./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_async.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_73a463fc-5059-45e6-8ec3-2c4297aebdaa/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a463fc-5059-45e6-8ec3-2c4297aebdaa/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a463fc-5059-45e6-8ec3-2c4297aebdaa/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a463fc-5059-45e6-8ec3-2c4297aebdaa/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_async.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a463fc-5059-45e6-8ec3-2c4297aebdaa/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a463fc-5059-45e6-8ec3-2c4297aebdaa/bin/utaipan-g80aRyZoba --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 f78e25bf76e2d1d395e5e41868c5ddb628a36f1efdf095bb509ea6a3a366617b --- 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-b5237d8 [2022-11-22 01:48:33,792 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:48:33,795 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:48:33,822 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:48:33,824 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:48:33,829 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:48:33,832 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:48:33,836 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:48:33,838 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:48:33,846 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:48:33,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:48:33,851 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:48:33,851 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:48:33,857 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:48:33,858 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:48:33,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:48:33,860 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:48:33,861 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:48:33,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:48:33,864 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:48:33,866 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:48:33,867 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:48:33,868 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:48:33,869 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:48:33,872 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:48:33,873 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:48:33,873 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:48:33,874 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:48:33,874 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:48:33,875 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:48:33,876 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:48:33,876 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:48:33,877 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:48:33,878 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:48:33,879 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:48:33,879 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:48:33,880 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:48:33,880 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:48:33,880 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:48:33,881 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:48:33,882 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:48:33,883 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a463fc-5059-45e6-8ec3-2c4297aebdaa/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 01:48:33,909 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:48:33,909 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:48:33,910 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:48:33,910 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:48:33,911 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:48:33,911 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:48:33,911 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:48:33,911 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:48:33,912 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:48:33,912 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:48:33,912 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:48:33,912 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:48:33,912 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:48:33,913 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:48:33,913 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:48:33,913 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:48:33,913 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:48:33,913 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:48:33,914 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:48:33,914 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:48:33,915 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:48:33,915 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:48:33,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:48:33,915 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:48:33,915 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:48:33,916 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:48:33,916 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:48:33,916 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:48:33,916 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:48:33,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:48:33,917 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:48:33,917 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:48:33,917 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:48:33,917 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:48:33,917 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:48:33,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:48:33,918 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:48:33,918 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:48:33,918 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_73a463fc-5059-45e6-8ec3-2c4297aebdaa/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a463fc-5059-45e6-8ec3-2c4297aebdaa/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f78e25bf76e2d1d395e5e41868c5ddb628a36f1efdf095bb509ea6a3a366617b [2022-11-22 01:48:34,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:48:34,173 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:48:34,175 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:48:34,177 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:48:34,177 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:48:34,178 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a463fc-5059-45e6-8ec3-2c4297aebdaa/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_async.ko-entry_point.cil.out.i [2022-11-22 01:48:37,363 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:48:37,879 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:48:37,879 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a463fc-5059-45e6-8ec3-2c4297aebdaa/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_async.ko-entry_point.cil.out.i [2022-11-22 01:48:37,924 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a463fc-5059-45e6-8ec3-2c4297aebdaa/bin/utaipan-g80aRyZoba/data/c874421a1/bbe3716b9f364ef5a11aef108fab2e56/FLAG70fdb05ce [2022-11-22 01:48:37,944 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a463fc-5059-45e6-8ec3-2c4297aebdaa/bin/utaipan-g80aRyZoba/data/c874421a1/bbe3716b9f364ef5a11aef108fab2e56 [2022-11-22 01:48:37,947 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:48:37,948 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:48:37,950 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:48:37,950 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:48:37,954 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:48:37,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:48:37" (1/1) ... [2022-11-22 01:48:37,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@633fe0a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:48:37, skipping insertion in model container [2022-11-22 01:48:37,956 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:48:37" (1/1) ... [2022-11-22 01:48:37,964 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:48:38,096 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:48:39,020 WARN L237 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_73a463fc-5059-45e6-8ec3-2c4297aebdaa/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_async.ko-entry_point.cil.out.i[162928,162941] [2022-11-22 01:48:39,457 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:48:39,477 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:48:39,716 WARN L237 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_73a463fc-5059-45e6-8ec3-2c4297aebdaa/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_async.ko-entry_point.cil.out.i[162928,162941] [2022-11-22 01:48:39,843 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:48:39,897 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:48:39,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:48:39 WrapperNode [2022-11-22 01:48:39,898 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:48:39,899 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:48:39,899 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:48:39,899 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:48:39,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:48:39" (1/1) ... [2022-11-22 01:48:39,954 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:48:39" (1/1) ... [2022-11-22 01:48:40,108 INFO L138 Inliner]: procedures = 180, calls = 578, calls flagged for inlining = 99, calls inlined = 93, statements flattened = 2411 [2022-11-22 01:48:40,108 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:48:40,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:48:40,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:48:40,109 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:48:40,118 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:48:39" (1/1) ... [2022-11-22 01:48:40,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:48:39" (1/1) ... [2022-11-22 01:48:40,132 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:48:39" (1/1) ... [2022-11-22 01:48:40,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:48:39" (1/1) ... [2022-11-22 01:48:40,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:48:39" (1/1) ... [2022-11-22 01:48:40,203 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:48:39" (1/1) ... [2022-11-22 01:48:40,227 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:48:39" (1/1) ... [2022-11-22 01:48:40,235 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:48:39" (1/1) ... [2022-11-22 01:48:40,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:48:40,256 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:48:40,256 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:48:40,256 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:48:40,257 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:48:39" (1/1) ... [2022-11-22 01:48:40,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:48:40,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a463fc-5059-45e6-8ec3-2c4297aebdaa/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:48:40,286 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a463fc-5059-45e6-8ec3-2c4297aebdaa/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:48:40,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a463fc-5059-45e6-8ec3-2c4297aebdaa/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:48:40,327 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-22 01:48:40,327 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-22 01:48:40,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 01:48:40,327 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_async_push [2022-11-22 01:48:40,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_async_push [2022-11-22 01:48:40,328 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-11-22 01:48:40,328 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-11-22 01:48:40,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-22 01:48:40,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-22 01:48:40,328 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 01:48:40,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 01:48:40,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 01:48:40,329 INFO L130 BoogieDeclarations]: Found specification of procedure crc_ccitt_byte [2022-11-22 01:48:40,329 INFO L138 BoogieDeclarations]: Found implementation of procedure crc_ccitt_byte [2022-11-22 01:48:40,329 INFO L130 BoogieDeclarations]: Found specification of procedure ap_put [2022-11-22 01:48:40,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ap_put [2022-11-22 01:48:40,329 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_output_wakeup [2022-11-22 01:48:40,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_output_wakeup [2022-11-22 01:48:40,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-22 01:48:40,330 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-22 01:48:40,330 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-11-22 01:48:40,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-11-22 01:48:40,330 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 01:48:40,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 01:48:40,331 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_hangup [2022-11-22 01:48:40,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_hangup [2022-11-22 01:48:40,332 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-22 01:48:40,332 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-22 01:48:40,333 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2022-11-22 01:48:40,333 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2022-11-22 01:48:40,333 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be16 [2022-11-22 01:48:40,333 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be16 [2022-11-22 01:48:40,333 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-11-22 01:48:40,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-11-22 01:48:40,334 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-22 01:48:40,334 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-22 01:48:40,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 01:48:40,335 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-22 01:48:40,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-22 01:48:40,335 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 01:48:40,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 01:48:40,336 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-22 01:48:40,336 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-22 01:48:40,336 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-22 01:48:40,336 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-22 01:48:40,336 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_close [2022-11-22 01:48:40,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_close [2022-11-22 01:48:40,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 01:48:40,337 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_poll [2022-11-22 01:48:40,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_poll [2022-11-22 01:48:40,338 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-22 01:48:40,338 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-22 01:48:40,339 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-22 01:48:40,339 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-22 01:48:40,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:48:40,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:48:40,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 01:48:40,340 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2022-11-22 01:48:40,340 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2022-11-22 01:48:40,340 INFO L130 BoogieDeclarations]: Found specification of procedure ap_get [2022-11-22 01:48:40,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ap_get [2022-11-22 01:48:40,341 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2022-11-22 01:48:40,341 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2022-11-22 01:48:40,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 01:48:40,341 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-11-22 01:48:40,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-11-22 01:48:40,341 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2022-11-22 01:48:40,341 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2022-11-22 01:48:40,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:48:40,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 01:48:40,342 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-22 01:48:40,342 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-22 01:48:40,342 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-22 01:48:40,343 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-22 01:48:40,343 INFO L130 BoogieDeclarations]: Found specification of procedure async_lcp_peek [2022-11-22 01:48:40,343 INFO L138 BoogieDeclarations]: Found implementation of procedure async_lcp_peek [2022-11-22 01:48:40,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:48:40,344 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-11-22 01:48:40,344 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-11-22 01:48:40,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-22 01:48:40,345 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-22 01:48:40,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-22 01:48:40,345 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-22 01:48:40,345 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-22 01:48:40,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:48:40,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:48:40,346 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_ioctl [2022-11-22 01:48:40,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_ioctl [2022-11-22 01:48:40,346 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-11-22 01:48:40,346 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-11-22 01:48:40,832 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:48:40,834 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:48:41,452 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 01:48:45,164 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:48:46,229 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:48:46,229 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-22 01:48:46,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:48:46 BoogieIcfgContainer [2022-11-22 01:48:46,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:48:46,240 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:48:46,240 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:48:46,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:48:46,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:48:37" (1/3) ... [2022-11-22 01:48:46,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@246d459b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:48:46, skipping insertion in model container [2022-11-22 01:48:46,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:48:39" (2/3) ... [2022-11-22 01:48:46,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@246d459b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:48:46, skipping insertion in model container [2022-11-22 01:48:46,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:48:46" (3/3) ... [2022-11-22 01:48:46,247 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_async.ko-entry_point.cil.out.i [2022-11-22 01:48:46,266 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:48:46,266 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 01:48:46,350 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:48:46,358 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;@6668229b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:48:46,360 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 01:48:46,368 INFO L276 IsEmpty]: Start isEmpty. Operand has 474 states, 320 states have (on average 1.440625) internal successors, (461), 334 states have internal predecessors, (461), 116 states have call successors, (116), 37 states have call predecessors, (116), 36 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2022-11-22 01:48:46,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-22 01:48:46,384 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:48:46,385 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] [2022-11-22 01:48:46,385 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:48:46,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:48:46,393 INFO L85 PathProgramCache]: Analyzing trace with hash -362074703, now seen corresponding path program 1 times [2022-11-22 01:48:46,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:48:46,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148381113] [2022-11-22 01:48:46,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:48:46,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:48:46,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:48:46,946 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-11-22 01:48:46,946 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:48:46,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148381113] [2022-11-22 01:48:46,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148381113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:48:46,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:48:46,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:48:46,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984776994] [2022-11-22 01:48:46,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:48:46,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:48:46,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:48:46,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:48:46,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:48:46,987 INFO L87 Difference]: Start difference. First operand has 474 states, 320 states have (on average 1.440625) internal successors, (461), 334 states have internal predecessors, (461), 116 states have call successors, (116), 37 states have call predecessors, (116), 36 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-22 01:48:50,216 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 [] [2022-11-22 01:48:50,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:48:50,474 INFO L93 Difference]: Finished difference Result 1364 states and 2015 transitions. [2022-11-22 01:48:50,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:48:50,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 71 [2022-11-22 01:48:50,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:48:50,493 INFO L225 Difference]: With dead ends: 1364 [2022-11-22 01:48:50,493 INFO L226 Difference]: Without dead ends: 899 [2022-11-22 01:48:50,499 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 [2022-11-22 01:48:50,502 INFO L413 NwaCegarLoop]: 678 mSDtfsCounter, 626 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:48:50,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 1248 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 220 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-11-22 01:48:50,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2022-11-22 01:48:50,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 898. [2022-11-22 01:48:50,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 898 states, 617 states have (on average 1.4197730956239871) internal successors, (876), 633 states have internal predecessors, (876), 210 states have call successors, (210), 71 states have call predecessors, (210), 70 states have return successors, (209), 208 states have call predecessors, (209), 209 states have call successors, (209) [2022-11-22 01:48:50,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 1295 transitions. [2022-11-22 01:48:50,615 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 1295 transitions. Word has length 71 [2022-11-22 01:48:50,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:48:50,615 INFO L495 AbstractCegarLoop]: Abstraction has 898 states and 1295 transitions. [2022-11-22 01:48:50,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-22 01:48:50,616 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 1295 transitions. [2022-11-22 01:48:50,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-22 01:48:50,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:48:50,620 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] [2022-11-22 01:48:50,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:48:50,620 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:48:50,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:48:50,621 INFO L85 PathProgramCache]: Analyzing trace with hash 175421533, now seen corresponding path program 1 times [2022-11-22 01:48:50,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:48:50,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863004749] [2022-11-22 01:48:50,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:48:50,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:48:50,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:48:50,956 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-11-22 01:48:50,957 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:48:50,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863004749] [2022-11-22 01:48:50,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863004749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:48:50,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:48:50,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:48:50,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545337018] [2022-11-22 01:48:50,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:48:50,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:48:50,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:48:50,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:48:50,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:48:50,961 INFO L87 Difference]: Start difference. First operand 898 states and 1295 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-22 01:48:54,467 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 [] [2022-11-22 01:48:54,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:48:54,519 INFO L93 Difference]: Finished difference Result 1773 states and 2585 transitions. [2022-11-22 01:48:54,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:48:54,520 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 74 [2022-11-22 01:48:54,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:48:54,532 INFO L225 Difference]: With dead ends: 1773 [2022-11-22 01:48:54,532 INFO L226 Difference]: Without dead ends: 1768 [2022-11-22 01:48:54,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:48:54,535 INFO L413 NwaCegarLoop]: 672 mSDtfsCounter, 652 mSDsluCounter, 1220 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 1892 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:48:54,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 1892 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 332 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-11-22 01:48:54,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2022-11-22 01:48:54,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 1759. [2022-11-22 01:48:54,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1759 states, 1210 states have (on average 1.4231404958677687) internal successors, (1722), 1242 states have internal predecessors, (1722), 408 states have call successors, (408), 141 states have call predecessors, (408), 140 states have return successors, (437), 404 states have call predecessors, (437), 407 states have call successors, (437) [2022-11-22 01:48:54,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1759 states to 1759 states and 2567 transitions. [2022-11-22 01:48:54,694 INFO L78 Accepts]: Start accepts. Automaton has 1759 states and 2567 transitions. Word has length 74 [2022-11-22 01:48:54,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:48:54,697 INFO L495 AbstractCegarLoop]: Abstraction has 1759 states and 2567 transitions. [2022-11-22 01:48:54,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-22 01:48:54,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1759 states and 2567 transitions. [2022-11-22 01:48:54,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-22 01:48:54,707 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:48:54,707 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:48:54,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:48:54,707 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:48:54,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:48:54,708 INFO L85 PathProgramCache]: Analyzing trace with hash 737862488, now seen corresponding path program 1 times [2022-11-22 01:48:54,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:48:54,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519379574] [2022-11-22 01:48:54,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:48:54,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:48:54,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:48:54,953 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-11-22 01:48:54,953 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:48:54,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519379574] [2022-11-22 01:48:54,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519379574] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:48:54,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:48:54,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:48:54,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930309777] [2022-11-22 01:48:54,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:48:54,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:48:54,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:48:54,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:48:54,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:48:54,956 INFO L87 Difference]: Start difference. First operand 1759 states and 2567 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-22 01:48:57,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:48:57,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:48:57,977 INFO L93 Difference]: Finished difference Result 4344 states and 6311 transitions. [2022-11-22 01:48:57,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:48:57,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 114 [2022-11-22 01:48:57,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:48:57,992 INFO L225 Difference]: With dead ends: 4344 [2022-11-22 01:48:57,992 INFO L226 Difference]: Without dead ends: 2606 [2022-11-22 01:48:57,998 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 [2022-11-22 01:48:58,000 INFO L413 NwaCegarLoop]: 615 mSDtfsCounter, 339 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-22 01:48:58,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 1122 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 240 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-11-22 01:48:58,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2606 states. [2022-11-22 01:48:58,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2606 to 2599. [2022-11-22 01:48:58,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2599 states, 1794 states have (on average 1.4169453734671127) internal successors, (2542), 1836 states have internal predecessors, (2542), 592 states have call successors, (592), 213 states have call predecessors, (592), 212 states have return successors, (631), 586 states have call predecessors, (631), 591 states have call successors, (631) [2022-11-22 01:48:58,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2599 states to 2599 states and 3765 transitions. [2022-11-22 01:48:58,187 INFO L78 Accepts]: Start accepts. Automaton has 2599 states and 3765 transitions. Word has length 114 [2022-11-22 01:48:58,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:48:58,189 INFO L495 AbstractCegarLoop]: Abstraction has 2599 states and 3765 transitions. [2022-11-22 01:48:58,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-22 01:48:58,190 INFO L276 IsEmpty]: Start isEmpty. Operand 2599 states and 3765 transitions. [2022-11-22 01:48:58,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-22 01:48:58,207 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:48:58,208 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:48:58,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:48:58,208 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:48:58,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:48:58,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1376704315, now seen corresponding path program 1 times [2022-11-22 01:48:58,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:48:58,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466947345] [2022-11-22 01:48:58,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:48:58,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:48:58,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:48:58,416 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2022-11-22 01:48:58,416 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:48:58,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466947345] [2022-11-22 01:48:58,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466947345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:48:58,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:48:58,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:48:58,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028195130] [2022-11-22 01:48:58,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:48:58,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:48:58,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:48:58,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:48:58,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:48:58,422 INFO L87 Difference]: Start difference. First operand 2599 states and 3765 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-22 01:49:01,652 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 [] [2022-11-22 01:49:01,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:49:01,677 INFO L93 Difference]: Finished difference Result 6435 states and 9288 transitions. [2022-11-22 01:49:01,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:49:01,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 146 [2022-11-22 01:49:01,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:49:01,698 INFO L225 Difference]: With dead ends: 6435 [2022-11-22 01:49:01,699 INFO L226 Difference]: Without dead ends: 3857 [2022-11-22 01:49:01,708 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 [2022-11-22 01:49:01,709 INFO L413 NwaCegarLoop]: 860 mSDtfsCounter, 448 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:49:01,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 1390 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 271 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2022-11-22 01:49:01,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3857 states. [2022-11-22 01:49:01,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3857 to 3851. [2022-11-22 01:49:01,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3851 states, 2695 states have (on average 1.4241187384044527) internal successors, (3838), 2761 states have internal predecessors, (3838), 821 states have call successors, (821), 335 states have call predecessors, (821), 334 states have return successors, (882), 811 states have call predecessors, (882), 820 states have call successors, (882) [2022-11-22 01:49:01,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3851 states to 3851 states and 5541 transitions. [2022-11-22 01:49:01,966 INFO L78 Accepts]: Start accepts. Automaton has 3851 states and 5541 transitions. Word has length 146 [2022-11-22 01:49:01,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:49:01,967 INFO L495 AbstractCegarLoop]: Abstraction has 3851 states and 5541 transitions. [2022-11-22 01:49:01,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-22 01:49:01,967 INFO L276 IsEmpty]: Start isEmpty. Operand 3851 states and 5541 transitions. [2022-11-22 01:49:01,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-22 01:49:01,975 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:49:01,975 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:49:01,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 01:49:01,976 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:49:01,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:49:01,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1394467334, now seen corresponding path program 1 times [2022-11-22 01:49:01,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:49:01,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661200589] [2022-11-22 01:49:01,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:49:01,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:49:02,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:49:02,158 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2022-11-22 01:49:02,159 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:49:02,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661200589] [2022-11-22 01:49:02,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661200589] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:49:02,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:49:02,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:49:02,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504504167] [2022-11-22 01:49:02,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:49:02,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:49:02,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:49:02,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:49:02,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:49:02,161 INFO L87 Difference]: Start difference. First operand 3851 states and 5541 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-22 01:49:05,373 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 [] [2022-11-22 01:49:05,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:49:05,381 INFO L93 Difference]: Finished difference Result 9392 states and 13441 transitions. [2022-11-22 01:49:05,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:49:05,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 141 [2022-11-22 01:49:05,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:49:05,419 INFO L225 Difference]: With dead ends: 9392 [2022-11-22 01:49:05,419 INFO L226 Difference]: Without dead ends: 5570 [2022-11-22 01:49:05,430 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 [2022-11-22 01:49:05,431 INFO L413 NwaCegarLoop]: 655 mSDtfsCounter, 447 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:49:05,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 1161 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 246 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-11-22 01:49:05,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5570 states. [2022-11-22 01:49:05,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5570 to 5463. [2022-11-22 01:49:05,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5463 states, 3849 states have (on average 1.408677578591842) internal successors, (5422), 3934 states have internal predecessors, (5422), 1103 states have call successors, (1103), 511 states have call predecessors, (1103), 510 states have return successors, (1192), 1098 states have call predecessors, (1192), 1102 states have call successors, (1192) [2022-11-22 01:49:05,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5463 states to 5463 states and 7717 transitions. [2022-11-22 01:49:05,685 INFO L78 Accepts]: Start accepts. Automaton has 5463 states and 7717 transitions. Word has length 141 [2022-11-22 01:49:05,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:49:05,686 INFO L495 AbstractCegarLoop]: Abstraction has 5463 states and 7717 transitions. [2022-11-22 01:49:05,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-22 01:49:05,686 INFO L276 IsEmpty]: Start isEmpty. Operand 5463 states and 7717 transitions. [2022-11-22 01:49:05,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-22 01:49:05,694 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:49:05,695 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:49:05,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 01:49:05,697 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:49:05,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:49:05,697 INFO L85 PathProgramCache]: Analyzing trace with hash -115269721, now seen corresponding path program 1 times [2022-11-22 01:49:05,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:49:05,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692643816] [2022-11-22 01:49:05,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:49:05,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:49:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:49:06,230 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2022-11-22 01:49:06,230 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:49:06,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692643816] [2022-11-22 01:49:06,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692643816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:49:06,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:49:06,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:49:06,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472081004] [2022-11-22 01:49:06,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:49:06,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:49:06,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:49:06,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:49:06,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:49:06,232 INFO L87 Difference]: Start difference. First operand 5463 states and 7717 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-22 01:49:09,572 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 [] [2022-11-22 01:49:09,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:49:09,697 INFO L93 Difference]: Finished difference Result 8208 states and 11643 transitions. [2022-11-22 01:49:09,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:49:09,698 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 135 [2022-11-22 01:49:09,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:49:09,743 INFO L225 Difference]: With dead ends: 8208 [2022-11-22 01:49:09,743 INFO L226 Difference]: Without dead ends: 8203 [2022-11-22 01:49:09,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:49:09,749 INFO L413 NwaCegarLoop]: 669 mSDtfsCounter, 625 mSDsluCounter, 1217 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 1886 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:49:09,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [625 Valid, 1886 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 333 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2022-11-22 01:49:09,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8203 states. [2022-11-22 01:49:10,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8203 to 8169. [2022-11-22 01:49:10,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8169 states, 5751 states have (on average 1.4082768214223613) internal successors, (8099), 5879 states have internal predecessors, (8099), 1652 states have call successors, (1652), 766 states have call predecessors, (1652), 765 states have return successors, (1831), 1645 states have call predecessors, (1831), 1651 states have call successors, (1831) [2022-11-22 01:49:10,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8169 states to 8169 states and 11582 transitions. [2022-11-22 01:49:10,239 INFO L78 Accepts]: Start accepts. Automaton has 8169 states and 11582 transitions. Word has length 135 [2022-11-22 01:49:10,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:49:10,240 INFO L495 AbstractCegarLoop]: Abstraction has 8169 states and 11582 transitions. [2022-11-22 01:49:10,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-22 01:49:10,242 INFO L276 IsEmpty]: Start isEmpty. Operand 8169 states and 11582 transitions. [2022-11-22 01:49:10,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-22 01:49:10,250 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:49:10,251 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:49:10,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 01:49:10,251 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:49:10,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:49:10,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1236956662, now seen corresponding path program 1 times [2022-11-22 01:49:10,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:49:10,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86264169] [2022-11-22 01:49:10,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:49:10,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:49:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:49:10,394 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-11-22 01:49:10,394 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:49:10,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86264169] [2022-11-22 01:49:10,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86264169] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:49:10,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:49:10,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:49:10,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579739453] [2022-11-22 01:49:10,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:49:10,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:49:10,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:49:10,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:49:10,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:49:10,397 INFO L87 Difference]: Start difference. First operand 8169 states and 11582 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-22 01:49:13,745 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 [] [2022-11-22 01:49:13,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:49:13,815 INFO L93 Difference]: Finished difference Result 10964 states and 15756 transitions. [2022-11-22 01:49:13,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:49:13,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 145 [2022-11-22 01:49:13,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:49:13,880 INFO L225 Difference]: With dead ends: 10964 [2022-11-22 01:49:13,880 INFO L226 Difference]: Without dead ends: 8219 [2022-11-22 01:49:13,895 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 [2022-11-22 01:49:13,895 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 4 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:49:13,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1126 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 212 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2022-11-22 01:49:13,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8219 states. [2022-11-22 01:49:14,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8219 to 8219. [2022-11-22 01:49:14,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8219 states, 5791 states have (on average 1.4054567432222413) internal successors, (8139), 5929 states have internal predecessors, (8139), 1652 states have call successors, (1652), 766 states have call predecessors, (1652), 775 states have return successors, (1841), 1645 states have call predecessors, (1841), 1651 states have call successors, (1841) [2022-11-22 01:49:14,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8219 states to 8219 states and 11632 transitions. [2022-11-22 01:49:14,374 INFO L78 Accepts]: Start accepts. Automaton has 8219 states and 11632 transitions. Word has length 145 [2022-11-22 01:49:14,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:49:14,374 INFO L495 AbstractCegarLoop]: Abstraction has 8219 states and 11632 transitions. [2022-11-22 01:49:14,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-22 01:49:14,375 INFO L276 IsEmpty]: Start isEmpty. Operand 8219 states and 11632 transitions. [2022-11-22 01:49:14,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-22 01:49:14,384 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:49:14,384 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:49:14,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 01:49:14,384 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:49:14,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:49:14,385 INFO L85 PathProgramCache]: Analyzing trace with hash 77298234, now seen corresponding path program 1 times [2022-11-22 01:49:14,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:49:14,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054598652] [2022-11-22 01:49:14,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:49:14,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:49:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:49:15,120 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2022-11-22 01:49:15,120 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:49:15,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054598652] [2022-11-22 01:49:15,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054598652] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:49:15,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937205723] [2022-11-22 01:49:15,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:49:15,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:49:15,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a463fc-5059-45e6-8ec3-2c4297aebdaa/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:49:15,126 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a463fc-5059-45e6-8ec3-2c4297aebdaa/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:49:15,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a463fc-5059-45e6-8ec3-2c4297aebdaa/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 01:49:15,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:49:15,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 1105 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-22 01:49:15,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:49:16,116 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 89 proven. 5 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2022-11-22 01:49:16,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:49:17,496 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-11-22 01:49:17,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937205723] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:49:17,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [745031002] [2022-11-22 01:49:17,525 INFO L159 IcfgInterpreter]: Started Sifa with 86 locations of interest [2022-11-22 01:49:17,526 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:49:17,530 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:49:17,536 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:49:17,536 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:49:17,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 233 treesize of output 197 [2022-11-22 01:49:17,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 231 treesize of output 195 [2022-11-22 01:49:18,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:49:18,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:49:18,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:49:18,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:49:18,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:49:18,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:49:18,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:49:18,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:49:18,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 33 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 49 [2022-11-22 01:49:18,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:49:18,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:49:18,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:49:18,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:49:18,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:49:18,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:49:18,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:49:18,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:49:18,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 33 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 49 [2022-11-22 01:49:30,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-11-22 01:49:30,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-11-22 01:49:30,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-22 01:49:30,984 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:49:30,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 143 treesize of output 139 [2022-11-22 01:49:31,014 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:49:31,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 131 treesize of output 127 [2022-11-22 01:49:31,244 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:49:31,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 143 treesize of output 139 [2022-11-22 01:49:31,295 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:49:31,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 131 treesize of output 127 [2022-11-22 01:49:31,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-22 01:49:31,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-22 01:49:31,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-22 01:49:31,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-22 01:49:31,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 01:49:54,982 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_zalloc with input of size 117 for LOIs [2022-11-22 01:49:55,044 INFO L197 IcfgInterpreter]: Interpreting procedure ppp_asynctty_hangup with input of size 125 for LOIs [2022-11-22 01:49:55,359 INFO L197 IcfgInterpreter]: Interpreting procedure ppp_asynctty_close with input of size 125 for LOIs [2022-11-22 01:49:55,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23 [2022-11-22 01:49:55,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-22 01:49:55,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-11-22 01:49:55,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2022-11-22 01:49:55,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-22 01:49:55,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 15 [2022-11-22 01:49:56,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-22 01:49:56,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-22 01:49:56,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-22 01:49:56,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-22 01:49:56,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-22 01:49:56,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-22 01:49:56,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-22 01:49:56,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-22 01:49:58,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 15 [2022-11-22 01:49:58,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-11-22 01:49:58,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-22 01:49:58,212 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_skb_free with input of size 144 for LOIs [2022-11-22 01:49:59,084 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_set_remove with input of size 147 for LOIs [2022-11-22 01:49:59,613 INFO L197 IcfgInterpreter]: Interpreting procedure kfree with input of size 70 for LOIs [2022-11-22 01:49:59,626 INFO L197 IcfgInterpreter]: Interpreting procedure atomic_dec_and_test with input of size 125 for LOIs [2022-11-22 01:49:59,657 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_error with input of size 107 for LOIs [2022-11-22 01:49:59,681 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:55:49,517 WARN L233 SmtUtils]: Spent 4.15m on a formula simplification. DAG size of input: 144 DAG size of output: 110 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:58:38,692 WARN L233 SmtUtils]: Spent 2.81m on a formula simplification. DAG size of input: 148 DAG size of output: 114 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:00:42,905 WARN L233 SmtUtils]: Spent 2.00m on a formula simplification. DAG size of input: 140 DAG size of output: 115 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:01:16,594 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '108336#(and (<= 0 ~ldv_state_variable_2~0) (= |~#set_impl~0.offset| 0) (= ~LDV_IN_INTERRUPT~0 1) (<= ~async_ops_group0~0.base 0) (= ~LDV_SKBS~0.base 0) (= ~ldv_retval_1~0 0) (<= ~last_index~0 0) (= ~LDV_SKBS~0.offset 0) (<= ~ldv_state_variable_1~0 1) (<= ~ppp_ldisc_group1~0.base 0) (<= 0 ~ppp_ldisc_group1~0.offset) (<= 0 ~ldv_state_variable_1~0) (<= 0 ~ppp_ldisc_group1~0.base) (= |~#async_ops~0.offset| 0) (= ~ldv_state_variable_0~0 2) (<= 0 ~async_ops_group0~0.offset) (= ~ref_cnt~0 0) (= |~#disc_data_lock~0.offset| 0) (= |~#async_ops~0.base| 13) (= |#NULL.offset| 0) (<= ~ppp_ldisc_group1~0.offset 0) (= ~ldv_retval_0~0 0) (<= |~#disc_data_lock~0.base| 14) (<= 0 |~#ppp_ldisc~0.offset|) (<= |~#ppp_ldisc~0.base| 15) (<= 0 ~async_ops_group0~0.base) (<= ~ldv_state_variable_2~0 1) (<= |~#ppp_ldisc~0.offset| 0) (= 16 |~#set_impl~0.base|) (<= 0 |#StackHeapBarrier|) (<= 15 |~#ppp_ldisc~0.base|) (= (ite (= ~last_index~0 0) 1 0) 0) (<= ~async_ops_group0~0.offset 0) (= ~flag_time~0 250) (= |#NULL.base| 0) (<= 14 |~#disc_data_lock~0.base|))' at error location [2022-11-22 02:01:16,594 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:01:16,594 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:01:16,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2022-11-22 02:01:16,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355524819] [2022-11-22 02:01:16,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:01:16,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-22 02:01:16,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:01:16,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-22 02:01:16,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=6688, Unknown=0, NotChecked=0, Total=7310 [2022-11-22 02:01:16,598 INFO L87 Difference]: Start difference. First operand 8219 states and 11632 transitions. Second operand has 14 states, 14 states have (on average 9.428571428571429) internal successors, (132), 13 states have internal predecessors, (132), 9 states have call successors, (38), 7 states have call predecessors, (38), 7 states have return successors, (38), 9 states have call predecessors, (38), 8 states have call successors, (38) [2022-11-22 02:01:24,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:01:30,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:01:31,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:01:31,070 INFO L93 Difference]: Finished difference Result 18644 states and 26464 transitions. [2022-11-22 02:01:31,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-22 02:01:31,071 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.428571428571429) internal successors, (132), 13 states have internal predecessors, (132), 9 states have call successors, (38), 7 states have call predecessors, (38), 7 states have return successors, (38), 9 states have call predecessors, (38), 8 states have call successors, (38) Word has length 146 [2022-11-22 02:01:31,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:01:31,131 INFO L225 Difference]: With dead ends: 18644 [2022-11-22 02:01:31,131 INFO L226 Difference]: Without dead ends: 10454 [2022-11-22 02:01:31,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 355 SyntacticMatches, 17 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4000 ImplicationChecksByTransitivity, 677.3s TimeCoverageRelationStatistics Valid=697, Invalid=7859, Unknown=0, NotChecked=0, Total=8556 [2022-11-22 02:01:31,167 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 2382 mSDsluCounter, 2240 mSDsCounter, 0 mSdLazyCounter, 3801 mSolverCounterSat, 1344 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2474 SdHoareTripleChecker+Valid, 2789 SdHoareTripleChecker+Invalid, 5146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1344 IncrementalHoareTripleChecker+Valid, 3801 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:01:31,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2474 Valid, 2789 Invalid, 5146 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1344 Valid, 3801 Invalid, 1 Unknown, 0 Unchecked, 13.7s Time] [2022-11-22 02:01:31,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10454 states. [2022-11-22 02:01:31,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10454 to 10235. [2022-11-22 02:01:31,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10235 states, 7063 states have (on average 1.3845391476709614) internal successors, (9779), 7275 states have internal predecessors, (9779), 2145 states have call successors, (2145), 973 states have call predecessors, (2145), 1026 states have return successors, (2520), 2150 states have call predecessors, (2520), 2144 states have call successors, (2520) [2022-11-22 02:01:31,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10235 states to 10235 states and 14444 transitions. [2022-11-22 02:01:31,726 INFO L78 Accepts]: Start accepts. Automaton has 10235 states and 14444 transitions. Word has length 146 [2022-11-22 02:01:31,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:01:31,727 INFO L495 AbstractCegarLoop]: Abstraction has 10235 states and 14444 transitions. [2022-11-22 02:01:31,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.428571428571429) internal successors, (132), 13 states have internal predecessors, (132), 9 states have call successors, (38), 7 states have call predecessors, (38), 7 states have return successors, (38), 9 states have call predecessors, (38), 8 states have call successors, (38) [2022-11-22 02:01:31,728 INFO L276 IsEmpty]: Start isEmpty. Operand 10235 states and 14444 transitions. [2022-11-22 02:01:31,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-22 02:01:31,753 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:01:31,753 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:01:31,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a463fc-5059-45e6-8ec3-2c4297aebdaa/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 02:01:31,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a463fc-5059-45e6-8ec3-2c4297aebdaa/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:01:31,963 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:01:31,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:01:31,963 INFO L85 PathProgramCache]: Analyzing trace with hash 2093734625, now seen corresponding path program 1 times [2022-11-22 02:01:31,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:01:31,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371529158] [2022-11-22 02:01:31,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:01:31,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:01:32,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:01:32,564 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2022-11-22 02:01:32,564 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:01:32,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371529158] [2022-11-22 02:01:32,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371529158] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:01:32,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:01:32,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:01:32,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763374055] [2022-11-22 02:01:32,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:01:32,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:01:32,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:01:32,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:01:32,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:01:32,568 INFO L87 Difference]: Start difference. First operand 10235 states and 14444 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-22 02:01:36,713 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 [] [2022-11-22 02:01:36,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:01:36,821 INFO L93 Difference]: Finished difference Result 20527 states and 28986 transitions. [2022-11-22 02:01:36,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:01:36,827 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 161 [2022-11-22 02:01:36,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:01:36,872 INFO L225 Difference]: With dead ends: 20527 [2022-11-22 02:01:36,873 INFO L226 Difference]: Without dead ends: 10321 [2022-11-22 02:01:36,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:01:36,906 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 2 mSDsluCounter, 1677 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2242 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-22 02:01:36,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2242 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 444 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2022-11-22 02:01:36,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10321 states. [2022-11-22 02:01:37,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10321 to 10283. [2022-11-22 02:01:37,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10283 states, 7099 states have (on average 1.3825890970559234) internal successors, (9815), 7311 states have internal predecessors, (9815), 2145 states have call successors, (2145), 973 states have call predecessors, (2145), 1038 states have return successors, (2535), 2162 states have call predecessors, (2535), 2144 states have call successors, (2535) [2022-11-22 02:01:37,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10283 states to 10283 states and 14495 transitions. [2022-11-22 02:01:37,525 INFO L78 Accepts]: Start accepts. Automaton has 10283 states and 14495 transitions. Word has length 161 [2022-11-22 02:01:37,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:01:37,526 INFO L495 AbstractCegarLoop]: Abstraction has 10283 states and 14495 transitions. [2022-11-22 02:01:37,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-22 02:01:37,527 INFO L276 IsEmpty]: Start isEmpty. Operand 10283 states and 14495 transitions. [2022-11-22 02:01:37,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-22 02:01:37,546 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:01:37,547 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:01:37,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 02:01:37,547 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:01:37,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:01:37,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1967550763, now seen corresponding path program 1 times [2022-11-22 02:01:37,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:01:37,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397984871] [2022-11-22 02:01:37,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:01:37,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:01:37,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:01:37,991 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2022-11-22 02:01:37,992 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:01:37,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397984871] [2022-11-22 02:01:37,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397984871] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:01:37,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:01:37,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:01:37,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047879929] [2022-11-22 02:01:37,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:01:37,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:01:37,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:01:37,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:01:37,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:01:37,994 INFO L87 Difference]: Start difference. First operand 10283 states and 14495 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-22 02:01:42,318 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 [] [2022-11-22 02:01:42,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:01:42,463 INFO L93 Difference]: Finished difference Result 23580 states and 33519 transitions. [2022-11-22 02:01:42,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:01:42,464 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 165 [2022-11-22 02:01:42,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:01:42,531 INFO L225 Difference]: With dead ends: 23580 [2022-11-22 02:01:42,531 INFO L226 Difference]: Without dead ends: 13326 [2022-11-22 02:01:42,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:01:42,564 INFO L413 NwaCegarLoop]: 784 mSDtfsCounter, 597 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 24 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 1514 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:01:42,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [625 Valid, 1514 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 576 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2022-11-22 02:01:42,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13326 states. [2022-11-22 02:01:43,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13326 to 12255. [2022-11-22 02:01:43,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12255 states, 8547 states have (on average 1.3896103896103895) internal successors, (11877), 8787 states have internal predecessors, (11877), 2523 states have call successors, (2523), 1113 states have call predecessors, (2523), 1184 states have return successors, (2965), 2536 states have call predecessors, (2965), 2522 states have call successors, (2965) [2022-11-22 02:01:43,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12255 states to 12255 states and 17365 transitions. [2022-11-22 02:01:43,382 INFO L78 Accepts]: Start accepts. Automaton has 12255 states and 17365 transitions. Word has length 165 [2022-11-22 02:01:43,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:01:43,383 INFO L495 AbstractCegarLoop]: Abstraction has 12255 states and 17365 transitions. [2022-11-22 02:01:43,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-22 02:01:43,383 INFO L276 IsEmpty]: Start isEmpty. Operand 12255 states and 17365 transitions. [2022-11-22 02:01:43,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-22 02:01:43,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:01:43,409 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:01:43,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 02:01:43,409 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:01:43,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:01:43,410 INFO L85 PathProgramCache]: Analyzing trace with hash -154241187, now seen corresponding path program 1 times [2022-11-22 02:01:43,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:01:43,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309347800] [2022-11-22 02:01:43,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:01:43,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:01:43,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:01:44,394 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2022-11-22 02:01:44,394 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:01:44,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309347800] [2022-11-22 02:01:44,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309347800] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:01:44,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753537124] [2022-11-22 02:01:44,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:01:44,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:01:44,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a463fc-5059-45e6-8ec3-2c4297aebdaa/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:01:44,399 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a463fc-5059-45e6-8ec3-2c4297aebdaa/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:01:44,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a463fc-5059-45e6-8ec3-2c4297aebdaa/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 02:01:45,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:01:45,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 2007 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-22 02:01:45,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:01:45,647 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 91 proven. 5 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2022-11-22 02:01:45,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:01:46,569 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2022-11-22 02:01:46,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753537124] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:01:46,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1252689273] [2022-11-22 02:01:46,575 INFO L159 IcfgInterpreter]: Started Sifa with 109 locations of interest [2022-11-22 02:01:46,575 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:01:46,575 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:01:46,576 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:01:46,576 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:01:46,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 233 treesize of output 197 [2022-11-22 02:01:46,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 231 treesize of output 195 [2022-11-22 02:01:47,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:01:47,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:01:47,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:01:47,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:01:47,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:01:47,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:01:47,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:01:47,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:01:47,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 33 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 49 [2022-11-22 02:01:47,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:01:47,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:01:47,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:01:47,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:01:47,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:01:47,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:01:47,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:01:47,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:01:47,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 33 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 49 [2022-11-22 02:02:01,183 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-22 02:02:01,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2022-11-22 02:02:01,257 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-22 02:02:01,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 21 [2022-11-22 02:02:01,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 02:02:01,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 02:02:02,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 02:02:02,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 02:02:02,811 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 02:02:06,414 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-22 02:02:06,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 21 [2022-11-22 02:02:06,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-11-22 02:02:06,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 02:02:06,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 02:02:07,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 02:02:07,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 02:02:08,183 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 02:02:09,228 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_zalloc with input of size 118 for LOIs [2022-11-22 02:02:09,294 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_malloc with input of size 114 for LOIs [2022-11-22 02:02:09,379 INFO L180 IcfgInterpreter]: Interpretation finished