./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y --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 a4ce0bc2df24452096decdc7e961550a8934d52ee8eab37caec2ef22f016be61 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:28:47,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:28:47,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:28:47,122 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:28:47,123 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:28:47,125 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:28:47,127 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:28:47,130 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:28:47,133 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:28:47,135 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:28:47,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:28:47,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:28:47,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:28:47,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:28:47,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:28:47,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:28:47,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:28:47,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:28:47,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:28:47,153 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:28:47,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:28:47,158 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:28:47,160 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:28:47,162 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:28:47,166 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:28:47,167 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:28:47,167 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:28:47,169 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:28:47,170 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:28:47,171 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:28:47,172 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:28:47,173 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:28:47,174 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:28:47,177 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:28:47,179 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:28:47,180 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:28:47,182 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:28:47,183 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:28:47,184 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:28:47,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:28:47,189 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:28:47,190 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-13 18:28:47,243 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:28:47,243 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:28:47,244 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:28:47,244 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:28:47,248 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:28:47,249 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:28:47,249 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:28:47,249 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:28:47,249 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:28:47,250 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:28:47,250 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:28:47,250 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:28:47,250 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:28:47,250 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:28:47,250 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:28:47,251 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:28:47,251 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:28:47,251 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:28:47,251 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:28:47,251 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:28:47,251 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:28:47,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:28:47,252 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:28:47,252 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:28:47,252 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:28:47,252 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:28:47,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:28:47,252 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:28:47,252 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:28:47,253 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:28:47,253 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:28:47,253 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_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4ce0bc2df24452096decdc7e961550a8934d52ee8eab37caec2ef22f016be61 [2021-11-13 18:28:47,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:28:47,605 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:28:47,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:28:47,610 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:28:47,611 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:28:47,613 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i [2021-11-13 18:28:47,686 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/data/437211e84/127cf9714ef84ad5a1f2ce1f96de1f85/FLAGde9b62939 [2021-11-13 18:28:48,791 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:28:48,792 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i [2021-11-13 18:28:48,875 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/data/437211e84/127cf9714ef84ad5a1f2ce1f96de1f85/FLAGde9b62939 [2021-11-13 18:28:49,056 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/data/437211e84/127cf9714ef84ad5a1f2ce1f96de1f85 [2021-11-13 18:28:49,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:28:49,062 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:28:49,064 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:28:49,064 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:28:49,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:28:49,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:28:49" (1/1) ... [2021-11-13 18:28:49,076 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64fc2908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:49, skipping insertion in model container [2021-11-13 18:28:49,076 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:28:49" (1/1) ... [2021-11-13 18:28:49,084 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:28:49,290 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:28:52,911 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[309910,309923] [2021-11-13 18:28:52,915 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[310055,310068] [2021-11-13 18:28:52,916 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[310201,310214] [2021-11-13 18:28:52,918 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[310366,310379] [2021-11-13 18:28:52,918 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[310524,310537] [2021-11-13 18:28:52,920 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[310682,310695] [2021-11-13 18:28:52,921 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[310840,310853] [2021-11-13 18:28:52,922 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[311000,311013] [2021-11-13 18:28:52,923 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[311159,311172] [2021-11-13 18:28:52,924 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[311298,311311] [2021-11-13 18:28:52,926 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[311440,311453] [2021-11-13 18:28:52,927 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[311589,311602] [2021-11-13 18:28:52,928 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[311728,311741] [2021-11-13 18:28:52,930 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[311883,311896] [2021-11-13 18:28:52,933 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[312043,312056] [2021-11-13 18:28:52,934 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[312194,312207] [2021-11-13 18:28:52,943 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[312345,312358] [2021-11-13 18:28:52,944 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[312497,312510] [2021-11-13 18:28:52,946 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[312646,312659] [2021-11-13 18:28:52,947 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[312794,312807] [2021-11-13 18:28:52,947 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[312951,312964] [2021-11-13 18:28:52,948 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[313100,313113] [2021-11-13 18:28:52,949 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[313256,313269] [2021-11-13 18:28:52,950 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[313409,313422] [2021-11-13 18:28:52,954 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[313555,313568] [2021-11-13 18:28:52,955 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[313698,313711] [2021-11-13 18:28:52,956 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[313850,313863] [2021-11-13 18:28:52,957 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[313996,314009] [2021-11-13 18:28:52,957 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[314141,314154] [2021-11-13 18:28:52,960 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[314295,314308] [2021-11-13 18:28:52,962 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[314446,314459] [2021-11-13 18:28:52,963 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[314601,314614] [2021-11-13 18:28:52,963 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[314753,314766] [2021-11-13 18:28:52,964 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[314908,314921] [2021-11-13 18:28:52,966 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[315072,315085] [2021-11-13 18:28:52,967 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[315228,315241] [2021-11-13 18:28:52,967 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[315392,315405] [2021-11-13 18:28:52,968 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[315534,315547] [2021-11-13 18:28:52,969 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[315692,315705] [2021-11-13 18:28:52,970 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[315859,315872] [2021-11-13 18:28:52,971 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[316018,316031] [2021-11-13 18:28:52,971 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[316177,316190] [2021-11-13 18:28:52,972 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[316326,316339] [2021-11-13 18:28:52,973 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[316473,316486] [2021-11-13 18:28:52,973 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[316612,316625] [2021-11-13 18:28:52,974 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[316775,316788] [2021-11-13 18:28:52,975 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[316941,316954] [2021-11-13 18:28:52,977 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[317105,317118] [2021-11-13 18:28:52,978 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[317270,317283] [2021-11-13 18:28:52,979 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[317435,317448] [2021-11-13 18:28:52,980 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[317601,317614] [2021-11-13 18:28:52,980 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[317766,317779] [2021-11-13 18:28:52,981 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[317933,317946] [2021-11-13 18:28:52,982 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[318093,318106] [2021-11-13 18:28:52,983 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[318255,318268] [2021-11-13 18:28:52,984 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[318414,318427] [2021-11-13 18:28:52,985 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[318560,318573] [2021-11-13 18:28:52,986 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[318703,318716] [2021-11-13 18:28:52,986 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[318847,318860] [2021-11-13 18:28:52,987 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[318990,319003] [2021-11-13 18:28:52,988 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[319134,319147] [2021-11-13 18:28:52,989 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[319275,319288] [2021-11-13 18:28:52,990 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[319413,319426] [2021-11-13 18:28:52,990 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[319571,319584] [2021-11-13 18:28:52,991 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[319730,319743] [2021-11-13 18:28:52,992 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[319886,319899] [2021-11-13 18:28:52,993 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[320035,320048] [2021-11-13 18:28:52,994 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[320187,320200] [2021-11-13 18:28:52,994 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[320338,320351] [2021-11-13 18:28:52,995 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[320487,320500] [2021-11-13 18:28:52,996 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[320639,320652] [2021-11-13 18:28:52,996 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[320787,320800] [2021-11-13 18:28:52,997 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[320940,320953] [2021-11-13 18:28:52,998 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[321091,321104] [2021-11-13 18:28:52,999 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[321241,321254] [2021-11-13 18:28:53,000 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[321388,321401] [2021-11-13 18:28:53,000 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[321539,321552] [2021-11-13 18:28:53,001 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[321690,321703] [2021-11-13 18:28:53,002 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[321838,321851] [2021-11-13 18:28:53,003 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[322004,322017] [2021-11-13 18:28:53,003 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[322173,322186] [2021-11-13 18:28:53,005 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[322340,322353] [2021-11-13 18:28:53,005 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[322508,322521] [2021-11-13 18:28:53,006 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[322658,322671] [2021-11-13 18:28:53,007 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[322805,322818] [2021-11-13 18:28:53,008 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[322966,322979] [2021-11-13 18:28:53,009 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[323136,323149] [2021-11-13 18:28:53,010 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[323298,323311] [2021-11-13 18:28:53,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:28:53,071 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:28:53,619 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[309910,309923] [2021-11-13 18:28:53,621 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[310055,310068] [2021-11-13 18:28:53,621 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[310201,310214] [2021-11-13 18:28:53,622 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[310366,310379] [2021-11-13 18:28:53,623 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[310524,310537] [2021-11-13 18:28:53,629 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[310682,310695] [2021-11-13 18:28:53,630 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[310840,310853] [2021-11-13 18:28:53,632 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[311000,311013] [2021-11-13 18:28:53,632 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[311159,311172] [2021-11-13 18:28:53,633 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[311298,311311] [2021-11-13 18:28:53,633 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[311440,311453] [2021-11-13 18:28:53,634 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[311589,311602] [2021-11-13 18:28:53,635 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[311728,311741] [2021-11-13 18:28:53,635 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[311883,311896] [2021-11-13 18:28:53,636 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[312043,312056] [2021-11-13 18:28:53,636 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[312194,312207] [2021-11-13 18:28:53,637 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[312345,312358] [2021-11-13 18:28:53,639 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[312497,312510] [2021-11-13 18:28:53,639 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[312646,312659] [2021-11-13 18:28:53,640 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[312794,312807] [2021-11-13 18:28:53,641 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[312951,312964] [2021-11-13 18:28:53,641 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[313100,313113] [2021-11-13 18:28:53,642 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[313256,313269] [2021-11-13 18:28:53,643 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[313409,313422] [2021-11-13 18:28:53,644 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[313555,313568] [2021-11-13 18:28:53,644 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[313698,313711] [2021-11-13 18:28:53,645 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[313850,313863] [2021-11-13 18:28:53,646 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[313996,314009] [2021-11-13 18:28:53,646 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[314141,314154] [2021-11-13 18:28:53,647 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[314295,314308] [2021-11-13 18:28:53,647 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[314446,314459] [2021-11-13 18:28:53,648 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[314601,314614] [2021-11-13 18:28:53,649 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[314753,314766] [2021-11-13 18:28:53,649 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[314908,314921] [2021-11-13 18:28:53,650 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[315072,315085] [2021-11-13 18:28:53,650 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[315228,315241] [2021-11-13 18:28:53,651 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[315392,315405] [2021-11-13 18:28:53,652 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[315534,315547] [2021-11-13 18:28:53,652 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[315692,315705] [2021-11-13 18:28:53,653 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[315859,315872] [2021-11-13 18:28:53,653 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[316018,316031] [2021-11-13 18:28:53,654 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[316177,316190] [2021-11-13 18:28:53,655 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[316326,316339] [2021-11-13 18:28:53,655 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[316473,316486] [2021-11-13 18:28:53,656 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[316612,316625] [2021-11-13 18:28:53,656 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[316775,316788] [2021-11-13 18:28:53,657 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[316941,316954] [2021-11-13 18:28:53,657 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[317105,317118] [2021-11-13 18:28:53,658 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[317270,317283] [2021-11-13 18:28:53,659 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[317435,317448] [2021-11-13 18:28:53,659 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[317601,317614] [2021-11-13 18:28:53,660 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[317766,317779] [2021-11-13 18:28:53,661 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[317933,317946] [2021-11-13 18:28:53,661 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[318093,318106] [2021-11-13 18:28:53,662 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[318255,318268] [2021-11-13 18:28:53,662 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[318414,318427] [2021-11-13 18:28:53,663 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[318560,318573] [2021-11-13 18:28:53,664 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[318703,318716] [2021-11-13 18:28:53,664 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[318847,318860] [2021-11-13 18:28:53,665 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[318990,319003] [2021-11-13 18:28:53,665 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[319134,319147] [2021-11-13 18:28:53,666 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[319275,319288] [2021-11-13 18:28:53,667 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[319413,319426] [2021-11-13 18:28:53,667 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[319571,319584] [2021-11-13 18:28:53,668 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[319730,319743] [2021-11-13 18:28:53,669 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[319886,319899] [2021-11-13 18:28:53,669 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[320035,320048] [2021-11-13 18:28:53,670 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[320187,320200] [2021-11-13 18:28:53,671 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[320338,320351] [2021-11-13 18:28:53,671 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[320487,320500] [2021-11-13 18:28:53,672 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[320639,320652] [2021-11-13 18:28:53,672 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[320787,320800] [2021-11-13 18:28:53,673 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[320940,320953] [2021-11-13 18:28:53,674 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[321091,321104] [2021-11-13 18:28:53,674 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[321241,321254] [2021-11-13 18:28:53,675 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[321388,321401] [2021-11-13 18:28:53,675 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[321539,321552] [2021-11-13 18:28:53,676 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[321690,321703] [2021-11-13 18:28:53,677 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[321838,321851] [2021-11-13 18:28:53,677 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[322004,322017] [2021-11-13 18:28:53,678 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[322173,322186] [2021-11-13 18:28:53,678 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[322340,322353] [2021-11-13 18:28:53,679 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[322508,322521] [2021-11-13 18:28:53,679 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[322658,322671] [2021-11-13 18:28:53,680 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[322805,322818] [2021-11-13 18:28:53,680 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[322966,322979] [2021-11-13 18:28:53,681 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[323136,323149] [2021-11-13 18:28:53,682 WARN L228 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_19b919a3-b863-4fa5-8b98-737289325c28/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i[323298,323311] [2021-11-13 18:28:53,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:28:53,923 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:28:53,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:53 WrapperNode [2021-11-13 18:28:53,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:28:53,925 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:28:53,926 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:28:53,932 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:28:53,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:53" (1/1) ... [2021-11-13 18:28:54,085 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:53" (1/1) ... [2021-11-13 18:28:54,267 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:28:54,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:28:54,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:28:54,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:28:54,287 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:53" (1/1) ... [2021-11-13 18:28:54,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:53" (1/1) ... [2021-11-13 18:28:54,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:53" (1/1) ... [2021-11-13 18:28:54,310 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:53" (1/1) ... [2021-11-13 18:28:54,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:53" (1/1) ... [2021-11-13 18:28:54,497 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:53" (1/1) ... [2021-11-13 18:28:54,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:53" (1/1) ... [2021-11-13 18:28:54,562 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:28:54,564 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:28:54,564 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:28:54,564 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:28:54,565 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:53" (1/1) ... [2021-11-13 18:28:54,574 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:28:54,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:28:54,602 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:28:54,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:28:54,675 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_coherent_check_final_state [2021-11-13 18:28:54,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_coherent_check_final_state [2021-11-13 18:28:54,676 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-13 18:28:54,676 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-13 18:28:54,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-13 18:28:54,676 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-13 18:28:54,677 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 18:28:54,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 18:28:54,677 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_arch_io_io_mem_remap [2021-11-13 18:28:54,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_arch_io_io_mem_remap [2021-11-13 18:28:54,677 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_mmc_sdio_func_check_final_state [2021-11-13 18:28:54,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_mmc_sdio_func_check_final_state [2021-11-13 18:28:54,678 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2021-11-13 18:28:54,678 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2021-11-13 18:28:54,678 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_arch_io_check_final_state [2021-11-13 18:28:54,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_arch_io_check_final_state [2021-11-13 18:28:54,678 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_module_check_final_state [2021-11-13 18:28:54,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_module_check_final_state [2021-11-13 18:28:54,679 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-13 18:28:54,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-13 18:28:54,679 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-13 18:28:54,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-13 18:28:54,679 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-13 18:28:54,680 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-13 18:28:54,680 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-13 18:28:54,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-13 18:28:54,680 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_queue_check_final_state [2021-11-13 18:28:54,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_queue_check_final_state [2021-11-13 18:28:54,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:28:54,681 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-13 18:28:54,681 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-13 18:28:54,681 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-13 18:28:54,681 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-13 18:28:54,681 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_request_check_final_state [2021-11-13 18:28:54,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_request_check_final_state [2021-11-13 18:28:54,682 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_mtx_of_vme_dma_resource [2021-11-13 18:28:54,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_mtx_of_vme_dma_resource [2021-11-13 18:28:54,682 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-11-13 18:28:54,682 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-11-13 18:28:54,682 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-13 18:28:54,683 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-13 18:28:54,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-13 18:28:54,683 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_in_interrupt_context [2021-11-13 18:28:54,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_in_interrupt_context [2021-11-13 18:28:54,683 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-13 18:28:54,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-13 18:28:54,684 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_bh_check_final_state [2021-11-13 18:28:54,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_bh_check_final_state [2021-11-13 18:28:54,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 18:28:54,684 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_genhd_check_final_state [2021-11-13 18:28:54,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_genhd_check_final_state [2021-11-13 18:28:54,684 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2021-11-13 18:28:54,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2021-11-13 18:28:54,685 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_register_reset_error_counter [2021-11-13 18:28:54,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_register_reset_error_counter [2021-11-13 18:28:54,685 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-13 18:28:54,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-13 18:28:54,685 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-13 18:28:54,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-13 18:28:54,686 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait_event [2021-11-13 18:28:54,686 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait_event [2021-11-13 18:28:54,687 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-13 18:28:54,687 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-13 18:28:54,687 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-13 18:28:54,687 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-13 18:28:54,687 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_lib_idr_check_final_state [2021-11-13 18:28:54,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_lib_idr_check_final_state [2021-11-13 18:28:54,688 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-13 18:28:54,688 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-13 18:28:54,688 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_srcu_check_final_state [2021-11-13 18:28:54,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_srcu_check_final_state [2021-11-13 18:28:54,688 INFO L130 BoogieDeclarations]: Found specification of procedure virt_to_phys [2021-11-13 18:28:54,688 INFO L138 BoogieDeclarations]: Found implementation of procedure virt_to_phys [2021-11-13 18:28:54,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 18:28:54,691 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-11-13 18:28:54,692 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-11-13 18:28:54,692 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-13 18:28:54,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-13 18:28:54,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 18:28:54,693 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 18:28:54,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 18:28:54,693 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-13 18:28:54,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-13 18:28:54,700 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_lock_mtx_of_vme_dma_resource [2021-11-13 18:28:54,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_lock_mtx_of_vme_dma_resource [2021-11-13 18:28:54,701 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_register_reset_error_counter [2021-11-13 18:28:54,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_register_reset_error_counter [2021-11-13 18:28:54,701 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-13 18:28:54,701 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-13 18:28:54,702 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-11-13 18:28:54,702 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-11-13 18:28:54,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:28:54,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:28:54,702 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 18:28:54,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 18:28:54,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 18:28:54,703 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 18:28:54,703 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_arch_io_io_mem_unmap [2021-11-13 18:28:54,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_arch_io_io_mem_unmap [2021-11-13 18:28:54,703 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_sock_check_final_state [2021-11-13 18:28:54,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_sock_check_final_state [2021-11-13 18:28:54,703 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_gadget_check_final_state [2021-11-13 18:28:54,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_gadget_check_final_state [2021-11-13 18:28:54,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:28:54,704 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-13 18:28:54,704 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-13 18:28:54,704 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_fs_sysfs_check_final_state [2021-11-13 18:28:54,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_fs_sysfs_check_final_state [2021-11-13 18:28:54,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 18:28:54,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 18:28:54,705 INFO L130 BoogieDeclarations]: Found specification of procedure ca91cx42_slot_get [2021-11-13 18:28:54,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ca91cx42_slot_get [2021-11-13 18:28:54,705 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-13 18:28:54,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-13 18:28:54,706 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-13 18:28:54,706 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-13 18:28:54,706 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-13 18:28:54,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-13 18:28:54,706 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_rtnetlink_check_final_state [2021-11-13 18:28:54,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_rtnetlink_check_final_state [2021-11-13 18:28:54,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-13 18:28:54,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-13 18:28:54,708 INFO L130 BoogieDeclarations]: Found specification of procedure ca91cx42_irq_exit [2021-11-13 18:28:54,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ca91cx42_irq_exit [2021-11-13 18:28:54,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-13 18:28:54,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-13 18:28:54,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_check_final_state [2021-11-13 18:28:54,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_check_final_state [2021-11-13 18:28:54,709 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-13 18:28:54,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-13 18:28:54,709 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_urb_check_final_state [2021-11-13 18:28:54,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_urb_check_final_state [2021-11-13 18:28:54,709 INFO L130 BoogieDeclarations]: Found specification of procedure ca91cx42_crcsr_exit [2021-11-13 18:28:54,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ca91cx42_crcsr_exit [2021-11-13 18:28:54,710 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_rwlock_check_final_state [2021-11-13 18:28:54,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_rwlock_check_final_state [2021-11-13 18:28:54,710 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-13 18:28:54,710 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-13 18:28:54,710 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-13 18:28:54,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-13 18:28:54,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 18:28:54,711 INFO L130 BoogieDeclarations]: Found specification of procedure ca91cx42_remove [2021-11-13 18:28:54,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ca91cx42_remove [2021-11-13 18:28:54,711 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_fs_char_dev_check_final_state [2021-11-13 18:28:54,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_fs_char_dev_check_final_state [2021-11-13 18:28:54,712 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 18:28:54,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 18:28:54,712 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_drivers_base_class_check_final_state [2021-11-13 18:28:54,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_drivers_base_class_check_final_state [2021-11-13 18:28:54,712 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-13 18:28:54,712 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-13 18:28:54,713 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-13 18:28:54,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-13 18:28:54,713 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_sched_check_final_state [2021-11-13 18:28:54,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_sched_check_final_state [2021-11-13 18:28:54,713 INFO L130 BoogieDeclarations]: Found specification of procedure ca91cx42_dma_busy [2021-11-13 18:28:54,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ca91cx42_dma_busy [2021-11-13 18:28:54,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:28:55,660 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 18:29:03,131 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:29:03,131 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-13 18:29:03,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:29:03 BoogieIcfgContainer [2021-11-13 18:29:03,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:29:03,139 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:29:03,139 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:29:03,143 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:29:03,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:28:49" (1/3) ... [2021-11-13 18:29:03,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@481eb472 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:29:03, skipping insertion in model container [2021-11-13 18:29:03,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:53" (2/3) ... [2021-11-13 18:29:03,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@481eb472 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:29:03, skipping insertion in model container [2021-11-13 18:29:03,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:29:03" (3/3) ... [2021-11-13 18:29:03,146 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.0-rc1---drivers--vme--bridges--vme_ca91cx42.ko.cil.i [2021-11-13 18:29:03,153 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:29:03,153 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2021-11-13 18:29:03,238 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:29:03,255 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 [2021-11-13 18:29:03,258 INFO L340 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2021-11-13 18:29:03,324 INFO L276 IsEmpty]: Start isEmpty. Operand has 959 states, 608 states have (on average 1.238486842105263) internal successors, (753), 649 states have internal predecessors, (753), 250 states have call successors, (250), 73 states have call predecessors, (250), 72 states have return successors, (247), 247 states have call predecessors, (247), 247 states have call successors, (247) [2021-11-13 18:29:03,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-13 18:29:03,334 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:29:03,335 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-13 18:29:03,335 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_linux_arch_io_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:29:03,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:29:03,341 INFO L85 PathProgramCache]: Analyzing trace with hash 628355767, now seen corresponding path program 1 times [2021-11-13 18:29:03,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:29:03,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785342367] [2021-11-13 18:29:03,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:29:03,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:29:03,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:04,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:29:04,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:04,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 18:29:04,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:04,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 18:29:04,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:04,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:29:04,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:04,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 18:29:04,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:04,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-13 18:29:04,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:04,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:29:04,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:04,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-13 18:29:04,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:04,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:29:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:04,430 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 18:29:04,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:29:04,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785342367] [2021-11-13 18:29:04,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785342367] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:29:04,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:29:04,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:29:04,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539568028] [2021-11-13 18:29:04,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:29:04,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:29:04,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:29:04,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:29:04,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:29:04,491 INFO L87 Difference]: Start difference. First operand has 959 states, 608 states have (on average 1.238486842105263) internal successors, (753), 649 states have internal predecessors, (753), 250 states have call successors, (250), 73 states have call predecessors, (250), 72 states have return successors, (247), 247 states have call predecessors, (247), 247 states have call successors, (247) Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-13 18:29:06,560 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:29:08,678 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:29:14,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:29:14,376 INFO L93 Difference]: Finished difference Result 2805 states and 3794 transitions. [2021-11-13 18:29:14,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 18:29:14,380 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 64 [2021-11-13 18:29:14,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:29:14,440 INFO L225 Difference]: With dead ends: 2805 [2021-11-13 18:29:14,440 INFO L226 Difference]: Without dead ends: 1852 [2021-11-13 18:29:14,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-11-13 18:29:14,464 INFO L933 BasicCegarLoop]: 1476 mSDtfsCounter, 2409 mSDsluCounter, 2554 mSDsCounter, 0 mSdLazyCounter, 1933 mSolverCounterSat, 1418 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8083.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2548 SdHoareTripleChecker+Valid, 4030 SdHoareTripleChecker+Invalid, 3353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 87.25ms SdHoareTripleChecker+Time, 1418 IncrementalHoareTripleChecker+Valid, 1933 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9318.25ms IncrementalHoareTripleChecker+Time [2021-11-13 18:29:14,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2548 Valid, 4030 Invalid, 3353 Unknown, 0 Unchecked, 87.25ms Time], IncrementalHoareTripleChecker [1418 Valid, 1933 Invalid, 2 Unknown, 0 Unchecked, 9318.25ms Time] [2021-11-13 18:29:14,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1852 states. [2021-11-13 18:29:14,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1852 to 1659. [2021-11-13 18:29:14,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1659 states, 1067 states have (on average 1.1883786316776008) internal successors, (1268), 1122 states have internal predecessors, (1268), 443 states have call successors, (443), 124 states have call predecessors, (443), 121 states have return successors, (442), 434 states have call predecessors, (442), 441 states have call successors, (442) [2021-11-13 18:29:14,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1659 states to 1659 states and 2153 transitions. [2021-11-13 18:29:14,848 INFO L78 Accepts]: Start accepts. Automaton has 1659 states and 2153 transitions. Word has length 64 [2021-11-13 18:29:14,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:29:14,849 INFO L470 AbstractCegarLoop]: Abstraction has 1659 states and 2153 transitions. [2021-11-13 18:29:14,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-13 18:29:14,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1659 states and 2153 transitions. [2021-11-13 18:29:14,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-13 18:29:14,863 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:29:14,864 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-13 18:29:14,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:29:14,864 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_linux_block_genhd_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:29:14,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:29:14,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1959425756, now seen corresponding path program 1 times [2021-11-13 18:29:14,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:29:14,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803318258] [2021-11-13 18:29:14,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:29:14,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:29:15,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:15,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:29:15,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:15,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 18:29:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:15,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 18:29:15,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:15,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:29:15,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:15,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 18:29:15,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:15,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-13 18:29:15,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:15,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:29:15,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:15,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-13 18:29:15,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:15,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:29:15,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:15,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 18:29:15,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:15,394 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 18:29:15,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:29:15,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803318258] [2021-11-13 18:29:15,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803318258] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:29:15,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:29:15,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:29:15,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777829590] [2021-11-13 18:29:15,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:29:15,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:29:15,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:29:15,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:29:15,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:29:15,398 INFO L87 Difference]: Start difference. First operand 1659 states and 2153 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-13 18:29:17,477 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:29:19,618 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:29:22,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:29:22,468 INFO L93 Difference]: Finished difference Result 1659 states and 2153 transitions. [2021-11-13 18:29:22,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:29:22,469 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 70 [2021-11-13 18:29:22,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:29:22,488 INFO L225 Difference]: With dead ends: 1659 [2021-11-13 18:29:22,489 INFO L226 Difference]: Without dead ends: 1657 [2021-11-13 18:29:22,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:29:22,492 INFO L933 BasicCegarLoop]: 1102 mSDtfsCounter, 1652 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 876 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6106.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1792 SdHoareTripleChecker+Valid, 2401 SdHoareTripleChecker+Invalid, 1775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.99ms SdHoareTripleChecker+Time, 876 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6795.31ms IncrementalHoareTripleChecker+Time [2021-11-13 18:29:22,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1792 Valid, 2401 Invalid, 1775 Unknown, 0 Unchecked, 33.99ms Time], IncrementalHoareTripleChecker [876 Valid, 897 Invalid, 2 Unknown, 0 Unchecked, 6795.31ms Time] [2021-11-13 18:29:22,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states. [2021-11-13 18:29:22,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 1657. [2021-11-13 18:29:22,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1657 states, 1066 states have (on average 1.1876172607879925) internal successors, (1266), 1120 states have internal predecessors, (1266), 443 states have call successors, (443), 124 states have call predecessors, (443), 121 states have return successors, (442), 434 states have call predecessors, (442), 441 states have call successors, (442) [2021-11-13 18:29:22,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1657 states to 1657 states and 2151 transitions. [2021-11-13 18:29:22,650 INFO L78 Accepts]: Start accepts. Automaton has 1657 states and 2151 transitions. Word has length 70 [2021-11-13 18:29:22,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:29:22,653 INFO L470 AbstractCegarLoop]: Abstraction has 1657 states and 2151 transitions. [2021-11-13 18:29:22,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-13 18:29:22,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1657 states and 2151 transitions. [2021-11-13 18:29:22,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-13 18:29:22,658 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:29:22,659 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-13 18:29:22,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 18:29:22,660 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_linux_block_queue_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:29:22,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:29:22,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1402994656, now seen corresponding path program 1 times [2021-11-13 18:29:22,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:29:22,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107932798] [2021-11-13 18:29:22,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:29:22,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:29:22,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:23,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:29:23,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:23,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 18:29:23,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:23,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 18:29:23,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:23,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:29:23,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:23,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 18:29:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:23,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-13 18:29:23,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:23,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:29:23,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:23,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-13 18:29:23,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:23,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:29:23,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:23,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 18:29:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:23,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-13 18:29:23,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:23,175 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 18:29:23,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:29:23,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107932798] [2021-11-13 18:29:23,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107932798] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:29:23,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:29:23,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:29:23,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680799674] [2021-11-13 18:29:23,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:29:23,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:29:23,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:29:23,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:29:23,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:29:23,181 INFO L87 Difference]: Start difference. First operand 1657 states and 2151 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-13 18:29:25,217 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:29:27,355 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:29:30,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:29:30,173 INFO L93 Difference]: Finished difference Result 1657 states and 2151 transitions. [2021-11-13 18:29:30,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:29:30,174 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 76 [2021-11-13 18:29:30,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:29:30,191 INFO L225 Difference]: With dead ends: 1657 [2021-11-13 18:29:30,191 INFO L226 Difference]: Without dead ends: 1655 [2021-11-13 18:29:30,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:29:30,194 INFO L933 BasicCegarLoop]: 1100 mSDtfsCounter, 1646 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 876 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6076.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1785 SdHoareTripleChecker+Valid, 2399 SdHoareTripleChecker+Invalid, 1773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.75ms SdHoareTripleChecker+Time, 876 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6716.30ms IncrementalHoareTripleChecker+Time [2021-11-13 18:29:30,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1785 Valid, 2399 Invalid, 1773 Unknown, 0 Unchecked, 29.75ms Time], IncrementalHoareTripleChecker [876 Valid, 895 Invalid, 2 Unknown, 0 Unchecked, 6716.30ms Time] [2021-11-13 18:29:30,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1655 states. [2021-11-13 18:29:30,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1655 to 1655. [2021-11-13 18:29:30,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1655 states, 1065 states have (on average 1.1868544600938966) internal successors, (1264), 1118 states have internal predecessors, (1264), 443 states have call successors, (443), 124 states have call predecessors, (443), 121 states have return successors, (442), 434 states have call predecessors, (442), 441 states have call successors, (442) [2021-11-13 18:29:30,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 2149 transitions. [2021-11-13 18:29:30,326 INFO L78 Accepts]: Start accepts. Automaton has 1655 states and 2149 transitions. Word has length 76 [2021-11-13 18:29:30,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:29:30,327 INFO L470 AbstractCegarLoop]: Abstraction has 1655 states and 2149 transitions. [2021-11-13 18:29:30,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-13 18:29:30,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1655 states and 2149 transitions. [2021-11-13 18:29:30,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-13 18:29:30,329 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:29:30,329 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-13 18:29:30,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 18:29:30,330 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_linux_block_request_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:29:30,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:29:30,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1342220052, now seen corresponding path program 1 times [2021-11-13 18:29:30,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:29:30,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994202558] [2021-11-13 18:29:30,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:29:30,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:29:30,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:30,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:29:30,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:30,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 18:29:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:30,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 18:29:30,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:30,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:29:30,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:30,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 18:29:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:30,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-13 18:29:30,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:30,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:29:30,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:30,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-13 18:29:30,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:30,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:29:30,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:30,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 18:29:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:30,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-13 18:29:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:30,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-13 18:29:30,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:30,732 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 18:29:30,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:29:30,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994202558] [2021-11-13 18:29:30,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994202558] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:29:30,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:29:30,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:29:30,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366103445] [2021-11-13 18:29:30,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:29:30,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:29:30,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:29:30,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:29:30,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:29:30,737 INFO L87 Difference]: Start difference. First operand 1655 states and 2149 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 18:29:32,775 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:29:34,950 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:29:37,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:29:37,764 INFO L93 Difference]: Finished difference Result 1655 states and 2149 transitions. [2021-11-13 18:29:37,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:29:37,765 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 82 [2021-11-13 18:29:37,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:29:37,781 INFO L225 Difference]: With dead ends: 1655 [2021-11-13 18:29:37,781 INFO L226 Difference]: Without dead ends: 1653 [2021-11-13 18:29:37,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:29:37,784 INFO L933 BasicCegarLoop]: 1098 mSDtfsCounter, 1640 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 876 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6101.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1778 SdHoareTripleChecker+Valid, 2397 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.24ms SdHoareTripleChecker+Time, 876 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6764.75ms IncrementalHoareTripleChecker+Time [2021-11-13 18:29:37,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1778 Valid, 2397 Invalid, 1771 Unknown, 0 Unchecked, 28.24ms Time], IncrementalHoareTripleChecker [876 Valid, 893 Invalid, 2 Unknown, 0 Unchecked, 6764.75ms Time] [2021-11-13 18:29:37,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2021-11-13 18:29:37,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1653. [2021-11-13 18:29:37,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1653 states, 1064 states have (on average 1.1860902255639099) internal successors, (1262), 1116 states have internal predecessors, (1262), 443 states have call successors, (443), 124 states have call predecessors, (443), 121 states have return successors, (442), 434 states have call predecessors, (442), 441 states have call successors, (442) [2021-11-13 18:29:37,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1653 states to 1653 states and 2147 transitions. [2021-11-13 18:29:37,922 INFO L78 Accepts]: Start accepts. Automaton has 1653 states and 2147 transitions. Word has length 82 [2021-11-13 18:29:37,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:29:37,922 INFO L470 AbstractCegarLoop]: Abstraction has 1653 states and 2147 transitions. [2021-11-13 18:29:37,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 18:29:37,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1653 states and 2147 transitions. [2021-11-13 18:29:37,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-13 18:29:37,924 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:29:37,925 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-13 18:29:37,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 18:29:37,926 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_linux_drivers_base_class_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:29:37,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:29:37,927 INFO L85 PathProgramCache]: Analyzing trace with hash 148000434, now seen corresponding path program 1 times [2021-11-13 18:29:37,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:29:37,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228889337] [2021-11-13 18:29:37,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:29:37,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:29:38,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:38,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:29:38,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:38,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 18:29:38,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:38,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 18:29:38,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:38,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:29:38,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:38,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 18:29:38,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:38,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-13 18:29:38,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:38,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:29:38,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:38,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-13 18:29:38,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:38,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:29:38,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:38,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 18:29:38,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:38,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-13 18:29:38,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:38,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-13 18:29:38,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:38,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-13 18:29:38,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:38,324 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 18:29:38,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:29:38,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228889337] [2021-11-13 18:29:38,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228889337] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:29:38,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:29:38,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:29:38,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069740361] [2021-11-13 18:29:38,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:29:38,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:29:38,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:29:38,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:29:38,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:29:38,327 INFO L87 Difference]: Start difference. First operand 1653 states and 2147 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-13 18:29:40,389 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:29:42,548 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:29:45,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:29:45,398 INFO L93 Difference]: Finished difference Result 1653 states and 2147 transitions. [2021-11-13 18:29:45,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:29:45,399 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 88 [2021-11-13 18:29:45,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:29:45,412 INFO L225 Difference]: With dead ends: 1653 [2021-11-13 18:29:45,413 INFO L226 Difference]: Without dead ends: 1651 [2021-11-13 18:29:45,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:29:45,416 INFO L933 BasicCegarLoop]: 1096 mSDtfsCounter, 1634 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 876 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6137.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1771 SdHoareTripleChecker+Valid, 2395 SdHoareTripleChecker+Invalid, 1769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.84ms SdHoareTripleChecker+Time, 876 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6823.02ms IncrementalHoareTripleChecker+Time [2021-11-13 18:29:45,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1771 Valid, 2395 Invalid, 1769 Unknown, 0 Unchecked, 26.84ms Time], IncrementalHoareTripleChecker [876 Valid, 891 Invalid, 2 Unknown, 0 Unchecked, 6823.02ms Time] [2021-11-13 18:29:45,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1651 states. [2021-11-13 18:29:45,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1651 to 1651. [2021-11-13 18:29:45,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1651 states, 1063 states have (on average 1.1853245531514582) internal successors, (1260), 1114 states have internal predecessors, (1260), 443 states have call successors, (443), 124 states have call predecessors, (443), 121 states have return successors, (442), 434 states have call predecessors, (442), 441 states have call successors, (442) [2021-11-13 18:29:45,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1651 states to 1651 states and 2145 transitions. [2021-11-13 18:29:45,529 INFO L78 Accepts]: Start accepts. Automaton has 1651 states and 2145 transitions. Word has length 88 [2021-11-13 18:29:45,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:29:45,531 INFO L470 AbstractCegarLoop]: Abstraction has 1651 states and 2145 transitions. [2021-11-13 18:29:45,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-13 18:29:45,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1651 states and 2145 transitions. [2021-11-13 18:29:45,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-13 18:29:45,540 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:29:45,540 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-13 18:29:45,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 18:29:45,541 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:29:45,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:29:45,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1268832777, now seen corresponding path program 1 times [2021-11-13 18:29:45,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:29:45,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737047555] [2021-11-13 18:29:45,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:29:45,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:29:45,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:45,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:29:45,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:45,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 18:29:45,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:45,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 18:29:45,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:45,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-13 18:29:45,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:45,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:29:45,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:46,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:29:46,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:46,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:29:46,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:46,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 18:29:46,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:46,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:29:46,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:46,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:29:46,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:46,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:29:46,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:46,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-13 18:29:46,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:46,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:29:46,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:46,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:29:46,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:46,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:29:46,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:46,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-13 18:29:46,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:46,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-13 18:29:46,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:46,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 18:29:46,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:46,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-13 18:29:46,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:46,241 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-11-13 18:29:46,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:29:46,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737047555] [2021-11-13 18:29:46,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737047555] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:29:46,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:29:46,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 18:29:46,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864364818] [2021-11-13 18:29:46,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:29:46,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 18:29:46,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:29:46,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 18:29:46,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:29:46,245 INFO L87 Difference]: Start difference. First operand 1651 states and 2145 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-13 18:29:48,283 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:29:50,443 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:29:52,646 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:29:54,835 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:29:59,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:29:59,985 INFO L93 Difference]: Finished difference Result 3395 states and 4442 transitions. [2021-11-13 18:29:59,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 18:29:59,986 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 116 [2021-11-13 18:29:59,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:30:00,004 INFO L225 Difference]: With dead ends: 3395 [2021-11-13 18:30:00,004 INFO L226 Difference]: Without dead ends: 1765 [2021-11-13 18:30:00,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-11-13 18:30:00,014 INFO L933 BasicCegarLoop]: 1090 mSDtfsCounter, 2007 mSDsluCounter, 2693 mSDsCounter, 0 mSdLazyCounter, 2632 mSolverCounterSat, 1327 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11939.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2147 SdHoareTripleChecker+Valid, 3783 SdHoareTripleChecker+Invalid, 3963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 48.84ms SdHoareTripleChecker+Time, 1327 IncrementalHoareTripleChecker+Valid, 2632 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13277.53ms IncrementalHoareTripleChecker+Time [2021-11-13 18:30:00,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2147 Valid, 3783 Invalid, 3963 Unknown, 0 Unchecked, 48.84ms Time], IncrementalHoareTripleChecker [1327 Valid, 2632 Invalid, 4 Unknown, 0 Unchecked, 13277.53ms Time] [2021-11-13 18:30:00,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1765 states. [2021-11-13 18:30:00,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1765 to 1669. [2021-11-13 18:30:00,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1669 states, 1075 states have (on average 1.1813953488372093) internal successors, (1270), 1126 states have internal predecessors, (1270), 443 states have call successors, (443), 130 states have call predecessors, (443), 127 states have return successors, (442), 434 states have call predecessors, (442), 441 states have call successors, (442) [2021-11-13 18:30:00,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1669 states to 1669 states and 2155 transitions. [2021-11-13 18:30:00,157 INFO L78 Accepts]: Start accepts. Automaton has 1669 states and 2155 transitions. Word has length 116 [2021-11-13 18:30:00,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:30:00,158 INFO L470 AbstractCegarLoop]: Abstraction has 1669 states and 2155 transitions. [2021-11-13 18:30:00,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-13 18:30:00,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1669 states and 2155 transitions. [2021-11-13 18:30:00,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-13 18:30:00,161 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:30:00,161 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-13 18:30:00,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 18:30:00,162 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:30:00,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:30:00,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1268773195, now seen corresponding path program 1 times [2021-11-13 18:30:00,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:30:00,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087598265] [2021-11-13 18:30:00,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:30:00,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:30:00,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:00,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:30:00,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:00,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 18:30:00,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:00,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 18:30:00,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:00,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-13 18:30:00,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:00,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:30:00,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:00,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:30:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:00,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:30:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:00,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 18:30:00,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:00,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:30:00,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:00,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:30:00,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:00,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:30:00,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:00,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-13 18:30:00,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:00,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:30:00,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:00,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:30:00,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:00,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:30:00,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:00,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-13 18:30:00,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:00,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-13 18:30:00,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:00,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 18:30:00,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:00,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-13 18:30:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:00,578 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-11-13 18:30:00,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:30:00,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087598265] [2021-11-13 18:30:00,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087598265] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:30:00,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:30:00,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:30:00,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877814880] [2021-11-13 18:30:00,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:30:00,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:30:00,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:30:00,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:30:00,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:30:00,582 INFO L87 Difference]: Start difference. First operand 1669 states and 2155 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2021-11-13 18:30:02,621 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:30:04,785 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:30:06,983 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:30:10,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:30:10,672 INFO L93 Difference]: Finished difference Result 1765 states and 2308 transitions. [2021-11-13 18:30:10,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 18:30:10,673 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 116 [2021-11-13 18:30:10,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:30:10,690 INFO L225 Difference]: With dead ends: 1765 [2021-11-13 18:30:10,690 INFO L226 Difference]: Without dead ends: 1763 [2021-11-13 18:30:10,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-11-13 18:30:10,693 INFO L933 BasicCegarLoop]: 1087 mSDtfsCounter, 1210 mSDsluCounter, 2300 mSDsCounter, 0 mSdLazyCounter, 1715 mSolverCounterSat, 1088 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8753.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1210 SdHoareTripleChecker+Valid, 3387 SdHoareTripleChecker+Invalid, 2806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.49ms SdHoareTripleChecker+Time, 1088 IncrementalHoareTripleChecker+Valid, 1715 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9816.50ms IncrementalHoareTripleChecker+Time [2021-11-13 18:30:10,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1210 Valid, 3387 Invalid, 2806 Unknown, 0 Unchecked, 30.49ms Time], IncrementalHoareTripleChecker [1088 Valid, 1715 Invalid, 3 Unknown, 0 Unchecked, 9816.50ms Time] [2021-11-13 18:30:10,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2021-11-13 18:30:10,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 1667. [2021-11-13 18:30:10,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1074 states have (on average 1.179702048417132) internal successors, (1267), 1124 states have internal predecessors, (1267), 443 states have call successors, (443), 130 states have call predecessors, (443), 127 states have return successors, (442), 434 states have call predecessors, (442), 441 states have call successors, (442) [2021-11-13 18:30:10,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 2152 transitions. [2021-11-13 18:30:10,832 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 2152 transitions. Word has length 116 [2021-11-13 18:30:10,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:30:10,832 INFO L470 AbstractCegarLoop]: Abstraction has 1667 states and 2152 transitions. [2021-11-13 18:30:10,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2021-11-13 18:30:10,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 2152 transitions. [2021-11-13 18:30:10,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-13 18:30:10,835 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:30:10,835 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-13 18:30:10,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 18:30:10,836 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_linux_fs_char_dev_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:30:10,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:30:10,836 INFO L85 PathProgramCache]: Analyzing trace with hash -93320400, now seen corresponding path program 1 times [2021-11-13 18:30:10,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:30:10,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468375398] [2021-11-13 18:30:10,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:30:10,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:30:10,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:11,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:30:11,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:11,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 18:30:11,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:11,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 18:30:11,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:11,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:30:11,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:11,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 18:30:11,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:11,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-13 18:30:11,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:11,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:30:11,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:11,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-13 18:30:11,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:11,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:30:11,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:11,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 18:30:11,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:11,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-13 18:30:11,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:11,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-13 18:30:11,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:11,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-13 18:30:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:11,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-13 18:30:11,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:11,168 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 18:30:11,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:30:11,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468375398] [2021-11-13 18:30:11,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468375398] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:30:11,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:30:11,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:30:11,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914095166] [2021-11-13 18:30:11,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:30:11,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:30:11,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:30:11,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:30:11,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:30:11,172 INFO L87 Difference]: Start difference. First operand 1667 states and 2152 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-13 18:30:13,205 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:30:15,468 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:30:17,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:30:17,956 INFO L93 Difference]: Finished difference Result 1667 states and 2152 transitions. [2021-11-13 18:30:17,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:30:17,956 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 94 [2021-11-13 18:30:17,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:30:17,971 INFO L225 Difference]: With dead ends: 1667 [2021-11-13 18:30:17,971 INFO L226 Difference]: Without dead ends: 1665 [2021-11-13 18:30:17,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:30:17,974 INFO L933 BasicCegarLoop]: 1091 mSDtfsCounter, 1619 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 876 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5888.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1755 SdHoareTripleChecker+Valid, 2390 SdHoareTripleChecker+Invalid, 1764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.18ms SdHoareTripleChecker+Time, 876 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6593.48ms IncrementalHoareTripleChecker+Time [2021-11-13 18:30:17,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1755 Valid, 2390 Invalid, 1764 Unknown, 0 Unchecked, 18.18ms Time], IncrementalHoareTripleChecker [876 Valid, 886 Invalid, 2 Unknown, 0 Unchecked, 6593.48ms Time] [2021-11-13 18:30:17,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1665 states. [2021-11-13 18:30:18,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1665 to 1665. [2021-11-13 18:30:18,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1665 states, 1073 states have (on average 1.1789375582479031) internal successors, (1265), 1122 states have internal predecessors, (1265), 443 states have call successors, (443), 130 states have call predecessors, (443), 127 states have return successors, (442), 434 states have call predecessors, (442), 441 states have call successors, (442) [2021-11-13 18:30:18,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1665 states to 1665 states and 2150 transitions. [2021-11-13 18:30:18,114 INFO L78 Accepts]: Start accepts. Automaton has 1665 states and 2150 transitions. Word has length 94 [2021-11-13 18:30:18,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:30:18,115 INFO L470 AbstractCegarLoop]: Abstraction has 1665 states and 2150 transitions. [2021-11-13 18:30:18,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-13 18:30:18,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1665 states and 2150 transitions. [2021-11-13 18:30:18,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-13 18:30:18,118 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:30:18,118 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-13 18:30:18,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-13 18:30:18,119 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr1ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:30:18,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:30:18,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1533254331, now seen corresponding path program 1 times [2021-11-13 18:30:18,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:30:18,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179036403] [2021-11-13 18:30:18,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:30:18,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:30:18,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:18,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:30:18,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:18,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 18:30:18,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:18,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 18:30:18,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:18,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-13 18:30:18,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:18,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:30:18,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:18,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:30:18,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:18,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:30:18,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:18,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 18:30:18,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:18,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:30:18,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:18,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:30:18,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:18,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:30:18,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:18,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-13 18:30:18,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:18,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:30:18,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:18,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:30:18,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:18,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:30:18,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:18,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-13 18:30:18,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:18,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-13 18:30:18,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:18,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 18:30:18,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:18,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-13 18:30:18,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:18,472 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-11-13 18:30:18,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:30:18,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179036403] [2021-11-13 18:30:18,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179036403] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:30:18,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:30:18,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:30:18,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033375526] [2021-11-13 18:30:18,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:30:18,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:30:18,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:30:18,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:30:18,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:30:18,475 INFO L87 Difference]: Start difference. First operand 1665 states and 2150 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-13 18:30:20,510 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:30:22,706 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:30:24,892 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:30:27,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:30:27,245 INFO L93 Difference]: Finished difference Result 3399 states and 4433 transitions. [2021-11-13 18:30:27,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:30:27,245 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 120 [2021-11-13 18:30:27,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:30:27,261 INFO L225 Difference]: With dead ends: 3399 [2021-11-13 18:30:27,262 INFO L226 Difference]: Without dead ends: 1755 [2021-11-13 18:30:27,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:30:27,271 INFO L933 BasicCegarLoop]: 1081 mSDtfsCounter, 2011 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 1321 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7667.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2161 SdHoareTripleChecker+Valid, 1987 SdHoareTripleChecker+Invalid, 2041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.69ms SdHoareTripleChecker+Time, 1321 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8562.49ms IncrementalHoareTripleChecker+Time [2021-11-13 18:30:27,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2161 Valid, 1987 Invalid, 2041 Unknown, 0 Unchecked, 15.69ms Time], IncrementalHoareTripleChecker [1321 Valid, 717 Invalid, 3 Unknown, 0 Unchecked, 8562.49ms Time] [2021-11-13 18:30:27,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1755 states. [2021-11-13 18:30:27,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1755 to 1659. [2021-11-13 18:30:27,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1659 states, 1068 states have (on average 1.1760299625468165) internal successors, (1256), 1116 states have internal predecessors, (1256), 443 states have call successors, (443), 130 states have call predecessors, (443), 127 states have return successors, (442), 434 states have call predecessors, (442), 441 states have call successors, (442) [2021-11-13 18:30:27,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1659 states to 1659 states and 2141 transitions. [2021-11-13 18:30:27,413 INFO L78 Accepts]: Start accepts. Automaton has 1659 states and 2141 transitions. Word has length 120 [2021-11-13 18:30:27,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:30:27,414 INFO L470 AbstractCegarLoop]: Abstraction has 1659 states and 2141 transitions. [2021-11-13 18:30:27,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-13 18:30:27,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1659 states and 2141 transitions. [2021-11-13 18:30:27,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-13 18:30:27,416 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:30:27,416 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-13 18:30:27,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-13 18:30:27,417 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:30:27,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:30:27,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1709105799, now seen corresponding path program 1 times [2021-11-13 18:30:27,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:30:27,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919963157] [2021-11-13 18:30:27,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:30:27,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:30:27,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:27,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:30:27,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:27,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 18:30:27,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:27,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 18:30:27,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:27,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:30:27,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:27,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 18:30:27,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:27,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-13 18:30:27,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:27,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:30:27,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:27,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-13 18:30:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:27,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:30:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:27,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 18:30:27,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:27,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-13 18:30:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:27,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-13 18:30:27,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:27,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-13 18:30:27,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:27,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-13 18:30:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:27,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-13 18:30:27,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:27,724 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 18:30:27,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:30:27,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919963157] [2021-11-13 18:30:27,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919963157] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:30:27,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:30:27,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:30:27,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700671259] [2021-11-13 18:30:27,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:30:27,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:30:27,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:30:27,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:30:27,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:30:27,728 INFO L87 Difference]: Start difference. First operand 1659 states and 2141 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-13 18:30:29,775 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:30:31,975 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:30:34,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:30:34,648 INFO L93 Difference]: Finished difference Result 1659 states and 2141 transitions. [2021-11-13 18:30:34,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:30:34,649 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 100 [2021-11-13 18:30:34,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:30:34,663 INFO L225 Difference]: With dead ends: 1659 [2021-11-13 18:30:34,664 INFO L226 Difference]: Without dead ends: 1657 [2021-11-13 18:30:34,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:30:34,666 INFO L933 BasicCegarLoop]: 1084 mSDtfsCounter, 1598 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 876 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5938.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1733 SdHoareTripleChecker+Valid, 2383 SdHoareTripleChecker+Invalid, 1757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.11ms SdHoareTripleChecker+Time, 876 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6668.80ms IncrementalHoareTripleChecker+Time [2021-11-13 18:30:34,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1733 Valid, 2383 Invalid, 1757 Unknown, 0 Unchecked, 20.11ms Time], IncrementalHoareTripleChecker [876 Valid, 879 Invalid, 2 Unknown, 0 Unchecked, 6668.80ms Time] [2021-11-13 18:30:34,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states. [2021-11-13 18:30:34,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 1657. [2021-11-13 18:30:34,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1657 states, 1067 states have (on average 1.175257731958763) internal successors, (1254), 1114 states have internal predecessors, (1254), 443 states have call successors, (443), 130 states have call predecessors, (443), 127 states have return successors, (442), 434 states have call predecessors, (442), 441 states have call successors, (442) [2021-11-13 18:30:34,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1657 states to 1657 states and 2139 transitions. [2021-11-13 18:30:34,819 INFO L78 Accepts]: Start accepts. Automaton has 1657 states and 2139 transitions. Word has length 100 [2021-11-13 18:30:34,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:30:34,819 INFO L470 AbstractCegarLoop]: Abstraction has 1657 states and 2139 transitions. [2021-11-13 18:30:34,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-13 18:30:34,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1657 states and 2139 transitions. [2021-11-13 18:30:34,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-13 18:30:34,822 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:30:34,822 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-13 18:30:34,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-13 18:30:34,823 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_linux_kernel_locking_rwlock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:30:34,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:30:34,824 INFO L85 PathProgramCache]: Analyzing trace with hash 2127900869, now seen corresponding path program 1 times [2021-11-13 18:30:34,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:30:34,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612081997] [2021-11-13 18:30:34,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:30:34,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:30:34,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:34,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:30:34,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:34,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 18:30:34,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:34,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 18:30:34,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:35,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:30:35,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:35,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 18:30:35,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:35,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-13 18:30:35,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:35,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:30:35,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:35,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-13 18:30:35,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:35,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:30:35,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:35,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 18:30:35,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:35,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-13 18:30:35,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:35,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-13 18:30:35,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:35,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-13 18:30:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:35,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-13 18:30:35,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:35,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-13 18:30:35,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:35,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 18:30:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:35,139 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 18:30:35,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:30:35,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612081997] [2021-11-13 18:30:35,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612081997] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:30:35,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:30:35,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:30:35,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131803024] [2021-11-13 18:30:35,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:30:35,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:30:35,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:30:35,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:30:35,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:30:35,153 INFO L87 Difference]: Start difference. First operand 1657 states and 2139 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-13 18:30:37,200 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:30:39,418 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:30:41,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:30:41,875 INFO L93 Difference]: Finished difference Result 1657 states and 2139 transitions. [2021-11-13 18:30:41,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:30:41,876 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 106 [2021-11-13 18:30:41,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:30:41,890 INFO L225 Difference]: With dead ends: 1657 [2021-11-13 18:30:41,890 INFO L226 Difference]: Without dead ends: 1655 [2021-11-13 18:30:41,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:30:41,911 INFO L933 BasicCegarLoop]: 1082 mSDtfsCounter, 1596 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 876 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5746.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1730 SdHoareTripleChecker+Valid, 2381 SdHoareTripleChecker+Invalid, 1751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.66ms SdHoareTripleChecker+Time, 876 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6484.33ms IncrementalHoareTripleChecker+Time [2021-11-13 18:30:41,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1730 Valid, 2381 Invalid, 1751 Unknown, 0 Unchecked, 16.66ms Time], IncrementalHoareTripleChecker [876 Valid, 873 Invalid, 2 Unknown, 0 Unchecked, 6484.33ms Time] [2021-11-13 18:30:41,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1655 states. [2021-11-13 18:30:42,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1655 to 1655. [2021-11-13 18:30:42,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1655 states, 1066 states have (on average 1.174484052532833) internal successors, (1252), 1112 states have internal predecessors, (1252), 443 states have call successors, (443), 130 states have call predecessors, (443), 127 states have return successors, (442), 434 states have call predecessors, (442), 441 states have call successors, (442) [2021-11-13 18:30:42,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 2137 transitions. [2021-11-13 18:30:42,072 INFO L78 Accepts]: Start accepts. Automaton has 1655 states and 2137 transitions. Word has length 106 [2021-11-13 18:30:42,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:30:42,073 INFO L470 AbstractCegarLoop]: Abstraction has 1655 states and 2137 transitions. [2021-11-13 18:30:42,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-13 18:30:42,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1655 states and 2137 transitions. [2021-11-13 18:30:42,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-13 18:30:42,076 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:30:42,076 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-13 18:30:42,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-13 18:30:42,077 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_linux_kernel_locking_rwlock_check_final_stateErr1ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:30:42,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:30:42,078 INFO L85 PathProgramCache]: Analyzing trace with hash 508438824, now seen corresponding path program 1 times [2021-11-13 18:30:42,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:30:42,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7012214] [2021-11-13 18:30:42,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:30:42,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:30:42,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:42,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:30:42,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:42,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 18:30:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:42,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 18:30:42,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:42,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:30:42,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:42,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 18:30:42,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:42,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-13 18:30:42,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:42,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:30:42,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:42,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-13 18:30:42,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:42,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:30:42,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:42,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 18:30:42,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:42,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-13 18:30:42,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:42,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-13 18:30:42,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:42,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-13 18:30:42,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:42,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-13 18:30:42,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:42,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-13 18:30:42,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:42,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 18:30:42,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:42,418 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 18:30:42,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:30:42,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7012214] [2021-11-13 18:30:42,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7012214] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:30:42,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:30:42,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:30:42,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732386988] [2021-11-13 18:30:42,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:30:42,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:30:42,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:30:42,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:30:42,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:30:42,421 INFO L87 Difference]: Start difference. First operand 1655 states and 2137 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-13 18:30:44,466 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:30:46,675 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:30:49,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:30:49,252 INFO L93 Difference]: Finished difference Result 1655 states and 2137 transitions. [2021-11-13 18:30:49,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:30:49,253 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 108 [2021-11-13 18:30:49,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:30:49,266 INFO L225 Difference]: With dead ends: 1655 [2021-11-13 18:30:49,266 INFO L226 Difference]: Without dead ends: 1653 [2021-11-13 18:30:49,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:30:49,268 INFO L933 BasicCegarLoop]: 1080 mSDtfsCounter, 1584 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 876 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5865.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1718 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 1753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.24ms SdHoareTripleChecker+Time, 876 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6621.46ms IncrementalHoareTripleChecker+Time [2021-11-13 18:30:49,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1718 Valid, 2379 Invalid, 1753 Unknown, 0 Unchecked, 17.24ms Time], IncrementalHoareTripleChecker [876 Valid, 875 Invalid, 2 Unknown, 0 Unchecked, 6621.46ms Time] [2021-11-13 18:30:49,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2021-11-13 18:30:49,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1653. [2021-11-13 18:30:49,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1653 states, 1065 states have (on average 1.1737089201877935) internal successors, (1250), 1110 states have internal predecessors, (1250), 443 states have call successors, (443), 130 states have call predecessors, (443), 127 states have return successors, (442), 434 states have call predecessors, (442), 441 states have call successors, (442) [2021-11-13 18:30:49,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1653 states to 1653 states and 2135 transitions. [2021-11-13 18:30:49,425 INFO L78 Accepts]: Start accepts. Automaton has 1653 states and 2135 transitions. Word has length 108 [2021-11-13 18:30:49,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:30:49,425 INFO L470 AbstractCegarLoop]: Abstraction has 1653 states and 2135 transitions. [2021-11-13 18:30:49,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-13 18:30:49,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1653 states and 2135 transitions. [2021-11-13 18:30:49,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-13 18:30:49,428 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:30:49,428 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-13 18:30:49,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-13 18:30:49,429 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_linux_kernel_module_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:30:49,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:30:49,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1683136456, now seen corresponding path program 1 times [2021-11-13 18:30:49,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:30:49,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462847704] [2021-11-13 18:30:49,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:30:49,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:30:49,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:49,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:30:49,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:49,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 18:30:49,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:49,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 18:30:49,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:49,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:30:49,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:49,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 18:30:49,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:49,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-13 18:30:49,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:49,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:30:49,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:49,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-13 18:30:49,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:49,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:30:49,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:49,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 18:30:49,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:49,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-13 18:30:49,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:49,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-13 18:30:49,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:49,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-13 18:30:49,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:49,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-13 18:30:49,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:49,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-13 18:30:49,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:49,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 18:30:49,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:49,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-13 18:30:49,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:49,751 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 18:30:49,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:30:49,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462847704] [2021-11-13 18:30:49,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462847704] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:30:49,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:30:49,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:30:49,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128464350] [2021-11-13 18:30:49,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:30:49,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:30:49,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:30:49,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:30:49,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:30:49,754 INFO L87 Difference]: Start difference. First operand 1653 states and 2135 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (18), 4 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-13 18:30:51,793 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:30:54,009 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:30:56,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:30:56,442 INFO L93 Difference]: Finished difference Result 1653 states and 2135 transitions. [2021-11-13 18:30:56,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:30:56,443 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (18), 4 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 114 [2021-11-13 18:30:56,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:30:56,456 INFO L225 Difference]: With dead ends: 1653 [2021-11-13 18:30:56,457 INFO L226 Difference]: Without dead ends: 1651 [2021-11-13 18:30:56,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:30:56,459 INFO L933 BasicCegarLoop]: 1078 mSDtfsCounter, 1580 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 876 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5714.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1713 SdHoareTripleChecker+Valid, 2377 SdHoareTripleChecker+Invalid, 1751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.45ms SdHoareTripleChecker+Time, 876 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6494.83ms IncrementalHoareTripleChecker+Time [2021-11-13 18:30:56,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1713 Valid, 2377 Invalid, 1751 Unknown, 0 Unchecked, 16.45ms Time], IncrementalHoareTripleChecker [876 Valid, 873 Invalid, 2 Unknown, 0 Unchecked, 6494.83ms Time] [2021-11-13 18:30:56,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1651 states. [2021-11-13 18:30:56,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1651 to 1651. [2021-11-13 18:30:56,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1651 states, 1064 states have (on average 1.1729323308270676) internal successors, (1248), 1108 states have internal predecessors, (1248), 443 states have call successors, (443), 130 states have call predecessors, (443), 127 states have return successors, (442), 434 states have call predecessors, (442), 441 states have call successors, (442) [2021-11-13 18:30:56,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1651 states to 1651 states and 2133 transitions. [2021-11-13 18:30:56,619 INFO L78 Accepts]: Start accepts. Automaton has 1651 states and 2133 transitions. Word has length 114 [2021-11-13 18:30:56,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:30:56,619 INFO L470 AbstractCegarLoop]: Abstraction has 1651 states and 2133 transitions. [2021-11-13 18:30:56,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (18), 4 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-13 18:30:56,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1651 states and 2133 transitions. [2021-11-13 18:30:56,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-13 18:30:56,622 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:30:56,622 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-13 18:30:56,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-13 18:30:56,623 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_linux_kernel_rcu_update_lock_bh_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:30:56,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:30:56,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1638841309, now seen corresponding path program 1 times [2021-11-13 18:30:56,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:30:56,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849216170] [2021-11-13 18:30:56,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:30:56,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:30:56,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:56,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:30:56,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:56,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 18:30:56,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:56,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 18:30:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:56,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:30:56,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:56,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 18:30:56,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:56,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-13 18:30:56,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:56,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:30:56,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:56,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-13 18:30:56,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:56,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:30:56,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:56,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 18:30:56,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:56,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-13 18:30:56,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:56,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-13 18:30:56,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:56,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-13 18:30:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:56,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-13 18:30:56,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:56,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-13 18:30:56,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:56,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 18:30:56,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:56,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-13 18:30:56,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:56,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-13 18:30:56,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:57,015 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 18:30:57,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:30:57,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849216170] [2021-11-13 18:30:57,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849216170] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:30:57,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:30:57,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:30:57,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326553813] [2021-11-13 18:30:57,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:30:57,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:30:57,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:30:57,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:30:57,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:30:57,018 INFO L87 Difference]: Start difference. First operand 1651 states and 2133 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-13 18:30:59,086 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:31:01,282 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:31:03,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:31:03,724 INFO L93 Difference]: Finished difference Result 1651 states and 2133 transitions. [2021-11-13 18:31:03,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:31:03,725 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 120 [2021-11-13 18:31:03,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:31:03,736 INFO L225 Difference]: With dead ends: 1651 [2021-11-13 18:31:03,736 INFO L226 Difference]: Without dead ends: 1649 [2021-11-13 18:31:03,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:31:03,737 INFO L933 BasicCegarLoop]: 1076 mSDtfsCounter, 1574 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 876 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5764.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1706 SdHoareTripleChecker+Valid, 2375 SdHoareTripleChecker+Invalid, 1749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.63ms SdHoareTripleChecker+Time, 876 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6511.70ms IncrementalHoareTripleChecker+Time [2021-11-13 18:31:03,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1706 Valid, 2375 Invalid, 1749 Unknown, 0 Unchecked, 16.63ms Time], IncrementalHoareTripleChecker [876 Valid, 871 Invalid, 2 Unknown, 0 Unchecked, 6511.70ms Time] [2021-11-13 18:31:03,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2021-11-13 18:31:03,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 1649. [2021-11-13 18:31:03,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1649 states, 1063 states have (on average 1.1721542803386642) internal successors, (1246), 1106 states have internal predecessors, (1246), 443 states have call successors, (443), 130 states have call predecessors, (443), 127 states have return successors, (442), 434 states have call predecessors, (442), 441 states have call successors, (442) [2021-11-13 18:31:03,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 2131 transitions. [2021-11-13 18:31:03,909 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 2131 transitions. Word has length 120 [2021-11-13 18:31:03,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:31:03,909 INFO L470 AbstractCegarLoop]: Abstraction has 1649 states and 2131 transitions. [2021-11-13 18:31:03,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-13 18:31:03,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 2131 transitions. [2021-11-13 18:31:03,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-13 18:31:03,913 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:31:03,913 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-13 18:31:03,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-13 18:31:03,914 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_linux_kernel_rcu_update_lock_sched_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:31:03,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:31:03,914 INFO L85 PathProgramCache]: Analyzing trace with hash 941688793, now seen corresponding path program 1 times [2021-11-13 18:31:03,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:31:03,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705922196] [2021-11-13 18:31:03,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:31:03,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:31:03,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:04,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:31:04,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:04,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 18:31:04,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:04,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 18:31:04,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:04,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:31:04,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:04,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 18:31:04,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:04,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-13 18:31:04,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:04,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:31:04,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:04,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-13 18:31:04,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:04,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:31:04,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:04,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 18:31:04,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:04,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-13 18:31:04,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:04,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-13 18:31:04,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:04,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-13 18:31:04,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:04,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-13 18:31:04,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:04,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-13 18:31:04,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:04,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 18:31:04,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:04,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-13 18:31:04,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:04,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-13 18:31:04,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:04,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-13 18:31:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:04,305 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 18:31:04,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:31:04,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705922196] [2021-11-13 18:31:04,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705922196] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:31:04,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:31:04,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:31:04,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864527794] [2021-11-13 18:31:04,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:31:04,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:31:04,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:31:04,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:31:04,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:31:04,309 INFO L87 Difference]: Start difference. First operand 1649 states and 2131 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-13 18:31:06,348 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:31:08,569 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:31:10,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:31:10,979 INFO L93 Difference]: Finished difference Result 1649 states and 2131 transitions. [2021-11-13 18:31:10,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:31:10,980 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 126 [2021-11-13 18:31:10,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:31:10,992 INFO L225 Difference]: With dead ends: 1649 [2021-11-13 18:31:10,992 INFO L226 Difference]: Without dead ends: 1647 [2021-11-13 18:31:10,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:31:10,995 INFO L933 BasicCegarLoop]: 1074 mSDtfsCounter, 1568 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 876 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5735.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1699 SdHoareTripleChecker+Valid, 2373 SdHoareTripleChecker+Invalid, 1747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.18ms SdHoareTripleChecker+Time, 876 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6472.89ms IncrementalHoareTripleChecker+Time [2021-11-13 18:31:10,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1699 Valid, 2373 Invalid, 1747 Unknown, 0 Unchecked, 17.18ms Time], IncrementalHoareTripleChecker [876 Valid, 869 Invalid, 2 Unknown, 0 Unchecked, 6472.89ms Time] [2021-11-13 18:31:10,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2021-11-13 18:31:11,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 1647. [2021-11-13 18:31:11,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1647 states, 1062 states have (on average 1.1713747645951036) internal successors, (1244), 1104 states have internal predecessors, (1244), 443 states have call successors, (443), 130 states have call predecessors, (443), 127 states have return successors, (442), 434 states have call predecessors, (442), 441 states have call successors, (442) [2021-11-13 18:31:11,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1647 states to 1647 states and 2129 transitions. [2021-11-13 18:31:11,161 INFO L78 Accepts]: Start accepts. Automaton has 1647 states and 2129 transitions. Word has length 126 [2021-11-13 18:31:11,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:31:11,161 INFO L470 AbstractCegarLoop]: Abstraction has 1647 states and 2129 transitions. [2021-11-13 18:31:11,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-13 18:31:11,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1647 states and 2129 transitions. [2021-11-13 18:31:11,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-13 18:31:11,165 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:31:11,166 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:31:11,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-13 18:31:11,166 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:31:11,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:31:11,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1629151933, now seen corresponding path program 1 times [2021-11-13 18:31:11,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:31:11,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248694154] [2021-11-13 18:31:11,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:31:11,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:31:11,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:11,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:31:11,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:11,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 18:31:11,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:11,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 18:31:11,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:11,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-13 18:31:11,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:11,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:31:11,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:11,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:31:11,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:11,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:31:11,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:11,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 18:31:11,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:11,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:31:11,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:11,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:31:11,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:11,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:31:11,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:11,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-13 18:31:11,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:11,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:31:11,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:11,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:31:11,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:11,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:31:11,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:11,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-13 18:31:11,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:11,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-13 18:31:11,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:11,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 18:31:11,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:11,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-13 18:31:11,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:11,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:31:11,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:11,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:31:11,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:11,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 18:31:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:11,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:31:11,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:11,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-13 18:31:11,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:11,571 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2021-11-13 18:31:11,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:31:11,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248694154] [2021-11-13 18:31:11,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248694154] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:31:11,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:31:11,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:31:11,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911487361] [2021-11-13 18:31:11,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:31:11,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:31:11,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:31:11,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:31:11,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:31:11,577 INFO L87 Difference]: Start difference. First operand 1647 states and 2129 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-13 18:31:13,616 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:31:15,841 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:31:18,095 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:31:20,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:31:20,884 INFO L93 Difference]: Finished difference Result 3369 states and 4381 transitions. [2021-11-13 18:31:20,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:31:20,884 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 149 [2021-11-13 18:31:20,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:31:20,899 INFO L225 Difference]: With dead ends: 3369 [2021-11-13 18:31:20,899 INFO L226 Difference]: Without dead ends: 1743 [2021-11-13 18:31:20,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:31:20,908 INFO L933 BasicCegarLoop]: 910 mSDtfsCounter, 2289 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 1658 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7927.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2443 SdHoareTripleChecker+Valid, 1778 SdHoareTripleChecker+Invalid, 2560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.22ms SdHoareTripleChecker+Time, 1658 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9023.35ms IncrementalHoareTripleChecker+Time [2021-11-13 18:31:20,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2443 Valid, 1778 Invalid, 2560 Unknown, 0 Unchecked, 15.22ms Time], IncrementalHoareTripleChecker [1658 Valid, 899 Invalid, 3 Unknown, 0 Unchecked, 9023.35ms Time] [2021-11-13 18:31:20,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2021-11-13 18:31:21,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1641. [2021-11-13 18:31:21,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1641 states, 1057 states have (on average 1.1684011352885526) internal successors, (1235), 1098 states have internal predecessors, (1235), 443 states have call successors, (443), 130 states have call predecessors, (443), 127 states have return successors, (442), 434 states have call predecessors, (442), 441 states have call successors, (442) [2021-11-13 18:31:21,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1641 states to 1641 states and 2120 transitions. [2021-11-13 18:31:21,084 INFO L78 Accepts]: Start accepts. Automaton has 1641 states and 2120 transitions. Word has length 149 [2021-11-13 18:31:21,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:31:21,085 INFO L470 AbstractCegarLoop]: Abstraction has 1641 states and 2120 transitions. [2021-11-13 18:31:21,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-13 18:31:21,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1641 states and 2120 transitions. [2021-11-13 18:31:21,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-13 18:31:21,088 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:31:21,088 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-13 18:31:21,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-13 18:31:21,089 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:31:21,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:31:21,090 INFO L85 PathProgramCache]: Analyzing trace with hash -547875515, now seen corresponding path program 1 times [2021-11-13 18:31:21,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:31:21,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872934341] [2021-11-13 18:31:21,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:31:21,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:31:21,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:21,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:31:21,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:21,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 18:31:21,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:21,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 18:31:21,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:21,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:31:21,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:21,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 18:31:21,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:21,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-13 18:31:21,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:21,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:31:21,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:21,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-13 18:31:21,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:21,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:31:21,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:21,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 18:31:21,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:21,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-13 18:31:21,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:21,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-13 18:31:21,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:21,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-13 18:31:21,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:21,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-13 18:31:21,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:21,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-13 18:31:21,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:21,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 18:31:21,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:21,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-13 18:31:21,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:21,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-13 18:31:21,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:21,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-13 18:31:21,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:21,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-13 18:31:21,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:21,456 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 18:31:21,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:31:21,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872934341] [2021-11-13 18:31:21,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872934341] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:31:21,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:31:21,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:31:21,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424042590] [2021-11-13 18:31:21,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:31:21,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:31:21,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:31:21,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:31:21,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:31:21,460 INFO L87 Difference]: Start difference. First operand 1641 states and 2120 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-13 18:31:23,497 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:31:25,737 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:31:28,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:31:28,196 INFO L93 Difference]: Finished difference Result 1641 states and 2120 transitions. [2021-11-13 18:31:28,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:31:28,196 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 132 [2021-11-13 18:31:28,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:31:28,213 INFO L225 Difference]: With dead ends: 1641 [2021-11-13 18:31:28,214 INFO L226 Difference]: Without dead ends: 1639 [2021-11-13 18:31:28,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:31:28,216 INFO L933 BasicCegarLoop]: 1067 mSDtfsCounter, 1557 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 876 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5730.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1687 SdHoareTripleChecker+Valid, 2352 SdHoareTripleChecker+Invalid, 1744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.63ms SdHoareTripleChecker+Time, 876 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6520.66ms IncrementalHoareTripleChecker+Time [2021-11-13 18:31:28,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1687 Valid, 2352 Invalid, 1744 Unknown, 0 Unchecked, 16.63ms Time], IncrementalHoareTripleChecker [876 Valid, 866 Invalid, 2 Unknown, 0 Unchecked, 6520.66ms Time] [2021-11-13 18:31:28,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2021-11-13 18:31:28,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1639. [2021-11-13 18:31:28,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1639 states, 1056 states have (on average 1.1676136363636365) internal successors, (1233), 1096 states have internal predecessors, (1233), 443 states have call successors, (443), 130 states have call predecessors, (443), 127 states have return successors, (442), 434 states have call predecessors, (442), 441 states have call successors, (442) [2021-11-13 18:31:28,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 2118 transitions. [2021-11-13 18:31:28,395 INFO L78 Accepts]: Start accepts. Automaton has 1639 states and 2118 transitions. Word has length 132 [2021-11-13 18:31:28,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:31:28,396 INFO L470 AbstractCegarLoop]: Abstraction has 1639 states and 2118 transitions. [2021-11-13 18:31:28,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-13 18:31:28,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1639 states and 2118 transitions. [2021-11-13 18:31:28,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-13 18:31:28,400 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:31:28,400 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-13 18:31:28,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-13 18:31:28,401 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:31:28,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:31:28,401 INFO L85 PathProgramCache]: Analyzing trace with hash 2144276236, now seen corresponding path program 1 times [2021-11-13 18:31:28,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:31:28,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888396969] [2021-11-13 18:31:28,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:31:28,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:31:28,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:28,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:31:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:28,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 18:31:28,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:28,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 18:31:28,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:28,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-13 18:31:28,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:28,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:31:28,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:28,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:31:28,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:28,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:31:28,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:28,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 18:31:28,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:28,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:31:28,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:28,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:31:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:28,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:31:28,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:28,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-13 18:31:28,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:28,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:31:28,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:28,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:31:28,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:28,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:31:28,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:28,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-13 18:31:28,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:28,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-13 18:31:28,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:28,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 18:31:28,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:28,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-13 18:31:28,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:28,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:31:28,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:28,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:31:28,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:28,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 18:31:28,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:28,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:31:28,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:28,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-13 18:31:28,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:28,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-11-13 18:31:28,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:28,933 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2021-11-13 18:31:28,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:31:28,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888396969] [2021-11-13 18:31:28,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888396969] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:31:28,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550723607] [2021-11-13 18:31:28,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:31:28,935 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:31:28,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:31:28,937 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:31:28,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 18:31:29,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:29,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 1721 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:31:29,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:31:30,230 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-11-13 18:31:30,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:31:30,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550723607] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:31:30,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:31:30,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2021-11-13 18:31:30,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689204627] [2021-11-13 18:31:30,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:31:30,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:31:30,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:31:30,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:31:30,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:31:30,236 INFO L87 Difference]: Start difference. First operand 1639 states and 2118 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-13 18:31:30,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:31:30,451 INFO L93 Difference]: Finished difference Result 3251 states and 4198 transitions. [2021-11-13 18:31:30,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:31:30,452 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 155 [2021-11-13 18:31:30,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:31:30,462 INFO L225 Difference]: With dead ends: 3251 [2021-11-13 18:31:30,463 INFO L226 Difference]: Without dead ends: 1633 [2021-11-13 18:31:30,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:31:30,471 INFO L933 BasicCegarLoop]: 1159 mSDtfsCounter, 1104 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1104 SdHoareTripleChecker+Valid, 1159 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.98ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.45ms IncrementalHoareTripleChecker+Time [2021-11-13 18:31:30,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1104 Valid, 1159 Invalid, 2 Unknown, 0 Unchecked, 3.98ms Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 34.45ms Time] [2021-11-13 18:31:30,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2021-11-13 18:31:30,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1633. [2021-11-13 18:31:30,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1633 states, 1051 states have (on average 1.164605137963844) internal successors, (1224), 1090 states have internal predecessors, (1224), 443 states have call successors, (443), 130 states have call predecessors, (443), 127 states have return successors, (442), 434 states have call predecessors, (442), 441 states have call successors, (442) [2021-11-13 18:31:30,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1633 states to 1633 states and 2109 transitions. [2021-11-13 18:31:30,703 INFO L78 Accepts]: Start accepts. Automaton has 1633 states and 2109 transitions. Word has length 155 [2021-11-13 18:31:30,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:31:30,704 INFO L470 AbstractCegarLoop]: Abstraction has 1633 states and 2109 transitions. [2021-11-13 18:31:30,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-13 18:31:30,704 INFO L276 IsEmpty]: Start isEmpty. Operand 1633 states and 2109 transitions. [2021-11-13 18:31:30,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-13 18:31:30,707 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:31:30,708 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-13 18:31:30,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-13 18:31:30,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-13 18:31:30,931 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_linux_kernel_rcu_srcu_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:31:30,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:31:30,932 INFO L85 PathProgramCache]: Analyzing trace with hash 90130754, now seen corresponding path program 1 times [2021-11-13 18:31:30,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:31:30,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745074023] [2021-11-13 18:31:30,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:31:30,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:31:31,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:31,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:31:31,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:31,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 18:31:31,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:31,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 18:31:31,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:31,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:31:31,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:31,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 18:31:31,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:31,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-13 18:31:31,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:31,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:31:31,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:31,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-13 18:31:31,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:31,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:31:31,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:31,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 18:31:31,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:31,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-13 18:31:31,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:31,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-13 18:31:31,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:31,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-13 18:31:31,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:31,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-13 18:31:31,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:31,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-13 18:31:31,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:31,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 18:31:31,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:31,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-13 18:31:31,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:31,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-13 18:31:31,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:31,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-13 18:31:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:31,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-13 18:31:31,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:31,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-13 18:31:31,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:31,336 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 18:31:31,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:31:31,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745074023] [2021-11-13 18:31:31,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745074023] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:31:31,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:31:31,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:31:31,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414007141] [2021-11-13 18:31:31,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:31:31,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:31:31,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:31:31,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:31:31,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:31:31,340 INFO L87 Difference]: Start difference. First operand 1633 states and 2109 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-13 18:31:33,402 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:31:35,795 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:31:38,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:31:38,373 INFO L93 Difference]: Finished difference Result 1633 states and 2109 transitions. [2021-11-13 18:31:38,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:31:38,374 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 138 [2021-11-13 18:31:38,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:31:38,380 INFO L225 Difference]: With dead ends: 1633 [2021-11-13 18:31:38,380 INFO L226 Difference]: Without dead ends: 1631 [2021-11-13 18:31:38,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:31:38,382 INFO L933 BasicCegarLoop]: 1060 mSDtfsCounter, 1546 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 876 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5931.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1675 SdHoareTripleChecker+Valid, 2331 SdHoareTripleChecker+Invalid, 1741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.76ms SdHoareTripleChecker+Time, 876 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6797.28ms IncrementalHoareTripleChecker+Time [2021-11-13 18:31:38,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1675 Valid, 2331 Invalid, 1741 Unknown, 0 Unchecked, 16.76ms Time], IncrementalHoareTripleChecker [876 Valid, 863 Invalid, 2 Unknown, 0 Unchecked, 6797.28ms Time] [2021-11-13 18:31:38,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2021-11-13 18:31:38,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1631. [2021-11-13 18:31:38,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1050 states have (on average 1.1638095238095238) internal successors, (1222), 1088 states have internal predecessors, (1222), 443 states have call successors, (443), 130 states have call predecessors, (443), 127 states have return successors, (442), 434 states have call predecessors, (442), 441 states have call successors, (442) [2021-11-13 18:31:38,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 2107 transitions. [2021-11-13 18:31:38,553 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 2107 transitions. Word has length 138 [2021-11-13 18:31:38,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:31:38,554 INFO L470 AbstractCegarLoop]: Abstraction has 1631 states and 2107 transitions. [2021-11-13 18:31:38,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-13 18:31:38,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 2107 transitions. [2021-11-13 18:31:38,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-13 18:31:38,558 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:31:38,558 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-13 18:31:38,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-13 18:31:38,558 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_linux_lib_idr_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:31:38,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:31:38,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1354484047, now seen corresponding path program 1 times [2021-11-13 18:31:38,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:31:38,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358828019] [2021-11-13 18:31:38,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:31:38,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:31:38,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:38,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:31:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:38,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 18:31:38,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:38,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 18:31:38,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:38,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:31:38,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:38,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 18:31:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:38,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-13 18:31:38,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:38,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:31:38,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:38,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-13 18:31:38,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:38,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:31:38,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:38,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 18:31:38,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:38,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-13 18:31:38,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:38,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-13 18:31:38,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:38,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-13 18:31:38,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:38,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-13 18:31:38,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:38,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-13 18:31:38,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:38,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 18:31:38,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:38,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-13 18:31:38,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:38,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-13 18:31:38,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:38,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-13 18:31:38,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:38,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-13 18:31:38,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:38,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-13 18:31:38,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:38,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-13 18:31:38,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:38,939 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 18:31:38,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:31:38,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358828019] [2021-11-13 18:31:38,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358828019] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:31:38,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:31:38,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:31:38,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765904592] [2021-11-13 18:31:38,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:31:38,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:31:38,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:31:38,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:31:38,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:31:38,943 INFO L87 Difference]: Start difference. First operand 1631 states and 2107 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (23), 4 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-13 18:31:40,984 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:31:43,259 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:31:45,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:31:45,892 INFO L93 Difference]: Finished difference Result 1631 states and 2107 transitions. [2021-11-13 18:31:45,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:31:45,895 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (23), 4 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 144 [2021-11-13 18:31:45,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:31:45,900 INFO L225 Difference]: With dead ends: 1631 [2021-11-13 18:31:45,901 INFO L226 Difference]: Without dead ends: 1629 [2021-11-13 18:31:45,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:31:45,902 INFO L933 BasicCegarLoop]: 1058 mSDtfsCounter, 1540 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 876 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5794.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1668 SdHoareTripleChecker+Valid, 2329 SdHoareTripleChecker+Invalid, 1739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.70ms SdHoareTripleChecker+Time, 876 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6685.64ms IncrementalHoareTripleChecker+Time [2021-11-13 18:31:45,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1668 Valid, 2329 Invalid, 1739 Unknown, 0 Unchecked, 16.70ms Time], IncrementalHoareTripleChecker [876 Valid, 861 Invalid, 2 Unknown, 0 Unchecked, 6685.64ms Time] [2021-11-13 18:31:45,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2021-11-13 18:31:46,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1629. [2021-11-13 18:31:46,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1629 states, 1049 states have (on average 1.1630123927550047) internal successors, (1220), 1086 states have internal predecessors, (1220), 443 states have call successors, (443), 130 states have call predecessors, (443), 127 states have return successors, (442), 434 states have call predecessors, (442), 441 states have call successors, (442) [2021-11-13 18:31:46,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 2105 transitions. [2021-11-13 18:31:46,067 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 2105 transitions. Word has length 144 [2021-11-13 18:31:46,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:31:46,068 INFO L470 AbstractCegarLoop]: Abstraction has 1629 states and 2105 transitions. [2021-11-13 18:31:46,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (23), 4 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-13 18:31:46,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 2105 transitions. [2021-11-13 18:31:46,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-13 18:31:46,071 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:31:46,072 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-13 18:31:46,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-13 18:31:46,072 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_linux_mmc_sdio_func_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:31:46,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:31:46,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1382898488, now seen corresponding path program 1 times [2021-11-13 18:31:46,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:31:46,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84815446] [2021-11-13 18:31:46,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:31:46,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:31:46,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:46,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:31:46,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:46,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 18:31:46,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:46,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 18:31:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:46,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:31:46,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:46,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 18:31:46,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:46,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-13 18:31:46,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:46,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:31:46,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:46,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-13 18:31:46,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:46,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:31:46,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:46,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 18:31:46,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:46,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-13 18:31:46,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:46,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-13 18:31:46,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:46,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-13 18:31:46,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:46,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-13 18:31:46,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:46,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-13 18:31:46,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:46,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 18:31:46,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:46,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-13 18:31:46,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:46,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-13 18:31:46,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:46,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-13 18:31:46,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:46,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-13 18:31:46,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:46,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-13 18:31:46,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:46,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-13 18:31:46,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:46,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-13 18:31:46,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:46,481 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 18:31:46,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:31:46,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84815446] [2021-11-13 18:31:46,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84815446] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:31:46,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:31:46,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:31:46,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185665510] [2021-11-13 18:31:46,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:31:46,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:31:46,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:31:46,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:31:46,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:31:46,487 INFO L87 Difference]: Start difference. First operand 1629 states and 2105 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-13 18:31:48,535 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:31:50,800 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:31:53,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:31:53,278 INFO L93 Difference]: Finished difference Result 1629 states and 2105 transitions. [2021-11-13 18:31:53,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:31:53,279 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 150 [2021-11-13 18:31:53,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:31:53,287 INFO L225 Difference]: With dead ends: 1629 [2021-11-13 18:31:53,287 INFO L226 Difference]: Without dead ends: 1627 [2021-11-13 18:31:53,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:31:53,289 INFO L933 BasicCegarLoop]: 1056 mSDtfsCounter, 1534 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 876 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5735.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1661 SdHoareTripleChecker+Valid, 2327 SdHoareTripleChecker+Invalid, 1737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.72ms SdHoareTripleChecker+Time, 876 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6562.35ms IncrementalHoareTripleChecker+Time [2021-11-13 18:31:53,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1661 Valid, 2327 Invalid, 1737 Unknown, 0 Unchecked, 15.72ms Time], IncrementalHoareTripleChecker [876 Valid, 859 Invalid, 2 Unknown, 0 Unchecked, 6562.35ms Time] [2021-11-13 18:31:53,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2021-11-13 18:31:53,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 1627. [2021-11-13 18:31:53,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1627 states, 1048 states have (on average 1.1622137404580153) internal successors, (1218), 1084 states have internal predecessors, (1218), 443 states have call successors, (443), 130 states have call predecessors, (443), 127 states have return successors, (442), 434 states have call predecessors, (442), 441 states have call successors, (442) [2021-11-13 18:31:53,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1627 states to 1627 states and 2103 transitions. [2021-11-13 18:31:53,479 INFO L78 Accepts]: Start accepts. Automaton has 1627 states and 2103 transitions. Word has length 150 [2021-11-13 18:31:53,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:31:53,479 INFO L470 AbstractCegarLoop]: Abstraction has 1627 states and 2103 transitions. [2021-11-13 18:31:53,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-13 18:31:53,480 INFO L276 IsEmpty]: Start isEmpty. Operand 1627 states and 2103 transitions. [2021-11-13 18:31:53,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-13 18:31:53,483 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:31:53,483 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-13 18:31:53,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-13 18:31:53,484 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_linux_net_rtnetlink_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:31:53,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:31:53,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1820291379, now seen corresponding path program 1 times [2021-11-13 18:31:53,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:31:53,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302674564] [2021-11-13 18:31:53,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:31:53,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:31:53,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:53,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:31:53,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:53,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 18:31:53,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:53,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 18:31:53,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:53,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:31:53,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:53,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 18:31:53,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:53,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-13 18:31:53,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:53,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:31:53,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:53,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-13 18:31:53,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:53,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:31:53,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:53,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 18:31:53,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:53,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-13 18:31:53,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:53,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-13 18:31:53,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:53,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-13 18:31:53,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:53,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-13 18:31:53,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:53,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-13 18:31:53,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:53,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 18:31:53,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:53,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-13 18:31:53,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:53,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-13 18:31:53,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:53,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-13 18:31:53,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:53,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-13 18:31:53,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:53,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-13 18:31:53,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:53,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-13 18:31:53,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:53,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-13 18:31:53,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:53,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-13 18:31:53,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:53,877 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 18:31:53,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:31:53,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302674564] [2021-11-13 18:31:53,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302674564] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:31:53,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:31:53,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:31:53,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286399010] [2021-11-13 18:31:53,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:31:53,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:31:53,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:31:53,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:31:53,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:31:53,880 INFO L87 Difference]: Start difference. First operand 1627 states and 2103 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (25), 4 states have call predecessors, (25), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-13 18:31:55,915 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:31:58,194 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:32:00,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:32:00,753 INFO L93 Difference]: Finished difference Result 1627 states and 2103 transitions. [2021-11-13 18:32:00,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:32:00,755 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (25), 4 states have call predecessors, (25), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 156 [2021-11-13 18:32:00,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:32:00,761 INFO L225 Difference]: With dead ends: 1627 [2021-11-13 18:32:00,761 INFO L226 Difference]: Without dead ends: 1625 [2021-11-13 18:32:00,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:32:00,762 INFO L933 BasicCegarLoop]: 1054 mSDtfsCounter, 1528 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 876 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5771.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1654 SdHoareTripleChecker+Valid, 2325 SdHoareTripleChecker+Invalid, 1735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.64ms SdHoareTripleChecker+Time, 876 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6631.74ms IncrementalHoareTripleChecker+Time [2021-11-13 18:32:00,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1654 Valid, 2325 Invalid, 1735 Unknown, 0 Unchecked, 15.64ms Time], IncrementalHoareTripleChecker [876 Valid, 857 Invalid, 2 Unknown, 0 Unchecked, 6631.74ms Time] [2021-11-13 18:32:00,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1625 states. [2021-11-13 18:32:00,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1625 to 1625. [2021-11-13 18:32:00,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1625 states, 1047 states have (on average 1.1614135625596944) internal successors, (1216), 1082 states have internal predecessors, (1216), 443 states have call successors, (443), 130 states have call predecessors, (443), 127 states have return successors, (442), 434 states have call predecessors, (442), 441 states have call successors, (442) [2021-11-13 18:32:01,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1625 states to 1625 states and 2101 transitions. [2021-11-13 18:32:01,008 INFO L78 Accepts]: Start accepts. Automaton has 1625 states and 2101 transitions. Word has length 156 [2021-11-13 18:32:01,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:32:01,009 INFO L470 AbstractCegarLoop]: Abstraction has 1625 states and 2101 transitions. [2021-11-13 18:32:01,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (25), 4 states have call predecessors, (25), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-13 18:32:01,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1625 states and 2101 transitions. [2021-11-13 18:32:01,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-13 18:32:01,012 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:32:01,013 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-13 18:32:01,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-13 18:32:01,013 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_linux_net_sock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:32:01,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:32:01,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1658758885, now seen corresponding path program 1 times [2021-11-13 18:32:01,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:32:01,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582263315] [2021-11-13 18:32:01,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:32:01,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:32:01,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:01,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:32:01,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:01,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 18:32:01,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:01,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 18:32:01,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:01,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:32:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:01,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 18:32:01,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:01,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-13 18:32:01,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:01,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:32:01,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:01,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-13 18:32:01,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:01,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:32:01,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:01,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 18:32:01,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:01,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-13 18:32:01,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:01,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-13 18:32:01,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:01,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-13 18:32:01,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:01,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-13 18:32:01,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:01,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-13 18:32:01,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:01,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 18:32:01,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:01,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-13 18:32:01,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:01,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-13 18:32:01,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:01,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-13 18:32:01,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:01,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-13 18:32:01,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:01,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-13 18:32:01,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:01,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-13 18:32:01,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:01,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-13 18:32:01,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:01,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-13 18:32:01,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:01,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-13 18:32:01,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:01,383 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 18:32:01,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:32:01,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582263315] [2021-11-13 18:32:01,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582263315] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:32:01,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:32:01,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:32:01,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002217494] [2021-11-13 18:32:01,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:32:01,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:32:01,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:32:01,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:32:01,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:32:01,387 INFO L87 Difference]: Start difference. First operand 1625 states and 2101 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (26), 4 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-13 18:32:03,438 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:32:05,693 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:32:08,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:32:08,205 INFO L93 Difference]: Finished difference Result 1625 states and 2101 transitions. [2021-11-13 18:32:08,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:32:08,205 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (26), 4 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 162 [2021-11-13 18:32:08,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:32:08,211 INFO L225 Difference]: With dead ends: 1625 [2021-11-13 18:32:08,211 INFO L226 Difference]: Without dead ends: 1623 [2021-11-13 18:32:08,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:32:08,213 INFO L933 BasicCegarLoop]: 1052 mSDtfsCounter, 1522 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 876 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5795.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1647 SdHoareTripleChecker+Valid, 2323 SdHoareTripleChecker+Invalid, 1733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.30ms SdHoareTripleChecker+Time, 876 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6583.43ms IncrementalHoareTripleChecker+Time [2021-11-13 18:32:08,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1647 Valid, 2323 Invalid, 1733 Unknown, 0 Unchecked, 15.30ms Time], IncrementalHoareTripleChecker [876 Valid, 855 Invalid, 2 Unknown, 0 Unchecked, 6583.43ms Time] [2021-11-13 18:32:08,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2021-11-13 18:32:08,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 1623. [2021-11-13 18:32:08,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1623 states, 1046 states have (on average 1.1606118546845123) internal successors, (1214), 1080 states have internal predecessors, (1214), 443 states have call successors, (443), 130 states have call predecessors, (443), 127 states have return successors, (442), 434 states have call predecessors, (442), 441 states have call successors, (442) [2021-11-13 18:32:08,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1623 states to 1623 states and 2099 transitions. [2021-11-13 18:32:08,378 INFO L78 Accepts]: Start accepts. Automaton has 1623 states and 2099 transitions. Word has length 162 [2021-11-13 18:32:08,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:32:08,379 INFO L470 AbstractCegarLoop]: Abstraction has 1623 states and 2099 transitions. [2021-11-13 18:32:08,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (26), 4 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-13 18:32:08,379 INFO L276 IsEmpty]: Start isEmpty. Operand 1623 states and 2099 transitions. [2021-11-13 18:32:08,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-13 18:32:08,382 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:32:08,382 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-13 18:32:08,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-13 18:32:08,383 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:32:08,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:32:08,384 INFO L85 PathProgramCache]: Analyzing trace with hash 243227707, now seen corresponding path program 1 times [2021-11-13 18:32:08,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:32:08,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583070467] [2021-11-13 18:32:08,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:32:08,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:32:08,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:08,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:32:08,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:08,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 18:32:08,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:08,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 18:32:08,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:08,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:32:08,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:08,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 18:32:08,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:08,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-13 18:32:08,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:08,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:32:08,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:08,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-13 18:32:08,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:08,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:32:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:08,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 18:32:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:08,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-13 18:32:08,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:08,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-13 18:32:08,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:08,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-13 18:32:08,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:08,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-13 18:32:08,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:08,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-13 18:32:08,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:08,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 18:32:08,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:08,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-13 18:32:08,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:08,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-13 18:32:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:08,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-13 18:32:08,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:08,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-13 18:32:08,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:08,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-13 18:32:08,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:08,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-13 18:32:08,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:08,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-13 18:32:08,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:08,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-13 18:32:08,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:08,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-13 18:32:08,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:08,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-13 18:32:08,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:08,755 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 18:32:08,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:32:08,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583070467] [2021-11-13 18:32:08,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583070467] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:32:08,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:32:08,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:32:08,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193970552] [2021-11-13 18:32:08,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:32:08,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:32:08,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:32:08,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:32:08,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:32:08,761 INFO L87 Difference]: Start difference. First operand 1623 states and 2099 transitions. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (27), 4 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-13 18:32:10,799 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:32:13,076 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:32:15,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:32:15,563 INFO L93 Difference]: Finished difference Result 1623 states and 2099 transitions. [2021-11-13 18:32:15,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:32:15,564 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (27), 4 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 168 [2021-11-13 18:32:15,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:32:15,569 INFO L225 Difference]: With dead ends: 1623 [2021-11-13 18:32:15,569 INFO L226 Difference]: Without dead ends: 1621 [2021-11-13 18:32:15,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:32:15,571 INFO L933 BasicCegarLoop]: 1050 mSDtfsCounter, 1516 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 876 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5727.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1640 SdHoareTripleChecker+Valid, 2321 SdHoareTripleChecker+Invalid, 1731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.63ms SdHoareTripleChecker+Time, 876 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6560.46ms IncrementalHoareTripleChecker+Time [2021-11-13 18:32:15,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1640 Valid, 2321 Invalid, 1731 Unknown, 0 Unchecked, 15.63ms Time], IncrementalHoareTripleChecker [876 Valid, 853 Invalid, 2 Unknown, 0 Unchecked, 6560.46ms Time] [2021-11-13 18:32:15,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1621 states. [2021-11-13 18:32:15,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1621 to 1621. [2021-11-13 18:32:15,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1621 states, 1045 states have (on average 1.1598086124401914) internal successors, (1212), 1078 states have internal predecessors, (1212), 443 states have call successors, (443), 130 states have call predecessors, (443), 127 states have return successors, (442), 434 states have call predecessors, (442), 441 states have call successors, (442) [2021-11-13 18:32:15,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1621 states to 1621 states and 2097 transitions. [2021-11-13 18:32:15,786 INFO L78 Accepts]: Start accepts. Automaton has 1621 states and 2097 transitions. Word has length 168 [2021-11-13 18:32:15,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:32:15,787 INFO L470 AbstractCegarLoop]: Abstraction has 1621 states and 2097 transitions. [2021-11-13 18:32:15,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (27), 4 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-13 18:32:15,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1621 states and 2097 transitions. [2021-11-13 18:32:15,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-13 18:32:15,791 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:32:15,791 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:32:15,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-13 18:32:15,792 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_linux_arch_io_io_mem_unmapErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:32:15,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:32:15,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1956759216, now seen corresponding path program 1 times [2021-11-13 18:32:15,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:32:15,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891605807] [2021-11-13 18:32:15,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:32:15,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:32:15,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:16,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:32:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:16,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 18:32:16,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:16,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 18:32:16,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:16,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-13 18:32:16,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:16,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:32:16,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:16,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:32:16,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:16,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:32:16,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:16,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 18:32:16,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:16,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:32:16,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:16,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:32:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:16,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:32:16,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:16,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-13 18:32:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:16,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:32:16,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:16,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:32:16,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:16,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:32:16,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:16,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-13 18:32:16,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:16,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-13 18:32:16,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:16,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 18:32:16,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:16,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-13 18:32:16,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:16,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:32:16,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:16,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:32:16,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:16,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 18:32:16,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:16,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:32:16,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:16,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-13 18:32:16,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:16,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-13 18:32:16,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:16,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:32:16,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:16,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:32:16,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:16,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 18:32:16,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:16,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:32:16,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:16,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-13 18:32:16,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:16,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-11-13 18:32:16,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:16,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:32:16,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:16,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:32:16,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:16,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-11-13 18:32:16,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:16,577 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2021-11-13 18:32:16,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:32:16,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891605807] [2021-11-13 18:32:16,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891605807] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:32:16,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:32:16,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-13 18:32:16,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347172057] [2021-11-13 18:32:16,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:32:16,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 18:32:16,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:32:16,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 18:32:16,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-11-13 18:32:16,581 INFO L87 Difference]: Start difference. First operand 1621 states and 2097 transitions. Second operand has 13 states, 12 states have (on average 6.916666666666667) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (24), 7 states have call predecessors, (24), 2 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-13 18:32:18,623 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:32:20,917 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:32:23,239 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:32:25,482 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:32:27,932 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.45s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:32:30,301 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:32:32,561 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:32:34,827 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:32:47,077 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:32:52,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:32:52,354 INFO L93 Difference]: Finished difference Result 2815 states and 3640 transitions. [2021-11-13 18:32:52,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-13 18:32:52,356 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.916666666666667) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (24), 7 states have call predecessors, (24), 2 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 217 [2021-11-13 18:32:52,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:32:52,367 INFO L225 Difference]: With dead ends: 2815 [2021-11-13 18:32:52,367 INFO L226 Difference]: Without dead ends: 2813 [2021-11-13 18:32:52,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=368, Invalid=1114, Unknown=0, NotChecked=0, Total=1482 [2021-11-13 18:32:52,371 INFO L933 BasicCegarLoop]: 1997 mSDtfsCounter, 6131 mSDsluCounter, 5140 mSDsCounter, 0 mSdLazyCounter, 8794 mSolverCounterSat, 5320 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30333.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6419 SdHoareTripleChecker+Valid, 7137 SdHoareTripleChecker+Invalid, 14122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 103.95ms SdHoareTripleChecker+Time, 5320 IncrementalHoareTripleChecker+Valid, 8794 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34556.61ms IncrementalHoareTripleChecker+Time [2021-11-13 18:32:52,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6419 Valid, 7137 Invalid, 14122 Unknown, 0 Unchecked, 103.95ms Time], IncrementalHoareTripleChecker [5320 Valid, 8794 Invalid, 8 Unknown, 0 Unchecked, 34556.61ms Time] [2021-11-13 18:32:52,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2813 states. [2021-11-13 18:32:52,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2813 to 2343. [2021-11-13 18:32:52,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2343 states, 1512 states have (on average 1.164021164021164) internal successors, (1760), 1561 states have internal predecessors, (1760), 642 states have call successors, (642), 185 states have call predecessors, (642), 183 states have return successors, (642), 628 states have call predecessors, (642), 640 states have call successors, (642) [2021-11-13 18:32:52,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2343 states to 2343 states and 3044 transitions. [2021-11-13 18:32:52,758 INFO L78 Accepts]: Start accepts. Automaton has 2343 states and 3044 transitions. Word has length 217 [2021-11-13 18:32:52,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:32:52,759 INFO L470 AbstractCegarLoop]: Abstraction has 2343 states and 3044 transitions. [2021-11-13 18:32:52,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.916666666666667) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (24), 7 states have call predecessors, (24), 2 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-13 18:32:52,759 INFO L276 IsEmpty]: Start isEmpty. Operand 2343 states and 3044 transitions. [2021-11-13 18:32:52,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-13 18:32:52,763 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:32:52,763 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:32:52,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-13 18:32:52,764 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_linux_arch_io_io_mem_unmapErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:32:52,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:32:52,765 INFO L85 PathProgramCache]: Analyzing trace with hash -603449519, now seen corresponding path program 1 times [2021-11-13 18:32:52,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:32:52,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584620555] [2021-11-13 18:32:52,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:32:52,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:32:52,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:53,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:32:53,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:53,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 18:32:53,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:53,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 18:32:53,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:53,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-13 18:32:53,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:53,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:32:53,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:53,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:32:53,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:53,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:32:53,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:53,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 18:32:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:53,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:32:53,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:53,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:32:53,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:53,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:32:53,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:53,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-13 18:32:53,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:53,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:32:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:53,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:32:53,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:53,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:32:53,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:53,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-13 18:32:53,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:53,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-13 18:32:53,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:53,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 18:32:53,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:53,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-13 18:32:53,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:53,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:32:53,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:53,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:32:53,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:53,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 18:32:53,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:53,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:32:53,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:53,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-13 18:32:53,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:53,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-13 18:32:53,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:53,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:32:53,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:53,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:32:53,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:53,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 18:32:53,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:53,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:32:53,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:53,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-13 18:32:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:53,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-11-13 18:32:53,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:53,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:32:53,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:53,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:32:53,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:53,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-11-13 18:32:53,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:53,779 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2021-11-13 18:32:53,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:32:53,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584620555] [2021-11-13 18:32:53,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584620555] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:32:53,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196410859] [2021-11-13 18:32:53,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:32:53,781 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:32:53,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:32:53,783 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:32:53,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-13 18:33:15,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:15,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 2012 conjuncts, 45 conjunts are in the unsatisfiable core [2021-11-13 18:33:15,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:33:15,944 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2021-11-13 18:33:15,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:33:15,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196410859] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:33:15,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:33:15,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [15] total 15 [2021-11-13 18:33:15,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066657621] [2021-11-13 18:33:15,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:33:15,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 18:33:15,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:33:15,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 18:33:15,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2021-11-13 18:33:15,947 INFO L87 Difference]: Start difference. First operand 2343 states and 3044 transitions. Second operand has 10 states, 10 states have (on average 10.9) internal successors, (109), 8 states have internal predecessors, (109), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (28), 5 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-13 18:33:17,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:33:17,719 INFO L93 Difference]: Finished difference Result 4995 states and 6547 transitions. [2021-11-13 18:33:17,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 18:33:17,720 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 8 states have internal predecessors, (109), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (28), 5 states have call predecessors, (28), 3 states have call successors, (28) Word has length 217 [2021-11-13 18:33:17,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:33:17,734 INFO L225 Difference]: With dead ends: 4995 [2021-11-13 18:33:17,734 INFO L226 Difference]: Without dead ends: 2673 [2021-11-13 18:33:17,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 282 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2021-11-13 18:33:17,745 INFO L933 BasicCegarLoop]: 1287 mSDtfsCounter, 80 mSDsluCounter, 10170 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1065.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 11457 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.00ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1118.27ms IncrementalHoareTripleChecker+Time [2021-11-13 18:33:17,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 11457 Invalid, 86 Unknown, 0 Unchecked, 25.00ms Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 1118.27ms Time] [2021-11-13 18:33:17,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2673 states. [2021-11-13 18:33:18,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2673 to 2376. [2021-11-13 18:33:18,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2376 states, 1536 states have (on average 1.1614583333333333) internal successors, (1784), 1585 states have internal predecessors, (1784), 645 states have call successors, (645), 185 states have call predecessors, (645), 189 states have return successors, (657), 637 states have call predecessors, (657), 643 states have call successors, (657) [2021-11-13 18:33:18,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2376 states to 2376 states and 3086 transitions. [2021-11-13 18:33:18,089 INFO L78 Accepts]: Start accepts. Automaton has 2376 states and 3086 transitions. Word has length 217 [2021-11-13 18:33:18,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:33:18,090 INFO L470 AbstractCegarLoop]: Abstraction has 2376 states and 3086 transitions. [2021-11-13 18:33:18,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 8 states have internal predecessors, (109), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (28), 5 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-13 18:33:18,091 INFO L276 IsEmpty]: Start isEmpty. Operand 2376 states and 3086 transitions. [2021-11-13 18:33:18,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-13 18:33:18,094 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:33:18,094 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-13 18:33:18,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-13 18:33:18,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-13 18:33:18,311 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:33:18,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:33:18,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1556419733, now seen corresponding path program 1 times [2021-11-13 18:33:18,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:33:18,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246774090] [2021-11-13 18:33:18,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:33:18,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:33:18,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:18,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:33:18,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:18,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 18:33:18,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:18,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 18:33:18,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:18,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:33:18,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:18,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 18:33:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:18,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-13 18:33:18,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:18,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:33:18,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:18,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-13 18:33:18,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:18,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:33:18,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:18,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 18:33:18,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:18,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-13 18:33:18,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:18,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-13 18:33:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:18,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-13 18:33:18,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:18,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-13 18:33:18,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:18,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-13 18:33:18,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:18,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 18:33:18,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:18,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-13 18:33:18,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:18,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-13 18:33:18,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:18,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-13 18:33:18,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:18,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-13 18:33:18,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:18,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-13 18:33:18,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:18,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-13 18:33:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:18,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-13 18:33:18,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:18,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-13 18:33:18,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:18,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-13 18:33:18,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:18,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-13 18:33:18,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:18,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-11-13 18:33:18,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:18,743 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 18:33:18,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:33:18,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246774090] [2021-11-13 18:33:18,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246774090] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:33:18,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:33:18,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:33:18,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140723843] [2021-11-13 18:33:18,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:33:18,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:33:18,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:33:18,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:33:18,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:33:18,747 INFO L87 Difference]: Start difference. First operand 2376 states and 3086 transitions. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (28), 4 states have call predecessors, (28), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-13 18:33:20,800 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:33:23,081 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:33:25,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:33:25,970 INFO L93 Difference]: Finished difference Result 2376 states and 3086 transitions. [2021-11-13 18:33:25,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:33:25,971 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (28), 4 states have call predecessors, (28), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 174 [2021-11-13 18:33:25,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:33:25,981 INFO L225 Difference]: With dead ends: 2376 [2021-11-13 18:33:25,981 INFO L226 Difference]: Without dead ends: 2374 [2021-11-13 18:33:25,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:33:25,984 INFO L933 BasicCegarLoop]: 1048 mSDtfsCounter, 1510 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 876 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5882.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1633 SdHoareTripleChecker+Valid, 2319 SdHoareTripleChecker+Invalid, 1729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.64ms SdHoareTripleChecker+Time, 876 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6830.25ms IncrementalHoareTripleChecker+Time [2021-11-13 18:33:25,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1633 Valid, 2319 Invalid, 1729 Unknown, 0 Unchecked, 18.64ms Time], IncrementalHoareTripleChecker [876 Valid, 851 Invalid, 2 Unknown, 0 Unchecked, 6830.25ms Time] [2021-11-13 18:33:25,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2374 states. [2021-11-13 18:33:26,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2374 to 2374. [2021-11-13 18:33:26,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2374 states, 1535 states have (on average 1.1609120521172638) internal successors, (1782), 1583 states have internal predecessors, (1782), 645 states have call successors, (645), 185 states have call predecessors, (645), 189 states have return successors, (657), 637 states have call predecessors, (657), 643 states have call successors, (657) [2021-11-13 18:33:26,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 3084 transitions. [2021-11-13 18:33:26,397 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 3084 transitions. Word has length 174 [2021-11-13 18:33:26,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:33:26,397 INFO L470 AbstractCegarLoop]: Abstraction has 2374 states and 3084 transitions. [2021-11-13 18:33:26,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (28), 4 states have call predecessors, (28), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-13 18:33:26,398 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 3084 transitions. [2021-11-13 18:33:26,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-13 18:33:26,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:33:26,401 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-13 18:33:26,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-13 18:33:26,402 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_linux_usb_urb_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:33:26,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:33:26,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1014118561, now seen corresponding path program 1 times [2021-11-13 18:33:26,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:33:26,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439223408] [2021-11-13 18:33:26,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:33:26,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:33:26,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:26,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:33:26,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:26,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 18:33:26,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:26,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 18:33:26,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:26,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:33:26,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:26,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 18:33:26,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:26,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-13 18:33:26,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:26,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:33:26,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:26,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-13 18:33:26,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:26,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:33:26,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:26,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 18:33:26,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:26,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-13 18:33:26,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:26,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-13 18:33:26,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:26,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-13 18:33:26,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:26,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-13 18:33:26,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:26,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-13 18:33:26,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:26,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 18:33:26,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:26,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-13 18:33:26,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:26,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-13 18:33:26,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:26,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-13 18:33:26,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:26,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-13 18:33:26,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:26,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-13 18:33:26,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:26,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-13 18:33:26,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:26,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-13 18:33:26,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:26,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-13 18:33:26,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:26,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-13 18:33:26,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:26,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-13 18:33:26,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:26,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-11-13 18:33:26,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:26,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-11-13 18:33:26,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:26,812 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 18:33:26,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:33:26,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439223408] [2021-11-13 18:33:26,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439223408] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:33:26,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:33:26,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:33:26,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162208751] [2021-11-13 18:33:26,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:33:26,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:33:26,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:33:26,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:33:26,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:33:26,816 INFO L87 Difference]: Start difference. First operand 2374 states and 3084 transitions. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (29), 4 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-13 18:33:28,863 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:33:31,180 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:33:33,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:33:33,809 INFO L93 Difference]: Finished difference Result 2374 states and 3084 transitions. [2021-11-13 18:33:33,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:33:33,811 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (29), 4 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 180 [2021-11-13 18:33:33,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:33:33,819 INFO L225 Difference]: With dead ends: 2374 [2021-11-13 18:33:33,819 INFO L226 Difference]: Without dead ends: 2199 [2021-11-13 18:33:33,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:33:33,823 INFO L933 BasicCegarLoop]: 1047 mSDtfsCounter, 1501 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 876 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5744.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1623 SdHoareTripleChecker+Valid, 2318 SdHoareTripleChecker+Invalid, 1729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.79ms SdHoareTripleChecker+Time, 876 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6666.26ms IncrementalHoareTripleChecker+Time [2021-11-13 18:33:33,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1623 Valid, 2318 Invalid, 1729 Unknown, 0 Unchecked, 16.79ms Time], IncrementalHoareTripleChecker [876 Valid, 851 Invalid, 2 Unknown, 0 Unchecked, 6666.26ms Time] [2021-11-13 18:33:33,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2199 states. [2021-11-13 18:33:34,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2199 to 2199. [2021-11-13 18:33:34,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2199 states, 1430 states have (on average 1.1699300699300699) internal successors, (1673), 1475 states have internal predecessors, (1673), 596 states have call successors, (596), 165 states have call predecessors, (596), 169 states have return successors, (608), 590 states have call predecessors, (608), 594 states have call successors, (608) [2021-11-13 18:33:34,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2199 states to 2199 states and 2877 transitions. [2021-11-13 18:33:34,118 INFO L78 Accepts]: Start accepts. Automaton has 2199 states and 2877 transitions. Word has length 180 [2021-11-13 18:33:34,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:33:34,118 INFO L470 AbstractCegarLoop]: Abstraction has 2199 states and 2877 transitions. [2021-11-13 18:33:34,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (29), 4 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-13 18:33:34,119 INFO L276 IsEmpty]: Start isEmpty. Operand 2199 states and 2877 transitions. [2021-11-13 18:33:34,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-13 18:33:34,121 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:33:34,122 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:33:34,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-13 18:33:34,122 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_linux_arch_io_io_mem_unmapErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:33:34,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:33:34,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1967152555, now seen corresponding path program 1 times [2021-11-13 18:33:34,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:33:34,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901393330] [2021-11-13 18:33:34,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:33:34,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:33:34,191 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:33:34,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1720874878] [2021-11-13 18:33:34,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:33:34,192 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:33:34,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:33:34,198 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:33:34,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-13 18:33:47,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:47,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 2079 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-13 18:33:47,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:33:48,119 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2021-11-13 18:33:48,119 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:33:48,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:33:48,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901393330] [2021-11-13 18:33:48,120 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:33:48,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720874878] [2021-11-13 18:33:48,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720874878] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:33:48,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:33:48,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 18:33:48,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254504170] [2021-11-13 18:33:48,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:33:48,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 18:33:48,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:33:48,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 18:33:48,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:33:48,123 INFO L87 Difference]: Start difference. First operand 2199 states and 2877 transitions. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 7 states have internal predecessors, (89), 2 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (27), 4 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-13 18:33:48,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:33:48,737 INFO L93 Difference]: Finished difference Result 4682 states and 6176 transitions. [2021-11-13 18:33:48,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:33:48,738 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 7 states have internal predecessors, (89), 2 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (27), 4 states have call predecessors, (27), 2 states have call successors, (27) Word has length 238 [2021-11-13 18:33:48,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:33:48,751 INFO L225 Difference]: With dead ends: 4682 [2021-11-13 18:33:48,751 INFO L226 Difference]: Without dead ends: 2502 [2021-11-13 18:33:48,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:33:48,763 INFO L933 BasicCegarLoop]: 1130 mSDtfsCounter, 87 mSDsluCounter, 7784 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 8914 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.08ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 84.94ms IncrementalHoareTripleChecker+Time [2021-11-13 18:33:48,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 8914 Invalid, 52 Unknown, 0 Unchecked, 16.08ms Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 84.94ms Time] [2021-11-13 18:33:48,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2502 states. [2021-11-13 18:33:49,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2502 to 2226. [2021-11-13 18:33:49,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2226 states, 1451 states have (on average 1.1674707098552721) internal successors, (1694), 1496 states have internal predecessors, (1694), 596 states have call successors, (596), 165 states have call predecessors, (596), 175 states have return successors, (617), 596 states have call predecessors, (617), 594 states have call successors, (617) [2021-11-13 18:33:49,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2226 states to 2226 states and 2907 transitions. [2021-11-13 18:33:49,102 INFO L78 Accepts]: Start accepts. Automaton has 2226 states and 2907 transitions. Word has length 238 [2021-11-13 18:33:49,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:33:49,103 INFO L470 AbstractCegarLoop]: Abstraction has 2226 states and 2907 transitions. [2021-11-13 18:33:49,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 7 states have internal predecessors, (89), 2 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (27), 4 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-13 18:33:49,104 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states and 2907 transitions. [2021-11-13 18:33:49,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-13 18:33:49,107 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:33:49,107 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:33:49,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-13 18:33:49,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-13 18:33:49,323 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:33:49,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:33:49,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1149569618, now seen corresponding path program 1 times [2021-11-13 18:33:49,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:33:49,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124939807] [2021-11-13 18:33:49,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:33:49,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:33:49,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:49,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:33:49,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:49,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 18:33:49,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:49,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 18:33:49,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:49,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-13 18:33:49,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:49,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:33:49,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:49,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:33:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:49,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:33:49,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:49,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 18:33:49,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:49,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:33:49,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:49,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:33:49,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:49,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:33:49,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:49,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-13 18:33:49,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:49,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:33:49,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:49,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:33:49,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:49,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:33:49,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:49,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-13 18:33:49,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:49,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-13 18:33:49,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:49,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 18:33:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:49,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-13 18:33:49,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:49,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:33:49,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:49,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:33:49,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:49,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 18:33:49,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:49,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:33:49,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:49,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-13 18:33:49,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:49,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-11-13 18:33:49,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:49,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-11-13 18:33:49,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:49,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-13 18:33:49,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:49,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:33:49,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:49,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-11-13 18:33:49,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:49,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-11-13 18:33:49,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:49,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-13 18:33:49,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:49,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-11-13 18:33:49,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:49,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:33:49,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:49,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:33:49,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:49,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-11-13 18:33:49,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:49,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:33:49,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:49,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:33:49,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:49,973 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 353 trivial. 0 not checked. [2021-11-13 18:33:49,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:33:49,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124939807] [2021-11-13 18:33:49,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124939807] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:33:49,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:33:49,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 18:33:49,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807563875] [2021-11-13 18:33:49,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:33:49,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 18:33:49,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:33:49,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 18:33:49,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:33:49,976 INFO L87 Difference]: Start difference. First operand 2226 states and 2907 transitions. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (31), 7 states have call predecessors, (31), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-13 18:33:52,024 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:33:54,330 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:33:56,659 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:34:00,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:34:00,532 INFO L93 Difference]: Finished difference Result 2355 states and 3104 transitions. [2021-11-13 18:34:00,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 18:34:00,534 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (31), 7 states have call predecessors, (31), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 235 [2021-11-13 18:34:00,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:34:00,542 INFO L225 Difference]: With dead ends: 2355 [2021-11-13 18:34:00,543 INFO L226 Difference]: Without dead ends: 2353 [2021-11-13 18:34:00,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2021-11-13 18:34:00,545 INFO L933 BasicCegarLoop]: 878 mSDtfsCounter, 1706 mSDsluCounter, 2095 mSDsCounter, 0 mSdLazyCounter, 1429 mSolverCounterSat, 1486 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8674.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1803 SdHoareTripleChecker+Valid, 2973 SdHoareTripleChecker+Invalid, 2918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.23ms SdHoareTripleChecker+Time, 1486 IncrementalHoareTripleChecker+Valid, 1429 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10048.50ms IncrementalHoareTripleChecker+Time [2021-11-13 18:34:00,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1803 Valid, 2973 Invalid, 2918 Unknown, 0 Unchecked, 27.23ms Time], IncrementalHoareTripleChecker [1486 Valid, 1429 Invalid, 3 Unknown, 0 Unchecked, 10048.50ms Time] [2021-11-13 18:34:00,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2353 states. [2021-11-13 18:34:00,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2353 to 2242. [2021-11-13 18:34:00,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2242 states, 1462 states have (on average 1.1641586867305063) internal successors, (1702), 1506 states have internal predecessors, (1702), 596 states have call successors, (596), 171 states have call predecessors, (596), 181 states have return successors, (617), 596 states have call predecessors, (617), 594 states have call successors, (617) [2021-11-13 18:34:00,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2242 states to 2242 states and 2915 transitions. [2021-11-13 18:34:00,906 INFO L78 Accepts]: Start accepts. Automaton has 2242 states and 2915 transitions. Word has length 235 [2021-11-13 18:34:00,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:34:00,907 INFO L470 AbstractCegarLoop]: Abstraction has 2242 states and 2915 transitions. [2021-11-13 18:34:00,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (31), 7 states have call predecessors, (31), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-13 18:34:00,907 INFO L276 IsEmpty]: Start isEmpty. Operand 2242 states and 2915 transitions. [2021-11-13 18:34:00,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2021-11-13 18:34:00,911 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:34:00,911 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:34:00,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-13 18:34:00,912 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_linux_arch_io_io_mem_unmapErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:34:00,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:34:00,912 INFO L85 PathProgramCache]: Analyzing trace with hash -2118923019, now seen corresponding path program 1 times [2021-11-13 18:34:00,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:34:00,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759937239] [2021-11-13 18:34:00,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:34:00,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:34:00,976 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:34:00,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1200909788] [2021-11-13 18:34:00,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:34:00,977 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:34:00,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:34:00,983 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:34:01,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-13 18:34:16,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:16,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 2194 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-13 18:34:16,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:34:17,819 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 209 proven. 3 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2021-11-13 18:34:17,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:34:19,290 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 6 proven. 45 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2021-11-13 18:34:19,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:34:19,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759937239] [2021-11-13 18:34:19,290 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:34:19,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200909788] [2021-11-13 18:34:19,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200909788] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:34:19,291 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:34:19,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2021-11-13 18:34:19,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844906374] [2021-11-13 18:34:19,291 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:34:19,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-13 18:34:19,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:34:19,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-13 18:34:19,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-13 18:34:19,293 INFO L87 Difference]: Start difference. First operand 2242 states and 2915 transitions. Second operand has 14 states, 13 states have (on average 12.307692307692308) internal successors, (160), 12 states have internal predecessors, (160), 5 states have call successors, (62), 2 states have call predecessors, (62), 5 states have return successors, (63), 6 states have call predecessors, (63), 5 states have call successors, (63) [2021-11-13 18:34:20,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:34:20,227 INFO L93 Difference]: Finished difference Result 4469 states and 5809 transitions. [2021-11-13 18:34:20,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:34:20,228 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 12.307692307692308) internal successors, (160), 12 states have internal predecessors, (160), 5 states have call successors, (62), 2 states have call predecessors, (62), 5 states have return successors, (63), 6 states have call predecessors, (63), 5 states have call successors, (63) Word has length 275 [2021-11-13 18:34:20,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:34:20,234 INFO L225 Difference]: With dead ends: 4469 [2021-11-13 18:34:20,234 INFO L226 Difference]: Without dead ends: 2242 [2021-11-13 18:34:20,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 536 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-13 18:34:20,242 INFO L933 BasicCegarLoop]: 962 mSDtfsCounter, 284 mSDsluCounter, 9774 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 384.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 10736 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 68.99ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 439.03ms IncrementalHoareTripleChecker+Time [2021-11-13 18:34:20,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [391 Valid, 10736 Invalid, 260 Unknown, 0 Unchecked, 68.99ms Time], IncrementalHoareTripleChecker [2 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 439.03ms Time] [2021-11-13 18:34:20,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2242 states. [2021-11-13 18:34:20,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2242 to 2242. [2021-11-13 18:34:20,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2242 states, 1462 states have (on average 1.1634746922024624) internal successors, (1701), 1505 states have internal predecessors, (1701), 596 states have call successors, (596), 171 states have call predecessors, (596), 181 states have return successors, (617), 596 states have call predecessors, (617), 594 states have call successors, (617) [2021-11-13 18:34:20,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2242 states to 2242 states and 2914 transitions. [2021-11-13 18:34:20,613 INFO L78 Accepts]: Start accepts. Automaton has 2242 states and 2914 transitions. Word has length 275 [2021-11-13 18:34:20,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:34:20,614 INFO L470 AbstractCegarLoop]: Abstraction has 2242 states and 2914 transitions. [2021-11-13 18:34:20,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 12.307692307692308) internal successors, (160), 12 states have internal predecessors, (160), 5 states have call successors, (62), 2 states have call predecessors, (62), 5 states have return successors, (63), 6 states have call predecessors, (63), 5 states have call successors, (63) [2021-11-13 18:34:20,614 INFO L276 IsEmpty]: Start isEmpty. Operand 2242 states and 2914 transitions. [2021-11-13 18:34:20,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2021-11-13 18:34:20,618 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:34:20,618 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:34:20,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-13 18:34:20,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-11-13 18:34:20,838 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_linux_arch_io_io_mem_unmapErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:34:20,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:34:20,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1347323176, now seen corresponding path program 1 times [2021-11-13 18:34:20,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:34:20,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882374119] [2021-11-13 18:34:20,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:34:20,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:34:20,906 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:34:20,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [320739032] [2021-11-13 18:34:20,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:34:20,907 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:34:20,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:34:20,908 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:34:20,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-13 18:34:53,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:53,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 2210 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-13 18:34:53,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:34:53,978 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2021-11-13 18:34:53,978 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:34:53,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:34:53,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882374119] [2021-11-13 18:34:53,979 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:34:53,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320739032] [2021-11-13 18:34:53,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320739032] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:34:53,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:34:53,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-13 18:34:53,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951565713] [2021-11-13 18:34:53,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:34:53,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 18:34:53,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:34:53,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 18:34:53,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:34:53,983 INFO L87 Difference]: Start difference. First operand 2242 states and 2914 transitions. Second operand has 10 states, 10 states have (on average 9.2) internal successors, (92), 8 states have internal predecessors, (92), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (31), 5 states have call predecessors, (31), 3 states have call successors, (31) [2021-11-13 18:34:54,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:34:54,506 INFO L93 Difference]: Finished difference Result 4497 states and 5862 transitions. [2021-11-13 18:34:54,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 18:34:54,506 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 8 states have internal predecessors, (92), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (31), 5 states have call predecessors, (31), 3 states have call successors, (31) Word has length 279 [2021-11-13 18:34:54,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:34:54,563 INFO L225 Difference]: With dead ends: 4497 [2021-11-13 18:34:54,563 INFO L226 Difference]: Without dead ends: 2274 [2021-11-13 18:34:54,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-13 18:34:54,572 INFO L933 BasicCegarLoop]: 1129 mSDtfsCounter, 91 mSDsluCounter, 8896 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 93.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 10025 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.62ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 110.91ms IncrementalHoareTripleChecker+Time [2021-11-13 18:34:54,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 10025 Invalid, 67 Unknown, 0 Unchecked, 15.62ms Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 110.91ms Time] [2021-11-13 18:34:54,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2274 states. [2021-11-13 18:34:54,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2274 to 1984. [2021-11-13 18:34:54,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1984 states, 1289 states have (on average 1.152055857253685) internal successors, (1485), 1327 states have internal predecessors, (1485), 523 states have call successors, (523), 161 states have call predecessors, (523), 169 states have return successors, (540), 523 states have call predecessors, (540), 521 states have call successors, (540) [2021-11-13 18:34:54,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1984 states to 1984 states and 2548 transitions. [2021-11-13 18:34:54,903 INFO L78 Accepts]: Start accepts. Automaton has 1984 states and 2548 transitions. Word has length 279 [2021-11-13 18:34:54,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:34:54,904 INFO L470 AbstractCegarLoop]: Abstraction has 1984 states and 2548 transitions. [2021-11-13 18:34:54,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 8 states have internal predecessors, (92), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (31), 5 states have call predecessors, (31), 3 states have call successors, (31) [2021-11-13 18:34:54,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1984 states and 2548 transitions. [2021-11-13 18:34:54,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2021-11-13 18:34:54,908 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:34:54,909 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:34:54,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-13 18:34:55,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-11-13 18:34:55,123 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:34:55,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:34:55,123 INFO L85 PathProgramCache]: Analyzing trace with hash 718206030, now seen corresponding path program 1 times [2021-11-13 18:34:55,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:34:55,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871904206] [2021-11-13 18:34:55,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:34:55,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:34:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:55,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:34:55,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:55,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 18:34:55,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:55,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 18:34:55,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:55,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-13 18:34:55,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:55,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:34:55,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:55,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:34:55,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:55,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:34:55,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:55,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 18:34:55,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:55,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-13 18:34:55,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:55,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:34:55,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:55,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:34:55,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:55,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:34:55,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:55,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-13 18:34:55,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:55,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:34:55,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:55,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:34:55,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:55,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:34:55,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:55,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-13 18:34:55,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:55,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 18:34:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:55,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-13 18:34:55,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:55,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-13 18:34:55,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:55,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:34:55,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:55,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:34:55,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:55,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 18:34:55,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:55,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:34:55,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:55,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-13 18:34:55,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:55,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-11-13 18:34:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:55,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-13 18:34:55,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:55,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-11-13 18:34:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:55,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:34:55,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:55,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-13 18:34:55,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:55,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-11-13 18:34:55,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:55,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-11-13 18:34:55,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:55,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-11-13 18:34:56,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:56,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:34:56,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:56,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:34:56,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:56,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-11-13 18:34:56,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:56,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:34:56,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:56,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:34:56,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:56,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2021-11-13 18:34:56,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:56,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:34:56,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:56,075 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 353 trivial. 0 not checked. [2021-11-13 18:34:56,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:34:56,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871904206] [2021-11-13 18:34:56,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871904206] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:34:56,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:34:56,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-13 18:34:56,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848121222] [2021-11-13 18:34:56,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:34:56,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 18:34:56,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:34:56,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 18:34:56,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:34:56,078 INFO L87 Difference]: Start difference. First operand 1984 states and 2548 transitions. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (34), 9 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 1 states have call successors, (31) [2021-11-13 18:34:58,126 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:35:00,497 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:35:02,816 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:35:05,129 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:35:07,382 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:35:12,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:35:12,025 INFO L93 Difference]: Finished difference Result 2102 states and 2738 transitions. [2021-11-13 18:35:12,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 18:35:12,027 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (34), 9 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 1 states have call successors, (31) Word has length 252 [2021-11-13 18:35:12,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:35:12,036 INFO L225 Difference]: With dead ends: 2102 [2021-11-13 18:35:12,036 INFO L226 Difference]: Without dead ends: 2100 [2021-11-13 18:35:12,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=154, Invalid=352, Unknown=0, NotChecked=0, Total=506 [2021-11-13 18:35:12,038 INFO L933 BasicCegarLoop]: 874 mSDtfsCounter, 1343 mSDsluCounter, 2781 mSDsCounter, 0 mSdLazyCounter, 2121 mSolverCounterSat, 1603 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13326.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1343 SdHoareTripleChecker+Valid, 3655 SdHoareTripleChecker+Invalid, 3729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.55ms SdHoareTripleChecker+Time, 1603 IncrementalHoareTripleChecker+Valid, 2121 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15330.72ms IncrementalHoareTripleChecker+Time [2021-11-13 18:35:12,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1343 Valid, 3655 Invalid, 3729 Unknown, 0 Unchecked, 30.55ms Time], IncrementalHoareTripleChecker [1603 Valid, 2121 Invalid, 5 Unknown, 0 Unchecked, 15330.72ms Time] [2021-11-13 18:35:12,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2021-11-13 18:35:12,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 1982. [2021-11-13 18:35:12,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1982 states, 1288 states have (on average 1.1498447204968945) internal successors, (1481), 1325 states have internal predecessors, (1481), 523 states have call successors, (523), 161 states have call predecessors, (523), 169 states have return successors, (540), 523 states have call predecessors, (540), 521 states have call successors, (540) [2021-11-13 18:35:12,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1982 states to 1982 states and 2544 transitions. [2021-11-13 18:35:12,286 INFO L78 Accepts]: Start accepts. Automaton has 1982 states and 2544 transitions. Word has length 252 [2021-11-13 18:35:12,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:35:12,286 INFO L470 AbstractCegarLoop]: Abstraction has 1982 states and 2544 transitions. [2021-11-13 18:35:12,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (34), 9 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 1 states have call successors, (31) [2021-11-13 18:35:12,286 INFO L276 IsEmpty]: Start isEmpty. Operand 1982 states and 2544 transitions. [2021-11-13 18:35:12,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2021-11-13 18:35:12,295 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:35:12,295 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 8, 8, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:35:12,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-13 18:35:12,296 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ldv_linux_arch_io_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:35:12,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:35:12,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1356640076, now seen corresponding path program 1 times [2021-11-13 18:35:12,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:35:12,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966342927] [2021-11-13 18:35:12,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:35:12,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:35:12,366 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:35:12,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [88946587] [2021-11-13 18:35:12,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:35:12,367 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:35:12,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:35:12,374 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:35:12,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-13 18:35:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:35:13,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 2497 conjuncts, 60 conjunts are in the unsatisfiable core [2021-11-13 18:35:13,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:35:14,489 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 55 proven. 45 refuted. 0 times theorem prover too weak. 747 trivial. 0 not checked. [2021-11-13 18:35:14,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:35:15,874 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 55 proven. 45 refuted. 0 times theorem prover too weak. 747 trivial. 0 not checked. [2021-11-13 18:35:15,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:35:15,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966342927] [2021-11-13 18:35:15,874 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:35:15,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88946587] [2021-11-13 18:35:15,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88946587] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:35:15,875 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:35:15,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 20 [2021-11-13 18:35:15,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579582891] [2021-11-13 18:35:15,875 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:35:15,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-13 18:35:15,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:35:15,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-13 18:35:15,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2021-11-13 18:35:15,878 INFO L87 Difference]: Start difference. First operand 1982 states and 2544 transitions. Second operand has 20 states, 19 states have (on average 7.052631578947368) internal successors, (134), 19 states have internal predecessors, (134), 8 states have call successors, (50), 2 states have call predecessors, (50), 4 states have return successors, (50), 8 states have call predecessors, (50), 7 states have call successors, (50) [2021-11-13 18:35:16,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:35:16,972 INFO L93 Difference]: Finished difference Result 1990 states and 2551 transitions. [2021-11-13 18:35:16,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-13 18:35:16,973 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 7.052631578947368) internal successors, (134), 19 states have internal predecessors, (134), 8 states have call successors, (50), 2 states have call predecessors, (50), 4 states have return successors, (50), 8 states have call predecessors, (50), 7 states have call successors, (50) Word has length 382 [2021-11-13 18:35:16,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:35:16,980 INFO L225 Difference]: With dead ends: 1990 [2021-11-13 18:35:16,980 INFO L226 Difference]: Without dead ends: 1982 [2021-11-13 18:35:16,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 773 GetRequests, 744 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=161, Invalid=769, Unknown=0, NotChecked=0, Total=930 [2021-11-13 18:35:16,982 INFO L933 BasicCegarLoop]: 948 mSDtfsCounter, 361 mSDsluCounter, 15559 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 463.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 16507 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.47ms SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 521.67ms IncrementalHoareTripleChecker+Time [2021-11-13 18:35:16,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [441 Valid, 16507 Invalid, 603 Unknown, 0 Unchecked, 20.47ms Time], IncrementalHoareTripleChecker [58 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 521.67ms Time] [2021-11-13 18:35:16,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1982 states. [2021-11-13 18:35:17,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1982 to 1978. [2021-11-13 18:35:17,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1978 states, 1287 states have (on average 1.1484071484071483) internal successors, (1478), 1322 states have internal predecessors, (1478), 520 states have call successors, (520), 161 states have call predecessors, (520), 169 states have return successors, (538), 522 states have call predecessors, (538), 519 states have call successors, (538) [2021-11-13 18:35:17,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1978 states to 1978 states and 2536 transitions. [2021-11-13 18:35:17,197 INFO L78 Accepts]: Start accepts. Automaton has 1978 states and 2536 transitions. Word has length 382 [2021-11-13 18:35:17,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:35:17,198 INFO L470 AbstractCegarLoop]: Abstraction has 1978 states and 2536 transitions. [2021-11-13 18:35:17,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 7.052631578947368) internal successors, (134), 19 states have internal predecessors, (134), 8 states have call successors, (50), 2 states have call predecessors, (50), 4 states have return successors, (50), 8 states have call predecessors, (50), 7 states have call successors, (50) [2021-11-13 18:35:17,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1978 states and 2536 transitions. [2021-11-13 18:35:17,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2021-11-13 18:35:17,206 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:35:17,207 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 8, 8, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:35:17,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-13 18:35:17,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:35:17,435 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ldv_linux_arch_io_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:35:17,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:35:17,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1933037382, now seen corresponding path program 1 times [2021-11-13 18:35:17,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:35:17,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182069424] [2021-11-13 18:35:17,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:35:17,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:35:17,497 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:35:17,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [829001042] [2021-11-13 18:35:17,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:35:17,498 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:35:17,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:35:17,503 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:35:17,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-13 18:35:27,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:35:27,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 2487 conjuncts, 45 conjunts are in the unsatisfiable core [2021-11-13 18:35:27,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:35:28,746 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 330 proven. 0 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2021-11-13 18:35:28,747 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:35:28,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:35:28,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182069424] [2021-11-13 18:35:28,747 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:35:28,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829001042] [2021-11-13 18:35:28,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829001042] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:35:28,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:35:28,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-13 18:35:28,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085965202] [2021-11-13 18:35:28,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:35:28,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 18:35:28,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:35:28,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 18:35:28,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:35:28,751 INFO L87 Difference]: Start difference. First operand 1978 states and 2536 transitions. Second operand has 10 states, 10 states have (on average 15.0) internal successors, (150), 8 states have internal predecessors, (150), 3 states have call successors, (50), 2 states have call predecessors, (50), 4 states have return successors, (50), 5 states have call predecessors, (50), 3 states have call successors, (50) [2021-11-13 18:35:30,442 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:35:30,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:35:30,545 INFO L93 Difference]: Finished difference Result 4159 states and 5367 transitions. [2021-11-13 18:35:30,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 18:35:30,576 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.0) internal successors, (150), 8 states have internal predecessors, (150), 3 states have call successors, (50), 2 states have call predecessors, (50), 4 states have return successors, (50), 5 states have call predecessors, (50), 3 states have call successors, (50) Word has length 367 [2021-11-13 18:35:30,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:35:30,581 INFO L225 Difference]: With dead ends: 4159 [2021-11-13 18:35:30,581 INFO L226 Difference]: Without dead ends: 2211 [2021-11-13 18:35:30,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-13 18:35:30,586 INFO L933 BasicCegarLoop]: 1094 mSDtfsCounter, 78 mSDsluCounter, 8641 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1444.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 9735 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.18ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1464.15ms IncrementalHoareTripleChecker+Time [2021-11-13 18:35:30,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 9735 Invalid, 67 Unknown, 0 Unchecked, 11.18ms Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 1464.15ms Time] [2021-11-13 18:35:30,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2211 states. [2021-11-13 18:35:30,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2211 to 1984. [2021-11-13 18:35:30,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1984 states, 1293 states have (on average 1.1477184841453982) internal successors, (1484), 1325 states have internal predecessors, (1484), 520 states have call successors, (520), 161 states have call predecessors, (520), 169 states have return successors, (538), 525 states have call predecessors, (538), 519 states have call successors, (538) [2021-11-13 18:35:30,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1984 states to 1984 states and 2542 transitions. [2021-11-13 18:35:30,827 INFO L78 Accepts]: Start accepts. Automaton has 1984 states and 2542 transitions. Word has length 367 [2021-11-13 18:35:30,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:35:30,827 INFO L470 AbstractCegarLoop]: Abstraction has 1984 states and 2542 transitions. [2021-11-13 18:35:30,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.0) internal successors, (150), 8 states have internal predecessors, (150), 3 states have call successors, (50), 2 states have call predecessors, (50), 4 states have return successors, (50), 5 states have call predecessors, (50), 3 states have call successors, (50) [2021-11-13 18:35:30,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1984 states and 2542 transitions. [2021-11-13 18:35:30,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2021-11-13 18:35:30,834 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:35:30,835 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 8, 8, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:35:30,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-13 18:35:31,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:35:31,051 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ldv_linux_arch_io_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:35:31,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:35:31,051 INFO L85 PathProgramCache]: Analyzing trace with hash -865395100, now seen corresponding path program 1 times [2021-11-13 18:35:31,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:35:31,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673770414] [2021-11-13 18:35:31,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:35:31,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:35:31,106 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:35:31,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [785742293] [2021-11-13 18:35:31,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:35:31,107 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:35:31,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:35:31,108 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:35:31,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-13 18:35:45,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:35:45,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 2554 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-13 18:35:45,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:35:45,957 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 557 trivial. 0 not checked. [2021-11-13 18:35:45,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:35:45,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:35:45,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673770414] [2021-11-13 18:35:45,958 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:35:45,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785742293] [2021-11-13 18:35:45,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785742293] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:35:45,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:35:45,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:35:45,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550233228] [2021-11-13 18:35:45,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:35:45,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:35:45,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:35:45,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:35:45,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:35:45,961 INFO L87 Difference]: Start difference. First operand 1984 states and 2542 transitions. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (49), 2 states have call predecessors, (49), 3 states have return successors, (48), 3 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-13 18:35:46,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:35:46,282 INFO L93 Difference]: Finished difference Result 3696 states and 4790 transitions. [2021-11-13 18:35:46,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:35:46,283 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (49), 2 states have call predecessors, (49), 3 states have return successors, (48), 3 states have call predecessors, (48), 2 states have call successors, (48) Word has length 388 [2021-11-13 18:35:46,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:35:46,288 INFO L225 Difference]: With dead ends: 3696 [2021-11-13 18:35:46,288 INFO L226 Difference]: Without dead ends: 2185 [2021-11-13 18:35:46,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:35:46,293 INFO L933 BasicCegarLoop]: 1094 mSDtfsCounter, 270 mSDsluCounter, 4012 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 5106 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.87ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.98ms IncrementalHoareTripleChecker+Time [2021-11-13 18:35:46,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 5106 Invalid, 24 Unknown, 0 Unchecked, 6.87ms Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 68.98ms Time] [2021-11-13 18:35:46,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2185 states. [2021-11-13 18:35:46,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2185 to 1984. [2021-11-13 18:35:46,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1984 states, 1293 states have (on average 1.1461716937354989) internal successors, (1482), 1325 states have internal predecessors, (1482), 520 states have call successors, (520), 161 states have call predecessors, (520), 169 states have return successors, (538), 525 states have call predecessors, (538), 519 states have call successors, (538) [2021-11-13 18:35:46,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1984 states to 1984 states and 2540 transitions. [2021-11-13 18:35:46,541 INFO L78 Accepts]: Start accepts. Automaton has 1984 states and 2540 transitions. Word has length 388 [2021-11-13 18:35:46,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:35:46,542 INFO L470 AbstractCegarLoop]: Abstraction has 1984 states and 2540 transitions. [2021-11-13 18:35:46,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (49), 2 states have call predecessors, (49), 3 states have return successors, (48), 3 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-13 18:35:46,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1984 states and 2540 transitions. [2021-11-13 18:35:46,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2021-11-13 18:35:46,548 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:35:46,549 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 8, 8, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:35:46,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-13 18:35:46,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-11-13 18:35:46,763 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ldv_linux_arch_io_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:35:46,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:35:46,763 INFO L85 PathProgramCache]: Analyzing trace with hash -996609933, now seen corresponding path program 1 times [2021-11-13 18:35:46,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:35:46,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046931701] [2021-11-13 18:35:46,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:35:46,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:35:46,813 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:35:46,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [623005965] [2021-11-13 18:35:46,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:35:46,814 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:35:46,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:35:46,815 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:35:46,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-13 18:35:47,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:35:47,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 2602 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-13 18:35:47,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:35:48,992 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 41 proven. 123 refuted. 0 times theorem prover too weak. 683 trivial. 0 not checked. [2021-11-13 18:35:48,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:35:50,151 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 847 trivial. 0 not checked. [2021-11-13 18:35:50,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:35:50,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046931701] [2021-11-13 18:35:50,151 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:35:50,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623005965] [2021-11-13 18:35:50,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623005965] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 18:35:50,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:35:50,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 12 [2021-11-13 18:35:50,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082411499] [2021-11-13 18:35:50,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:35:50,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 18:35:50,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:35:50,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 18:35:50,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-13 18:35:50,154 INFO L87 Difference]: Start difference. First operand 1984 states and 2540 transitions. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 4 states have call successors, (50), 4 states have call predecessors, (50), 3 states have return successors, (49), 4 states have call predecessors, (49), 4 states have call successors, (49) [2021-11-13 18:35:52,181 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:35:59,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:35:59,470 INFO L93 Difference]: Finished difference Result 3994 states and 5103 transitions. [2021-11-13 18:35:59,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 18:35:59,471 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 4 states have call successors, (50), 4 states have call predecessors, (50), 3 states have return successors, (49), 4 states have call predecessors, (49), 4 states have call successors, (49) Word has length 402 [2021-11-13 18:35:59,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:35:59,483 INFO L225 Difference]: With dead ends: 3994 [2021-11-13 18:35:59,483 INFO L226 Difference]: Without dead ends: 3959 [2021-11-13 18:35:59,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 813 GetRequests, 794 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-11-13 18:35:59,486 INFO L933 BasicCegarLoop]: 1340 mSDtfsCounter, 2595 mSDsluCounter, 2825 mSDsCounter, 0 mSdLazyCounter, 4766 mSolverCounterSat, 1821 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7248.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2703 SdHoareTripleChecker+Valid, 4165 SdHoareTripleChecker+Invalid, 6588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.53ms SdHoareTripleChecker+Time, 1821 IncrementalHoareTripleChecker+Valid, 4766 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8482.66ms IncrementalHoareTripleChecker+Time [2021-11-13 18:35:59,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2703 Valid, 4165 Invalid, 6588 Unknown, 0 Unchecked, 38.53ms Time], IncrementalHoareTripleChecker [1821 Valid, 4766 Invalid, 1 Unknown, 0 Unchecked, 8482.66ms Time] [2021-11-13 18:35:59,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3959 states. [2021-11-13 18:35:59,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3959 to 3943. [2021-11-13 18:35:59,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3943 states, 2567 states have (on average 1.147643163225555) internal successors, (2946), 2632 states have internal predecessors, (2946), 1033 states have call successors, (1033), 320 states have call predecessors, (1033), 341 states have return successors, (1070), 1045 states have call predecessors, (1070), 1032 states have call successors, (1070) [2021-11-13 18:35:59,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3943 states to 3943 states and 5049 transitions. [2021-11-13 18:35:59,945 INFO L78 Accepts]: Start accepts. Automaton has 3943 states and 5049 transitions. Word has length 402 [2021-11-13 18:35:59,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:35:59,946 INFO L470 AbstractCegarLoop]: Abstraction has 3943 states and 5049 transitions. [2021-11-13 18:35:59,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 4 states have call successors, (50), 4 states have call predecessors, (50), 3 states have return successors, (49), 4 states have call predecessors, (49), 4 states have call successors, (49) [2021-11-13 18:35:59,946 INFO L276 IsEmpty]: Start isEmpty. Operand 3943 states and 5049 transitions. [2021-11-13 18:35:59,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2021-11-13 18:35:59,950 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:35:59,951 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 10, 10, 10, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:35:59,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-13 18:36:00,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-11-13 18:36:00,167 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ldv_linux_arch_io_io_mem_unmapErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:36:00,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:36:00,167 INFO L85 PathProgramCache]: Analyzing trace with hash 217142695, now seen corresponding path program 1 times [2021-11-13 18:36:00,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:36:00,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033488349] [2021-11-13 18:36:00,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:36:00,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:36:00,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:36:01,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 18:36:01,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 18:36:01,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-13 18:36:01,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:36:01,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:36:01,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:36:01,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 18:36:01,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-13 18:36:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:36:01,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:36:01,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:36:01,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-13 18:36:01,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:36:01,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:36:01,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:36:01,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-13 18:36:01,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 18:36:01,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-13 18:36:01,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-13 18:36:01,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:36:01,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:36:01,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 18:36:01,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:36:01,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-13 18:36:01,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-11-13 18:36:01,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-13 18:36:01,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-11-13 18:36:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:36:01,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-13 18:36:01,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-11-13 18:36:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-11-13 18:36:01,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-11-13 18:36:01,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-11-13 18:36:01,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-11-13 18:36:01,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-11-13 18:36:01,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2021-11-13 18:36:01,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-11-13 18:36:01,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-11-13 18:36:01,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-11-13 18:36:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-11-13 18:36:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-11-13 18:36:01,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2021-11-13 18:36:01,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-11-13 18:36:01,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2021-11-13 18:36:01,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-11-13 18:36:01,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-11-13 18:36:01,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2021-11-13 18:36:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2021-11-13 18:36:01,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-11-13 18:36:01,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:36:01,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:36:01,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:36:01,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 18:36:01,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 18:36:01,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:36:01,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 18:36:01,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 18:36:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 18:36:01,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2021-11-13 18:36:01,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:36:01,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:36:01,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:36:01,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:01,965 INFO L134 CoverageAnalysis]: Checked inductivity of 960 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 933 trivial. 0 not checked. [2021-11-13 18:36:01,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:36:01,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033488349] [2021-11-13 18:36:01,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033488349] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:36:01,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:36:01,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-13 18:36:01,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216612329] [2021-11-13 18:36:01,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:36:01,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-13 18:36:01,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:36:01,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-13 18:36:01,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2021-11-13 18:36:01,969 INFO L87 Difference]: Start difference. First operand 3943 states and 5049 transitions. Second operand has 20 states, 19 states have (on average 8.263157894736842) internal successors, (157), 14 states have internal predecessors, (157), 6 states have call successors, (59), 7 states have call predecessors, (59), 3 states have return successors, (57), 6 states have call predecessors, (57), 6 states have call successors, (57) [2021-11-13 18:36:04,008 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:36:06,250 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:36:08,536 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:36:10,824 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:36:19,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:36:19,749 INFO L93 Difference]: Finished difference Result 8703 states and 11544 transitions. [2021-11-13 18:36:19,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-13 18:36:19,749 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 8.263157894736842) internal successors, (157), 14 states have internal predecessors, (157), 6 states have call successors, (59), 7 states have call predecessors, (59), 3 states have return successors, (57), 6 states have call predecessors, (57), 6 states have call successors, (57) Word has length 381 [2021-11-13 18:36:19,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:36:19,761 INFO L225 Difference]: With dead ends: 8703 [2021-11-13 18:36:19,761 INFO L226 Difference]: Without dead ends: 5775 [2021-11-13 18:36:19,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=255, Invalid=1385, Unknown=0, NotChecked=0, Total=1640 [2021-11-13 18:36:19,770 INFO L933 BasicCegarLoop]: 1302 mSDtfsCounter, 2474 mSDsluCounter, 13696 mSDsCounter, 0 mSdLazyCounter, 6924 mSolverCounterSat, 1958 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14254.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2488 SdHoareTripleChecker+Valid, 14998 SdHoareTripleChecker+Invalid, 8886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 63.62ms SdHoareTripleChecker+Time, 1958 IncrementalHoareTripleChecker+Valid, 6924 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16296.93ms IncrementalHoareTripleChecker+Time [2021-11-13 18:36:19,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2488 Valid, 14998 Invalid, 8886 Unknown, 0 Unchecked, 63.62ms Time], IncrementalHoareTripleChecker [1958 Valid, 6924 Invalid, 4 Unknown, 0 Unchecked, 16296.93ms Time] [2021-11-13 18:36:19,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5775 states. [2021-11-13 18:36:20,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5775 to 4161. [2021-11-13 18:36:20,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4161 states, 2709 states have (on average 1.1458102620893318) internal successors, (3104), 2768 states have internal predecessors, (3104), 1109 states have call successors, (1109), 320 states have call predecessors, (1109), 341 states have return successors, (1146), 1119 states have call predecessors, (1146), 1108 states have call successors, (1146) [2021-11-13 18:36:20,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4161 states to 4161 states and 5359 transitions. [2021-11-13 18:36:20,366 INFO L78 Accepts]: Start accepts. Automaton has 4161 states and 5359 transitions. Word has length 381 [2021-11-13 18:36:20,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:36:20,367 INFO L470 AbstractCegarLoop]: Abstraction has 4161 states and 5359 transitions. [2021-11-13 18:36:20,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 8.263157894736842) internal successors, (157), 14 states have internal predecessors, (157), 6 states have call successors, (59), 7 states have call predecessors, (59), 3 states have return successors, (57), 6 states have call predecessors, (57), 6 states have call successors, (57) [2021-11-13 18:36:20,367 INFO L276 IsEmpty]: Start isEmpty. Operand 4161 states and 5359 transitions. [2021-11-13 18:36:20,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2021-11-13 18:36:20,374 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:36:20,375 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 14, 14, 14, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:36:20,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-13 18:36:20,375 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ldv_linux_arch_io_io_mem_unmapErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:36:20,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:36:20,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1572892376, now seen corresponding path program 1 times [2021-11-13 18:36:20,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:36:20,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598689968] [2021-11-13 18:36:20,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:36:20,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:36:20,433 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:36:20,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [164393322] [2021-11-13 18:36:20,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:36:20,433 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:36:20,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:36:20,438 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:36:20,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-13 18:36:21,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:21,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 3110 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-13 18:36:21,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:36:22,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1227 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 1173 trivial. 0 not checked. [2021-11-13 18:36:22,211 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:36:22,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:36:22,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598689968] [2021-11-13 18:36:22,212 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:36:22,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164393322] [2021-11-13 18:36:22,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164393322] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:36:22,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:36:22,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-13 18:36:22,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799236075] [2021-11-13 18:36:22,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:36:22,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-13 18:36:22,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:36:22,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-13 18:36:22,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-11-13 18:36:22,214 INFO L87 Difference]: Start difference. First operand 4161 states and 5359 transitions. Second operand has 15 states, 14 states have (on average 12.142857142857142) internal successors, (170), 14 states have internal predecessors, (170), 7 states have call successors, (66), 2 states have call predecessors, (66), 4 states have return successors, (64), 7 states have call predecessors, (64), 7 states have call successors, (64) [2021-11-13 18:36:24,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:36:24,481 INFO L93 Difference]: Finished difference Result 8558 states and 11343 transitions. [2021-11-13 18:36:24,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-13 18:36:24,482 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 12.142857142857142) internal successors, (170), 14 states have internal predecessors, (170), 7 states have call successors, (66), 2 states have call predecessors, (66), 4 states have return successors, (64), 7 states have call predecessors, (64), 7 states have call successors, (64) Word has length 473 [2021-11-13 18:36:24,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:36:24,492 INFO L225 Difference]: With dead ends: 8558 [2021-11-13 18:36:24,492 INFO L226 Difference]: Without dead ends: 5517 [2021-11-13 18:36:24,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 461 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=185, Invalid=745, Unknown=0, NotChecked=0, Total=930 [2021-11-13 18:36:24,500 INFO L933 BasicCegarLoop]: 1437 mSDtfsCounter, 1356 mSDsluCounter, 16745 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 596 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 905.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1444 SdHoareTripleChecker+Valid, 18182 SdHoareTripleChecker+Invalid, 1251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.55ms SdHoareTripleChecker+Time, 596 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1058.14ms IncrementalHoareTripleChecker+Time [2021-11-13 18:36:24,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1444 Valid, 18182 Invalid, 1251 Unknown, 0 Unchecked, 23.55ms Time], IncrementalHoareTripleChecker [596 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 1058.14ms Time] [2021-11-13 18:36:24,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5517 states. [2021-11-13 18:36:25,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5517 to 3546. [2021-11-13 18:36:25,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3546 states, 2317 states have (on average 1.144151920586966) internal successors, (2651), 2375 states have internal predecessors, (2651), 929 states have call successors, (929), 275 states have call predecessors, (929), 298 states have return successors, (966), 946 states have call predecessors, (966), 928 states have call successors, (966) [2021-11-13 18:36:25,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3546 states to 3546 states and 4546 transitions. [2021-11-13 18:36:25,016 INFO L78 Accepts]: Start accepts. Automaton has 3546 states and 4546 transitions. Word has length 473 [2021-11-13 18:36:25,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:36:25,017 INFO L470 AbstractCegarLoop]: Abstraction has 3546 states and 4546 transitions. [2021-11-13 18:36:25,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 12.142857142857142) internal successors, (170), 14 states have internal predecessors, (170), 7 states have call successors, (66), 2 states have call predecessors, (66), 4 states have return successors, (64), 7 states have call predecessors, (64), 7 states have call successors, (64) [2021-11-13 18:36:25,017 INFO L276 IsEmpty]: Start isEmpty. Operand 3546 states and 4546 transitions. [2021-11-13 18:36:25,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2021-11-13 18:36:25,021 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:36:25,021 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 10, 10, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:36:25,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-13 18:36:25,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-11-13 18:36:25,222 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ldv_linux_arch_io_io_mem_unmapErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:36:25,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:36:25,223 INFO L85 PathProgramCache]: Analyzing trace with hash -517547620, now seen corresponding path program 1 times [2021-11-13 18:36:25,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:36:25,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124071515] [2021-11-13 18:36:25,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:36:25,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:36:25,278 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:36:25,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1496512546] [2021-11-13 18:36:25,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:36:25,279 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:36:25,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:36:25,280 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:36:25,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-13 18:36:26,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:26,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 3187 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-13 18:36:26,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:36:27,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 66 proven. 314 refuted. 0 times theorem prover too weak. 1145 trivial. 0 not checked. [2021-11-13 18:36:27,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:36:29,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1523 trivial. 0 not checked. [2021-11-13 18:36:29,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:36:29,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124071515] [2021-11-13 18:36:29,235 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:36:29,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496512546] [2021-11-13 18:36:29,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496512546] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:36:29,235 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:36:29,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 12 [2021-11-13 18:36:29,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552386562] [2021-11-13 18:36:29,235 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:36:29,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 18:36:29,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:36:29,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 18:36:29,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-13 18:36:29,237 INFO L87 Difference]: Start difference. First operand 3546 states and 4546 transitions. Second operand has 12 states, 12 states have (on average 15.25) internal successors, (183), 12 states have internal predecessors, (183), 5 states have call successors, (81), 6 states have call predecessors, (81), 7 states have return successors, (80), 5 states have call predecessors, (80), 5 states have call successors, (80) [2021-11-13 18:36:31,262 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:36:33,603 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:36:40,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:36:40,110 INFO L93 Difference]: Finished difference Result 4647 states and 5943 transitions. [2021-11-13 18:36:40,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 18:36:40,111 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 15.25) internal successors, (183), 12 states have internal predecessors, (183), 5 states have call successors, (81), 6 states have call predecessors, (81), 7 states have return successors, (80), 5 states have call predecessors, (80), 5 states have call successors, (80) Word has length 526 [2021-11-13 18:36:40,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:36:40,122 INFO L225 Difference]: With dead ends: 4647 [2021-11-13 18:36:40,122 INFO L226 Difference]: Without dead ends: 4645 [2021-11-13 18:36:40,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1058 GetRequests, 1040 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=198, Unknown=0, NotChecked=0, Total=306 [2021-11-13 18:36:40,123 INFO L933 BasicCegarLoop]: 1001 mSDtfsCounter, 2624 mSDsluCounter, 2341 mSDsCounter, 0 mSdLazyCounter, 4039 mSolverCounterSat, 2093 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8445.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2821 SdHoareTripleChecker+Valid, 3342 SdHoareTripleChecker+Invalid, 6134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.52ms SdHoareTripleChecker+Time, 2093 IncrementalHoareTripleChecker+Valid, 4039 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9958.07ms IncrementalHoareTripleChecker+Time [2021-11-13 18:36:40,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2821 Valid, 3342 Invalid, 6134 Unknown, 0 Unchecked, 28.52ms Time], IncrementalHoareTripleChecker [2093 Valid, 4039 Invalid, 2 Unknown, 0 Unchecked, 9958.07ms Time] [2021-11-13 18:36:40,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4645 states. [2021-11-13 18:36:40,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4645 to 4614. [2021-11-13 18:36:40,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4614 states, 3014 states have (on average 1.141672196416722) internal successors, (3441), 3088 states have internal predecessors, (3441), 1210 states have call successors, (1210), 359 states have call predecessors, (1210), 388 states have return successors, (1259), 1232 states have call predecessors, (1259), 1209 states have call successors, (1259) [2021-11-13 18:36:40,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4614 states to 4614 states and 5910 transitions. [2021-11-13 18:36:40,714 INFO L78 Accepts]: Start accepts. Automaton has 4614 states and 5910 transitions. Word has length 526 [2021-11-13 18:36:40,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:36:40,715 INFO L470 AbstractCegarLoop]: Abstraction has 4614 states and 5910 transitions. [2021-11-13 18:36:40,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.25) internal successors, (183), 12 states have internal predecessors, (183), 5 states have call successors, (81), 6 states have call predecessors, (81), 7 states have return successors, (80), 5 states have call predecessors, (80), 5 states have call successors, (80) [2021-11-13 18:36:40,715 INFO L276 IsEmpty]: Start isEmpty. Operand 4614 states and 5910 transitions. [2021-11-13 18:36:40,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2021-11-13 18:36:40,720 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:36:40,720 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 10, 10, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:36:40,744 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-11-13 18:36:40,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-11-13 18:36:40,921 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ldv_linux_arch_io_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:36:40,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:36:40,921 INFO L85 PathProgramCache]: Analyzing trace with hash -283972850, now seen corresponding path program 1 times [2021-11-13 18:36:40,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:36:40,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210101982] [2021-11-13 18:36:40,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:36:40,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:36:40,961 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:36:40,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1746302313] [2021-11-13 18:36:40,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:36:40,961 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:36:40,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:36:40,962 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:36:40,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-13 18:36:41,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:41,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 3488 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:36:41,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:36:42,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1077 backedges. 399 proven. 0 refuted. 0 times theorem prover too weak. 678 trivial. 0 not checked. [2021-11-13 18:36:42,498 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:36:42,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:36:42,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210101982] [2021-11-13 18:36:42,498 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:36:42,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746302313] [2021-11-13 18:36:42,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746302313] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:36:42,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:36:42,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:36:42,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865688865] [2021-11-13 18:36:42,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:36:42,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:36:42,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:36:42,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:36:42,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:36:42,500 INFO L87 Difference]: Start difference. First operand 4614 states and 5910 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 2 states have call successors, (73), 2 states have call predecessors, (73), 2 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) [2021-11-13 18:36:43,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:36:43,280 INFO L93 Difference]: Finished difference Result 9241 states and 11913 transitions. [2021-11-13 18:36:43,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:36:43,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 2 states have call successors, (73), 2 states have call predecessors, (73), 2 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) Word has length 545 [2021-11-13 18:36:43,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:36:43,298 INFO L225 Difference]: With dead ends: 9241 [2021-11-13 18:36:43,298 INFO L226 Difference]: Without dead ends: 4962 [2021-11-13 18:36:43,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 543 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:36:43,312 INFO L933 BasicCegarLoop]: 1059 mSDtfsCounter, 74 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 80.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 2030 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.43ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 95.44ms IncrementalHoareTripleChecker+Time [2021-11-13 18:36:43,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 2030 Invalid, 30 Unknown, 0 Unchecked, 2.43ms Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 95.44ms Time] [2021-11-13 18:36:43,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4962 states. [2021-11-13 18:36:44,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4962 to 4629. [2021-11-13 18:36:44,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4629 states, 3029 states have (on average 1.1409706173654672) internal successors, (3456), 3103 states have internal predecessors, (3456), 1210 states have call successors, (1210), 359 states have call predecessors, (1210), 388 states have return successors, (1259), 1232 states have call predecessors, (1259), 1209 states have call successors, (1259) [2021-11-13 18:36:44,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4629 states to 4629 states and 5925 transitions. [2021-11-13 18:36:44,044 INFO L78 Accepts]: Start accepts. Automaton has 4629 states and 5925 transitions. Word has length 545 [2021-11-13 18:36:44,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:36:44,045 INFO L470 AbstractCegarLoop]: Abstraction has 4629 states and 5925 transitions. [2021-11-13 18:36:44,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 2 states have call successors, (73), 2 states have call predecessors, (73), 2 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) [2021-11-13 18:36:44,045 INFO L276 IsEmpty]: Start isEmpty. Operand 4629 states and 5925 transitions. [2021-11-13 18:36:44,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 721 [2021-11-13 18:36:44,055 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:36:44,055 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 13, 13, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:36:44,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-13 18:36:44,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:36:44,271 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ldv_linux_arch_io_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:36:44,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:36:44,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1823341850, now seen corresponding path program 1 times [2021-11-13 18:36:44,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:36:44,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689341936] [2021-11-13 18:36:44,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:36:44,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:36:44,333 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:36:44,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1822536192] [2021-11-13 18:36:44,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:36:44,334 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:36:44,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:36:44,351 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:36:44,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-13 18:36:45,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:45,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 4214 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:36:45,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:36:46,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1605 backedges. 353 proven. 0 refuted. 0 times theorem prover too weak. 1252 trivial. 0 not checked. [2021-11-13 18:36:46,949 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:36:46,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:36:46,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689341936] [2021-11-13 18:36:46,949 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:36:46,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822536192] [2021-11-13 18:36:46,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822536192] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:36:46,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:36:46,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:36:46,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307580068] [2021-11-13 18:36:46,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:36:46,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:36:46,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:36:46,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:36:46,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:36:46,951 INFO L87 Difference]: Start difference. First operand 4629 states and 5925 transitions. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 2 states have internal predecessors, (226), 2 states have call successors, (82), 2 states have call predecessors, (82), 2 states have return successors, (81), 2 states have call predecessors, (81), 2 states have call successors, (81) [2021-11-13 18:36:47,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:36:47,532 INFO L93 Difference]: Finished difference Result 8854 states and 11355 transitions. [2021-11-13 18:36:47,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:36:47,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 2 states have internal predecessors, (226), 2 states have call successors, (82), 2 states have call predecessors, (82), 2 states have return successors, (81), 2 states have call predecessors, (81), 2 states have call successors, (81) Word has length 720 [2021-11-13 18:36:47,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:36:47,542 INFO L225 Difference]: With dead ends: 8854 [2021-11-13 18:36:47,542 INFO L226 Difference]: Without dead ends: 4619 [2021-11-13 18:36:47,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 719 GetRequests, 718 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:36:47,551 INFO L933 BasicCegarLoop]: 969 mSDtfsCounter, 680 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.51ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.98ms IncrementalHoareTripleChecker+Time [2021-11-13 18:36:47,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [680 Valid, 969 Invalid, 3 Unknown, 0 Unchecked, 1.51ms Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 2.98ms Time] [2021-11-13 18:36:47,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4619 states. [2021-11-13 18:36:48,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4619 to 4619. [2021-11-13 18:36:48,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4619 states, 3024 states have (on average 1.1378968253968254) internal successors, (3441), 3098 states have internal predecessors, (3441), 1205 states have call successors, (1205), 359 states have call predecessors, (1205), 388 states have return successors, (1254), 1227 states have call predecessors, (1254), 1204 states have call successors, (1254) [2021-11-13 18:36:48,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4619 states to 4619 states and 5900 transitions. [2021-11-13 18:36:48,167 INFO L78 Accepts]: Start accepts. Automaton has 4619 states and 5900 transitions. Word has length 720 [2021-11-13 18:36:48,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:36:48,168 INFO L470 AbstractCegarLoop]: Abstraction has 4619 states and 5900 transitions. [2021-11-13 18:36:48,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 2 states have internal predecessors, (226), 2 states have call successors, (82), 2 states have call predecessors, (82), 2 states have return successors, (81), 2 states have call predecessors, (81), 2 states have call successors, (81) [2021-11-13 18:36:48,168 INFO L276 IsEmpty]: Start isEmpty. Operand 4619 states and 5900 transitions. [2021-11-13 18:36:48,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 731 [2021-11-13 18:36:48,175 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:36:48,175 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 13, 13, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:36:48,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-13 18:36:48,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:36:48,376 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ldv_linux_arch_io_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:36:48,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:36:48,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1597474864, now seen corresponding path program 1 times [2021-11-13 18:36:48,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:36:48,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306258248] [2021-11-13 18:36:48,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:36:48,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:36:48,420 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:36:48,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [712776626] [2021-11-13 18:36:48,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:36:48,421 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:36:48,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:36:48,422 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:36:48,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-13 18:36:49,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:49,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 4254 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:36:49,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:36:50,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1622 backedges. 699 proven. 1 refuted. 0 times theorem prover too weak. 922 trivial. 0 not checked. [2021-11-13 18:36:50,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:36:51,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1622 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1618 trivial. 0 not checked. [2021-11-13 18:36:51,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:36:51,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306258248] [2021-11-13 18:36:51,884 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:36:51,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712776626] [2021-11-13 18:36:51,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712776626] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:36:51,884 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:36:51,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-13 18:36:51,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688665093] [2021-11-13 18:36:51,885 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:36:51,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:36:51,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:36:51,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:36:51,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:36:51,890 INFO L87 Difference]: Start difference. First operand 4619 states and 5900 transitions. Second operand has 6 states, 6 states have (on average 45.833333333333336) internal successors, (275), 6 states have internal predecessors, (275), 4 states have call successors, (124), 2 states have call predecessors, (124), 2 states have return successors, (123), 4 states have call predecessors, (123), 4 states have call successors, (123) [2021-11-13 18:36:53,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:36:53,374 INFO L93 Difference]: Finished difference Result 10135 states and 13171 transitions. [2021-11-13 18:36:53,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:36:53,375 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 45.833333333333336) internal successors, (275), 6 states have internal predecessors, (275), 4 states have call successors, (124), 2 states have call predecessors, (124), 2 states have return successors, (123), 4 states have call predecessors, (123), 4 states have call successors, (123) Word has length 730 [2021-11-13 18:36:53,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:36:53,388 INFO L225 Difference]: With dead ends: 10135 [2021-11-13 18:36:53,388 INFO L226 Difference]: Without dead ends: 5852 [2021-11-13 18:36:53,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1458 GetRequests, 1454 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:36:53,395 INFO L933 BasicCegarLoop]: 1135 mSDtfsCounter, 401 mSDsluCounter, 2726 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 460.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 3861 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.33ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 545.44ms IncrementalHoareTripleChecker+Time [2021-11-13 18:36:53,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [553 Valid, 3861 Invalid, 316 Unknown, 0 Unchecked, 6.33ms Time], IncrementalHoareTripleChecker [52 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 545.44ms Time] [2021-11-13 18:36:53,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5852 states. [2021-11-13 18:36:54,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5852 to 4919. [2021-11-13 18:36:54,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4919 states, 3234 states have (on average 1.1428571428571428) internal successors, (3696), 3308 states have internal predecessors, (3696), 1295 states have call successors, (1295), 359 states have call predecessors, (1295), 388 states have return successors, (1344), 1317 states have call predecessors, (1344), 1294 states have call successors, (1344) [2021-11-13 18:36:54,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4919 states to 4919 states and 6335 transitions. [2021-11-13 18:36:54,091 INFO L78 Accepts]: Start accepts. Automaton has 4919 states and 6335 transitions. Word has length 730 [2021-11-13 18:36:54,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:36:54,091 INFO L470 AbstractCegarLoop]: Abstraction has 4919 states and 6335 transitions. [2021-11-13 18:36:54,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 45.833333333333336) internal successors, (275), 6 states have internal predecessors, (275), 4 states have call successors, (124), 2 states have call predecessors, (124), 2 states have return successors, (123), 4 states have call predecessors, (123), 4 states have call successors, (123) [2021-11-13 18:36:54,092 INFO L276 IsEmpty]: Start isEmpty. Operand 4919 states and 6335 transitions. [2021-11-13 18:36:54,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1070 [2021-11-13 18:36:54,104 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:36:54,104 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:36:54,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-13 18:36:54,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:36:54,306 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ldv_linux_arch_io_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:36:54,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:36:54,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1253091705, now seen corresponding path program 1 times [2021-11-13 18:36:54,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:36:54,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028090391] [2021-11-13 18:36:54,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:36:54,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:36:54,355 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:36:54,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1804022854] [2021-11-13 18:36:54,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:36:54,356 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:36:54,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:36:54,357 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:36:54,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-13 18:36:55,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:55,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 5669 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 18:36:55,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:36:57,190 INFO L134 CoverageAnalysis]: Checked inductivity of 3926 backedges. 1836 proven. 64 refuted. 0 times theorem prover too weak. 2026 trivial. 0 not checked. [2021-11-13 18:36:57,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:36:59,382 INFO L134 CoverageAnalysis]: Checked inductivity of 3926 backedges. 3 proven. 64 refuted. 0 times theorem prover too weak. 3859 trivial. 0 not checked. [2021-11-13 18:36:59,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:36:59,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028090391] [2021-11-13 18:36:59,382 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:36:59,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804022854] [2021-11-13 18:36:59,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804022854] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:36:59,382 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:36:59,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-11-13 18:36:59,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585410411] [2021-11-13 18:36:59,383 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:36:59,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 18:36:59,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:36:59,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 18:36:59,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:36:59,387 INFO L87 Difference]: Start difference. First operand 4919 states and 6335 transitions. Second operand has 10 states, 10 states have (on average 31.1) internal successors, (311), 10 states have internal predecessors, (311), 9 states have call successors, (139), 2 states have call predecessors, (139), 2 states have return successors, (138), 9 states have call predecessors, (138), 9 states have call successors, (138) [2021-11-13 18:37:01,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:37:01,855 INFO L93 Difference]: Finished difference Result 11777 states and 15554 transitions. [2021-11-13 18:37:01,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 18:37:01,855 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 31.1) internal successors, (311), 10 states have internal predecessors, (311), 9 states have call successors, (139), 2 states have call predecessors, (139), 2 states have return successors, (138), 9 states have call predecessors, (138), 9 states have call successors, (138) Word has length 1069 [2021-11-13 18:37:01,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:37:01,871 INFO L225 Difference]: With dead ends: 11777 [2021-11-13 18:37:01,871 INFO L226 Difference]: Without dead ends: 7224 [2021-11-13 18:37:01,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2136 GetRequests, 2128 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:37:01,879 INFO L933 BasicCegarLoop]: 1259 mSDtfsCounter, 1087 mSDsluCounter, 2979 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 903.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1348 SdHoareTripleChecker+Valid, 4238 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.10ms SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1066.97ms IncrementalHoareTripleChecker+Time [2021-11-13 18:37:01,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1348 Valid, 4238 Invalid, 795 Unknown, 0 Unchecked, 9.10ms Time], IncrementalHoareTripleChecker [287 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 1066.97ms Time] [2021-11-13 18:37:01,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7224 states. [2021-11-13 18:37:02,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7224 to 5319. [2021-11-13 18:37:02,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5319 states, 3514 states have (on average 1.1485486624928856) internal successors, (4036), 3588 states have internal predecessors, (4036), 1415 states have call successors, (1415), 359 states have call predecessors, (1415), 388 states have return successors, (1464), 1437 states have call predecessors, (1464), 1414 states have call successors, (1464) [2021-11-13 18:37:02,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5319 states to 5319 states and 6915 transitions. [2021-11-13 18:37:02,667 INFO L78 Accepts]: Start accepts. Automaton has 5319 states and 6915 transitions. Word has length 1069 [2021-11-13 18:37:02,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:37:02,668 INFO L470 AbstractCegarLoop]: Abstraction has 5319 states and 6915 transitions. [2021-11-13 18:37:02,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 31.1) internal successors, (311), 10 states have internal predecessors, (311), 9 states have call successors, (139), 2 states have call predecessors, (139), 2 states have return successors, (138), 9 states have call predecessors, (138), 9 states have call successors, (138) [2021-11-13 18:37:02,668 INFO L276 IsEmpty]: Start isEmpty. Operand 5319 states and 6915 transitions. [2021-11-13 18:37:02,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1522 [2021-11-13 18:37:02,691 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:37:02,692 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 13, 13, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:37:02,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-13 18:37:02,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:37:02,899 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ldv_linux_arch_io_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:37:02,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:37:02,899 INFO L85 PathProgramCache]: Analyzing trace with hash 446259671, now seen corresponding path program 2 times [2021-11-13 18:37:02,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:37:02,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708741421] [2021-11-13 18:37:02,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:37:02,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:37:02,962 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:37:02,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1565409327] [2021-11-13 18:37:02,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:37:02,963 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:37:02,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:37:02,964 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:37:02,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-13 18:37:11,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 18:37:11,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:37:11,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 7553 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-13 18:37:11,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:37:14,485 INFO L134 CoverageAnalysis]: Checked inductivity of 9784 backedges. 1512 proven. 0 refuted. 0 times theorem prover too weak. 8272 trivial. 0 not checked. [2021-11-13 18:37:14,486 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:37:14,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:37:14,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708741421] [2021-11-13 18:37:14,486 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:37:14,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565409327] [2021-11-13 18:37:14,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565409327] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:37:14,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:37:14,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:37:14,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488554253] [2021-11-13 18:37:14,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:37:14,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:37:14,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:37:14,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:37:14,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:37:14,490 INFO L87 Difference]: Start difference. First operand 5319 states and 6915 transitions. Second operand has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 2 states have call successors, (85), 2 states have call predecessors, (85), 2 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) [2021-11-13 18:37:15,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:37:15,401 INFO L93 Difference]: Finished difference Result 10770 states and 14071 transitions. [2021-11-13 18:37:15,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:37:15,402 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 2 states have call successors, (85), 2 states have call predecessors, (85), 2 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) Word has length 1521 [2021-11-13 18:37:15,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:37:15,415 INFO L225 Difference]: With dead ends: 10770 [2021-11-13 18:37:15,415 INFO L226 Difference]: Without dead ends: 5770 [2021-11-13 18:37:15,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1522 GetRequests, 1519 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:37:15,486 INFO L933 BasicCegarLoop]: 1140 mSDtfsCounter, 125 mSDsluCounter, 2021 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 90.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 3161 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.07ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 112.69ms IncrementalHoareTripleChecker+Time [2021-11-13 18:37:15,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 3161 Invalid, 76 Unknown, 0 Unchecked, 4.07ms Time], IncrementalHoareTripleChecker [52 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 112.69ms Time] [2021-11-13 18:37:15,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5770 states. [2021-11-13 18:37:16,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5770 to 5329. [2021-11-13 18:37:16,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5329 states, 3524 states have (on average 1.1481271282633372) internal successors, (4046), 3598 states have internal predecessors, (4046), 1415 states have call successors, (1415), 359 states have call predecessors, (1415), 388 states have return successors, (1464), 1437 states have call predecessors, (1464), 1414 states have call successors, (1464) [2021-11-13 18:37:16,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5329 states to 5329 states and 6925 transitions. [2021-11-13 18:37:16,175 INFO L78 Accepts]: Start accepts. Automaton has 5329 states and 6925 transitions. Word has length 1521 [2021-11-13 18:37:16,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:37:16,176 INFO L470 AbstractCegarLoop]: Abstraction has 5329 states and 6925 transitions. [2021-11-13 18:37:16,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 2 states have call successors, (85), 2 states have call predecessors, (85), 2 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) [2021-11-13 18:37:16,176 INFO L276 IsEmpty]: Start isEmpty. Operand 5329 states and 6925 transitions. [2021-11-13 18:37:16,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1542 [2021-11-13 18:37:16,196 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:37:16,197 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 13, 13, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:37:16,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-13 18:37:16,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-11-13 18:37:16,397 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ldv_linux_arch_io_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:37:16,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:37:16,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1333531613, now seen corresponding path program 1 times [2021-11-13 18:37:16,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:37:16,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350829862] [2021-11-13 18:37:16,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:37:16,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:37:16,452 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:37:16,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1850608316] [2021-11-13 18:37:16,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:37:16,453 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:37:16,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:37:16,454 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:37:16,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-13 18:37:17,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:37:17,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 7636 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-13 18:37:17,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:37:20,432 INFO L134 CoverageAnalysis]: Checked inductivity of 9838 backedges. 1590 proven. 0 refuted. 0 times theorem prover too weak. 8248 trivial. 0 not checked. [2021-11-13 18:37:20,432 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:37:20,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:37:20,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350829862] [2021-11-13 18:37:20,433 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:37:20,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850608316] [2021-11-13 18:37:20,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850608316] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:37:20,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:37:20,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 18:37:20,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166703649] [2021-11-13 18:37:20,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:37:20,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:37:20,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:37:20,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:37:20,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:37:20,436 INFO L87 Difference]: Start difference. First operand 5329 states and 6925 transitions. Second operand has 8 states, 8 states have (on average 32.25) internal successors, (258), 7 states have internal predecessors, (258), 2 states have call successors, (89), 2 states have call predecessors, (89), 3 states have return successors, (88), 3 states have call predecessors, (88), 2 states have call successors, (88) [2021-11-13 18:37:21,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:37:21,617 INFO L93 Difference]: Finished difference Result 10893 states and 14245 transitions. [2021-11-13 18:37:21,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:37:21,617 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 32.25) internal successors, (258), 7 states have internal predecessors, (258), 2 states have call successors, (89), 2 states have call predecessors, (89), 3 states have return successors, (88), 3 states have call predecessors, (88), 2 states have call successors, (88) Word has length 1541 [2021-11-13 18:37:21,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:37:21,636 INFO L225 Difference]: With dead ends: 10893 [2021-11-13 18:37:21,636 INFO L226 Difference]: Without dead ends: 5875 [2021-11-13 18:37:21,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1547 GetRequests, 1537 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-11-13 18:37:21,647 INFO L933 BasicCegarLoop]: 1111 mSDtfsCounter, 353 mSDsluCounter, 6400 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 232.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 7511 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.47ms SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 272.14ms IncrementalHoareTripleChecker+Time [2021-11-13 18:37:21,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [381 Valid, 7511 Invalid, 329 Unknown, 0 Unchecked, 8.47ms Time], IncrementalHoareTripleChecker [128 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 272.14ms Time] [2021-11-13 18:37:21,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5875 states. [2021-11-13 18:37:22,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5875 to 5344. [2021-11-13 18:37:22,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5344 states, 3539 states have (on average 1.1474992935857586) internal successors, (4061), 3613 states have internal predecessors, (4061), 1415 states have call successors, (1415), 359 states have call predecessors, (1415), 388 states have return successors, (1464), 1437 states have call predecessors, (1464), 1414 states have call successors, (1464) [2021-11-13 18:37:22,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5344 states to 5344 states and 6940 transitions. [2021-11-13 18:37:22,358 INFO L78 Accepts]: Start accepts. Automaton has 5344 states and 6940 transitions. Word has length 1541 [2021-11-13 18:37:22,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:37:22,358 INFO L470 AbstractCegarLoop]: Abstraction has 5344 states and 6940 transitions. [2021-11-13 18:37:22,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.25) internal successors, (258), 7 states have internal predecessors, (258), 2 states have call successors, (89), 2 states have call predecessors, (89), 3 states have return successors, (88), 3 states have call predecessors, (88), 2 states have call successors, (88) [2021-11-13 18:37:22,358 INFO L276 IsEmpty]: Start isEmpty. Operand 5344 states and 6940 transitions. [2021-11-13 18:37:22,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1598 [2021-11-13 18:37:22,380 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:37:22,380 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 22, 22, 22, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 13, 13, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:37:22,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-13 18:37:22,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-11-13 18:37:22,581 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ldv_linux_arch_io_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:37:22,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:37:22,582 INFO L85 PathProgramCache]: Analyzing trace with hash -373470498, now seen corresponding path program 1 times [2021-11-13 18:37:22,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:37:22,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835141328] [2021-11-13 18:37:22,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:37:22,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:37:22,643 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:37:22,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1399139868] [2021-11-13 18:37:22,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:37:22,644 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:37:22,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:37:22,645 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:37:22,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-13 18:37:23,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:37:23,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 7920 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-13 18:37:23,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:37:26,282 INFO L134 CoverageAnalysis]: Checked inductivity of 10228 backedges. 399 proven. 0 refuted. 0 times theorem prover too weak. 9829 trivial. 0 not checked. [2021-11-13 18:37:26,282 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:37:26,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:37:26,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835141328] [2021-11-13 18:37:26,283 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:37:26,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399139868] [2021-11-13 18:37:26,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399139868] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:37:26,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:37:26,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-13 18:37:26,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707877584] [2021-11-13 18:37:26,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:37:26,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-13 18:37:26,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:37:26,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-13 18:37:26,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2021-11-13 18:37:26,285 INFO L87 Difference]: Start difference. First operand 5344 states and 6940 transitions. Second operand has 14 states, 13 states have (on average 19.46153846153846) internal successors, (253), 13 states have internal predecessors, (253), 6 states have call successors, (94), 2 states have call predecessors, (94), 4 states have return successors, (93), 6 states have call predecessors, (93), 6 states have call successors, (93) [2021-11-13 18:37:28,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:37:28,166 INFO L93 Difference]: Finished difference Result 8171 states and 10861 transitions. [2021-11-13 18:37:28,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-13 18:37:28,168 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 19.46153846153846) internal successors, (253), 13 states have internal predecessors, (253), 6 states have call successors, (94), 2 states have call predecessors, (94), 4 states have return successors, (93), 6 states have call predecessors, (93), 6 states have call successors, (93) Word has length 1597 [2021-11-13 18:37:28,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:37:28,183 INFO L225 Difference]: With dead ends: 8171 [2021-11-13 18:37:28,183 INFO L226 Difference]: Without dead ends: 4769 [2021-11-13 18:37:28,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1614 GetRequests, 1588 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=608, Unknown=0, NotChecked=0, Total=756 [2021-11-13 18:37:28,193 INFO L933 BasicCegarLoop]: 1580 mSDtfsCounter, 2069 mSDsluCounter, 16319 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 954 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 793.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2069 SdHoareTripleChecker+Valid, 17899 SdHoareTripleChecker+Invalid, 1528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.26ms SdHoareTripleChecker+Time, 954 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 941.09ms IncrementalHoareTripleChecker+Time [2021-11-13 18:37:28,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2069 Valid, 17899 Invalid, 1528 Unknown, 0 Unchecked, 22.26ms Time], IncrementalHoareTripleChecker [954 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 941.09ms Time] [2021-11-13 18:37:28,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4769 states. [2021-11-13 18:37:28,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4769 to 2211. [2021-11-13 18:37:28,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2211 states, 1463 states have (on average 1.1428571428571428) internal successors, (1672), 1490 states have internal predecessors, (1672), 578 states have call successors, (578), 157 states have call predecessors, (578), 168 states have return successors, (594), 590 states have call predecessors, (594), 577 states have call successors, (594) [2021-11-13 18:37:28,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2211 states to 2211 states and 2844 transitions. [2021-11-13 18:37:28,594 INFO L78 Accepts]: Start accepts. Automaton has 2211 states and 2844 transitions. Word has length 1597 [2021-11-13 18:37:28,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:37:28,595 INFO L470 AbstractCegarLoop]: Abstraction has 2211 states and 2844 transitions. [2021-11-13 18:37:28,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 19.46153846153846) internal successors, (253), 13 states have internal predecessors, (253), 6 states have call successors, (94), 2 states have call predecessors, (94), 4 states have return successors, (93), 6 states have call predecessors, (93), 6 states have call successors, (93) [2021-11-13 18:37:28,595 INFO L276 IsEmpty]: Start isEmpty. Operand 2211 states and 2844 transitions. [2021-11-13 18:37:28,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1934 [2021-11-13 18:37:28,624 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:37:28,624 INFO L514 BasicCegarLoop]: trace histogram [51, 51, 27, 27, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 13, 13, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:37:28,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-13 18:37:28,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-11-13 18:37:28,825 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ldv_linux_arch_io_io_mem_unmapErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:37:28,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:37:28,826 INFO L85 PathProgramCache]: Analyzing trace with hash 341128784, now seen corresponding path program 1 times [2021-11-13 18:37:28,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:37:28,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905244249] [2021-11-13 18:37:28,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:37:28,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:37:28,894 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:37:28,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1254366641] [2021-11-13 18:37:28,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:37:28,895 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:37:28,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:37:28,896 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:37:28,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-13 18:37:31,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:37:32,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 9681 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-13 18:37:32,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:37:35,293 INFO L134 CoverageAnalysis]: Checked inductivity of 13964 backedges. 1971 proven. 3 refuted. 0 times theorem prover too weak. 11990 trivial. 0 not checked. [2021-11-13 18:37:35,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:37:39,408 INFO L134 CoverageAnalysis]: Checked inductivity of 13964 backedges. 112 proven. 12 refuted. 0 times theorem prover too weak. 13840 trivial. 0 not checked. [2021-11-13 18:37:39,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:37:39,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905244249] [2021-11-13 18:37:39,408 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:37:39,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254366641] [2021-11-13 18:37:39,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254366641] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:37:39,409 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:37:39,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2021-11-13 18:37:39,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983949974] [2021-11-13 18:37:39,410 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:37:39,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-13 18:37:39,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:37:39,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-13 18:37:39,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-13 18:37:39,413 INFO L87 Difference]: Start difference. First operand 2211 states and 2844 transitions. Second operand has 14 states, 13 states have (on average 34.30769230769231) internal successors, (446), 12 states have internal predecessors, (446), 5 states have call successors, (228), 2 states have call predecessors, (228), 5 states have return successors, (229), 6 states have call predecessors, (229), 5 states have call successors, (229) [2021-11-13 18:37:40,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:37:40,368 INFO L93 Difference]: Finished difference Result 4328 states and 5604 transitions. [2021-11-13 18:37:40,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 18:37:40,369 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 34.30769230769231) internal successors, (446), 12 states have internal predecessors, (446), 5 states have call successors, (228), 2 states have call predecessors, (228), 5 states have return successors, (229), 6 states have call predecessors, (229), 5 states have call successors, (229) Word has length 1933 [2021-11-13 18:37:40,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:37:40,374 INFO L225 Difference]: With dead ends: 4328 [2021-11-13 18:37:40,374 INFO L226 Difference]: Without dead ends: 2300 [2021-11-13 18:37:40,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3867 GetRequests, 3852 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-11-13 18:37:40,378 INFO L933 BasicCegarLoop]: 1066 mSDtfsCounter, 549 mSDsluCounter, 7044 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 413.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 8110 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.69ms SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 495.67ms IncrementalHoareTripleChecker+Time [2021-11-13 18:37:40,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [651 Valid, 8110 Invalid, 318 Unknown, 0 Unchecked, 10.69ms Time], IncrementalHoareTripleChecker [103 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 495.67ms Time] [2021-11-13 18:37:40,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2300 states. [2021-11-13 18:37:40,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2300 to 2211. [2021-11-13 18:37:40,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2211 states, 1463 states have (on average 1.14149008885851) internal successors, (1670), 1488 states have internal predecessors, (1670), 578 states have call successors, (578), 157 states have call predecessors, (578), 168 states have return successors, (594), 590 states have call predecessors, (594), 577 states have call successors, (594) [2021-11-13 18:37:40,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2211 states to 2211 states and 2842 transitions. [2021-11-13 18:37:40,684 INFO L78 Accepts]: Start accepts. Automaton has 2211 states and 2842 transitions. Word has length 1933 [2021-11-13 18:37:40,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:37:40,684 INFO L470 AbstractCegarLoop]: Abstraction has 2211 states and 2842 transitions. [2021-11-13 18:37:40,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 34.30769230769231) internal successors, (446), 12 states have internal predecessors, (446), 5 states have call successors, (228), 2 states have call predecessors, (228), 5 states have return successors, (229), 6 states have call predecessors, (229), 5 states have call successors, (229) [2021-11-13 18:37:40,684 INFO L276 IsEmpty]: Start isEmpty. Operand 2211 states and 2842 transitions. [2021-11-13 18:37:40,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1938 [2021-11-13 18:37:40,713 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:37:40,714 INFO L514 BasicCegarLoop]: trace histogram [51, 51, 27, 27, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 13, 13, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:37:40,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-13 18:37:40,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-11-13 18:37:40,914 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ldv_linux_arch_io_io_mem_unmapErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:37:40,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:37:40,915 INFO L85 PathProgramCache]: Analyzing trace with hash 435458995, now seen corresponding path program 1 times [2021-11-13 18:37:40,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:37:40,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769957969] [2021-11-13 18:37:40,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:37:40,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:37:40,978 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:37:40,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [243992598] [2021-11-13 18:37:40,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:37:40,978 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:37:40,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:37:40,979 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:37:40,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-13 18:37:52,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:37:52,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 9707 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-13 18:37:52,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:37:55,791 INFO L134 CoverageAnalysis]: Checked inductivity of 13967 backedges. 4778 proven. 0 refuted. 0 times theorem prover too weak. 9189 trivial. 0 not checked. [2021-11-13 18:37:55,791 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:37:55,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:37:55,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769957969] [2021-11-13 18:37:55,791 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:37:55,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243992598] [2021-11-13 18:37:55,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243992598] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:37:55,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:37:55,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 18:37:55,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874072754] [2021-11-13 18:37:55,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:37:55,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:37:55,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:37:55,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:37:55,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:37:55,794 INFO L87 Difference]: Start difference. First operand 2211 states and 2842 transitions. Second operand has 8 states, 8 states have (on average 45.125) internal successors, (361), 6 states have internal predecessors, (361), 3 states have call successors, (134), 2 states have call predecessors, (134), 4 states have return successors, (135), 5 states have call predecessors, (135), 3 states have call successors, (135) [2021-11-13 18:37:56,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:37:56,268 INFO L93 Difference]: Finished difference Result 4383 states and 5705 transitions. [2021-11-13 18:37:56,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 18:37:56,271 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 45.125) internal successors, (361), 6 states have internal predecessors, (361), 3 states have call successors, (134), 2 states have call predecessors, (134), 4 states have return successors, (135), 5 states have call predecessors, (135), 3 states have call successors, (135) Word has length 1937 [2021-11-13 18:37:56,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:37:56,276 INFO L225 Difference]: With dead ends: 4383 [2021-11-13 18:37:56,276 INFO L226 Difference]: Without dead ends: 2355 [2021-11-13 18:37:56,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1937 GetRequests, 1930 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:37:56,280 INFO L933 BasicCegarLoop]: 1049 mSDtfsCounter, 45 mSDsluCounter, 6221 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 7270 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.92ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 88.97ms IncrementalHoareTripleChecker+Time [2021-11-13 18:37:56,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 7270 Invalid, 39 Unknown, 0 Unchecked, 7.92ms Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 88.97ms Time] [2021-11-13 18:37:56,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2355 states. [2021-11-13 18:37:56,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2355 to 2227. [2021-11-13 18:37:56,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2227 states, 1474 states have (on average 1.1404341926729986) internal successors, (1681), 1498 states have internal predecessors, (1681), 580 states have call successors, (580), 157 states have call predecessors, (580), 171 states have return successors, (633), 596 states have call predecessors, (633), 579 states have call successors, (633) [2021-11-13 18:37:56,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2227 states to 2227 states and 2894 transitions. [2021-11-13 18:37:56,586 INFO L78 Accepts]: Start accepts. Automaton has 2227 states and 2894 transitions. Word has length 1937 [2021-11-13 18:37:56,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:37:56,587 INFO L470 AbstractCegarLoop]: Abstraction has 2227 states and 2894 transitions. [2021-11-13 18:37:56,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 45.125) internal successors, (361), 6 states have internal predecessors, (361), 3 states have call successors, (134), 2 states have call predecessors, (134), 4 states have return successors, (135), 5 states have call predecessors, (135), 3 states have call successors, (135) [2021-11-13 18:37:56,587 INFO L276 IsEmpty]: Start isEmpty. Operand 2227 states and 2894 transitions. [2021-11-13 18:37:56,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2226 [2021-11-13 18:37:56,624 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:37:56,625 INFO L514 BasicCegarLoop]: trace histogram [56, 56, 56, 51, 51, 27, 27, 25, 25, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 13, 13, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:37:56,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-13 18:37:56,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-11-13 18:37:56,825 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ldv_linux_arch_io_io_mem_unmapErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:37:56,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:37:56,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1518856301, now seen corresponding path program 1 times [2021-11-13 18:37:56,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:37:56,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65945526] [2021-11-13 18:37:56,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:37:56,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:37:56,895 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:37:56,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1384566837] [2021-11-13 18:37:56,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:37:56,896 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:37:56,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:37:56,897 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:37:56,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-13 18:38:31,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:38:31,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 10571 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:38:31,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:38:34,824 INFO L134 CoverageAnalysis]: Checked inductivity of 21059 backedges. 6369 proven. 0 refuted. 0 times theorem prover too weak. 14690 trivial. 0 not checked. [2021-11-13 18:38:34,824 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:38:34,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:38:34,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65945526] [2021-11-13 18:38:34,824 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:38:34,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384566837] [2021-11-13 18:38:34,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384566837] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:38:34,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:38:34,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:38:34,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060733696] [2021-11-13 18:38:34,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:38:34,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:38:34,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:38:34,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:38:34,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:38:34,827 INFO L87 Difference]: Start difference. First operand 2227 states and 2894 transitions. Second operand has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 2 states have call successors, (134), 2 states have call predecessors, (134), 3 states have return successors, (133), 2 states have call predecessors, (133), 2 states have call successors, (133) [2021-11-13 18:38:35,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:38:35,206 INFO L93 Difference]: Finished difference Result 4277 states and 5597 transitions. [2021-11-13 18:38:35,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:38:35,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 2 states have call successors, (134), 2 states have call predecessors, (134), 3 states have return successors, (133), 2 states have call predecessors, (133), 2 states have call successors, (133) Word has length 2225 [2021-11-13 18:38:35,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:38:35,211 INFO L225 Difference]: With dead ends: 4277 [2021-11-13 18:38:35,211 INFO L226 Difference]: Without dead ends: 2229 [2021-11-13 18:38:35,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2225 GetRequests, 2222 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:38:35,215 INFO L933 BasicCegarLoop]: 968 mSDtfsCounter, 2 mSDsluCounter, 1934 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2902 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.34ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.88ms IncrementalHoareTripleChecker+Time [2021-11-13 18:38:35,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 2902 Invalid, 7 Unknown, 0 Unchecked, 3.34ms Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 14.88ms Time] [2021-11-13 18:38:35,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2229 states. [2021-11-13 18:38:35,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2229 to 2229. [2021-11-13 18:38:35,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2229 states, 1476 states have (on average 1.1402439024390243) internal successors, (1683), 1500 states have internal predecessors, (1683), 580 states have call successors, (580), 157 states have call predecessors, (580), 171 states have return successors, (633), 596 states have call predecessors, (633), 579 states have call successors, (633) [2021-11-13 18:38:35,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2229 states to 2229 states and 2896 transitions. [2021-11-13 18:38:35,520 INFO L78 Accepts]: Start accepts. Automaton has 2229 states and 2896 transitions. Word has length 2225 [2021-11-13 18:38:35,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:38:35,521 INFO L470 AbstractCegarLoop]: Abstraction has 2229 states and 2896 transitions. [2021-11-13 18:38:35,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 2 states have call successors, (134), 2 states have call predecessors, (134), 3 states have return successors, (133), 2 states have call predecessors, (133), 2 states have call successors, (133) [2021-11-13 18:38:35,522 INFO L276 IsEmpty]: Start isEmpty. Operand 2229 states and 2896 transitions. [2021-11-13 18:38:35,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2234 [2021-11-13 18:38:35,564 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:38:35,565 INFO L514 BasicCegarLoop]: trace histogram [56, 56, 56, 51, 51, 27, 27, 25, 25, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 13, 13, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:38:35,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-13 18:38:35,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-11-13 18:38:35,766 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ldv_linux_arch_io_io_mem_unmapErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:38:35,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:38:35,767 INFO L85 PathProgramCache]: Analyzing trace with hash -250177837, now seen corresponding path program 1 times [2021-11-13 18:38:35,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:38:35,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467094340] [2021-11-13 18:38:35,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:38:35,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:38:35,836 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:38:35,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [131196251] [2021-11-13 18:38:35,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:38:35,837 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:38:35,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:38:35,838 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:38:35,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-13 18:39:32,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:32,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 10619 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 18:39:32,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:39:36,447 INFO L134 CoverageAnalysis]: Checked inductivity of 21151 backedges. 6390 proven. 1 refuted. 0 times theorem prover too weak. 14760 trivial. 0 not checked. [2021-11-13 18:39:36,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:39:40,854 INFO L134 CoverageAnalysis]: Checked inductivity of 21151 backedges. 99 proven. 43 refuted. 0 times theorem prover too weak. 21009 trivial. 0 not checked. [2021-11-13 18:39:40,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:39:40,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467094340] [2021-11-13 18:39:40,855 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:39:40,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131196251] [2021-11-13 18:39:40,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131196251] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:39:40,855 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:39:40,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-13 18:39:40,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236382026] [2021-11-13 18:39:40,857 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:39:40,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:39:40,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:39:40,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:39:40,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:39:40,861 INFO L87 Difference]: Start difference. First operand 2229 states and 2896 transitions. Second operand has 8 states, 8 states have (on average 56.25) internal successors, (450), 8 states have internal predecessors, (450), 2 states have call successors, (219), 2 states have call predecessors, (219), 4 states have return successors, (219), 2 states have call predecessors, (219), 2 states have call successors, (219) [2021-11-13 18:39:41,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:39:41,356 INFO L93 Difference]: Finished difference Result 4289 states and 5627 transitions. [2021-11-13 18:39:41,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:39:41,358 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 56.25) internal successors, (450), 8 states have internal predecessors, (450), 2 states have call successors, (219), 2 states have call predecessors, (219), 4 states have return successors, (219), 2 states have call predecessors, (219), 2 states have call successors, (219) Word has length 2233 [2021-11-13 18:39:41,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:39:41,363 INFO L225 Difference]: With dead ends: 4289 [2021-11-13 18:39:41,363 INFO L226 Difference]: Without dead ends: 2235 [2021-11-13 18:39:41,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4466 GetRequests, 4458 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:39:41,367 INFO L933 BasicCegarLoop]: 967 mSDtfsCounter, 8 mSDsluCounter, 4827 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 5794 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.15ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55.92ms IncrementalHoareTripleChecker+Time [2021-11-13 18:39:41,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 5794 Invalid, 31 Unknown, 0 Unchecked, 6.15ms Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 55.92ms Time] [2021-11-13 18:39:41,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2235 states. [2021-11-13 18:39:41,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2235 to 2235. [2021-11-13 18:39:41,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2235 states, 1482 states have (on average 1.139676113360324) internal successors, (1689), 1506 states have internal predecessors, (1689), 580 states have call successors, (580), 157 states have call predecessors, (580), 171 states have return successors, (633), 596 states have call predecessors, (633), 579 states have call successors, (633) [2021-11-13 18:39:41,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2235 states to 2235 states and 2902 transitions. [2021-11-13 18:39:41,744 INFO L78 Accepts]: Start accepts. Automaton has 2235 states and 2902 transitions. Word has length 2233 [2021-11-13 18:39:41,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:39:41,745 INFO L470 AbstractCegarLoop]: Abstraction has 2235 states and 2902 transitions. [2021-11-13 18:39:41,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 56.25) internal successors, (450), 8 states have internal predecessors, (450), 2 states have call successors, (219), 2 states have call predecessors, (219), 4 states have return successors, (219), 2 states have call predecessors, (219), 2 states have call successors, (219) [2021-11-13 18:39:41,745 INFO L276 IsEmpty]: Start isEmpty. Operand 2235 states and 2902 transitions. [2021-11-13 18:39:41,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2098 [2021-11-13 18:39:41,778 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:39:41,779 INFO L514 BasicCegarLoop]: trace histogram [51, 51, 36, 36, 36, 32, 27, 27, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 15, 15, 13, 13, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:39:41,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-13 18:39:41,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:39:41,980 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ldv_linux_arch_io_io_mem_unmapErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:39:41,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:39:41,980 INFO L85 PathProgramCache]: Analyzing trace with hash 2048201139, now seen corresponding path program 1 times [2021-11-13 18:39:41,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:39:41,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645835093] [2021-11-13 18:39:41,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:39:41,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:39:42,042 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:39:42,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1600026038] [2021-11-13 18:39:42,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:39:42,043 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:39:42,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:39:42,044 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:39:42,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-13 18:40:08,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:40:08,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 10283 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-13 18:40:08,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:40:11,172 INFO L134 CoverageAnalysis]: Checked inductivity of 16911 backedges. 3312 proven. 39 refuted. 0 times theorem prover too weak. 13560 trivial. 0 not checked. [2021-11-13 18:40:11,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:40:15,373 INFO L134 CoverageAnalysis]: Checked inductivity of 16911 backedges. 220 proven. 14 refuted. 0 times theorem prover too weak. 16677 trivial. 0 not checked. [2021-11-13 18:40:15,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:40:15,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645835093] [2021-11-13 18:40:15,373 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:40:15,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600026038] [2021-11-13 18:40:15,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600026038] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:40:15,373 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:40:15,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2021-11-13 18:40:15,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919548162] [2021-11-13 18:40:15,374 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:40:15,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-13 18:40:15,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:40:15,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-13 18:40:15,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-13 18:40:15,377 INFO L87 Difference]: Start difference. First operand 2235 states and 2902 transitions. Second operand has 15 states, 15 states have (on average 30.0) internal successors, (450), 11 states have internal predecessors, (450), 4 states have call successors, (213), 2 states have call predecessors, (213), 6 states have return successors, (216), 8 states have call predecessors, (216), 4 states have call successors, (216) [2021-11-13 18:40:16,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:40:16,081 INFO L93 Difference]: Finished difference Result 4543 states and 5951 transitions. [2021-11-13 18:40:16,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 18:40:16,082 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 30.0) internal successors, (450), 11 states have internal predecessors, (450), 4 states have call successors, (213), 2 states have call predecessors, (213), 6 states have return successors, (216), 8 states have call predecessors, (216), 4 states have call successors, (216) Word has length 2097 [2021-11-13 18:40:16,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:40:16,087 INFO L225 Difference]: With dead ends: 4543 [2021-11-13 18:40:16,087 INFO L226 Difference]: Without dead ends: 2491 [2021-11-13 18:40:16,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4193 GetRequests, 4179 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-11-13 18:40:16,091 INFO L933 BasicCegarLoop]: 1116 mSDtfsCounter, 127 mSDsluCounter, 8842 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 223.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 9958 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.42ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 269.79ms IncrementalHoareTripleChecker+Time [2021-11-13 18:40:16,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 9958 Invalid, 109 Unknown, 0 Unchecked, 9.42ms Time], IncrementalHoareTripleChecker [24 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 269.79ms Time] [2021-11-13 18:40:16,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2491 states. [2021-11-13 18:40:16,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2491 to 2239. [2021-11-13 18:40:16,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2239 states, 1486 states have (on average 1.139300134589502) internal successors, (1693), 1508 states have internal predecessors, (1693), 580 states have call successors, (580), 157 states have call predecessors, (580), 171 states have return successors, (633), 598 states have call predecessors, (633), 579 states have call successors, (633) [2021-11-13 18:40:16,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2239 states to 2239 states and 2906 transitions. [2021-11-13 18:40:16,404 INFO L78 Accepts]: Start accepts. Automaton has 2239 states and 2906 transitions. Word has length 2097 [2021-11-13 18:40:16,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:40:16,405 INFO L470 AbstractCegarLoop]: Abstraction has 2239 states and 2906 transitions. [2021-11-13 18:40:16,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 30.0) internal successors, (450), 11 states have internal predecessors, (450), 4 states have call successors, (213), 2 states have call predecessors, (213), 6 states have return successors, (216), 8 states have call predecessors, (216), 4 states have call successors, (216) [2021-11-13 18:40:16,405 INFO L276 IsEmpty]: Start isEmpty. Operand 2239 states and 2906 transitions. [2021-11-13 18:40:16,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2258 [2021-11-13 18:40:16,443 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:40:16,444 INFO L514 BasicCegarLoop]: trace histogram [56, 56, 56, 51, 51, 32, 27, 27, 25, 25, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 13, 13, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:40:16,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-13 18:40:16,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2021-11-13 18:40:16,644 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ldv_linux_arch_io_io_mem_unmapErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-13 18:40:16,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:40:16,645 INFO L85 PathProgramCache]: Analyzing trace with hash -923011693, now seen corresponding path program 2 times [2021-11-13 18:40:16,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:40:16,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121849557] [2021-11-13 18:40:16,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:40:16,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:40:16,710 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:40:16,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [356627348] [2021-11-13 18:40:16,710 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:40:16,711 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:40:16,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:40:16,711 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:40:16,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b919a3-b863-4fa5-8b98-737289325c28/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process