./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 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3810e319-0493-42c7-a409-894f20cbd8d7/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3810e319-0493-42c7-a409-894f20cbd8d7/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3810e319-0493-42c7-a409-894f20cbd8d7/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3810e319-0493-42c7-a409-894f20cbd8d7/bin/utaipan-eEHZpOm5b7/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_3810e319-0493-42c7-a409-894f20cbd8d7/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3810e319-0493-42c7-a409-894f20cbd8d7/bin/utaipan-eEHZpOm5b7 --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 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:31:21,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:31:21,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:31:21,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:31:21,714 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:31:21,718 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:31:21,720 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:31:21,724 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:31:21,727 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:31:21,733 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:31:21,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:31:21,736 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:31:21,737 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:31:21,740 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:31:21,743 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:31:21,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:31:21,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:31:21,747 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:31:21,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:31:21,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:31:21,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:31:21,756 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:31:21,757 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:31:21,758 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:31:21,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:31:21,763 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:31:21,763 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:31:21,764 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:31:21,765 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:31:21,766 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:31:21,767 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:31:21,768 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:31:21,768 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:31:21,769 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:31:21,771 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:31:21,771 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:31:21,772 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:31:21,772 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:31:21,773 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:31:21,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:31:21,775 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:31:21,776 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3810e319-0493-42c7-a409-894f20cbd8d7/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 19:31:21,806 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:31:21,807 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:31:21,807 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:31:21,807 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:31:21,808 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:31:21,808 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:31:21,808 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:31:21,808 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:31:21,808 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:31:21,809 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:31:21,809 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:31:21,809 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:31:21,809 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:31:21,809 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:31:21,810 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:31:21,810 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:31:21,810 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:31:21,810 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:31:21,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:31:21,811 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:31:21,812 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:31:21,812 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:31:21,812 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:31:21,812 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:31:21,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:31:21,813 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:31:21,813 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:31:21,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:31:21,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:31:21,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:31:21,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:31:21,814 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:31:21,814 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:31:21,815 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:31:21,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:31:21,815 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:31:21,815 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:31:21,815 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:31:21,816 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_3810e319-0493-42c7-a409-894f20cbd8d7/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3810e319-0493-42c7-a409-894f20cbd8d7/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0271a94e9583537c53cc956cc665cf103175977e84d74a6d4144b032ac11f321 [2021-11-25 19:31:22,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:31:22,087 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:31:22,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:31:22,091 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:31:22,092 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:31:22,093 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3810e319-0493-42c7-a409-894f20cbd8d7/bin/utaipan-eEHZpOm5b7/../../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 [2021-11-25 19:31:22,173 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3810e319-0493-42c7-a409-894f20cbd8d7/bin/utaipan-eEHZpOm5b7/data/b403ec50c/67139202244c403991b4da58423a5de8/FLAG662529298 [2021-11-25 19:31:23,175 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:31:23,176 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3810e319-0493-42c7-a409-894f20cbd8d7/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 [2021-11-25 19:31:23,232 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3810e319-0493-42c7-a409-894f20cbd8d7/bin/utaipan-eEHZpOm5b7/data/b403ec50c/67139202244c403991b4da58423a5de8/FLAG662529298 [2021-11-25 19:31:23,551 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3810e319-0493-42c7-a409-894f20cbd8d7/bin/utaipan-eEHZpOm5b7/data/b403ec50c/67139202244c403991b4da58423a5de8 [2021-11-25 19:31:23,554 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:31:23,555 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:31:23,557 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:31:23,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:31:23,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:31:23,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:31:23" (1/1) ... [2021-11-25 19:31:23,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3edb2c68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:31:23, skipping insertion in model container [2021-11-25 19:31:23,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:31:23" (1/1) ... [2021-11-25 19:31:23,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:31:23,735 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:31:24,479 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6098] [2021-11-25 19:31:24,480 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] [2021-11-25 19:31:25,217 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_3810e319-0493-42c7-a409-894f20cbd8d7/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] [2021-11-25 19:31:26,940 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:31:26,992 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:31:27,124 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6098] [2021-11-25 19:31:27,125 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] [2021-11-25 19:31:27,173 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_3810e319-0493-42c7-a409-894f20cbd8d7/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] [2021-11-25 19:31:27,575 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:31:27,714 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:31:27,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:31:27 WrapperNode [2021-11-25 19:31:27,715 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:31:27,716 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:31:27,717 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:31:27,717 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:31:27,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:31:27" (1/1) ... [2021-11-25 19:31:27,834 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:31:27" (1/1) ... [2021-11-25 19:31:28,110 INFO L137 Inliner]: procedures = 286, calls = 2896, calls flagged for inlining = 145, calls inlined = 128, statements flattened = 5519 [2021-11-25 19:31:28,111 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:31:28,112 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:31:28,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:31:28,113 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:31:28,125 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:31:27" (1/1) ... [2021-11-25 19:31:28,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:31:27" (1/1) ... [2021-11-25 19:31:28,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:31:27" (1/1) ... [2021-11-25 19:31:28,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:31:27" (1/1) ... [2021-11-25 19:31:28,434 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:31:27" (1/1) ... [2021-11-25 19:31:28,476 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:31:27" (1/1) ... [2021-11-25 19:31:28,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:31:27" (1/1) ... [2021-11-25 19:31:28,548 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:31:28,549 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:31:28,549 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:31:28,550 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:31:28,551 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:31:27" (1/1) ... [2021-11-25 19:31:28,561 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:31:28,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3810e319-0493-42c7-a409-894f20cbd8d7/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:31:28,585 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3810e319-0493-42c7-a409-894f20cbd8d7/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:31:28,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3810e319-0493-42c7-a409-894f20cbd8d7/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:31:28,631 INFO L130 BoogieDeclarations]: Found specification of procedure skb_dequeue [2021-11-25 19:31:28,631 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_dequeue [2021-11-25 19:31:28,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 19:31:28,632 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_skb [2021-11-25 19:31:28,632 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_skb [2021-11-25 19:31:28,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 19:31:28,632 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 19:31:28,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 19:31:28,633 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-25 19:31:28,633 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-25 19:31:28,633 INFO L130 BoogieDeclarations]: Found specification of procedure send_to_lecd [2021-11-25 19:31:28,633 INFO L138 BoogieDeclarations]: Found implementation of procedure send_to_lecd [2021-11-25 19:31:28,634 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-11-25 19:31:28,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-11-25 19:31:28,634 INFO L130 BoogieDeclarations]: Found specification of procedure __lec_arp_check_expire [2021-11-25 19:31:28,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __lec_arp_check_expire [2021-11-25 19:31:28,634 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 19:31:28,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 19:31:28,635 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-25 19:31:28,635 INFO L130 BoogieDeclarations]: Found specification of procedure lec_seq_stop [2021-11-25 19:31:28,635 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_seq_stop [2021-11-25 19:31:28,701 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-25 19:31:28,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-25 19:31:28,701 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_sub [2021-11-25 19:31:28,701 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_sub [2021-11-25 19:31:28,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 19:31:28,701 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 19:31:28,702 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 19:31:28,702 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 19:31:28,702 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-25 19:31:28,702 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-25 19:31:28,702 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2021-11-25 19:31:28,702 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2021-11-25 19:31:28,702 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_find [2021-11-25 19:31:28,702 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_find [2021-11-25 19:31:28,702 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-25 19:31:28,703 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-25 19:31:28,703 INFO L130 BoogieDeclarations]: Found specification of procedure sk_atm [2021-11-25 19:31:28,703 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_atm [2021-11-25 19:31:28,703 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2021-11-25 19:31:28,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2021-11-25 19:31:28,703 INFO L130 BoogieDeclarations]: Found specification of procedure atm_may_send [2021-11-25 19:31:28,703 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_may_send [2021-11-25 19:31:28,703 INFO L130 BoogieDeclarations]: Found specification of procedure lec_seq_open [2021-11-25 19:31:28,703 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_seq_open [2021-11-25 19:31:28,704 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-25 19:31:28,704 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-25 19:31:28,704 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-11-25 19:31:28,704 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-11-25 19:31:28,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:31:28,704 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-25 19:31:28,704 INFO L130 BoogieDeclarations]: Found specification of procedure lec_tx_timeout [2021-11-25 19:31:28,704 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_tx_timeout [2021-11-25 19:31:28,704 INFO L130 BoogieDeclarations]: Found specification of procedure hlist_empty [2021-11-25 19:31:28,705 INFO L138 BoogieDeclarations]: Found implementation of procedure hlist_empty [2021-11-25 19:31:28,705 INFO L130 BoogieDeclarations]: Found specification of procedure lec_flush_complete [2021-11-25 19:31:28,705 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_flush_complete [2021-11-25 19:31:28,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:31:28,705 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-25 19:31:28,705 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-25 19:31:28,705 INFO L130 BoogieDeclarations]: Found specification of procedure lec_send [2021-11-25 19:31:28,705 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_send [2021-11-25 19:31:28,705 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-25 19:31:28,706 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-25 19:31:28,706 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-25 19:31:28,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:31:28,706 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add [2021-11-25 19:31:28,706 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add [2021-11-25 19:31:28,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 19:31:28,706 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2021-11-25 19:31:28,706 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2021-11-25 19:31:28,706 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-25 19:31:28,706 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-25 19:31:28,706 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-25 19:31:28,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-25 19:31:28,707 INFO L130 BoogieDeclarations]: Found specification of procedure lec_tbl_walk [2021-11-25 19:31:28,707 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_tbl_walk [2021-11-25 19:31:28,707 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 19:31:28,707 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 19:31:28,707 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 19:31:28,707 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 19:31:28,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 19:31:28,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-25 19:31:28,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-25 19:31:28,707 INFO L130 BoogieDeclarations]: Found specification of procedure atm_force_charge [2021-11-25 19:31:28,708 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_force_charge [2021-11-25 19:31:28,708 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-25 19:31:28,708 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-25 19:31:28,708 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_check_expire [2021-11-25 19:31:28,708 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_check_expire [2021-11-25 19:31:28,708 INFO L130 BoogieDeclarations]: Found specification of procedure atm_return [2021-11-25 19:31:28,708 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_return [2021-11-25 19:31:28,708 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-25 19:31:28,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-25 19:31:28,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 19:31:28,709 INFO L130 BoogieDeclarations]: Found specification of procedure dev_put [2021-11-25 19:31:28,709 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_put [2021-11-25 19:31:28,709 INFO L130 BoogieDeclarations]: Found specification of procedure lec_get_idx [2021-11-25 19:31:28,709 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_get_idx [2021-11-25 19:31:28,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:31:28,709 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_add [2021-11-25 19:31:28,709 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_add [2021-11-25 19:31:28,709 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-25 19:31:28,709 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-25 19:31:28,709 INFO L130 BoogieDeclarations]: Found specification of procedure hlist_add_head [2021-11-25 19:31:28,710 INFO L138 BoogieDeclarations]: Found implementation of procedure hlist_add_head [2021-11-25 19:31:28,710 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-25 19:31:28,710 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-25 19:31:28,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 19:31:28,710 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 19:31:28,710 INFO L130 BoogieDeclarations]: Found specification of procedure lec_change_mtu [2021-11-25 19:31:28,710 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_change_mtu [2021-11-25 19:31:28,710 INFO L130 BoogieDeclarations]: Found specification of procedure ether_addr_copy [2021-11-25 19:31:28,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ether_addr_copy [2021-11-25 19:31:28,711 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-25 19:31:28,711 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-25 19:31:28,711 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-25 19:31:28,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-25 19:31:28,711 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2021-11-25 19:31:28,711 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2021-11-25 19:31:28,711 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 19:31:28,711 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 19:31:28,711 INFO L130 BoogieDeclarations]: Found specification of procedure lec_seq_show [2021-11-25 19:31:28,712 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_seq_show [2021-11-25 19:31:28,712 INFO L130 BoogieDeclarations]: Found specification of procedure vcc_release_async [2021-11-25 19:31:28,712 INFO L138 BoogieDeclarations]: Found implementation of procedure vcc_release_async [2021-11-25 19:31:28,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:31:28,712 INFO L130 BoogieDeclarations]: Found specification of procedure hlist_del [2021-11-25 19:31:28,712 INFO L138 BoogieDeclarations]: Found implementation of procedure hlist_del [2021-11-25 19:31:28,712 INFO L130 BoogieDeclarations]: Found specification of procedure seq_release_private [2021-11-25 19:31:28,712 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_release_private [2021-11-25 19:31:28,712 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 19:31:28,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 19:31:28,713 INFO L130 BoogieDeclarations]: Found specification of procedure lec_set_multicast_list [2021-11-25 19:31:28,713 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_set_multicast_list [2021-11-25 19:31:28,713 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_put [2021-11-25 19:31:28,713 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_put [2021-11-25 19:31:28,713 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_hold [2021-11-25 19:31:28,713 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_hold [2021-11-25 19:31:28,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:31:28,714 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2021-11-25 19:31:28,714 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2021-11-25 19:31:28,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:31:28,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:31:28,714 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-25 19:31:28,714 INFO L130 BoogieDeclarations]: Found specification of procedure ether_addr_equal [2021-11-25 19:31:28,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ether_addr_equal [2021-11-25 19:31:28,714 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 19:31:28,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 19:31:28,714 INFO L130 BoogieDeclarations]: Found specification of procedure lec_atm_send [2021-11-25 19:31:28,715 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_atm_send [2021-11-25 19:31:28,715 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2021-11-25 19:31:28,715 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2021-11-25 19:31:28,715 INFO L130 BoogieDeclarations]: Found specification of procedure kmemdup [2021-11-25 19:31:28,715 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemdup [2021-11-25 19:31:28,715 INFO L130 BoogieDeclarations]: Found specification of procedure lec_atm_close [2021-11-25 19:31:28,715 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_atm_close [2021-11-25 19:31:28,715 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-25 19:31:28,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-25 19:31:28,716 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2021-11-25 19:31:28,716 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2021-11-25 19:31:28,716 INFO L130 BoogieDeclarations]: Found specification of procedure make_entry [2021-11-25 19:31:28,716 INFO L138 BoogieDeclarations]: Found implementation of procedure make_entry [2021-11-25 19:31:28,716 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-25 19:31:28,716 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-25 19:31:28,716 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_remove [2021-11-25 19:31:28,716 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_remove [2021-11-25 19:31:28,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:31:28,717 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_update [2021-11-25 19:31:28,717 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_update [2021-11-25 19:31:28,717 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_clear_vccs [2021-11-25 19:31:28,717 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_clear_vccs [2021-11-25 19:31:28,717 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_to_linear_data [2021-11-25 19:31:28,717 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_to_linear_data [2021-11-25 19:31:28,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:31:28,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:31:29,543 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:31:29,549 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:31:29,839 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 19:31:37,983 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-25 19:31:40,799 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; [2021-11-25 19:31:40,799 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; [2021-11-25 19:31:47,487 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:31:48,968 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:31:48,969 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 19:31:48,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:31:48 BoogieIcfgContainer [2021-11-25 19:31:48,975 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:31:48,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:31:48,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:31:48,983 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:31:48,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:31:23" (1/3) ... [2021-11-25 19:31:48,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd2e182 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:31:48, skipping insertion in model container [2021-11-25 19:31:48,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:31:27" (2/3) ... [2021-11-25 19:31:48,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd2e182 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:31:48, skipping insertion in model container [2021-11-25 19:31:48,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:31:48" (3/3) ... [2021-11-25 19:31:48,987 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 [2021-11-25 19:31:48,997 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:31:48,997 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:31:49,087 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:31:49,131 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 [2021-11-25 19:31:49,139 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:31:49,213 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) [2021-11-25 19:31:49,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-25 19:31:49,251 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:31:49,252 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] [2021-11-25 19:31:49,252 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:31:49,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:31:49,259 INFO L85 PathProgramCache]: Analyzing trace with hash -251849835, now seen corresponding path program 1 times [2021-11-25 19:31:49,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:31:49,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595658581] [2021-11-25 19:31:49,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:31:49,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:31:49,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:31:50,176 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-11-25 19:31:50,177 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:31:50,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595658581] [2021-11-25 19:31:50,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595658581] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:31:50,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:31:50,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:31:50,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868050024] [2021-11-25 19:31:50,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:31:50,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:31:50,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:31:50,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:31:50,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:31:50,237 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) [2021-11-25 19:31:55,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:31:55,325 INFO L93 Difference]: Finished difference Result 3430 states and 5106 transitions. [2021-11-25 19:31:55,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:31:55,328 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 [2021-11-25 19:31:55,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:31:55,373 INFO L225 Difference]: With dead ends: 3430 [2021-11-25 19:31:55,373 INFO L226 Difference]: Without dead ends: 2240 [2021-11-25 19:31:55,388 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 [2021-11-25 19:31:55,393 INFO L933 BasicCegarLoop]: 1802 mSDtfsCounter, 1621 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s 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, 4.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:31:55,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1621 Valid, 3248 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-11-25 19:31:55,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2240 states. [2021-11-25 19:31:55,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2240 to 2237. [2021-11-25 19:31:55,611 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) [2021-11-25 19:31:55,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2237 states to 2237 states and 3259 transitions. [2021-11-25 19:31:55,640 INFO L78 Accepts]: Start accepts. Automaton has 2237 states and 3259 transitions. Word has length 82 [2021-11-25 19:31:55,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:31:55,641 INFO L470 AbstractCegarLoop]: Abstraction has 2237 states and 3259 transitions. [2021-11-25 19:31:55,641 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) [2021-11-25 19:31:55,642 INFO L276 IsEmpty]: Start isEmpty. Operand 2237 states and 3259 transitions. [2021-11-25 19:31:55,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-25 19:31:55,649 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:31:55,650 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] [2021-11-25 19:31:55,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:31:55,651 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:31:55,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:31:55,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1619199452, now seen corresponding path program 1 times [2021-11-25 19:31:55,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:31:55,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037258993] [2021-11-25 19:31:55,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:31:55,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:31:55,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:31:56,116 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-11-25 19:31:56,117 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:31:56,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037258993] [2021-11-25 19:31:56,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037258993] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:31:56,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:31:56,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:31:56,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874836563] [2021-11-25 19:31:56,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:31:56,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:31:56,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:31:56,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:31:56,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:31:56,122 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) [2021-11-25 19:31:58,658 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:32:01,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:32:01,507 INFO L93 Difference]: Finished difference Result 6321 states and 9187 transitions. [2021-11-25 19:32:01,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:32:01,508 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 [2021-11-25 19:32:01,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:32:01,549 INFO L225 Difference]: With dead ends: 6321 [2021-11-25 19:32:01,550 INFO L226 Difference]: Without dead ends: 4105 [2021-11-25 19:32:01,563 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 [2021-11-25 19:32:01,565 INFO L933 BasicCegarLoop]: 1792 mSDtfsCounter, 1411 mSDsluCounter, 1654 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1414 SdHoareTripleChecker+Valid, 3218 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:32:01,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1414 Valid, 3218 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 471 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2021-11-25 19:32:01,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4105 states. [2021-11-25 19:32:01,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4105 to 4102. [2021-11-25 19:32:01,766 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, (1210), 1166 states have call predecessors, (1210), 1204 states have call successors, (1210) [2021-11-25 19:32:01,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4102 states to 4102 states and 5955 transitions. [2021-11-25 19:32:01,807 INFO L78 Accepts]: Start accepts. Automaton has 4102 states and 5955 transitions. Word has length 86 [2021-11-25 19:32:01,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:32:01,811 INFO L470 AbstractCegarLoop]: Abstraction has 4102 states and 5955 transitions. [2021-11-25 19:32:01,811 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) [2021-11-25 19:32:01,811 INFO L276 IsEmpty]: Start isEmpty. Operand 4102 states and 5955 transitions. [2021-11-25 19:32:01,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-25 19:32:01,819 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:32:01,819 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] [2021-11-25 19:32:01,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:32:01,820 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:32:01,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:32:01,821 INFO L85 PathProgramCache]: Analyzing trace with hash -249183472, now seen corresponding path program 1 times [2021-11-25 19:32:01,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:32:01,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233703002] [2021-11-25 19:32:01,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:32:01,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:32:02,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:32:02,287 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-11-25 19:32:02,287 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:32:02,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233703002] [2021-11-25 19:32:02,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233703002] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:32:02,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:32:02,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:32:02,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081255432] [2021-11-25 19:32:02,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:32:02,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:32:02,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:32:02,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:32:02,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:32:02,290 INFO L87 Difference]: Start difference. First operand 4102 states and 5955 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) [2021-11-25 19:32:05,842 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:32:12,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:32:12,651 INFO L93 Difference]: Finished difference Result 16311 states and 23946 transitions. [2021-11-25 19:32:12,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:32:12,653 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 [2021-11-25 19:32:12,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:32:12,771 INFO L225 Difference]: With dead ends: 16311 [2021-11-25 19:32:12,771 INFO L226 Difference]: Without dead ends: 12236 [2021-11-25 19:32:12,799 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 [2021-11-25 19:32:12,801 INFO L933 BasicCegarLoop]: 2146 mSDtfsCounter, 4286 mSDsluCounter, 2709 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 683 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4286 SdHoareTripleChecker+Valid, 4403 SdHoareTripleChecker+Invalid, 2082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 683 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:32:12,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4286 Valid, 4403 Invalid, 2082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [683 Valid, 1398 Invalid, 1 Unknown, 0 Unchecked, 9.8s Time] [2021-11-25 19:32:12,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12236 states. [2021-11-25 19:32:13,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12236 to 12206. [2021-11-25 19:32:13,482 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, (3840), 3460 states have call predecessors, (3840), 3566 states have call successors, (3840) [2021-11-25 19:32:13,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12206 states to 12206 states and 17973 transitions. [2021-11-25 19:32:13,553 INFO L78 Accepts]: Start accepts. Automaton has 12206 states and 17973 transitions. Word has length 91 [2021-11-25 19:32:13,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:32:13,554 INFO L470 AbstractCegarLoop]: Abstraction has 12206 states and 17973 transitions. [2021-11-25 19:32:13,555 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) [2021-11-25 19:32:13,555 INFO L276 IsEmpty]: Start isEmpty. Operand 12206 states and 17973 transitions. [2021-11-25 19:32:13,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-25 19:32:13,557 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:32:13,558 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] [2021-11-25 19:32:13,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:32:13,558 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:32:13,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:32:13,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1122604520, now seen corresponding path program 1 times [2021-11-25 19:32:13,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:32:13,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673487796] [2021-11-25 19:32:13,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:32:13,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:32:13,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:32:13,826 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-11-25 19:32:13,827 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:32:13,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673487796] [2021-11-25 19:32:13,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673487796] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:32:13,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:32:13,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:32:13,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232245975] [2021-11-25 19:32:13,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:32:13,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:32:13,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:32:13,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:32:13,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:32:13,829 INFO L87 Difference]: Start difference. First operand 12206 states and 17973 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) [2021-11-25 19:32:17,899 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:32:20,308 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:32:26,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:32:26,477 INFO L93 Difference]: Finished difference Result 48711 states and 72450 transitions. [2021-11-25 19:32:26,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:32:26,481 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 [2021-11-25 19:32:26,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:32:26,716 INFO L225 Difference]: With dead ends: 48711 [2021-11-25 19:32:26,717 INFO L226 Difference]: Without dead ends: 36532 [2021-11-25 19:32:26,791 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 [2021-11-25 19:32:26,792 INFO L933 BasicCegarLoop]: 2142 mSDtfsCounter, 4295 mSDsluCounter, 2712 mSDsCounter, 0 mSdLazyCounter, 1399 mSolverCounterSat, 684 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4295 SdHoareTripleChecker+Valid, 4399 SdHoareTripleChecker+Invalid, 2085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 684 IncrementalHoareTripleChecker+Valid, 1399 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:32:26,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4295 Valid, 4399 Invalid, 2085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [684 Valid, 1399 Invalid, 2 Unknown, 0 Unchecked, 11.6s Time] [2021-11-25 19:32:26,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36532 states. [2021-11-25 19:32:28,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36532 to 36502. [2021-11-25 19:32:28,888 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, (12178), 10342 states have call predecessors, (12178), 10636 states have call successors, (12178) [2021-11-25 19:32:29,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36502 states to 36502 states and 54439 transitions. [2021-11-25 19:32:29,348 INFO L78 Accepts]: Start accepts. Automaton has 36502 states and 54439 transitions. Word has length 89 [2021-11-25 19:32:29,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:32:29,349 INFO L470 AbstractCegarLoop]: Abstraction has 36502 states and 54439 transitions. [2021-11-25 19:32:29,349 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) [2021-11-25 19:32:29,349 INFO L276 IsEmpty]: Start isEmpty. Operand 36502 states and 54439 transitions. [2021-11-25 19:32:29,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-25 19:32:29,351 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:32:29,351 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] [2021-11-25 19:32:29,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 19:32:29,352 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:32:29,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:32:29,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1499219906, now seen corresponding path program 1 times [2021-11-25 19:32:29,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:32:29,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749601108] [2021-11-25 19:32:29,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:32:29,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:32:29,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:32:29,763 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-11-25 19:32:29,763 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:32:29,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749601108] [2021-11-25 19:32:29,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749601108] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:32:29,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:32:29,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:32:29,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812255960] [2021-11-25 19:32:29,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:32:29,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:32:29,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:32:29,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:32:29,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:32:29,766 INFO L87 Difference]: Start difference. First operand 36502 states and 54439 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) [2021-11-25 19:32:33,292 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:32:41,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:32:41,256 INFO L93 Difference]: Finished difference Result 145847 states and 218290 transitions. [2021-11-25 19:32:41,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:32:41,257 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 [2021-11-25 19:32:41,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:32:42,275 INFO L225 Difference]: With dead ends: 145847 [2021-11-25 19:32:42,275 INFO L226 Difference]: Without dead ends: 109372 [2021-11-25 19:32:42,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:32:42,488 INFO L933 BasicCegarLoop]: 2143 mSDtfsCounter, 3329 mSDsluCounter, 4356 mSDsCounter, 0 mSdLazyCounter, 1662 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s 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, 8.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:32:42,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3329 Valid, 5823 Invalid, 1670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1662 Invalid, 1 Unknown, 0 Unchecked, 8.4s Time] [2021-11-25 19:32:42,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109372 states. [2021-11-25 19:32:47,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109372 to 109270. [2021-11-25 19:32:47,752 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, (37216), 30988 states have call predecessors, (37216), 31798 states have call successors, (37216) [2021-11-25 19:32:49,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109270 states to 109270 states and 163613 transitions. [2021-11-25 19:32:49,350 INFO L78 Accepts]: Start accepts. Automaton has 109270 states and 163613 transitions. Word has length 92 [2021-11-25 19:32:49,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:32:49,351 INFO L470 AbstractCegarLoop]: Abstraction has 109270 states and 163613 transitions. [2021-11-25 19:32:49,351 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) [2021-11-25 19:32:49,351 INFO L276 IsEmpty]: Start isEmpty. Operand 109270 states and 163613 transitions. [2021-11-25 19:32:49,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-25 19:32:49,354 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:32:49,354 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] [2021-11-25 19:32:49,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 19:32:49,354 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:32:49,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:32:49,356 INFO L85 PathProgramCache]: Analyzing trace with hash 158968774, now seen corresponding path program 1 times [2021-11-25 19:32:49,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:32:49,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514356288] [2021-11-25 19:32:49,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:32:49,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:32:49,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:32:49,669 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-11-25 19:32:49,669 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:32:49,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514356288] [2021-11-25 19:32:49,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514356288] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:32:49,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:32:49,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:32:49,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385653774] [2021-11-25 19:32:49,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:32:49,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:32:49,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:32:49,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:32:49,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:32:49,672 INFO L87 Difference]: Start difference. First operand 109270 states and 163613 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) [2021-11-25 19:32:52,035 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:33:01,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:33:01,860 INFO L93 Difference]: Finished difference Result 210295 states and 314956 transitions. [2021-11-25 19:33:01,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:33:01,863 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 [2021-11-25 19:33:01,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:33:02,533 INFO L225 Difference]: With dead ends: 210295 [2021-11-25 19:33:02,533 INFO L226 Difference]: Without dead ends: 101052 [2021-11-25 19:33:03,164 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 [2021-11-25 19:33:03,165 INFO L933 BasicCegarLoop]: 2252 mSDtfsCounter, 4135 mSDsluCounter, 2703 mSDsCounter, 0 mSdLazyCounter, 1417 mSolverCounterSat, 632 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4135 SdHoareTripleChecker+Valid, 4503 SdHoareTripleChecker+Invalid, 2050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 632 IncrementalHoareTripleChecker+Valid, 1417 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:33:03,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4135 Valid, 4503 Invalid, 2050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [632 Valid, 1417 Invalid, 1 Unknown, 0 Unchecked, 8.2s Time] [2021-11-25 19:33:03,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101052 states. [2021-11-25 19:33:06,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101052 to 101026. [2021-11-25 19:33:06,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101026 states, 64389 states have (on average 1.3586171551041326) internal successors, (87480), 66715 states have internal predecessors, (87480), 29385 states have call successors, (29385), 7244 states have call predecessors, (29385), 7251 states have return successors, (34428), 28670 states have call predecessors, (34428), 29384 states have call successors, (34428) [2021-11-25 19:33:07,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101026 states to 101026 states and 151293 transitions. [2021-11-25 19:33:07,637 INFO L78 Accepts]: Start accepts. Automaton has 101026 states and 151293 transitions. Word has length 90 [2021-11-25 19:33:07,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:33:07,639 INFO L470 AbstractCegarLoop]: Abstraction has 101026 states and 151293 transitions. [2021-11-25 19:33:07,639 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) [2021-11-25 19:33:07,639 INFO L276 IsEmpty]: Start isEmpty. Operand 101026 states and 151293 transitions. [2021-11-25 19:33:07,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-25 19:33:07,643 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:33:07,643 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] [2021-11-25 19:33:07,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 19:33:07,644 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:33:07,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:33:07,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1075133706, now seen corresponding path program 1 times [2021-11-25 19:33:07,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:33:07,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693610378] [2021-11-25 19:33:07,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:33:07,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:33:07,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:33:07,929 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-25 19:33:07,930 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:33:07,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693610378] [2021-11-25 19:33:07,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693610378] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:33:07,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:33:07,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:33:07,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645244598] [2021-11-25 19:33:07,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:33:07,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:33:07,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:33:07,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:33:07,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:33:07,933 INFO L87 Difference]: Start difference. First operand 101026 states and 151293 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) [2021-11-25 19:33:17,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:33:17,232 INFO L93 Difference]: Finished difference Result 283424 states and 422802 transitions. [2021-11-25 19:33:17,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:33:17,233 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 [2021-11-25 19:33:17,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:33:18,234 INFO L225 Difference]: With dead ends: 283424 [2021-11-25 19:33:18,234 INFO L226 Difference]: Without dead ends: 182425 [2021-11-25 19:33:18,590 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 [2021-11-25 19:33:18,591 INFO L933 BasicCegarLoop]: 1735 mSDtfsCounter, 1376 mSDsluCounter, 1622 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1376 SdHoareTripleChecker+Valid, 3133 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:33:18,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1376 Valid, 3133 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-11-25 19:33:18,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182425 states.