./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 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e74df8-ca76-48b5-a0dc-748e59a2f8af/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e74df8-ca76-48b5-a0dc-748e59a2f8af/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e74df8-ca76-48b5-a0dc-748e59a2f8af/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e74df8-ca76-48b5-a0dc-748e59a2f8af/bin/utaipan-7li7fVZpFI/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_96e74df8-ca76-48b5-a0dc-748e59a2f8af/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e74df8-ca76-48b5-a0dc-748e59a2f8af/bin/utaipan-7li7fVZpFI --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 --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:18:43,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:18:43,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:18:43,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:18:43,682 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:18:43,684 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:18:43,686 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:18:43,691 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:18:43,692 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:18:43,694 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:18:43,695 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:18:43,698 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:18:43,699 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:18:43,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:18:43,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:18:43,707 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:18:43,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:18:43,711 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:18:43,712 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:18:43,715 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:18:43,719 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:18:43,720 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:18:43,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:18:43,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:18:43,728 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:18:43,729 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:18:43,729 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:18:43,731 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:18:43,731 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:18:43,732 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:18:43,733 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:18:43,734 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:18:43,735 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:18:43,737 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:18:43,738 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:18:43,739 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:18:43,740 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:18:43,740 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:18:43,740 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:18:43,741 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:18:43,742 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:18:43,743 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e74df8-ca76-48b5-a0dc-748e59a2f8af/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:18:43,778 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:18:43,780 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:18:43,781 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:18:43,781 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:18:43,782 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:18:43,782 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:18:43,782 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:18:43,782 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:18:43,783 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:18:43,783 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:18:43,784 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:18:43,784 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:18:43,784 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:18:43,784 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:18:43,784 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:18:43,785 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:18:43,785 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:18:43,785 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:18:43,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:18:43,786 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:18:43,786 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:18:43,786 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:18:43,786 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:18:43,787 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:18:43,787 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:18:43,787 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:18:43,787 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:18:43,787 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:18:43,788 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:18:43,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:18:43,788 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:18:43,788 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:18:43,789 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:18:43,789 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:18:43,789 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:18:43,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:18:43,789 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:18:43,789 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:18:43,790 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_96e74df8-ca76-48b5-a0dc-748e59a2f8af/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e74df8-ca76-48b5-a0dc-748e59a2f8af/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0271a94e9583537c53cc956cc665cf103175977e84d74a6d4144b032ac11f321 [2022-11-03 02:18:44,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:18:44,134 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:18:44,136 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:18:44,138 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:18:44,139 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:18:44,140 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e74df8-ca76-48b5-a0dc-748e59a2f8af/bin/utaipan-7li7fVZpFI/../../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 [2022-11-03 02:18:44,221 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e74df8-ca76-48b5-a0dc-748e59a2f8af/bin/utaipan-7li7fVZpFI/data/018f4d36d/1d17722c450a4ecbabd100faa6560920/FLAGeff82939b [2022-11-03 02:18:45,224 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:18:45,228 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e74df8-ca76-48b5-a0dc-748e59a2f8af/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 [2022-11-03 02:18:45,307 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e74df8-ca76-48b5-a0dc-748e59a2f8af/bin/utaipan-7li7fVZpFI/data/018f4d36d/1d17722c450a4ecbabd100faa6560920/FLAGeff82939b [2022-11-03 02:18:45,593 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e74df8-ca76-48b5-a0dc-748e59a2f8af/bin/utaipan-7li7fVZpFI/data/018f4d36d/1d17722c450a4ecbabd100faa6560920 [2022-11-03 02:18:45,596 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:18:45,599 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:18:45,601 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:18:45,602 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:18:45,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:18:45,607 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:18:45" (1/1) ... [2022-11-03 02:18:45,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6354fb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:45, skipping insertion in model container [2022-11-03 02:18:45,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:18:45" (1/1) ... [2022-11-03 02:18:45,615 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:18:45,779 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:18:46,334 WARN L1244 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6098] [2022-11-03 02:18:46,343 WARN L1244 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6099-6100] [2022-11-03 02:18:46,909 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_96e74df8-ca76-48b5-a0dc-748e59a2f8af/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] [2022-11-03 02:18:48,171 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:18:48,223 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:18:48,395 WARN L1244 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6098] [2022-11-03 02:18:48,395 WARN L1244 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6099-6100] [2022-11-03 02:18:48,416 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_96e74df8-ca76-48b5-a0dc-748e59a2f8af/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] [2022-11-03 02:18:48,825 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:18:48,993 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:18:48,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:48 WrapperNode [2022-11-03 02:18:48,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:18:48,994 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:18:48,995 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:18:48,995 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:18:49,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:48" (1/1) ... [2022-11-03 02:18:49,117 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:48" (1/1) ... [2022-11-03 02:18:49,298 INFO L138 Inliner]: procedures = 286, calls = 2896, calls flagged for inlining = 145, calls inlined = 128, statements flattened = 5519 [2022-11-03 02:18:49,298 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:18:49,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:18:49,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:18:49,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:18:49,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:48" (1/1) ... [2022-11-03 02:18:49,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:48" (1/1) ... [2022-11-03 02:18:49,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:48" (1/1) ... [2022-11-03 02:18:49,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:48" (1/1) ... [2022-11-03 02:18:49,549 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:48" (1/1) ... [2022-11-03 02:18:49,583 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:48" (1/1) ... [2022-11-03 02:18:49,613 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:48" (1/1) ... [2022-11-03 02:18:49,632 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:48" (1/1) ... [2022-11-03 02:18:49,665 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:18:49,666 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:18:49,666 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:18:49,666 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:18:49,671 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:48" (1/1) ... [2022-11-03 02:18:49,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:18:49,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e74df8-ca76-48b5-a0dc-748e59a2f8af/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:18:49,704 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e74df8-ca76-48b5-a0dc-748e59a2f8af/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:18:49,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e74df8-ca76-48b5-a0dc-748e59a2f8af/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:18:49,753 INFO L130 BoogieDeclarations]: Found specification of procedure skb_dequeue [2022-11-03 02:18:49,753 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_dequeue [2022-11-03 02:18:49,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:18:49,753 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_skb [2022-11-03 02:18:49,753 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_skb [2022-11-03 02:18:49,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:18:49,754 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:18:49,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:18:49,754 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-03 02:18:49,754 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-03 02:18:49,755 INFO L130 BoogieDeclarations]: Found specification of procedure send_to_lecd [2022-11-03 02:18:49,755 INFO L138 BoogieDeclarations]: Found implementation of procedure send_to_lecd [2022-11-03 02:18:49,755 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-03 02:18:49,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-03 02:18:49,755 INFO L130 BoogieDeclarations]: Found specification of procedure __lec_arp_check_expire [2022-11-03 02:18:49,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __lec_arp_check_expire [2022-11-03 02:18:49,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:18:49,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:18:49,756 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-03 02:18:49,756 INFO L130 BoogieDeclarations]: Found specification of procedure lec_seq_stop [2022-11-03 02:18:49,756 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_seq_stop [2022-11-03 02:18:49,757 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 02:18:49,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 02:18:49,757 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_sub [2022-11-03 02:18:49,757 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_sub [2022-11-03 02:18:49,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 02:18:49,757 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 02:18:49,758 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 02:18:49,758 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 02:18:49,758 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 02:18:49,758 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 02:18:49,758 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-03 02:18:49,759 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-03 02:18:49,759 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_find [2022-11-03 02:18:49,759 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_find [2022-11-03 02:18:49,759 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 02:18:49,759 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 02:18:49,759 INFO L130 BoogieDeclarations]: Found specification of procedure sk_atm [2022-11-03 02:18:49,760 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_atm [2022-11-03 02:18:49,760 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2022-11-03 02:18:49,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2022-11-03 02:18:49,760 INFO L130 BoogieDeclarations]: Found specification of procedure atm_may_send [2022-11-03 02:18:49,760 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_may_send [2022-11-03 02:18:49,761 INFO L130 BoogieDeclarations]: Found specification of procedure lec_seq_open [2022-11-03 02:18:49,761 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_seq_open [2022-11-03 02:18:49,761 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-03 02:18:49,761 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-03 02:18:49,761 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-03 02:18:49,762 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-03 02:18:49,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:18:49,762 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-03 02:18:49,762 INFO L130 BoogieDeclarations]: Found specification of procedure lec_tx_timeout [2022-11-03 02:18:49,762 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_tx_timeout [2022-11-03 02:18:49,762 INFO L130 BoogieDeclarations]: Found specification of procedure hlist_empty [2022-11-03 02:18:49,763 INFO L138 BoogieDeclarations]: Found implementation of procedure hlist_empty [2022-11-03 02:18:49,763 INFO L130 BoogieDeclarations]: Found specification of procedure lec_flush_complete [2022-11-03 02:18:49,763 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_flush_complete [2022-11-03 02:18:49,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:18:49,763 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-03 02:18:49,764 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-03 02:18:49,764 INFO L130 BoogieDeclarations]: Found specification of procedure lec_send [2022-11-03 02:18:49,764 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_send [2022-11-03 02:18:49,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2022-11-03 02:18:49,764 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 02:18:49,764 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 02:18:49,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:18:49,765 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add [2022-11-03 02:18:49,765 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add [2022-11-03 02:18:49,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:18:49,765 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2022-11-03 02:18:49,765 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2022-11-03 02:18:49,766 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 02:18:49,766 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 02:18:49,766 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-03 02:18:49,766 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-03 02:18:49,766 INFO L130 BoogieDeclarations]: Found specification of procedure lec_tbl_walk [2022-11-03 02:18:49,767 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_tbl_walk [2022-11-03 02:18:49,767 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 02:18:49,767 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 02:18:49,767 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 02:18:49,767 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 02:18:49,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:18:49,768 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-03 02:18:49,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-03 02:18:49,768 INFO L130 BoogieDeclarations]: Found specification of procedure atm_force_charge [2022-11-03 02:18:49,768 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_force_charge [2022-11-03 02:18:49,768 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-03 02:18:49,769 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-03 02:18:49,769 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_check_expire [2022-11-03 02:18:49,769 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_check_expire [2022-11-03 02:18:49,769 INFO L130 BoogieDeclarations]: Found specification of procedure atm_return [2022-11-03 02:18:49,769 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_return [2022-11-03 02:18:49,769 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 02:18:49,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 02:18:49,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:18:49,770 INFO L130 BoogieDeclarations]: Found specification of procedure dev_put [2022-11-03 02:18:49,770 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_put [2022-11-03 02:18:49,770 INFO L130 BoogieDeclarations]: Found specification of procedure lec_get_idx [2022-11-03 02:18:49,771 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_get_idx [2022-11-03 02:18:49,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:18:49,771 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_add [2022-11-03 02:18:49,771 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_add [2022-11-03 02:18:49,771 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 02:18:49,771 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 02:18:49,772 INFO L130 BoogieDeclarations]: Found specification of procedure hlist_add_head [2022-11-03 02:18:49,772 INFO L138 BoogieDeclarations]: Found implementation of procedure hlist_add_head [2022-11-03 02:18:49,772 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-03 02:18:49,772 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-03 02:18:49,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 02:18:49,773 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 02:18:49,773 INFO L130 BoogieDeclarations]: Found specification of procedure lec_change_mtu [2022-11-03 02:18:49,773 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_change_mtu [2022-11-03 02:18:49,773 INFO L130 BoogieDeclarations]: Found specification of procedure ether_addr_copy [2022-11-03 02:18:49,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ether_addr_copy [2022-11-03 02:18:49,773 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-03 02:18:49,774 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-03 02:18:49,774 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-03 02:18:49,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-03 02:18:49,774 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2022-11-03 02:18:49,774 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2022-11-03 02:18:49,775 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 02:18:49,775 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 02:18:49,775 INFO L130 BoogieDeclarations]: Found specification of procedure lec_seq_show [2022-11-03 02:18:49,775 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_seq_show [2022-11-03 02:18:49,775 INFO L130 BoogieDeclarations]: Found specification of procedure vcc_release_async [2022-11-03 02:18:49,776 INFO L138 BoogieDeclarations]: Found implementation of procedure vcc_release_async [2022-11-03 02:18:49,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:18:49,776 INFO L130 BoogieDeclarations]: Found specification of procedure hlist_del [2022-11-03 02:18:49,776 INFO L138 BoogieDeclarations]: Found implementation of procedure hlist_del [2022-11-03 02:18:49,776 INFO L130 BoogieDeclarations]: Found specification of procedure seq_release_private [2022-11-03 02:18:49,776 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_release_private [2022-11-03 02:18:49,777 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:18:49,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:18:49,777 INFO L130 BoogieDeclarations]: Found specification of procedure lec_set_multicast_list [2022-11-03 02:18:49,777 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_set_multicast_list [2022-11-03 02:18:49,777 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_put [2022-11-03 02:18:49,777 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_put [2022-11-03 02:18:49,778 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_hold [2022-11-03 02:18:49,778 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_hold [2022-11-03 02:18:49,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:18:49,778 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2022-11-03 02:18:49,778 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2022-11-03 02:18:49,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:18:49,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:18:49,779 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 02:18:49,779 INFO L130 BoogieDeclarations]: Found specification of procedure ether_addr_equal [2022-11-03 02:18:49,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ether_addr_equal [2022-11-03 02:18:49,779 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:18:49,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:18:49,780 INFO L130 BoogieDeclarations]: Found specification of procedure lec_atm_send [2022-11-03 02:18:49,780 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_atm_send [2022-11-03 02:18:49,780 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2022-11-03 02:18:49,780 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2022-11-03 02:18:49,780 INFO L130 BoogieDeclarations]: Found specification of procedure kmemdup [2022-11-03 02:18:49,780 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemdup [2022-11-03 02:18:49,781 INFO L130 BoogieDeclarations]: Found specification of procedure lec_atm_close [2022-11-03 02:18:49,781 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_atm_close [2022-11-03 02:18:49,781 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 02:18:49,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 02:18:49,781 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2022-11-03 02:18:49,781 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2022-11-03 02:18:49,782 INFO L130 BoogieDeclarations]: Found specification of procedure make_entry [2022-11-03 02:18:49,782 INFO L138 BoogieDeclarations]: Found implementation of procedure make_entry [2022-11-03 02:18:49,782 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-03 02:18:49,782 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-03 02:18:49,782 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_remove [2022-11-03 02:18:49,782 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_remove [2022-11-03 02:18:49,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:18:49,783 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_update [2022-11-03 02:18:49,783 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_update [2022-11-03 02:18:49,783 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_clear_vccs [2022-11-03 02:18:49,783 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_clear_vccs [2022-11-03 02:18:49,784 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_to_linear_data [2022-11-03 02:18:49,784 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_to_linear_data [2022-11-03 02:18:49,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:18:49,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:18:50,638 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:18:50,644 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:18:50,956 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:18:58,560 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 02:18:59,971 INFO L769 $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; [2022-11-03 02:18:59,971 INFO L769 $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; [2022-11-03 02:19:06,328 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:19:07,847 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:19:07,847 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:19:07,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:19:07 BoogieIcfgContainer [2022-11-03 02:19:07,853 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:19:07,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:19:07,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:19:07,861 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:19:07,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:18:45" (1/3) ... [2022-11-03 02:19:07,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18edef63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:19:07, skipping insertion in model container [2022-11-03 02:19:07,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:48" (2/3) ... [2022-11-03 02:19:07,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18edef63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:19:07, skipping insertion in model container [2022-11-03 02:19:07,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:19:07" (3/3) ... [2022-11-03 02:19:07,867 INFO L112 eAbstractionObserver]: Analyzing ICFG 43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--atm--lec.ko-entry_point.cil.out.i [2022-11-03 02:19:07,886 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:19:07,886 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:19:07,966 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:19:07,973 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@57a62e4a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:19:07,973 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:19:07,981 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) [2022-11-03 02:19:07,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-03 02:19:07,999 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:08,000 INFO L195 NwaCegarLoop]: 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] [2022-11-03 02:19:08,000 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:08,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:08,005 INFO L85 PathProgramCache]: Analyzing trace with hash -251849835, now seen corresponding path program 1 times [2022-11-03 02:19:08,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:19:08,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605266305] [2022-11-03 02:19:08,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:08,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:19:08,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:09,017 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-11-03 02:19:09,018 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:19:09,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605266305] [2022-11-03 02:19:09,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605266305] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:09,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:09,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:19:09,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125015140] [2022-11-03 02:19:09,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:09,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:19:09,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:19:09,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:19:09,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:19:09,069 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) [2022-11-03 02:19:11,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:14,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:14,371 INFO L93 Difference]: Finished difference Result 3430 states and 5109 transitions. [2022-11-03 02:19:14,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:19:14,374 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 [2022-11-03 02:19:14,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:14,420 INFO L225 Difference]: With dead ends: 3430 [2022-11-03 02:19:14,421 INFO L226 Difference]: Without dead ends: 2240 [2022-11-03 02:19:14,438 INFO L412 NwaCegarLoop]: 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 [2022-11-03 02:19:14,441 INFO L413 NwaCegarLoop]: 1802 mSDtfsCounter, 1620 mSDsluCounter, 1681 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1623 SdHoareTripleChecker+Valid, 3248 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:14,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1623 Valid, 3248 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 481 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2022-11-03 02:19:14,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2240 states. [2022-11-03 02:19:14,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2240 to 2237. [2022-11-03 02:19:14,682 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, (671), 648 states have call predecessors, (671), 668 states have call successors, (671) [2022-11-03 02:19:14,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2237 states to 2237 states and 3262 transitions. [2022-11-03 02:19:14,707 INFO L78 Accepts]: Start accepts. Automaton has 2237 states and 3262 transitions. Word has length 82 [2022-11-03 02:19:14,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:14,709 INFO L495 AbstractCegarLoop]: Abstraction has 2237 states and 3262 transitions. [2022-11-03 02:19:14,716 INFO L496 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) [2022-11-03 02:19:14,717 INFO L276 IsEmpty]: Start isEmpty. Operand 2237 states and 3262 transitions. [2022-11-03 02:19:14,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-03 02:19:14,725 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:14,726 INFO L195 NwaCegarLoop]: 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] [2022-11-03 02:19:14,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:19:14,729 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:14,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:14,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1619199452, now seen corresponding path program 1 times [2022-11-03 02:19:14,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:19:14,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223747939] [2022-11-03 02:19:14,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:14,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:19:14,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:15,171 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-11-03 02:19:15,171 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:19:15,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223747939] [2022-11-03 02:19:15,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223747939] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:15,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:15,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:19:15,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950607150] [2022-11-03 02:19:15,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:15,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:19:15,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:19:15,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:19:15,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:19:15,175 INFO L87 Difference]: Start difference. First operand 2237 states and 3262 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) [2022-11-03 02:19:16,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:19,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:21,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:21,362 INFO L93 Difference]: Finished difference Result 6321 states and 9190 transitions. [2022-11-03 02:19:21,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:19:21,362 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 [2022-11-03 02:19:21,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:21,391 INFO L225 Difference]: With dead ends: 6321 [2022-11-03 02:19:21,391 INFO L226 Difference]: Without dead ends: 4105 [2022-11-03 02:19:21,401 INFO L412 NwaCegarLoop]: 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 [2022-11-03 02:19:21,403 INFO L413 NwaCegarLoop]: 1792 mSDtfsCounter, 1412 mSDsluCounter, 1655 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1412 SdHoareTripleChecker+Valid, 3218 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:21,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1412 Valid, 3218 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 472 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2022-11-03 02:19:21,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4105 states. [2022-11-03 02:19:21,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4105 to 4102. [2022-11-03 02:19:21,600 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) [2022-11-03 02:19:21,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4102 states to 4102 states and 5955 transitions. [2022-11-03 02:19:21,628 INFO L78 Accepts]: Start accepts. Automaton has 4102 states and 5955 transitions. Word has length 86 [2022-11-03 02:19:21,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:21,632 INFO L495 AbstractCegarLoop]: Abstraction has 4102 states and 5955 transitions. [2022-11-03 02:19:21,632 INFO L496 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) [2022-11-03 02:19:21,633 INFO L276 IsEmpty]: Start isEmpty. Operand 4102 states and 5955 transitions. [2022-11-03 02:19:21,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-03 02:19:21,638 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:21,639 INFO L195 NwaCegarLoop]: 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] [2022-11-03 02:19:21,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:19:21,640 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:21,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:21,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1122604520, now seen corresponding path program 1 times [2022-11-03 02:19:21,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:19:21,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694696166] [2022-11-03 02:19:21,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:21,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:19:21,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:22,296 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-11-03 02:19:22,296 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:19:22,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694696166] [2022-11-03 02:19:22,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694696166] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:22,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:22,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:19:22,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107449909] [2022-11-03 02:19:22,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:22,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:19:22,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:19:22,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:19:22,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:19:22,298 INFO L87 Difference]: Start difference. First operand 4102 states and 5955 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) [2022-11-03 02:19:25,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:32,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:32,352 INFO L93 Difference]: Finished difference Result 16311 states and 23946 transitions. [2022-11-03 02:19:32,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:19:32,352 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 [2022-11-03 02:19:32,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:32,432 INFO L225 Difference]: With dead ends: 16311 [2022-11-03 02:19:32,432 INFO L226 Difference]: Without dead ends: 12236 [2022-11-03 02:19:32,457 INFO L412 NwaCegarLoop]: 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 [2022-11-03 02:19:32,462 INFO L413 NwaCegarLoop]: 2146 mSDtfsCounter, 4290 mSDsluCounter, 2709 mSDsCounter, 0 mSdLazyCounter, 1399 mSolverCounterSat, 683 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4290 SdHoareTripleChecker+Valid, 4403 SdHoareTripleChecker+Invalid, 2083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 683 IncrementalHoareTripleChecker+Valid, 1399 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:32,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4290 Valid, 4403 Invalid, 2083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [683 Valid, 1399 Invalid, 1 Unknown, 0 Unchecked, 9.4s Time] [2022-11-03 02:19:32,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12236 states. [2022-11-03 02:19:33,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12236 to 12206. [2022-11-03 02:19:33,172 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) [2022-11-03 02:19:33,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12206 states to 12206 states and 17973 transitions. [2022-11-03 02:19:33,238 INFO L78 Accepts]: Start accepts. Automaton has 12206 states and 17973 transitions. Word has length 89 [2022-11-03 02:19:33,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:33,239 INFO L495 AbstractCegarLoop]: Abstraction has 12206 states and 17973 transitions. [2022-11-03 02:19:33,240 INFO L496 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) [2022-11-03 02:19:33,240 INFO L276 IsEmpty]: Start isEmpty. Operand 12206 states and 17973 transitions. [2022-11-03 02:19:33,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-03 02:19:33,243 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:33,244 INFO L195 NwaCegarLoop]: 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] [2022-11-03 02:19:33,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:19:33,244 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:33,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:33,246 INFO L85 PathProgramCache]: Analyzing trace with hash -249183472, now seen corresponding path program 1 times [2022-11-03 02:19:33,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:19:33,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788002429] [2022-11-03 02:19:33,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:33,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:19:33,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:33,759 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-11-03 02:19:33,760 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:19:33,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788002429] [2022-11-03 02:19:33,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788002429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:33,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:33,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:19:33,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599936638] [2022-11-03 02:19:33,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:33,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:19:33,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:19:33,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:19:33,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:19:33,762 INFO L87 Difference]: Start difference. First operand 12206 states and 17973 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) [2022-11-03 02:19:38,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:45,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:45,251 INFO L93 Difference]: Finished difference Result 48711 states and 72450 transitions. [2022-11-03 02:19:45,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:19:45,252 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 [2022-11-03 02:19:45,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:45,467 INFO L225 Difference]: With dead ends: 48711 [2022-11-03 02:19:45,467 INFO L226 Difference]: Without dead ends: 36532 [2022-11-03 02:19:45,534 INFO L412 NwaCegarLoop]: 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 [2022-11-03 02:19:45,538 INFO L413 NwaCegarLoop]: 2142 mSDtfsCounter, 4291 mSDsluCounter, 2712 mSDsCounter, 0 mSdLazyCounter, 1399 mSolverCounterSat, 684 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4291 SdHoareTripleChecker+Valid, 4399 SdHoareTripleChecker+Invalid, 2084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 684 IncrementalHoareTripleChecker+Valid, 1399 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:45,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4291 Valid, 4399 Invalid, 2084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [684 Valid, 1399 Invalid, 1 Unknown, 0 Unchecked, 10.4s Time] [2022-11-03 02:19:45,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36532 states. [2022-11-03 02:19:47,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36532 to 36502. [2022-11-03 02:19:47,684 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) [2022-11-03 02:19:47,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36502 states to 36502 states and 54439 transitions. [2022-11-03 02:19:47,891 INFO L78 Accepts]: Start accepts. Automaton has 36502 states and 54439 transitions. Word has length 91 [2022-11-03 02:19:47,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:47,891 INFO L495 AbstractCegarLoop]: Abstraction has 36502 states and 54439 transitions. [2022-11-03 02:19:47,892 INFO L496 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) [2022-11-03 02:19:47,892 INFO L276 IsEmpty]: Start isEmpty. Operand 36502 states and 54439 transitions. [2022-11-03 02:19:47,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-03 02:19:47,899 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:47,899 INFO L195 NwaCegarLoop]: 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] [2022-11-03 02:19:47,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:19:47,900 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:47,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:47,901 INFO L85 PathProgramCache]: Analyzing trace with hash 158968774, now seen corresponding path program 1 times [2022-11-03 02:19:47,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:19:47,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131879223] [2022-11-03 02:19:47,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:47,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:19:48,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:48,758 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-11-03 02:19:48,759 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:19:48,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131879223] [2022-11-03 02:19:48,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131879223] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:48,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:48,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:19:48,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433509951] [2022-11-03 02:19:48,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:48,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:19:48,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:19:48,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:19:48,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:19:48,761 INFO L87 Difference]: Start difference. First operand 36502 states and 54439 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) [2022-11-03 02:19:52,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:01,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:01,194 INFO L93 Difference]: Finished difference Result 145847 states and 218290 transitions. [2022-11-03 02:20:01,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:20:01,195 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 [2022-11-03 02:20:01,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:02,240 INFO L225 Difference]: With dead ends: 145847 [2022-11-03 02:20:02,241 INFO L226 Difference]: Without dead ends: 109372 [2022-11-03 02:20:02,405 INFO L412 NwaCegarLoop]: 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 [2022-11-03 02:20:02,406 INFO L413 NwaCegarLoop]: 2144 mSDtfsCounter, 3331 mSDsluCounter, 4249 mSDsCounter, 0 mSdLazyCounter, 1648 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3331 SdHoareTripleChecker+Valid, 5732 SdHoareTripleChecker+Invalid, 1656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1648 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:02,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3331 Valid, 5732 Invalid, 1656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1648 Invalid, 1 Unknown, 0 Unchecked, 8.5s Time] [2022-11-03 02:20:02,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109372 states. [2022-11-03 02:20:08,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109372 to 109342. [2022-11-03 02:20:08,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109342 states, 69707 states have (on average 1.3591461402728564) internal successors, (94742), 72253 states have internal predecessors, (94742), 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) [2022-11-03 02:20:09,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109342 states to 109342 states and 163757 transitions. [2022-11-03 02:20:09,801 INFO L78 Accepts]: Start accepts. Automaton has 109342 states and 163757 transitions. Word has length 90 [2022-11-03 02:20:09,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:09,802 INFO L495 AbstractCegarLoop]: Abstraction has 109342 states and 163757 transitions. [2022-11-03 02:20:09,802 INFO L496 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) [2022-11-03 02:20:09,802 INFO L276 IsEmpty]: Start isEmpty. Operand 109342 states and 163757 transitions. [2022-11-03 02:20:09,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-03 02:20:09,805 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:09,805 INFO L195 NwaCegarLoop]: 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] [2022-11-03 02:20:09,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:20:09,805 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:09,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:09,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1499219906, now seen corresponding path program 1 times [2022-11-03 02:20:09,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:09,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995271881] [2022-11-03 02:20:09,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:09,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:09,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:10,247 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-11-03 02:20:10,247 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:10,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995271881] [2022-11-03 02:20:10,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995271881] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:10,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:10,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:20:10,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396680202] [2022-11-03 02:20:10,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:10,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:20:10,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:10,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:20:10,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:20:10,249 INFO L87 Difference]: Start difference. First operand 109342 states and 163757 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) [2022-11-03 02:20:15,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:27,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:27,575 INFO L93 Difference]: Finished difference Result 258891 states and 388292 transitions. [2022-11-03 02:20:27,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:20:27,575 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 [2022-11-03 02:20:27,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:28,354 INFO L225 Difference]: With dead ends: 258891 [2022-11-03 02:20:28,354 INFO L226 Difference]: Without dead ends: 149576 [2022-11-03 02:20:28,937 INFO L412 NwaCegarLoop]: 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 [2022-11-03 02:20:28,938 INFO L413 NwaCegarLoop]: 2144 mSDtfsCounter, 4289 mSDsluCounter, 2711 mSDsCounter, 0 mSdLazyCounter, 1399 mSolverCounterSat, 684 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4289 SdHoareTripleChecker+Valid, 4401 SdHoareTripleChecker+Invalid, 2084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 684 IncrementalHoareTripleChecker+Valid, 1399 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:28,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4289 Valid, 4401 Invalid, 2084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [684 Valid, 1399 Invalid, 1 Unknown, 0 Unchecked, 10.5s Time] [2022-11-03 02:20:29,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149576 states. [2022-11-03 02:20:35,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149576 to 149450. [2022-11-03 02:20:35,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149450 states, 95265 states have (on average 1.35793838240697) internal successors, (129364), 98679 states have internal predecessors, (129364), 43453 states have call successors, (43453), 10716 states have call predecessors, (43453), 10731 states have return successors, (51388), 42426 states have call predecessors, (51388), 43452 states have call successors, (51388) [2022-11-03 02:20:36,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149450 states to 149450 states and 224205 transitions. [2022-11-03 02:20:36,554 INFO L78 Accepts]: Start accepts. Automaton has 149450 states and 224205 transitions. Word has length 92 [2022-11-03 02:20:36,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:36,554 INFO L495 AbstractCegarLoop]: Abstraction has 149450 states and 224205 transitions. [2022-11-03 02:20:36,555 INFO L496 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) [2022-11-03 02:20:36,555 INFO L276 IsEmpty]: Start isEmpty. Operand 149450 states and 224205 transitions. [2022-11-03 02:20:36,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-03 02:20:36,557 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:36,557 INFO L195 NwaCegarLoop]: 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] [2022-11-03 02:20:36,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:20:36,557 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:36,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:36,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1075133706, now seen corresponding path program 1 times [2022-11-03 02:20:36,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:36,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610505165] [2022-11-03 02:20:36,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:36,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:36,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:37,334 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2022-11-03 02:20:37,334 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:37,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610505165] [2022-11-03 02:20:37,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610505165] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:37,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:37,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:20:37,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466890858] [2022-11-03 02:20:37,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:37,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:20:37,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:37,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:20:37,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:20:37,338 INFO L87 Difference]: Start difference. First operand 149450 states and 224205 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)