./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--atm--lec.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32766717-bd99-4fd6-b8a0-afdb6c2f3361/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32766717-bd99-4fd6-b8a0-afdb6c2f3361/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32766717-bd99-4fd6-b8a0-afdb6c2f3361/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32766717-bd99-4fd6-b8a0-afdb6c2f3361/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--atm--lec.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32766717-bd99-4fd6-b8a0-afdb6c2f3361/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32766717-bd99-4fd6-b8a0-afdb6c2f3361/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0271a94e9583537c53cc956cc665cf103175977e84d74a6d4144b032ac11f321 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:40:35,034 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:40:35,037 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:40:35,076 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:40:35,076 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:40:35,078 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:40:35,080 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:40:35,082 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:40:35,084 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:40:35,085 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:40:35,087 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:40:35,088 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:40:35,089 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:40:35,090 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:40:35,092 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:40:35,094 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:40:35,095 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:40:35,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:40:35,099 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:40:35,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:40:35,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:40:35,118 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:40:35,119 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:40:35,120 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:40:35,124 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:40:35,125 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:40:35,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:40:35,130 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:40:35,131 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:40:35,132 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:40:35,136 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:40:35,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:40:35,139 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:40:35,140 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:40:35,142 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:40:35,143 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:40:35,144 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:40:35,145 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:40:35,145 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:40:35,146 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:40:35,147 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:40:35,148 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32766717-bd99-4fd6-b8a0-afdb6c2f3361/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 01:40:35,195 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:40:35,206 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:40:35,207 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:40:35,207 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:40:35,208 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:40:35,208 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:40:35,208 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:40:35,209 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:40:35,209 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:40:35,209 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:40:35,210 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:40:35,210 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:40:35,211 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:40:35,211 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:40:35,211 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:40:35,211 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:40:35,212 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:40:35,212 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:40:35,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:40:35,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:40:35,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:40:35,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:40:35,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:40:35,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:40:35,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:40:35,215 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:40:35,217 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:40:35,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:40:35,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:40:35,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:40:35,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:40:35,219 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:40:35,219 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:40:35,220 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:40:35,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:40:35,220 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:40:35,220 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:40:35,220 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:40:35,221 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32766717-bd99-4fd6-b8a0-afdb6c2f3361/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32766717-bd99-4fd6-b8a0-afdb6c2f3361/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0271a94e9583537c53cc956cc665cf103175977e84d74a6d4144b032ac11f321 [2021-11-21 01:40:35,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:40:35,545 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:40:35,547 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:40:35,548 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:40:35,549 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:40:35,550 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32766717-bd99-4fd6-b8a0-afdb6c2f3361/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--atm--lec.ko-entry_point.cil.out.i [2021-11-21 01:40:35,647 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32766717-bd99-4fd6-b8a0-afdb6c2f3361/bin/utaipan-TEXQjIfE4P/data/2b0678c2b/8a2effcd358f4447a9223d28252ff5a6/FLAG836378815 [2021-11-21 01:40:36,682 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:40:36,682 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32766717-bd99-4fd6-b8a0-afdb6c2f3361/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--atm--lec.ko-entry_point.cil.out.i [2021-11-21 01:40:36,773 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32766717-bd99-4fd6-b8a0-afdb6c2f3361/bin/utaipan-TEXQjIfE4P/data/2b0678c2b/8a2effcd358f4447a9223d28252ff5a6/FLAG836378815 [2021-11-21 01:40:36,989 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32766717-bd99-4fd6-b8a0-afdb6c2f3361/bin/utaipan-TEXQjIfE4P/data/2b0678c2b/8a2effcd358f4447a9223d28252ff5a6 [2021-11-21 01:40:36,992 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:40:36,995 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:40:36,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:40:36,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:40:37,000 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:40:37,002 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:40:36" (1/1) ... [2021-11-21 01:40:37,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71dcd5a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:40:37, skipping insertion in model container [2021-11-21 01:40:37,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:40:36" (1/1) ... [2021-11-21 01:40:37,012 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:40:37,164 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:40:37,924 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6098] [2021-11-21 01:40:37,925 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6099-6100] [2021-11-21 01:40:38,547 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32766717-bd99-4fd6-b8a0-afdb6c2f3361/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--atm--lec.ko-entry_point.cil.out.i[187542,187555] [2021-11-21 01:40:40,067 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:40:40,126 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:40:40,332 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6098] [2021-11-21 01:40:40,333 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6099-6100] [2021-11-21 01:40:40,344 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32766717-bd99-4fd6-b8a0-afdb6c2f3361/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--atm--lec.ko-entry_point.cil.out.i[187542,187555] [2021-11-21 01:40:40,828 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:40:41,057 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:40:41,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:40:41 WrapperNode [2021-11-21 01:40:41,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:40:41,060 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:40:41,060 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:40:41,060 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:40:41,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:40:41" (1/1) ... [2021-11-21 01:40:41,205 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:40:41" (1/1) ... [2021-11-21 01:40:41,419 INFO L137 Inliner]: procedures = 286, calls = 2896, calls flagged for inlining = 145, calls inlined = 128, statements flattened = 5519 [2021-11-21 01:40:41,420 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:40:41,421 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:40:41,421 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:40:41,422 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:40:41,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:40:41" (1/1) ... [2021-11-21 01:40:41,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:40:41" (1/1) ... [2021-11-21 01:40:41,469 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:40:41" (1/1) ... [2021-11-21 01:40:41,469 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:40:41" (1/1) ... [2021-11-21 01:40:41,607 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:40:41" (1/1) ... [2021-11-21 01:40:41,636 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:40:41" (1/1) ... [2021-11-21 01:40:41,676 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:40:41" (1/1) ... [2021-11-21 01:40:41,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:40:41,799 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:40:41,800 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:40:41,800 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:40:41,801 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:40:41" (1/1) ... [2021-11-21 01:40:41,808 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:40:41,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32766717-bd99-4fd6-b8a0-afdb6c2f3361/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:40:41,834 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32766717-bd99-4fd6-b8a0-afdb6c2f3361/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:40:41,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32766717-bd99-4fd6-b8a0-afdb6c2f3361/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:40:41,870 INFO L130 BoogieDeclarations]: Found specification of procedure skb_dequeue [2021-11-21 01:40:41,871 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_dequeue [2021-11-21 01:40:41,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 01:40:41,871 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_skb [2021-11-21 01:40:41,871 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_skb [2021-11-21 01:40:41,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 01:40:41,872 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 01:40:41,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 01:40:41,872 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-21 01:40:41,872 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-21 01:40:41,872 INFO L130 BoogieDeclarations]: Found specification of procedure send_to_lecd [2021-11-21 01:40:41,873 INFO L138 BoogieDeclarations]: Found implementation of procedure send_to_lecd [2021-11-21 01:40:41,873 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-11-21 01:40:41,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-11-21 01:40:41,873 INFO L130 BoogieDeclarations]: Found specification of procedure __lec_arp_check_expire [2021-11-21 01:40:41,873 INFO L138 BoogieDeclarations]: Found implementation of procedure __lec_arp_check_expire [2021-11-21 01:40:41,873 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 01:40:41,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 01:40:41,874 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-21 01:40:41,874 INFO L130 BoogieDeclarations]: Found specification of procedure lec_seq_stop [2021-11-21 01:40:41,874 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_seq_stop [2021-11-21 01:40:41,874 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-21 01:40:41,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-21 01:40:41,875 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_sub [2021-11-21 01:40:41,875 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_sub [2021-11-21 01:40:41,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 01:40:41,875 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 01:40:41,875 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-21 01:40:41,876 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-21 01:40:41,876 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-21 01:40:41,876 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-21 01:40:41,876 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2021-11-21 01:40:41,876 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2021-11-21 01:40:41,877 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_find [2021-11-21 01:40:41,877 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_find [2021-11-21 01:40:41,877 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-21 01:40:41,877 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-21 01:40:41,877 INFO L130 BoogieDeclarations]: Found specification of procedure sk_atm [2021-11-21 01:40:41,877 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_atm [2021-11-21 01:40:41,878 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2021-11-21 01:40:41,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2021-11-21 01:40:41,878 INFO L130 BoogieDeclarations]: Found specification of procedure atm_may_send [2021-11-21 01:40:41,878 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_may_send [2021-11-21 01:40:41,878 INFO L130 BoogieDeclarations]: Found specification of procedure lec_seq_open [2021-11-21 01:40:41,879 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_seq_open [2021-11-21 01:40:41,879 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-21 01:40:41,879 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-21 01:40:41,879 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-11-21 01:40:41,879 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-11-21 01:40:41,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:40:41,880 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-21 01:40:41,880 INFO L130 BoogieDeclarations]: Found specification of procedure lec_tx_timeout [2021-11-21 01:40:41,880 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_tx_timeout [2021-11-21 01:40:41,880 INFO L130 BoogieDeclarations]: Found specification of procedure hlist_empty [2021-11-21 01:40:41,880 INFO L138 BoogieDeclarations]: Found implementation of procedure hlist_empty [2021-11-21 01:40:41,881 INFO L130 BoogieDeclarations]: Found specification of procedure lec_flush_complete [2021-11-21 01:40:41,881 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_flush_complete [2021-11-21 01:40:41,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:40:41,881 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-21 01:40:41,881 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-21 01:40:41,882 INFO L130 BoogieDeclarations]: Found specification of procedure lec_send [2021-11-21 01:40:41,882 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_send [2021-11-21 01:40:41,882 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-21 01:40:41,882 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-21 01:40:41,882 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-21 01:40:41,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:40:41,883 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add [2021-11-21 01:40:41,883 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add [2021-11-21 01:40:41,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:40:41,883 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2021-11-21 01:40:41,883 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2021-11-21 01:40:41,884 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-21 01:40:41,884 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-21 01:40:41,884 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-21 01:40:41,884 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-21 01:40:41,884 INFO L130 BoogieDeclarations]: Found specification of procedure lec_tbl_walk [2021-11-21 01:40:41,884 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_tbl_walk [2021-11-21 01:40:41,885 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-21 01:40:41,885 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-21 01:40:41,885 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-21 01:40:41,885 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-21 01:40:41,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 01:40:41,886 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-21 01:40:41,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-21 01:40:41,886 INFO L130 BoogieDeclarations]: Found specification of procedure atm_force_charge [2021-11-21 01:40:41,886 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_force_charge [2021-11-21 01:40:41,886 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-21 01:40:41,887 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-21 01:40:41,887 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_check_expire [2021-11-21 01:40:41,887 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_check_expire [2021-11-21 01:40:41,887 INFO L130 BoogieDeclarations]: Found specification of procedure atm_return [2021-11-21 01:40:41,887 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_return [2021-11-21 01:40:41,887 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-21 01:40:41,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-21 01:40:41,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 01:40:41,888 INFO L130 BoogieDeclarations]: Found specification of procedure dev_put [2021-11-21 01:40:41,888 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_put [2021-11-21 01:40:41,888 INFO L130 BoogieDeclarations]: Found specification of procedure lec_get_idx [2021-11-21 01:40:41,888 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_get_idx [2021-11-21 01:40:41,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:40:41,889 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_add [2021-11-21 01:40:41,889 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_add [2021-11-21 01:40:41,889 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-21 01:40:41,889 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-21 01:40:41,890 INFO L130 BoogieDeclarations]: Found specification of procedure hlist_add_head [2021-11-21 01:40:41,890 INFO L138 BoogieDeclarations]: Found implementation of procedure hlist_add_head [2021-11-21 01:40:41,890 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-21 01:40:41,890 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-21 01:40:41,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 01:40:41,890 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 01:40:41,891 INFO L130 BoogieDeclarations]: Found specification of procedure lec_change_mtu [2021-11-21 01:40:41,891 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_change_mtu [2021-11-21 01:40:41,891 INFO L130 BoogieDeclarations]: Found specification of procedure ether_addr_copy [2021-11-21 01:40:41,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ether_addr_copy [2021-11-21 01:40:41,891 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-21 01:40:41,892 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-21 01:40:41,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-21 01:40:41,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-21 01:40:41,892 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2021-11-21 01:40:41,892 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2021-11-21 01:40:41,892 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 01:40:41,893 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 01:40:41,893 INFO L130 BoogieDeclarations]: Found specification of procedure lec_seq_show [2021-11-21 01:40:41,893 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_seq_show [2021-11-21 01:40:41,893 INFO L130 BoogieDeclarations]: Found specification of procedure vcc_release_async [2021-11-21 01:40:41,893 INFO L138 BoogieDeclarations]: Found implementation of procedure vcc_release_async [2021-11-21 01:40:41,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:40:41,894 INFO L130 BoogieDeclarations]: Found specification of procedure hlist_del [2021-11-21 01:40:41,894 INFO L138 BoogieDeclarations]: Found implementation of procedure hlist_del [2021-11-21 01:40:41,894 INFO L130 BoogieDeclarations]: Found specification of procedure seq_release_private [2021-11-21 01:40:41,894 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_release_private [2021-11-21 01:40:41,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 01:40:41,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 01:40:41,895 INFO L130 BoogieDeclarations]: Found specification of procedure lec_set_multicast_list [2021-11-21 01:40:41,895 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_set_multicast_list [2021-11-21 01:40:41,895 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_put [2021-11-21 01:40:41,895 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_put [2021-11-21 01:40:41,895 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_hold [2021-11-21 01:40:41,896 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_hold [2021-11-21 01:40:41,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:40:41,896 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2021-11-21 01:40:41,896 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2021-11-21 01:40:41,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:40:41,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:40:41,897 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-21 01:40:41,897 INFO L130 BoogieDeclarations]: Found specification of procedure ether_addr_equal [2021-11-21 01:40:41,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ether_addr_equal [2021-11-21 01:40:41,897 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 01:40:41,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 01:40:41,898 INFO L130 BoogieDeclarations]: Found specification of procedure lec_atm_send [2021-11-21 01:40:41,898 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_atm_send [2021-11-21 01:40:41,898 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2021-11-21 01:40:41,898 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2021-11-21 01:40:41,898 INFO L130 BoogieDeclarations]: Found specification of procedure kmemdup [2021-11-21 01:40:41,899 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemdup [2021-11-21 01:40:41,899 INFO L130 BoogieDeclarations]: Found specification of procedure lec_atm_close [2021-11-21 01:40:41,899 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_atm_close [2021-11-21 01:40:41,899 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-21 01:40:41,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-21 01:40:41,900 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2021-11-21 01:40:41,900 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2021-11-21 01:40:41,900 INFO L130 BoogieDeclarations]: Found specification of procedure make_entry [2021-11-21 01:40:41,900 INFO L138 BoogieDeclarations]: Found implementation of procedure make_entry [2021-11-21 01:40:41,900 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-21 01:40:41,900 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-21 01:40:41,901 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_remove [2021-11-21 01:40:41,901 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_remove [2021-11-21 01:40:41,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:40:41,901 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_update [2021-11-21 01:40:41,901 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_update [2021-11-21 01:40:41,901 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_clear_vccs [2021-11-21 01:40:41,902 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_clear_vccs [2021-11-21 01:40:41,902 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_to_linear_data [2021-11-21 01:40:41,902 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_to_linear_data [2021-11-21 01:40:41,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:40:41,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:40:42,825 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:40:42,830 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:40:43,177 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 01:40:51,184 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-21 01:40:54,032 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##30: assume !(0 != (lec_addr_delete_~____ptr___0~4#1.base + lec_addr_delete_~____ptr___0~4#1.offset) % 18446744073709551616);lec_addr_delete_~tmp___2~14#1.base, lec_addr_delete_~tmp___2~14#1.offset := 0, 0;lec_addr_delete_~entry~10#1.base, lec_addr_delete_~entry~10#1.offset := lec_addr_delete_~tmp___2~14#1.base, lec_addr_delete_~tmp___2~14#1.offset; [2021-11-21 01:40:54,032 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##29: assume 0 != (lec_addr_delete_~____ptr___0~4#1.base + lec_addr_delete_~____ptr___0~4#1.offset) % 18446744073709551616;lec_addr_delete_~__mptr___0~5#1.base, lec_addr_delete_~__mptr___0~5#1.offset := lec_addr_delete_~____ptr___0~4#1.base, lec_addr_delete_~____ptr___0~4#1.offset;lec_addr_delete_~tmp___2~14#1.base, lec_addr_delete_~tmp___2~14#1.offset := lec_addr_delete_~__mptr___0~5#1.base, lec_addr_delete_~__mptr___0~5#1.offset; [2021-11-21 01:41:00,318 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:41:01,832 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:41:01,832 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 01:41:01,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:41:01 BoogieIcfgContainer [2021-11-21 01:41:01,840 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:41:01,842 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:41:01,842 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:41:01,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:41:01,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:40:36" (1/3) ... [2021-11-21 01:41:01,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@116008fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:41:01, skipping insertion in model container [2021-11-21 01:41:01,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:40:41" (2/3) ... [2021-11-21 01:41:01,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@116008fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:41:01, skipping insertion in model container [2021-11-21 01:41:01,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:41:01" (3/3) ... [2021-11-21 01:41:01,850 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--atm--lec.ko-entry_point.cil.out.i [2021-11-21 01:41:01,857 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:41:01,857 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:41:01,934 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:41:01,949 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:41:01,950 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:41:02,021 INFO L276 IsEmpty]: Start isEmpty. Operand has 1178 states, 738 states have (on average 1.3699186991869918) internal successors, (1011), 778 states have internal predecessors, (1011), 361 states have call successors, (361), 78 states have call predecessors, (361), 77 states have return successors, (352), 342 states have call predecessors, (352), 352 states have call successors, (352) [2021-11-21 01:41:02,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-21 01:41:02,051 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:41:02,052 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:41:02,053 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:41:02,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:41:02,060 INFO L85 PathProgramCache]: Analyzing trace with hash -251849835, now seen corresponding path program 1 times [2021-11-21 01:41:02,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:41:02,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619013204] [2021-11-21 01:41:02,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:41:02,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:41:02,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:41:02,841 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-11-21 01:41:02,842 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:41:02,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619013204] [2021-11-21 01:41:02,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619013204] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:41:02,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:41:02,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:41:02,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323184525] [2021-11-21 01:41:02,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:41:02,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:41:02,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:41:02,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:41:02,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:41:02,921 INFO L87 Difference]: Start difference. First operand has 1178 states, 738 states have (on average 1.3699186991869918) internal successors, (1011), 778 states have internal predecessors, (1011), 361 states have call successors, (361), 78 states have call predecessors, (361), 77 states have return successors, (352), 342 states have call predecessors, (352), 352 states have call successors, (352) Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-21 01:41:08,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:41:08,273 INFO L93 Difference]: Finished difference Result 3430 states and 5106 transitions. [2021-11-21 01:41:08,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:41:08,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 82 [2021-11-21 01:41:08,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:41:08,330 INFO L225 Difference]: With dead ends: 3430 [2021-11-21 01:41:08,330 INFO L226 Difference]: Without dead ends: 2240 [2021-11-21 01:41:08,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:41:08,356 INFO L933 BasicCegarLoop]: 1802 mSDtfsCounter, 1621 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1621 SdHoareTripleChecker+Valid, 3248 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:41:08,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1621 Valid, 3248 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2021-11-21 01:41:08,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2240 states. [2021-11-21 01:41:08,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2240 to 2237. [2021-11-21 01:41:08,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2237 states, 1416 states have (on average 1.3573446327683616) internal successors, (1922), 1474 states have internal predecessors, (1922), 669 states have call successors, (669), 152 states have call predecessors, (669), 151 states have return successors, (668), 648 states have call predecessors, (668), 668 states have call successors, (668) [2021-11-21 01:41:08,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2237 states to 2237 states and 3259 transitions. [2021-11-21 01:41:08,686 INFO L78 Accepts]: Start accepts. Automaton has 2237 states and 3259 transitions. Word has length 82 [2021-11-21 01:41:08,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:41:08,688 INFO L470 AbstractCegarLoop]: Abstraction has 2237 states and 3259 transitions. [2021-11-21 01:41:08,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-21 01:41:08,690 INFO L276 IsEmpty]: Start isEmpty. Operand 2237 states and 3259 transitions. [2021-11-21 01:41:08,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-21 01:41:08,708 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:41:08,709 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:41:08,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:41:08,710 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:41:08,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:41:08,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1619199452, now seen corresponding path program 1 times [2021-11-21 01:41:08,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:41:08,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646237091] [2021-11-21 01:41:08,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:41:08,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:41:08,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:41:09,142 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-11-21 01:41:09,142 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:41:09,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646237091] [2021-11-21 01:41:09,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646237091] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:41:09,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:41:09,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:41:09,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000854098] [2021-11-21 01:41:09,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:41:09,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:41:09,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:41:09,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:41:09,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:41:09,146 INFO L87 Difference]: Start difference. First operand 2237 states and 3259 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-21 01:41:10,746 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:14,005 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:15,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:41:15,770 INFO L93 Difference]: Finished difference Result 6321 states and 9181 transitions. [2021-11-21 01:41:15,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:41:15,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 86 [2021-11-21 01:41:15,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:41:15,819 INFO L225 Difference]: With dead ends: 6321 [2021-11-21 01:41:15,819 INFO L226 Difference]: Without dead ends: 4105 [2021-11-21 01:41:15,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:41:15,836 INFO L933 BasicCegarLoop]: 1792 mSDtfsCounter, 1412 mSDsluCounter, 1655 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1412 SdHoareTripleChecker+Valid, 3218 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:41:15,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1412 Valid, 3218 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 472 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2021-11-21 01:41:15,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4105 states. [2021-11-21 01:41:16,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4105 to 4102. [2021-11-21 01:41:16,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4102 states, 2601 states have (on average 1.3610149942329872) internal successors, (3540), 2711 states have internal predecessors, (3540), 1205 states have call successors, (1205), 296 states have call predecessors, (1205), 295 states have return successors, (1204), 1166 states have call predecessors, (1204), 1204 states have call successors, (1204) [2021-11-21 01:41:16,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4102 states to 4102 states and 5949 transitions. [2021-11-21 01:41:16,221 INFO L78 Accepts]: Start accepts. Automaton has 4102 states and 5949 transitions. Word has length 86 [2021-11-21 01:41:16,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:41:16,224 INFO L470 AbstractCegarLoop]: Abstraction has 4102 states and 5949 transitions. [2021-11-21 01:41:16,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-21 01:41:16,224 INFO L276 IsEmpty]: Start isEmpty. Operand 4102 states and 5949 transitions. [2021-11-21 01:41:16,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-21 01:41:16,229 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:41:16,230 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:41:16,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:41:16,230 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:41:16,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:41:16,231 INFO L85 PathProgramCache]: Analyzing trace with hash -249183472, now seen corresponding path program 1 times [2021-11-21 01:41:16,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:41:16,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872528695] [2021-11-21 01:41:16,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:41:16,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:41:16,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:41:16,619 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-11-21 01:41:16,619 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:41:16,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872528695] [2021-11-21 01:41:16,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872528695] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:41:16,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:41:16,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:41:16,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067975063] [2021-11-21 01:41:16,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:41:16,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:41:16,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:41:16,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:41:16,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:41:16,623 INFO L87 Difference]: Start difference. First operand 4102 states and 5949 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-21 01:41:19,614 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:21,696 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:24,597 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:32,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:41:32,373 INFO L93 Difference]: Finished difference Result 16311 states and 23922 transitions. [2021-11-21 01:41:32,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:41:32,374 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 91 [2021-11-21 01:41:32,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:41:32,520 INFO L225 Difference]: With dead ends: 16311 [2021-11-21 01:41:32,520 INFO L226 Difference]: Without dead ends: 12236 [2021-11-21 01:41:32,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:41:32,562 INFO L933 BasicCegarLoop]: 2142 mSDtfsCounter, 4291 mSDsluCounter, 2712 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 684 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4291 SdHoareTripleChecker+Valid, 4399 SdHoareTripleChecker+Invalid, 2084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 684 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:41:32,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4291 Valid, 4399 Invalid, 2084 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [684 Valid, 1398 Invalid, 2 Unknown, 0 Unchecked, 14.9s Time] [2021-11-21 01:41:32,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12236 states. [2021-11-21 01:41:33,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12236 to 12206. [2021-11-21 01:41:33,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12206 states, 7763 states have (on average 1.3610717506118768) internal successors, (10566), 8069 states have internal predecessors, (10566), 3567 states have call successors, (3567), 876 states have call predecessors, (3567), 875 states have return successors, (3822), 3460 states have call predecessors, (3822), 3566 states have call successors, (3822) [2021-11-21 01:41:33,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12206 states to 12206 states and 17955 transitions. [2021-11-21 01:41:33,484 INFO L78 Accepts]: Start accepts. Automaton has 12206 states and 17955 transitions. Word has length 91 [2021-11-21 01:41:33,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:41:33,486 INFO L470 AbstractCegarLoop]: Abstraction has 12206 states and 17955 transitions. [2021-11-21 01:41:33,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-21 01:41:33,487 INFO L276 IsEmpty]: Start isEmpty. Operand 12206 states and 17955 transitions. [2021-11-21 01:41:33,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-21 01:41:33,491 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:41:33,492 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:41:33,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:41:33,492 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:41:33,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:41:33,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1122604520, now seen corresponding path program 1 times [2021-11-21 01:41:33,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:41:33,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261186640] [2021-11-21 01:41:33,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:41:33,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:41:33,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:41:33,875 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-11-21 01:41:33,876 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:41:33,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261186640] [2021-11-21 01:41:33,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261186640] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:41:33,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:41:33,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:41:33,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354715566] [2021-11-21 01:41:33,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:41:33,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:41:33,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:41:33,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:41:33,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:41:33,878 INFO L87 Difference]: Start difference. First operand 12206 states and 17955 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-21 01:41:37,362 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:44,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:41:44,895 INFO L93 Difference]: Finished difference Result 48711 states and 72378 transitions. [2021-11-21 01:41:44,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:41:44,902 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 89 [2021-11-21 01:41:44,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:41:45,223 INFO L225 Difference]: With dead ends: 48711 [2021-11-21 01:41:45,223 INFO L226 Difference]: Without dead ends: 36532 [2021-11-21 01:41:45,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:41:45,327 INFO L933 BasicCegarLoop]: 2142 mSDtfsCounter, 4292 mSDsluCounter, 2709 mSDsCounter, 0 mSdLazyCounter, 1397 mSolverCounterSat, 684 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4292 SdHoareTripleChecker+Valid, 4399 SdHoareTripleChecker+Invalid, 2082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 684 IncrementalHoareTripleChecker+Valid, 1397 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:41:45,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4292 Valid, 4399 Invalid, 2082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [684 Valid, 1397 Invalid, 1 Unknown, 0 Unchecked, 9.8s Time] [2021-11-21 01:41:45,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36532 states. [2021-11-21 01:41:47,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36532 to 36502. [2021-11-21 01:41:47,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36502 states, 23249 states have (on average 1.3602305475504324) internal successors, (31624), 24127 states have internal predecessors, (31624), 10637 states have call successors, (10637), 2616 states have call predecessors, (10637), 2615 states have return successors, (12124), 10342 states have call predecessors, (12124), 10636 states have call successors, (12124) [2021-11-21 01:41:47,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36502 states to 36502 states and 54385 transitions. [2021-11-21 01:41:47,740 INFO L78 Accepts]: Start accepts. Automaton has 36502 states and 54385 transitions. Word has length 89 [2021-11-21 01:41:47,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:41:47,740 INFO L470 AbstractCegarLoop]: Abstraction has 36502 states and 54385 transitions. [2021-11-21 01:41:47,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-21 01:41:47,741 INFO L276 IsEmpty]: Start isEmpty. Operand 36502 states and 54385 transitions. [2021-11-21 01:41:47,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-21 01:41:47,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:41:47,744 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:41:47,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 01:41:47,744 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:41:47,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:41:47,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1499219906, now seen corresponding path program 1 times [2021-11-21 01:41:47,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:41:47,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976417077] [2021-11-21 01:41:47,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:41:47,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:41:47,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:41:48,036 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-11-21 01:41:48,036 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:41:48,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976417077] [2021-11-21 01:41:48,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976417077] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:41:48,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:41:48,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:41:48,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245278136] [2021-11-21 01:41:48,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:41:48,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:41:48,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:41:48,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:41:48,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:41:48,039 INFO L87 Difference]: Start difference. First operand 36502 states and 54385 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-21 01:41:51,937 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:00,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:42:00,460 INFO L93 Difference]: Finished difference Result 145847 states and 218074 transitions. [2021-11-21 01:42:00,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:42:00,461 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 92 [2021-11-21 01:42:00,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:42:01,204 INFO L225 Difference]: With dead ends: 145847 [2021-11-21 01:42:01,205 INFO L226 Difference]: Without dead ends: 109372 [2021-11-21 01:42:01,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:42:01,575 INFO L933 BasicCegarLoop]: 2143 mSDtfsCounter, 3329 mSDsluCounter, 4356 mSDsCounter, 0 mSdLazyCounter, 1662 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3329 SdHoareTripleChecker+Valid, 5823 SdHoareTripleChecker+Invalid, 1670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1662 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:42:01,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3329 Valid, 5823 Invalid, 1670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1662 Invalid, 1 Unknown, 0 Unchecked, 9.1s Time] [2021-11-21 01:42:01,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109372 states. [2021-11-21 01:42:07,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109372 to 109270. [2021-11-21 01:42:07,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109270 states, 69635 states have (on average 1.3584835212177784) internal successors, (94598), 72181 states have internal predecessors, (94598), 31799 states have call successors, (31799), 7836 states have call predecessors, (31799), 7835 states have return successors, (37054), 30988 states have call predecessors, (37054), 31798 states have call successors, (37054) [2021-11-21 01:42:08,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109270 states to 109270 states and 163451 transitions. [2021-11-21 01:42:08,273 INFO L78 Accepts]: Start accepts. Automaton has 109270 states and 163451 transitions. Word has length 92 [2021-11-21 01:42:08,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:42:08,273 INFO L470 AbstractCegarLoop]: Abstraction has 109270 states and 163451 transitions. [2021-11-21 01:42:08,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-21 01:42:08,274 INFO L276 IsEmpty]: Start isEmpty. Operand 109270 states and 163451 transitions. [2021-11-21 01:42:08,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-21 01:42:08,280 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:42:08,280 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:42:08,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 01:42:08,280 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:42:08,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:42:08,281 INFO L85 PathProgramCache]: Analyzing trace with hash 158968774, now seen corresponding path program 1 times [2021-11-21 01:42:08,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:42:08,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573762060] [2021-11-21 01:42:08,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:42:08,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:42:08,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:42:08,979 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-11-21 01:42:08,980 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:42:08,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573762060] [2021-11-21 01:42:08,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573762060] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:42:08,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:42:08,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:42:08,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105721469] [2021-11-21 01:42:08,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:42:08,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:42:08,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:42:08,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:42:08,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:42:08,982 INFO L87 Difference]: Start difference. First operand 109270 states and 163451 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-21 01:42:13,830 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:23,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:42:23,596 INFO L93 Difference]: Finished difference Result 258747 states and 387620 transitions. [2021-11-21 01:42:23,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:42:23,596 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 90 [2021-11-21 01:42:23,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:42:25,130 INFO L225 Difference]: With dead ends: 258747 [2021-11-21 01:42:25,131 INFO L226 Difference]: Without dead ends: 149504 [2021-11-21 01:42:25,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:42:25,484 INFO L933 BasicCegarLoop]: 2142 mSDtfsCounter, 4293 mSDsluCounter, 2711 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 684 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4293 SdHoareTripleChecker+Valid, 4399 SdHoareTripleChecker+Invalid, 2083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 684 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:42:25,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4293 Valid, 4399 Invalid, 2083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [684 Valid, 1398 Invalid, 1 Unknown, 0 Unchecked, 9.3s Time] [2021-11-21 01:42:25,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149504 states. [2021-11-21 01:42:31,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149504 to 149474. [2021-11-21 01:42:31,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149474 states, 95289 states have (on average 1.3581000954989557) internal successors, (129412), 98703 states have internal predecessors, (129412), 43453 states have call successors, (43453), 10716 states have call predecessors, (43453), 10731 states have return successors, (51166), 42426 states have call predecessors, (51166), 43452 states have call successors, (51166) [2021-11-21 01:42:32,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149474 states to 149474 states and 224031 transitions. [2021-11-21 01:42:33,005 INFO L78 Accepts]: Start accepts. Automaton has 149474 states and 224031 transitions. Word has length 90 [2021-11-21 01:42:33,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:42:33,006 INFO L470 AbstractCegarLoop]: Abstraction has 149474 states and 224031 transitions. [2021-11-21 01:42:33,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-21 01:42:33,007 INFO L276 IsEmpty]: Start isEmpty. Operand 149474 states and 224031 transitions. [2021-11-21 01:42:33,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-21 01:42:33,010 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:42:33,010 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:42:33,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 01:42:33,010 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:42:33,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:42:33,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1075133706, now seen corresponding path program 1 times [2021-11-21 01:42:33,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:42:33,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038405170] [2021-11-21 01:42:33,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:42:33,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:42:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:42:33,254 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-21 01:42:33,255 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:42:33,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038405170] [2021-11-21 01:42:33,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038405170] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:42:33,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:42:33,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:42:33,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812708899] [2021-11-21 01:42:33,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:42:33,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:42:33,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:42:33,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:42:33,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:42:33,258 INFO L87 Difference]: Start difference. First operand 149474 states and 224031 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-21 01:42:35,512 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:48,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:42:48,267 INFO L93 Difference]: Finished difference Result 419360 states and 626512 transitions. [2021-11-21 01:42:48,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:42:48,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 101 [2021-11-21 01:42:48,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:42:50,539 INFO L225 Difference]: With dead ends: 419360 [2021-11-21 01:42:50,539 INFO L226 Difference]: Without dead ends: 269913 [2021-11-21 01:42:51,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:42:51,181 INFO L933 BasicCegarLoop]: 1735 mSDtfsCounter, 1375 mSDsluCounter, 1621 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1378 SdHoareTripleChecker+Valid, 3133 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:42:51,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1378 Valid, 3133 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 493 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2021-11-21 01:42:51,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269913 states.