./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 01d4ebb86f2bde0df0d47bbd5d9b632b620f2501e68770553e85fb2bb5a7d15a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:39:05,318 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:39:05,322 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:39:05,377 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:39:05,378 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:39:05,384 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:39:05,387 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:39:05,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:39:05,395 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:39:05,403 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:39:05,404 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:39:05,405 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:39:05,406 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:39:05,409 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:39:05,411 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:39:05,417 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:39:05,419 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:39:05,422 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:39:05,424 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:39:05,429 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:39:05,435 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:39:05,437 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:39:05,438 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:39:05,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:39:05,446 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:39:05,447 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:39:05,447 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:39:05,448 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:39:05,449 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:39:05,450 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:39:05,450 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:39:05,451 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:39:05,451 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:39:05,452 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:39:05,453 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:39:05,453 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:39:05,454 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:39:05,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:39:05,454 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:39:05,455 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:39:05,456 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:39:05,457 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-20 06:39:05,499 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:39:05,502 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:39:05,503 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:39:05,503 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:39:05,510 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:39:05,511 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:39:05,512 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:39:05,512 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:39:05,512 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:39:05,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:39:05,513 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:39:05,514 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:39:05,514 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:39:05,514 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:39:05,514 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:39:05,515 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:39:05,515 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:39:05,515 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:39:05,515 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:39:05,516 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:39:05,516 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:39:05,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:39:05,516 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:39:05,516 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:39:05,517 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:39:05,517 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:39:05,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:39:05,517 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:39:05,518 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:39:05,519 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:39:05,519 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:39:05,520 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_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01d4ebb86f2bde0df0d47bbd5d9b632b620f2501e68770553e85fb2bb5a7d15a [2021-11-20 06:39:05,769 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:39:05,801 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:39:05,804 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:39:05,805 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:39:05,806 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:39:05,807 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2021-11-20 06:39:05,898 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/data/1efe1a134/087a6ced4fb6426c86192fe6c468cae3/FLAG619a100b3 [2021-11-20 06:39:06,671 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:39:06,672 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2021-11-20 06:39:06,729 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/data/1efe1a134/087a6ced4fb6426c86192fe6c468cae3/FLAG619a100b3 [2021-11-20 06:39:07,201 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/data/1efe1a134/087a6ced4fb6426c86192fe6c468cae3 [2021-11-20 06:39:07,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:39:07,204 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:39:07,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:39:07,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:39:07,210 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:39:07,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:39:07" (1/1) ... [2021-11-20 06:39:07,212 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b76ec03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:07, skipping insertion in model container [2021-11-20 06:39:07,213 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:39:07" (1/1) ... [2021-11-20 06:39:07,220 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:39:07,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:39:08,557 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i[191320,191333] [2021-11-20 06:39:08,599 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:39:08,666 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:39:08,987 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i[191320,191333] [2021-11-20 06:39:08,996 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:39:09,214 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:39:09,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:09 WrapperNode [2021-11-20 06:39:09,216 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:39:09,217 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:39:09,218 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:39:09,218 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:39:09,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:09" (1/1) ... [2021-11-20 06:39:09,296 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:09" (1/1) ... [2021-11-20 06:39:09,379 INFO L137 Inliner]: procedures = 133, calls = 733, calls flagged for inlining = 54, calls inlined = 44, statements flattened = 1375 [2021-11-20 06:39:09,381 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:39:09,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:39:09,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:39:09,382 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:39:09,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:09" (1/1) ... [2021-11-20 06:39:09,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:09" (1/1) ... [2021-11-20 06:39:09,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:09" (1/1) ... [2021-11-20 06:39:09,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:09" (1/1) ... [2021-11-20 06:39:09,483 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:09" (1/1) ... [2021-11-20 06:39:09,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:09" (1/1) ... [2021-11-20 06:39:09,504 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:09" (1/1) ... [2021-11-20 06:39:09,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:39:09,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:39:09,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:39:09,523 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:39:09,524 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:09" (1/1) ... [2021-11-20 06:39:09,533 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:39:09,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:39:09,557 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:39:09,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:39:09,604 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-20 06:39:09,604 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-20 06:39:09,604 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_init [2021-11-20 06:39:09,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_init [2021-11-20 06:39:09,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-20 06:39:09,605 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-11-20 06:39:09,605 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-11-20 06:39:09,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-20 06:39:09,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-20 06:39:09,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 06:39:09,605 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-20 06:39:09,606 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-20 06:39:09,606 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_control_cmd [2021-11-20 06:39:09,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_control_cmd [2021-11-20 06:39:09,606 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-20 06:39:09,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-20 06:39:09,606 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 06:39:09,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 06:39:09,607 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_exit [2021-11-20 06:39:09,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_exit [2021-11-20 06:39:09,607 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2021-11-20 06:39:09,607 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2021-11-20 06:39:09,607 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-20 06:39:09,607 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-20 06:39:09,608 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2021-11-20 06:39:09,608 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2021-11-20 06:39:09,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 06:39:09,608 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2021-11-20 06:39:09,608 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2021-11-20 06:39:09,608 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2021-11-20 06:39:09,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2021-11-20 06:39:09,608 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2021-11-20 06:39:09,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2021-11-20 06:39:09,608 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-20 06:39:09,609 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-20 06:39:09,609 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_command_msg [2021-11-20 06:39:09,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_command_msg [2021-11-20 06:39:09,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 06:39:09,609 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_all_urbs [2021-11-20 06:39:09,609 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_all_urbs [2021-11-20 06:39:09,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:39:09,610 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-20 06:39:09,610 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-20 06:39:09,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 06:39:09,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 06:39:09,610 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_write_mode [2021-11-20 06:39:09,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_write_mode [2021-11-20 06:39:09,611 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2021-11-20 06:39:09,611 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2021-11-20 06:39:09,611 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2021-11-20 06:39:09,611 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2021-11-20 06:39:09,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 06:39:09,612 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-20 06:39:09,612 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-20 06:39:09,612 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-11-20 06:39:09,612 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-11-20 06:39:09,612 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2021-11-20 06:39:09,612 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2021-11-20 06:39:09,613 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2021-11-20 06:39:09,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2021-11-20 06:39:09,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 06:39:09,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 06:39:09,613 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-20 06:39:09,613 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-20 06:39:09,614 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2021-11-20 06:39:09,614 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2021-11-20 06:39:09,614 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-20 06:39:09,614 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-20 06:39:09,614 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2021-11-20 06:39:09,614 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2021-11-20 06:39:09,615 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-11-20 06:39:09,615 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-11-20 06:39:09,615 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-20 06:39:09,615 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-20 06:39:09,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2021-11-20 06:39:09,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2021-11-20 06:39:09,616 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2021-11-20 06:39:09,616 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2021-11-20 06:39:09,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:39:09,616 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2021-11-20 06:39:09,616 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2021-11-20 06:39:09,616 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2021-11-20 06:39:09,617 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2021-11-20 06:39:09,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-20 06:39:09,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:39:09,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:39:09,982 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:39:09,984 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:39:10,371 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2021-11-20 06:39:10,532 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-20 06:39:12,914 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false; [2021-11-20 06:39:12,914 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false; [2021-11-20 06:39:12,947 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:39:12,961 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:39:12,961 INFO L301 CfgBuilder]: Removed 13 assume(true) statements. [2021-11-20 06:39:12,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:39:12 BoogieIcfgContainer [2021-11-20 06:39:12,965 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:39:12,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:39:12,967 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:39:12,971 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:39:12,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:39:07" (1/3) ... [2021-11-20 06:39:12,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b553ce2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:39:12, skipping insertion in model container [2021-11-20 06:39:12,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:39:09" (2/3) ... [2021-11-20 06:39:12,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b553ce2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:39:12, skipping insertion in model container [2021-11-20 06:39:12,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:39:12" (3/3) ... [2021-11-20 06:39:12,974 INFO L111 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2021-11-20 06:39:12,979 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:39:12,980 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 06:39:13,058 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:39:13,067 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 06:39:13,067 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 06:39:13,120 INFO L276 IsEmpty]: Start isEmpty. Operand has 431 states, 304 states have (on average 1.3519736842105263) internal successors, (411), 316 states have internal predecessors, (411), 91 states have call successors, (91), 35 states have call predecessors, (91), 34 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2021-11-20 06:39:13,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 06:39:13,125 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:39:13,126 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:39:13,127 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:39:13,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:39:13,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1517292025, now seen corresponding path program 1 times [2021-11-20 06:39:13,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:39:13,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245108165] [2021-11-20 06:39:13,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:13,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:39:13,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:13,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:39:13,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:13,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:39:13,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:39:13,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245108165] [2021-11-20 06:39:13,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245108165] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:39:13,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:39:13,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:39:13,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336796348] [2021-11-20 06:39:13,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:39:13,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:39:13,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:39:13,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:39:13,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:39:13,794 INFO L87 Difference]: Start difference. First operand has 431 states, 304 states have (on average 1.3519736842105263) internal successors, (411), 316 states have internal predecessors, (411), 91 states have call successors, (91), 35 states have call predecessors, (91), 34 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:39:13,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:39:13,969 INFO L93 Difference]: Finished difference Result 1253 states and 1768 transitions. [2021-11-20 06:39:13,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:39:13,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-11-20 06:39:13,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:39:14,007 INFO L225 Difference]: With dead ends: 1253 [2021-11-20 06:39:14,008 INFO L226 Difference]: Without dead ends: 824 [2021-11-20 06:39:14,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:39:14,023 INFO L933 BasicCegarLoop]: 695 mSDtfsCounter, 545 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:39:14,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [545 Valid, 1229 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:39:14,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2021-11-20 06:39:14,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 820. [2021-11-20 06:39:14,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 581 states have (on average 1.2581755593803787) internal successors, (731), 593 states have internal predecessors, (731), 173 states have call successors, (173), 66 states have call predecessors, (173), 65 states have return successors, (172), 165 states have call predecessors, (172), 169 states have call successors, (172) [2021-11-20 06:39:14,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1076 transitions. [2021-11-20 06:39:14,213 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1076 transitions. Word has length 16 [2021-11-20 06:39:14,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:39:14,213 INFO L470 AbstractCegarLoop]: Abstraction has 820 states and 1076 transitions. [2021-11-20 06:39:14,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:39:14,214 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1076 transitions. [2021-11-20 06:39:14,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 06:39:14,215 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:39:14,215 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:39:14,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 06:39:14,215 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:39:14,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:39:14,218 INFO L85 PathProgramCache]: Analyzing trace with hash 208359179, now seen corresponding path program 1 times [2021-11-20 06:39:14,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:39:14,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618237381] [2021-11-20 06:39:14,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:14,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:39:14,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:14,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:39:14,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:14,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:39:14,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:39:14,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618237381] [2021-11-20 06:39:14,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618237381] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:39:14,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:39:14,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:39:14,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993230386] [2021-11-20 06:39:14,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:39:14,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:39:14,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:39:14,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:39:14,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:39:14,398 INFO L87 Difference]: Start difference. First operand 820 states and 1076 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:39:14,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:39:14,536 INFO L93 Difference]: Finished difference Result 2433 states and 3207 transitions. [2021-11-20 06:39:14,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:39:14,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-20 06:39:14,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:39:14,554 INFO L225 Difference]: With dead ends: 2433 [2021-11-20 06:39:14,554 INFO L226 Difference]: Without dead ends: 1617 [2021-11-20 06:39:14,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:39:14,564 INFO L933 BasicCegarLoop]: 630 mSDtfsCounter, 535 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:39:14,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [535 Valid, 1161 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:39:14,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1617 states. [2021-11-20 06:39:14,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1617 to 1610. [2021-11-20 06:39:14,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1610 states, 1141 states have (on average 1.2541630148992111) internal successors, (1431), 1160 states have internal predecessors, (1431), 340 states have call successors, (340), 129 states have call predecessors, (340), 128 states have return successors, (346), 328 states have call predecessors, (346), 336 states have call successors, (346) [2021-11-20 06:39:14,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1610 states to 1610 states and 2117 transitions. [2021-11-20 06:39:14,682 INFO L78 Accepts]: Start accepts. Automaton has 1610 states and 2117 transitions. Word has length 17 [2021-11-20 06:39:14,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:39:14,683 INFO L470 AbstractCegarLoop]: Abstraction has 1610 states and 2117 transitions. [2021-11-20 06:39:14,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:39:14,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1610 states and 2117 transitions. [2021-11-20 06:39:14,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-20 06:39:14,695 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:39:14,695 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:39:14,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 06:39:14,695 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:39:14,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:39:14,706 INFO L85 PathProgramCache]: Analyzing trace with hash 26582145, now seen corresponding path program 1 times [2021-11-20 06:39:14,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:39:14,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176610968] [2021-11-20 06:39:14,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:14,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:39:14,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:14,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:39:14,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:14,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-20 06:39:14,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:14,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-20 06:39:14,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:14,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-11-20 06:39:14,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:14,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-20 06:39:14,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:14,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:39:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:14,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:39:14,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:14,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-20 06:39:14,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:14,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:39:14,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:39:14,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176610968] [2021-11-20 06:39:14,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176610968] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:39:14,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:39:14,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:39:14,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478699483] [2021-11-20 06:39:14,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:39:14,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:39:14,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:39:14,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:39:14,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:39:14,992 INFO L87 Difference]: Start difference. First operand 1610 states and 2117 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-20 06:39:18,895 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:39:18,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:39:18,942 INFO L93 Difference]: Finished difference Result 4036 states and 5568 transitions. [2021-11-20 06:39:18,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:39:18,943 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2021-11-20 06:39:18,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:39:18,961 INFO L225 Difference]: With dead ends: 4036 [2021-11-20 06:39:18,962 INFO L226 Difference]: Without dead ends: 2437 [2021-11-20 06:39:18,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:39:18,968 INFO L933 BasicCegarLoop]: 583 mSDtfsCounter, 439 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 1399 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-20 06:39:18,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [514 Valid, 1399 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-11-20 06:39:18,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2437 states. [2021-11-20 06:39:19,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2437 to 2313. [2021-11-20 06:39:19,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2313 states, 1640 states have (on average 1.2945121951219511) internal successors, (2123), 1675 states have internal predecessors, (2123), 544 states have call successors, (544), 129 states have call predecessors, (544), 128 states have return successors, (558), 524 states have call predecessors, (558), 540 states have call successors, (558) [2021-11-20 06:39:19,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2313 states to 2313 states and 3225 transitions. [2021-11-20 06:39:19,104 INFO L78 Accepts]: Start accepts. Automaton has 2313 states and 3225 transitions. Word has length 71 [2021-11-20 06:39:19,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:39:19,105 INFO L470 AbstractCegarLoop]: Abstraction has 2313 states and 3225 transitions. [2021-11-20 06:39:19,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-20 06:39:19,105 INFO L276 IsEmpty]: Start isEmpty. Operand 2313 states and 3225 transitions. [2021-11-20 06:39:19,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-20 06:39:19,109 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:39:19,110 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:39:19,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 06:39:19,110 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:39:19,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:39:19,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1975701364, now seen corresponding path program 1 times [2021-11-20 06:39:19,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:39:19,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594468143] [2021-11-20 06:39:19,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:19,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:39:19,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:19,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:39:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:19,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 06:39:19,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:19,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-20 06:39:19,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:19,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:39:19,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:19,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-20 06:39:19,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:19,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-20 06:39:19,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:19,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-20 06:39:19,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:19,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:39:19,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:39:19,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594468143] [2021-11-20 06:39:19,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594468143] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:39:19,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:39:19,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 06:39:19,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537213698] [2021-11-20 06:39:19,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:39:19,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:39:19,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:39:19,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:39:19,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:39:19,347 INFO L87 Difference]: Start difference. First operand 2313 states and 3225 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-20 06:39:20,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:39:20,734 INFO L93 Difference]: Finished difference Result 6341 states and 9295 transitions. [2021-11-20 06:39:20,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:39:20,735 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 68 [2021-11-20 06:39:20,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:39:20,768 INFO L225 Difference]: With dead ends: 6341 [2021-11-20 06:39:20,769 INFO L226 Difference]: Without dead ends: 4040 [2021-11-20 06:39:20,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:39:20,787 INFO L933 BasicCegarLoop]: 853 mSDtfsCounter, 565 mSDsluCounter, 1876 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 2729 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:39:20,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [569 Valid, 2729 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-20 06:39:20,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4040 states. [2021-11-20 06:39:21,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4040 to 2347. [2021-11-20 06:39:21,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2347 states, 1668 states have (on average 1.290767386091127) internal successors, (2153), 1705 states have internal predecessors, (2153), 544 states have call successors, (544), 129 states have call predecessors, (544), 134 states have return successors, (580), 528 states have call predecessors, (580), 540 states have call successors, (580) [2021-11-20 06:39:21,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2347 states to 2347 states and 3277 transitions. [2021-11-20 06:39:21,037 INFO L78 Accepts]: Start accepts. Automaton has 2347 states and 3277 transitions. Word has length 68 [2021-11-20 06:39:21,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:39:21,037 INFO L470 AbstractCegarLoop]: Abstraction has 2347 states and 3277 transitions. [2021-11-20 06:39:21,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-20 06:39:21,038 INFO L276 IsEmpty]: Start isEmpty. Operand 2347 states and 3277 transitions. [2021-11-20 06:39:21,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-20 06:39:21,041 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:39:21,041 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:39:21,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 06:39:21,042 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:39:21,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:39:21,042 INFO L85 PathProgramCache]: Analyzing trace with hash -710406787, now seen corresponding path program 1 times [2021-11-20 06:39:21,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:39:21,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988776854] [2021-11-20 06:39:21,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:21,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:39:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:21,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:39:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:21,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 06:39:21,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:21,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-20 06:39:21,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:21,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:39:21,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:21,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-20 06:39:21,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:21,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-20 06:39:21,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:21,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-20 06:39:21,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:21,278 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:39:21,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:39:21,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988776854] [2021-11-20 06:39:21,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988776854] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:39:21,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:39:21,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 06:39:21,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848992114] [2021-11-20 06:39:21,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:39:21,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 06:39:21,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:39:21,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 06:39:21,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-20 06:39:21,281 INFO L87 Difference]: Start difference. First operand 2347 states and 3277 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-20 06:39:23,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:39:23,203 INFO L93 Difference]: Finished difference Result 8245 states and 12363 transitions. [2021-11-20 06:39:23,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 06:39:23,204 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 69 [2021-11-20 06:39:23,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:39:23,261 INFO L225 Difference]: With dead ends: 8245 [2021-11-20 06:39:23,261 INFO L226 Difference]: Without dead ends: 5910 [2021-11-20 06:39:23,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-11-20 06:39:23,274 INFO L933 BasicCegarLoop]: 1091 mSDtfsCounter, 1018 mSDsluCounter, 4183 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 490 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1088 SdHoareTripleChecker+Valid, 5274 SdHoareTripleChecker+Invalid, 1500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 490 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:39:23,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1088 Valid, 5274 Invalid, 1500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [490 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-20 06:39:23,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5910 states. [2021-11-20 06:39:23,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5910 to 2363. [2021-11-20 06:39:23,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2363 states, 1684 states have (on average 1.2880047505938241) internal successors, (2169), 1721 states have internal predecessors, (2169), 544 states have call successors, (544), 129 states have call predecessors, (544), 134 states have return successors, (580), 528 states have call predecessors, (580), 540 states have call successors, (580) [2021-11-20 06:39:23,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2363 states to 2363 states and 3293 transitions. [2021-11-20 06:39:23,591 INFO L78 Accepts]: Start accepts. Automaton has 2363 states and 3293 transitions. Word has length 69 [2021-11-20 06:39:23,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:39:23,591 INFO L470 AbstractCegarLoop]: Abstraction has 2363 states and 3293 transitions. [2021-11-20 06:39:23,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-20 06:39:23,592 INFO L276 IsEmpty]: Start isEmpty. Operand 2363 states and 3293 transitions. [2021-11-20 06:39:23,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-20 06:39:23,597 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:39:23,597 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:39:23,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 06:39:23,597 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:39:23,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:39:23,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1810974370, now seen corresponding path program 1 times [2021-11-20 06:39:23,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:39:23,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895276588] [2021-11-20 06:39:23,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:23,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:39:23,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:23,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:39:23,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:23,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 06:39:23,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:23,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-20 06:39:23,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:23,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:39:23,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:23,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-20 06:39:23,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:23,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-20 06:39:23,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:23,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-20 06:39:23,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:23,990 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:39:23,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:39:23,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895276588] [2021-11-20 06:39:23,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895276588] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:39:23,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:39:23,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 06:39:23,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055597360] [2021-11-20 06:39:23,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:39:23,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 06:39:23,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:39:23,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 06:39:23,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:39:23,998 INFO L87 Difference]: Start difference. First operand 2363 states and 3293 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-20 06:39:25,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:39:25,560 INFO L93 Difference]: Finished difference Result 3619 states and 5114 transitions. [2021-11-20 06:39:25,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 06:39:25,561 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 69 [2021-11-20 06:39:25,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:39:25,579 INFO L225 Difference]: With dead ends: 3619 [2021-11-20 06:39:25,579 INFO L226 Difference]: Without dead ends: 2425 [2021-11-20 06:39:25,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:39:25,585 INFO L933 BasicCegarLoop]: 537 mSDtfsCounter, 232 mSDsluCounter, 2423 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 2960 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:39:25,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 2960 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-20 06:39:25,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2021-11-20 06:39:25,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2377. [2021-11-20 06:39:25,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2377 states, 1694 states have (on average 1.2851239669421488) internal successors, (2177), 1731 states have internal predecessors, (2177), 544 states have call successors, (544), 129 states have call predecessors, (544), 138 states have return successors, (592), 532 states have call predecessors, (592), 540 states have call successors, (592) [2021-11-20 06:39:25,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2377 states to 2377 states and 3313 transitions. [2021-11-20 06:39:25,745 INFO L78 Accepts]: Start accepts. Automaton has 2377 states and 3313 transitions. Word has length 69 [2021-11-20 06:39:25,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:39:25,746 INFO L470 AbstractCegarLoop]: Abstraction has 2377 states and 3313 transitions. [2021-11-20 06:39:25,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-20 06:39:25,746 INFO L276 IsEmpty]: Start isEmpty. Operand 2377 states and 3313 transitions. [2021-11-20 06:39:25,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-20 06:39:25,749 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:39:25,749 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:39:25,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 06:39:25,749 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:39:25,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:39:25,750 INFO L85 PathProgramCache]: Analyzing trace with hash 473889085, now seen corresponding path program 1 times [2021-11-20 06:39:25,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:39:25,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126534750] [2021-11-20 06:39:25,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:25,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:39:25,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:25,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:39:25,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:25,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 06:39:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:25,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-20 06:39:25,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:25,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:39:25,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:25,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-20 06:39:25,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:26,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-20 06:39:26,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:26,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-20 06:39:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:26,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:39:26,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:39:26,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126534750] [2021-11-20 06:39:26,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126534750] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:39:26,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:39:26,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-20 06:39:26,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110116998] [2021-11-20 06:39:26,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:39:26,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 06:39:26,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:39:26,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 06:39:26,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-11-20 06:39:26,032 INFO L87 Difference]: Start difference. First operand 2377 states and 3313 transitions. Second operand has 12 states, 12 states have (on average 4.5) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-20 06:39:27,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:39:27,776 INFO L93 Difference]: Finished difference Result 5577 states and 8015 transitions. [2021-11-20 06:39:27,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 06:39:27,777 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 69 [2021-11-20 06:39:27,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:39:27,805 INFO L225 Difference]: With dead ends: 5577 [2021-11-20 06:39:27,806 INFO L226 Difference]: Without dead ends: 3212 [2021-11-20 06:39:27,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-11-20 06:39:27,816 INFO L933 BasicCegarLoop]: 907 mSDtfsCounter, 450 mSDsluCounter, 6579 mSDsCounter, 0 mSdLazyCounter, 1233 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 7486 SdHoareTripleChecker+Invalid, 1424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:39:27,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [539 Valid, 7486 Invalid, 1424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 1233 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-20 06:39:27,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3212 states. [2021-11-20 06:39:28,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3212 to 2381. [2021-11-20 06:39:28,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2381 states, 1698 states have (on average 1.2820965842167256) internal successors, (2177), 1733 states have internal predecessors, (2177), 544 states have call successors, (544), 129 states have call predecessors, (544), 138 states have return successors, (592), 534 states have call predecessors, (592), 540 states have call successors, (592) [2021-11-20 06:39:28,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2381 states to 2381 states and 3313 transitions. [2021-11-20 06:39:28,040 INFO L78 Accepts]: Start accepts. Automaton has 2381 states and 3313 transitions. Word has length 69 [2021-11-20 06:39:28,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:39:28,041 INFO L470 AbstractCegarLoop]: Abstraction has 2381 states and 3313 transitions. [2021-11-20 06:39:28,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-20 06:39:28,041 INFO L276 IsEmpty]: Start isEmpty. Operand 2381 states and 3313 transitions. [2021-11-20 06:39:28,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-20 06:39:28,044 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:39:28,044 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:39:28,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 06:39:28,044 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:39:28,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:39:28,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1228623899, now seen corresponding path program 1 times [2021-11-20 06:39:28,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:39:28,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752769159] [2021-11-20 06:39:28,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:28,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:39:28,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:28,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:39:28,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:28,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 06:39:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:28,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-20 06:39:28,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:28,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:39:28,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:28,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-20 06:39:28,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:28,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-20 06:39:28,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:28,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:39:28,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:28,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-20 06:39:28,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:28,292 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 06:39:28,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:39:28,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752769159] [2021-11-20 06:39:28,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752769159] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:39:28,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:39:28,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 06:39:28,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001391279] [2021-11-20 06:39:28,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:39:28,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 06:39:28,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:39:28,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 06:39:28,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-20 06:39:28,295 INFO L87 Difference]: Start difference. First operand 2381 states and 3313 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-20 06:39:29,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:39:29,796 INFO L93 Difference]: Finished difference Result 5739 states and 8249 transitions. [2021-11-20 06:39:29,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 06:39:29,797 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 75 [2021-11-20 06:39:29,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:39:29,834 INFO L225 Difference]: With dead ends: 5739 [2021-11-20 06:39:29,834 INFO L226 Difference]: Without dead ends: 3370 [2021-11-20 06:39:29,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:39:29,842 INFO L933 BasicCegarLoop]: 814 mSDtfsCounter, 401 mSDsluCounter, 2759 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 3573 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:39:29,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [466 Valid, 3573 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-20 06:39:29,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3370 states. [2021-11-20 06:39:30,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3370 to 2179. [2021-11-20 06:39:30,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2179 states, 1560 states have (on average 1.2724358974358974) internal successors, (1985), 1579 states have internal predecessors, (1985), 480 states have call successors, (480), 127 states have call predecessors, (480), 138 states have return successors, (532), 480 states have call predecessors, (532), 476 states have call successors, (532) [2021-11-20 06:39:30,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2179 states to 2179 states and 2997 transitions. [2021-11-20 06:39:30,023 INFO L78 Accepts]: Start accepts. Automaton has 2179 states and 2997 transitions. Word has length 75 [2021-11-20 06:39:30,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:39:30,023 INFO L470 AbstractCegarLoop]: Abstraction has 2179 states and 2997 transitions. [2021-11-20 06:39:30,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-20 06:39:30,024 INFO L276 IsEmpty]: Start isEmpty. Operand 2179 states and 2997 transitions. [2021-11-20 06:39:30,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-20 06:39:30,029 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:39:30,029 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:39:30,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 06:39:30,030 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:39:30,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:39:30,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1163804262, now seen corresponding path program 1 times [2021-11-20 06:39:30,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:39:30,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262917934] [2021-11-20 06:39:30,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:30,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:39:30,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:30,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:39:30,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:30,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 06:39:30,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:30,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-20 06:39:30,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:30,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:39:30,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:30,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-20 06:39:30,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:30,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-20 06:39:30,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:30,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:39:30,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:30,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-20 06:39:30,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:30,282 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 06:39:30,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:39:30,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262917934] [2021-11-20 06:39:30,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262917934] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:39:30,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:39:30,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 06:39:30,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020470855] [2021-11-20 06:39:30,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:39:30,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 06:39:30,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:39:30,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 06:39:30,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:39:30,286 INFO L87 Difference]: Start difference. First operand 2179 states and 2997 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 6 states have internal predecessors, (53), 6 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) [2021-11-20 06:39:33,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:39:33,517 INFO L93 Difference]: Finished difference Result 3452 states and 4819 transitions. [2021-11-20 06:39:33,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 06:39:33,517 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 6 states have internal predecessors, (53), 6 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) Word has length 75 [2021-11-20 06:39:33,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:39:33,540 INFO L225 Difference]: With dead ends: 3452 [2021-11-20 06:39:33,540 INFO L226 Difference]: Without dead ends: 3447 [2021-11-20 06:39:33,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-11-20 06:39:33,543 INFO L933 BasicCegarLoop]: 919 mSDtfsCounter, 2050 mSDsluCounter, 1869 mSDsCounter, 0 mSdLazyCounter, 2058 mSolverCounterSat, 958 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2163 SdHoareTripleChecker+Valid, 2788 SdHoareTripleChecker+Invalid, 3016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 958 IncrementalHoareTripleChecker+Valid, 2058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-20 06:39:33,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2163 Valid, 2788 Invalid, 3016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [958 Valid, 2058 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-20 06:39:33,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3447 states. [2021-11-20 06:39:33,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3447 to 3363. [2021-11-20 06:39:33,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3363 states, 2405 states have (on average 1.2756756756756757) internal successors, (3068), 2440 states have internal predecessors, (3068), 748 states have call successors, (748), 189 states have call predecessors, (748), 209 states have return successors, (870), 749 states have call predecessors, (870), 744 states have call successors, (870) [2021-11-20 06:39:33,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3363 states to 3363 states and 4686 transitions. [2021-11-20 06:39:33,810 INFO L78 Accepts]: Start accepts. Automaton has 3363 states and 4686 transitions. Word has length 75 [2021-11-20 06:39:33,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:39:33,810 INFO L470 AbstractCegarLoop]: Abstraction has 3363 states and 4686 transitions. [2021-11-20 06:39:33,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 6 states have internal predecessors, (53), 6 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) [2021-11-20 06:39:33,811 INFO L276 IsEmpty]: Start isEmpty. Operand 3363 states and 4686 transitions. [2021-11-20 06:39:33,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-20 06:39:33,814 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:39:33,815 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:39:33,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 06:39:33,815 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:39:33,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:39:33,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1863612345, now seen corresponding path program 1 times [2021-11-20 06:39:33,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:39:33,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964868902] [2021-11-20 06:39:33,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:33,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:39:33,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:33,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:39:33,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:33,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 06:39:33,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:33,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 06:39:33,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:33,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:39:33,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:33,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:39:33,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:33,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 06:39:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:34,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:39:34,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:34,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-20 06:39:34,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:34,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-20 06:39:34,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:34,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:39:34,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:34,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-20 06:39:34,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:34,064 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 06:39:34,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:39:34,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964868902] [2021-11-20 06:39:34,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964868902] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:39:34,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:39:34,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 06:39:34,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938718131] [2021-11-20 06:39:34,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:39:34,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 06:39:34,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:39:34,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 06:39:34,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:39:34,067 INFO L87 Difference]: Start difference. First operand 3363 states and 4686 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-20 06:39:37,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:39:37,916 INFO L93 Difference]: Finished difference Result 7643 states and 10960 transitions. [2021-11-20 06:39:37,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 06:39:37,917 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 94 [2021-11-20 06:39:37,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:39:37,942 INFO L225 Difference]: With dead ends: 7643 [2021-11-20 06:39:37,942 INFO L226 Difference]: Without dead ends: 4292 [2021-11-20 06:39:37,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-11-20 06:39:37,955 INFO L933 BasicCegarLoop]: 801 mSDtfsCounter, 509 mSDsluCounter, 2627 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 3428 SdHoareTripleChecker+Invalid, 1156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:39:37,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [575 Valid, 3428 Invalid, 1156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-11-20 06:39:37,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4292 states. [2021-11-20 06:39:38,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4292 to 2826. [2021-11-20 06:39:38,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2826 states, 2031 states have (on average 1.27424913835549) internal successors, (2588), 2057 states have internal predecessors, (2588), 624 states have call successors, (624), 153 states have call predecessors, (624), 170 states have return successors, (730), 631 states have call predecessors, (730), 620 states have call successors, (730) [2021-11-20 06:39:38,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2826 states to 2826 states and 3942 transitions. [2021-11-20 06:39:38,222 INFO L78 Accepts]: Start accepts. Automaton has 2826 states and 3942 transitions. Word has length 94 [2021-11-20 06:39:38,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:39:38,223 INFO L470 AbstractCegarLoop]: Abstraction has 2826 states and 3942 transitions. [2021-11-20 06:39:38,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-20 06:39:38,224 INFO L276 IsEmpty]: Start isEmpty. Operand 2826 states and 3942 transitions. [2021-11-20 06:39:38,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-20 06:39:38,227 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:39:38,227 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:39:38,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 06:39:38,228 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:39:38,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:39:38,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1773942728, now seen corresponding path program 1 times [2021-11-20 06:39:38,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:39:38,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864171982] [2021-11-20 06:39:38,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:38,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:39:38,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:38,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:39:38,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:38,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 06:39:38,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:38,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 06:39:38,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:38,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:39:38,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:38,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:39:38,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:38,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 06:39:38,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:38,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:39:38,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:38,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-20 06:39:38,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:38,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-20 06:39:38,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:38,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 06:39:38,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:38,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-20 06:39:38,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:38,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:39:38,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:39:38,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864171982] [2021-11-20 06:39:38,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864171982] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:39:38,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:39:38,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-20 06:39:38,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256329978] [2021-11-20 06:39:38,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:39:38,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 06:39:38,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:39:38,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 06:39:38,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-11-20 06:39:38,540 INFO L87 Difference]: Start difference. First operand 2826 states and 3942 transitions. Second operand has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-20 06:39:40,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:39:40,441 INFO L93 Difference]: Finished difference Result 6776 states and 9772 transitions. [2021-11-20 06:39:40,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 06:39:40,446 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) Word has length 92 [2021-11-20 06:39:40,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:39:40,467 INFO L225 Difference]: With dead ends: 6776 [2021-11-20 06:39:40,467 INFO L226 Difference]: Without dead ends: 4370 [2021-11-20 06:39:40,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-11-20 06:39:40,477 INFO L933 BasicCegarLoop]: 804 mSDtfsCounter, 547 mSDsluCounter, 5751 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 6555 SdHoareTripleChecker+Invalid, 1628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-20 06:39:40,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [633 Valid, 6555 Invalid, 1628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-20 06:39:40,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4370 states. [2021-11-20 06:39:40,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4370 to 2826. [2021-11-20 06:39:40,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2826 states, 2031 states have (on average 1.2703101920236337) internal successors, (2580), 2057 states have internal predecessors, (2580), 624 states have call successors, (624), 153 states have call predecessors, (624), 170 states have return successors, (730), 631 states have call predecessors, (730), 620 states have call successors, (730) [2021-11-20 06:39:40,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2826 states to 2826 states and 3934 transitions. [2021-11-20 06:39:40,683 INFO L78 Accepts]: Start accepts. Automaton has 2826 states and 3934 transitions. Word has length 92 [2021-11-20 06:39:40,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:39:40,684 INFO L470 AbstractCegarLoop]: Abstraction has 2826 states and 3934 transitions. [2021-11-20 06:39:40,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-20 06:39:40,684 INFO L276 IsEmpty]: Start isEmpty. Operand 2826 states and 3934 transitions. [2021-11-20 06:39:40,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-20 06:39:40,688 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:39:40,688 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:39:40,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 06:39:40,689 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:39:40,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:39:40,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1851889034, now seen corresponding path program 1 times [2021-11-20 06:39:40,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:39:40,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844870642] [2021-11-20 06:39:40,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:40,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:39:40,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:40,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:39:40,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:40,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 06:39:40,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:40,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-20 06:39:40,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:40,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:39:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:40,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-20 06:39:40,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:40,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-20 06:39:40,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:40,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:39:40,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:40,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-20 06:39:40,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:40,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-20 06:39:40,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:40,913 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 06:39:40,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:39:40,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844870642] [2021-11-20 06:39:40,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844870642] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:39:40,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:39:40,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 06:39:40,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143296431] [2021-11-20 06:39:40,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:39:40,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 06:39:40,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:39:40,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 06:39:40,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-20 06:39:40,915 INFO L87 Difference]: Start difference. First operand 2826 states and 3934 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-20 06:39:42,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:39:42,309 INFO L93 Difference]: Finished difference Result 6262 states and 9008 transitions. [2021-11-20 06:39:42,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 06:39:42,310 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 87 [2021-11-20 06:39:42,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:39:42,328 INFO L225 Difference]: With dead ends: 6262 [2021-11-20 06:39:42,328 INFO L226 Difference]: Without dead ends: 3856 [2021-11-20 06:39:42,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:39:42,339 INFO L933 BasicCegarLoop]: 808 mSDtfsCounter, 399 mSDsluCounter, 3160 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 3968 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:39:42,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [468 Valid, 3968 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-20 06:39:42,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3856 states. [2021-11-20 06:39:42,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3856 to 2636. [2021-11-20 06:39:42,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2636 states, 1899 states have (on average 1.262769878883623) internal successors, (2398), 1911 states have internal predecessors, (2398), 568 states have call successors, (568), 151 states have call predecessors, (568), 168 states have return successors, (670), 585 states have call predecessors, (670), 564 states have call successors, (670) [2021-11-20 06:39:42,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2636 states to 2636 states and 3636 transitions. [2021-11-20 06:39:42,601 INFO L78 Accepts]: Start accepts. Automaton has 2636 states and 3636 transitions. Word has length 87 [2021-11-20 06:39:42,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:39:42,601 INFO L470 AbstractCegarLoop]: Abstraction has 2636 states and 3636 transitions. [2021-11-20 06:39:42,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-20 06:39:42,602 INFO L276 IsEmpty]: Start isEmpty. Operand 2636 states and 3636 transitions. [2021-11-20 06:39:42,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-20 06:39:42,605 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:39:42,605 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:39:42,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 06:39:42,605 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:39:42,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:39:42,605 INFO L85 PathProgramCache]: Analyzing trace with hash 365868919, now seen corresponding path program 1 times [2021-11-20 06:39:42,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:39:42,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047457901] [2021-11-20 06:39:42,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:42,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:39:42,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:42,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:39:42,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:42,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 06:39:42,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:42,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-20 06:39:42,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:42,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:39:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:42,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-20 06:39:42,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:42,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-20 06:39:42,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:42,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:39:42,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:42,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-20 06:39:42,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:42,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-20 06:39:42,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:42,901 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:39:42,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:39:42,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047457901] [2021-11-20 06:39:42,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047457901] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:39:42,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:39:42,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:39:42,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927205894] [2021-11-20 06:39:42,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:39:42,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:39:42,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:39:42,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:39:42,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:39:42,904 INFO L87 Difference]: Start difference. First operand 2636 states and 3636 transitions. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-20 06:39:44,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:39:44,016 INFO L93 Difference]: Finished difference Result 3905 states and 5434 transitions. [2021-11-20 06:39:44,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 06:39:44,017 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 87 [2021-11-20 06:39:44,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:39:44,027 INFO L225 Difference]: With dead ends: 3905 [2021-11-20 06:39:44,027 INFO L226 Difference]: Without dead ends: 2681 [2021-11-20 06:39:44,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-11-20 06:39:44,035 INFO L933 BasicCegarLoop]: 528 mSDtfsCounter, 343 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 2911 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 06:39:44,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 2911 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-20 06:39:44,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2021-11-20 06:39:44,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 2644. [2021-11-20 06:39:44,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2644 states, 1907 states have (on average 1.2616675406397484) internal successors, (2406), 1915 states have internal predecessors, (2406), 568 states have call successors, (568), 151 states have call predecessors, (568), 168 states have return successors, (670), 589 states have call predecessors, (670), 564 states have call successors, (670) [2021-11-20 06:39:44,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2644 states to 2644 states and 3644 transitions. [2021-11-20 06:39:44,265 INFO L78 Accepts]: Start accepts. Automaton has 2644 states and 3644 transitions. Word has length 87 [2021-11-20 06:39:44,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:39:44,266 INFO L470 AbstractCegarLoop]: Abstraction has 2644 states and 3644 transitions. [2021-11-20 06:39:44,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-20 06:39:44,266 INFO L276 IsEmpty]: Start isEmpty. Operand 2644 states and 3644 transitions. [2021-11-20 06:39:44,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-20 06:39:44,270 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:39:44,270 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:39:44,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-20 06:39:44,271 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:39:44,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:39:44,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1644234922, now seen corresponding path program 1 times [2021-11-20 06:39:44,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:39:44,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094926127] [2021-11-20 06:39:44,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:44,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:39:44,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:44,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:39:44,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:44,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 06:39:44,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:44,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-20 06:39:44,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:44,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:39:44,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:44,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-20 06:39:44,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:44,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-20 06:39:44,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:44,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:39:44,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:44,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-20 06:39:44,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:44,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-20 06:39:44,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:44,442 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 06:39:44,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:39:44,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094926127] [2021-11-20 06:39:44,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094926127] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:39:44,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:39:44,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 06:39:44,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161254086] [2021-11-20 06:39:44,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:39:44,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:39:44,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:39:44,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:39:44,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:39:44,445 INFO L87 Difference]: Start difference. First operand 2644 states and 3644 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-20 06:39:45,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:39:45,459 INFO L93 Difference]: Finished difference Result 4660 states and 6628 transitions. [2021-11-20 06:39:45,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:39:45,475 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 87 [2021-11-20 06:39:45,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:39:45,489 INFO L225 Difference]: With dead ends: 4660 [2021-11-20 06:39:45,489 INFO L226 Difference]: Without dead ends: 3432 [2021-11-20 06:39:45,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:39:45,495 INFO L933 BasicCegarLoop]: 830 mSDtfsCounter, 428 mSDsluCounter, 1349 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 2179 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 06:39:45,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [510 Valid, 2179 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 06:39:45,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3432 states. [2021-11-20 06:39:45,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3432 to 2652. [2021-11-20 06:39:45,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2652 states, 1915 states have (on average 1.260574412532637) internal successors, (2414), 1923 states have internal predecessors, (2414), 568 states have call successors, (568), 151 states have call predecessors, (568), 168 states have return successors, (670), 589 states have call predecessors, (670), 564 states have call successors, (670) [2021-11-20 06:39:45,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2652 states to 2652 states and 3652 transitions. [2021-11-20 06:39:45,707 INFO L78 Accepts]: Start accepts. Automaton has 2652 states and 3652 transitions. Word has length 87 [2021-11-20 06:39:45,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:39:45,707 INFO L470 AbstractCegarLoop]: Abstraction has 2652 states and 3652 transitions. [2021-11-20 06:39:45,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-20 06:39:45,708 INFO L276 IsEmpty]: Start isEmpty. Operand 2652 states and 3652 transitions. [2021-11-20 06:39:45,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-20 06:39:45,711 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:39:45,711 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:39:45,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-20 06:39:45,712 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:39:45,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:39:45,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1463528730, now seen corresponding path program 1 times [2021-11-20 06:39:45,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:39:45,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826369523] [2021-11-20 06:39:45,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:45,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:39:45,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:45,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:39:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:45,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-20 06:39:45,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:45,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-20 06:39:45,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:45,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-20 06:39:45,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:45,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-20 06:39:45,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:45,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-20 06:39:45,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:45,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-20 06:39:45,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:45,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:39:45,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:45,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:39:45,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:45,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-20 06:39:45,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:45,861 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-20 06:39:45,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:39:45,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826369523] [2021-11-20 06:39:45,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826369523] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:39:45,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:39:45,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 06:39:45,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835251818] [2021-11-20 06:39:45,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:39:45,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:39:45,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:39:45,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:39:45,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:39:45,864 INFO L87 Difference]: Start difference. First operand 2652 states and 3652 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 4 states have internal predecessors, (67), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-20 06:39:49,586 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:39:49,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:39:49,668 INFO L93 Difference]: Finished difference Result 5424 states and 7474 transitions. [2021-11-20 06:39:49,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 06:39:49,670 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 4 states have internal predecessors, (67), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 94 [2021-11-20 06:39:49,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:39:49,699 INFO L225 Difference]: With dead ends: 5424 [2021-11-20 06:39:49,704 INFO L226 Difference]: Without dead ends: 2778 [2021-11-20 06:39:49,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:39:49,722 INFO L933 BasicCegarLoop]: 534 mSDtfsCounter, 249 mSDsluCounter, 1269 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 213 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 1803 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-20 06:39:49,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 1803 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 584 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2021-11-20 06:39:49,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2778 states. [2021-11-20 06:39:49,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2778 to 2664. [2021-11-20 06:39:49,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2664 states, 1923 states have (on average 1.2589703588143526) internal successors, (2421), 1931 states have internal predecessors, (2421), 570 states have call successors, (570), 153 states have call predecessors, (570), 170 states have return successors, (672), 591 states have call predecessors, (672), 566 states have call successors, (672) [2021-11-20 06:39:49,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2664 states to 2664 states and 3663 transitions. [2021-11-20 06:39:49,965 INFO L78 Accepts]: Start accepts. Automaton has 2664 states and 3663 transitions. Word has length 94 [2021-11-20 06:39:49,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:39:49,965 INFO L470 AbstractCegarLoop]: Abstraction has 2664 states and 3663 transitions. [2021-11-20 06:39:49,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 4 states have internal predecessors, (67), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-20 06:39:49,966 INFO L276 IsEmpty]: Start isEmpty. Operand 2664 states and 3663 transitions. [2021-11-20 06:39:49,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-20 06:39:49,968 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:39:49,968 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:39:49,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-20 06:39:49,969 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:39:49,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:39:49,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1902113161, now seen corresponding path program 1 times [2021-11-20 06:39:49,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:39:49,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214328756] [2021-11-20 06:39:49,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:49,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:39:50,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:50,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:39:50,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:50,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 06:39:50,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:50,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-20 06:39:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:50,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:39:50,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:50,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-20 06:39:50,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:50,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-20 06:39:50,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:50,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:39:50,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:50,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-20 06:39:50,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:50,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-20 06:39:50,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:50,176 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 06:39:50,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:39:50,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214328756] [2021-11-20 06:39:50,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214328756] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:39:50,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:39:50,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 06:39:50,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062261093] [2021-11-20 06:39:50,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:39:50,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 06:39:50,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:39:50,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 06:39:50,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:39:50,178 INFO L87 Difference]: Start difference. First operand 2664 states and 3663 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 6 states have internal predecessors, (64), 6 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-20 06:39:53,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:39:53,119 INFO L93 Difference]: Finished difference Result 3982 states and 5508 transitions. [2021-11-20 06:39:53,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 06:39:53,119 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 6 states have internal predecessors, (64), 6 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Word has length 89 [2021-11-20 06:39:53,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:39:53,134 INFO L225 Difference]: With dead ends: 3982 [2021-11-20 06:39:53,134 INFO L226 Difference]: Without dead ends: 3979 [2021-11-20 06:39:53,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-11-20 06:39:53,137 INFO L933 BasicCegarLoop]: 1008 mSDtfsCounter, 1566 mSDsluCounter, 2237 mSDsCounter, 0 mSdLazyCounter, 2064 mSolverCounterSat, 585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1694 SdHoareTripleChecker+Valid, 3245 SdHoareTripleChecker+Invalid, 2649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 585 IncrementalHoareTripleChecker+Valid, 2064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-20 06:39:53,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1694 Valid, 3245 Invalid, 2649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [585 Valid, 2064 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-20 06:39:53,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3979 states. [2021-11-20 06:39:53,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3979 to 3879. [2021-11-20 06:39:53,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3879 states, 2797 states have (on average 1.2613514479799786) internal successors, (3528), 2814 states have internal predecessors, (3528), 838 states have call successors, (838), 215 states have call predecessors, (838), 243 states have return successors, (1014), 869 states have call predecessors, (1014), 834 states have call successors, (1014) [2021-11-20 06:39:53,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3879 states to 3879 states and 5380 transitions. [2021-11-20 06:39:53,406 INFO L78 Accepts]: Start accepts. Automaton has 3879 states and 5380 transitions. Word has length 89 [2021-11-20 06:39:53,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:39:53,407 INFO L470 AbstractCegarLoop]: Abstraction has 3879 states and 5380 transitions. [2021-11-20 06:39:53,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 6 states have internal predecessors, (64), 6 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-20 06:39:53,407 INFO L276 IsEmpty]: Start isEmpty. Operand 3879 states and 5380 transitions. [2021-11-20 06:39:53,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-20 06:39:53,410 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:39:53,411 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:39:53,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-20 06:39:53,411 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:39:53,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:39:53,412 INFO L85 PathProgramCache]: Analyzing trace with hash -105366267, now seen corresponding path program 1 times [2021-11-20 06:39:53,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:39:53,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189272487] [2021-11-20 06:39:53,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:53,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:39:53,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:53,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:39:53,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:53,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 06:39:53,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:53,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-20 06:39:53,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:53,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:39:53,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:53,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-20 06:39:53,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:53,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-20 06:39:53,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:53,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:39:53,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:53,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-20 06:39:53,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:53,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-20 06:39:53,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:53,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-20 06:39:53,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:53,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-20 06:39:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:53,821 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:39:53,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:39:53,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189272487] [2021-11-20 06:39:53,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189272487] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:39:53,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101279797] [2021-11-20 06:39:53,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:53,822 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:39:53,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:39:53,824 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:39:53,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 06:39:54,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:54,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-20 06:39:54,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:39:54,453 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-20 06:39:54,453 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:39:54,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101279797] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:39:54,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:39:54,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 18 [2021-11-20 06:39:54,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510273876] [2021-11-20 06:39:54,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:39:54,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:39:54,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:39:54,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:39:54,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2021-11-20 06:39:54,456 INFO L87 Difference]: Start difference. First operand 3879 states and 5380 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-20 06:39:54,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:39:54,744 INFO L93 Difference]: Finished difference Result 7750 states and 10751 transitions. [2021-11-20 06:39:54,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:39:54,745 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 94 [2021-11-20 06:39:54,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:39:54,759 INFO L225 Difference]: With dead ends: 7750 [2021-11-20 06:39:54,759 INFO L226 Difference]: Without dead ends: 3879 [2021-11-20 06:39:54,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2021-11-20 06:39:54,774 INFO L933 BasicCegarLoop]: 546 mSDtfsCounter, 0 mSDsluCounter, 1633 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2179 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:39:54,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2179 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:39:54,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3879 states. [2021-11-20 06:39:55,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3879 to 3879. [2021-11-20 06:39:55,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3879 states, 2797 states have (on average 1.2609939220593493) internal successors, (3527), 2814 states have internal predecessors, (3527), 838 states have call successors, (838), 215 states have call predecessors, (838), 243 states have return successors, (1014), 869 states have call predecessors, (1014), 834 states have call successors, (1014) [2021-11-20 06:39:55,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3879 states to 3879 states and 5379 transitions. [2021-11-20 06:39:55,043 INFO L78 Accepts]: Start accepts. Automaton has 3879 states and 5379 transitions. Word has length 94 [2021-11-20 06:39:55,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:39:55,044 INFO L470 AbstractCegarLoop]: Abstraction has 3879 states and 5379 transitions. [2021-11-20 06:39:55,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-20 06:39:55,046 INFO L276 IsEmpty]: Start isEmpty. Operand 3879 states and 5379 transitions. [2021-11-20 06:39:55,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-20 06:39:55,049 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:39:55,049 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:39:55,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 06:39:55,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-20 06:39:55,263 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:39:55,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:39:55,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1748979270, now seen corresponding path program 1 times [2021-11-20 06:39:55,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:39:55,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698594421] [2021-11-20 06:39:55,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:55,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:39:55,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:55,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:39:55,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:55,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 06:39:55,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:55,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-20 06:39:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:55,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:39:55,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:55,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-20 06:39:55,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:55,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-20 06:39:55,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:55,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:39:55,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:55,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-20 06:39:55,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:55,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-20 06:39:55,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:55,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-20 06:39:55,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:55,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-20 06:39:55,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:55,665 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:39:55,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:39:55,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698594421] [2021-11-20 06:39:55,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698594421] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:39:55,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558145808] [2021-11-20 06:39:55,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:39:55,667 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:39:55,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:39:55,668 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:39:55,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 06:39:55,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:39:55,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 1058 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-20 06:39:55,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:39:56,402 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:39:56,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:39:56,772 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:39:56,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558145808] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:39:56,773 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:39:56,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 26 [2021-11-20 06:39:56,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142048926] [2021-11-20 06:39:56,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:39:56,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-20 06:39:56,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:39:56,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-20 06:39:56,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=596, Unknown=0, NotChecked=0, Total=650 [2021-11-20 06:39:56,775 INFO L87 Difference]: Start difference. First operand 3879 states and 5379 transitions. Second operand has 26 states, 26 states have (on average 3.769230769230769) internal successors, (98), 16 states have internal predecessors, (98), 5 states have call successors, (19), 6 states have call predecessors, (19), 9 states have return successors, (19), 10 states have call predecessors, (19), 5 states have call successors, (19) [2021-11-20 06:40:01,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:40:01,484 INFO L93 Difference]: Finished difference Result 11133 states and 16255 transitions. [2021-11-20 06:40:01,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-20 06:40:01,485 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.769230769230769) internal successors, (98), 16 states have internal predecessors, (98), 5 states have call successors, (19), 6 states have call predecessors, (19), 9 states have return successors, (19), 10 states have call predecessors, (19), 5 states have call successors, (19) Word has length 94 [2021-11-20 06:40:01,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:40:01,513 INFO L225 Difference]: With dead ends: 11133 [2021-11-20 06:40:01,513 INFO L226 Difference]: Without dead ends: 7266 [2021-11-20 06:40:01,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=177, Invalid=1715, Unknown=0, NotChecked=0, Total=1892 [2021-11-20 06:40:01,527 INFO L933 BasicCegarLoop]: 931 mSDtfsCounter, 898 mSDsluCounter, 16221 mSDsCounter, 0 mSdLazyCounter, 4017 mSolverCounterSat, 470 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 961 SdHoareTripleChecker+Valid, 17152 SdHoareTripleChecker+Invalid, 4487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 470 IncrementalHoareTripleChecker+Valid, 4017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-20 06:40:01,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [961 Valid, 17152 Invalid, 4487 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [470 Valid, 4017 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-20 06:40:01,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7266 states. [2021-11-20 06:40:01,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7266 to 3833. [2021-11-20 06:40:01,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3833 states, 2762 states have (on average 1.2617668356263576) internal successors, (3485), 2796 states have internal predecessors, (3485), 834 states have call successors, (834), 215 states have call predecessors, (834), 236 states have return successors, (952), 835 states have call predecessors, (952), 828 states have call successors, (952) [2021-11-20 06:40:01,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3833 states to 3833 states and 5271 transitions. [2021-11-20 06:40:01,910 INFO L78 Accepts]: Start accepts. Automaton has 3833 states and 5271 transitions. Word has length 94 [2021-11-20 06:40:01,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:40:01,910 INFO L470 AbstractCegarLoop]: Abstraction has 3833 states and 5271 transitions. [2021-11-20 06:40:01,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.769230769230769) internal successors, (98), 16 states have internal predecessors, (98), 5 states have call successors, (19), 6 states have call predecessors, (19), 9 states have return successors, (19), 10 states have call predecessors, (19), 5 states have call successors, (19) [2021-11-20 06:40:01,911 INFO L276 IsEmpty]: Start isEmpty. Operand 3833 states and 5271 transitions. [2021-11-20 06:40:01,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-20 06:40:01,914 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:40:01,914 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:40:01,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 06:40:02,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-20 06:40:02,139 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:40:02,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:40:02,139 INFO L85 PathProgramCache]: Analyzing trace with hash -448437055, now seen corresponding path program 1 times [2021-11-20 06:40:02,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:40:02,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507449419] [2021-11-20 06:40:02,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:40:02,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:40:02,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:02,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:40:02,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:02,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 06:40:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:02,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-20 06:40:02,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:02,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:40:02,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:02,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-20 06:40:02,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:02,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-20 06:40:02,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:02,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:40:02,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:02,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-20 06:40:02,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:02,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-20 06:40:02,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:02,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-20 06:40:02,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:02,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 06:40:02,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:02,490 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-20 06:40:02,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:40:02,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507449419] [2021-11-20 06:40:02,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507449419] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:40:02,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:40:02,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-20 06:40:02,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757373726] [2021-11-20 06:40:02,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:40:02,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 06:40:02,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:40:02,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 06:40:02,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-20 06:40:02,494 INFO L87 Difference]: Start difference. First operand 3833 states and 5271 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 9 states have internal predecessors, (67), 6 states have call successors, (11), 6 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2021-11-20 06:40:05,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:40:05,497 INFO L93 Difference]: Finished difference Result 10144 states and 13936 transitions. [2021-11-20 06:40:05,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 06:40:05,498 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 9 states have internal predecessors, (67), 6 states have call successors, (11), 6 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) Word has length 96 [2021-11-20 06:40:05,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:40:05,539 INFO L225 Difference]: With dead ends: 10144 [2021-11-20 06:40:05,539 INFO L226 Difference]: Without dead ends: 8384 [2021-11-20 06:40:05,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2021-11-20 06:40:05,548 INFO L933 BasicCegarLoop]: 907 mSDtfsCounter, 2238 mSDsluCounter, 2426 mSDsCounter, 0 mSdLazyCounter, 2332 mSolverCounterSat, 1129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2352 SdHoareTripleChecker+Valid, 3333 SdHoareTripleChecker+Invalid, 3461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1129 IncrementalHoareTripleChecker+Valid, 2332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:40:05,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2352 Valid, 3333 Invalid, 3461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1129 Valid, 2332 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-20 06:40:05,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8384 states. [2021-11-20 06:40:06,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8384 to 8132. [2021-11-20 06:40:06,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8132 states, 5885 states have (on average 1.2677994902293968) internal successors, (7461), 5936 states have internal predecessors, (7461), 1737 states have call successors, (1737), 461 states have call predecessors, (1737), 509 states have return successors, (1983), 1758 states have call predecessors, (1983), 1731 states have call successors, (1983) [2021-11-20 06:40:06,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8132 states to 8132 states and 11181 transitions. [2021-11-20 06:40:06,210 INFO L78 Accepts]: Start accepts. Automaton has 8132 states and 11181 transitions. Word has length 96 [2021-11-20 06:40:06,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:40:06,211 INFO L470 AbstractCegarLoop]: Abstraction has 8132 states and 11181 transitions. [2021-11-20 06:40:06,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 9 states have internal predecessors, (67), 6 states have call successors, (11), 6 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2021-11-20 06:40:06,211 INFO L276 IsEmpty]: Start isEmpty. Operand 8132 states and 11181 transitions. [2021-11-20 06:40:06,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-20 06:40:06,215 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:40:06,215 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:40:06,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-20 06:40:06,216 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:40:06,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:40:06,216 INFO L85 PathProgramCache]: Analyzing trace with hash 832679025, now seen corresponding path program 1 times [2021-11-20 06:40:06,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:40:06,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331473303] [2021-11-20 06:40:06,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:40:06,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:40:06,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:06,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:40:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:06,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 06:40:06,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:06,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-20 06:40:06,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:06,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:40:06,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:06,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-20 06:40:06,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:06,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-20 06:40:06,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:06,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:40:06,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:06,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-20 06:40:06,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:06,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-20 06:40:06,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:06,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-20 06:40:06,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:06,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 06:40:06,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:06,473 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:40:06,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:40:06,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331473303] [2021-11-20 06:40:06,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331473303] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:40:06,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:40:06,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:40:06,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304502366] [2021-11-20 06:40:06,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:40:06,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:40:06,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:40:06,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:40:06,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:40:06,477 INFO L87 Difference]: Start difference. First operand 8132 states and 11181 transitions. Second operand has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (11), 6 states have call predecessors, (11), 4 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-20 06:40:09,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:40:09,159 INFO L93 Difference]: Finished difference Result 17611 states and 24834 transitions. [2021-11-20 06:40:09,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 06:40:09,160 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (11), 6 states have call predecessors, (11), 4 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) Word has length 97 [2021-11-20 06:40:09,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:40:09,189 INFO L225 Difference]: With dead ends: 17611 [2021-11-20 06:40:09,189 INFO L226 Difference]: Without dead ends: 10847 [2021-11-20 06:40:09,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2021-11-20 06:40:09,204 INFO L933 BasicCegarLoop]: 811 mSDtfsCounter, 687 mSDsluCounter, 6023 mSDsCounter, 0 mSdLazyCounter, 1576 mSolverCounterSat, 400 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 6834 SdHoareTripleChecker+Invalid, 1976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 400 IncrementalHoareTripleChecker+Valid, 1576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:40:09,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [766 Valid, 6834 Invalid, 1976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [400 Valid, 1576 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-20 06:40:09,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10847 states. [2021-11-20 06:40:09,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10847 to 8126. [2021-11-20 06:40:09,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8126 states, 5879 states have (on average 1.2639904745705053) internal successors, (7431), 5933 states have internal predecessors, (7431), 1737 states have call successors, (1737), 461 states have call predecessors, (1737), 509 states have return successors, (1983), 1755 states have call predecessors, (1983), 1731 states have call successors, (1983) [2021-11-20 06:40:09,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8126 states to 8126 states and 11151 transitions. [2021-11-20 06:40:09,944 INFO L78 Accepts]: Start accepts. Automaton has 8126 states and 11151 transitions. Word has length 97 [2021-11-20 06:40:09,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:40:09,945 INFO L470 AbstractCegarLoop]: Abstraction has 8126 states and 11151 transitions. [2021-11-20 06:40:09,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (11), 6 states have call predecessors, (11), 4 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-20 06:40:09,945 INFO L276 IsEmpty]: Start isEmpty. Operand 8126 states and 11151 transitions. [2021-11-20 06:40:09,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-20 06:40:09,949 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:40:09,949 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:40:09,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-20 06:40:09,949 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:40:09,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:40:09,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1118058599, now seen corresponding path program 1 times [2021-11-20 06:40:09,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:40:09,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256668830] [2021-11-20 06:40:09,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:40:09,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:40:09,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:10,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:40:10,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:10,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-20 06:40:10,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:10,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-20 06:40:10,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:10,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-20 06:40:10,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:10,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-20 06:40:10,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:10,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-20 06:40:10,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:10,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-20 06:40:10,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:10,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:40:10,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:10,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-20 06:40:10,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:10,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-20 06:40:10,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:10,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-20 06:40:10,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:10,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-20 06:40:10,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:10,168 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 06:40:10,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:40:10,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256668830] [2021-11-20 06:40:10,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256668830] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:40:10,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873154986] [2021-11-20 06:40:10,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:40:10,169 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:40:10,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:40:10,170 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:40:10,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 06:40:10,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:10,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 1156 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 06:40:10,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:40:10,716 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-20 06:40:10,716 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:40:10,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873154986] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:40:10,717 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:40:10,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-11-20 06:40:10,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259554425] [2021-11-20 06:40:10,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:40:10,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:40:10,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:40:10,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:40:10,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:40:10,721 INFO L87 Difference]: Start difference. First operand 8126 states and 11151 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-20 06:40:11,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:40:11,352 INFO L93 Difference]: Finished difference Result 16288 states and 22354 transitions. [2021-11-20 06:40:11,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:40:11,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2021-11-20 06:40:11,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:40:11,370 INFO L225 Difference]: With dead ends: 16288 [2021-11-20 06:40:11,370 INFO L226 Difference]: Without dead ends: 8174 [2021-11-20 06:40:11,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:40:11,382 INFO L933 BasicCegarLoop]: 543 mSDtfsCounter, 1 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:40:11,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1083 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:40:11,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8174 states. [2021-11-20 06:40:11,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8174 to 8158. [2021-11-20 06:40:11,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8158 states, 5911 states have (on average 1.2625613263407207) internal successors, (7463), 5965 states have internal predecessors, (7463), 1737 states have call successors, (1737), 461 states have call predecessors, (1737), 509 states have return successors, (1983), 1755 states have call predecessors, (1983), 1731 states have call successors, (1983) [2021-11-20 06:40:11,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8158 states to 8158 states and 11183 transitions. [2021-11-20 06:40:11,977 INFO L78 Accepts]: Start accepts. Automaton has 8158 states and 11183 transitions. Word has length 108 [2021-11-20 06:40:11,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:40:11,977 INFO L470 AbstractCegarLoop]: Abstraction has 8158 states and 11183 transitions. [2021-11-20 06:40:11,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-20 06:40:11,978 INFO L276 IsEmpty]: Start isEmpty. Operand 8158 states and 11183 transitions. [2021-11-20 06:40:11,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-20 06:40:11,986 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:40:11,987 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:40:12,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 06:40:12,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-11-20 06:40:12,207 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:40:12,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:40:12,207 INFO L85 PathProgramCache]: Analyzing trace with hash 920282283, now seen corresponding path program 1 times [2021-11-20 06:40:12,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:40:12,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613007663] [2021-11-20 06:40:12,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:40:12,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:40:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:12,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:40:12,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:12,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 06:40:12,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:12,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 06:40:12,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:12,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:40:12,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:12,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:40:12,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:12,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 06:40:12,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:12,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:40:12,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:12,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-20 06:40:12,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:12,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-20 06:40:12,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:12,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:40:12,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:12,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-20 06:40:12,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:12,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-20 06:40:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:12,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-20 06:40:12,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:12,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 06:40:12,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:12,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-20 06:40:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:12,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-20 06:40:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:12,523 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-20 06:40:12,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:40:12,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613007663] [2021-11-20 06:40:12,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613007663] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:40:12,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:40:12,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:40:12,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755277363] [2021-11-20 06:40:12,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:40:12,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:40:12,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:40:12,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:40:12,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:40:12,527 INFO L87 Difference]: Start difference. First operand 8158 states and 11183 transitions. Second operand has 10 states, 10 states have (on average 8.0) internal successors, (80), 4 states have internal predecessors, (80), 3 states have call successors, (17), 7 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-20 06:40:18,328 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:40:19,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:40:19,033 INFO L93 Difference]: Finished difference Result 18980 states and 26789 transitions. [2021-11-20 06:40:19,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 06:40:19,034 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.0) internal successors, (80), 4 states have internal predecessors, (80), 3 states have call successors, (17), 7 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 120 [2021-11-20 06:40:19,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:40:19,059 INFO L225 Difference]: With dead ends: 18980 [2021-11-20 06:40:19,059 INFO L226 Difference]: Without dead ends: 12202 [2021-11-20 06:40:19,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-11-20 06:40:19,072 INFO L933 BasicCegarLoop]: 789 mSDtfsCounter, 505 mSDsluCounter, 3688 mSDsCounter, 0 mSdLazyCounter, 1476 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 4477 SdHoareTripleChecker+Invalid, 1797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 1476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-20 06:40:19,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [574 Valid, 4477 Invalid, 1797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 1476 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2021-11-20 06:40:19,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12202 states. [2021-11-20 06:40:19,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12202 to 7987. [2021-11-20 06:40:19,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7987 states, 5818 states have (on average 1.2619456858026814) internal successors, (7342), 5860 states have internal predecessors, (7342), 1675 states have call successors, (1675), 445 states have call predecessors, (1675), 493 states have return successors, (1921), 1705 states have call predecessors, (1921), 1669 states have call successors, (1921) [2021-11-20 06:40:19,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7987 states to 7987 states and 10938 transitions. [2021-11-20 06:40:19,769 INFO L78 Accepts]: Start accepts. Automaton has 7987 states and 10938 transitions. Word has length 120 [2021-11-20 06:40:19,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:40:19,769 INFO L470 AbstractCegarLoop]: Abstraction has 7987 states and 10938 transitions. [2021-11-20 06:40:19,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.0) internal successors, (80), 4 states have internal predecessors, (80), 3 states have call successors, (17), 7 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-20 06:40:19,769 INFO L276 IsEmpty]: Start isEmpty. Operand 7987 states and 10938 transitions. [2021-11-20 06:40:19,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-20 06:40:19,773 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:40:19,773 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:40:19,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-20 06:40:19,774 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:40:19,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:40:19,774 INFO L85 PathProgramCache]: Analyzing trace with hash -2053204873, now seen corresponding path program 1 times [2021-11-20 06:40:19,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:40:19,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917672865] [2021-11-20 06:40:19,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:40:19,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:40:19,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:19,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:40:19,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:19,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 06:40:19,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:19,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-20 06:40:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:19,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:40:19,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:19,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-20 06:40:19,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:19,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-20 06:40:19,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:19,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:40:19,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:20,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-20 06:40:20,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:20,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-20 06:40:20,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:20,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-20 06:40:20,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:20,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-20 06:40:20,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:20,132 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:40:20,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:40:20,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917672865] [2021-11-20 06:40:20,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917672865] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:40:20,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:40:20,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 06:40:20,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621877976] [2021-11-20 06:40:20,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:40:20,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 06:40:20,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:40:20,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 06:40:20,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-20 06:40:20,139 INFO L87 Difference]: Start difference. First operand 7987 states and 10938 transitions. Second operand has 15 states, 15 states have (on average 5.333333333333333) internal successors, (80), 8 states have internal predecessors, (80), 4 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (11), 6 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-20 06:40:22,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:40:22,997 INFO L93 Difference]: Finished difference Result 15028 states and 21199 transitions. [2021-11-20 06:40:22,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 06:40:22,997 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.333333333333333) internal successors, (80), 8 states have internal predecessors, (80), 4 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (11), 6 states have call predecessors, (11), 4 states have call successors, (11) Word has length 104 [2021-11-20 06:40:22,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:40:23,023 INFO L225 Difference]: With dead ends: 15028 [2021-11-20 06:40:23,023 INFO L226 Difference]: Without dead ends: 10127 [2021-11-20 06:40:23,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=739, Unknown=0, NotChecked=0, Total=870 [2021-11-20 06:40:23,037 INFO L933 BasicCegarLoop]: 798 mSDtfsCounter, 450 mSDsluCounter, 7456 mSDsCounter, 0 mSdLazyCounter, 1978 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 8254 SdHoareTripleChecker+Invalid, 2192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 1978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:40:23,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [527 Valid, 8254 Invalid, 2192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 1978 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-20 06:40:23,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10127 states. [2021-11-20 06:40:23,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10127 to 7133. [2021-11-20 06:40:23,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7133 states, 5203 states have (on average 1.2588891024408995) internal successors, (6550), 5251 states have internal predecessors, (6550), 1490 states have call successors, (1490), 403 states have call predecessors, (1490), 439 states have return successors, (1669), 1502 states have call predecessors, (1669), 1484 states have call successors, (1669) [2021-11-20 06:40:23,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7133 states to 7133 states and 9709 transitions. [2021-11-20 06:40:23,576 INFO L78 Accepts]: Start accepts. Automaton has 7133 states and 9709 transitions. Word has length 104 [2021-11-20 06:40:23,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:40:23,577 INFO L470 AbstractCegarLoop]: Abstraction has 7133 states and 9709 transitions. [2021-11-20 06:40:23,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.333333333333333) internal successors, (80), 8 states have internal predecessors, (80), 4 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (11), 6 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-20 06:40:23,578 INFO L276 IsEmpty]: Start isEmpty. Operand 7133 states and 9709 transitions. [2021-11-20 06:40:23,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-20 06:40:23,581 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:40:23,582 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:40:23,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-20 06:40:23,582 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:40:23,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:40:23,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1247847667, now seen corresponding path program 1 times [2021-11-20 06:40:23,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:40:23,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115955120] [2021-11-20 06:40:23,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:40:23,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:40:23,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:23,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:40:23,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:23,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-20 06:40:23,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:23,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-20 06:40:23,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:23,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-20 06:40:23,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:23,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-20 06:40:23,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:23,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-20 06:40:23,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:23,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-20 06:40:23,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:23,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:40:23,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:23,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-20 06:40:23,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:23,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-20 06:40:23,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:23,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-20 06:40:23,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:23,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-20 06:40:23,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:23,821 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-20 06:40:23,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:40:23,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115955120] [2021-11-20 06:40:23,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115955120] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:40:23,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596853279] [2021-11-20 06:40:23,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:40:23,824 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:40:23,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:40:23,826 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:40:23,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 06:40:24,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:24,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 1163 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 06:40:24,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:40:24,398 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-20 06:40:24,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:40:24,644 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-20 06:40:24,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596853279] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:40:24,645 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:40:24,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4, 4] total 13 [2021-11-20 06:40:24,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212115363] [2021-11-20 06:40:24,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:40:24,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 06:40:24,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:40:24,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 06:40:24,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-20 06:40:24,648 INFO L87 Difference]: Start difference. First operand 7133 states and 9709 transitions. Second operand has 13 states, 13 states have (on average 8.538461538461538) internal successors, (111), 9 states have internal predecessors, (111), 3 states have call successors, (27), 5 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-20 06:40:28,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:40:28,031 INFO L93 Difference]: Finished difference Result 14665 states and 19980 transitions. [2021-11-20 06:40:28,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 06:40:28,032 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.538461538461538) internal successors, (111), 9 states have internal predecessors, (111), 3 states have call successors, (27), 5 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 111 [2021-11-20 06:40:28,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:40:28,061 INFO L225 Difference]: With dead ends: 14665 [2021-11-20 06:40:28,061 INFO L226 Difference]: Without dead ends: 7538 [2021-11-20 06:40:28,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-11-20 06:40:28,079 INFO L933 BasicCegarLoop]: 531 mSDtfsCounter, 349 mSDsluCounter, 2551 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 323 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 3082 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 323 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-20 06:40:28,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 3082 Invalid, 1344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [323 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-20 06:40:28,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7538 states. [2021-11-20 06:40:28,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7538 to 7268. [2021-11-20 06:40:28,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7268 states, 5338 states have (on average 1.252341701011615) internal successors, (6685), 5383 states have internal predecessors, (6685), 1490 states have call successors, (1490), 403 states have call predecessors, (1490), 439 states have return successors, (1667), 1505 states have call predecessors, (1667), 1484 states have call successors, (1667) [2021-11-20 06:40:28,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7268 states to 7268 states and 9842 transitions. [2021-11-20 06:40:28,540 INFO L78 Accepts]: Start accepts. Automaton has 7268 states and 9842 transitions. Word has length 111 [2021-11-20 06:40:28,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:40:28,541 INFO L470 AbstractCegarLoop]: Abstraction has 7268 states and 9842 transitions. [2021-11-20 06:40:28,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.538461538461538) internal successors, (111), 9 states have internal predecessors, (111), 3 states have call successors, (27), 5 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-20 06:40:28,541 INFO L276 IsEmpty]: Start isEmpty. Operand 7268 states and 9842 transitions. [2021-11-20 06:40:28,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-20 06:40:28,544 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:40:28,544 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:40:28,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 06:40:28,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:40:28,754 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:40:28,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:40:28,754 INFO L85 PathProgramCache]: Analyzing trace with hash 800394672, now seen corresponding path program 1 times [2021-11-20 06:40:28,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:40:28,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011677285] [2021-11-20 06:40:28,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:40:28,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:40:28,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:28,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:40:28,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:28,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 06:40:28,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:28,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 06:40:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:28,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:40:28,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:28,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 06:40:28,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:28,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 06:40:28,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:28,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:40:28,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:28,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-20 06:40:28,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:28,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-20 06:40:28,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:28,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:40:28,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:28,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-20 06:40:29,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:29,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-20 06:40:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:29,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-20 06:40:29,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:29,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-11-20 06:40:29,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:29,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-20 06:40:29,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:29,069 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:40:29,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:40:29,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011677285] [2021-11-20 06:40:29,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011677285] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:40:29,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:40:29,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 06:40:29,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123549549] [2021-11-20 06:40:29,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:40:29,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 06:40:29,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:40:29,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 06:40:29,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-11-20 06:40:29,072 INFO L87 Difference]: Start difference. First operand 7268 states and 9842 transitions. Second operand has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (15), 7 states have call predecessors, (15), 4 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-20 06:40:31,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:40:31,931 INFO L93 Difference]: Finished difference Result 13334 states and 18523 transitions. [2021-11-20 06:40:31,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 06:40:31,932 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (15), 7 states have call predecessors, (15), 4 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) Word has length 121 [2021-11-20 06:40:31,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:40:31,956 INFO L225 Difference]: With dead ends: 13334 [2021-11-20 06:40:31,956 INFO L226 Difference]: Without dead ends: 10002 [2021-11-20 06:40:31,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2021-11-20 06:40:31,964 INFO L933 BasicCegarLoop]: 768 mSDtfsCounter, 549 mSDsluCounter, 6511 mSDsCounter, 0 mSdLazyCounter, 1963 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 7279 SdHoareTripleChecker+Invalid, 2342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 1963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:40:31,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [626 Valid, 7279 Invalid, 2342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [379 Valid, 1963 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-20 06:40:31,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10002 states. [2021-11-20 06:40:32,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10002 to 7266. [2021-11-20 06:40:32,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7266 states, 5338 states have (on average 1.2497189958786061) internal successors, (6671), 5381 states have internal predecessors, (6671), 1488 states have call successors, (1488), 403 states have call predecessors, (1488), 439 states have return successors, (1665), 1505 states have call predecessors, (1665), 1482 states have call successors, (1665) [2021-11-20 06:40:32,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7266 states to 7266 states and 9824 transitions. [2021-11-20 06:40:32,529 INFO L78 Accepts]: Start accepts. Automaton has 7266 states and 9824 transitions. Word has length 121 [2021-11-20 06:40:32,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:40:32,529 INFO L470 AbstractCegarLoop]: Abstraction has 7266 states and 9824 transitions. [2021-11-20 06:40:32,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (15), 7 states have call predecessors, (15), 4 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-20 06:40:32,529 INFO L276 IsEmpty]: Start isEmpty. Operand 7266 states and 9824 transitions. [2021-11-20 06:40:32,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-20 06:40:32,532 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:40:32,533 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:40:32,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-20 06:40:32,533 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:40:32,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:40:32,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1117139730, now seen corresponding path program 1 times [2021-11-20 06:40:32,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:40:32,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713045473] [2021-11-20 06:40:32,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:40:32,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:40:32,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:40:32,657 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:40:32,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:40:32,834 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:40:32,835 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 06:40:32,836 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 06:40:32,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-20 06:40:32,841 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:40:32,844 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 06:40:33,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 06:40:33 BoogieIcfgContainer [2021-11-20 06:40:33,017 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 06:40:33,018 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 06:40:33,018 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 06:40:33,018 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 06:40:33,019 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:39:12" (3/4) ... [2021-11-20 06:40:33,022 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 06:40:33,022 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 06:40:33,022 INFO L158 Benchmark]: Toolchain (without parser) took 85818.02ms. Allocated memory was 117.4MB in the beginning and 1.1GB in the end (delta: 933.2MB). Free memory was 75.9MB in the beginning and 676.6MB in the end (delta: -600.7MB). Peak memory consumption was 333.0MB. Max. memory is 16.1GB. [2021-11-20 06:40:33,023 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 81.8MB. Free memory was 38.9MB in the beginning and 38.9MB in the end (delta: 44.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:40:33,024 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2010.34ms. Allocated memory was 117.4MB in the beginning and 144.7MB in the end (delta: 27.3MB). Free memory was 75.9MB in the beginning and 91.2MB in the end (delta: -15.3MB). Peak memory consumption was 52.8MB. Max. memory is 16.1GB. [2021-11-20 06:40:33,024 INFO L158 Benchmark]: Boogie Procedure Inliner took 163.97ms. Allocated memory is still 144.7MB. Free memory was 91.2MB in the beginning and 81.9MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 06:40:33,025 INFO L158 Benchmark]: Boogie Preprocessor took 139.59ms. Allocated memory is still 144.7MB. Free memory was 81.9MB in the beginning and 72.2MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 06:40:33,028 INFO L158 Benchmark]: RCFGBuilder took 3442.47ms. Allocated memory was 144.7MB in the beginning and 218.1MB in the end (delta: 73.4MB). Free memory was 72.2MB in the beginning and 111.0MB in the end (delta: -38.7MB). Peak memory consumption was 38.1MB. Max. memory is 16.1GB. [2021-11-20 06:40:33,028 INFO L158 Benchmark]: TraceAbstraction took 80050.25ms. Allocated memory was 218.1MB in the beginning and 1.1GB in the end (delta: 832.6MB). Free memory was 109.9MB in the beginning and 676.6MB in the end (delta: -566.7MB). Peak memory consumption was 265.8MB. Max. memory is 16.1GB. [2021-11-20 06:40:33,029 INFO L158 Benchmark]: Witness Printer took 4.15ms. Allocated memory is still 1.1GB. Free memory is still 676.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:40:33,030 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 81.8MB. Free memory was 38.9MB in the beginning and 38.9MB in the end (delta: 44.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2010.34ms. Allocated memory was 117.4MB in the beginning and 144.7MB in the end (delta: 27.3MB). Free memory was 75.9MB in the beginning and 91.2MB in the end (delta: -15.3MB). Peak memory consumption was 52.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 163.97ms. Allocated memory is still 144.7MB. Free memory was 91.2MB in the beginning and 81.9MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 139.59ms. Allocated memory is still 144.7MB. Free memory was 81.9MB in the beginning and 72.2MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * RCFGBuilder took 3442.47ms. Allocated memory was 144.7MB in the beginning and 218.1MB in the end (delta: 73.4MB). Free memory was 72.2MB in the beginning and 111.0MB in the end (delta: -38.7MB). Peak memory consumption was 38.1MB. Max. memory is 16.1GB. * TraceAbstraction took 80050.25ms. Allocated memory was 218.1MB in the beginning and 1.1GB in the end (delta: 832.6MB). Free memory was 109.9MB in the beginning and 676.6MB in the end (delta: -566.7MB). Peak memory consumption was 265.8MB. Max. memory is 16.1GB. * Witness Printer took 4.15ms. Allocated memory is still 1.1GB. Free memory is still 676.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 6754]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of large string literal at line 5143, overapproximation of bitwiseAnd at line 6104. Possible FailurePath: [L5149] static struct lock_class_key __key___7 ; [L5150] static struct lock_class_key __key___8 ; [L5290-L5303] static char const __mod_author31[46] __attribute__((__used__, __unused__, __section__(".modinfo"), __aligned__(1))) = { (char const )'a', (char const )'u', (char const )'t', (char const )'h', (char const )'o', (char const )'r', (char const )'=', (char const )'S', (char const )'e', (char const )'b', (char const )'a', (char const )'s', (char const )'t', (char const )'i', (char const )'a', (char const )'n', (char const )' ', (char const )'H', (char const )'a', (char const )'a', (char const )'s', (char const )' ', (char const )'<', (char const )'h', (char const )'a', (char const )'a', (char const )'s', (char const )'@', (char const )'e', (char const )'m', (char const )'s', (char const )'-', (char const )'w', (char const )'u', (char const )'e', (char const )'n', (char const )'s', (char const )'c', (char const )'h', (char const )'e', (char const )'.', (char const )'c', (char const )'o', (char const )'m', (char const )'>', (char const )'\000'}; [L5304-L5323] static char const __mod_description32[70] __attribute__((__used__, __unused__, __section__(".modinfo"), __aligned__(1))) = { (char const )'d', (char const )'e', (char const )'s', (char const )'c', (char const )'r', (char const )'i', (char const )'p', (char const )'t', (char const )'i', (char const )'o', (char const )'n', (char const )'=', (char const )'C', (char const )'A', (char const )'N', (char const )' ', (char const )'d', (char const )'r', (char const )'i', (char const )'v', (char const )'e', (char const )'r', (char const )' ', (char const )'f', (char const )'o', (char const )'r', (char const )' ', (char const )'E', (char const )'M', (char const )'S', (char const )' ', (char const )'D', (char const )'r', (char const )'.', (char const )' ', (char const )'T', (char const )'h', (char const )'o', (char const )'m', (char const )'a', (char const )'s', (char const )' ', (char const )'W', (char const )'u', (char const )'e', (char const )'n', (char const )'s', (char const )'c', (char const )'h', (char const )'e', (char const )' ', (char const )'C', (char const )'A', (char const )'N', (char const )'/', (char const )'U', (char const )'S', (char const )'B', (char const )' ', (char const )'i', (char const )'n', (char const )'t', (char const )'e', (char const )'r', (char const )'f', (char const )'a', (char const )'c', (char const )'e', (char const )'s', (char const )'\000'}; [L5324-L5329] static char const __mod_license33[15] __attribute__((__used__, __unused__, __section__(".modinfo"), __aligned__(1))) = { (char const )'l', (char const )'i', (char const )'c', (char const )'e', (char const )'n', (char const )'s', (char const )'e', (char const )'=', (char const )'G', (char const )'P', (char const )'L', (char const )' ', (char const )'v', (char const )'2', (char const )'\000'}; [L5330-L5332] static struct usb_device_id ems_usb_table[1] = { {(__u16 )3, (__u16 )4822, (__u16 )1092, (unsigned short)0, (unsigned short)0, (unsigned char)0, (unsigned char)0, (unsigned char)0, (unsigned char)0, (unsigned char)0, (unsigned char)0, 0UL}}; [L6247-L6287] static struct net_device_ops const ems_usb_netdev_ops = {(int (*)(struct net_device *dev ))0, (void (*)(struct net_device *dev ))0, & ems_usb_open, & ems_usb_close, & ems_usb_start_xmit, (u16 (*)(struct net_device *dev , struct sk_buff *skb ))0, (void (*)(struct net_device *dev , int flags ))0, (void (*)(struct net_device *dev ))0, (void (*)(struct net_device *dev ))0, (int (*)(struct net_device *dev , void *addr ))0, (int (*)(struct net_device *dev ))0, (int (*)(struct net_device *dev , struct ifreq *ifr , int cmd ))0, (int (*)(struct net_device *dev , struct ifmap *map ))0, (int (*)(struct net_device *dev , int new_mtu ))0, (int (*)(struct net_device *dev , struct neigh_parms * ))0, (void (*)(struct net_device *dev ))0, (struct rtnl_link_stats64 *(*)(struct net_device *dev , struct rtnl_link_stats64 *storage ))0, (struct net_device_stats *(*)(struct net_device *dev ))0, (void (*)(struct net_device *dev , struct vlan_group *grp ))0, (void (*)(struct net_device *dev , unsigned short vid ))0, (void (*)(struct net_device *dev , unsigned short vid ))0, (void (*)(struct net_device *dev ))0, (int (*)(struct net_device *dev , struct netpoll_info *info ))0, (void (*)(struct net_device *dev ))0, (int (*)(struct net_device *dev , int queue , u8 *mac ))0, (int (*)(struct net_device *dev , int queue , u16 vlan , u8 qos ))0, (int (*)(struct net_device *dev , int vf , int rate ))0, (int (*)(struct net_device *dev , int vf , struct ifla_vf_info *ivf ))0, (int (*)(struct net_device *dev , int vf , struct nlattr **port ))0, (int (*)(struct net_device *dev , int vf , struct sk_buff *skb ))0, (int (*)(struct net_device *dev , u8 tc ))0, (int (*)(struct net_device *dev ))0, (int (*)(struct net_device *dev ))0, (int (*)(struct net_device *dev , u16 xid , struct scatterlist *sgl , unsigned int sgc ))0, (int (*)(struct net_device *dev , u16 xid ))0, (int (*)(struct net_device *dev , u16 xid , struct scatterlist *sgl , unsigned int sgc ))0, (int (*)(struct net_device *dev , u64 *wwn , int type ))0, (int (*)(struct net_device *dev , struct sk_buff const *skb , u16 rxq_index , u32 flow_id ))0, (int (*)(struct net_device *dev , struct net_device *slave_dev ))0, (int (*)(struct net_device *dev , struct net_device *slave_dev ))0, (u32 (*)(struct net_device *dev , u32 features ))0, (int (*)(struct net_device *dev , u32 features ))0}; [L6288-L6292] static struct can_bittiming_const ems_usb_bittiming_const = {{(char )'e', (char )'m', (char )'s', (char )'_', (char )'u', (char )'s', (char )'b', (char )'\000', (char)0, (char)0, (char)0, (char)0, (char)0, (char)0, (char)0, (char)0}, (__u32 )1, (__u32 )16, (__u32 )1, (__u32 )8, (__u32 )4, (__u32 )1, (__u32 )64, (__u32 )1}; [L6543-L6561] static struct usb_driver ems_usb_driver = {"ems_usb", & ems_usb_probe, & ems_usb_disconnect, (int (*)(struct usb_interface *intf , unsigned int code , void *buf ))0, (int (*)(struct usb_interface *intf , pm_message_t message ))0, (int (*)(struct usb_interface *intf ))0, (int (*)(struct usb_interface *intf ))0, (int (*)(struct usb_interface *intf ))0, (int (*)(struct usb_interface *intf ))0, (struct usb_device_id const *)(ems_usb_table), {{{{{0U}, 0U, 0U, (void *)0, {(struct lock_class_key *)0, {(struct lock_class *)0, (struct lock_class *)0}, (char const *)0, 0, 0UL}}}}, {(struct list_head *)0, (struct list_head *)0}}, {{(char const *)0, (struct bus_type *)0, (struct module *)0, (char const *)0, (_Bool)0, (struct of_device_id const *)0, (int (*)(struct device *dev ))0, (int (*)(struct device *dev ))0, (void (*)(struct device *dev ))0, (int (*)(struct device *dev , pm_message_t state ))0, (int (*)(struct device *dev ))0, (struct attribute_group const **)0, (struct dev_pm_ops const *)0, (struct driver_private *)0}, 0}, 0U, 0U, 0U}; [L6614] int LDV_IN_INTERRUPT ; [L6615] static int res_ems_usb_open_10 ; [L6616] static int res_ems_usb_close_12 ; [L6617] static int res_ems_usb_probe_16 ; [L6767] int ldv_urb_state = 0; [L6768] int ldv_coherent_state = 0; VAL [__key___7={36:0}, __key___8={37:0}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=0, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6619] struct net_device *var_group1 ; [L6620] struct sk_buff *var_group2 ; [L6621] struct usb_interface *var_group3 ; [L6622] struct usb_device_id const *var_ems_usb_probe_16_p1 ; [L6623] int tmp___7 ; [L6624] int ldv_s_ems_usb_netdev_ops_net_device_ops ; [L6625] int ldv_s_ems_usb_driver_usb_driver ; [L6626] int tmp___8 ; [L6627] int tmp___9 ; [L6630] LDV_IN_INTERRUPT = 1 [L6631] FCALL ldv_initialize() [L6632] CALL, EXPR ems_usb_init() VAL [__key___7={36:0}, __key___8={37:0}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6565] int err ; [L6569] CALL, EXPR usb_register(& ems_usb_driver) [L5140] int tmp___7 ; [L5143] CALL, EXPR usb_register_driver(driver, & __this_module, "ems_usb") [L7025] return __VERIFIER_nondet_int(); [L5143] RET, EXPR usb_register_driver(driver, & __this_module, "ems_usb") [L5143] tmp___7 = usb_register_driver(driver, & __this_module, "ems_usb") [L5145] return (tmp___7); VAL [\result=0, __key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, driver={41:0}, driver={41:0}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7=0] [L6569] RET, EXPR usb_register(& ems_usb_driver) [L6569] err = usb_register(& ems_usb_driver) [L6571] COND FALSE !(\read(err)) [L6578] return (0); VAL [\result=0, __key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, err=0, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6632] RET, EXPR ems_usb_init() VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_init()=0, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6632] tmp___7 = ems_usb_init() [L6634] COND FALSE !(\read(tmp___7)) [L6638] ldv_s_ems_usb_netdev_ops_net_device_ops = 0 [L6639] ldv_s_ems_usb_driver_usb_driver = 0 VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_s_ems_usb_driver_usb_driver=0, ldv_s_ems_usb_netdev_ops_net_device_ops=0, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7=0] [L6641] COND TRUE 1 VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_s_ems_usb_driver_usb_driver=0, ldv_s_ems_usb_netdev_ops_net_device_ops=0, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7=0] [L6644] tmp___9 = __VERIFIER_nondet_int() [L6646] COND TRUE \read(tmp___9) VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_s_ems_usb_driver_usb_driver=0, ldv_s_ems_usb_netdev_ops_net_device_ops=0, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7=0, tmp___9=1] [L6655] tmp___8 = __VERIFIER_nondet_int() [L6657] COND FALSE !(tmp___8 == 0) VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_s_ems_usb_driver_usb_driver=0, ldv_s_ems_usb_netdev_ops_net_device_ops=0, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7=0, tmp___8=2, tmp___9=1] [L6660] COND FALSE !(tmp___8 == 1) VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_s_ems_usb_driver_usb_driver=0, ldv_s_ems_usb_netdev_ops_net_device_ops=0, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7=0, tmp___8=2, tmp___9=1] [L6663] COND TRUE tmp___8 == 2 VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_s_ems_usb_driver_usb_driver=0, ldv_s_ems_usb_netdev_ops_net_device_ops=0, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7=0, tmp___8=2, tmp___9=1] [L6704] CALL ems_usb_start_xmit(var_group2, var_group1) [L6048] struct ems_usb *dev ; [L6049] void *tmp___7 ; [L6050] struct ems_tx_urb_context *context ; [L6051] struct net_device_stats *stats ; [L6052] struct can_frame *cf ; [L6053] struct ems_cpc_msg *msg ; [L6054] struct urb *urb ; [L6055] u8 *buf ; [L6056] int i ; [L6057] int err ; [L6058] size_t size ; [L6059] int tmp___8 ; [L6060] void *tmp___9 ; [L6061] unsigned int tmp___10 ; [L6062] int tmp___11 ; [L6063] long tmp___12 ; VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, netdev={0:-519}, netdev={0:-519}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, skb={18446744073709551625:0}, skb={18446744073709551625:0}] [L6066] CALL, EXPR netdev_priv((struct net_device const *)netdev) VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, dev={0:-519}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L4976] return ((void *)((char *)dev + ((sizeof(struct net_device ) + 31UL) & 0x0fffffffffffffe0UL))); VAL [\result={0:-520}, __key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, dev={0:-519}, dev={0:-519}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6066] RET, EXPR netdev_priv((struct net_device const *)netdev) VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, netdev={0:-519}, netdev={0:-519}, netdev_priv((struct net_device const *)netdev)={0:-520}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, skb={18446744073709551625:0}, skb={18446744073709551625:0}] [L6066] tmp___7 = netdev_priv((struct net_device const *)netdev) [L6067] dev = (struct ems_usb *)tmp___7 [L6068] context = (struct ems_tx_urb_context *)((void *)0) [L6069] stats = & netdev->stats [L6070] EXPR skb->data [L6070] cf = (struct can_frame *)skb->data [L6071] size = 15UL + sizeof(struct cpc_can_msg ) [L6072] CALL, EXPR can_dropped_invalid_skb(netdev, skb) [L5252] struct can_frame const *cf ; [L5253] int tmp___7 ; [L5254] long tmp___8 ; [L5256] EXPR skb->data [L5256] cf = (struct can_frame const *)((struct can_frame *)skb->data) [L5257] EXPR skb->len VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, cf={18446744073709551620:-8}, dev={0:-519}, dev={0:-519}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, skb={18446744073709551625:0}, skb={18446744073709551625:0}, skb->len=4294967309] [L5257] COND FALSE !((unsigned long )skb->len != sizeof(*cf)) [L5260] EXPR cf->can_dlc VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, cf={18446744073709551620:-8}, cf->can_dlc=0, dev={0:-519}, dev={0:-519}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, skb={18446744073709551625:0}, skb={18446744073709551625:0}] [L5260] COND FALSE !((int const )cf->can_dlc > 8) [L5263] tmp___7 = 0 VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, cf={18446744073709551620:-8}, dev={0:-519}, dev={0:-519}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, skb={18446744073709551625:0}, skb={18446744073709551625:0}, tmp___7=0] [L5266] tmp___8 = __builtin_expect((long )tmp___7, 0L) VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, cf={18446744073709551620:-8}, dev={0:-519}, dev={0:-519}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, skb={18446744073709551625:0}, skb={18446744073709551625:0}, tmp___7=0, tmp___8=0] [L5268] COND FALSE !(\read(tmp___8)) [L5276] return (0); VAL [\result=0, __key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, cf={18446744073709551620:-8}, dev={0:-519}, dev={0:-519}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, skb={18446744073709551625:0}, skb={18446744073709551625:0}, tmp___7=0, tmp___8=0] [L6072] RET, EXPR can_dropped_invalid_skb(netdev, skb) [L6072] tmp___8 = can_dropped_invalid_skb(netdev, skb) [L6074] COND FALSE !(\read(tmp___8)) VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, cf={18446744073709551620:-8}, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, netdev={0:-519}, netdev={0:-519}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={18446744073709551625:0}, skb={18446744073709551625:0}, stats={0:-331}, tmp___7={0:-520}, tmp___8=0] [L6079] CALL, EXPR usb_alloc_urb(0, 32U) VAL [\old(iso_packets)=0, \old(ldv_urb_state)=0, \old(mem_flags)=32, __key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6830] void *arbitrary_memory ; [L6831] void *tmp___7 ; VAL [\old(iso_packets)=0, \old(ldv_urb_state)=0, \old(mem_flags)=32, __key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, iso_packets=0, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, mem_flags=32, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6834] COND TRUE 1 VAL [\old(iso_packets)=0, \old(ldv_urb_state)=0, \old(mem_flags)=32, __key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, iso_packets=0, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, mem_flags=32, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6837] CALL, EXPR ldv_undefined_pointer() VAL [\old(ldv_urb_state)=0, __key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6982] CALL, EXPR ldv_malloc(0UL) VAL [\old(ldv_urb_state)=0, \old(size)=0, __key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6911] COND FALSE !(__VERIFIER_nondet_bool()) [L6912] return malloc(size); [L6982] RET, EXPR ldv_malloc(0UL) VAL [\old(ldv_urb_state)=0, __key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_malloc(0UL)={-3:0}, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6982] return ldv_malloc(0UL); [L6837] RET, EXPR ldv_undefined_pointer() VAL [\old(iso_packets)=0, \old(ldv_urb_state)=0, \old(mem_flags)=32, __key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, iso_packets=0, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_undefined_pointer()={-3:0}, ldv_urb_state=0, mem_flags=32, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6837] tmp___7 = ldv_undefined_pointer() [L6838] arbitrary_memory = tmp___7 VAL [\old(iso_packets)=0, \old(ldv_urb_state)=0, \old(mem_flags)=32, __key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, arbitrary_memory={-3:0}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, iso_packets=0, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, mem_flags=32, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7={-3:0}] [L6840] COND FALSE !(! arbitrary_memory) [L6844] ldv_urb_state = ldv_urb_state + 1 [L6845] return ((struct urb *)arbitrary_memory); VAL [\old(iso_packets)=0, \old(ldv_urb_state)=0, \old(mem_flags)=32, \result={-3:0}, __key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, arbitrary_memory={-3:0}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, iso_packets=0, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, mem_flags=32, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7={-3:0}] [L6079] RET, EXPR usb_alloc_urb(0, 32U) VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, cf={18446744073709551620:-8}, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, netdev={0:-519}, netdev={0:-519}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={18446744073709551625:0}, skb={18446744073709551625:0}, stats={0:-331}, tmp___7={0:-520}, tmp___8=0, usb_alloc_urb(0, 32U)={-3:0}] [L6079] urb = usb_alloc_urb(0, 32U) [L6081] COND FALSE !(! urb) [L6089] EXPR dev->udev VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, cf={18446744073709551620:-8}, context={0:0}, dev={0:-520}, dev->udev={18446744073709551627:18446744073709551629}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, netdev={0:-519}, netdev={0:-519}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={18446744073709551625:0}, skb={18446744073709551625:0}, stats={0:-331}, tmp___7={0:-520}, tmp___8=0, urb={-3:0}] [L6089] CALL, EXPR usb_alloc_coherent(dev->udev, size, 32U, & urb->transfer_dma) VAL [\old(ldv_coherent_state)=0, \old(mem_flags)=32, \old(size)=28, __key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, dev={18446744073709551627:18446744073709551629}, dma={-3:104}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6773] void *arbitrary_memory ; [L6774] void *tmp___7 ; VAL [\old(ldv_coherent_state)=0, \old(mem_flags)=32, \old(size)=28, __key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, dev={18446744073709551627:18446744073709551629}, dev={18446744073709551627:18446744073709551629}, dma={-3:104}, dma={-3:104}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, mem_flags=32, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28] [L6777] COND TRUE 1 VAL [\old(ldv_coherent_state)=0, \old(mem_flags)=32, \old(size)=28, __key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, dev={18446744073709551627:18446744073709551629}, dev={18446744073709551627:18446744073709551629}, dma={-3:104}, dma={-3:104}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, mem_flags=32, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28] [L6780] CALL, EXPR ldv_undefined_pointer() VAL [\old(ldv_coherent_state)=0, __key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6982] CALL, EXPR ldv_malloc(0UL) VAL [\old(ldv_coherent_state)=0, \old(size)=0, __key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6911] COND FALSE !(__VERIFIER_nondet_bool()) [L6912] return malloc(size); [L6982] RET, EXPR ldv_malloc(0UL) VAL [\old(ldv_coherent_state)=0, __key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_malloc(0UL)={-18446744073709551617:0}, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6982] return ldv_malloc(0UL); [L6780] RET, EXPR ldv_undefined_pointer() VAL [\old(ldv_coherent_state)=0, \old(mem_flags)=32, \old(size)=28, __key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, dev={18446744073709551627:18446744073709551629}, dev={18446744073709551627:18446744073709551629}, dma={-3:104}, dma={-3:104}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_undefined_pointer()={-18446744073709551617:0}, ldv_urb_state=1, mem_flags=32, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28] [L6780] tmp___7 = ldv_undefined_pointer() [L6781] arbitrary_memory = tmp___7 VAL [\old(ldv_coherent_state)=0, \old(mem_flags)=32, \old(size)=28, __key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, arbitrary_memory={-18446744073709551617:0}, dev={18446744073709551627:18446744073709551629}, dev={18446744073709551627:18446744073709551629}, dma={-3:104}, dma={-3:104}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, mem_flags=32, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, tmp___7={-18446744073709551617:0}] [L6783] COND FALSE !(! arbitrary_memory) [L6787] ldv_coherent_state = ldv_coherent_state + 1 [L6788] return (arbitrary_memory); VAL [\old(ldv_coherent_state)=0, \old(mem_flags)=32, \old(size)=28, \result={-18446744073709551617:0}, __key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, arbitrary_memory={-18446744073709551617:0}, dev={18446744073709551627:18446744073709551629}, dev={18446744073709551627:18446744073709551629}, dma={-3:104}, dma={-3:104}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, mem_flags=32, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, tmp___7={-18446744073709551617:0}] [L6089] RET, EXPR usb_alloc_coherent(dev->udev, size, 32U, & urb->transfer_dma) VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, cf={18446744073709551620:-8}, context={0:0}, dev={0:-520}, dev->udev={18446744073709551627:18446744073709551629}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, netdev={0:-519}, netdev={0:-519}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={18446744073709551625:0}, skb={18446744073709551625:0}, stats={0:-331}, tmp___7={0:-520}, tmp___8=0, urb={-3:0}, usb_alloc_coherent(dev->udev, size, 32U, & urb->transfer_dma)={-18446744073709551617:0}] [L6089] tmp___9 = usb_alloc_coherent(dev->udev, size, 32U, & urb->transfer_dma) [L6090] buf = (u8 *)tmp___9 VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, buf={-18446744073709551617:0}, cf={18446744073709551620:-8}, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, netdev={0:-519}, netdev={0:-519}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={18446744073709551625:0}, skb={18446744073709551625:0}, stats={0:-331}, tmp___7={0:-520}, tmp___8=0, tmp___9={-18446744073709551617:0}, urb={-3:0}] [L6092] COND FALSE !(! buf) [L6100] msg = (struct ems_cpc_msg *)(buf + 4) [L6101] EXPR cf->can_id [L6101] msg->msg.can_msg.id = cf->can_id & 536870911U [L6102] EXPR cf->can_dlc [L6102] msg->msg.can_msg.length = cf->can_dlc [L6103] EXPR cf->can_id VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, buf={-18446744073709551617:0}, cf={18446744073709551620:-8}, cf->can_id=18446744073709551622, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={-18446744073709551617:4}, netdev={0:-519}, netdev={0:-519}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={18446744073709551625:0}, skb={18446744073709551625:0}, stats={0:-331}, tmp___7={0:-520}, tmp___8=0, tmp___9={-18446744073709551617:0}, urb={-3:0}] [L6103] COND TRUE cf->can_id & 1073741824U [L6104] EXPR cf->can_id VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, buf={-18446744073709551617:0}, cf={18446744073709551620:-8}, cf->can_id=18446744073709551622, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={-18446744073709551617:4}, netdev={0:-519}, netdev={0:-519}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={18446744073709551625:0}, skb={18446744073709551625:0}, stats={0:-331}, tmp___7={0:-520}, tmp___8=0, tmp___9={-18446744073709551617:0}, urb={-3:0}] [L6104] COND TRUE cf->can_id & 2147483648U [L6105] msg->type = (u8 )16 VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, buf={-18446744073709551617:0}, cf={18446744073709551620:-8}, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={-18446744073709551617:4}, netdev={0:-519}, netdev={0:-519}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={18446744073709551625:0}, skb={18446744073709551625:0}, stats={0:-331}, tmp___7={0:-520}, tmp___8=0, tmp___9={-18446744073709551617:0}, urb={-3:0}] [L6109] msg->length = (u8 )5 VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, buf={-18446744073709551617:0}, cf={18446744073709551620:-8}, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={-18446744073709551617:4}, netdev={0:-519}, netdev={0:-519}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={18446744073709551625:0}, skb={18446744073709551625:0}, stats={0:-331}, tmp___7={0:-520}, tmp___8=0, tmp___9={-18446744073709551617:0}, urb={-3:0}] [L6132] EXPR msg->msg.can_msg.id [L6132] msg->msg.can_msg.id = msg->msg.can_msg.id [L6133] i = 0 VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, buf={-18446744073709551617:0}, cf={18446744073709551620:-8}, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, i=0, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={-18446744073709551617:4}, netdev={0:-519}, netdev={0:-519}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={18446744073709551625:0}, skb={18446744073709551625:0}, stats={0:-331}, tmp___7={0:-520}, tmp___8=0, tmp___9={-18446744073709551617:0}, urb={-3:0}] [L6135] COND TRUE 1 VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, buf={-18446744073709551617:0}, cf={18446744073709551620:-8}, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, i=0, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={-18446744073709551617:4}, netdev={0:-519}, netdev={0:-519}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={18446744073709551625:0}, skb={18446744073709551625:0}, stats={0:-331}, tmp___7={0:-520}, tmp___8=0, tmp___9={-18446744073709551617:0}, urb={-3:0}] [L6137] COND TRUE i < 10 VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, buf={-18446744073709551617:0}, cf={18446744073709551620:-8}, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, i=0, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={-18446744073709551617:4}, netdev={0:-519}, netdev={0:-519}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={18446744073709551625:0}, skb={18446744073709551625:0}, stats={0:-331}, tmp___7={0:-520}, tmp___8=0, tmp___9={-18446744073709551617:0}, urb={-3:0}] [L6141] EXPR dev->tx_contexts[i].echo_index VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, buf={-18446744073709551617:0}, cf={18446744073709551620:-8}, context={0:0}, dev={0:-520}, dev->tx_contexts[i].echo_index=4294967306, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, i=0, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={-18446744073709551617:4}, netdev={0:-519}, netdev={0:-519}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={18446744073709551625:0}, skb={18446744073709551625:0}, stats={0:-331}, tmp___7={0:-520}, tmp___8=0, tmp___9={-18446744073709551617:0}, urb={-3:0}] [L6141] COND TRUE dev->tx_contexts[i].echo_index == 10U [L6142] context = & dev->tx_contexts[i] VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, buf={-18446744073709551617:0}, cf={18446744073709551620:-8}, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, i=0, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={-18446744073709551617:4}, netdev={0:-519}, netdev={0:-519}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={18446744073709551625:0}, skb={18446744073709551625:0}, stats={0:-331}, tmp___7={0:-520}, tmp___8=0, tmp___9={-18446744073709551617:0}, urb={-3:0}] [L6151] COND TRUE ! context VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, buf={-18446744073709551617:0}, cf={18446744073709551620:-8}, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, i=0, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={-18446744073709551617:4}, netdev={0:-519}, netdev={0:-519}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={18446744073709551625:0}, skb={18446744073709551625:0}, stats={0:-331}, tmp___7={0:-520}, tmp___8=0, tmp___9={-18446744073709551617:0}, urb={-3:0}] [L6153] FCALL usb_unanchor_urb(urb) VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, buf={-18446744073709551617:0}, cf={18446744073709551620:-8}, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, i=0, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={-18446744073709551617:4}, netdev={0:-519}, netdev={0:-519}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={18446744073709551625:0}, skb={18446744073709551625:0}, stats={0:-331}, tmp___7={0:-520}, tmp___8=0, tmp___9={-18446744073709551617:0}, urb={-3:0}] [L6154] EXPR dev->udev [L6154] EXPR urb->transfer_dma VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, buf={-18446744073709551617:0}, cf={18446744073709551620:-8}, context={0:0}, dev={0:-520}, dev->udev={18446744073709551627:18446744073709551629}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, i=0, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={-18446744073709551617:4}, netdev={0:-519}, netdev={0:-519}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={18446744073709551625:0}, skb={18446744073709551625:0}, stats={0:-331}, tmp___7={0:-520}, tmp___8=0, tmp___9={-18446744073709551617:0}, urb={-3:0}, urb->transfer_dma=18446744073709551628] [L6154] CALL usb_free_coherent(dev->udev, size, (void *)buf, urb->transfer_dma) VAL [\old(dma)=12, \old(ldv_coherent_state)=1, \old(size)=28, __key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, addr={-18446744073709551617:0}, dev={18446744073709551627:18446744073709551629}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6802] COND TRUE 1 VAL [\old(dma)=12, \old(ldv_coherent_state)=1, \old(size)=28, __key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, addr={-18446744073709551617:0}, addr={-18446744073709551617:0}, dev={18446744073709551627:18446744073709551629}, dev={18446744073709551627:18446744073709551629}, dma=12, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28] [L6804] COND FALSE !(! ((unsigned long )addr != (unsigned long )((void *)0))) VAL [\old(dma)=12, \old(ldv_coherent_state)=1, \old(size)=28, __key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, addr={-18446744073709551617:0}, addr={-18446744073709551617:0}, dev={18446744073709551627:18446744073709551629}, dev={18446744073709551627:18446744073709551629}, dma=12, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28] [L6810] COND TRUE \read(*addr) VAL [\old(dma)=12, \old(ldv_coherent_state)=1, \old(size)=28, __key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, addr={-18446744073709551617:0}, addr={-18446744073709551617:0}, dev={18446744073709551627:18446744073709551629}, dev={18446744073709551627:18446744073709551629}, dma=12, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28] [L6811] COND TRUE ldv_coherent_state >= 1 VAL [\old(dma)=12, \old(ldv_coherent_state)=1, \old(size)=28, __key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, addr={-18446744073709551617:0}, addr={-18446744073709551617:0}, dev={18446744073709551627:18446744073709551629}, dev={18446744073709551627:18446744073709551629}, dma=12, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28] [L6817] ldv_coherent_state = ldv_coherent_state - 1 VAL [\old(dma)=12, \old(ldv_coherent_state)=1, \old(size)=28, __key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, addr={-18446744073709551617:0}, addr={-18446744073709551617:0}, dev={18446744073709551627:18446744073709551629}, dev={18446744073709551627:18446744073709551629}, dma=12, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28] [L6154] RET usb_free_coherent(dev->udev, size, (void *)buf, urb->transfer_dma) VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, buf={-18446744073709551617:0}, cf={18446744073709551620:-8}, context={0:0}, dev={0:-520}, dev->udev={18446744073709551627:18446744073709551629}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, i=0, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={-18446744073709551617:4}, netdev={0:-519}, netdev={0:-519}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={18446744073709551625:0}, skb={18446744073709551625:0}, stats={0:-331}, tmp___7={0:-520}, tmp___8=0, tmp___9={-18446744073709551617:0}, urb={-3:0}, urb->transfer_dma=18446744073709551628] [L6155] netdev->dev.parent [L6157] return ((netdev_tx_t )16); VAL [\result=16, __key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, buf={-18446744073709551617:0}, cf={18446744073709551620:-8}, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, i=0, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={-18446744073709551617:4}, netdev={0:-519}, netdev={0:-519}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={18446744073709551625:0}, skb={18446744073709551625:0}, stats={0:-331}, tmp___7={0:-520}, tmp___8=0, tmp___9={-18446744073709551617:0}, urb={-3:0}] [L6704] RET ems_usb_start_xmit(var_group2, var_group1) [L6641] COND TRUE 1 VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_s_ems_usb_driver_usb_driver=0, ldv_s_ems_usb_netdev_ops_net_device_ops=0, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7=0, tmp___8=2, tmp___9=1, var_group1={0:-519}, var_group2={18446744073709551625:0}] [L6644] tmp___9 = __VERIFIER_nondet_int() [L6646] COND FALSE !(\read(tmp___9)) VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_s_ems_usb_driver_usb_driver=0, ldv_s_ems_usb_netdev_ops_net_device_ops=0, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7=0, tmp___8=2, tmp___9=0, var_group1={0:-519}, var_group2={18446744073709551625:0}] [L6648] COND FALSE !(! (ldv_s_ems_usb_netdev_ops_net_device_ops == 0)) VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_s_ems_usb_driver_usb_driver=0, ldv_s_ems_usb_netdev_ops_net_device_ops=0, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7=0, tmp___8=2, tmp___9=0, var_group1={0:-519}, var_group2={18446744073709551625:0}] [L6650] COND FALSE !(! (ldv_s_ems_usb_driver_usb_driver == 0)) VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_s_ems_usb_driver_usb_driver=0, ldv_s_ems_usb_netdev_ops_net_device_ops=0, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7=0, tmp___8=2, tmp___9=0, var_group1={0:-519}, var_group2={18446744073709551625:0}] [L6742] CALL ems_usb_exit() VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6587] FCALL usb_deregister(& ems_usb_driver) [L6742] RET ems_usb_exit() VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_s_ems_usb_driver_usb_driver=0, ldv_s_ems_usb_netdev_ops_net_device_ops=0, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7=0, tmp___8=2, tmp___9=0, var_group1={0:-519}, var_group2={18446744073709551625:0}] [L6746] CALL ldv_check_final_state() [L6889] COND FALSE !(ldv_urb_state == 0) VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6892] CALL ldv_blast_assert() VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6754] reach_error() VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551623:18446744073709551617}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 36 procedures, 432 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 79.8s, OverallIterations: 26, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 59.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 17287 SdHoareTripleChecker+Valid, 48.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15953 mSDsluCounter, 106361 SdHoareTripleChecker+Invalid, 43.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 87395 mSDsCounter, 8031 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 28090 IncrementalHoareTripleChecker+Invalid, 36122 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8031 mSolverCounterUnsat, 18966 mSDtfsCounter, 28090 mSolverCounterSat, 0.5s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1396 GetRequests, 1071 SyntacticMatches, 1 SemanticMatches, 324 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8158occurred in iteration=21, InterpolantAutomatonStates: 266, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 8.4s AutomataMinimizationTime, 25 MinimizatonAttempts, 29427 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 7.5s InterpolantComputationTime, 2617 NumberOfCodeBlocks, 2617 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 2685 ConstructedInterpolants, 0 QuantifiedInterpolants, 5143 SizeOfPredicates, 7 NumberOfNonLiveVariables, 4434 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 31 InterpolantComputations, 23 PerfectInterpolantSequences, 256/284 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-20 06:40:33,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 01d4ebb86f2bde0df0d47bbd5d9b632b620f2501e68770553e85fb2bb5a7d15a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:40:35,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:40:35,525 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:40:35,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:40:35,563 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:40:35,564 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:40:35,566 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:40:35,569 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:40:35,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:40:35,572 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:40:35,573 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:40:35,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:40:35,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:40:35,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:40:35,579 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:40:35,580 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:40:35,581 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:40:35,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:40:35,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:40:35,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:40:35,590 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:40:35,591 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:40:35,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:40:35,594 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:40:35,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:40:35,598 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:40:35,599 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:40:35,600 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:40:35,600 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:40:35,601 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:40:35,602 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:40:35,603 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:40:35,604 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:40:35,605 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:40:35,606 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:40:35,606 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:40:35,607 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:40:35,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:40:35,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:40:35,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:40:35,610 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:40:35,611 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-11-20 06:40:35,637 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:40:35,637 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:40:35,638 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:40:35,638 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:40:35,638 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:40:35,639 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:40:35,639 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:40:35,640 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:40:35,640 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:40:35,640 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:40:35,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:40:35,641 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:40:35,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:40:35,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:40:35,641 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 06:40:35,641 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 06:40:35,642 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 06:40:35,642 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:40:35,642 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:40:35,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:40:35,643 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:40:35,643 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:40:35,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:40:35,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:40:35,644 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:40:35,644 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:40:35,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:40:35,644 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-20 06:40:35,644 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 06:40:35,645 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:40:35,645 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:40:35,645 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:40:35,645 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:40:35,646 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 06:40:35,646 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01d4ebb86f2bde0df0d47bbd5d9b632b620f2501e68770553e85fb2bb5a7d15a [2021-11-20 06:40:36,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:40:36,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:40:36,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:40:36,041 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:40:36,042 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:40:36,043 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2021-11-20 06:40:36,107 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/data/864c40715/6b50d12934a7497e8cd9c7098a928b19/FLAG6c9596f8f [2021-11-20 06:40:36,903 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:40:36,904 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2021-11-20 06:40:36,947 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/data/864c40715/6b50d12934a7497e8cd9c7098a928b19/FLAG6c9596f8f [2021-11-20 06:40:37,433 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/data/864c40715/6b50d12934a7497e8cd9c7098a928b19 [2021-11-20 06:40:37,437 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:40:37,439 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:40:37,441 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:40:37,441 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:40:37,445 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:40:37,446 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:40:37" (1/1) ... [2021-11-20 06:40:37,447 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21d7069f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:40:37, skipping insertion in model container [2021-11-20 06:40:37,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:40:37" (1/1) ... [2021-11-20 06:40:37,455 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:40:37,599 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:40:38,955 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i[191320,191333] [2021-11-20 06:40:39,000 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:40:39,056 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-20 06:40:39,162 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:40:39,429 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i[191320,191333] [2021-11-20 06:40:39,456 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:40:39,495 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:40:39,732 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i[191320,191333] [2021-11-20 06:40:39,738 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:40:40,035 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:40:40,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:40:40 WrapperNode [2021-11-20 06:40:40,035 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:40:40,037 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:40:40,037 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:40:40,037 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:40:40,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:40:40" (1/1) ... [2021-11-20 06:40:40,119 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:40:40" (1/1) ... [2021-11-20 06:40:40,224 INFO L137 Inliner]: procedures = 148, calls = 733, calls flagged for inlining = 54, calls inlined = 44, statements flattened = 1342 [2021-11-20 06:40:40,224 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:40:40,225 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:40:40,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:40:40,226 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:40:40,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:40:40" (1/1) ... [2021-11-20 06:40:40,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:40:40" (1/1) ... [2021-11-20 06:40:40,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:40:40" (1/1) ... [2021-11-20 06:40:40,266 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:40:40" (1/1) ... [2021-11-20 06:40:40,354 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:40:40" (1/1) ... [2021-11-20 06:40:40,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:40:40" (1/1) ... [2021-11-20 06:40:40,394 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:40:40" (1/1) ... [2021-11-20 06:40:40,429 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:40:40,431 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:40:40,432 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:40:40,432 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:40:40,433 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:40:40" (1/1) ... [2021-11-20 06:40:40,440 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:40:40,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:40:40,464 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:40:40,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:40:40,502 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-20 06:40:40,502 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-20 06:40:40,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-20 06:40:40,503 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_init [2021-11-20 06:40:40,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_init [2021-11-20 06:40:40,503 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-11-20 06:40:40,503 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-11-20 06:40:40,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-20 06:40:40,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-20 06:40:40,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-20 06:40:40,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-20 06:40:40,504 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-20 06:40:40,504 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-20 06:40:40,504 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_control_cmd [2021-11-20 06:40:40,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_control_cmd [2021-11-20 06:40:40,504 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-20 06:40:40,505 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-20 06:40:40,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 06:40:40,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 06:40:40,505 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_exit [2021-11-20 06:40:40,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_exit [2021-11-20 06:40:40,505 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2021-11-20 06:40:40,506 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2021-11-20 06:40:40,506 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-20 06:40:40,506 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-20 06:40:40,506 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2021-11-20 06:40:40,506 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2021-11-20 06:40:40,506 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2021-11-20 06:40:40,507 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2021-11-20 06:40:40,507 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2021-11-20 06:40:40,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2021-11-20 06:40:40,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-20 06:40:40,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-20 06:40:40,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-20 06:40:40,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-20 06:40:40,508 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2021-11-20 06:40:40,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2021-11-20 06:40:40,508 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-20 06:40:40,508 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-20 06:40:40,509 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_command_msg [2021-11-20 06:40:40,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_command_msg [2021-11-20 06:40:40,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 06:40:40,509 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_all_urbs [2021-11-20 06:40:40,509 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_all_urbs [2021-11-20 06:40:40,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:40:40,510 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-20 06:40:40,510 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-20 06:40:40,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 06:40:40,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 06:40:40,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-20 06:40:40,511 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_write_mode [2021-11-20 06:40:40,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_write_mode [2021-11-20 06:40:40,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-20 06:40:40,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-20 06:40:40,511 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2021-11-20 06:40:40,511 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2021-11-20 06:40:40,512 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2021-11-20 06:40:40,512 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2021-11-20 06:40:40,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 06:40:40,512 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-20 06:40:40,512 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-20 06:40:40,512 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-11-20 06:40:40,513 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-11-20 06:40:40,513 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2021-11-20 06:40:40,513 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2021-11-20 06:40:40,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-20 06:40:40,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-20 06:40:40,514 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2021-11-20 06:40:40,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2021-11-20 06:40:40,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 06:40:40,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-20 06:40:40,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 06:40:40,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-20 06:40:40,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 06:40:40,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-20 06:40:40,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-20 06:40:40,515 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-20 06:40:40,515 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-20 06:40:40,515 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2021-11-20 06:40:40,516 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2021-11-20 06:40:40,516 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-20 06:40:40,516 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-20 06:40:40,516 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2021-11-20 06:40:40,516 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2021-11-20 06:40:40,516 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-11-20 06:40:40,517 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-11-20 06:40:40,517 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-20 06:40:40,517 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-20 06:40:40,517 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2021-11-20 06:40:40,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2021-11-20 06:40:40,517 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2021-11-20 06:40:40,518 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2021-11-20 06:40:40,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-20 06:40:40,518 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2021-11-20 06:40:40,518 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2021-11-20 06:40:40,518 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2021-11-20 06:40:40,518 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2021-11-20 06:40:40,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:40:40,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:40:40,919 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:40:40,936 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:40:43,343 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2021-11-20 06:40:45,617 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-20 06:40:54,487 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false; [2021-11-20 06:40:54,487 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false; [2021-11-20 06:40:54,589 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:40:54,601 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:40:54,601 INFO L301 CfgBuilder]: Removed 13 assume(true) statements. [2021-11-20 06:40:54,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:40:54 BoogieIcfgContainer [2021-11-20 06:40:54,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:40:54,606 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:40:54,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:40:54,609 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:40:54,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:40:37" (1/3) ... [2021-11-20 06:40:54,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d4ce41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:40:54, skipping insertion in model container [2021-11-20 06:40:54,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:40:40" (2/3) ... [2021-11-20 06:40:54,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d4ce41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:40:54, skipping insertion in model container [2021-11-20 06:40:54,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:40:54" (3/3) ... [2021-11-20 06:40:54,612 INFO L111 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2021-11-20 06:40:54,617 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:40:54,617 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 06:40:54,665 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:40:54,672 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 06:40:54,672 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 06:40:54,705 INFO L276 IsEmpty]: Start isEmpty. Operand has 431 states, 304 states have (on average 1.3519736842105263) internal successors, (411), 316 states have internal predecessors, (411), 91 states have call successors, (91), 35 states have call predecessors, (91), 34 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2021-11-20 06:40:54,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 06:40:54,711 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:40:54,712 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:40:54,712 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:40:54,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:40:54,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1517292025, now seen corresponding path program 1 times [2021-11-20 06:40:54,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:40:54,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2121754159] [2021-11-20 06:40:54,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:40:54,732 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:40:54,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:40:54,738 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:40:54,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 06:40:55,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:55,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 06:40:55,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:40:55,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:40:55,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:40:55,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:40:55,555 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:40:55,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2121754159] [2021-11-20 06:40:55,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2121754159] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:40:55,556 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:40:55,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 3 [2021-11-20 06:40:55,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920662092] [2021-11-20 06:40:55,558 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:40:55,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:40:55,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:40:55,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:40:55,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:40:55,606 INFO L87 Difference]: Start difference. First operand has 431 states, 304 states have (on average 1.3519736842105263) internal successors, (411), 316 states have internal predecessors, (411), 91 states have call successors, (91), 35 states have call predecessors, (91), 34 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 06:40:55,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:40:55,789 INFO L93 Difference]: Finished difference Result 1253 states and 1768 transitions. [2021-11-20 06:40:55,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:40:55,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2021-11-20 06:40:55,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:40:55,816 INFO L225 Difference]: With dead ends: 1253 [2021-11-20 06:40:55,816 INFO L226 Difference]: Without dead ends: 824 [2021-11-20 06:40:55,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:40:55,827 INFO L933 BasicCegarLoop]: 695 mSDtfsCounter, 539 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:40:55,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [539 Valid, 1229 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:40:55,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2021-11-20 06:40:55,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 820. [2021-11-20 06:40:55,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 581 states have (on average 1.2581755593803787) internal successors, (731), 593 states have internal predecessors, (731), 173 states have call successors, (173), 66 states have call predecessors, (173), 65 states have return successors, (172), 165 states have call predecessors, (172), 169 states have call successors, (172) [2021-11-20 06:40:55,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1076 transitions. [2021-11-20 06:40:55,967 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1076 transitions. Word has length 16 [2021-11-20 06:40:55,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:40:55,968 INFO L470 AbstractCegarLoop]: Abstraction has 820 states and 1076 transitions. [2021-11-20 06:40:55,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 06:40:55,968 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1076 transitions. [2021-11-20 06:40:55,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 06:40:55,969 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:40:55,969 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:40:55,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 06:40:56,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:40:56,190 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:40:56,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:40:56,191 INFO L85 PathProgramCache]: Analyzing trace with hash 208359179, now seen corresponding path program 1 times [2021-11-20 06:40:56,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:40:56,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [135644395] [2021-11-20 06:40:56,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:40:56,192 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:40:56,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:40:56,194 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:40:56,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 06:40:56,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:56,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 06:40:56,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:40:56,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:40:56,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:40:56,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:40:56,985 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:40:56,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [135644395] [2021-11-20 06:40:56,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [135644395] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:40:56,985 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:40:56,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 3 [2021-11-20 06:40:56,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501370340] [2021-11-20 06:40:56,986 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:40:56,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:40:56,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:40:56,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:40:56,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:40:56,988 INFO L87 Difference]: Start difference. First operand 820 states and 1076 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 06:40:57,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:40:57,129 INFO L93 Difference]: Finished difference Result 2433 states and 3207 transitions. [2021-11-20 06:40:57,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:40:57,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-11-20 06:40:57,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:40:57,144 INFO L225 Difference]: With dead ends: 2433 [2021-11-20 06:40:57,144 INFO L226 Difference]: Without dead ends: 1617 [2021-11-20 06:40:57,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:40:57,149 INFO L933 BasicCegarLoop]: 630 mSDtfsCounter, 529 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:40:57,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [529 Valid, 1161 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:40:57,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1617 states. [2021-11-20 06:40:57,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1617 to 1610. [2021-11-20 06:40:57,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1610 states, 1141 states have (on average 1.2541630148992111) internal successors, (1431), 1160 states have internal predecessors, (1431), 340 states have call successors, (340), 129 states have call predecessors, (340), 128 states have return successors, (346), 328 states have call predecessors, (346), 336 states have call successors, (346) [2021-11-20 06:40:57,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1610 states to 1610 states and 2117 transitions. [2021-11-20 06:40:57,275 INFO L78 Accepts]: Start accepts. Automaton has 1610 states and 2117 transitions. Word has length 17 [2021-11-20 06:40:57,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:40:57,276 INFO L470 AbstractCegarLoop]: Abstraction has 1610 states and 2117 transitions. [2021-11-20 06:40:57,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 06:40:57,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1610 states and 2117 transitions. [2021-11-20 06:40:57,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-20 06:40:57,289 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:40:57,290 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:40:57,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-20 06:40:57,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:40:57,506 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:40:57,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:40:57,507 INFO L85 PathProgramCache]: Analyzing trace with hash 26582145, now seen corresponding path program 1 times [2021-11-20 06:40:57,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:40:57,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2065604882] [2021-11-20 06:40:57,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:40:57,508 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:40:57,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:40:57,509 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:40:57,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 06:40:57,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:40:58,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 06:40:58,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:40:58,515 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:40:58,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:40:58,959 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:40:58,960 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:40:58,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2065604882] [2021-11-20 06:40:58,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2065604882] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:40:58,964 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:40:58,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-20 06:40:58,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364295764] [2021-11-20 06:40:58,967 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:40:58,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:40:58,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:40:58,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:40:58,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:40:58,969 INFO L87 Difference]: Start difference. First operand 1610 states and 2117 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-20 06:40:59,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:40:59,131 INFO L93 Difference]: Finished difference Result 3212 states and 4225 transitions. [2021-11-20 06:40:59,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:40:59,132 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 71 [2021-11-20 06:40:59,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:40:59,144 INFO L225 Difference]: With dead ends: 3212 [2021-11-20 06:40:59,144 INFO L226 Difference]: Without dead ends: 1610 [2021-11-20 06:40:59,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:40:59,152 INFO L933 BasicCegarLoop]: 546 mSDtfsCounter, 0 mSDsluCounter, 1633 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2179 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:40:59,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2179 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:40:59,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1610 states. [2021-11-20 06:40:59,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1610 to 1610. [2021-11-20 06:40:59,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1610 states, 1141 states have (on average 1.2532865907099036) internal successors, (1430), 1160 states have internal predecessors, (1430), 340 states have call successors, (340), 129 states have call predecessors, (340), 128 states have return successors, (346), 328 states have call predecessors, (346), 336 states have call successors, (346) [2021-11-20 06:40:59,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1610 states to 1610 states and 2116 transitions. [2021-11-20 06:40:59,261 INFO L78 Accepts]: Start accepts. Automaton has 1610 states and 2116 transitions. Word has length 71 [2021-11-20 06:40:59,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:40:59,262 INFO L470 AbstractCegarLoop]: Abstraction has 1610 states and 2116 transitions. [2021-11-20 06:40:59,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-20 06:40:59,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1610 states and 2116 transitions. [2021-11-20 06:40:59,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-20 06:40:59,268 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:40:59,268 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:40:59,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-20 06:40:59,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:40:59,487 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:40:59,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:40:59,487 INFO L85 PathProgramCache]: Analyzing trace with hash 2146869344, now seen corresponding path program 1 times [2021-11-20 06:40:59,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:40:59,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [43185275] [2021-11-20 06:40:59,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:40:59,489 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:40:59,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:40:59,491 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:40:59,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 06:40:59,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:41:00,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 06:41:00,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:41:00,467 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:41:00,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:41:00,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:41:00,783 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:41:00,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [43185275] [2021-11-20 06:41:00,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [43185275] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:41:00,783 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:41:00,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-20 06:41:00,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694621413] [2021-11-20 06:41:00,784 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:41:00,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:41:00,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:41:00,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:41:00,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:41:00,786 INFO L87 Difference]: Start difference. First operand 1610 states and 2116 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-20 06:41:01,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:41:01,426 INFO L93 Difference]: Finished difference Result 4640 states and 6494 transitions. [2021-11-20 06:41:01,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:41:01,427 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 71 [2021-11-20 06:41:01,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:41:01,450 INFO L225 Difference]: With dead ends: 4640 [2021-11-20 06:41:01,450 INFO L226 Difference]: Without dead ends: 3041 [2021-11-20 06:41:01,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:41:01,459 INFO L933 BasicCegarLoop]: 736 mSDtfsCounter, 374 mSDsluCounter, 1074 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 1810 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:41:01,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [493 Valid, 1810 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 06:41:01,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3041 states. [2021-11-20 06:41:01,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3041 to 3017. [2021-11-20 06:41:01,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3017 states, 2140 states have (on average 1.3191588785046728) internal successors, (2823), 2191 states have internal predecessors, (2823), 748 states have call successors, (748), 129 states have call predecessors, (748), 128 states have return successors, (770), 720 states have call predecessors, (770), 744 states have call successors, (770) [2021-11-20 06:41:01,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3017 states to 3017 states and 4341 transitions. [2021-11-20 06:41:01,717 INFO L78 Accepts]: Start accepts. Automaton has 3017 states and 4341 transitions. Word has length 71 [2021-11-20 06:41:01,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:41:01,717 INFO L470 AbstractCegarLoop]: Abstraction has 3017 states and 4341 transitions. [2021-11-20 06:41:01,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-20 06:41:01,718 INFO L276 IsEmpty]: Start isEmpty. Operand 3017 states and 4341 transitions. [2021-11-20 06:41:01,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-20 06:41:01,721 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:41:01,722 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:41:01,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-20 06:41:01,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:41:01,941 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:41:01,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:41:01,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1152569613, now seen corresponding path program 1 times [2021-11-20 06:41:01,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:41:01,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1553365140] [2021-11-20 06:41:01,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:41:01,943 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:41:01,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:41:01,944 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:41:01,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 06:41:02,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:41:02,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 06:41:02,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:41:02,826 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:41:02,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:41:03,121 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:41:03,121 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:41:03,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1553365140] [2021-11-20 06:41:03,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1553365140] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:41:03,121 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:41:03,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-20 06:41:03,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484581042] [2021-11-20 06:41:03,122 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:41:03,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:41:03,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:41:03,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:41:03,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:41:03,123 INFO L87 Difference]: Start difference. First operand 3017 states and 4341 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-20 06:41:04,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:41:04,402 INFO L93 Difference]: Finished difference Result 10672 states and 15980 transitions. [2021-11-20 06:41:04,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:41:04,403 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 68 [2021-11-20 06:41:04,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:41:04,475 INFO L225 Difference]: With dead ends: 10672 [2021-11-20 06:41:04,475 INFO L226 Difference]: Without dead ends: 7667 [2021-11-20 06:41:04,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:41:04,490 INFO L933 BasicCegarLoop]: 1060 mSDtfsCounter, 669 mSDsluCounter, 3353 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 4413 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 06:41:04,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [742 Valid, 4413 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 06:41:04,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7667 states. [2021-11-20 06:41:04,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7667 to 3041. [2021-11-20 06:41:04,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3041 states, 2164 states have (on average 1.3156192236598891) internal successors, (2847), 2215 states have internal predecessors, (2847), 748 states have call successors, (748), 129 states have call predecessors, (748), 128 states have return successors, (770), 720 states have call predecessors, (770), 744 states have call successors, (770) [2021-11-20 06:41:04,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3041 states to 3041 states and 4365 transitions. [2021-11-20 06:41:04,834 INFO L78 Accepts]: Start accepts. Automaton has 3041 states and 4365 transitions. Word has length 68 [2021-11-20 06:41:04,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:41:04,835 INFO L470 AbstractCegarLoop]: Abstraction has 3041 states and 4365 transitions. [2021-11-20 06:41:04,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-20 06:41:04,835 INFO L276 IsEmpty]: Start isEmpty. Operand 3041 states and 4365 transitions. [2021-11-20 06:41:04,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-20 06:41:04,840 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:41:04,840 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:41:04,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-20 06:41:05,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:41:05,059 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:41:05,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:41:05,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1776712988, now seen corresponding path program 1 times [2021-11-20 06:41:05,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:41:05,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1348313808] [2021-11-20 06:41:05,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:41:05,061 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:41:05,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:41:05,062 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:41:05,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-20 06:41:05,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:41:05,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 06:41:05,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:41:05,943 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:41:05,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:41:06,226 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:41:06,226 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:41:06,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1348313808] [2021-11-20 06:41:06,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1348313808] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:41:06,227 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:41:06,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-20 06:41:06,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635928629] [2021-11-20 06:41:06,227 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:41:06,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:41:06,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:41:06,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:41:06,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:41:06,229 INFO L87 Difference]: Start difference. First operand 3041 states and 4365 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-20 06:41:07,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:41:07,246 INFO L93 Difference]: Finished difference Result 9292 states and 13796 transitions. [2021-11-20 06:41:07,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:41:07,248 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 69 [2021-11-20 06:41:07,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:41:07,336 INFO L225 Difference]: With dead ends: 9292 [2021-11-20 06:41:07,336 INFO L226 Difference]: Without dead ends: 6263 [2021-11-20 06:41:07,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:41:07,351 INFO L933 BasicCegarLoop]: 951 mSDtfsCounter, 616 mSDsluCounter, 2468 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 3419 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 06:41:07,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [671 Valid, 3419 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 06:41:07,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6263 states. [2021-11-20 06:41:07,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6263 to 3065. [2021-11-20 06:41:07,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3065 states, 2188 states have (on average 1.3121572212065813) internal successors, (2871), 2239 states have internal predecessors, (2871), 748 states have call successors, (748), 129 states have call predecessors, (748), 128 states have return successors, (770), 720 states have call predecessors, (770), 744 states have call successors, (770) [2021-11-20 06:41:07,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3065 states to 3065 states and 4389 transitions. [2021-11-20 06:41:07,659 INFO L78 Accepts]: Start accepts. Automaton has 3065 states and 4389 transitions. Word has length 69 [2021-11-20 06:41:07,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:41:07,661 INFO L470 AbstractCegarLoop]: Abstraction has 3065 states and 4389 transitions. [2021-11-20 06:41:07,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-20 06:41:07,661 INFO L276 IsEmpty]: Start isEmpty. Operand 3065 states and 4389 transitions. [2021-11-20 06:41:07,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-20 06:41:07,665 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:41:07,665 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:41:07,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-20 06:41:07,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:41:07,882 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:41:07,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:41:07,883 INFO L85 PathProgramCache]: Analyzing trace with hash 676145405, now seen corresponding path program 1 times [2021-11-20 06:41:07,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:41:07,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [768396708] [2021-11-20 06:41:07,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:41:07,884 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:41:07,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:41:07,886 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:41:07,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-20 06:41:08,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:41:08,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-20 06:41:08,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:41:08,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:41:08,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:41:10,054 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:41:10,055 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:41:10,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [768396708] [2021-11-20 06:41:10,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [768396708] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:41:10,055 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:41:10,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-20 06:41:10,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350219021] [2021-11-20 06:41:10,055 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:41:10,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:41:10,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:41:10,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:41:10,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:41:10,057 INFO L87 Difference]: Start difference. First operand 3065 states and 4389 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-20 06:41:10,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:41:10,370 INFO L93 Difference]: Finished difference Result 4633 states and 6678 transitions. [2021-11-20 06:41:10,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:41:10,371 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 69 [2021-11-20 06:41:10,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:41:10,393 INFO L225 Difference]: With dead ends: 4633 [2021-11-20 06:41:10,393 INFO L226 Difference]: Without dead ends: 3097 [2021-11-20 06:41:10,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:41:10,400 INFO L933 BasicCegarLoop]: 544 mSDtfsCounter, 2 mSDsluCounter, 2716 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3260 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:41:10,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 3260 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:41:10,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3097 states. [2021-11-20 06:41:10,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3097 to 3097. [2021-11-20 06:41:10,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3097 states, 2210 states have (on average 1.3090497737556561) internal successors, (2893), 2263 states have internal predecessors, (2893), 748 states have call successors, (748), 129 states have call predecessors, (748), 138 states have return successors, (808), 728 states have call predecessors, (808), 744 states have call successors, (808) [2021-11-20 06:41:10,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3097 states to 3097 states and 4449 transitions. [2021-11-20 06:41:10,625 INFO L78 Accepts]: Start accepts. Automaton has 3097 states and 4449 transitions. Word has length 69 [2021-11-20 06:41:10,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:41:10,626 INFO L470 AbstractCegarLoop]: Abstraction has 3097 states and 4449 transitions. [2021-11-20 06:41:10,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-20 06:41:10,626 INFO L276 IsEmpty]: Start isEmpty. Operand 3097 states and 4449 transitions. [2021-11-20 06:41:10,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-20 06:41:10,629 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:41:10,629 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:41:10,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-20 06:41:10,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:41:10,849 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:41:10,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:41:10,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1333958436, now seen corresponding path program 1 times [2021-11-20 06:41:10,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:41:10,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1903754121] [2021-11-20 06:41:10,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:41:10,850 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:41:10,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:41:10,851 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:41:10,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-20 06:41:11,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:41:11,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-20 06:41:11,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:41:11,943 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:41:11,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:41:12,718 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:41:12,718 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:41:12,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1903754121] [2021-11-20 06:41:12,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1903754121] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:41:12,719 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:41:12,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 10 [2021-11-20 06:41:12,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721073899] [2021-11-20 06:41:12,719 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:41:12,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:41:12,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:41:12,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:41:12,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:41:12,720 INFO L87 Difference]: Start difference. First operand 3097 states and 4449 transitions. Second operand has 10 states, 10 states have (on average 5.9) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (9), 5 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-20 06:41:13,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:41:13,628 INFO L93 Difference]: Finished difference Result 7309 states and 10704 transitions. [2021-11-20 06:41:13,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 06:41:13,630 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (9), 5 states have call predecessors, (9), 2 states have call successors, (9) Word has length 69 [2021-11-20 06:41:13,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:41:13,655 INFO L225 Difference]: With dead ends: 7309 [2021-11-20 06:41:13,655 INFO L226 Difference]: Without dead ends: 4224 [2021-11-20 06:41:13,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:41:13,669 INFO L933 BasicCegarLoop]: 915 mSDtfsCounter, 217 mSDsluCounter, 7008 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 7923 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 06:41:13,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 7923 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 06:41:13,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4224 states. [2021-11-20 06:41:13,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4224 to 3105. [2021-11-20 06:41:13,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3105 states, 2218 states have (on average 1.306131650135257) internal successors, (2897), 2267 states have internal predecessors, (2897), 748 states have call successors, (748), 129 states have call predecessors, (748), 138 states have return successors, (808), 732 states have call predecessors, (808), 744 states have call successors, (808) [2021-11-20 06:41:13,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3105 states to 3105 states and 4453 transitions. [2021-11-20 06:41:13,954 INFO L78 Accepts]: Start accepts. Automaton has 3105 states and 4453 transitions. Word has length 69 [2021-11-20 06:41:13,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:41:13,956 INFO L470 AbstractCegarLoop]: Abstraction has 3105 states and 4453 transitions. [2021-11-20 06:41:13,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (9), 5 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-20 06:41:13,957 INFO L276 IsEmpty]: Start isEmpty. Operand 3105 states and 4453 transitions. [2021-11-20 06:41:13,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-20 06:41:13,963 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:41:13,963 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:41:13,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-20 06:41:14,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:41:14,183 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:41:14,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:41:14,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1804654053, now seen corresponding path program 1 times [2021-11-20 06:41:14,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:41:14,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [715230751] [2021-11-20 06:41:14,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:41:14,184 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:41:14,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:41:14,185 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:41:14,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-20 06:41:14,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:41:14,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 06:41:14,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:41:15,001 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:41:15,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:41:15,354 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 06:41:15,354 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:41:15,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [715230751] [2021-11-20 06:41:15,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [715230751] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:41:15,354 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:41:15,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-20 06:41:15,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646518044] [2021-11-20 06:41:15,355 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:41:15,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:41:15,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:41:15,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:41:15,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:41:15,356 INFO L87 Difference]: Start difference. First operand 3105 states and 4453 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-20 06:41:15,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:41:15,822 INFO L93 Difference]: Finished difference Result 7485 states and 10950 transitions. [2021-11-20 06:41:15,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:41:15,824 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 75 [2021-11-20 06:41:15,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:41:15,847 INFO L225 Difference]: With dead ends: 7485 [2021-11-20 06:41:15,847 INFO L226 Difference]: Without dead ends: 4392 [2021-11-20 06:41:15,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:41:15,859 INFO L933 BasicCegarLoop]: 824 mSDtfsCounter, 168 mSDsluCounter, 2239 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 3063 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:41:15,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 3063 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:41:15,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4392 states. [2021-11-20 06:41:16,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4392 to 2793. [2021-11-20 06:41:16,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2793 states, 2004 states have (on average 1.2969061876247505) internal successors, (2599), 2029 states have internal predecessors, (2599), 652 states have call successors, (652), 127 states have call predecessors, (652), 136 states have return successors, (709), 648 states have call predecessors, (709), 648 states have call successors, (709) [2021-11-20 06:41:16,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2793 states to 2793 states and 3960 transitions. [2021-11-20 06:41:16,100 INFO L78 Accepts]: Start accepts. Automaton has 2793 states and 3960 transitions. Word has length 75 [2021-11-20 06:41:16,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:41:16,100 INFO L470 AbstractCegarLoop]: Abstraction has 2793 states and 3960 transitions. [2021-11-20 06:41:16,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-20 06:41:16,101 INFO L276 IsEmpty]: Start isEmpty. Operand 2793 states and 3960 transitions. [2021-11-20 06:41:16,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-20 06:41:16,106 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:41:16,106 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:41:16,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-20 06:41:16,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:41:16,326 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:41:16,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:41:16,327 INFO L85 PathProgramCache]: Analyzing trace with hash -506709307, now seen corresponding path program 1 times [2021-11-20 06:41:16,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:41:16,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [80273535] [2021-11-20 06:41:16,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:41:16,327 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:41:16,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:41:16,328 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:41:16,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-20 06:41:16,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:41:16,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 06:41:16,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:41:17,492 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:41:17,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:41:18,323 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 06:41:18,324 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:41:18,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [80273535] [2021-11-20 06:41:18,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [80273535] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:41:18,324 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:41:18,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-20 06:41:18,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523395196] [2021-11-20 06:41:18,324 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:41:18,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:41:18,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:41:18,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:41:18,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:41:18,326 INFO L87 Difference]: Start difference. First operand 2793 states and 3960 transitions. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 8 states have call successors, (17), 7 states have call predecessors, (17), 5 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2021-11-20 06:41:20,922 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:41:22,929 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:41:26,837 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:41:28,175 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:41:30,922 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:41:32,782 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:41:35,118 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:41:37,133 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:41:41,930 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:41:43,941 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:41:46,424 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:41:48,426 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:41:50,430 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:41:52,921 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:41:54,926 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:41:56,934 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:42:01,140 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:42:03,161 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:42:05,291 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:42:07,296 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:42:10,946 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:42:13,144 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:42:15,152 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:42:17,160 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:42:24,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:42:24,591 INFO L93 Difference]: Finished difference Result 11531 states and 16542 transitions. [2021-11-20 06:42:24,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 06:42:24,592 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 8 states have call successors, (17), 7 states have call predecessors, (17), 5 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) Word has length 75 [2021-11-20 06:42:24,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:42:24,627 INFO L225 Difference]: With dead ends: 11531 [2021-11-20 06:42:24,627 INFO L226 Difference]: Without dead ends: 9957 [2021-11-20 06:42:24,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-11-20 06:42:24,636 INFO L933 BasicCegarLoop]: 1022 mSDtfsCounter, 4963 mSDsluCounter, 2087 mSDsCounter, 0 mSdLazyCounter, 3302 mSolverCounterSat, 2065 mSolverCounterUnsat, 19 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5197 SdHoareTripleChecker+Valid, 3109 SdHoareTripleChecker+Invalid, 5386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2065 IncrementalHoareTripleChecker+Valid, 3302 IncrementalHoareTripleChecker+Invalid, 19 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 65.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:42:24,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5197 Valid, 3109 Invalid, 5386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2065 Valid, 3302 Invalid, 19 Unknown, 0 Unchecked, 65.2s Time] [2021-11-20 06:42:24,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9957 states. [2021-11-20 06:42:25,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9957 to 8639. [2021-11-20 06:42:25,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8639 states, 6194 states have (on average 1.3020665159832097) internal successors, (8065), 6273 states have internal predecessors, (8065), 2036 states have call successors, (2036), 373 states have call predecessors, (2036), 408 states have return successors, (2346), 2052 states have call predecessors, (2346), 2032 states have call successors, (2346) [2021-11-20 06:42:25,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8639 states to 8639 states and 12447 transitions. [2021-11-20 06:42:25,404 INFO L78 Accepts]: Start accepts. Automaton has 8639 states and 12447 transitions. Word has length 75 [2021-11-20 06:42:25,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:42:25,405 INFO L470 AbstractCegarLoop]: Abstraction has 8639 states and 12447 transitions. [2021-11-20 06:42:25,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 8 states have call successors, (17), 7 states have call predecessors, (17), 5 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2021-11-20 06:42:25,406 INFO L276 IsEmpty]: Start isEmpty. Operand 8639 states and 12447 transitions. [2021-11-20 06:42:25,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-20 06:42:25,410 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:42:25,410 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:42:25,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:25,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:42:25,628 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:42:25,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:25,628 INFO L85 PathProgramCache]: Analyzing trace with hash -418091033, now seen corresponding path program 1 times [2021-11-20 06:42:25,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:42:25,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [888733780] [2021-11-20 06:42:25,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:25,629 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:42:25,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:42:25,631 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:42:25,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-20 06:42:26,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:26,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 06:42:26,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:26,468 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 06:42:26,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:42:26,912 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 06:42:26,912 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:42:26,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [888733780] [2021-11-20 06:42:26,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [888733780] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:42:26,913 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:42:26,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-20 06:42:26,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598584898] [2021-11-20 06:42:26,913 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:42:26,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:42:26,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:42:26,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:42:26,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:42:26,915 INFO L87 Difference]: Start difference. First operand 8639 states and 12447 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-20 06:42:27,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:42:27,506 INFO L93 Difference]: Finished difference Result 17290 states and 25182 transitions. [2021-11-20 06:42:27,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:42:27,506 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 94 [2021-11-20 06:42:27,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:42:27,539 INFO L225 Difference]: With dead ends: 17290 [2021-11-20 06:42:27,539 INFO L226 Difference]: Without dead ends: 8663 [2021-11-20 06:42:27,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:42:27,569 INFO L933 BasicCegarLoop]: 545 mSDtfsCounter, 0 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:42:27,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1088 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:42:27,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8663 states. [2021-11-20 06:42:28,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8663 to 8663. [2021-11-20 06:42:28,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8663 states, 6218 states have (on average 1.3009006111289805) internal successors, (8089), 6297 states have internal predecessors, (8089), 2036 states have call successors, (2036), 373 states have call predecessors, (2036), 408 states have return successors, (2346), 2052 states have call predecessors, (2346), 2032 states have call successors, (2346) [2021-11-20 06:42:28,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8663 states to 8663 states and 12471 transitions. [2021-11-20 06:42:28,317 INFO L78 Accepts]: Start accepts. Automaton has 8663 states and 12471 transitions. Word has length 94 [2021-11-20 06:42:28,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:42:28,318 INFO L470 AbstractCegarLoop]: Abstraction has 8663 states and 12471 transitions. [2021-11-20 06:42:28,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-20 06:42:28,318 INFO L276 IsEmpty]: Start isEmpty. Operand 8663 states and 12471 transitions. [2021-11-20 06:42:28,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-20 06:42:28,323 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:42:28,323 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:42:28,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:28,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:42:28,539 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:42:28,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:28,539 INFO L85 PathProgramCache]: Analyzing trace with hash -769332857, now seen corresponding path program 1 times [2021-11-20 06:42:28,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:42:28,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1907783837] [2021-11-20 06:42:28,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:28,540 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:42:28,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:42:28,541 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:42:28,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-20 06:42:28,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:29,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 06:42:29,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:29,542 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 06:42:29,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:42:30,198 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 06:42:30,198 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:42:30,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1907783837] [2021-11-20 06:42:30,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1907783837] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:42:30,199 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:42:30,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-20 06:42:30,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040623937] [2021-11-20 06:42:30,199 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:42:30,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 06:42:30,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:42:30,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 06:42:30,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-20 06:42:30,201 INFO L87 Difference]: Start difference. First operand 8663 states and 12471 transitions. Second operand has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-20 06:42:30,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:42:30,794 INFO L93 Difference]: Finished difference Result 17338 states and 25230 transitions. [2021-11-20 06:42:30,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:42:30,796 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 96 [2021-11-20 06:42:30,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:42:30,833 INFO L225 Difference]: With dead ends: 17338 [2021-11-20 06:42:30,833 INFO L226 Difference]: Without dead ends: 8687 [2021-11-20 06:42:30,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-20 06:42:30,855 INFO L933 BasicCegarLoop]: 545 mSDtfsCounter, 0 mSDsluCounter, 1629 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2174 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:42:30,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2174 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:42:30,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8687 states. [2021-11-20 06:42:31,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8687 to 8687. [2021-11-20 06:42:31,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8687 states, 6242 states have (on average 1.2997436719000321) internal successors, (8113), 6321 states have internal predecessors, (8113), 2036 states have call successors, (2036), 373 states have call predecessors, (2036), 408 states have return successors, (2346), 2052 states have call predecessors, (2346), 2032 states have call successors, (2346) [2021-11-20 06:42:31,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8687 states to 8687 states and 12495 transitions. [2021-11-20 06:42:31,575 INFO L78 Accepts]: Start accepts. Automaton has 8687 states and 12495 transitions. Word has length 96 [2021-11-20 06:42:31,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:42:31,576 INFO L470 AbstractCegarLoop]: Abstraction has 8687 states and 12495 transitions. [2021-11-20 06:42:31,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-20 06:42:31,576 INFO L276 IsEmpty]: Start isEmpty. Operand 8687 states and 12495 transitions. [2021-11-20 06:42:31,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-20 06:42:31,580 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:42:31,581 INFO L514 BasicCegarLoop]: trace histogram [4, 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] [2021-11-20 06:42:31,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:31,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:42:31,802 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:42:31,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:31,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1398514888, now seen corresponding path program 1 times [2021-11-20 06:42:31,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:42:31,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [811225590] [2021-11-20 06:42:31,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:31,803 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:42:31,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:42:31,804 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:42:31,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-20 06:42:32,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:32,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 06:42:32,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:32,703 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-20 06:42:32,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:42:33,101 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-20 06:42:33,102 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:42:33,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [811225590] [2021-11-20 06:42:33,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [811225590] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:42:33,102 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:42:33,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-20 06:42:33,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228431498] [2021-11-20 06:42:33,103 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:42:33,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:42:33,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:42:33,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:42:33,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:42:33,104 INFO L87 Difference]: Start difference. First operand 8687 states and 12495 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 06:42:34,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:42:34,425 INFO L93 Difference]: Finished difference Result 21581 states and 31583 transitions. [2021-11-20 06:42:34,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:42:34,434 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 98 [2021-11-20 06:42:34,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:42:34,521 INFO L225 Difference]: With dead ends: 21581 [2021-11-20 06:42:34,521 INFO L226 Difference]: Without dead ends: 12906 [2021-11-20 06:42:34,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:42:34,543 INFO L933 BasicCegarLoop]: 760 mSDtfsCounter, 173 mSDsluCounter, 2094 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 2854 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:42:34,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 2854 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 06:42:34,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12906 states. [2021-11-20 06:42:35,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12906 to 8403. [2021-11-20 06:42:35,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8403 states, 6102 states have (on average 1.297115699770567) internal successors, (7915), 6133 states have internal predecessors, (7915), 1912 states have call successors, (1912), 353 states have call predecessors, (1912), 388 states have return successors, (2200), 1976 states have call predecessors, (2200), 1908 states have call successors, (2200) [2021-11-20 06:42:35,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8403 states to 8403 states and 12027 transitions. [2021-11-20 06:42:35,398 INFO L78 Accepts]: Start accepts. Automaton has 8403 states and 12027 transitions. Word has length 98 [2021-11-20 06:42:35,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:42:35,398 INFO L470 AbstractCegarLoop]: Abstraction has 8403 states and 12027 transitions. [2021-11-20 06:42:35,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 06:42:35,399 INFO L276 IsEmpty]: Start isEmpty. Operand 8403 states and 12027 transitions. [2021-11-20 06:42:35,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-20 06:42:35,403 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:42:35,403 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:42:35,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:35,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:42:35,619 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:42:35,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:35,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1871827029, now seen corresponding path program 1 times [2021-11-20 06:42:35,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:42:35,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1368829100] [2021-11-20 06:42:35,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:35,620 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:42:35,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:42:35,647 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:42:35,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-20 06:42:36,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:36,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 06:42:36,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:36,729 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 06:42:36,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:42:37,106 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 06:42:37,106 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:42:37,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1368829100] [2021-11-20 06:42:37,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1368829100] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:42:37,107 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:42:37,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-20 06:42:37,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405670544] [2021-11-20 06:42:37,107 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:42:37,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:42:37,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:42:37,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:42:37,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:42:37,108 INFO L87 Difference]: Start difference. First operand 8403 states and 12027 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-20 06:42:37,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:42:37,974 INFO L93 Difference]: Finished difference Result 20855 states and 30577 transitions. [2021-11-20 06:42:37,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:42:37,975 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 87 [2021-11-20 06:42:37,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:42:38,030 INFO L225 Difference]: With dead ends: 20855 [2021-11-20 06:42:38,030 INFO L226 Difference]: Without dead ends: 12464 [2021-11-20 06:42:38,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:42:38,053 INFO L933 BasicCegarLoop]: 824 mSDtfsCounter, 168 mSDsluCounter, 2242 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 3066 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:42:38,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 3066 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:42:38,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12464 states. [2021-11-20 06:42:38,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12464 to 7853. [2021-11-20 06:42:38,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7853 states, 5720 states have (on average 1.2917832167832168) internal successors, (7389), 5713 states have internal predecessors, (7389), 1744 states have call successors, (1744), 349 states have call predecessors, (1744), 388 states have return successors, (2044), 1838 states have call predecessors, (2044), 1740 states have call successors, (2044) [2021-11-20 06:42:38,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7853 states to 7853 states and 11177 transitions. [2021-11-20 06:42:38,893 INFO L78 Accepts]: Start accepts. Automaton has 7853 states and 11177 transitions. Word has length 87 [2021-11-20 06:42:38,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:42:38,894 INFO L470 AbstractCegarLoop]: Abstraction has 7853 states and 11177 transitions. [2021-11-20 06:42:38,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-20 06:42:38,894 INFO L276 IsEmpty]: Start isEmpty. Operand 7853 states and 11177 transitions. [2021-11-20 06:42:38,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-20 06:42:38,898 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:42:38,898 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:42:38,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:39,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:42:39,122 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:42:39,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:39,123 INFO L85 PathProgramCache]: Analyzing trace with hash -205382314, now seen corresponding path program 1 times [2021-11-20 06:42:39,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:42:39,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1225452374] [2021-11-20 06:42:39,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:39,124 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:42:39,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:42:39,125 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:42:39,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-20 06:42:39,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:39,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-20 06:42:39,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:40,231 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:42:40,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:42:41,261 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:42:41,262 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:42:41,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1225452374] [2021-11-20 06:42:41,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1225452374] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:42:41,262 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:42:41,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-20 06:42:41,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005872388] [2021-11-20 06:42:41,262 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:42:41,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:42:41,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:42:41,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:42:41,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:42:41,263 INFO L87 Difference]: Start difference. First operand 7853 states and 11177 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-20 06:42:41,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:42:41,682 INFO L93 Difference]: Finished difference Result 12116 states and 17323 transitions. [2021-11-20 06:42:41,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:42:41,683 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 2 states have call successors, (10) Word has length 87 [2021-11-20 06:42:41,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:42:41,711 INFO L225 Difference]: With dead ends: 12116 [2021-11-20 06:42:41,711 INFO L226 Difference]: Without dead ends: 7869 [2021-11-20 06:42:41,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:42:41,724 INFO L933 BasicCegarLoop]: 543 mSDtfsCounter, 2 mSDsluCounter, 2711 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3254 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:42:41,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 3254 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:42:41,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7869 states. [2021-11-20 06:42:42,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7869 to 7869. [2021-11-20 06:42:42,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7869 states, 5736 states have (on average 1.2909693165969316) internal successors, (7405), 5721 states have internal predecessors, (7405), 1744 states have call successors, (1744), 349 states have call predecessors, (1744), 388 states have return successors, (2044), 1846 states have call predecessors, (2044), 1740 states have call successors, (2044) [2021-11-20 06:42:42,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7869 states to 7869 states and 11193 transitions. [2021-11-20 06:42:42,440 INFO L78 Accepts]: Start accepts. Automaton has 7869 states and 11193 transitions. Word has length 87 [2021-11-20 06:42:42,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:42:42,440 INFO L470 AbstractCegarLoop]: Abstraction has 7869 states and 11193 transitions. [2021-11-20 06:42:42,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-20 06:42:42,440 INFO L276 IsEmpty]: Start isEmpty. Operand 7869 states and 11193 transitions. [2021-11-20 06:42:42,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-20 06:42:42,444 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:42:42,444 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:42:42,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:42,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:42:42,659 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:42:42,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:42,659 INFO L85 PathProgramCache]: Analyzing trace with hash 2079481141, now seen corresponding path program 1 times [2021-11-20 06:42:42,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:42:42,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1260303667] [2021-11-20 06:42:42,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:42,660 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:42:42,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:42:42,661 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:42:42,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-20 06:42:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:43,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 06:42:43,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:43,355 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 06:42:43,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:42:43,554 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 06:42:43,554 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:42:43,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1260303667] [2021-11-20 06:42:43,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1260303667] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:42:43,554 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:42:43,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-20 06:42:43,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175528345] [2021-11-20 06:42:43,555 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:42:43,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:42:43,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:42:43,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:42:43,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:42:43,555 INFO L87 Difference]: Start difference. First operand 7869 states and 11193 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-20 06:42:44,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:42:44,990 INFO L93 Difference]: Finished difference Result 17674 states and 26093 transitions. [2021-11-20 06:42:44,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:42:44,990 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 87 [2021-11-20 06:42:44,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:42:45,050 INFO L225 Difference]: With dead ends: 17674 [2021-11-20 06:42:45,050 INFO L226 Difference]: Without dead ends: 13419 [2021-11-20 06:42:45,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:42:45,066 INFO L933 BasicCegarLoop]: 931 mSDtfsCounter, 580 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 1723 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 06:42:45,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [716 Valid, 1723 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 06:42:45,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13419 states. [2021-11-20 06:42:45,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13419 to 7941. [2021-11-20 06:42:46,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7941 states, 5808 states have (on average 1.2894283746556474) internal successors, (7489), 5793 states have internal predecessors, (7489), 1744 states have call successors, (1744), 349 states have call predecessors, (1744), 388 states have return successors, (2044), 1846 states have call predecessors, (2044), 1740 states have call successors, (2044) [2021-11-20 06:42:46,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7941 states to 7941 states and 11277 transitions. [2021-11-20 06:42:46,026 INFO L78 Accepts]: Start accepts. Automaton has 7941 states and 11277 transitions. Word has length 87 [2021-11-20 06:42:46,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:42:46,027 INFO L470 AbstractCegarLoop]: Abstraction has 7941 states and 11277 transitions. [2021-11-20 06:42:46,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-20 06:42:46,027 INFO L276 IsEmpty]: Start isEmpty. Operand 7941 states and 11277 transitions. [2021-11-20 06:42:46,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-20 06:42:46,031 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:42:46,032 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:42:46,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:46,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:42:46,252 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:42:46,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:46,252 INFO L85 PathProgramCache]: Analyzing trace with hash 390816807, now seen corresponding path program 1 times [2021-11-20 06:42:46,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:42:46,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2074921802] [2021-11-20 06:42:46,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:46,254 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:42:46,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:42:46,255 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:42:46,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-20 06:42:46,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:46,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 06:42:46,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:47,104 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:42:47,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:42:47,421 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-20 06:42:47,421 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:42:47,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2074921802] [2021-11-20 06:42:47,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2074921802] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:42:47,422 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:42:47,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-20 06:42:47,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905289347] [2021-11-20 06:42:47,422 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:42:47,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:42:47,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:42:47,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:42:47,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:42:47,424 INFO L87 Difference]: Start difference. First operand 7941 states and 11277 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-11-20 06:42:48,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:42:48,155 INFO L93 Difference]: Finished difference Result 15994 states and 22677 transitions. [2021-11-20 06:42:48,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:42:48,156 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 94 [2021-11-20 06:42:48,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:42:48,185 INFO L225 Difference]: With dead ends: 15994 [2021-11-20 06:42:48,185 INFO L226 Difference]: Without dead ends: 8059 [2021-11-20 06:42:48,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:42:48,204 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 45 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:42:48,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 1659 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:42:48,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8059 states. [2021-11-20 06:42:48,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8059 to 7959. [2021-11-20 06:42:48,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7959 states, 5820 states have (on average 1.288659793814433) internal successors, (7500), 5805 states have internal predecessors, (7500), 1747 states have call successors, (1747), 352 states have call predecessors, (1747), 391 states have return successors, (2047), 1849 states have call predecessors, (2047), 1743 states have call successors, (2047) [2021-11-20 06:42:48,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7959 states to 7959 states and 11294 transitions. [2021-11-20 06:42:48,972 INFO L78 Accepts]: Start accepts. Automaton has 7959 states and 11294 transitions. Word has length 94 [2021-11-20 06:42:48,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:42:48,973 INFO L470 AbstractCegarLoop]: Abstraction has 7959 states and 11294 transitions. [2021-11-20 06:42:48,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-11-20 06:42:48,973 INFO L276 IsEmpty]: Start isEmpty. Operand 7959 states and 11294 transitions. [2021-11-20 06:42:48,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-20 06:42:48,976 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:42:48,976 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:42:49,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:49,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:42:49,199 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:42:49,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:49,199 INFO L85 PathProgramCache]: Analyzing trace with hash -153386871, now seen corresponding path program 1 times [2021-11-20 06:42:49,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:42:49,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [752206737] [2021-11-20 06:42:49,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:49,200 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:42:49,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:42:49,201 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:42:49,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-20 06:42:49,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:49,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 692 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-20 06:42:49,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:50,449 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-20 06:42:50,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:42:51,243 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-20 06:42:51,244 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:42:51,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [752206737] [2021-11-20 06:42:51,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [752206737] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:42:51,244 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:42:51,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 10 [2021-11-20 06:42:51,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349436785] [2021-11-20 06:42:51,246 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:42:51,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:42:51,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:42:51,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:42:51,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:42:51,255 INFO L87 Difference]: Start difference. First operand 7959 states and 11294 transitions. Second operand has 10 states, 10 states have (on average 7.7) internal successors, (77), 7 states have internal predecessors, (77), 2 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (14), 5 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-20 06:42:52,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:42:52,795 INFO L93 Difference]: Finished difference Result 21204 states and 30830 transitions. [2021-11-20 06:42:52,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 06:42:52,796 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 7 states have internal predecessors, (77), 2 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (14), 5 states have call predecessors, (14), 2 states have call successors, (14) Word has length 96 [2021-11-20 06:42:52,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:42:52,832 INFO L225 Difference]: With dead ends: 21204 [2021-11-20 06:42:52,832 INFO L226 Difference]: Without dead ends: 13257 [2021-11-20 06:42:52,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:42:52,852 INFO L933 BasicCegarLoop]: 817 mSDtfsCounter, 228 mSDsluCounter, 6271 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 7088 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 06:42:52,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 7088 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 06:42:52,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13257 states. [2021-11-20 06:42:53,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13257 to 7959. [2021-11-20 06:42:53,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7959 states, 5820 states have (on average 1.284536082474227) internal successors, (7476), 5805 states have internal predecessors, (7476), 1747 states have call successors, (1747), 352 states have call predecessors, (1747), 391 states have return successors, (2047), 1849 states have call predecessors, (2047), 1743 states have call successors, (2047) [2021-11-20 06:42:53,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7959 states to 7959 states and 11270 transitions. [2021-11-20 06:42:53,501 INFO L78 Accepts]: Start accepts. Automaton has 7959 states and 11270 transitions. Word has length 96 [2021-11-20 06:42:53,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:42:53,502 INFO L470 AbstractCegarLoop]: Abstraction has 7959 states and 11270 transitions. [2021-11-20 06:42:53,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 7 states have internal predecessors, (77), 2 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (14), 5 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-20 06:42:53,502 INFO L276 IsEmpty]: Start isEmpty. Operand 7959 states and 11270 transitions. [2021-11-20 06:42:53,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-20 06:42:53,505 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:42:53,506 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:42:53,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:53,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:42:53,726 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:42:53,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:53,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1118734186, now seen corresponding path program 1 times [2021-11-20 06:42:53,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:42:53,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1680254978] [2021-11-20 06:42:53,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:53,728 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:42:53,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:42:53,728 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:42:53,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-20 06:42:54,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:54,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 06:42:54,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:55,108 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:55,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:42:56,032 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 06:42:56,033 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:42:56,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1680254978] [2021-11-20 06:42:56,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1680254978] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 06:42:56,033 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:42:56,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2021-11-20 06:42:56,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848630602] [2021-11-20 06:42:56,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:42:56,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:42:56,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:42:56,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:42:56,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:42:56,034 INFO L87 Difference]: Start difference. First operand 7959 states and 11270 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 5 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-20 06:42:58,291 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:43:01,141 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:43:02,831 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:43:05,569 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:43:08,940 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:43:11,286 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:43:13,299 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:43:17,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:43:17,640 INFO L93 Difference]: Finished difference Result 16077 states and 22852 transitions. [2021-11-20 06:43:17,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 06:43:17,641 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 5 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 89 [2021-11-20 06:43:17,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:43:17,681 INFO L225 Difference]: With dead ends: 16077 [2021-11-20 06:43:17,681 INFO L226 Difference]: Without dead ends: 16074 [2021-11-20 06:43:17,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-11-20 06:43:17,687 INFO L933 BasicCegarLoop]: 1038 mSDtfsCounter, 1512 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 1032 mSolverCounterSat, 388 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1589 SdHoareTripleChecker+Valid, 1802 SdHoareTripleChecker+Invalid, 1426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 1032 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:43:17,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1589 Valid, 1802 Invalid, 1426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 1032 Invalid, 6 Unknown, 0 Unchecked, 20.4s Time] [2021-11-20 06:43:17,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16074 states. [2021-11-20 06:43:19,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16074 to 15965. [2021-11-20 06:43:19,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15965 states, 11654 states have (on average 1.2857388021280247) internal successors, (14984), 11603 states have internal predecessors, (14984), 3531 states have call successors, (3531), 700 states have call predecessors, (3531), 779 states have return successors, (4219), 3769 states have call predecessors, (4219), 3527 states have call successors, (4219) [2021-11-20 06:43:19,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15965 states to 15965 states and 22734 transitions. [2021-11-20 06:43:19,074 INFO L78 Accepts]: Start accepts. Automaton has 15965 states and 22734 transitions. Word has length 89 [2021-11-20 06:43:19,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:43:19,075 INFO L470 AbstractCegarLoop]: Abstraction has 15965 states and 22734 transitions. [2021-11-20 06:43:19,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 5 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-20 06:43:19,075 INFO L276 IsEmpty]: Start isEmpty. Operand 15965 states and 22734 transitions. [2021-11-20 06:43:19,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-20 06:43:19,077 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:43:19,077 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:43:19,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-20 06:43:19,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:43:19,291 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:43:19,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:43:19,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1748979270, now seen corresponding path program 1 times [2021-11-20 06:43:19,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:43:19,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [966414019] [2021-11-20 06:43:19,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:43:19,292 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:43:19,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:43:19,293 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:43:19,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-20 06:43:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:43:19,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-20 06:43:19,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:43:20,950 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:43:20,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:43:22,256 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:43:22,256 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:43:22,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [966414019] [2021-11-20 06:43:22,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [966414019] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:43:22,257 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:43:22,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-11-20 06:43:22,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880312357] [2021-11-20 06:43:22,257 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:43:22,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 06:43:22,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:43:22,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 06:43:22,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-11-20 06:43:22,258 INFO L87 Difference]: Start difference. First operand 15965 states and 22734 transitions. Second operand has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 10 states have internal predecessors, (79), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (13), 6 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-20 06:43:25,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:43:25,393 INFO L93 Difference]: Finished difference Result 40990 states and 59964 transitions. [2021-11-20 06:43:25,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 06:43:25,393 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 10 states have internal predecessors, (79), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (13), 6 states have call predecessors, (13), 3 states have call successors, (13) Word has length 94 [2021-11-20 06:43:25,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:43:25,492 INFO L225 Difference]: With dead ends: 40990 [2021-11-20 06:43:25,492 INFO L226 Difference]: Without dead ends: 25037 [2021-11-20 06:43:25,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-11-20 06:43:25,537 INFO L933 BasicCegarLoop]: 820 mSDtfsCounter, 228 mSDsluCounter, 7070 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 7890 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:43:25,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 7890 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 06:43:25,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25037 states. [2021-11-20 06:43:27,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25037 to 15929. [2021-11-20 06:43:27,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15929 states, 11618 states have (on average 1.286624203821656) internal successors, (14948), 11603 states have internal predecessors, (14948), 3531 states have call successors, (3531), 700 states have call predecessors, (3531), 779 states have return successors, (4135), 3685 states have call predecessors, (4135), 3527 states have call successors, (4135) [2021-11-20 06:43:27,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15929 states to 15929 states and 22614 transitions. [2021-11-20 06:43:27,245 INFO L78 Accepts]: Start accepts. Automaton has 15929 states and 22614 transitions. Word has length 94 [2021-11-20 06:43:27,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:43:27,246 INFO L470 AbstractCegarLoop]: Abstraction has 15929 states and 22614 transitions. [2021-11-20 06:43:27,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 10 states have internal predecessors, (79), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (13), 6 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-20 06:43:27,246 INFO L276 IsEmpty]: Start isEmpty. Operand 15929 states and 22614 transitions. [2021-11-20 06:43:27,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-20 06:43:27,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:43:27,248 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:43:27,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-20 06:43:27,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:43:27,468 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:43:27,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:43:27,468 INFO L85 PathProgramCache]: Analyzing trace with hash 832679025, now seen corresponding path program 1 times [2021-11-20 06:43:27,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:43:27,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [364558545] [2021-11-20 06:43:27,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:43:27,469 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:43:27,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:43:27,470 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:43:27,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-20 06:43:27,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:43:27,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 06:43:27,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:43:28,570 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:43:28,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:43:29,378 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:43:29,379 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:43:29,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [364558545] [2021-11-20 06:43:29,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [364558545] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:43:29,379 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:43:29,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 10 [2021-11-20 06:43:29,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320500001] [2021-11-20 06:43:29,379 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:43:29,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:43:29,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:43:29,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:43:29,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:43:29,380 INFO L87 Difference]: Start difference. First operand 15929 states and 22614 transitions. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 7 states have internal predecessors, (85), 2 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-20 06:43:31,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:43:31,740 INFO L93 Difference]: Finished difference Result 38656 states and 56233 transitions. [2021-11-20 06:43:31,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 06:43:31,740 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 7 states have internal predecessors, (85), 2 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 2 states have call successors, (14) Word has length 97 [2021-11-20 06:43:31,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:43:31,817 INFO L225 Difference]: With dead ends: 38656 [2021-11-20 06:43:31,817 INFO L226 Difference]: Without dead ends: 22739 [2021-11-20 06:43:31,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:43:31,854 INFO L933 BasicCegarLoop]: 835 mSDtfsCounter, 213 mSDsluCounter, 6376 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 7211 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 06:43:31,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 7211 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 06:43:31,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22739 states. [2021-11-20 06:43:33,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22739 to 15913. [2021-11-20 06:43:33,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15913 states, 11602 states have (on average 1.2835717979658678) internal successors, (14892), 11595 states have internal predecessors, (14892), 3531 states have call successors, (3531), 700 states have call predecessors, (3531), 779 states have return successors, (4135), 3677 states have call predecessors, (4135), 3527 states have call successors, (4135) [2021-11-20 06:43:33,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15913 states to 15913 states and 22558 transitions. [2021-11-20 06:43:33,312 INFO L78 Accepts]: Start accepts. Automaton has 15913 states and 22558 transitions. Word has length 97 [2021-11-20 06:43:33,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:43:33,312 INFO L470 AbstractCegarLoop]: Abstraction has 15913 states and 22558 transitions. [2021-11-20 06:43:33,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 7 states have internal predecessors, (85), 2 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-20 06:43:33,313 INFO L276 IsEmpty]: Start isEmpty. Operand 15913 states and 22558 transitions. [2021-11-20 06:43:33,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-20 06:43:33,315 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:43:33,315 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:43:33,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-20 06:43:33,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:43:33,527 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:43:33,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:43:33,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1118058599, now seen corresponding path program 1 times [2021-11-20 06:43:33,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:43:33,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456271143] [2021-11-20 06:43:33,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:43:33,528 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:43:33,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:43:33,529 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:43:33,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-20 06:43:33,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:43:33,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 06:43:33,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:43:34,662 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-20 06:43:34,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:43:35,109 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 06:43:35,110 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:43:35,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456271143] [2021-11-20 06:43:35,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [456271143] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 06:43:35,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:43:35,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2021-11-20 06:43:35,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388982249] [2021-11-20 06:43:35,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:43:35,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:43:35,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:43:35,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:43:35,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:43:35,111 INFO L87 Difference]: Start difference. First operand 15913 states and 22558 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-20 06:43:37,258 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:43:39,794 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:43:40,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:43:40,289 INFO L93 Difference]: Finished difference Result 31919 states and 45243 transitions. [2021-11-20 06:43:40,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:43:40,289 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2021-11-20 06:43:40,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:43:40,328 INFO L225 Difference]: With dead ends: 31919 [2021-11-20 06:43:40,328 INFO L226 Difference]: Without dead ends: 16015 [2021-11-20 06:43:40,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:43:40,355 INFO L933 BasicCegarLoop]: 560 mSDtfsCounter, 17 mSDsluCounter, 2214 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 2774 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:43:40,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 2774 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 2 Unknown, 0 Unchecked, 4.2s Time] [2021-11-20 06:43:40,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16015 states. [2021-11-20 06:43:41,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16015 to 15922. [2021-11-20 06:43:41,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15922 states, 11611 states have (on average 1.2833519937989837) internal successors, (14901), 11601 states have internal predecessors, (14901), 3531 states have call successors, (3531), 700 states have call predecessors, (3531), 779 states have return successors, (4134), 3680 states have call predecessors, (4134), 3527 states have call successors, (4134) [2021-11-20 06:43:41,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15922 states to 15922 states and 22566 transitions. [2021-11-20 06:43:41,660 INFO L78 Accepts]: Start accepts. Automaton has 15922 states and 22566 transitions. Word has length 108 [2021-11-20 06:43:41,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:43:41,660 INFO L470 AbstractCegarLoop]: Abstraction has 15922 states and 22566 transitions. [2021-11-20 06:43:41,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-20 06:43:41,661 INFO L276 IsEmpty]: Start isEmpty. Operand 15922 states and 22566 transitions. [2021-11-20 06:43:41,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-20 06:43:41,663 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:43:41,663 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:43:41,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-20 06:43:41,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:43:41,863 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:43:41,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:43:41,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1967666458, now seen corresponding path program 1 times [2021-11-20 06:43:41,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:43:41,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [894794974] [2021-11-20 06:43:41,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:43:41,865 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:43:41,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:43:41,865 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:43:41,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-20 06:43:42,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:43:42,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 06:43:42,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:43:42,651 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-20 06:43:42,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:43:42,884 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-20 06:43:42,885 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:43:42,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [894794974] [2021-11-20 06:43:42,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [894794974] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:43:42,885 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:43:42,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-20 06:43:42,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736895055] [2021-11-20 06:43:42,885 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:43:42,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:43:42,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:43:42,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:43:42,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:43:42,886 INFO L87 Difference]: Start difference. First operand 15922 states and 22566 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-20 06:43:44,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:43:44,022 INFO L93 Difference]: Finished difference Result 31952 states and 45288 transitions. [2021-11-20 06:43:44,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:43:44,023 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 108 [2021-11-20 06:43:44,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:43:44,068 INFO L225 Difference]: With dead ends: 31952 [2021-11-20 06:43:44,068 INFO L226 Difference]: Without dead ends: 16042 [2021-11-20 06:43:44,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:43:44,089 INFO L933 BasicCegarLoop]: 544 mSDtfsCounter, 2 mSDsluCounter, 1082 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:43:44,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1626 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:43:44,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16042 states. [2021-11-20 06:43:45,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16042 to 16042. [2021-11-20 06:43:45,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16042 states, 11731 states have (on average 1.2804534992754242) internal successors, (15021), 11721 states have internal predecessors, (15021), 3531 states have call successors, (3531), 700 states have call predecessors, (3531), 779 states have return successors, (4134), 3680 states have call predecessors, (4134), 3527 states have call successors, (4134) [2021-11-20 06:43:45,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16042 states to 16042 states and 22686 transitions. [2021-11-20 06:43:45,220 INFO L78 Accepts]: Start accepts. Automaton has 16042 states and 22686 transitions. Word has length 108 [2021-11-20 06:43:45,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:43:45,221 INFO L470 AbstractCegarLoop]: Abstraction has 16042 states and 22686 transitions. [2021-11-20 06:43:45,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-20 06:43:45,221 INFO L276 IsEmpty]: Start isEmpty. Operand 16042 states and 22686 transitions. [2021-11-20 06:43:45,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-20 06:43:45,223 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:43:45,223 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:43:45,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-20 06:43:45,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:43:45,423 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:43:45,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:43:45,424 INFO L85 PathProgramCache]: Analyzing trace with hash -2053204873, now seen corresponding path program 1 times [2021-11-20 06:43:45,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:43:45,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1639176677] [2021-11-20 06:43:45,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:43:45,426 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:43:45,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:43:45,427 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:43:45,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-20 06:43:45,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:43:45,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-20 06:43:45,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:43:47,017 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:43:47,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:43:48,353 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:43:48,354 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:43:48,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1639176677] [2021-11-20 06:43:48,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1639176677] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:43:48,354 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:43:48,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 13 [2021-11-20 06:43:48,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99960497] [2021-11-20 06:43:48,354 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:43:48,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 06:43:48,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:43:48,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 06:43:48,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-11-20 06:43:48,356 INFO L87 Difference]: Start difference. First operand 16042 states and 22686 transitions. Second operand has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 10 states have internal predecessors, (87), 3 states have call successors, (12), 2 states have call predecessors, (12), 6 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-20 06:43:51,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:43:51,398 INFO L93 Difference]: Finished difference Result 35173 states and 51001 transitions. [2021-11-20 06:43:51,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 06:43:51,399 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 10 states have internal predecessors, (87), 3 states have call successors, (12), 2 states have call predecessors, (12), 6 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) Word has length 104 [2021-11-20 06:43:51,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:43:51,453 INFO L225 Difference]: With dead ends: 35173 [2021-11-20 06:43:51,453 INFO L226 Difference]: Without dead ends: 22767 [2021-11-20 06:43:51,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-11-20 06:43:51,478 INFO L933 BasicCegarLoop]: 827 mSDtfsCounter, 209 mSDsluCounter, 8771 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 9598 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:43:51,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 9598 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-20 06:43:51,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22767 states. [2021-11-20 06:43:52,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22767 to 15882. [2021-11-20 06:43:52,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15882 states, 11647 states have (on average 1.2804155576543317) internal successors, (14913), 11665 states have internal predecessors, (14913), 3459 states have call successors, (3459), 692 states have call predecessors, (3459), 775 states have return successors, (4026), 3584 states have call predecessors, (4026), 3455 states have call successors, (4026) [2021-11-20 06:43:52,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15882 states to 15882 states and 22398 transitions. [2021-11-20 06:43:52,770 INFO L78 Accepts]: Start accepts. Automaton has 15882 states and 22398 transitions. Word has length 104 [2021-11-20 06:43:52,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:43:52,770 INFO L470 AbstractCegarLoop]: Abstraction has 15882 states and 22398 transitions. [2021-11-20 06:43:52,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 10 states have internal predecessors, (87), 3 states have call successors, (12), 2 states have call predecessors, (12), 6 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-20 06:43:52,771 INFO L276 IsEmpty]: Start isEmpty. Operand 15882 states and 22398 transitions. [2021-11-20 06:43:52,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-20 06:43:52,773 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:43:52,773 INFO L514 BasicCegarLoop]: trace histogram [4, 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] [2021-11-20 06:43:52,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-20 06:43:52,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:43:52,974 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:43:52,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:43:52,974 INFO L85 PathProgramCache]: Analyzing trace with hash -645931029, now seen corresponding path program 1 times [2021-11-20 06:43:52,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:43:52,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [730966468] [2021-11-20 06:43:52,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:43:52,975 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:43:52,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:43:52,976 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:43:52,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-20 06:43:53,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:43:53,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 832 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 06:43:53,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:43:54,013 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-20 06:43:54,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:43:54,468 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-20 06:43:54,468 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:43:54,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [730966468] [2021-11-20 06:43:54,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [730966468] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:43:54,468 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:43:54,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-20 06:43:54,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818438696] [2021-11-20 06:43:54,468 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:43:54,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:43:54,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:43:54,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:43:54,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:43:54,469 INFO L87 Difference]: Start difference. First operand 15882 states and 22398 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-20 06:43:56,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:43:56,552 INFO L93 Difference]: Finished difference Result 39374 states and 56521 transitions. [2021-11-20 06:43:56,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:43:56,560 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 124 [2021-11-20 06:43:56,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:43:56,615 INFO L225 Difference]: With dead ends: 39374 [2021-11-20 06:43:56,615 INFO L226 Difference]: Without dead ends: 23504 [2021-11-20 06:43:56,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:43:56,643 INFO L933 BasicCegarLoop]: 750 mSDtfsCounter, 177 mSDsluCounter, 2067 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 2817 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:43:56,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 2817 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 06:43:56,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23504 states. [2021-11-20 06:43:58,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23504 to 15401. [2021-11-20 06:43:58,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15401 states, 11390 states have (on average 1.2797190517998245) internal successors, (14576), 11384 states have internal predecessors, (14576), 3267 states have call successors, (3267), 660 states have call predecessors, (3267), 743 states have return successors, (3798), 3416 states have call predecessors, (3798), 3263 states have call successors, (3798) [2021-11-20 06:43:58,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15401 states to 15401 states and 21641 transitions. [2021-11-20 06:43:58,159 INFO L78 Accepts]: Start accepts. Automaton has 15401 states and 21641 transitions. Word has length 124 [2021-11-20 06:43:58,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:43:58,159 INFO L470 AbstractCegarLoop]: Abstraction has 15401 states and 21641 transitions. [2021-11-20 06:43:58,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-20 06:43:58,160 INFO L276 IsEmpty]: Start isEmpty. Operand 15401 states and 21641 transitions. [2021-11-20 06:43:58,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-20 06:43:58,162 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:43:58,162 INFO L514 BasicCegarLoop]: trace histogram [4, 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] [2021-11-20 06:43:58,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-20 06:43:58,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:43:58,363 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:43:58,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:43:58,363 INFO L85 PathProgramCache]: Analyzing trace with hash -756764579, now seen corresponding path program 1 times [2021-11-20 06:43:58,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:43:58,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1080329286] [2021-11-20 06:43:58,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:43:58,365 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:43:58,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:43:58,365 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:43:58,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-20 06:43:58,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:43:58,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 06:43:58,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:43:59,594 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-20 06:43:59,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:44:00,468 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-20 06:44:00,468 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:44:00,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1080329286] [2021-11-20 06:44:00,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1080329286] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:44:00,469 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:44:00,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 10 [2021-11-20 06:44:00,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692208713] [2021-11-20 06:44:00,469 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:44:00,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:44:00,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:44:00,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:44:00,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:44:00,471 INFO L87 Difference]: Start difference. First operand 15401 states and 21641 transitions. Second operand has 10 states, 10 states have (on average 9.9) internal successors, (99), 7 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (19), 5 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-20 06:44:02,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:44:02,779 INFO L93 Difference]: Finished difference Result 35408 states and 50880 transitions. [2021-11-20 06:44:02,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 06:44:02,785 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 7 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (19), 5 states have call predecessors, (19), 2 states have call successors, (19) Word has length 122 [2021-11-20 06:44:02,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:44:02,838 INFO L225 Difference]: With dead ends: 35408 [2021-11-20 06:44:02,838 INFO L226 Difference]: Without dead ends: 23372 [2021-11-20 06:44:02,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:44:02,861 INFO L933 BasicCegarLoop]: 834 mSDtfsCounter, 224 mSDsluCounter, 6396 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 7230 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:44:02,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 7230 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 06:44:02,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23372 states. [2021-11-20 06:44:04,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23372 to 15401. [2021-11-20 06:44:04,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15401 states, 11390 states have (on average 1.2776119402985076) internal successors, (14552), 11384 states have internal predecessors, (14552), 3267 states have call successors, (3267), 660 states have call predecessors, (3267), 743 states have return successors, (3798), 3416 states have call predecessors, (3798), 3263 states have call successors, (3798) [2021-11-20 06:44:04,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15401 states to 15401 states and 21617 transitions. [2021-11-20 06:44:04,220 INFO L78 Accepts]: Start accepts. Automaton has 15401 states and 21617 transitions. Word has length 122 [2021-11-20 06:44:04,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:44:04,220 INFO L470 AbstractCegarLoop]: Abstraction has 15401 states and 21617 transitions. [2021-11-20 06:44:04,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 7 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (19), 5 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-20 06:44:04,221 INFO L276 IsEmpty]: Start isEmpty. Operand 15401 states and 21617 transitions. [2021-11-20 06:44:04,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-20 06:44:04,222 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:44:04,222 INFO L514 BasicCegarLoop]: trace histogram [4, 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] [2021-11-20 06:44:04,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-20 06:44:04,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:44:04,423 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:44:04,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:44:04,423 INFO L85 PathProgramCache]: Analyzing trace with hash -61836419, now seen corresponding path program 1 times [2021-11-20 06:44:04,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:44:04,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [161169732] [2021-11-20 06:44:04,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:44:04,424 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:44:04,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:44:04,425 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:44:04,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-20 06:44:04,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:44:04,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-20 06:44:04,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:44:05,867 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-20 06:44:05,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:44:07,202 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-20 06:44:07,203 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:44:07,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [161169732] [2021-11-20 06:44:07,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [161169732] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:44:07,203 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:44:07,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-11-20 06:44:07,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747406679] [2021-11-20 06:44:07,203 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:44:07,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 06:44:07,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:44:07,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 06:44:07,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-11-20 06:44:07,205 INFO L87 Difference]: Start difference. First operand 15401 states and 21617 transitions. Second operand has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 10 states have internal predecessors, (98), 3 states have call successors, (18), 2 states have call predecessors, (18), 6 states have return successors, (18), 6 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-20 06:44:10,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:44:10,980 INFO L93 Difference]: Finished difference Result 40249 states and 57876 transitions. [2021-11-20 06:44:10,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 06:44:10,981 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 10 states have internal predecessors, (98), 3 states have call successors, (18), 2 states have call predecessors, (18), 6 states have return successors, (18), 6 states have call predecessors, (18), 3 states have call successors, (18) Word has length 122 [2021-11-20 06:44:10,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:44:11,047 INFO L225 Difference]: With dead ends: 40249 [2021-11-20 06:44:11,047 INFO L226 Difference]: Without dead ends: 24860 [2021-11-20 06:44:11,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-11-20 06:44:11,069 INFO L933 BasicCegarLoop]: 779 mSDtfsCounter, 232 mSDsluCounter, 8292 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 9071 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-20 06:44:11,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 9071 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-20 06:44:11,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24860 states. [2021-11-20 06:44:12,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24860 to 15329. [2021-11-20 06:44:12,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15329 states, 11318 states have (on average 1.2793779819756141) internal successors, (14480), 11384 states have internal predecessors, (14480), 3267 states have call successors, (3267), 660 states have call predecessors, (3267), 743 states have return successors, (3726), 3344 states have call predecessors, (3726), 3263 states have call successors, (3726) [2021-11-20 06:44:12,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15329 states to 15329 states and 21473 transitions. [2021-11-20 06:44:12,303 INFO L78 Accepts]: Start accepts. Automaton has 15329 states and 21473 transitions. Word has length 122 [2021-11-20 06:44:12,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:44:12,304 INFO L470 AbstractCegarLoop]: Abstraction has 15329 states and 21473 transitions. [2021-11-20 06:44:12,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 10 states have internal predecessors, (98), 3 states have call successors, (18), 2 states have call predecessors, (18), 6 states have return successors, (18), 6 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-20 06:44:12,304 INFO L276 IsEmpty]: Start isEmpty. Operand 15329 states and 21473 transitions. [2021-11-20 06:44:12,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-20 06:44:12,306 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:44:12,306 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:44:12,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-20 06:44:12,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:44:12,511 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:44:12,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:44:12,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1117139730, now seen corresponding path program 1 times [2021-11-20 06:44:12,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:44:12,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1479086424] [2021-11-20 06:44:12,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:44:12,512 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:44:12,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:44:12,513 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:44:12,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-20 06:44:19,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:44:19,992 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:44:27,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:44:27,513 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-20 06:44:27,521 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 06:44:27,522 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 06:44:27,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-11-20 06:44:27,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:44:27,753 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:44:27,755 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 06:44:28,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 06:44:28 BoogieIcfgContainer [2021-11-20 06:44:28,016 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 06:44:28,017 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 06:44:28,017 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 06:44:28,017 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 06:44:28,018 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:40:54" (3/4) ... [2021-11-20 06:44:28,023 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 06:44:28,023 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 06:44:28,026 INFO L158 Benchmark]: Toolchain (without parser) took 230584.67ms. Allocated memory was 62.9MB in the beginning and 3.2GB in the end (delta: 3.1GB). Free memory was 33.9MB in the beginning and 1.3GB in the end (delta: -1.3GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. [2021-11-20 06:44:28,033 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 62.9MB. Free memory is still 44.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:44:28,034 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2595.05ms. Allocated memory was 62.9MB in the beginning and 178.3MB in the end (delta: 115.3MB). Free memory was 33.7MB in the beginning and 112.8MB in the end (delta: -79.1MB). Peak memory consumption was 71.6MB. Max. memory is 16.1GB. [2021-11-20 06:44:28,034 INFO L158 Benchmark]: Boogie Procedure Inliner took 187.95ms. Allocated memory is still 178.3MB. Free memory was 112.8MB in the beginning and 103.3MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 06:44:28,035 INFO L158 Benchmark]: Boogie Preprocessor took 204.46ms. Allocated memory is still 178.3MB. Free memory was 103.3MB in the beginning and 92.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 06:44:28,035 INFO L158 Benchmark]: RCFGBuilder took 14173.32ms. Allocated memory was 178.3MB in the beginning and 308.3MB in the end (delta: 130.0MB). Free memory was 91.8MB in the beginning and 114.7MB in the end (delta: -22.9MB). Peak memory consumption was 113.0MB. Max. memory is 16.1GB. [2021-11-20 06:44:28,037 INFO L158 Benchmark]: TraceAbstraction took 213410.11ms. Allocated memory was 308.3MB in the beginning and 3.2GB in the end (delta: 2.9GB). Free memory was 113.7MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. [2021-11-20 06:44:28,037 INFO L158 Benchmark]: Witness Printer took 6.16ms. Allocated memory is still 3.2GB. Free memory is still 1.3GB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:44:28,038 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 62.9MB. Free memory is still 44.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2595.05ms. Allocated memory was 62.9MB in the beginning and 178.3MB in the end (delta: 115.3MB). Free memory was 33.7MB in the beginning and 112.8MB in the end (delta: -79.1MB). Peak memory consumption was 71.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 187.95ms. Allocated memory is still 178.3MB. Free memory was 112.8MB in the beginning and 103.3MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 204.46ms. Allocated memory is still 178.3MB. Free memory was 103.3MB in the beginning and 92.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * RCFGBuilder took 14173.32ms. Allocated memory was 178.3MB in the beginning and 308.3MB in the end (delta: 130.0MB). Free memory was 91.8MB in the beginning and 114.7MB in the end (delta: -22.9MB). Peak memory consumption was 113.0MB. Max. memory is 16.1GB. * TraceAbstraction took 213410.11ms. Allocated memory was 308.3MB in the beginning and 3.2GB in the end (delta: 2.9GB). Free memory was 113.7MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. * Witness Printer took 6.16ms. Allocated memory is still 3.2GB. Free memory is still 1.3GB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 6754]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of large string literal at line 5143. Possible FailurePath: [L5149] static struct lock_class_key __key___7 ; [L5150] static struct lock_class_key __key___8 ; [L5290-L5303] static char const __mod_author31[46] __attribute__((__used__, __unused__, __section__(".modinfo"), __aligned__(1))) = { (char const )'a', (char const )'u', (char const )'t', (char const )'h', (char const )'o', (char const )'r', (char const )'=', (char const )'S', (char const )'e', (char const )'b', (char const )'a', (char const )'s', (char const )'t', (char const )'i', (char const )'a', (char const )'n', (char const )' ', (char const )'H', (char const )'a', (char const )'a', (char const )'s', (char const )' ', (char const )'<', (char const )'h', (char const )'a', (char const )'a', (char const )'s', (char const )'@', (char const )'e', (char const )'m', (char const )'s', (char const )'-', (char const )'w', (char const )'u', (char const )'e', (char const )'n', (char const )'s', (char const )'c', (char const )'h', (char const )'e', (char const )'.', (char const )'c', (char const )'o', (char const )'m', (char const )'>', (char const )'\000'}; [L5304-L5323] static char const __mod_description32[70] __attribute__((__used__, __unused__, __section__(".modinfo"), __aligned__(1))) = { (char const )'d', (char const )'e', (char const )'s', (char const )'c', (char const )'r', (char const )'i', (char const )'p', (char const )'t', (char const )'i', (char const )'o', (char const )'n', (char const )'=', (char const )'C', (char const )'A', (char const )'N', (char const )' ', (char const )'d', (char const )'r', (char const )'i', (char const )'v', (char const )'e', (char const )'r', (char const )' ', (char const )'f', (char const )'o', (char const )'r', (char const )' ', (char const )'E', (char const )'M', (char const )'S', (char const )' ', (char const )'D', (char const )'r', (char const )'.', (char const )' ', (char const )'T', (char const )'h', (char const )'o', (char const )'m', (char const )'a', (char const )'s', (char const )' ', (char const )'W', (char const )'u', (char const )'e', (char const )'n', (char const )'s', (char const )'c', (char const )'h', (char const )'e', (char const )' ', (char const )'C', (char const )'A', (char const )'N', (char const )'/', (char const )'U', (char const )'S', (char const )'B', (char const )' ', (char const )'i', (char const )'n', (char const )'t', (char const )'e', (char const )'r', (char const )'f', (char const )'a', (char const )'c', (char const )'e', (char const )'s', (char const )'\000'}; [L5324-L5329] static char const __mod_license33[15] __attribute__((__used__, __unused__, __section__(".modinfo"), __aligned__(1))) = { (char const )'l', (char const )'i', (char const )'c', (char const )'e', (char const )'n', (char const )'s', (char const )'e', (char const )'=', (char const )'G', (char const )'P', (char const )'L', (char const )' ', (char const )'v', (char const )'2', (char const )'\000'}; [L5330-L5332] static struct usb_device_id ems_usb_table[1] = { {(__u16 )3, (__u16 )4822, (__u16 )1092, (unsigned short)0, (unsigned short)0, (unsigned char)0, (unsigned char)0, (unsigned char)0, (unsigned char)0, (unsigned char)0, (unsigned char)0, 0UL}}; [L6247-L6287] static struct net_device_ops const ems_usb_netdev_ops = {(int (*)(struct net_device *dev ))0, (void (*)(struct net_device *dev ))0, & ems_usb_open, & ems_usb_close, & ems_usb_start_xmit, (u16 (*)(struct net_device *dev , struct sk_buff *skb ))0, (void (*)(struct net_device *dev , int flags ))0, (void (*)(struct net_device *dev ))0, (void (*)(struct net_device *dev ))0, (int (*)(struct net_device *dev , void *addr ))0, (int (*)(struct net_device *dev ))0, (int (*)(struct net_device *dev , struct ifreq *ifr , int cmd ))0, (int (*)(struct net_device *dev , struct ifmap *map ))0, (int (*)(struct net_device *dev , int new_mtu ))0, (int (*)(struct net_device *dev , struct neigh_parms * ))0, (void (*)(struct net_device *dev ))0, (struct rtnl_link_stats64 *(*)(struct net_device *dev , struct rtnl_link_stats64 *storage ))0, (struct net_device_stats *(*)(struct net_device *dev ))0, (void (*)(struct net_device *dev , struct vlan_group *grp ))0, (void (*)(struct net_device *dev , unsigned short vid ))0, (void (*)(struct net_device *dev , unsigned short vid ))0, (void (*)(struct net_device *dev ))0, (int (*)(struct net_device *dev , struct netpoll_info *info ))0, (void (*)(struct net_device *dev ))0, (int (*)(struct net_device *dev , int queue , u8 *mac ))0, (int (*)(struct net_device *dev , int queue , u16 vlan , u8 qos ))0, (int (*)(struct net_device *dev , int vf , int rate ))0, (int (*)(struct net_device *dev , int vf , struct ifla_vf_info *ivf ))0, (int (*)(struct net_device *dev , int vf , struct nlattr **port ))0, (int (*)(struct net_device *dev , int vf , struct sk_buff *skb ))0, (int (*)(struct net_device *dev , u8 tc ))0, (int (*)(struct net_device *dev ))0, (int (*)(struct net_device *dev ))0, (int (*)(struct net_device *dev , u16 xid , struct scatterlist *sgl , unsigned int sgc ))0, (int (*)(struct net_device *dev , u16 xid ))0, (int (*)(struct net_device *dev , u16 xid , struct scatterlist *sgl , unsigned int sgc ))0, (int (*)(struct net_device *dev , u64 *wwn , int type ))0, (int (*)(struct net_device *dev , struct sk_buff const *skb , u16 rxq_index , u32 flow_id ))0, (int (*)(struct net_device *dev , struct net_device *slave_dev ))0, (int (*)(struct net_device *dev , struct net_device *slave_dev ))0, (u32 (*)(struct net_device *dev , u32 features ))0, (int (*)(struct net_device *dev , u32 features ))0}; [L6288-L6292] static struct can_bittiming_const ems_usb_bittiming_const = {{(char )'e', (char )'m', (char )'s', (char )'_', (char )'u', (char )'s', (char )'b', (char )'\000', (char)0, (char)0, (char)0, (char)0, (char)0, (char)0, (char)0, (char)0}, (__u32 )1, (__u32 )16, (__u32 )1, (__u32 )8, (__u32 )4, (__u32 )1, (__u32 )64, (__u32 )1}; [L6543-L6561] static struct usb_driver ems_usb_driver = {"ems_usb", & ems_usb_probe, & ems_usb_disconnect, (int (*)(struct usb_interface *intf , unsigned int code , void *buf ))0, (int (*)(struct usb_interface *intf , pm_message_t message ))0, (int (*)(struct usb_interface *intf ))0, (int (*)(struct usb_interface *intf ))0, (int (*)(struct usb_interface *intf ))0, (int (*)(struct usb_interface *intf ))0, (struct usb_device_id const *)(ems_usb_table), {{{{{0U}, 0U, 0U, (void *)0, {(struct lock_class_key *)0, {(struct lock_class *)0, (struct lock_class *)0}, (char const *)0, 0, 0UL}}}}, {(struct list_head *)0, (struct list_head *)0}}, {{(char const *)0, (struct bus_type *)0, (struct module *)0, (char const *)0, (_Bool)0, (struct of_device_id const *)0, (int (*)(struct device *dev ))0, (int (*)(struct device *dev ))0, (void (*)(struct device *dev ))0, (int (*)(struct device *dev , pm_message_t state ))0, (int (*)(struct device *dev ))0, (struct attribute_group const **)0, (struct dev_pm_ops const *)0, (struct driver_private *)0}, 0}, 0U, 0U, 0U}; [L6614] int LDV_IN_INTERRUPT ; [L6615] static int res_ems_usb_open_10 ; [L6616] static int res_ems_usb_close_12 ; [L6617] static int res_ems_usb_probe_16 ; [L6767] int ldv_urb_state = 0; [L6768] int ldv_coherent_state = 0; VAL [__key___7={36:0}, __key___8={37:0}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=0, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6619] struct net_device *var_group1 ; [L6620] struct sk_buff *var_group2 ; [L6621] struct usb_interface *var_group3 ; [L6622] struct usb_device_id const *var_ems_usb_probe_16_p1 ; [L6623] int tmp___7 ; [L6624] int ldv_s_ems_usb_netdev_ops_net_device_ops ; [L6625] int ldv_s_ems_usb_driver_usb_driver ; [L6626] int tmp___8 ; [L6627] int tmp___9 ; [L6630] LDV_IN_INTERRUPT = 1 [L6631] FCALL ldv_initialize() [L6632] CALL, EXPR ems_usb_init() VAL [__key___7={36:0}, __key___8={37:0}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6565] int err ; [L6569] CALL, EXPR usb_register(& ems_usb_driver) [L5140] int tmp___7 ; [L5143] CALL, EXPR usb_register_driver(driver, & __this_module, "ems_usb") [L7025] return __VERIFIER_nondet_int(); [L5143] RET, EXPR usb_register_driver(driver, & __this_module, "ems_usb") [L5143] tmp___7 = usb_register_driver(driver, & __this_module, "ems_usb") [L5145] return (tmp___7); VAL [\result=0, __key___7={36:0}, __key___8={37:0}, __this_module={71:70}, driver={41:0}, driver={41:0}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7=0] [L6569] RET, EXPR usb_register(& ems_usb_driver) [L6569] err = usb_register(& ems_usb_driver) [L6571] COND FALSE !(\read(err)) [L6578] return (0); VAL [\result=0, __key___7={36:0}, __key___8={37:0}, __this_module={71:70}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, err=0, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6632] RET, EXPR ems_usb_init() VAL [__key___7={36:0}, __key___8={37:0}, __this_module={71:70}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_init()=0, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6632] tmp___7 = ems_usb_init() [L6634] COND FALSE !(\read(tmp___7)) [L6638] ldv_s_ems_usb_netdev_ops_net_device_ops = 0 [L6639] ldv_s_ems_usb_driver_usb_driver = 0 VAL [__key___7={36:0}, __key___8={37:0}, __this_module={71:70}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_s_ems_usb_driver_usb_driver=0, ldv_s_ems_usb_netdev_ops_net_device_ops=0, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7=0] [L6641] COND TRUE 1 VAL [__key___7={36:0}, __key___8={37:0}, __this_module={71:70}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_s_ems_usb_driver_usb_driver=0, ldv_s_ems_usb_netdev_ops_net_device_ops=0, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7=0] [L6644] tmp___9 = __VERIFIER_nondet_int() [L6646] COND TRUE \read(tmp___9) VAL [__key___7={36:0}, __key___8={37:0}, __this_module={71:70}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_s_ems_usb_driver_usb_driver=0, ldv_s_ems_usb_netdev_ops_net_device_ops=0, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7=0, tmp___9=2147483648] [L6655] tmp___8 = __VERIFIER_nondet_int() [L6657] COND FALSE !(tmp___8 == 0) VAL [__key___7={36:0}, __key___8={37:0}, __this_module={71:70}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_s_ems_usb_driver_usb_driver=0, ldv_s_ems_usb_netdev_ops_net_device_ops=0, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7=0, tmp___8=2, tmp___9=2147483648] [L6660] COND FALSE !(tmp___8 == 1) VAL [__key___7={36:0}, __key___8={37:0}, __this_module={71:70}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_s_ems_usb_driver_usb_driver=0, ldv_s_ems_usb_netdev_ops_net_device_ops=0, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7=0, tmp___8=2, tmp___9=2147483648] [L6663] COND TRUE tmp___8 == 2 VAL [__key___7={36:0}, __key___8={37:0}, __this_module={71:70}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_s_ems_usb_driver_usb_driver=0, ldv_s_ems_usb_netdev_ops_net_device_ops=0, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7=0, tmp___8=2, tmp___9=2147483648] [L6704] CALL ems_usb_start_xmit(var_group2, var_group1) [L6048] struct ems_usb *dev ; [L6049] void *tmp___7 ; [L6050] struct ems_tx_urb_context *context ; [L6051] struct net_device_stats *stats ; [L6052] struct can_frame *cf ; [L6053] struct ems_cpc_msg *msg ; [L6054] struct urb *urb ; [L6055] u8 *buf ; [L6056] int i ; [L6057] int err ; [L6058] size_t size ; [L6059] int tmp___8 ; [L6060] void *tmp___9 ; [L6061] unsigned int tmp___10 ; [L6062] int tmp___11 ; [L6063] long tmp___12 ; VAL [__key___7={36:0}, __key___8={37:0}, __this_module={71:70}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, netdev={0:-2952}, netdev={0:-2952}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, skb={0:70368744177664}, skb={0:70368744177664}] [L6066] CALL, EXPR netdev_priv((struct net_device const *)netdev) VAL [__key___7={36:0}, __key___8={37:0}, __this_module={71:70}, dev={0:-2952}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L4976] return ((void *)((char *)dev + ((sizeof(struct net_device ) + 31UL) & 0x0fffffffffffffe0UL))); VAL [\result={0:-520}, __key___7={36:0}, __key___8={37:0}, __this_module={71:70}, dev={0:-2952}, dev={0:-2952}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6066] RET, EXPR netdev_priv((struct net_device const *)netdev) VAL [__key___7={36:0}, __key___8={37:0}, __this_module={71:70}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, netdev={0:-2952}, netdev={0:-2952}, netdev_priv((struct net_device const *)netdev)={0:-520}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, skb={0:70368744177664}, skb={0:70368744177664}] [L6066] tmp___7 = netdev_priv((struct net_device const *)netdev) [L6067] dev = (struct ems_usb *)tmp___7 [L6068] context = (struct ems_tx_urb_context *)((void *)0) [L6069] stats = & netdev->stats [L6070] EXPR skb->data [L6070] cf = (struct can_frame *)skb->data [L6071] size = 15UL + sizeof(struct cpc_can_msg ) [L6072] CALL, EXPR can_dropped_invalid_skb(netdev, skb) [L5252] struct can_frame const *cf ; [L5253] int tmp___7 ; [L5254] long tmp___8 ; [L5256] EXPR skb->data [L5256] cf = (struct can_frame const *)((struct can_frame *)skb->data) [L5257] EXPR skb->len VAL [__key___7={36:0}, __key___8={37:0}, __this_module={71:70}, cf={1048576:0}, dev={0:-2952}, dev={0:-2952}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, skb={0:70368744177664}, skb={0:70368744177664}, skb->len=13] [L5257] COND FALSE !((unsigned long )skb->len != sizeof(*cf)) [L5260] EXPR cf->can_dlc VAL [__key___7={36:0}, __key___8={37:0}, __this_module={71:70}, cf={1048576:0}, cf->can_dlc=0, dev={0:-2952}, dev={0:-2952}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, skb={0:70368744177664}, skb={0:70368744177664}] [L5260] COND FALSE !((int const )cf->can_dlc > 8) [L5263] tmp___7 = 0 VAL [__key___7={36:0}, __key___8={37:0}, __this_module={71:70}, cf={1048576:0}, dev={0:-2952}, dev={0:-2952}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, skb={0:70368744177664}, skb={0:70368744177664}, tmp___7=0] [L5266] tmp___8 = __builtin_expect((long )tmp___7, 0L) VAL [__key___7={36:0}, __key___8={37:0}, __this_module={71:70}, cf={1048576:0}, dev={0:-2952}, dev={0:-2952}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, skb={0:70368744177664}, skb={0:70368744177664}, tmp___7=0, tmp___8=0] [L5268] COND FALSE !(\read(tmp___8)) [L5276] return (0); VAL [\result=0, __key___7={36:0}, __key___8={37:0}, __this_module={71:70}, cf={1048576:0}, dev={0:-2952}, dev={0:-2952}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, skb={0:70368744177664}, skb={0:70368744177664}, tmp___7=0, tmp___8=0] [L6072] RET, EXPR can_dropped_invalid_skb(netdev, skb) [L6072] tmp___8 = can_dropped_invalid_skb(netdev, skb) [L6074] COND FALSE !(\read(tmp___8)) VAL [__key___7={36:0}, __key___8={37:0}, __this_module={71:70}, cf={1048576:0}, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, netdev={0:-2952}, netdev={0:-2952}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={0:70368744177664}, skb={0:70368744177664}, stats={0:-2764}, tmp___7={0:-520}, tmp___8=0] [L6079] CALL, EXPR usb_alloc_urb(0, 32U) VAL [\old(iso_packets)=0, \old(ldv_urb_state)=0, \old(mem_flags)=32, __key___7={36:0}, __key___8={37:0}, __this_module={71:70}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6830] void *arbitrary_memory ; [L6831] void *tmp___7 ; VAL [\old(iso_packets)=0, \old(ldv_urb_state)=0, \old(mem_flags)=32, __key___7={36:0}, __key___8={37:0}, __this_module={71:70}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, iso_packets=0, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, mem_flags=32, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6834] COND TRUE 1 VAL [\old(iso_packets)=0, \old(ldv_urb_state)=0, \old(mem_flags)=32, __key___7={36:0}, __key___8={37:0}, __this_module={71:70}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, iso_packets=0, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, mem_flags=32, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6837] CALL, EXPR ldv_undefined_pointer() VAL [\old(ldv_urb_state)=0, __key___7={36:0}, __key___8={37:0}, __this_module={71:70}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6982] CALL, EXPR ldv_malloc(0UL) VAL [\old(ldv_urb_state)=0, \old(size)=0, __key___7={36:0}, __key___8={37:0}, __this_module={71:70}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6911] COND FALSE !(__VERIFIER_nondet_bool()) [L6912] return malloc(size); [L6982] RET, EXPR ldv_malloc(0UL) VAL [\old(ldv_urb_state)=0, __key___7={36:0}, __key___8={37:0}, __this_module={71:70}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_malloc(0UL)={77:0}, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6982] return ldv_malloc(0UL); [L6837] RET, EXPR ldv_undefined_pointer() VAL [\old(iso_packets)=0, \old(ldv_urb_state)=0, \old(mem_flags)=32, __key___7={36:0}, __key___8={37:0}, __this_module={71:70}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, iso_packets=0, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_undefined_pointer()={77:0}, ldv_urb_state=0, mem_flags=32, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6837] tmp___7 = ldv_undefined_pointer() [L6838] arbitrary_memory = tmp___7 VAL [\old(iso_packets)=0, \old(ldv_urb_state)=0, \old(mem_flags)=32, __key___7={36:0}, __key___8={37:0}, __this_module={71:70}, arbitrary_memory={77:0}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, iso_packets=0, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, mem_flags=32, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7={77:0}] [L6840] COND FALSE !(! arbitrary_memory) [L6844] ldv_urb_state = ldv_urb_state + 1 [L6845] return ((struct urb *)arbitrary_memory); VAL [\old(iso_packets)=0, \old(ldv_urb_state)=0, \old(mem_flags)=32, \result={77:0}, __key___7={36:0}, __key___8={37:0}, __this_module={71:70}, arbitrary_memory={77:0}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, iso_packets=0, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, mem_flags=32, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7={77:0}] [L6079] RET, EXPR usb_alloc_urb(0, 32U) VAL [__key___7={36:0}, __key___8={37:0}, __this_module={71:70}, cf={1048576:0}, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, netdev={0:-2952}, netdev={0:-2952}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={0:70368744177664}, skb={0:70368744177664}, stats={0:-2764}, tmp___7={0:-520}, tmp___8=0, usb_alloc_urb(0, 32U)={77:0}] [L6079] urb = usb_alloc_urb(0, 32U) [L6081] COND FALSE !(! urb) [L6089] EXPR dev->udev VAL [__key___7={36:0}, __key___8={37:0}, __this_module={71:70}, cf={1048576:0}, context={0:0}, dev={0:-520}, dev->udev={562949953421312:0}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, netdev={0:-2952}, netdev={0:-2952}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={0:70368744177664}, skb={0:70368744177664}, stats={0:-2764}, tmp___7={0:-520}, tmp___8=0, urb={77:0}] [L6089] CALL, EXPR usb_alloc_coherent(dev->udev, size, 32U, & urb->transfer_dma) VAL [\old(ldv_coherent_state)=0, \old(mem_flags)=32, \old(size)=28, __key___7={36:0}, __key___8={37:0}, __this_module={71:70}, dev={562949953421312:0}, dma={77:104}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6773] void *arbitrary_memory ; [L6774] void *tmp___7 ; VAL [\old(ldv_coherent_state)=0, \old(mem_flags)=32, \old(size)=28, __key___7={36:0}, __key___8={37:0}, __this_module={71:70}, dev={562949953421312:0}, dev={562949953421312:0}, dma={77:104}, dma={77:104}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, mem_flags=32, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28] [L6777] COND TRUE 1 VAL [\old(ldv_coherent_state)=0, \old(mem_flags)=32, \old(size)=28, __key___7={36:0}, __key___8={37:0}, __this_module={71:70}, dev={562949953421312:0}, dev={562949953421312:0}, dma={77:104}, dma={77:104}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, mem_flags=32, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28] [L6780] CALL, EXPR ldv_undefined_pointer() VAL [\old(ldv_coherent_state)=0, __key___7={36:0}, __key___8={37:0}, __this_module={71:70}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6982] CALL, EXPR ldv_malloc(0UL) VAL [\old(ldv_coherent_state)=0, \old(size)=0, __key___7={36:0}, __key___8={37:0}, __this_module={71:70}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6911] COND FALSE !(__VERIFIER_nondet_bool()) [L6912] return malloc(size); [L6982] RET, EXPR ldv_malloc(0UL) VAL [\old(ldv_coherent_state)=0, __key___7={36:0}, __key___8={37:0}, __this_module={71:70}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_malloc(0UL)={50:0}, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6982] return ldv_malloc(0UL); [L6780] RET, EXPR ldv_undefined_pointer() VAL [\old(ldv_coherent_state)=0, \old(mem_flags)=32, \old(size)=28, __key___7={36:0}, __key___8={37:0}, __this_module={71:70}, dev={562949953421312:0}, dev={562949953421312:0}, dma={77:104}, dma={77:104}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_undefined_pointer()={50:0}, ldv_urb_state=1, mem_flags=32, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28] [L6780] tmp___7 = ldv_undefined_pointer() [L6781] arbitrary_memory = tmp___7 VAL [\old(ldv_coherent_state)=0, \old(mem_flags)=32, \old(size)=28, __key___7={36:0}, __key___8={37:0}, __this_module={71:70}, arbitrary_memory={50:0}, dev={562949953421312:0}, dev={562949953421312:0}, dma={77:104}, dma={77:104}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, mem_flags=32, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, tmp___7={50:0}] [L6783] COND FALSE !(! arbitrary_memory) [L6787] ldv_coherent_state = ldv_coherent_state + 1 [L6788] return (arbitrary_memory); VAL [\old(ldv_coherent_state)=0, \old(mem_flags)=32, \old(size)=28, \result={50:0}, __key___7={36:0}, __key___8={37:0}, __this_module={71:70}, arbitrary_memory={50:0}, dev={562949953421312:0}, dev={562949953421312:0}, dma={77:104}, dma={77:104}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, mem_flags=32, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, tmp___7={50:0}] [L6089] RET, EXPR usb_alloc_coherent(dev->udev, size, 32U, & urb->transfer_dma) VAL [__key___7={36:0}, __key___8={37:0}, __this_module={71:70}, cf={1048576:0}, context={0:0}, dev={0:-520}, dev->udev={562949953421312:0}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, netdev={0:-2952}, netdev={0:-2952}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={0:70368744177664}, skb={0:70368744177664}, stats={0:-2764}, tmp___7={0:-520}, tmp___8=0, urb={77:0}, usb_alloc_coherent(dev->udev, size, 32U, & urb->transfer_dma)={50:0}] [L6089] tmp___9 = usb_alloc_coherent(dev->udev, size, 32U, & urb->transfer_dma) [L6090] buf = (u8 *)tmp___9 VAL [__key___7={36:0}, __key___8={37:0}, __this_module={71:70}, buf={50:0}, cf={1048576:0}, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, netdev={0:-2952}, netdev={0:-2952}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={0:70368744177664}, skb={0:70368744177664}, stats={0:-2764}, tmp___7={0:-520}, tmp___8=0, tmp___9={50:0}, urb={77:0}] [L6092] COND FALSE !(! buf) [L6100] msg = (struct ems_cpc_msg *)(buf + 4) [L6101] EXPR cf->can_id [L6101] msg->msg.can_msg.id = cf->can_id & 536870911U [L6102] EXPR cf->can_dlc [L6102] msg->msg.can_msg.length = cf->can_dlc [L6103] EXPR cf->can_id VAL [__key___7={36:0}, __key___8={37:0}, __this_module={71:70}, buf={50:0}, cf={1048576:0}, cf->can_id=-1073741824, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={50:4}, netdev={0:-2952}, netdev={0:-2952}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={0:70368744177664}, skb={0:70368744177664}, stats={0:-2764}, tmp___7={0:-520}, tmp___8=0, tmp___9={50:0}, urb={77:0}] [L6103] COND TRUE cf->can_id & 1073741824U [L6104] EXPR cf->can_id VAL [__key___7={36:0}, __key___8={37:0}, __this_module={71:70}, buf={50:0}, cf={1048576:0}, cf->can_id=-1073741824, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={50:4}, netdev={0:-2952}, netdev={0:-2952}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={0:70368744177664}, skb={0:70368744177664}, stats={0:-2764}, tmp___7={0:-520}, tmp___8=0, tmp___9={50:0}, urb={77:0}] [L6104] COND TRUE cf->can_id & 2147483648U [L6105] msg->type = (u8 )16 VAL [__key___7={36:0}, __key___8={37:0}, __this_module={71:70}, buf={50:0}, cf={1048576:0}, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={50:4}, netdev={0:-2952}, netdev={0:-2952}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={0:70368744177664}, skb={0:70368744177664}, stats={0:-2764}, tmp___7={0:-520}, tmp___8=0, tmp___9={50:0}, urb={77:0}] [L6109] msg->length = (u8 )5 VAL [__key___7={36:0}, __key___8={37:0}, __this_module={71:70}, buf={50:0}, cf={1048576:0}, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={50:4}, netdev={0:-2952}, netdev={0:-2952}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={0:70368744177664}, skb={0:70368744177664}, stats={0:-2764}, tmp___7={0:-520}, tmp___8=0, tmp___9={50:0}, urb={77:0}] [L6132] EXPR msg->msg.can_msg.id [L6132] msg->msg.can_msg.id = msg->msg.can_msg.id [L6133] i = 0 VAL [__key___7={36:0}, __key___8={37:0}, __this_module={71:70}, buf={50:0}, cf={1048576:0}, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, i=0, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={50:4}, netdev={0:-2952}, netdev={0:-2952}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={0:70368744177664}, skb={0:70368744177664}, stats={0:-2764}, tmp___7={0:-520}, tmp___8=0, tmp___9={50:0}, urb={77:0}] [L6135] COND TRUE 1 VAL [__key___7={36:0}, __key___8={37:0}, __this_module={71:70}, buf={50:0}, cf={1048576:0}, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, i=0, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={50:4}, netdev={0:-2952}, netdev={0:-2952}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={0:70368744177664}, skb={0:70368744177664}, stats={0:-2764}, tmp___7={0:-520}, tmp___8=0, tmp___9={50:0}, urb={77:0}] [L6137] COND TRUE i < 10 VAL [__key___7={36:0}, __key___8={37:0}, __this_module={71:70}, buf={50:0}, cf={1048576:0}, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, i=0, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={50:4}, netdev={0:-2952}, netdev={0:-2952}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={0:70368744177664}, skb={0:70368744177664}, stats={0:-2764}, tmp___7={0:-520}, tmp___8=0, tmp___9={50:0}, urb={77:0}] [L6141] EXPR dev->tx_contexts[i].echo_index VAL [__key___7={36:0}, __key___8={37:0}, __this_module={71:70}, buf={50:0}, cf={1048576:0}, context={0:0}, dev={0:-520}, dev->tx_contexts[i].echo_index=10, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, i=0, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={50:4}, netdev={0:-2952}, netdev={0:-2952}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={0:70368744177664}, skb={0:70368744177664}, stats={0:-2764}, tmp___7={0:-520}, tmp___8=0, tmp___9={50:0}, urb={77:0}] [L6141] COND TRUE dev->tx_contexts[i].echo_index == 10U [L6142] context = & dev->tx_contexts[i] VAL [__key___7={36:0}, __key___8={37:0}, __this_module={71:70}, buf={50:0}, cf={1048576:0}, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, i=0, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={50:4}, netdev={0:-2952}, netdev={0:-2952}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={0:70368744177664}, skb={0:70368744177664}, stats={0:-2764}, tmp___7={0:-520}, tmp___8=0, tmp___9={50:0}, urb={77:0}] [L6151] COND TRUE ! context VAL [__key___7={36:0}, __key___8={37:0}, __this_module={71:70}, buf={50:0}, cf={1048576:0}, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, i=0, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={50:4}, netdev={0:-2952}, netdev={0:-2952}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={0:70368744177664}, skb={0:70368744177664}, stats={0:-2764}, tmp___7={0:-520}, tmp___8=0, tmp___9={50:0}, urb={77:0}] [L6153] FCALL usb_unanchor_urb(urb) VAL [__key___7={36:0}, __key___8={37:0}, __this_module={71:70}, buf={50:0}, cf={1048576:0}, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, i=0, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={50:4}, netdev={0:-2952}, netdev={0:-2952}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={0:70368744177664}, skb={0:70368744177664}, stats={0:-2764}, tmp___7={0:-520}, tmp___8=0, tmp___9={50:0}, urb={77:0}] [L6154] EXPR dev->udev [L6154] EXPR urb->transfer_dma VAL [__key___7={36:0}, __key___8={37:0}, __this_module={71:70}, buf={50:0}, cf={1048576:0}, context={0:0}, dev={0:-520}, dev->udev={562949953421312:0}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, i=0, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={50:4}, netdev={0:-2952}, netdev={0:-2952}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={0:70368744177664}, skb={0:70368744177664}, stats={0:-2764}, tmp___7={0:-520}, tmp___8=0, tmp___9={50:0}, urb={77:0}, urb->transfer_dma=2251799813685248] [L6154] CALL usb_free_coherent(dev->udev, size, (void *)buf, urb->transfer_dma) VAL [\old(dma)=2251799813685248, \old(ldv_coherent_state)=1, \old(size)=28, __key___7={36:0}, __key___8={37:0}, __this_module={71:70}, addr={50:0}, dev={562949953421312:0}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6802] COND TRUE 1 VAL [\old(dma)=2251799813685248, \old(ldv_coherent_state)=1, \old(size)=28, __key___7={36:0}, __key___8={37:0}, __this_module={71:70}, addr={50:0}, addr={50:0}, dev={562949953421312:0}, dev={562949953421312:0}, dma=2251799813685248, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28] [L6804] COND FALSE !(! ((unsigned long )addr != (unsigned long )((void *)0))) VAL [\old(dma)=2251799813685248, \old(ldv_coherent_state)=1, \old(size)=28, __key___7={36:0}, __key___8={37:0}, __this_module={71:70}, addr={50:0}, addr={50:0}, dev={562949953421312:0}, dev={562949953421312:0}, dma=2251799813685248, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28] [L6810] COND TRUE \read(*addr) VAL [\old(dma)=2251799813685248, \old(ldv_coherent_state)=1, \old(size)=28, __key___7={36:0}, __key___8={37:0}, __this_module={71:70}, addr={50:0}, addr={50:0}, dev={562949953421312:0}, dev={562949953421312:0}, dma=2251799813685248, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28] [L6811] COND TRUE ldv_coherent_state >= 1 VAL [\old(dma)=2251799813685248, \old(ldv_coherent_state)=1, \old(size)=28, __key___7={36:0}, __key___8={37:0}, __this_module={71:70}, addr={50:0}, addr={50:0}, dev={562949953421312:0}, dev={562949953421312:0}, dma=2251799813685248, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28] [L6817] ldv_coherent_state = ldv_coherent_state - 1 VAL [\old(dma)=2251799813685248, \old(ldv_coherent_state)=1, \old(size)=28, __key___7={36:0}, __key___8={37:0}, __this_module={71:70}, addr={50:0}, addr={50:0}, dev={562949953421312:0}, dev={562949953421312:0}, dma=2251799813685248, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28] [L6154] RET usb_free_coherent(dev->udev, size, (void *)buf, urb->transfer_dma) VAL [__key___7={36:0}, __key___8={37:0}, __this_module={71:70}, buf={50:0}, cf={1048576:0}, context={0:0}, dev={0:-520}, dev->udev={562949953421312:0}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, i=0, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={50:4}, netdev={0:-2952}, netdev={0:-2952}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={0:70368744177664}, skb={0:70368744177664}, stats={0:-2764}, tmp___7={0:-520}, tmp___8=0, tmp___9={50:0}, urb={77:0}, urb->transfer_dma=2251799813685248] [L6155] netdev->dev.parent [L6157] return ((netdev_tx_t )16); VAL [\result=16, __key___7={36:0}, __key___8={37:0}, __this_module={71:70}, buf={50:0}, cf={1048576:0}, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, i=0, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={50:4}, netdev={0:-2952}, netdev={0:-2952}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={0:70368744177664}, skb={0:70368744177664}, stats={0:-2764}, tmp___7={0:-520}, tmp___8=0, tmp___9={50:0}, urb={77:0}] [L6704] RET ems_usb_start_xmit(var_group2, var_group1) [L6641] COND TRUE 1 VAL [__key___7={36:0}, __key___8={37:0}, __this_module={71:70}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_s_ems_usb_driver_usb_driver=0, ldv_s_ems_usb_netdev_ops_net_device_ops=0, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7=0, tmp___8=2, tmp___9=2147483648, var_group1={0:-2952}, var_group2={0:70368744177664}] [L6644] tmp___9 = __VERIFIER_nondet_int() [L6646] COND FALSE !(\read(tmp___9)) VAL [__key___7={36:0}, __key___8={37:0}, __this_module={71:70}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_s_ems_usb_driver_usb_driver=0, ldv_s_ems_usb_netdev_ops_net_device_ops=0, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7=0, tmp___8=2, tmp___9=0, var_group1={0:-2952}, var_group2={0:70368744177664}] [L6648] COND FALSE !(! (ldv_s_ems_usb_netdev_ops_net_device_ops == 0)) VAL [__key___7={36:0}, __key___8={37:0}, __this_module={71:70}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_s_ems_usb_driver_usb_driver=0, ldv_s_ems_usb_netdev_ops_net_device_ops=0, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7=0, tmp___8=2, tmp___9=0, var_group1={0:-2952}, var_group2={0:70368744177664}] [L6650] COND FALSE !(! (ldv_s_ems_usb_driver_usb_driver == 0)) VAL [__key___7={36:0}, __key___8={37:0}, __this_module={71:70}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_s_ems_usb_driver_usb_driver=0, ldv_s_ems_usb_netdev_ops_net_device_ops=0, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7=0, tmp___8=2, tmp___9=0, var_group1={0:-2952}, var_group2={0:70368744177664}] [L6742] CALL ems_usb_exit() VAL [__key___7={36:0}, __key___8={37:0}, __this_module={71:70}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6587] FCALL usb_deregister(& ems_usb_driver) [L6742] RET ems_usb_exit() VAL [__key___7={36:0}, __key___8={37:0}, __this_module={71:70}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_s_ems_usb_driver_usb_driver=0, ldv_s_ems_usb_netdev_ops_net_device_ops=0, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7=0, tmp___8=2, tmp___9=0, var_group1={0:-2952}, var_group2={0:70368744177664}] [L6746] CALL ldv_check_final_state() [L6889] COND FALSE !(ldv_urb_state == 0) VAL [__key___7={36:0}, __key___8={37:0}, __this_module={71:70}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6892] CALL ldv_blast_assert() VAL [__key___7={36:0}, __key___8={37:0}, __this_module={71:70}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6754] reach_error() VAL [__key___7={36:0}, __key___8={37:0}, __this_module={71:70}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 36 procedures, 432 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 213.1s, OverallIterations: 28, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 125.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 27 mSolverCounterUnknown, 13512 SdHoareTripleChecker+Valid, 100.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12087 mSDsluCounter, 104491 SdHoareTripleChecker+Invalid, 97.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 84060 mSDsCounter, 2882 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5745 IncrementalHoareTripleChecker+Invalid, 8654 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2882 mSolverCounterUnsat, 20431 mSDtfsCounter, 5745 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4595 GetRequests, 4430 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 8.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16042occurred in iteration=23, InterpolantAutomatonStates: 191, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 21.3s AutomataMinimizationTime, 27 MinimizatonAttempts, 80511 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 15.9s SatisfiabilityAnalysisTime, 32.2s InterpolantComputationTime, 2413 NumberOfCodeBlocks, 2413 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 4560 ConstructedInterpolants, 0 QuantifiedInterpolants, 6618 SizeOfPredicates, 45 NumberOfNonLiveVariables, 17151 ConjunctsInSsa, 192 ConjunctsInUnsatCore, 54 InterpolantComputations, 46 PerfectInterpolantSequences, 468/504 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-20 06:44:28,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8be0a5e6-3ecc-48ae-a5a7-5a1ab210542f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample