 14:30:05,282 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 14:30:05,282 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 14:30:05,282 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_4c76eb19-55e6-4ba4-b95b-a9a4f52b0cb6/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4c76eb19-55e6-4ba4-b95b-a9a4f52b0cb6/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cac090f4bce8d8ee66db31cac76f8c06713c6de9 [2020-12-09 14:30:05,470 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 14:30:05,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 14:30:05,488 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 14:30:05,489 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 14:30:05,489 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 14:30:05,490 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4c76eb19-55e6-4ba4-b95b-a9a4f52b0cb6/bin/utaipan/../../sv-benchmarks/c/list-properties/splice-2.i [2020-12-09 14:30:05,532 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4c76eb19-55e6-4ba4-b95b-a9a4f52b0cb6/bin/utaipan/data/9b54cd98d/fce8219807e64638840058ba5823a232/FLAG959a0cc47 [2020-12-09 14:30:05,941 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 14:30:05,942 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4c76eb19-55e6-4ba4-b95b-a9a4f52b0cb6/sv-benchmarks/c/list-properties/splice-2.i [2020-12-09 14:30:05,951 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4c76eb19-55e6-4ba4-b95b-a9a4f52b0cb6/bin/utaipan/data/9b54cd98d/fce8219807e64638840058ba5823a232/FLAG959a0cc47 [2020-12-09 14:30:05,963 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4c76eb19-55e6-4ba4-b95b-a9a4f52b0cb6/bin/utaipan/data/9b54cd98d/fce8219807e64638840058ba5823a232 [2020-12-09 14:30:05,965 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 14:30:05,966 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 14:30:05,968 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 14:30:05,968 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 14:30:05,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 14:30:05,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:30:05" (1/1) ... [2020-12-09 14:30:05,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ebd2f60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:30:05, skipping insertion in model container [2020-12-09 14:30:05,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:30:05" (1/1) ... [2020-12-09 14:30:05,980 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 14:30:06,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 14:30:06,207 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4c76eb19-55e6-4ba4-b95b-a9a4f52b0cb6/sv-benchmarks/c/list-properties/splice-2.i[23721,23734] [2020-12-09 14:30:06,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 14:30:06,217 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 14:30:06,245 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4c76eb19-55e6-4ba4-b95b-a9a4f52b0cb6/sv-benchmarks/c/list-properties/splice-2.i[23721,23734] [2020-12-09 14:30:06,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 14:30:06,282 INFO L208 MainTranslator]: Completed translation [2020-12-09 14:30:06,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:30:06 WrapperNode [2020-12-09 14:30:06,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 14:30:06,283 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 14:30:06,283 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 14:30:06,283 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 14:30:06,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:30:06" (1/1) ... [2020-12-09 14:30:06,298 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:30:06" (1/1) ... [2020-12-09 14:30:06,313 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 14:30:06,314 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 14:30:06,314 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 14:30:06,314 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 14:30:06,320 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:30:06" (1/1) ... [2020-12-09 14:30:06,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:30:06" (1/1) ... [2020-12-09 14:30:06,323 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:30:06" (1/1) ... [2020-12-09 14:30:06,323 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:30:06" (1/1) ... [2020-12-09 14:30:06,330 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:30:06" (1/1) ... [2020-12-09 14:30:06,333 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:30:06" (1/1) ... [2020-12-09 14:30:06,335 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:30:06" (1/1) ... [2020-12-09 14:30:06,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 14:30:06,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 14:30:06,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 14:30:06,338 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 14:30:06,339 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:30:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4c76eb19-55e6-4ba4-b95b-a9a4f52b0cb6/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 14:30:06,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 14:30:06,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 14:30:06,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-09 14:30:06,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-09 14:30:06,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 14:30:06,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-09 14:30:06,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 14:30:06,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 14:30:06,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 14:30:06,808 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 14:30:06,809 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2020-12-09 14:30:06,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:30:06 BoogieIcfgContainer [2020-12-09 14:30:06,811 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 14:30:06,812 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 14:30:06,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 14:30:06,814 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 14:30:06,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 02:30:05" (1/3) ... [2020-12-09 14:30:06,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c16603b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:30:06, skipping insertion in model container [2020-12-09 14:30:06,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:30:06" (2/3) ... [2020-12-09 14:30:06,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c16603b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:30:06, skipping insertion in model container [2020-12-09 14:30:06,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:30:06" (3/3) ... [2020-12-09 14:30:06,816 INFO L111 eAbstractionObserver]: Analyzing ICFG splice-2.i [2020-12-09 14:30:06,826 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 14:30:06,829 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 30 error locations. [2020-12-09 14:30:06,840 INFO L253 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2020-12-09 14:30:06,860 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 14:30:06,860 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-09 14:30:06,861 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 14:30:06,861 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 14:30:06,861 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 14:30:06,861 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 14:30:06,861 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 14:30:06,861 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 14:30:06,873 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2020-12-09 14:30:06,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-09 14:30:06,877 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:30:06,878 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-09 14:30:06,878 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 14:30:06,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:30:06,882 INFO L82 PathProgramCache]: Analyzing trace with hash 5791660, now seen corresponding path program 1 times [2020-12-09 14:30:06,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:30:06,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587950271] [2020-12-09 14:30:06,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:30:06,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:30:06,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:30:06,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587950271] [2020-12-09 14:30:06,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:30:06,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 14:30:06,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103766006] [2020-12-09 14:30:06,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 14:30:06,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:30:07,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 14:30:07,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 14:30:07,005 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 2 states. [2020-12-09 14:30:07,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:30:07,015 INFO L93 Difference]: Finished difference Result 64 states and 73 transitions. [2020-12-09 14:30:07,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 14:30:07,015 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-12-09 14:30:07,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:30:07,021 INFO L225 Difference]: With dead ends: 64 [2020-12-09 14:30:07,021 INFO L226 Difference]: Without dead ends: 61 [2020-12-09 14:30:07,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 14:30:07,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-09 14:30:07,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-12-09 14:30:07,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-12-09 14:30:07,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2020-12-09 14:30:07,046 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 4 [2020-12-09 14:30:07,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:30:07,047 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2020-12-09 14:30:07,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 14:30:07,047 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2020-12-09 14:30:07,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 14:30:07,047 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:30:07,047 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 14:30:07,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 14:30:07,047 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 14:30:07,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:30:07,048 INFO L82 PathProgramCache]: Analyzing trace with hash 179505802, now seen corresponding path program 1 times [2020-12-09 14:30:07,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:30:07,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022556713] [2020-12-09 14:30:07,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:30:07,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:30:07,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:30:07,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022556713] [2020-12-09 14:30:07,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:30:07,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 14:30:07,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110075963] [2020-12-09 14:30:07,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 14:30:07,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:30:07,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 14:30:07,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 14:30:07,110 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand 4 states. [2020-12-09 14:30:07,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:30:07,207 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2020-12-09 14:30:07,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 14:30:07,208 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-12-09 14:30:07,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:30:07,210 INFO L225 Difference]: With dead ends: 68 [2020-12-09 14:30:07,210 INFO L226 Difference]: Without dead ends: 68 [2020-12-09 14:30:07,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 14:30:07,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-12-09 14:30:07,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 62. [2020-12-09 14:30:07,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-09 14:30:07,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2020-12-09 14:30:07,219 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 5 [2020-12-09 14:30:07,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:30:07,219 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2020-12-09 14:30:07,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 14:30:07,219 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2020-12-09 14:30:07,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 14:30:07,220 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:30:07,220 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 14:30:07,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 14:30:07,220 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 14:30:07,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:30:07,221 INFO L82 PathProgramCache]: Analyzing trace with hash 179505803, now seen corresponding path program 1 times [2020-12-09 14:30:07,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:30:07,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832168172] [2020-12-09 14:30:07,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:30:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:30:07,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:30:07,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832168172] [2020-12-09 14:30:07,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:30:07,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 14:30:07,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020748427] [2020-12-09 14:30:07,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 14:30:07,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:30:07,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 14:30:07,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 14:30:07,269 INFO L87 Difference]: Start difference. First operand 62 states and 75 transitions. Second operand 4 states. [2020-12-09 14:30:07,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:30:07,362 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2020-12-09 14:30:07,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 14:30:07,367 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-12-09 14:30:07,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:30:07,368 INFO L225 Difference]: With dead ends: 72 [2020-12-09 14:30:07,368 INFO L226 Difference]: Without dead ends: 72 [2020-12-09 14:30:07,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 14:30:07,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-12-09 14:30:07,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 67. [2020-12-09 14:30:07,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-12-09 14:30:07,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 77 transitions. [2020-12-09 14:30:07,373 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 77 transitions. Word has length 5 [2020-12-09 14:30:07,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:30:07,373 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 77 transitions. [2020-12-09 14:30:07,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 14:30:07,373 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 77 transitions. [2020-12-09 14:30:07,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 14:30:07,374 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:30:07,374 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:30:07,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 14:30:07,374 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 14:30:07,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:30:07,375 INFO L82 PathProgramCache]: Analyzing trace with hash 423089930, now seen corresponding path program 1 times [2020-12-09 14:30:07,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:30:07,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2300185] [2020-12-09 14:30:07,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:30:07,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 14:30:07,390 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 14:30:07,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 14:30:07,403 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 14:30:07,418 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 14:30:07,418 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 14:30:07,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 14:30:07,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 02:30:07 BoogieIcfgContainer [2020-12-09 14:30:07,433 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 14:30:07,433 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 14:30:07,433 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 14:30:07,433 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 14:30:07,434 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:30:06" (3/4) ... [2020-12-09 14:30:07,436 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 14:30:07,436 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 14:30:07,437 INFO L168 Benchmark]: Toolchain (without parser) took 1469.74 ms. Allocated memory was 81.8 MB in the beginning and 119.5 MB in the end (delta: 37.7 MB). Free memory was 43.3 MB in the beginning and 89.0 MB in the end (delta: -45.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 14:30:07,437 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 81.8 MB. Free memory was 60.7 MB in the beginning and 60.6 MB in the end (delta: 76.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 14:30:07,438 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.29 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 43.2 MB in the beginning and 60.3 MB in the end (delta: -17.1 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. [2020-12-09 14:30:07,438 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.42 ms. Allocated memory is still 98.6 MB. Free memory was 60.3 MB in the beginning and 58.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 14:30:07,439 INFO L168 Benchmark]: Boogie Preprocessor took 23.41 ms. Allocated memory is still 98.6 MB. Free memory was 58.4 MB in the beginning and 56.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 14:30:07,439 INFO L168 Benchmark]: RCFGBuilder took 472.93 ms. Allocated memory is still 98.6 MB. Free memory was 56.7 MB in the beginning and 54.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 21.3 MB. Max. memory is 16.1 GB. [2020-12-09 14:30:07,440 INFO L168 Benchmark]: TraceAbstraction took 621.15 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 53.6 MB in the beginning and 89.8 MB in the end (delta: -36.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 14:30:07,440 INFO L168 Benchmark]: Witness Printer took 2.68 ms. Allocated memory is still 119.5 MB. Free memory was 89.8 MB in the beginning and 89.0 MB in the end (delta: 777.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 14:30:07,443 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 81.8 MB. Free memory was 60.7 MB in the beginning and 60.6 MB in the end (delta: 76.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 314.29 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 43.2 MB in the beginning and 60.3 MB in the end (delta: -17.1 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.42 ms. Allocated memory is still 98.6 MB. Free memory was 60.3 MB in the beginning and 58.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.41 ms. Allocated memory is still 98.6 MB. Free memory was 58.4 MB in the beginning and 56.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 472.93 ms. Allocated memory is still 98.6 MB. Free memory was 56.7 MB in the beginning and 54.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 21.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 621.15 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 53.6 MB in the beginning and 89.8 MB in the end (delta: -36.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 2.68 ms. Allocated memory is still 119.5 MB. Free memory was 89.8 MB in the beginning and 89.0 MB in the end (delta: 777.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] int flag = 1; [L533] List a = (List) malloc(sizeof(struct node)); [L534] COND FALSE !(a == 0) [L535] List t; [L536] List l1; [L537] List l2; [L538] List b; [L539] List u; [L540] List p = a; [L541] COND FALSE !(__VERIFIER_nondet_int()) [L554] p->h = 3 [L555] EXPR a->h [L555] COND TRUE a->h == 3 [L555] return 0; - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 64 locations, 30 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 128 SDtfs, 188 SDslu, 27 SDs, 0 SdLazy, 136 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred in iteration=3, 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, 3 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 233 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2020-12-09 14:30:09,132 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 14:30:09,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 14:30:09,155 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 14:30:09,156 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 14:30:09,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 14:30:09,158 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 14:30:09,160 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 14:30:09,162 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 14:30:09,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 14:30:09,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 14:30:09,164 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 14:30:09,165 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 14:30:09,165 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 14:30:09,166 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 14:30:09,167 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 14:30:09,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 14:30:09,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 14:30:09,170 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 14:30:09,172 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 14:30:09,173 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 14:30:09,174 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 14:30:09,175 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 14:30:09,176 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 14:30:09,179 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 14:30:09,179 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 14:30:09,179 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 14:30:09,180 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 14:30:09,181 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 14:30:09,181 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 14:30:09,182 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 14:30:09,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 14:30:09,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 14:30:09,184 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 14:30:09,185 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 14:30:09,185 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 14:30:09,186 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 14:30:09,186 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 14:30:09,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 14:30:09,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 14:30:09,188 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 14:30:09,189 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4c76eb19-55e6-4ba4-b95b-a9a4f52b0cb6/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2020-12-09 14:30:09,213 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 14:30:09,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 14:30:09,213 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 14:30:09,214 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 14:30:09,214 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 14:30:09,214 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 14:30:09,214 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 14:30:09,214 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 14:30:09,214 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 14:30:09,215 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 14:30:09,215 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 14:30:09,215 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 14:30:09,215 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 14:30:09,215 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 14:30:09,215 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 14:30:09,215 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 14:30:09,216 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 14:30:09,216 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 14:30:09,216 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 14:30:09,216 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 14:30:09,216 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 14:30:09,216 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 14:30:09,216 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 14:30:09,216 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 14:30:09,217 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 14:30:09,217 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 14:30:09,217 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 14:30:09,217 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 14:30:09,217 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 14:30:09,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 14:30:09,217 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 14:30:09,217 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 14:30:09,218 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 14:30:09,218 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 14:30:09,218 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 14:30:09,218 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 14:30:09,218 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_4c76eb19-55e6-4ba4-b95b-a9a4f52b0cb6/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4c76eb19-55e6-4ba4-b95b-a9a4f52b0cb6/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cac090f4bce8d8ee66db31cac76f8c06713c6de9 [2020-12-09 14:30:09,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 14:30:09,467 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 14:30:09,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 14:30:09,470 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 14:30:09,471 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 14:30:09,471 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4c76eb19-55e6-4ba4-b95b-a9a4f52b0cb6/bin/utaipan/../../sv-benchmarks/c/list-properties/splice-2.i [2020-12-09 14:30:09,512 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4c76eb19-55e6-4ba4-b95b-a9a4f52b0cb6/bin/utaipan/data/681b7a169/f29eb3b68d9748e4b3b6e13aead1a1ef/FLAG9ba75a561 [2020-12-09 14:30:09,968 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 14:30:09,969 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4c76eb19-55e6-4ba4-b95b-a9a4f52b0cb6/sv-benchmarks/c/list-properties/splice-2.i [2020-12-09 14:30:09,979 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4c76eb19-55e6-4ba4-b95b-a9a4f52b0cb6/bin/utaipan/data/681b7a169/f29eb3b68d9748e4b3b6e13aead1a1ef/FLAG9ba75a561 [2020-12-09 14:30:09,989 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4c76eb19-55e6-4ba4-b95b-a9a4f52b0cb6/bin/utaipan/data/681b7a169/f29eb3b68d9748e4b3b6e13aead1a1ef [2020-12-09 14:30:09,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 14:30:09,992 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 14:30:09,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 14:30:09,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 14:30:09,995 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 14:30:09,996 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:30:09" (1/1) ... [2020-12-09 14:30:09,997 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c12700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:30:09, skipping insertion in model container [2020-12-09 14:30:09,997 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:30:09" (1/1) ... [2020-12-09 14:30:10,002 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 14:30:10,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 14:30:10,211 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4c76eb19-55e6-4ba4-b95b-a9a4f52b0cb6/sv-benchmarks/c/list-properties/splice-2.i[23721,23734] [2020-12-09 14:30:10,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 14:30:10,224 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 14:30:10,252 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4c76eb19-55e6-4ba4-b95b-a9a4f52b0cb6/sv-benchmarks/c/list-properties/splice-2.i[23721,23734] [2020-12-09 14:30:10,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 14:30:10,292 INFO L208 MainTranslator]: Completed translation [2020-12-09 14:30:10,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:30:10 WrapperNode [2020-12-09 14:30:10,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 14:30:10,293 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 14:30:10,293 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 14:30:10,293 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 14:30:10,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:30:10" (1/1) ... [2020-12-09 14:30:10,312 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:30:10" (1/1) ... [2020-12-09 14:30:10,332 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 14:30:10,333 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 14:30:10,333 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 14:30:10,333 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 14:30:10,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:30:10" (1/1) ... [2020-12-09 14:30:10,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:30:10" (1/1) ... [2020-12-09 14:30:10,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:30:10" (1/1) ... [2020-12-09 14:30:10,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:30:10" (1/1) ... [2020-12-09 14:30:10,351 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:30:10" (1/1) ... [2020-12-09 14:30:10,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:30:10" (1/1) ... [2020-12-09 14:30:10,357 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:30:10" (1/1) ... [2020-12-09 14:30:10,359 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 14:30:10,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 14:30:10,360 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 14:30:10,360 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 14:30:10,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:30:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4c76eb19-55e6-4ba4-b95b-a9a4f52b0cb6/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 14:30:10,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-09 14:30:10,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-09 14:30:10,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-09 14:30:10,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 14:30:10,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-09 14:30:10,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-09 14:30:10,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 14:30:10,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 14:30:10,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 14:30:10,848 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 14:30:10,848 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2020-12-09 14:30:10,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:30:10 BoogieIcfgContainer [2020-12-09 14:30:10,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 14:30:10,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 14:30:10,851 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 14:30:10,854 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 14:30:10,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 02:30:09" (1/3) ... [2020-12-09 14:30:10,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc09f9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:30:10, skipping insertion in model container [2020-12-09 14:30:10,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:30:10" (2/3) ... [2020-12-09 14:30:10,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc09f9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:30:10, skipping insertion in model container [2020-12-09 14:30:10,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:30:10" (3/3) ... [2020-12-09 14:30:10,857 INFO L111 eAbstractionObserver]: Analyzing ICFG splice-2.i [2020-12-09 14:30:10,869 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 14:30:10,872 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 30 error locations. [2020-12-09 14:30:10,882 INFO L253 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2020-12-09 14:30:10,896 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 14:30:10,896 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-09 14:30:10,896 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 14:30:10,896 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 14:30:10,896 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 14:30:10,897 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 14:30:10,897 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 14:30:10,897 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 14:30:10,907 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-12-09 14:30:10,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 14:30:10,911 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:30:10,911 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 14:30:10,912 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 14:30:10,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:30:10,915 INFO L82 PathProgramCache]: Analyzing trace with hash 889599241, now seen corresponding path program 1 times [2020-12-09 14:30:10,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:30:10,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2110078771] [2020-12-09 14:30:10,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4c76eb19-55e6-4ba4-b95b-a9a4f52b0cb6/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-09 14:30:10,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:30:10,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 14:30:10,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:30:11,027 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2020-12-09 14:30:11,028 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:30:11,034 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:30:11,034 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:30:11,035 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-09 14:30:11,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:30:11,053 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:30:11,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2110078771] [2020-12-09 14:30:11,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:30:11,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 14:30:11,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245224062] [2020-12-09 14:30:11,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 14:30:11,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:30:11,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 14:30:11,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 14:30:11,074 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 4 states. [2020-12-09 14:30:11,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:30:11,343 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-12-09 14:30:11,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 14:30:11,344 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-09 14:30:11,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:30:11,350 INFO L225 Difference]: With dead ends: 84 [2020-12-09 14:30:11,350 INFO L226 Difference]: Without dead ends: 78 [2020-12-09 14:30:11,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 14:30:11,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-12-09 14:30:11,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 72. [2020-12-09 14:30:11,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-12-09 14:30:11,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 85 transitions. [2020-12-09 14:30:11,375 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 85 transitions. Word has length 6 [2020-12-09 14:30:11,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:30:11,375 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 85 transitions. [2020-12-09 14:30:11,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 14:30:11,375 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 85 transitions. [2020-12-09 14:30:11,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 14:30:11,376 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:30:11,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 14:30:11,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 14:30:11,578 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 14:30:11,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:30:11,580 INFO L82 PathProgramCache]: Analyzing trace with hash 889599242, now seen corresponding path program 1 times [2020-12-09 14:30:11,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:30:11,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1945375539] [2020-12-09 14:30:11,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4c76eb19-55e6-4ba4-b95b-a9a4f52b0cb6/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-09 14:30:11,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:30:11,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 14:30:11,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:30:11,743 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2020-12-09 14:30:11,744 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:30:11,750 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:30:11,751 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:30:11,751 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-09 14:30:11,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:30:11,773 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:30:11,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1945375539] [2020-12-09 14:30:11,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:30:11,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 14:30:11,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175876643] [2020-12-09 14:30:11,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 14:30:11,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:30:11,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 14:30:11,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 14:30:11,779 INFO L87 Difference]: Start difference. First operand 72 states and 85 transitions. Second operand 4 states. [2020-12-09 14:30:12,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:30:12,013 INFO L93 Difference]: Finished difference Result 86 states and 96 transitions. [2020-12-09 14:30:12,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 14:30:12,014 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-09 14:30:12,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:30:12,015 INFO L225 Difference]: With dead ends: 86 [2020-12-09 14:30:12,015 INFO L226 Difference]: Without dead ends: 86 [2020-12-09 14:30:12,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 14:30:12,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-12-09 14:30:12,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 79. [2020-12-09 14:30:12,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-12-09 14:30:12,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 89 transitions. [2020-12-09 14:30:12,021 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 89 transitions. Word has length 6 [2020-12-09 14:30:12,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:30:12,022 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 89 transitions. [2020-12-09 14:30:12,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 14:30:12,022 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 89 transitions. [2020-12-09 14:30:12,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 14:30:12,022 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:30:12,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:30:12,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 14:30:12,224 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-09 14:30:12,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:30:12,226 INFO L82 PathProgramCache]: Analyzing trace with hash 2102797386, now seen corresponding path program 1 times [2020-12-09 14:30:12,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:30:12,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [557331296] [2020-12-09 14:30:12,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4c76eb19-55e6-4ba4-b95b-a9a4f52b0cb6/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-09 14:30:12,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 14:30:12,322 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 14:30:12,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 14:30:12,367 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 14:30:12,401 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-12-09 14:30:12,401 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 14:30:12,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 14:30:12,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 02:30:12 BoogieIcfgContainer [2020-12-09 14:30:12,641 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 14:30:12,642 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 14:30:12,642 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 14:30:12,642 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 14:30:12,643 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:30:10" (3/4) ... [2020-12-09 14:30:12,646 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 14:30:12,646 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 14:30:12,648 INFO L168 Benchmark]: Toolchain (without parser) took 2654.96 ms. Allocated memory was 58.7 MB in the beginning and 94.4 MB in the end (delta: 35.7 MB). Free memory was 38.8 MB in the beginning and 73.1 MB in the end (delta: -34.3 MB). Peak memory consumption was 901.5 kB. Max. memory is 16.1 GB. [2020-12-09 14:30:12,648 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 58.7 MB. Free memory was 41.3 MB in the beginning and 41.2 MB in the end (delta: 84.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 14:30:12,649 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.89 ms. Allocated memory is still 58.7 MB. Free memory was 38.5 MB in the beginning and 28.2 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 14:30:12,650 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.19 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 28.2 MB in the beginning and 60.7 MB in the end (delta: -32.5 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2020-12-09 14:30:12,651 INFO L168 Benchmark]: Boogie Preprocessor took 26.51 ms. Allocated memory is still 77.6 MB. Free memory was 60.7 MB in the beginning and 59.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 14:30:12,651 INFO L168 Benchmark]: RCFGBuilder took 489.78 ms. Allocated memory is still 77.6 MB. Free memory was 59.0 MB in the beginning and 50.4 MB in the end (delta: 8.6 MB). Peak memory consumption was 22.4 MB. Max. memory is 16.1 GB. [2020-12-09 14:30:12,652 INFO L168 Benchmark]: TraceAbstraction took 1789.79 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 49.8 MB in the beginning and 73.6 MB in the end (delta: -23.8 MB). Peak memory consumption was 26.7 MB. Max. memory is 16.1 GB. [2020-12-09 14:30:12,653 INFO L168 Benchmark]: Witness Printer took 4.85 ms. Allocated memory is still 94.4 MB. Free memory was 73.6 MB in the beginning and 73.1 MB in the end (delta: 421.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 14:30:12,656 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 58.7 MB. Free memory was 41.3 MB in the beginning and 41.2 MB in the end (delta: 84.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 299.89 ms. Allocated memory is still 58.7 MB. Free memory was 38.5 MB in the beginning and 28.2 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.19 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 28.2 MB in the beginning and 60.7 MB in the end (delta: -32.5 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.51 ms. Allocated memory is still 77.6 MB. Free memory was 60.7 MB in the beginning and 59.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 489.78 ms. Allocated memory is still 77.6 MB. Free memory was 59.0 MB in the beginning and 50.4 MB in the end (delta: 8.6 MB). Peak memory consumption was 22.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1789.79 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 49.8 MB in the beginning and 73.6 MB in the end (delta: -23.8 MB). Peak memory consumption was 26.7 MB. Max. memory is 16.1 GB. * Witness Printer took 4.85 ms. Allocated memory is still 94.4 MB. Free memory was 73.6 MB in the beginning and 73.1 MB in the end (delta: 421.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] int flag = 1; [L533] List a = (List) malloc(sizeof(struct node)); [L534] COND FALSE !(a == 0) [L535] List t; [L536] List l1; [L537] List l2; [L538] List b; [L539] List u; [L540] List p = a; [L541] COND FALSE !(__VERIFIER_nondet_int()) [L554] p->h = 3 [L555] EXPR a->h [L555] COND TRUE a->h == 3 [L555] return 0; - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 30 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 79 SDtfs, 236 SDslu, 35 SDs, 0 SdLazy, 154 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 310 SizeOfPredicates, 6 NumberOfNonLiveVariables, 66 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...