./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--unix--unix.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdaad790-8730-4281-97cb-6813ce97f235/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdaad790-8730-4281-97cb-6813ce97f235/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdaad790-8730-4281-97cb-6813ce97f235/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdaad790-8730-4281-97cb-6813ce97f235/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--unix--unix.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdaad790-8730-4281-97cb-6813ce97f235/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdaad790-8730-4281-97cb-6813ce97f235/bin/uautomizer-DQz5hQGWxF --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash fe313da0c6b218ced50e4197dc755b81036d59e37c56d6141b10ae8e848ca9fd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:18:17,836 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:18:17,841 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:18:17,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:18:17,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:18:17,889 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:18:17,891 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:18:17,896 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:18:17,899 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:18:17,900 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:18:17,902 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:18:17,904 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:18:17,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:18:17,906 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:18:17,908 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:18:17,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:18:17,912 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:18:17,925 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:18:17,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:18:17,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:18:17,946 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:18:17,950 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:18:17,954 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:18:17,957 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:18:17,963 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:18:17,967 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:18:17,968 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:18:17,971 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:18:17,972 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:18:17,974 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:18:17,976 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:18:17,977 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:18:17,980 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:18:17,981 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:18:17,983 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:18:17,984 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:18:17,985 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:18:17,985 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:18:17,986 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:18:17,987 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:18:17,988 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:18:17,989 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdaad790-8730-4281-97cb-6813ce97f235/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-20 06:18:18,040 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:18:18,040 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:18:18,041 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:18:18,041 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:18:18,042 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:18:18,042 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:18:18,043 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:18:18,044 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:18:18,044 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:18:18,044 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:18:18,045 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:18:18,045 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:18:18,045 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:18:18,046 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:18:18,046 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:18:18,046 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:18:18,046 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:18:18,047 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:18:18,047 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:18:18,047 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:18:18,048 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:18:18,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:18:18,048 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:18:18,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:18:18,049 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:18:18,049 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:18:18,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:18:18,050 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:18:18,050 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:18:18,051 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:18:18,051 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:18:18,051 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_fdaad790-8730-4281-97cb-6813ce97f235/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdaad790-8730-4281-97cb-6813ce97f235/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe313da0c6b218ced50e4197dc755b81036d59e37c56d6141b10ae8e848ca9fd [2021-11-20 06:18:18,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:18:18,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:18:18,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:18:18,424 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:18:18,425 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:18:18,427 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdaad790-8730-4281-97cb-6813ce97f235/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--unix--unix.ko-entry_point.cil.out.i [2021-11-20 06:18:18,525 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdaad790-8730-4281-97cb-6813ce97f235/bin/uautomizer-DQz5hQGWxF/data/a7ebd47cf/7444b25cc37b43e3abb18c8be09c77f6/FLAG69a14fded [2021-11-20 06:18:19,731 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:18:19,733 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdaad790-8730-4281-97cb-6813ce97f235/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--unix--unix.ko-entry_point.cil.out.i [2021-11-20 06:18:19,799 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdaad790-8730-4281-97cb-6813ce97f235/bin/uautomizer-DQz5hQGWxF/data/a7ebd47cf/7444b25cc37b43e3abb18c8be09c77f6/FLAG69a14fded [2021-11-20 06:18:19,913 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdaad790-8730-4281-97cb-6813ce97f235/bin/uautomizer-DQz5hQGWxF/data/a7ebd47cf/7444b25cc37b43e3abb18c8be09c77f6 [2021-11-20 06:18:19,916 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:18:19,917 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:18:19,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:18:19,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:18:19,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:18:19,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:18:19" (1/1) ... [2021-11-20 06:18:19,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b48438e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:18:19, skipping insertion in model container [2021-11-20 06:18:19,926 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:18:19" (1/1) ... [2021-11-20 06:18:19,935 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:18:20,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:18:20,926 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5693] [2021-11-20 06:18:20,927 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5694-5695] [2021-11-20 06:18:21,802 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdaad790-8730-4281-97cb-6813ce97f235/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--unix--unix.ko-entry_point.cil.out.i[183417,183430] [2021-11-20 06:18:24,146 WARN L610 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-20 06:18:24,171 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:18:24,280 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:18:24,409 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5693] [2021-11-20 06:18:24,410 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5694-5695] [2021-11-20 06:18:24,430 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdaad790-8730-4281-97cb-6813ce97f235/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--unix--unix.ko-entry_point.cil.out.i[183417,183430] [2021-11-20 06:18:25,089 WARN L610 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-20 06:18:25,103 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:18:25,395 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:18:25,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:18:25 WrapperNode [2021-11-20 06:18:25,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:18:25,398 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:18:25,398 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:18:25,398 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:18:25,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:18:25" (1/1) ... [2021-11-20 06:18:25,572 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:18:25" (1/1) ... [2021-11-20 06:18:25,880 INFO L137 Inliner]: procedures = 454, calls = 2280, calls flagged for inlining = 217, calls inlined = 215, statements flattened = 7339 [2021-11-20 06:18:25,881 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:18:25,883 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:18:25,883 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:18:25,884 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:18:25,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:18:25" (1/1) ... [2021-11-20 06:18:25,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:18:25" (1/1) ... [2021-11-20 06:18:25,972 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:18:25" (1/1) ... [2021-11-20 06:18:25,973 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:18:25" (1/1) ... [2021-11-20 06:18:26,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:18:25" (1/1) ... [2021-11-20 06:18:26,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:18:25" (1/1) ... [2021-11-20 06:18:26,357 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:18:25" (1/1) ... [2021-11-20 06:18:26,399 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:18:26,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:18:26,401 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:18:26,401 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:18:26,402 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:18:25" (1/1) ... [2021-11-20 06:18:26,411 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:18:26,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdaad790-8730-4281-97cb-6813ce97f235/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:18:26,442 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdaad790-8730-4281-97cb-6813ce97f235/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:18:26,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdaad790-8730-4281-97cb-6813ce97f235/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:18:26,507 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-20 06:18:26,507 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-20 06:18:26,507 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-20 06:18:26,507 INFO L130 BoogieDeclarations]: Found specification of procedure unix_gc [2021-11-20 06:18:26,508 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_gc [2021-11-20 06:18:26,508 INFO L130 BoogieDeclarations]: Found specification of procedure unix_sysctl_unregister [2021-11-20 06:18:26,508 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_sysctl_unregister [2021-11-20 06:18:26,508 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2021-11-20 06:18:26,508 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2021-11-20 06:18:26,509 INFO L130 BoogieDeclarations]: Found specification of procedure seq_putc [2021-11-20 06:18:26,509 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_putc [2021-11-20 06:18:26,509 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-20 06:18:26,509 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-20 06:18:26,509 INFO L130 BoogieDeclarations]: Found specification of procedure sock_sndtimeo [2021-11-20 06:18:26,510 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_sndtimeo [2021-11-20 06:18:26,510 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-11-20 06:18:26,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-11-20 06:18:26,510 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 06:18:26,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 06:18:26,511 INFO L130 BoogieDeclarations]: Found specification of procedure unix_release_addr [2021-11-20 06:18:26,511 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_release_addr [2021-11-20 06:18:26,511 INFO L130 BoogieDeclarations]: Found specification of procedure unix_state_double_lock [2021-11-20 06:18:26,511 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_state_double_lock [2021-11-20 06:18:26,511 INFO L130 BoogieDeclarations]: Found specification of procedure unix_set_peek_off [2021-11-20 06:18:26,512 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_set_peek_off [2021-11-20 06:18:26,512 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2021-11-20 06:18:26,512 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2021-11-20 06:18:26,512 INFO L130 BoogieDeclarations]: Found specification of procedure unix_dgram_disconnected [2021-11-20 06:18:26,513 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_dgram_disconnected [2021-11-20 06:18:26,514 INFO L130 BoogieDeclarations]: Found specification of procedure __clear_bit [2021-11-20 06:18:26,514 INFO L138 BoogieDeclarations]: Found implementation of procedure __clear_bit [2021-11-20 06:18:26,514 INFO L130 BoogieDeclarations]: Found specification of procedure scm_destroy [2021-11-20 06:18:26,514 INFO L138 BoogieDeclarations]: Found implementation of procedure scm_destroy [2021-11-20 06:18:26,515 INFO L130 BoogieDeclarations]: Found specification of procedure put_cmsg [2021-11-20 06:18:26,515 INFO L138 BoogieDeclarations]: Found implementation of procedure put_cmsg [2021-11-20 06:18:26,515 INFO L130 BoogieDeclarations]: Found specification of procedure unix_create1 [2021-11-20 06:18:26,515 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_create1 [2021-11-20 06:18:26,516 INFO L130 BoogieDeclarations]: Found specification of procedure unix_dgram_poll [2021-11-20 06:18:26,516 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_dgram_poll [2021-11-20 06:18:26,516 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-20 06:18:26,517 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-20 06:18:26,517 INFO L130 BoogieDeclarations]: Found specification of procedure skb_peek [2021-11-20 06:18:26,518 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_peek [2021-11-20 06:18:26,518 INFO L130 BoogieDeclarations]: Found specification of procedure unix_recvq_full [2021-11-20 06:18:26,518 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_recvq_full [2021-11-20 06:18:26,518 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2021-11-20 06:18:26,518 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2021-11-20 06:18:26,519 INFO L130 BoogieDeclarations]: Found specification of procedure unix_shutdown [2021-11-20 06:18:26,519 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_shutdown [2021-11-20 06:18:26,520 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-20 06:18:26,520 INFO L130 BoogieDeclarations]: Found specification of procedure scan_children [2021-11-20 06:18:26,521 INFO L138 BoogieDeclarations]: Found implementation of procedure scan_children [2021-11-20 06:18:26,521 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-20 06:18:26,522 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2021-11-20 06:18:26,523 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2021-11-20 06:18:26,523 INFO L130 BoogieDeclarations]: Found specification of procedure sk_peek_offset_fwd [2021-11-20 06:18:26,523 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_peek_offset_fwd [2021-11-20 06:18:26,524 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-20 06:18:26,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 06:18:26,524 INFO L130 BoogieDeclarations]: Found specification of procedure unix_find_other [2021-11-20 06:18:26,525 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_find_other [2021-11-20 06:18:26,525 INFO L130 BoogieDeclarations]: Found specification of procedure unix_scm_to_skb [2021-11-20 06:18:26,526 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_scm_to_skb [2021-11-20 06:18:26,526 INFO L130 BoogieDeclarations]: Found specification of procedure scm_send [2021-11-20 06:18:26,526 INFO L138 BoogieDeclarations]: Found implementation of procedure scm_send [2021-11-20 06:18:26,526 INFO L130 BoogieDeclarations]: Found specification of procedure sk_set_socket [2021-11-20 06:18:26,526 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_set_socket [2021-11-20 06:18:26,526 INFO L130 BoogieDeclarations]: Found specification of procedure unix_autobind [2021-11-20 06:18:26,527 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_autobind [2021-11-20 06:18:26,527 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-20 06:18:26,527 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-20 06:18:26,527 INFO L130 BoogieDeclarations]: Found specification of procedure unix_release_sock [2021-11-20 06:18:26,527 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_release_sock [2021-11-20 06:18:26,528 INFO L130 BoogieDeclarations]: Found specification of procedure sock_put [2021-11-20 06:18:26,528 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_put [2021-11-20 06:18:26,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-20 06:18:26,528 INFO L130 BoogieDeclarations]: Found specification of procedure unix_mkname [2021-11-20 06:18:26,528 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_mkname [2021-11-20 06:18:26,529 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-20 06:18:26,529 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-20 06:18:26,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-20 06:18:26,529 INFO L130 BoogieDeclarations]: Found specification of procedure sock_intr_errno [2021-11-20 06:18:26,529 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_intr_errno [2021-11-20 06:18:26,530 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 06:18:26,531 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_long_inc [2021-11-20 06:18:26,531 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_long_inc [2021-11-20 06:18:26,531 INFO L130 BoogieDeclarations]: Found specification of procedure unix_may_send [2021-11-20 06:18:26,531 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_may_send [2021-11-20 06:18:26,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-20 06:18:26,532 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-20 06:18:26,533 INFO L130 BoogieDeclarations]: Found specification of procedure list_move_tail [2021-11-20 06:18:26,533 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move_tail [2021-11-20 06:18:26,533 INFO L130 BoogieDeclarations]: Found specification of procedure __validate_creds [2021-11-20 06:18:26,534 INFO L138 BoogieDeclarations]: Found implementation of procedure __validate_creds [2021-11-20 06:18:26,534 INFO L130 BoogieDeclarations]: Found specification of procedure unix_listen [2021-11-20 06:18:26,534 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_listen [2021-11-20 06:18:26,534 INFO L130 BoogieDeclarations]: Found specification of procedure sk_sleep [2021-11-20 06:18:26,534 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_sleep [2021-11-20 06:18:26,535 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2021-11-20 06:18:26,535 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2021-11-20 06:18:26,535 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-20 06:18:26,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-20 06:18:26,535 INFO L130 BoogieDeclarations]: Found specification of procedure seq_file_net [2021-11-20 06:18:26,536 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_file_net [2021-11-20 06:18:26,536 INFO L130 BoogieDeclarations]: Found specification of procedure kiocb_to_siocb [2021-11-20 06:18:26,536 INFO L138 BoogieDeclarations]: Found implementation of procedure kiocb_to_siocb [2021-11-20 06:18:26,537 INFO L130 BoogieDeclarations]: Found specification of procedure init_peercred [2021-11-20 06:18:26,537 INFO L138 BoogieDeclarations]: Found implementation of procedure init_peercred [2021-11-20 06:18:26,537 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-20 06:18:26,537 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-20 06:18:26,537 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_purge [2021-11-20 06:18:26,538 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_purge [2021-11-20 06:18:26,539 INFO L130 BoogieDeclarations]: Found specification of procedure unix_dgram_sendmsg [2021-11-20 06:18:26,542 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_dgram_sendmsg [2021-11-20 06:18:26,542 INFO L130 BoogieDeclarations]: Found specification of procedure unix_stream_connect [2021-11-20 06:18:26,543 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_stream_connect [2021-11-20 06:18:26,544 INFO L130 BoogieDeclarations]: Found specification of procedure get_cred [2021-11-20 06:18:26,544 INFO L138 BoogieDeclarations]: Found implementation of procedure get_cred [2021-11-20 06:18:26,545 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_long_dec [2021-11-20 06:18:26,545 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_long_dec [2021-11-20 06:18:26,545 INFO L130 BoogieDeclarations]: Found specification of procedure unix_skb_len [2021-11-20 06:18:26,546 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_skb_len [2021-11-20 06:18:26,552 INFO L130 BoogieDeclarations]: Found specification of procedure sock_flag [2021-11-20 06:18:26,553 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_flag [2021-11-20 06:18:26,553 INFO L130 BoogieDeclarations]: Found specification of procedure unix_state_double_unlock [2021-11-20 06:18:26,553 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_state_double_unlock [2021-11-20 06:18:26,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 06:18:26,554 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-11-20 06:18:26,554 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-11-20 06:18:26,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:18:26,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 06:18:26,554 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-20 06:18:26,555 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-20 06:18:26,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-20 06:18:26,555 INFO L130 BoogieDeclarations]: Found specification of procedure unix_net_exit [2021-11-20 06:18:26,555 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_net_exit [2021-11-20 06:18:26,555 INFO L130 BoogieDeclarations]: Found specification of procedure unix_detach_fds [2021-11-20 06:18:26,555 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_detach_fds [2021-11-20 06:18:26,556 INFO L130 BoogieDeclarations]: Found specification of procedure touch_atime [2021-11-20 06:18:26,556 INFO L138 BoogieDeclarations]: Found implementation of procedure touch_atime [2021-11-20 06:18:26,556 INFO L130 BoogieDeclarations]: Found specification of procedure unix_seq_stop [2021-11-20 06:18:26,556 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_seq_stop [2021-11-20 06:18:26,556 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-20 06:18:26,557 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-20 06:18:26,557 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2021-11-20 06:18:26,557 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2021-11-20 06:18:26,557 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_datagram_iovec [2021-11-20 06:18:26,557 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_datagram_iovec [2021-11-20 06:18:26,558 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-20 06:18:26,558 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-20 06:18:26,558 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-20 06:18:26,558 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-20 06:18:26,558 INFO L130 BoogieDeclarations]: Found specification of procedure unix_accept [2021-11-20 06:18:26,558 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_accept [2021-11-20 06:18:26,559 INFO L130 BoogieDeclarations]: Found specification of procedure unix_dgram_recvmsg [2021-11-20 06:18:26,559 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_dgram_recvmsg [2021-11-20 06:18:26,560 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-20 06:18:26,560 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-20 06:18:26,560 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2021-11-20 06:18:26,560 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2021-11-20 06:18:26,561 INFO L130 BoogieDeclarations]: Found specification of procedure unix_wait_for_peer [2021-11-20 06:18:26,561 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_wait_for_peer [2021-11-20 06:18:26,561 INFO L130 BoogieDeclarations]: Found specification of procedure unix_hash_fold [2021-11-20 06:18:26,561 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_hash_fold [2021-11-20 06:18:26,561 INFO L130 BoogieDeclarations]: Found specification of procedure scan_inflight [2021-11-20 06:18:26,562 INFO L138 BoogieDeclarations]: Found implementation of procedure scan_inflight [2021-11-20 06:18:26,562 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-11-20 06:18:26,562 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-11-20 06:18:26,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:18:26,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:18:26,563 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-20 06:18:26,563 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-20 06:18:26,563 INFO L130 BoogieDeclarations]: Found specification of procedure __kuid_val [2021-11-20 06:18:26,564 INFO L138 BoogieDeclarations]: Found implementation of procedure __kuid_val [2021-11-20 06:18:26,564 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock_bh [2021-11-20 06:18:26,564 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock_bh [2021-11-20 06:18:26,564 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock_bh [2021-11-20 06:18:26,564 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock_bh [2021-11-20 06:18:26,564 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-20 06:18:26,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-20 06:18:26,565 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-20 06:18:26,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-20 06:18:26,566 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_unlink [2021-11-20 06:18:26,566 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_unlink [2021-11-20 06:18:26,566 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-20 06:18:26,567 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-20 06:18:26,568 INFO L130 BoogieDeclarations]: Found specification of procedure unix_peer_get [2021-11-20 06:18:26,568 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_peer_get [2021-11-20 06:18:26,569 INFO L130 BoogieDeclarations]: Found specification of procedure unix_bind [2021-11-20 06:18:26,569 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_bind [2021-11-20 06:18:26,569 INFO L130 BoogieDeclarations]: Found specification of procedure sock_hold [2021-11-20 06:18:26,569 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_hold [2021-11-20 06:18:26,569 INFO L130 BoogieDeclarations]: Found specification of procedure unix_copy_addr [2021-11-20 06:18:26,570 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_copy_addr [2021-11-20 06:18:26,570 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2021-11-20 06:18:26,570 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2021-11-20 06:18:26,570 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2021-11-20 06:18:26,570 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2021-11-20 06:18:26,570 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-20 06:18:26,571 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-20 06:18:26,571 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-20 06:18:26,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-20 06:18:26,571 INFO L130 BoogieDeclarations]: Found specification of procedure sock_poll_wait [2021-11-20 06:18:26,571 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_poll_wait [2021-11-20 06:18:26,571 INFO L130 BoogieDeclarations]: Found specification of procedure __unix_find_socket_byname [2021-11-20 06:18:26,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __unix_find_socket_byname [2021-11-20 06:18:26,572 INFO L130 BoogieDeclarations]: Found specification of procedure sock_net [2021-11-20 06:18:26,572 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_net [2021-11-20 06:18:26,572 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-20 06:18:26,572 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-20 06:18:26,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-20 06:18:26,573 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-20 06:18:26,573 INFO L130 BoogieDeclarations]: Found specification of procedure scm_recv [2021-11-20 06:18:26,573 INFO L138 BoogieDeclarations]: Found implementation of procedure scm_recv [2021-11-20 06:18:26,573 INFO L130 BoogieDeclarations]: Found specification of procedure unix_release [2021-11-20 06:18:26,573 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_release [2021-11-20 06:18:26,574 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-20 06:18:26,574 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-20 06:18:26,574 INFO L130 BoogieDeclarations]: Found specification of procedure path_put [2021-11-20 06:18:26,574 INFO L138 BoogieDeclarations]: Found implementation of procedure path_put [2021-11-20 06:18:26,574 INFO L130 BoogieDeclarations]: Found specification of procedure sock_no_getsockopt [2021-11-20 06:18:26,575 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_no_getsockopt [2021-11-20 06:18:26,575 INFO L130 BoogieDeclarations]: Found specification of procedure sock_alloc_send_pskb [2021-11-20 06:18:26,575 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_alloc_send_pskb [2021-11-20 06:18:26,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 06:18:26,575 INFO L130 BoogieDeclarations]: Found specification of procedure sk_peek_offset [2021-11-20 06:18:26,575 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_peek_offset [2021-11-20 06:18:26,576 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-20 06:18:26,576 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-20 06:18:26,576 INFO L130 BoogieDeclarations]: Found specification of procedure unix_get_socket [2021-11-20 06:18:26,576 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_get_socket [2021-11-20 06:18:26,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 06:18:26,576 INFO L130 BoogieDeclarations]: Found specification of procedure sk_unhashed [2021-11-20 06:18:26,577 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_unhashed [2021-11-20 06:18:26,577 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del_entry [2021-11-20 06:18:26,577 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del_entry [2021-11-20 06:18:26,577 INFO L130 BoogieDeclarations]: Found specification of procedure get_pid [2021-11-20 06:18:26,577 INFO L138 BoogieDeclarations]: Found implementation of procedure get_pid [2021-11-20 06:18:26,578 INFO L130 BoogieDeclarations]: Found specification of procedure put_pid [2021-11-20 06:18:26,579 INFO L138 BoogieDeclarations]: Found implementation of procedure put_pid [2021-11-20 06:18:26,583 INFO L130 BoogieDeclarations]: Found specification of procedure scm_set_cred [2021-11-20 06:18:26,584 INFO L138 BoogieDeclarations]: Found implementation of procedure scm_set_cred [2021-11-20 06:18:26,584 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_tail [2021-11-20 06:18:26,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_tail [2021-11-20 06:18:26,584 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2021-11-20 06:18:26,584 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2021-11-20 06:18:26,585 INFO L130 BoogieDeclarations]: Found specification of procedure local_bh_disable [2021-11-20 06:18:26,585 INFO L138 BoogieDeclarations]: Found implementation of procedure local_bh_disable [2021-11-20 06:18:26,585 INFO L130 BoogieDeclarations]: Found specification of procedure sk_wake_async [2021-11-20 06:18:26,586 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_wake_async [2021-11-20 06:18:26,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 06:18:26,587 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-20 06:18:26,587 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-20 06:18:26,588 INFO L130 BoogieDeclarations]: Found specification of procedure maybe_add_creds [2021-11-20 06:18:26,588 INFO L138 BoogieDeclarations]: Found implementation of procedure maybe_add_creds [2021-11-20 06:18:26,588 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2021-11-20 06:18:26,588 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2021-11-20 06:18:26,588 INFO L130 BoogieDeclarations]: Found specification of procedure skb_free_datagram [2021-11-20 06:18:26,589 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_free_datagram [2021-11-20 06:18:26,589 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-20 06:18:26,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-20 06:18:26,589 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_datagram_from_iovec [2021-11-20 06:18:26,589 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_datagram_from_iovec [2021-11-20 06:18:26,589 INFO L130 BoogieDeclarations]: Found specification of procedure sock_prot_inuse_add [2021-11-20 06:18:26,590 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_prot_inuse_add [2021-11-20 06:18:26,590 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-20 06:18:26,590 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-20 06:18:26,590 INFO L130 BoogieDeclarations]: Found specification of procedure sk_next [2021-11-20 06:18:26,590 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_next [2021-11-20 06:18:26,590 INFO L130 BoogieDeclarations]: Found specification of procedure __unix_insert_socket [2021-11-20 06:18:26,591 INFO L138 BoogieDeclarations]: Found implementation of procedure __unix_insert_socket [2021-11-20 06:18:26,591 INFO L130 BoogieDeclarations]: Found specification of procedure sock_error [2021-11-20 06:18:26,591 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_error [2021-11-20 06:18:26,591 INFO L130 BoogieDeclarations]: Found specification of procedure __unix_remove_socket [2021-11-20 06:18:26,591 INFO L138 BoogieDeclarations]: Found implementation of procedure __unix_remove_socket [2021-11-20 06:18:26,591 INFO L130 BoogieDeclarations]: Found specification of procedure csum_partial [2021-11-20 06:18:26,592 INFO L138 BoogieDeclarations]: Found implementation of procedure csum_partial [2021-11-20 06:18:26,592 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-20 06:18:26,592 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-20 06:18:26,592 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2021-11-20 06:18:26,592 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2021-11-20 06:18:26,592 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-20 06:18:26,593 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-20 06:18:26,593 INFO L130 BoogieDeclarations]: Found specification of procedure scm_fp_dup [2021-11-20 06:18:26,593 INFO L138 BoogieDeclarations]: Found implementation of procedure scm_fp_dup [2021-11-20 06:18:26,593 INFO L130 BoogieDeclarations]: Found specification of procedure security_unix_may_send [2021-11-20 06:18:26,593 INFO L138 BoogieDeclarations]: Found implementation of procedure security_unix_may_send [2021-11-20 06:18:26,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 06:18:26,594 INFO L130 BoogieDeclarations]: Found specification of procedure sock_no_mmap [2021-11-20 06:18:26,594 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_no_mmap [2021-11-20 06:18:26,594 INFO L130 BoogieDeclarations]: Found specification of procedure scm_destroy_cred [2021-11-20 06:18:26,594 INFO L138 BoogieDeclarations]: Found implementation of procedure scm_destroy_cred [2021-11-20 06:18:26,594 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-20 06:18:26,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-20 06:18:26,595 INFO L130 BoogieDeclarations]: Found specification of procedure put_cred [2021-11-20 06:18:26,595 INFO L138 BoogieDeclarations]: Found implementation of procedure put_cred [2021-11-20 06:18:26,595 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up_sync_key [2021-11-20 06:18:26,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up_sync_key [2021-11-20 06:18:26,595 INFO L130 BoogieDeclarations]: Found specification of procedure __kgid_val [2021-11-20 06:18:26,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __kgid_val [2021-11-20 06:18:26,596 INFO L130 BoogieDeclarations]: Found specification of procedure task_tgid [2021-11-20 06:18:26,596 INFO L138 BoogieDeclarations]: Found implementation of procedure task_tgid [2021-11-20 06:18:26,596 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-20 06:18:26,596 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-20 06:18:26,596 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-11-20 06:18:26,596 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-11-20 06:18:26,597 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_unix_gc [2021-11-20 06:18:26,597 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_unix_gc [2021-11-20 06:18:26,597 INFO L130 BoogieDeclarations]: Found specification of procedure __set_bit [2021-11-20 06:18:26,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_bit [2021-11-20 06:18:26,597 INFO L130 BoogieDeclarations]: Found specification of procedure unix_next_socket [2021-11-20 06:18:26,597 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_next_socket [2021-11-20 06:18:26,598 INFO L130 BoogieDeclarations]: Found specification of procedure sock_no_setsockopt [2021-11-20 06:18:26,598 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_no_setsockopt [2021-11-20 06:18:26,598 INFO L130 BoogieDeclarations]: Found specification of procedure sk_peek_offset_bwd [2021-11-20 06:18:26,598 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_peek_offset_bwd [2021-11-20 06:18:26,598 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-20 06:18:26,598 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-20 06:18:26,599 INFO L130 BoogieDeclarations]: Found specification of procedure unix_writable [2021-11-20 06:18:26,599 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_writable [2021-11-20 06:18:26,599 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_long_read [2021-11-20 06:18:26,599 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_long_read [2021-11-20 06:18:26,599 INFO L130 BoogieDeclarations]: Found specification of procedure unix_socketpair [2021-11-20 06:18:26,599 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_socketpair [2021-11-20 06:18:26,600 INFO L130 BoogieDeclarations]: Found specification of procedure sock_no_sendpage [2021-11-20 06:18:26,600 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_no_sendpage [2021-11-20 06:18:26,600 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-20 06:18:26,600 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-20 06:18:26,600 INFO L130 BoogieDeclarations]: Found specification of procedure unix_getname [2021-11-20 06:18:26,600 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_getname [2021-11-20 06:18:26,601 INFO L130 BoogieDeclarations]: Found specification of procedure unix_ioctl [2021-11-20 06:18:26,601 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_ioctl [2021-11-20 06:18:26,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:18:26,601 INFO L130 BoogieDeclarations]: Found specification of procedure local_bh_enable [2021-11-20 06:18:26,601 INFO L138 BoogieDeclarations]: Found implementation of procedure local_bh_enable [2021-11-20 06:18:28,050 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:18:28,060 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:18:28,401 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-20 06:18:36,945 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:18:36,976 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:18:36,976 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 06:18:36,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:18:36 BoogieIcfgContainer [2021-11-20 06:18:36,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:18:36,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:18:36,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:18:37,028 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:18:37,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:18:19" (1/3) ... [2021-11-20 06:18:37,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@861168f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:18:37, skipping insertion in model container [2021-11-20 06:18:37,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:18:25" (2/3) ... [2021-11-20 06:18:37,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@861168f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:18:37, skipping insertion in model container [2021-11-20 06:18:37,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:18:36" (3/3) ... [2021-11-20 06:18:37,034 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--unix--unix.ko-entry_point.cil.out.i [2021-11-20 06:18:37,041 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:18:37,041 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 06:18:37,122 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:18:37,130 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 06:18:37,130 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 06:18:37,225 INFO L276 IsEmpty]: Start isEmpty. Operand has 2739 states, 1884 states have (on average 1.3540339702760085) internal successors, (2551), 1986 states have internal predecessors, (2551), 697 states have call successors, (697), 157 states have call predecessors, (697), 156 states have return successors, (688), 672 states have call predecessors, (688), 688 states have call successors, (688) [2021-11-20 06:18:37,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-11-20 06:18:37,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:18:37,272 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 28, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:18:37,273 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:18:37,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:18:37,279 INFO L85 PathProgramCache]: Analyzing trace with hash 517155252, now seen corresponding path program 1 times [2021-11-20 06:18:37,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:18:37,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396614174] [2021-11-20 06:18:37,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:18:37,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:18:37,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:38,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:18:38,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:38,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 06:18:38,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:38,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-20 06:18:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:38,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 06:18:38,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:38,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-20 06:18:38,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:38,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 06:18:38,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:38,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-20 06:18:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:38,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-20 06:18:38,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:38,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 06:18:38,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:38,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-20 06:18:38,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:38,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-20 06:18:38,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:38,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-20 06:18:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:38,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-20 06:18:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:38,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-20 06:18:38,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:38,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-20 06:18:38,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:38,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-20 06:18:38,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:38,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-20 06:18:38,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:38,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-20 06:18:38,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:38,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-20 06:18:38,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:38,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-20 06:18:38,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:38,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-20 06:18:38,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:38,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-20 06:18:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:38,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-20 06:18:38,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:38,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-20 06:18:38,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:38,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-20 06:18:38,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:38,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-20 06:18:38,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:38,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-20 06:18:38,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:38,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-11-20 06:18:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:38,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-11-20 06:18:38,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:38,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-11-20 06:18:38,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:38,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-11-20 06:18:38,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:38,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1516 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1516 trivial. 0 not checked. [2021-11-20 06:18:38,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:18:38,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396614174] [2021-11-20 06:18:38,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396614174] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:18:38,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:18:38,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:18:38,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115508582] [2021-11-20 06:18:38,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:18:38,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:18:38,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:18:38,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:18:38,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:18:38,977 INFO L87 Difference]: Start difference. First operand has 2739 states, 1884 states have (on average 1.3540339702760085) internal successors, (2551), 1986 states have internal predecessors, (2551), 697 states have call successors, (697), 157 states have call predecessors, (697), 156 states have return successors, (688), 672 states have call predecessors, (688), 688 states have call successors, (688) Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-20 06:18:48,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:18:48,298 INFO L93 Difference]: Finished difference Result 8005 states and 11723 transitions. [2021-11-20 06:18:48,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:18:48,301 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 214 [2021-11-20 06:18:48,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:18:48,392 INFO L225 Difference]: With dead ends: 8005 [2021-11-20 06:18:48,392 INFO L226 Difference]: Without dead ends: 5218 [2021-11-20 06:18:48,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:18:48,432 INFO L933 BasicCegarLoop]: 4141 mSDtfsCounter, 4495 mSDsluCounter, 4458 mSDsCounter, 0 mSdLazyCounter, 2601 mSolverCounterSat, 1780 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5017 SdHoareTripleChecker+Valid, 8599 SdHoareTripleChecker+Invalid, 4381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1780 IncrementalHoareTripleChecker+Valid, 2601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:18:48,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5017 Valid, 8599 Invalid, 4381 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1780 Valid, 2601 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2021-11-20 06:18:48,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5218 states. [2021-11-20 06:18:48,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5218 to 4981. [2021-11-20 06:18:48,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4981 states, 3434 states have (on average 1.3444962143273151) internal successors, (4617), 3611 states have internal predecessors, (4617), 1238 states have call successors, (1238), 309 states have call predecessors, (1238), 308 states have return successors, (1237), 1206 states have call predecessors, (1237), 1237 states have call successors, (1237) [2021-11-20 06:18:49,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4981 states to 4981 states and 7092 transitions. [2021-11-20 06:18:49,053 INFO L78 Accepts]: Start accepts. Automaton has 4981 states and 7092 transitions. Word has length 214 [2021-11-20 06:18:49,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:18:49,058 INFO L470 AbstractCegarLoop]: Abstraction has 4981 states and 7092 transitions. [2021-11-20 06:18:49,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-20 06:18:49,058 INFO L276 IsEmpty]: Start isEmpty. Operand 4981 states and 7092 transitions. [2021-11-20 06:18:49,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-20 06:18:49,077 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:18:49,078 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 28, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:18:49,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 06:18:49,078 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:18:49,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:18:49,079 INFO L85 PathProgramCache]: Analyzing trace with hash 2586623, now seen corresponding path program 1 times [2021-11-20 06:18:49,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:18:49,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643281546] [2021-11-20 06:18:49,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:18:49,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:18:49,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:49,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:18:49,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:49,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 06:18:49,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:49,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-20 06:18:49,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:49,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 06:18:49,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:49,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-20 06:18:49,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:49,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 06:18:49,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:49,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-20 06:18:49,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:49,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-20 06:18:49,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:49,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 06:18:49,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:49,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-20 06:18:49,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:49,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-20 06:18:49,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:49,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-20 06:18:49,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:49,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-20 06:18:49,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:49,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-20 06:18:49,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:49,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-20 06:18:49,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:49,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-20 06:18:49,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:49,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-20 06:18:49,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:49,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-20 06:18:49,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:49,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-20 06:18:49,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:49,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-20 06:18:49,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:49,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-20 06:18:49,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:49,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-20 06:18:49,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:49,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-20 06:18:49,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:49,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-20 06:18:49,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:49,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-20 06:18:49,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:49,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-20 06:18:49,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:49,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-20 06:18:49,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:49,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-11-20 06:18:49,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:49,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-11-20 06:18:49,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:49,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-11-20 06:18:49,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:49,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-11-20 06:18:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:49,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1516 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1516 trivial. 0 not checked. [2021-11-20 06:18:49,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:18:49,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643281546] [2021-11-20 06:18:49,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643281546] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:18:49,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:18:49,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:18:49,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341472181] [2021-11-20 06:18:49,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:18:49,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:18:49,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:18:49,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:18:49,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:18:49,883 INFO L87 Difference]: Start difference. First operand 4981 states and 7092 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-20 06:18:59,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:18:59,701 INFO L93 Difference]: Finished difference Result 15018 states and 21515 transitions. [2021-11-20 06:18:59,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:18:59,702 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 213 [2021-11-20 06:18:59,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:18:59,825 INFO L225 Difference]: With dead ends: 15018 [2021-11-20 06:18:59,825 INFO L226 Difference]: Without dead ends: 10096 [2021-11-20 06:18:59,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:18:59,870 INFO L933 BasicCegarLoop]: 4540 mSDtfsCounter, 4776 mSDsluCounter, 4641 mSDsCounter, 0 mSdLazyCounter, 2694 mSolverCounterSat, 1721 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5357 SdHoareTripleChecker+Valid, 9181 SdHoareTripleChecker+Invalid, 4415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1721 IncrementalHoareTripleChecker+Valid, 2694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:18:59,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5357 Valid, 9181 Invalid, 4415 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1721 Valid, 2694 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2021-11-20 06:18:59,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10096 states. [2021-11-20 06:19:00,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10096 to 9627. [2021-11-20 06:19:00,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9627 states, 6657 states have (on average 1.3406940063091484) internal successors, (8925), 6996 states have internal predecessors, (8925), 2357 states have call successors, (2357), 613 states have call predecessors, (2357), 612 states have return successors, (2356), 2301 states have call predecessors, (2356), 2356 states have call successors, (2356) [2021-11-20 06:19:00,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9627 states to 9627 states and 13638 transitions. [2021-11-20 06:19:00,826 INFO L78 Accepts]: Start accepts. Automaton has 9627 states and 13638 transitions. Word has length 213 [2021-11-20 06:19:00,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:19:00,828 INFO L470 AbstractCegarLoop]: Abstraction has 9627 states and 13638 transitions. [2021-11-20 06:19:00,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-20 06:19:00,829 INFO L276 IsEmpty]: Start isEmpty. Operand 9627 states and 13638 transitions. [2021-11-20 06:19:00,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-11-20 06:19:00,839 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:19:00,840 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 28, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:19:00,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 06:19:00,840 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:19:00,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:19:00,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1347570925, now seen corresponding path program 1 times [2021-11-20 06:19:00,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:19:00,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964407879] [2021-11-20 06:19:00,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:19:00,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:19:00,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:01,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:19:01,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:01,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 06:19:01,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:01,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-20 06:19:01,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:01,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 06:19:01,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:01,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-20 06:19:01,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:01,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 06:19:01,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:01,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-20 06:19:01,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:01,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-20 06:19:01,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:01,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 06:19:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:01,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-20 06:19:01,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:01,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-20 06:19:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:01,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-20 06:19:01,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:01,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-20 06:19:01,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:01,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-20 06:19:01,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:01,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-20 06:19:01,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:01,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-20 06:19:01,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:01,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-20 06:19:01,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:01,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-20 06:19:01,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:01,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-20 06:19:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:01,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-20 06:19:01,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:01,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-20 06:19:01,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:01,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-20 06:19:01,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:01,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-20 06:19:01,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:01,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-20 06:19:01,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:01,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-20 06:19:01,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:01,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-20 06:19:01,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:01,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-20 06:19:01,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:01,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-11-20 06:19:01,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:01,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-11-20 06:19:01,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:01,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-11-20 06:19:01,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:01,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-11-20 06:19:01,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:01,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1516 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1516 trivial. 0 not checked. [2021-11-20 06:19:01,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:19:01,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964407879] [2021-11-20 06:19:01,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964407879] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:19:01,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:19:01,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:19:01,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918164514] [2021-11-20 06:19:01,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:19:01,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:19:01,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:19:01,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:19:01,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:19:01,655 INFO L87 Difference]: Start difference. First operand 9627 states and 13638 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-20 06:19:10,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:19:10,876 INFO L93 Difference]: Finished difference Result 27017 states and 38426 transitions. [2021-11-20 06:19:10,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:19:10,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 220 [2021-11-20 06:19:10,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:19:11,044 INFO L225 Difference]: With dead ends: 27017 [2021-11-20 06:19:11,045 INFO L226 Difference]: Without dead ends: 17449 [2021-11-20 06:19:11,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:19:11,111 INFO L933 BasicCegarLoop]: 6209 mSDtfsCounter, 4091 mSDsluCounter, 5134 mSDsCounter, 0 mSdLazyCounter, 3037 mSolverCounterSat, 1382 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4670 SdHoareTripleChecker+Valid, 11343 SdHoareTripleChecker+Invalid, 4419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1382 IncrementalHoareTripleChecker+Valid, 3037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:19:11,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4670 Valid, 11343 Invalid, 4419 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1382 Valid, 3037 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2021-11-20 06:19:11,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17449 states. [2021-11-20 06:19:11,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17449 to 16622. [2021-11-20 06:19:12,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16622 states, 11543 states have (on average 1.3377804730139478) internal successors, (15442), 12127 states have internal predecessors, (15442), 3985 states have call successors, (3985), 1094 states have call predecessors, (3985), 1093 states have return successors, (3984), 3889 states have call predecessors, (3984), 3984 states have call successors, (3984) [2021-11-20 06:19:12,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16622 states to 16622 states and 23411 transitions. [2021-11-20 06:19:12,364 INFO L78 Accepts]: Start accepts. Automaton has 16622 states and 23411 transitions. Word has length 220 [2021-11-20 06:19:12,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:19:12,365 INFO L470 AbstractCegarLoop]: Abstraction has 16622 states and 23411 transitions. [2021-11-20 06:19:12,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-20 06:19:12,366 INFO L276 IsEmpty]: Start isEmpty. Operand 16622 states and 23411 transitions. [2021-11-20 06:19:12,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2021-11-20 06:19:12,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:19:12,401 INFO L514 BasicCegarLoop]: trace histogram [50, 50, 50, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:19:12,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 06:19:12,402 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:19:12,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:19:12,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1196821462, now seen corresponding path program 1 times [2021-11-20 06:19:12,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:19:12,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957405970] [2021-11-20 06:19:12,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:19:12,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:19:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:12,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:19:12,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:12,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 06:19:12,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:12,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-20 06:19:12,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:12,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 06:19:13,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-20 06:19:13,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 06:19:13,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-20 06:19:13,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-20 06:19:13,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 06:19:13,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-20 06:19:13,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-20 06:19:13,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-20 06:19:13,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-20 06:19:13,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-20 06:19:13,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-20 06:19:13,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-20 06:19:13,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-20 06:19:13,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-20 06:19:13,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-20 06:19:13,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-20 06:19:13,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-20 06:19:13,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-20 06:19:13,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-20 06:19:13,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-20 06:19:13,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-20 06:19:13,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-20 06:19:13,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-20 06:19:13,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-11-20 06:19:13,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-11-20 06:19:13,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-11-20 06:19:13,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-11-20 06:19:13,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-11-20 06:19:13,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-11-20 06:19:13,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-11-20 06:19:13,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2021-11-20 06:19:13,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-11-20 06:19:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-11-20 06:19:13,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2021-11-20 06:19:13,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2021-11-20 06:19:13,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-11-20 06:19:13,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2021-11-20 06:19:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-11-20 06:19:13,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2021-11-20 06:19:13,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2021-11-20 06:19:13,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2021-11-20 06:19:13,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-11-20 06:19:13,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2021-11-20 06:19:13,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2021-11-20 06:19:13,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2021-11-20 06:19:13,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-11-20 06:19:13,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2021-11-20 06:19:13,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2021-11-20 06:19:13,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2021-11-20 06:19:13,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:13,854 INFO L134 CoverageAnalysis]: Checked inductivity of 4908 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4908 trivial. 0 not checked. [2021-11-20 06:19:13,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:19:13,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957405970] [2021-11-20 06:19:13,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957405970] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:19:13,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:19:13,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:19:13,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416684386] [2021-11-20 06:19:13,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:19:13,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:19:13,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:19:13,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:19:13,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:19:13,858 INFO L87 Difference]: Start difference. First operand 16622 states and 23411 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (57), 4 states have call predecessors, (57), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) [2021-11-20 06:19:21,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:19:21,464 INFO L93 Difference]: Finished difference Result 29009 states and 41217 transitions. [2021-11-20 06:19:21,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:19:21,464 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (57), 4 states have call predecessors, (57), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) Word has length 370 [2021-11-20 06:19:21,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:19:21,697 INFO L225 Difference]: With dead ends: 29009 [2021-11-20 06:19:21,698 INFO L226 Difference]: Without dead ends: 29006 [2021-11-20 06:19:21,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:19:21,717 INFO L933 BasicCegarLoop]: 4311 mSDtfsCounter, 3963 mSDsluCounter, 4064 mSDsCounter, 0 mSdLazyCounter, 2385 mSolverCounterSat, 1485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4316 SdHoareTripleChecker+Valid, 8375 SdHoareTripleChecker+Invalid, 3870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1485 IncrementalHoareTripleChecker+Valid, 2385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-11-20 06:19:21,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4316 Valid, 8375 Invalid, 3870 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1485 Valid, 2385 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2021-11-20 06:19:21,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29006 states. [2021-11-20 06:19:23,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29006 to 27409. [2021-11-20 06:19:23,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27409 states, 19383 states have (on average 1.343600061909921) internal successors, (26043), 20255 states have internal predecessors, (26043), 6038 states have call successors, (6038), 1964 states have call predecessors, (6038), 1987 states have return successors, (6345), 5863 states have call predecessors, (6345), 6037 states have call successors, (6345) [2021-11-20 06:19:23,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27409 states to 27409 states and 38426 transitions. [2021-11-20 06:19:23,579 INFO L78 Accepts]: Start accepts. Automaton has 27409 states and 38426 transitions. Word has length 370 [2021-11-20 06:19:23,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:19:23,581 INFO L470 AbstractCegarLoop]: Abstraction has 27409 states and 38426 transitions. [2021-11-20 06:19:23,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (57), 4 states have call predecessors, (57), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) [2021-11-20 06:19:23,581 INFO L276 IsEmpty]: Start isEmpty. Operand 27409 states and 38426 transitions. [2021-11-20 06:19:23,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2021-11-20 06:19:23,685 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:19:23,686 INFO L514 BasicCegarLoop]: trace histogram [50, 50, 50, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:19:23,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 06:19:23,687 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:19:23,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:19:23,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1958315436, now seen corresponding path program 1 times [2021-11-20 06:19:23,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:19:23,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8925178] [2021-11-20 06:19:23,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:19:23,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:19:23,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:19:24,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 06:19:24,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-20 06:19:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 06:19:24,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-20 06:19:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 06:19:24,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-20 06:19:24,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-20 06:19:24,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 06:19:24,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-20 06:19:24,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-20 06:19:24,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-20 06:19:24,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-20 06:19:24,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-20 06:19:24,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-20 06:19:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-20 06:19:24,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-20 06:19:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-20 06:19:24,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-20 06:19:24,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-20 06:19:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-20 06:19:24,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-20 06:19:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-20 06:19:24,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-20 06:19:24,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-20 06:19:24,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-20 06:19:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-20 06:19:24,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-11-20 06:19:24,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-11-20 06:19:24,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-11-20 06:19:24,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-11-20 06:19:24,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-11-20 06:19:24,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-11-20 06:19:24,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-11-20 06:19:24,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2021-11-20 06:19:24,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-11-20 06:19:24,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-11-20 06:19:24,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2021-11-20 06:19:24,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2021-11-20 06:19:24,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-11-20 06:19:24,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2021-11-20 06:19:24,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-11-20 06:19:24,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2021-11-20 06:19:24,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2021-11-20 06:19:24,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2021-11-20 06:19:24,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-11-20 06:19:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2021-11-20 06:19:24,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2021-11-20 06:19:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2021-11-20 06:19:24,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-11-20 06:19:24,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2021-11-20 06:19:24,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:19:24,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-11-20 06:19:24,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2021-11-20 06:19:24,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-11-20 06:19:24,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:24,794 INFO L134 CoverageAnalysis]: Checked inductivity of 4915 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4911 trivial. 0 not checked. [2021-11-20 06:19:24,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:19:24,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8925178] [2021-11-20 06:19:24,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8925178] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:19:24,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:19:24,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:19:24,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140087166] [2021-11-20 06:19:24,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:19:24,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:19:24,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:19:24,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:19:24,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:19:24,993 INFO L87 Difference]: Start difference. First operand 27409 states and 38426 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 3 states have internal predecessors, (125), 2 states have call successors, (59), 4 states have call predecessors, (59), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2021-11-20 06:19:39,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:19:39,775 INFO L93 Difference]: Finished difference Result 86833 states and 123019 transitions. [2021-11-20 06:19:39,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 06:19:39,776 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 3 states have internal predecessors, (125), 2 states have call successors, (59), 4 states have call predecessors, (59), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 395 [2021-11-20 06:19:39,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:19:40,206 INFO L225 Difference]: With dead ends: 86833 [2021-11-20 06:19:40,207 INFO L226 Difference]: Without dead ends: 59492 [2021-11-20 06:19:40,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:19:40,339 INFO L933 BasicCegarLoop]: 6935 mSDtfsCounter, 5314 mSDsluCounter, 8214 mSDsCounter, 0 mSdLazyCounter, 4889 mSolverCounterSat, 2998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5948 SdHoareTripleChecker+Valid, 15149 SdHoareTripleChecker+Invalid, 7887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2998 IncrementalHoareTripleChecker+Valid, 4889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:19:40,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5948 Valid, 15149 Invalid, 7887 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2998 Valid, 4889 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2021-11-20 06:19:40,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59492 states. [2021-11-20 06:19:43,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59492 to 56839. [2021-11-20 06:19:43,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56839 states, 40193 states have (on average 1.3439156071952827) internal successors, (54016), 42145 states have internal predecessors, (54016), 12502 states have call successors, (12502), 3926 states have call predecessors, (12502), 4143 states have return successors, (13443), 12193 states have call predecessors, (13443), 12501 states have call successors, (13443) [2021-11-20 06:19:44,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56839 states to 56839 states and 79961 transitions. [2021-11-20 06:19:44,577 INFO L78 Accepts]: Start accepts. Automaton has 56839 states and 79961 transitions. Word has length 395 [2021-11-20 06:19:44,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:19:44,579 INFO L470 AbstractCegarLoop]: Abstraction has 56839 states and 79961 transitions. [2021-11-20 06:19:44,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 3 states have internal predecessors, (125), 2 states have call successors, (59), 4 states have call predecessors, (59), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2021-11-20 06:19:44,584 INFO L276 IsEmpty]: Start isEmpty. Operand 56839 states and 79961 transitions. [2021-11-20 06:19:44,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2021-11-20 06:19:44,726 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:19:44,727 INFO L514 BasicCegarLoop]: trace histogram [50, 50, 50, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:19:44,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 06:19:44,727 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:19:44,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:19:44,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1060922158, now seen corresponding path program 1 times [2021-11-20 06:19:44,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:19:44,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574724036] [2021-11-20 06:19:44,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:19:44,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:19:45,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:45,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:19:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:45,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 06:19:45,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:45,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-20 06:19:45,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:45,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 06:19:45,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:45,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-20 06:19:45,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:45,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 06:19:45,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:45,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-20 06:19:45,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:45,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-20 06:19:45,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:45,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 06:19:45,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:45,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-20 06:19:45,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:46,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-20 06:19:46,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:46,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-20 06:19:46,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:46,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-20 06:19:46,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:46,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-20 06:19:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:46,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-20 06:19:46,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:46,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-20 06:19:46,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:46,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-20 06:19:46,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:46,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-20 06:19:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:46,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-20 06:19:46,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:46,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-20 06:19:46,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:46,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-20 06:19:46,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:46,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-20 06:19:46,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:46,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-20 06:19:46,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:46,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-20 06:19:46,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:46,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-20 06:19:46,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:46,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-20 06:19:46,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:46,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-20 06:19:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:46,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-11-20 06:19:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:46,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-11-20 06:19:46,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:46,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-11-20 06:19:46,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:46,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-11-20 06:19:46,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:46,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-11-20 06:19:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:46,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-11-20 06:19:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:46,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-11-20 06:19:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:46,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2021-11-20 06:19:46,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:46,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-11-20 06:19:46,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:46,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-11-20 06:19:46,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:46,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2021-11-20 06:19:46,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:46,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2021-11-20 06:19:46,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:46,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-11-20 06:19:46,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:46,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2021-11-20 06:19:46,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:46,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-11-20 06:19:46,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:46,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2021-11-20 06:19:46,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:46,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2021-11-20 06:19:46,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:46,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2021-11-20 06:19:46,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:46,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-11-20 06:19:46,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:46,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2021-11-20 06:19:46,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:46,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2021-11-20 06:19:46,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:46,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2021-11-20 06:19:46,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:46,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-11-20 06:19:46,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:46,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2021-11-20 06:19:46,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:46,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:19:46,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:46,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-11-20 06:19:46,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:46,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2021-11-20 06:19:46,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:46,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-11-20 06:19:46,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:46,848 INFO L134 CoverageAnalysis]: Checked inductivity of 4915 backedges. 96 proven. 13 refuted. 0 times theorem prover too weak. 4806 trivial. 0 not checked. [2021-11-20 06:19:46,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:19:46,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574724036] [2021-11-20 06:19:46,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574724036] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:19:46,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155432841] [2021-11-20 06:19:46,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:19:46,850 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:19:46,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdaad790-8730-4281-97cb-6813ce97f235/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:19:46,853 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdaad790-8730-4281-97cb-6813ce97f235/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:19:46,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdaad790-8730-4281-97cb-6813ce97f235/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 06:19:48,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:48,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 3961 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 06:19:48,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:19:49,735 INFO L134 CoverageAnalysis]: Checked inductivity of 4915 backedges. 2473 proven. 0 refuted. 0 times theorem prover too weak. 2442 trivial. 0 not checked. [2021-11-20 06:19:49,735 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:19:49,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155432841] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:19:49,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:19:49,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 17 [2021-11-20 06:19:49,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608784758] [2021-11-20 06:19:49,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:19:49,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:19:49,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:19:49,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:19:49,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-11-20 06:19:49,741 INFO L87 Difference]: Start difference. First operand 56839 states and 79961 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (59), 2 states have call predecessors, (59), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2021-11-20 06:19:53,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:19:53,399 INFO L93 Difference]: Finished difference Result 113742 states and 159987 transitions. [2021-11-20 06:19:53,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:19:53,400 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (59), 2 states have call predecessors, (59), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 395 [2021-11-20 06:19:53,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:19:53,776 INFO L225 Difference]: With dead ends: 113742 [2021-11-20 06:19:53,776 INFO L226 Difference]: Without dead ends: 56811 [2021-11-20 06:19:53,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 500 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2021-11-20 06:19:53,988 INFO L933 BasicCegarLoop]: 3886 mSDtfsCounter, 6 mSDsluCounter, 11653 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 15539 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:19:53,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 15539 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 06:19:54,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56811 states. [2021-11-20 06:19:56,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56811 to 56699. [2021-11-20 06:19:56,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56699 states, 40053 states have (on average 1.3435198362170124) internal successors, (53812), 42005 states have internal predecessors, (53812), 12502 states have call successors, (12502), 3926 states have call predecessors, (12502), 4143 states have return successors, (13443), 12193 states have call predecessors, (13443), 12501 states have call successors, (13443) [2021-11-20 06:19:57,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56699 states to 56699 states and 79757 transitions. [2021-11-20 06:19:57,186 INFO L78 Accepts]: Start accepts. Automaton has 56699 states and 79757 transitions. Word has length 395 [2021-11-20 06:19:57,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:19:57,187 INFO L470 AbstractCegarLoop]: Abstraction has 56699 states and 79757 transitions. [2021-11-20 06:19:57,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (59), 2 states have call predecessors, (59), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2021-11-20 06:19:57,187 INFO L276 IsEmpty]: Start isEmpty. Operand 56699 states and 79757 transitions. [2021-11-20 06:19:57,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2021-11-20 06:19:57,256 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:19:57,256 INFO L514 BasicCegarLoop]: trace histogram [50, 50, 50, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:19:57,306 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdaad790-8730-4281-97cb-6813ce97f235/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-20 06:19:57,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdaad790-8730-4281-97cb-6813ce97f235/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-20 06:19:57,485 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:19:57,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:19:57,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1707498606, now seen corresponding path program 1 times [2021-11-20 06:19:57,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:19:57,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454243681] [2021-11-20 06:19:57,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:19:57,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:19:57,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:58,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:19:58,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:58,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 06:19:58,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:58,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-20 06:19:58,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:58,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 06:19:58,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:58,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-20 06:19:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:58,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 06:19:58,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:58,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-20 06:19:58,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:58,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-20 06:19:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:58,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 06:19:58,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:58,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-20 06:19:58,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:58,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-20 06:19:58,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:58,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-20 06:19:58,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:58,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-20 06:19:58,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:58,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-20 06:19:58,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:58,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-20 06:19:58,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:58,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-20 06:19:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:58,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-20 06:19:58,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:58,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-20 06:19:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:58,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-20 06:19:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:58,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-20 06:19:58,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:58,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-20 06:19:58,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:58,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-20 06:19:58,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:58,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-20 06:19:58,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:58,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-20 06:19:58,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:58,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-20 06:19:58,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:58,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-20 06:19:58,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:58,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-20 06:19:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:58,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-11-20 06:19:58,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:58,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-11-20 06:19:58,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:58,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-11-20 06:19:58,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:58,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-11-20 06:19:58,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:58,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-11-20 06:19:58,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:58,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-11-20 06:19:58,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:58,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-11-20 06:19:58,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:58,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2021-11-20 06:19:58,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:58,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2021-11-20 06:19:58,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:58,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-11-20 06:19:58,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:58,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-11-20 06:19:58,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:58,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2021-11-20 06:19:58,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:58,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2021-11-20 06:19:58,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:58,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2021-11-20 06:19:58,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:58,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2021-11-20 06:19:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:58,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2021-11-20 06:19:58,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:58,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-11-20 06:19:58,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:58,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2021-11-20 06:19:58,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:58,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2021-11-20 06:19:59,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:59,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-11-20 06:19:59,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:59,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2021-11-20 06:19:59,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:59,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2021-11-20 06:19:59,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:59,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2021-11-20 06:19:59,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:59,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2021-11-20 06:19:59,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:59,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:19:59,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:59,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2021-11-20 06:19:59,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:59,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2021-11-20 06:19:59,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:59,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2021-11-20 06:19:59,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:59,192 INFO L134 CoverageAnalysis]: Checked inductivity of 4915 backedges. 96 proven. 13 refuted. 0 times theorem prover too weak. 4806 trivial. 0 not checked. [2021-11-20 06:19:59,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:19:59,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454243681] [2021-11-20 06:19:59,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454243681] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:19:59,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891265137] [2021-11-20 06:19:59,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:19:59,194 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:19:59,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdaad790-8730-4281-97cb-6813ce97f235/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:19:59,197 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdaad790-8730-4281-97cb-6813ce97f235/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:19:59,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdaad790-8730-4281-97cb-6813ce97f235/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 06:20:01,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:20:01,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 3986 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-20 06:20:01,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:20:04,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 7 [2021-11-20 06:20:05,021 INFO L134 CoverageAnalysis]: Checked inductivity of 4915 backedges. 301 proven. 6 refuted. 0 times theorem prover too weak. 4608 trivial. 0 not checked. [2021-11-20 06:20:05,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:20:05,414 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-11-20 06:20:05,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 18 [2021-11-20 06:20:06,954 INFO L134 CoverageAnalysis]: Checked inductivity of 4915 backedges. 96 proven. 13 refuted. 0 times theorem prover too weak. 4806 trivial. 0 not checked. [2021-11-20 06:20:06,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891265137] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:20:06,954 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:20:06,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 12] total 30 [2021-11-20 06:20:06,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253836755] [2021-11-20 06:20:06,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:20:06,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-20 06:20:06,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:20:06,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-20 06:20:06,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=781, Unknown=0, NotChecked=0, Total=870 [2021-11-20 06:20:06,961 INFO L87 Difference]: Start difference. First operand 56699 states and 79757 transitions. Second operand has 30 states, 30 states have (on average 7.2) internal successors, (216), 23 states have internal predecessors, (216), 14 states have call successors, (169), 11 states have call predecessors, (169), 9 states have return successors, (112), 13 states have call predecessors, (112), 11 states have call successors, (112) [2021-11-20 06:21:36,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:21:36,946 INFO L93 Difference]: Finished difference Result 286676 states and 416206 transitions. [2021-11-20 06:21:36,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-20 06:21:36,947 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 7.2) internal successors, (216), 23 states have internal predecessors, (216), 14 states have call successors, (169), 11 states have call predecessors, (169), 9 states have return successors, (112), 13 states have call predecessors, (112), 11 states have call successors, (112) Word has length 397 [2021-11-20 06:21:36,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:21:38,723 INFO L225 Difference]: With dead ends: 286676 [2021-11-20 06:21:38,724 INFO L226 Difference]: Without dead ends: 230045 [2021-11-20 06:21:38,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 970 GetRequests, 900 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1254 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=742, Invalid=4370, Unknown=0, NotChecked=0, Total=5112 [2021-11-20 06:21:38,985 INFO L933 BasicCegarLoop]: 5680 mSDtfsCounter, 26971 mSDsluCounter, 53736 mSDsCounter, 0 mSdLazyCounter, 84892 mSolverCounterSat, 19235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 67.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27914 SdHoareTripleChecker+Valid, 59416 SdHoareTripleChecker+Invalid, 104127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 19235 IncrementalHoareTripleChecker+Valid, 84892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 77.9s IncrementalHoareTripleChecker+Time [2021-11-20 06:21:38,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27914 Valid, 59416 Invalid, 104127 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [19235 Valid, 84892 Invalid, 0 Unknown, 0 Unchecked, 77.9s Time] [2021-11-20 06:21:39,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230045 states. [2021-11-20 06:21:47,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230045 to 195173. [2021-11-20 06:21:47,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195173 states, 139427 states have (on average 1.3604538575742144) internal successors, (189684), 146455 states have internal predecessors, (189684), 40274 states have call successors, (40274), 14940 states have call predecessors, (40274), 15471 states have return successors, (46969), 37747 states have call predecessors, (46969), 40273 states have call successors, (46969) [2021-11-20 06:21:49,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195173 states to 195173 states and 276927 transitions. [2021-11-20 06:21:49,121 INFO L78 Accepts]: Start accepts. Automaton has 195173 states and 276927 transitions. Word has length 397 [2021-11-20 06:21:49,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:21:49,122 INFO L470 AbstractCegarLoop]: Abstraction has 195173 states and 276927 transitions. [2021-11-20 06:21:49,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 7.2) internal successors, (216), 23 states have internal predecessors, (216), 14 states have call successors, (169), 11 states have call predecessors, (169), 9 states have return successors, (112), 13 states have call predecessors, (112), 11 states have call successors, (112) [2021-11-20 06:21:49,122 INFO L276 IsEmpty]: Start isEmpty. Operand 195173 states and 276927 transitions. [2021-11-20 06:21:49,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2021-11-20 06:21:49,822 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:49,822 INFO L514 BasicCegarLoop]: trace histogram [50, 50, 50, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:21:49,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdaad790-8730-4281-97cb-6813ce97f235/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 06:21:50,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdaad790-8730-4281-97cb-6813ce97f235/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-20 06:21:50,048 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:21:50,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:50,049 INFO L85 PathProgramCache]: Analyzing trace with hash -955879295, now seen corresponding path program 1 times [2021-11-20 06:21:50,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:21:50,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113400406] [2021-11-20 06:21:50,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:50,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:21:50,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:50,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:21:50,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:50,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 06:21:50,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:50,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-20 06:21:50,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:50,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 06:21:50,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:50,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-20 06:21:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:50,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 06:21:50,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:50,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-20 06:21:50,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:50,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-20 06:21:50,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:50,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 06:21:50,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:50,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-20 06:21:50,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:50,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-20 06:21:50,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:50,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-20 06:21:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:50,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-20 06:21:50,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:50,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-20 06:21:50,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:50,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-20 06:21:50,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:50,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-20 06:21:50,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:50,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-20 06:21:50,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:50,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-20 06:21:50,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:50,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-20 06:21:50,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:50,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-20 06:21:50,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:50,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-20 06:21:50,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:50,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-20 06:21:50,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:50,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-20 06:21:50,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:50,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-20 06:21:50,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:50,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-20 06:21:50,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:50,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-20 06:21:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:50,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-20 06:21:50,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:50,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-11-20 06:21:50,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:50,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-11-20 06:21:50,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:50,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-11-20 06:21:50,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:50,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-11-20 06:21:50,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:50,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-11-20 06:21:50,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:50,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-11-20 06:21:50,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:50,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-11-20 06:21:50,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:50,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2021-11-20 06:21:50,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:50,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2021-11-20 06:21:50,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:51,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-11-20 06:21:51,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:51,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-11-20 06:21:51,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:51,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2021-11-20 06:21:51,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:51,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2021-11-20 06:21:51,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:51,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2021-11-20 06:21:51,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:51,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2021-11-20 06:21:51,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:51,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2021-11-20 06:21:51,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:51,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-11-20 06:21:51,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:51,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2021-11-20 06:21:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:51,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2021-11-20 06:21:51,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:51,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-11-20 06:21:51,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:51,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2021-11-20 06:21:51,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:51,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2021-11-20 06:21:51,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:51,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2021-11-20 06:21:51,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:51,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2021-11-20 06:21:51,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:51,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:21:51,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:51,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2021-11-20 06:21:51,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:51,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2021-11-20 06:21:51,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:51,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2021-11-20 06:21:51,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:51,274 INFO L134 CoverageAnalysis]: Checked inductivity of 4919 backedges. 76 proven. 37 refuted. 0 times theorem prover too weak. 4806 trivial. 0 not checked. [2021-11-20 06:21:51,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:21:51,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113400406] [2021-11-20 06:21:51,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113400406] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:21:51,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629420564] [2021-11-20 06:21:51,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:51,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:21:51,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdaad790-8730-4281-97cb-6813ce97f235/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:21:51,276 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdaad790-8730-4281-97cb-6813ce97f235/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:21:51,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdaad790-8730-4281-97cb-6813ce97f235/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 06:21:53,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:53,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 3988 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-20 06:21:53,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:21:56,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 7 [2021-11-20 06:21:56,137 INFO L134 CoverageAnalysis]: Checked inductivity of 4919 backedges. 1781 proven. 30 refuted. 0 times theorem prover too weak. 3108 trivial. 0 not checked. [2021-11-20 06:21:56,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:21:56,351 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-11-20 06:21:56,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 18 [2021-11-20 06:21:57,588 INFO L134 CoverageAnalysis]: Checked inductivity of 4919 backedges. 76 proven. 37 refuted. 0 times theorem prover too weak. 4806 trivial. 0 not checked. [2021-11-20 06:21:57,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629420564] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:21:57,589 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:21:57,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 12] total 30 [2021-11-20 06:21:57,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889929848] [2021-11-20 06:21:57,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:21:57,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-20 06:21:57,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:21:57,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-20 06:21:57,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=781, Unknown=0, NotChecked=0, Total=870 [2021-11-20 06:21:57,594 INFO L87 Difference]: Start difference. First operand 195173 states and 276927 transitions. Second operand has 30 states, 30 states have (on average 7.766666666666667) internal successors, (233), 23 states have internal predecessors, (233), 14 states have call successors, (169), 11 states have call predecessors, (169), 9 states have return successors, (112), 13 states have call predecessors, (112), 11 states have call successors, (112)