./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa --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 e3555fedd9f92961bad45780711b37c7eb42c00277e0bac6769cfc03eaec14a8 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 23:27:22,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 23:27:22,525 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 23:27:22,559 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 23:27:22,559 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 23:27:22,560 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 23:27:22,561 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 23:27:22,563 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 23:27:22,564 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 23:27:22,565 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 23:27:22,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 23:27:22,572 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 23:27:22,572 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 23:27:22,573 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 23:27:22,574 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 23:27:22,575 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 23:27:22,576 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 23:27:22,577 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 23:27:22,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 23:27:22,580 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 23:27:22,582 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 23:27:22,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 23:27:22,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 23:27:22,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 23:27:22,589 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 23:27:22,589 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 23:27:22,590 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 23:27:22,596 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 23:27:22,596 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 23:27:22,598 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 23:27:22,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 23:27:22,599 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 23:27:22,600 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 23:27:22,600 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 23:27:22,601 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 23:27:22,602 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 23:27:22,602 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 23:27:22,602 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 23:27:22,603 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 23:27:22,603 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 23:27:22,604 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 23:27:22,605 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-06 23:27:22,621 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 23:27:22,621 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 23:27:22,621 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 23:27:22,621 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 23:27:22,622 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 23:27:22,622 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 23:27:22,622 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 23:27:22,622 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 23:27:22,622 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 23:27:22,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 23:27:22,623 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 23:27:22,623 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 23:27:22,623 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 23:27:22,623 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 23:27:22,623 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 23:27:22,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 23:27:22,623 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 23:27:22,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 23:27:22,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 23:27:22,624 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 23:27:22,624 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 23:27:22,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:27:22,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 23:27:22,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 23:27:22,624 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 23:27:22,624 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 23:27:22,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 23:27:22,625 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 23:27:22,625 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 23:27:22,625 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 23:27:22,625 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 23:27:22,625 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_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3555fedd9f92961bad45780711b37c7eb42c00277e0bac6769cfc03eaec14a8 [2021-12-06 23:27:22,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 23:27:22,811 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 23:27:22,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 23:27:22,815 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 23:27:22,815 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 23:27:22,816 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i [2021-12-06 23:27:22,859 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/data/079df1899/567baa6d24874066b03d9708d3bb3d3d/FLAGf1cd0f85d [2021-12-06 23:27:23,438 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 23:27:23,439 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i [2021-12-06 23:27:23,461 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/data/079df1899/567baa6d24874066b03d9708d3bb3d3d/FLAGf1cd0f85d [2021-12-06 23:27:23,894 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/data/079df1899/567baa6d24874066b03d9708d3bb3d3d [2021-12-06 23:27:23,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 23:27:23,897 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 23:27:23,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 23:27:23,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 23:27:23,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 23:27:23,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:27:23" (1/1) ... [2021-12-06 23:27:23,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24befad9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:27:23, skipping insertion in model container [2021-12-06 23:27:23,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:27:23" (1/1) ... [2021-12-06 23:27:23,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 23:27:23,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:27:24,455 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_565fba6f-596b-4c33-8664-6395f16431e8/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i[88044,88057] [2021-12-06 23:27:24,832 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:27:24,857 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 23:27:24,910 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_565fba6f-596b-4c33-8664-6395f16431e8/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i[88044,88057] [2021-12-06 23:27:25,039 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:27:25,100 INFO L208 MainTranslator]: Completed translation [2021-12-06 23:27:25,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:27:25 WrapperNode [2021-12-06 23:27:25,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 23:27:25,101 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 23:27:25,101 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 23:27:25,102 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 23:27:25,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:27:25" (1/1) ... [2021-12-06 23:27:25,153 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:27:25" (1/1) ... [2021-12-06 23:27:25,261 INFO L137 Inliner]: procedures = 203, calls = 1279, calls flagged for inlining = 87, calls inlined = 87, statements flattened = 3493 [2021-12-06 23:27:25,261 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 23:27:25,262 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 23:27:25,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 23:27:25,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 23:27:25,270 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:27:25" (1/1) ... [2021-12-06 23:27:25,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:27:25" (1/1) ... [2021-12-06 23:27:25,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:27:25" (1/1) ... [2021-12-06 23:27:25,285 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:27:25" (1/1) ... [2021-12-06 23:27:25,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:27:25" (1/1) ... [2021-12-06 23:27:25,373 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:27:25" (1/1) ... [2021-12-06 23:27:25,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:27:25" (1/1) ... [2021-12-06 23:27:25,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 23:27:25,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 23:27:25,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 23:27:25,408 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 23:27:25,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:27:25" (1/1) ... [2021-12-06 23:27:25,415 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:27:25,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:27:25,437 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 23:27:25,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 23:27:25,477 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_free [2021-12-06 23:27:25,477 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_free [2021-12-06 23:27:25,477 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_nonpositive [2021-12-06 23:27:25,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_nonpositive [2021-12-06 23:27:25,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-06 23:27:25,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-06 23:27:25,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-06 23:27:25,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-06 23:27:25,478 INFO L130 BoogieDeclarations]: Found specification of procedure get_gadget_data [2021-12-06 23:27:25,478 INFO L138 BoogieDeclarations]: Found implementation of procedure get_gadget_data [2021-12-06 23:27:25,478 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_free_request [2021-12-06 23:27:25,479 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_free_request [2021-12-06 23:27:25,479 INFO L130 BoogieDeclarations]: Found specification of procedure printer_reset_interface [2021-12-06 23:27:25,479 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_reset_interface [2021-12-06 23:27:25,479 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-06 23:27:25,479 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-06 23:27:25,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-06 23:27:25,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-06 23:27:25,479 INFO L130 BoogieDeclarations]: Found specification of procedure printer_soft_reset [2021-12-06 23:27:25,480 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_soft_reset [2021-12-06 23:27:25,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_class [2021-12-06 23:27:25,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_class [2021-12-06 23:27:25,480 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2021-12-06 23:27:25,480 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2021-12-06 23:27:25,480 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rx_reqs [2021-12-06 23:27:25,480 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rx_reqs [2021-12-06 23:27:25,481 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-06 23:27:25,481 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-06 23:27:25,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-06 23:27:25,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-06 23:27:25,481 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_vbus_draw [2021-12-06 23:27:25,481 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_vbus_draw [2021-12-06 23:27:25,481 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 23:27:25,482 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 23:27:25,482 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-06 23:27:25,482 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-06 23:27:25,482 INFO L130 BoogieDeclarations]: Found specification of procedure poll_wait [2021-12-06 23:27:25,482 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_wait [2021-12-06 23:27:25,482 INFO L130 BoogieDeclarations]: Found specification of procedure printer_fsync [2021-12-06 23:27:25,482 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_fsync [2021-12-06 23:27:25,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 23:27:25,483 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-06 23:27:25,483 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-06 23:27:25,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 23:27:25,483 INFO L130 BoogieDeclarations]: Found specification of procedure printer_open [2021-12-06 23:27:25,483 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_open [2021-12-06 23:27:25,483 INFO L130 BoogieDeclarations]: Found specification of procedure printer_bind [2021-12-06 23:27:25,483 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_bind [2021-12-06 23:27:25,484 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-12-06 23:27:25,484 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-12-06 23:27:25,484 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-06 23:27:25,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-06 23:27:25,484 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2021-12-06 23:27:25,484 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2021-12-06 23:27:25,484 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-06 23:27:25,485 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-06 23:27:25,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 23:27:25,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 23:27:25,485 INFO L130 BoogieDeclarations]: Found specification of procedure trace_kmalloc [2021-12-06 23:27:25,485 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_kmalloc [2021-12-06 23:27:25,485 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-06 23:27:25,485 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-06 23:27:25,486 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-12-06 23:27:25,486 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-12-06 23:27:25,486 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2021-12-06 23:27:25,486 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2021-12-06 23:27:25,486 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-06 23:27:25,486 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-06 23:27:25,486 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-06 23:27:25,486 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-06 23:27:25,487 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_alloc [2021-12-06 23:27:25,487 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_alloc [2021-12-06 23:27:25,487 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-06 23:27:25,487 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-06 23:27:25,487 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-12-06 23:27:25,487 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-12-06 23:27:25,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-06 23:27:25,488 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-06 23:27:25,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-06 23:27:25,488 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-06 23:27:25,488 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-06 23:27:25,488 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2021-12-06 23:27:25,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2021-12-06 23:27:25,488 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-12-06 23:27:25,489 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-12-06 23:27:25,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-06 23:27:25,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 23:27:25,489 INFO L130 BoogieDeclarations]: Found specification of procedure printer_poll [2021-12-06 23:27:25,489 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_poll [2021-12-06 23:27:25,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-06 23:27:25,489 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-06 23:27:25,489 INFO L130 BoogieDeclarations]: Found specification of procedure set_printer_interface [2021-12-06 23:27:25,490 INFO L138 BoogieDeclarations]: Found implementation of procedure set_printer_interface [2021-12-06 23:27:25,490 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2021-12-06 23:27:25,490 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2021-12-06 23:27:25,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 23:27:25,490 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_queue [2021-12-06 23:27:25,490 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_queue [2021-12-06 23:27:25,490 INFO L130 BoogieDeclarations]: Found specification of procedure set_interface [2021-12-06 23:27:25,490 INFO L138 BoogieDeclarations]: Found implementation of procedure set_interface [2021-12-06 23:27:25,491 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup_complete [2021-12-06 23:27:25,491 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup_complete [2021-12-06 23:27:25,491 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-06 23:27:25,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-06 23:27:25,491 INFO L130 BoogieDeclarations]: Found specification of procedure printer_write [2021-12-06 23:27:25,491 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_write [2021-12-06 23:27:25,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 23:27:25,491 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-12-06 23:27:25,492 INFO L130 BoogieDeclarations]: Found specification of procedure printer_unbind [2021-12-06 23:27:25,492 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_unbind [2021-12-06 23:27:25,492 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc_notrace [2021-12-06 23:27:25,492 INFO L130 BoogieDeclarations]: Found specification of procedure printer_close [2021-12-06 23:27:25,492 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_close [2021-12-06 23:27:25,492 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-12-06 23:27:25,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-12-06 23:27:25,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 23:27:25,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 23:27:25,493 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-06 23:27:25,493 INFO L130 BoogieDeclarations]: Found specification of procedure init_utsname [2021-12-06 23:27:25,493 INFO L138 BoogieDeclarations]: Found implementation of procedure init_utsname [2021-12-06 23:27:25,493 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_enable [2021-12-06 23:27:25,493 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_enable [2021-12-06 23:27:25,493 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_notrace [2021-12-06 23:27:25,493 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_notrace [2021-12-06 23:27:25,493 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-06 23:27:25,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-06 23:27:25,494 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-12-06 23:27:25,494 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-12-06 23:27:25,494 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_autoconfig [2021-12-06 23:27:25,494 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_autoconfig [2021-12-06 23:27:25,494 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-12-06 23:27:25,494 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-12-06 23:27:25,494 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-06 23:27:25,494 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-06 23:27:25,494 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup [2021-12-06 23:27:25,494 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup [2021-12-06 23:27:25,495 INFO L130 BoogieDeclarations]: Found specification of procedure set_gadget_data [2021-12-06 23:27:25,495 INFO L138 BoogieDeclarations]: Found implementation of procedure set_gadget_data [2021-12-06 23:27:25,495 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-06 23:27:25,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-06 23:27:25,495 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_disable [2021-12-06 23:27:25,495 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_disable [2021-12-06 23:27:25,495 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-12-06 23:27:25,495 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-12-06 23:27:25,495 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_region [2021-12-06 23:27:25,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_region [2021-12-06 23:27:25,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 23:27:25,496 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-12-06 23:27:25,496 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-12-06 23:27:25,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 23:27:25,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 23:27:25,496 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-06 23:27:25,496 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-06 23:27:25,864 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 23:27:25,866 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 23:27:26,016 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-06 23:27:40,782 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 23:27:40,796 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 23:27:40,797 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 23:27:40,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:27:40 BoogieIcfgContainer [2021-12-06 23:27:40,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 23:27:40,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 23:27:40,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 23:27:40,803 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 23:27:40,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 11:27:23" (1/3) ... [2021-12-06 23:27:40,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59adddfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:27:40, skipping insertion in model container [2021-12-06 23:27:40,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:27:25" (2/3) ... [2021-12-06 23:27:40,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59adddfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:27:40, skipping insertion in model container [2021-12-06 23:27:40,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:27:40" (3/3) ... [2021-12-06 23:27:40,806 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i [2021-12-06 23:27:40,809 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 23:27:40,810 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 23:27:40,849 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:27:40,854 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 [2021-12-06 23:27:40,854 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 23:27:40,887 INFO L276 IsEmpty]: Start isEmpty. Operand has 1275 states, 884 states have (on average 1.3834841628959276) internal successors, (1223), 927 states have internal predecessors, (1223), 323 states have call successors, (323), 67 states have call predecessors, (323), 66 states have return successors, (319), 316 states have call predecessors, (319), 319 states have call successors, (319) [2021-12-06 23:27:40,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-06 23:27:40,895 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:27:40,896 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:27:40,896 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:27:40,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:27:40,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1492979739, now seen corresponding path program 1 times [2021-12-06 23:27:40,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:27:40,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665700191] [2021-12-06 23:27:40,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:27:40,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:27:41,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:27:41,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:27:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:27:41,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 23:27:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:27:41,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 23:27:41,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:27:41,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:27:41,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:27:41,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 23:27:41,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:27:41,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:27:41,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:27:41,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 23:27:41,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:27:41,480 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-06 23:27:41,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:27:41,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665700191] [2021-12-06 23:27:41,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665700191] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:27:41,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:27:41,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 23:27:41,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303275521] [2021-12-06 23:27:41,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:27:41,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:27:41,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:27:41,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:27:41,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:27:41,514 INFO L87 Difference]: Start difference. First operand has 1275 states, 884 states have (on average 1.3834841628959276) internal successors, (1223), 927 states have internal predecessors, (1223), 323 states have call successors, (323), 67 states have call predecessors, (323), 66 states have return successors, (319), 316 states have call predecessors, (319), 319 states have call successors, (319) Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-06 23:27:43,568 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:27:48,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:27:48,630 INFO L93 Difference]: Finished difference Result 4347 states and 6622 transitions. [2021-12-06 23:27:48,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:27:48,633 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 56 [2021-12-06 23:27:48,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:27:48,668 INFO L225 Difference]: With dead ends: 4347 [2021-12-06 23:27:48,668 INFO L226 Difference]: Without dead ends: 3058 [2021-12-06 23:27:48,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:27:48,682 INFO L933 BasicCegarLoop]: 1898 mSDtfsCounter, 3882 mSDsluCounter, 2336 mSDsCounter, 0 mSdLazyCounter, 1573 mSolverCounterSat, 1999 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4202 SdHoareTripleChecker+Valid, 4234 SdHoareTripleChecker+Invalid, 3573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1999 IncrementalHoareTripleChecker+Valid, 1573 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-12-06 23:27:48,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4202 Valid, 4234 Invalid, 3573 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1999 Valid, 1573 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2021-12-06 23:27:48,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3058 states. [2021-12-06 23:27:48,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3058 to 2334. [2021-12-06 23:27:48,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2334 states, 1608 states have (on average 1.3600746268656716) internal successors, (2187), 1669 states have internal predecessors, (2187), 602 states have call successors, (602), 125 states have call predecessors, (602), 123 states have return successors, (590), 581 states have call predecessors, (590), 590 states have call successors, (590) [2021-12-06 23:27:48,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 3379 transitions. [2021-12-06 23:27:48,871 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 3379 transitions. Word has length 56 [2021-12-06 23:27:48,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:27:48,872 INFO L470 AbstractCegarLoop]: Abstraction has 2334 states and 3379 transitions. [2021-12-06 23:27:48,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-06 23:27:48,872 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 3379 transitions. [2021-12-06 23:27:48,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-06 23:27:48,876 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:27:48,876 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:27:48,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 23:27:48,877 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:27:48,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:27:48,877 INFO L85 PathProgramCache]: Analyzing trace with hash -963250297, now seen corresponding path program 1 times [2021-12-06 23:27:48,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:27:48,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396851110] [2021-12-06 23:27:48,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:27:48,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:27:48,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:27:49,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:27:49,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:27:49,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 23:27:49,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:27:49,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 23:27:49,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:27:49,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:27:49,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:27:49,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 23:27:49,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:27:49,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:27:49,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:27:49,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 23:27:49,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:27:49,155 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-06 23:27:49,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:27:49,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396851110] [2021-12-06 23:27:49,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396851110] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:27:49,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:27:49,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 23:27:49,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188932332] [2021-12-06 23:27:49,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:27:49,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:27:49,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:27:49,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:27:49,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:27:49,158 INFO L87 Difference]: Start difference. First operand 2334 states and 3379 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-06 23:27:51,193 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:27:58,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:27:58,151 INFO L93 Difference]: Finished difference Result 8380 states and 12482 transitions. [2021-12-06 23:27:58,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:27:58,151 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 57 [2021-12-06 23:27:58,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:27:58,188 INFO L225 Difference]: With dead ends: 8380 [2021-12-06 23:27:58,188 INFO L226 Difference]: Without dead ends: 6061 [2021-12-06 23:27:58,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:27:58,198 INFO L933 BasicCegarLoop]: 1963 mSDtfsCounter, 3190 mSDsluCounter, 2946 mSDsCounter, 0 mSdLazyCounter, 2127 mSolverCounterSat, 1144 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3505 SdHoareTripleChecker+Valid, 4909 SdHoareTripleChecker+Invalid, 3272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1144 IncrementalHoareTripleChecker+Valid, 2127 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2021-12-06 23:27:58,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3505 Valid, 4909 Invalid, 3272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1144 Valid, 2127 Invalid, 1 Unknown, 0 Unchecked, 8.6s Time] [2021-12-06 23:27:58,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6061 states. [2021-12-06 23:27:58,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6061 to 4613. [2021-12-06 23:27:58,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4613 states, 3187 states have (on average 1.3614684656416693) internal successors, (4339), 3300 states have internal predecessors, (4339), 1182 states have call successors, (1182), 247 states have call predecessors, (1182), 243 states have return successors, (1164), 1149 states have call predecessors, (1164), 1164 states have call successors, (1164) [2021-12-06 23:27:58,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4613 states to 4613 states and 6685 transitions. [2021-12-06 23:27:58,386 INFO L78 Accepts]: Start accepts. Automaton has 4613 states and 6685 transitions. Word has length 57 [2021-12-06 23:27:58,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:27:58,387 INFO L470 AbstractCegarLoop]: Abstraction has 4613 states and 6685 transitions. [2021-12-06 23:27:58,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-06 23:27:58,387 INFO L276 IsEmpty]: Start isEmpty. Operand 4613 states and 6685 transitions. [2021-12-06 23:27:58,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-06 23:27:58,390 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:27:58,390 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:27:58,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 23:27:58,390 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:27:58,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:27:58,390 INFO L85 PathProgramCache]: Analyzing trace with hash 538243510, now seen corresponding path program 1 times [2021-12-06 23:27:58,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:27:58,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453517401] [2021-12-06 23:27:58,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:27:58,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:27:58,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:27:58,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:27:58,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:27:58,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 23:27:58,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:27:58,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 23:27:58,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:27:58,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:27:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:27:58,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 23:27:58,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:27:58,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:27:58,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:27:58,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 23:27:58,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:27:58,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 23:27:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:27:58,652 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-06 23:27:58,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:27:58,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453517401] [2021-12-06 23:27:58,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453517401] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:27:58,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:27:58,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:27:58,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300507271] [2021-12-06 23:27:58,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:27:58,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:27:58,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:27:58,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:27:58,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:27:58,654 INFO L87 Difference]: Start difference. First operand 4613 states and 6685 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 23:28:00,689 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:28:02,721 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:28:08,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:28:08,084 INFO L93 Difference]: Finished difference Result 14993 states and 22029 transitions. [2021-12-06 23:28:08,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:28:08,084 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (10), 3 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 59 [2021-12-06 23:28:08,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:28:08,142 INFO L225 Difference]: With dead ends: 14993 [2021-12-06 23:28:08,142 INFO L226 Difference]: Without dead ends: 10395 [2021-12-06 23:28:08,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:28:08,159 INFO L933 BasicCegarLoop]: 2055 mSDtfsCounter, 2217 mSDsluCounter, 2154 mSDsCounter, 0 mSdLazyCounter, 1309 mSolverCounterSat, 841 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2487 SdHoareTripleChecker+Valid, 4209 SdHoareTripleChecker+Invalid, 2152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 841 IncrementalHoareTripleChecker+Valid, 1309 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:28:08,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2487 Valid, 4209 Invalid, 2152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [841 Valid, 1309 Invalid, 2 Unknown, 0 Unchecked, 9.1s Time] [2021-12-06 23:28:08,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10395 states. [2021-12-06 23:28:08,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10395 to 8963. [2021-12-06 23:28:08,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8963 states, 6186 states have (on average 1.3632395732298739) internal successors, (8433), 6394 states have internal predecessors, (8433), 2294 states have call successors, (2294), 487 states have call predecessors, (2294), 482 states have return successors, (2276), 2249 states have call predecessors, (2276), 2276 states have call successors, (2276) [2021-12-06 23:28:08,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8963 states to 8963 states and 13003 transitions. [2021-12-06 23:28:08,507 INFO L78 Accepts]: Start accepts. Automaton has 8963 states and 13003 transitions. Word has length 59 [2021-12-06 23:28:08,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:28:08,507 INFO L470 AbstractCegarLoop]: Abstraction has 8963 states and 13003 transitions. [2021-12-06 23:28:08,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 23:28:08,507 INFO L276 IsEmpty]: Start isEmpty. Operand 8963 states and 13003 transitions. [2021-12-06 23:28:08,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-06 23:28:08,511 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:28:08,511 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:28:08,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 23:28:08,511 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:28:08,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:28:08,512 INFO L85 PathProgramCache]: Analyzing trace with hash 661729035, now seen corresponding path program 1 times [2021-12-06 23:28:08,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:28:08,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135435431] [2021-12-06 23:28:08,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:28:08,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:28:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:08,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:28:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:08,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 23:28:08,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:08,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 23:28:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:08,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:28:08,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:08,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 23:28:08,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:08,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:28:08,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:08,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 23:28:08,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:08,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 23:28:08,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:08,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:28:08,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:08,785 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-06 23:28:08,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:28:08,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135435431] [2021-12-06 23:28:08,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135435431] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:28:08,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:28:08,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 23:28:08,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958887355] [2021-12-06 23:28:08,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:28:08,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:28:08,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:28:08,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:28:08,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:28:08,786 INFO L87 Difference]: Start difference. First operand 8963 states and 13003 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 23:28:10,820 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:28:12,852 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:28:19,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:28:19,780 INFO L93 Difference]: Finished difference Result 32602 states and 48606 transitions. [2021-12-06 23:28:19,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:28:19,781 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 75 [2021-12-06 23:28:19,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:28:19,880 INFO L225 Difference]: With dead ends: 32602 [2021-12-06 23:28:19,880 INFO L226 Difference]: Without dead ends: 23651 [2021-12-06 23:28:19,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:28:19,910 INFO L933 BasicCegarLoop]: 1919 mSDtfsCounter, 3197 mSDsluCounter, 2898 mSDsCounter, 0 mSdLazyCounter, 2140 mSolverCounterSat, 1157 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3513 SdHoareTripleChecker+Valid, 4817 SdHoareTripleChecker+Invalid, 3299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1157 IncrementalHoareTripleChecker+Valid, 2140 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:28:19,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3513 Valid, 4817 Invalid, 3299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1157 Valid, 2140 Invalid, 2 Unknown, 0 Unchecked, 10.3s Time] [2021-12-06 23:28:19,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23651 states. [2021-12-06 23:28:20,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23651 to 17850. [2021-12-06 23:28:20,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17850 states, 12333 states have (on average 1.3637395605286629) internal successors, (16819), 12737 states have internal predecessors, (16819), 4558 states have call successors, (4558), 966 states have call predecessors, (4558), 958 states have return successors, (4538), 4482 states have call predecessors, (4538), 4538 states have call successors, (4538) [2021-12-06 23:28:20,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17850 states to 17850 states and 25915 transitions. [2021-12-06 23:28:20,528 INFO L78 Accepts]: Start accepts. Automaton has 17850 states and 25915 transitions. Word has length 75 [2021-12-06 23:28:20,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:28:20,528 INFO L470 AbstractCegarLoop]: Abstraction has 17850 states and 25915 transitions. [2021-12-06 23:28:20,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 23:28:20,529 INFO L276 IsEmpty]: Start isEmpty. Operand 17850 states and 25915 transitions. [2021-12-06 23:28:20,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-06 23:28:20,532 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:28:20,532 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:28:20,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 23:28:20,532 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:28:20,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:28:20,532 INFO L85 PathProgramCache]: Analyzing trace with hash -178671597, now seen corresponding path program 1 times [2021-12-06 23:28:20,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:28:20,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390644064] [2021-12-06 23:28:20,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:28:20,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:28:20,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:20,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:28:20,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:20,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 23:28:20,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:20,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 23:28:20,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:20,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:28:20,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:20,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 23:28:20,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:20,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:28:20,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:21,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 23:28:21,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:21,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 23:28:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:21,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:28:21,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:21,500 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-06 23:28:21,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:28:21,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390644064] [2021-12-06 23:28:21,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390644064] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:28:21,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:28:21,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-06 23:28:21,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057729317] [2021-12-06 23:28:21,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:28:21,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 23:28:21,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:28:21,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 23:28:21,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2021-12-06 23:28:21,503 INFO L87 Difference]: Start difference. First operand 17850 states and 25915 transitions. Second operand has 15 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 23:28:23,542 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:28:44,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:28:44,919 INFO L93 Difference]: Finished difference Result 62102 states and 93157 transitions. [2021-12-06 23:28:44,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-06 23:28:44,920 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (10), 4 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 77 [2021-12-06 23:28:44,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:28:45,126 INFO L225 Difference]: With dead ends: 62102 [2021-12-06 23:28:45,126 INFO L226 Difference]: Without dead ends: 44267 [2021-12-06 23:28:45,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=155, Invalid=901, Unknown=0, NotChecked=0, Total=1056 [2021-12-06 23:28:45,172 INFO L933 BasicCegarLoop]: 2087 mSDtfsCounter, 4827 mSDsluCounter, 20764 mSDsCounter, 0 mSdLazyCounter, 8141 mSolverCounterSat, 2427 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5216 SdHoareTripleChecker+Valid, 22851 SdHoareTripleChecker+Invalid, 10569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2427 IncrementalHoareTripleChecker+Valid, 8141 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:28:45,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5216 Valid, 22851 Invalid, 10569 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2427 Valid, 8141 Invalid, 1 Unknown, 0 Unchecked, 21.0s Time] [2021-12-06 23:28:45,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44267 states. [2021-12-06 23:28:46,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44267 to 31054. [2021-12-06 23:28:46,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31054 states, 21443 states have (on average 1.3643613300377746) internal successors, (29256), 22154 states have internal predecessors, (29256), 7932 states have call successors, (7932), 1674 states have call predecessors, (7932), 1678 states have return successors, (7954), 7813 states have call predecessors, (7954), 7912 states have call successors, (7954) [2021-12-06 23:28:46,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31054 states to 31054 states and 45142 transitions. [2021-12-06 23:28:46,298 INFO L78 Accepts]: Start accepts. Automaton has 31054 states and 45142 transitions. Word has length 77 [2021-12-06 23:28:46,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:28:46,299 INFO L470 AbstractCegarLoop]: Abstraction has 31054 states and 45142 transitions. [2021-12-06 23:28:46,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 23:28:46,299 INFO L276 IsEmpty]: Start isEmpty. Operand 31054 states and 45142 transitions. [2021-12-06 23:28:46,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-06 23:28:46,302 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:28:46,302 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:28:46,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 23:28:46,302 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:28:46,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:28:46,303 INFO L85 PathProgramCache]: Analyzing trace with hash -719494381, now seen corresponding path program 1 times [2021-12-06 23:28:46,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:28:46,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521060110] [2021-12-06 23:28:46,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:28:46,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:28:46,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:46,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:28:46,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:46,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 23:28:46,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:46,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 23:28:46,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:46,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:28:46,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:46,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 23:28:46,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:46,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:28:46,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:46,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 23:28:46,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:46,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 23:28:46,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:46,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:28:46,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:46,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 23:28:46,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:46,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 23:28:46,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:46,557 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-06 23:28:46,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:28:46,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521060110] [2021-12-06 23:28:46,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521060110] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:28:46,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:28:46,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 23:28:46,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947773142] [2021-12-06 23:28:46,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:28:46,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:28:46,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:28:46,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:28:46,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:28:46,559 INFO L87 Difference]: Start difference. First operand 31054 states and 45142 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 23:28:48,594 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:28:50,625 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:28:57,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:28:57,495 INFO L93 Difference]: Finished difference Result 72152 states and 107103 transitions. [2021-12-06 23:28:57,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:28:57,496 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 92 [2021-12-06 23:28:57,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:28:57,647 INFO L225 Difference]: With dead ends: 72152 [2021-12-06 23:28:57,647 INFO L226 Difference]: Without dead ends: 41113 [2021-12-06 23:28:57,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:28:57,723 INFO L933 BasicCegarLoop]: 3176 mSDtfsCounter, 2804 mSDsluCounter, 3269 mSDsCounter, 0 mSdLazyCounter, 1829 mSolverCounterSat, 1308 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3112 SdHoareTripleChecker+Valid, 6445 SdHoareTripleChecker+Invalid, 3139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1308 IncrementalHoareTripleChecker+Valid, 1829 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2021-12-06 23:28:57,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3112 Valid, 6445 Invalid, 3139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1308 Valid, 1829 Invalid, 2 Unknown, 0 Unchecked, 9.6s Time] [2021-12-06 23:28:57,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41113 states. [2021-12-06 23:28:58,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41113 to 31035. [2021-12-06 23:28:58,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31035 states, 21424 states have (on average 1.363937640029873) internal successors, (29221), 22137 states have internal predecessors, (29221), 7932 states have call successors, (7932), 1674 states have call predecessors, (7932), 1678 states have return successors, (7954), 7811 states have call predecessors, (7954), 7912 states have call successors, (7954) [2021-12-06 23:28:58,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31035 states to 31035 states and 45107 transitions. [2021-12-06 23:28:58,843 INFO L78 Accepts]: Start accepts. Automaton has 31035 states and 45107 transitions. Word has length 92 [2021-12-06 23:28:58,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:28:58,843 INFO L470 AbstractCegarLoop]: Abstraction has 31035 states and 45107 transitions. [2021-12-06 23:28:58,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 23:28:58,844 INFO L276 IsEmpty]: Start isEmpty. Operand 31035 states and 45107 transitions. [2021-12-06 23:28:58,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-06 23:28:58,847 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:28:58,847 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-12-06 23:28:58,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 23:28:58,847 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:28:58,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:28:58,847 INFO L85 PathProgramCache]: Analyzing trace with hash -351940990, now seen corresponding path program 1 times [2021-12-06 23:28:58,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:28:58,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788451807] [2021-12-06 23:28:58,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:28:58,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:28:59,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:59,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:28:59,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:59,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 23:28:59,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:59,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 23:28:59,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:59,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:28:59,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:59,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 23:28:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:59,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:28:59,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:59,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 23:28:59,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:59,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:28:59,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:59,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 23:28:59,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:59,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:28:59,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:59,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 23:28:59,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:59,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 23:28:59,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:59,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:28:59,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:28:59,968 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-06 23:28:59,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:28:59,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788451807] [2021-12-06 23:28:59,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788451807] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:28:59,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:28:59,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-12-06 23:28:59,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483357090] [2021-12-06 23:28:59,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:28:59,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 23:28:59,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:28:59,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 23:28:59,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2021-12-06 23:28:59,970 INFO L87 Difference]: Start difference. First operand 31035 states and 45107 transitions. Second operand has 17 states, 15 states have (on average 3.533333333333333) internal successors, (53), 12 states have internal predecessors, (53), 5 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-06 23:29:02,000 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:29:29,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:29:29,622 INFO L93 Difference]: Finished difference Result 92705 states and 138624 transitions. [2021-12-06 23:29:29,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-12-06 23:29:29,623 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.533333333333333) internal successors, (53), 12 states have internal predecessors, (53), 5 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 98 [2021-12-06 23:29:29,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:29:29,918 INFO L225 Difference]: With dead ends: 92705 [2021-12-06 23:29:29,919 INFO L226 Difference]: Without dead ends: 61685 [2021-12-06 23:29:29,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=193, Invalid=1367, Unknown=0, NotChecked=0, Total=1560 [2021-12-06 23:29:29,986 INFO L933 BasicCegarLoop]: 2139 mSDtfsCounter, 5040 mSDsluCounter, 24957 mSDsCounter, 0 mSdLazyCounter, 9547 mSolverCounterSat, 2521 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5418 SdHoareTripleChecker+Valid, 27096 SdHoareTripleChecker+Invalid, 12069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2521 IncrementalHoareTripleChecker+Valid, 9547 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.8s IncrementalHoareTripleChecker+Time [2021-12-06 23:29:29,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5418 Valid, 27096 Invalid, 12069 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2521 Valid, 9547 Invalid, 1 Unknown, 0 Unchecked, 25.8s Time] [2021-12-06 23:29:30,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61685 states. [2021-12-06 23:29:31,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61685 to 36590. [2021-12-06 23:29:31,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36590 states, 25259 states have (on average 1.3638307138049803) internal successors, (34449), 26101 states have internal predecessors, (34449), 9350 states have call successors, (9350), 1976 states have call predecessors, (9350), 1980 states have return successors, (9378), 9205 states have call predecessors, (9378), 9330 states have call successors, (9378) [2021-12-06 23:29:31,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36590 states to 36590 states and 53177 transitions. [2021-12-06 23:29:31,605 INFO L78 Accepts]: Start accepts. Automaton has 36590 states and 53177 transitions. Word has length 98 [2021-12-06 23:29:31,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:29:31,605 INFO L470 AbstractCegarLoop]: Abstraction has 36590 states and 53177 transitions. [2021-12-06 23:29:31,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.533333333333333) internal successors, (53), 12 states have internal predecessors, (53), 5 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-06 23:29:31,605 INFO L276 IsEmpty]: Start isEmpty. Operand 36590 states and 53177 transitions. [2021-12-06 23:29:31,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-06 23:29:31,610 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:29:31,610 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-12-06 23:29:31,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 23:29:31,610 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:29:31,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:29:31,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1252793173, now seen corresponding path program 1 times [2021-12-06 23:29:31,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:29:31,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111011411] [2021-12-06 23:29:31,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:29:31,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:29:31,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:29:32,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:29:32,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:29:32,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 23:29:32,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:29:32,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 23:29:32,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:29:32,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:29:32,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:29:32,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 23:29:32,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:29:32,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:29:32,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:29:32,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 23:29:32,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:29:32,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:29:32,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:29:32,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 23:29:32,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:29:32,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:29:32,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:29:32,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 23:29:32,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:29:32,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 23:29:32,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:29:32,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:29:32,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:29:32,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 23:29:32,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:29:32,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 23:29:32,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:29:32,646 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-06 23:29:32,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:29:32,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111011411] [2021-12-06 23:29:32,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111011411] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:29:32,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:29:32,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-12-06 23:29:32,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566729074] [2021-12-06 23:29:32,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:29:32,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 23:29:32,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:29:32,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 23:29:32,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2021-12-06 23:29:32,648 INFO L87 Difference]: Start difference. First operand 36590 states and 53177 transitions. Second operand has 17 states, 15 states have (on average 4.0) internal successors, (60), 12 states have internal predecessors, (60), 5 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2021-12-06 23:29:34,684 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:29:36,714 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:30:11,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:30:11,662 INFO L93 Difference]: Finished difference Result 79218 states and 117471 transitions. [2021-12-06 23:30:11,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-06 23:30:11,663 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 4.0) internal successors, (60), 12 states have internal predecessors, (60), 5 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) Word has length 110 [2021-12-06 23:30:11,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:30:11,804 INFO L225 Difference]: With dead ends: 79218 [2021-12-06 23:30:11,804 INFO L226 Difference]: Without dead ends: 42643 [2021-12-06 23:30:11,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=188, Invalid=1294, Unknown=0, NotChecked=0, Total=1482 [2021-12-06 23:30:11,872 INFO L933 BasicCegarLoop]: 3391 mSDtfsCounter, 3519 mSDsluCounter, 34349 mSDsCounter, 0 mSdLazyCounter, 12519 mSolverCounterSat, 1701 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3847 SdHoareTripleChecker+Valid, 37740 SdHoareTripleChecker+Invalid, 14222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1701 IncrementalHoareTripleChecker+Valid, 12519 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:30:11,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3847 Valid, 37740 Invalid, 14222 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1701 Valid, 12519 Invalid, 2 Unknown, 0 Unchecked, 35.1s Time] [2021-12-06 23:30:11,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42643 states. [2021-12-06 23:30:13,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42643 to 31925. [2021-12-06 23:30:13,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31925 states, 22014 states have (on average 1.364631598073953) internal successors, (30041), 22749 states have internal predecessors, (30041), 8183 states have call successors, (8183), 1722 states have call predecessors, (8183), 1727 states have return successors, (8213), 8062 states have call predecessors, (8213), 8171 states have call successors, (8213) [2021-12-06 23:30:13,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31925 states to 31925 states and 46437 transitions. [2021-12-06 23:30:13,490 INFO L78 Accepts]: Start accepts. Automaton has 31925 states and 46437 transitions. Word has length 110 [2021-12-06 23:30:13,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:30:13,490 INFO L470 AbstractCegarLoop]: Abstraction has 31925 states and 46437 transitions. [2021-12-06 23:30:13,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 4.0) internal successors, (60), 12 states have internal predecessors, (60), 5 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2021-12-06 23:30:13,491 INFO L276 IsEmpty]: Start isEmpty. Operand 31925 states and 46437 transitions. [2021-12-06 23:30:13,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-06 23:30:13,497 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:30:13,497 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:30:13,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 23:30:13,497 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:30:13,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:30:13,498 INFO L85 PathProgramCache]: Analyzing trace with hash 387765073, now seen corresponding path program 1 times [2021-12-06 23:30:13,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:30:13,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527544612] [2021-12-06 23:30:13,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:30:13,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:30:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:13,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:30:13,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:13,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 23:30:13,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:13,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 23:30:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:13,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:30:13,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:13,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 23:30:13,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:13,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:30:13,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:13,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 23:30:13,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:13,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 23:30:13,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:13,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:30:13,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:13,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 23:30:13,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:13,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 23:30:13,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:13,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 23:30:13,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:13,987 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-06 23:30:13,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:30:13,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527544612] [2021-12-06 23:30:13,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527544612] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:30:13,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:30:13,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 23:30:13,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094619061] [2021-12-06 23:30:13,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:30:13,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 23:30:13,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:30:13,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 23:30:13,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-06 23:30:13,989 INFO L87 Difference]: Start difference. First operand 31925 states and 46437 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 23:30:16,020 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:30:18,047 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:30:20,115 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:30:40,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:30:40,985 INFO L93 Difference]: Finished difference Result 69363 states and 103064 transitions. [2021-12-06 23:30:40,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 23:30:40,986 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), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 104 [2021-12-06 23:30:40,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:30:41,114 INFO L225 Difference]: With dead ends: 69363 [2021-12-06 23:30:41,114 INFO L226 Difference]: Without dead ends: 37453 [2021-12-06 23:30:41,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-12-06 23:30:41,179 INFO L933 BasicCegarLoop]: 1959 mSDtfsCounter, 3334 mSDsluCounter, 5069 mSDsCounter, 0 mSdLazyCounter, 7608 mSolverCounterSat, 1603 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3591 SdHoareTripleChecker+Valid, 7028 SdHoareTripleChecker+Invalid, 9214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1603 IncrementalHoareTripleChecker+Valid, 7608 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.8s IncrementalHoareTripleChecker+Time [2021-12-06 23:30:41,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3591 Valid, 7028 Invalid, 9214 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1603 Valid, 7608 Invalid, 3 Unknown, 0 Unchecked, 24.8s Time] [2021-12-06 23:30:41,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37453 states. [2021-12-06 23:30:42,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37453 to 25359. [2021-12-06 23:30:42,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25359 states, 17487 states have (on average 1.3640990450048607) internal successors, (23854), 18068 states have internal predecessors, (23854), 6495 states have call successors, (6495), 1374 states have call predecessors, (6495), 1376 states have return successors, (6518), 6399 states have call predecessors, (6518), 6485 states have call successors, (6518) [2021-12-06 23:30:42,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25359 states to 25359 states and 36867 transitions. [2021-12-06 23:30:42,551 INFO L78 Accepts]: Start accepts. Automaton has 25359 states and 36867 transitions. Word has length 104 [2021-12-06 23:30:42,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:30:42,551 INFO L470 AbstractCegarLoop]: Abstraction has 25359 states and 36867 transitions. [2021-12-06 23:30:42,551 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), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 23:30:42,551 INFO L276 IsEmpty]: Start isEmpty. Operand 25359 states and 36867 transitions. [2021-12-06 23:30:42,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-06 23:30:42,556 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:30:42,556 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-12-06 23:30:42,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 23:30:42,556 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:30:42,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:30:42,557 INFO L85 PathProgramCache]: Analyzing trace with hash -926455928, now seen corresponding path program 1 times [2021-12-06 23:30:42,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:30:42,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3437617] [2021-12-06 23:30:42,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:30:42,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:30:42,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:42,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:30:42,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:42,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 23:30:42,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:42,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 23:30:42,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:42,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:30:42,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:42,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 23:30:42,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:42,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:30:42,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:42,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 23:30:42,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:42,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 23:30:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:42,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:30:42,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:42,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 23:30:42,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:43,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 23:30:43,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:43,026 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-12-06 23:30:43,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:30:43,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3437617] [2021-12-06 23:30:43,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3437617] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:30:43,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222385583] [2021-12-06 23:30:43,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:30:43,027 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:30:43,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:30:43,028 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:30:43,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 23:30:43,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:43,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 2419 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-06 23:30:43,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:30:43,899 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-06 23:30:43,900 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:30:43,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222385583] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:30:43,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:30:43,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2021-12-06 23:30:43,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350306638] [2021-12-06 23:30:43,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:30:43,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:30:43,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:30:43,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:30:43,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-12-06 23:30:43,901 INFO L87 Difference]: Start difference. First operand 25359 states and 36867 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 23:30:44,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:30:44,956 INFO L93 Difference]: Finished difference Result 26500 states and 38677 transitions. [2021-12-06 23:30:44,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:30:44,956 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 104 [2021-12-06 23:30:44,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:30:45,009 INFO L225 Difference]: With dead ends: 26500 [2021-12-06 23:30:45,009 INFO L226 Difference]: Without dead ends: 15499 [2021-12-06 23:30:45,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2021-12-06 23:30:45,027 INFO L933 BasicCegarLoop]: 2110 mSDtfsCounter, 1467 mSDsluCounter, 7846 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 407 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1527 SdHoareTripleChecker+Valid, 9956 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 407 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:30:45,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1527 Valid, 9956 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [407 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 23:30:45,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15499 states. [2021-12-06 23:30:45,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15499 to 14418. [2021-12-06 23:30:45,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14418 states, 9947 states have (on average 1.3618176334573238) internal successors, (13546), 10275 states have internal predecessors, (13546), 3682 states have call successors, (3682), 787 states have call predecessors, (3682), 788 states have return successors, (3692), 3628 states have call predecessors, (3692), 3674 states have call successors, (3692) [2021-12-06 23:30:45,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14418 states to 14418 states and 20920 transitions. [2021-12-06 23:30:45,750 INFO L78 Accepts]: Start accepts. Automaton has 14418 states and 20920 transitions. Word has length 104 [2021-12-06 23:30:45,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:30:45,750 INFO L470 AbstractCegarLoop]: Abstraction has 14418 states and 20920 transitions. [2021-12-06 23:30:45,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 23:30:45,750 INFO L276 IsEmpty]: Start isEmpty. Operand 14418 states and 20920 transitions. [2021-12-06 23:30:45,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-06 23:30:45,754 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:30:45,754 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-12-06 23:30:45,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 23:30:45,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-06 23:30:45,955 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:30:45,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:30:45,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1718379708, now seen corresponding path program 1 times [2021-12-06 23:30:45,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:30:45,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445660158] [2021-12-06 23:30:45,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:30:45,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:30:46,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:46,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:30:46,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:46,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 23:30:46,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:46,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 23:30:46,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:46,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:30:46,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:46,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 23:30:46,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:46,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:30:46,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:46,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 23:30:46,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:46,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 23:30:46,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:46,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:30:46,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:46,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 23:30:46,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:46,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 23:30:46,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:30:46,401 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-12-06 23:30:46,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:30:46,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445660158] [2021-12-06 23:30:46,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445660158] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:30:46,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:30:46,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 23:30:46,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560872118] [2021-12-06 23:30:46,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:30:46,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 23:30:46,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:30:46,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 23:30:46,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-06 23:30:46,403 INFO L87 Difference]: Start difference. First operand 14418 states and 20920 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 9 states have internal predecessors, (67), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-06 23:30:48,439 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:30:50,489 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:31:02,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:31:02,598 INFO L93 Difference]: Finished difference Result 20096 states and 30411 transitions. [2021-12-06 23:31:02,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 23:31:02,599 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), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 107 [2021-12-06 23:31:02,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:31:02,648 INFO L225 Difference]: With dead ends: 20096 [2021-12-06 23:31:02,648 INFO L226 Difference]: Without dead ends: 15705 [2021-12-06 23:31:02,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2021-12-06 23:31:02,663 INFO L933 BasicCegarLoop]: 2173 mSDtfsCounter, 2435 mSDsluCounter, 14699 mSDsCounter, 0 mSdLazyCounter, 4563 mSolverCounterSat, 1066 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2607 SdHoareTripleChecker+Valid, 16872 SdHoareTripleChecker+Invalid, 5631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1066 IncrementalHoareTripleChecker+Valid, 4563 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2021-12-06 23:31:02,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2607 Valid, 16872 Invalid, 5631 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1066 Valid, 4563 Invalid, 2 Unknown, 0 Unchecked, 14.9s Time] [2021-12-06 23:31:02,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15705 states. [2021-12-06 23:31:03,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15705 to 10054. [2021-12-06 23:31:03,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10054 states, 6939 states have (on average 1.3594177835422971) internal successors, (9433), 7168 states have internal predecessors, (9433), 2561 states have call successors, (2561), 553 states have call predecessors, (2561), 553 states have return successors, (2565), 2521 states have call predecessors, (2565), 2553 states have call successors, (2565) [2021-12-06 23:31:03,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10054 states to 10054 states and 14559 transitions. [2021-12-06 23:31:03,235 INFO L78 Accepts]: Start accepts. Automaton has 10054 states and 14559 transitions. Word has length 107 [2021-12-06 23:31:03,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:31:03,236 INFO L470 AbstractCegarLoop]: Abstraction has 10054 states and 14559 transitions. [2021-12-06 23:31:03,236 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), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-06 23:31:03,236 INFO L276 IsEmpty]: Start isEmpty. Operand 10054 states and 14559 transitions. [2021-12-06 23:31:03,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-06 23:31:03,240 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:31:03,240 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-12-06 23:31:03,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 23:31:03,240 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:31:03,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:31:03,240 INFO L85 PathProgramCache]: Analyzing trace with hash -374227482, now seen corresponding path program 1 times [2021-12-06 23:31:03,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:31:03,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528787393] [2021-12-06 23:31:03,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:31:03,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:31:03,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:03,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:31:03,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:03,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 23:31:03,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:03,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 23:31:03,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:03,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:31:03,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:03,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 23:31:03,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:03,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:31:03,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:03,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 23:31:03,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:03,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 23:31:03,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:03,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:31:03,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:03,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 23:31:03,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:03,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 23:31:03,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:03,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 23:31:03,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:03,611 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-06 23:31:03,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:31:03,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528787393] [2021-12-06 23:31:03,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528787393] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:31:03,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:31:03,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 23:31:03,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632721409] [2021-12-06 23:31:03,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:31:03,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 23:31:03,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:31:03,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 23:31:03,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:31:03,613 INFO L87 Difference]: Start difference. First operand 10054 states and 14559 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 23:31:05,650 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:31:14,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:31:14,524 INFO L93 Difference]: Finished difference Result 23326 states and 34515 transitions. [2021-12-06 23:31:14,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:31:14,525 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 110 [2021-12-06 23:31:14,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:31:14,563 INFO L225 Difference]: With dead ends: 23326 [2021-12-06 23:31:14,563 INFO L226 Difference]: Without dead ends: 13287 [2021-12-06 23:31:14,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-12-06 23:31:14,581 INFO L933 BasicCegarLoop]: 2009 mSDtfsCounter, 2104 mSDsluCounter, 7737 mSDsCounter, 0 mSdLazyCounter, 3026 mSolverCounterSat, 915 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2198 SdHoareTripleChecker+Valid, 9746 SdHoareTripleChecker+Invalid, 3942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 915 IncrementalHoareTripleChecker+Valid, 3026 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2021-12-06 23:31:14,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2198 Valid, 9746 Invalid, 3942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [915 Valid, 3026 Invalid, 1 Unknown, 0 Unchecked, 9.9s Time] [2021-12-06 23:31:14,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13287 states. [2021-12-06 23:31:15,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13287 to 10036. [2021-12-06 23:31:15,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10036 states, 6927 states have (on average 1.3594629709831096) internal successors, (9417), 7156 states have internal predecessors, (9417), 2557 states have call successors, (2557), 549 states have call predecessors, (2557), 551 states have return successors, (2561), 2519 states have call predecessors, (2561), 2549 states have call successors, (2561) [2021-12-06 23:31:15,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10036 states to 10036 states and 14535 transitions. [2021-12-06 23:31:15,091 INFO L78 Accepts]: Start accepts. Automaton has 10036 states and 14535 transitions. Word has length 110 [2021-12-06 23:31:15,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:31:15,092 INFO L470 AbstractCegarLoop]: Abstraction has 10036 states and 14535 transitions. [2021-12-06 23:31:15,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 23:31:15,092 INFO L276 IsEmpty]: Start isEmpty. Operand 10036 states and 14535 transitions. [2021-12-06 23:31:15,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-06 23:31:15,096 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:31:15,096 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-12-06 23:31:15,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 23:31:15,096 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:31:15,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:31:15,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1883275383, now seen corresponding path program 1 times [2021-12-06 23:31:15,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:31:15,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713498951] [2021-12-06 23:31:15,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:31:15,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:31:15,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:15,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:31:15,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:15,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 23:31:15,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:15,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 23:31:15,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:15,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:31:15,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:15,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 23:31:15,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:15,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:31:15,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:15,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 23:31:15,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:15,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 23:31:15,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:15,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:31:15,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:15,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 23:31:15,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:15,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 23:31:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:15,377 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-06 23:31:15,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:31:15,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713498951] [2021-12-06 23:31:15,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713498951] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:31:15,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:31:15,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:31:15,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343236784] [2021-12-06 23:31:15,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:31:15,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:31:15,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:31:15,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:31:15,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:31:15,379 INFO L87 Difference]: Start difference. First operand 10036 states and 14535 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-06 23:31:17,405 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:31:24,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:31:24,423 INFO L93 Difference]: Finished difference Result 19047 states and 28022 transitions. [2021-12-06 23:31:24,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 23:31:24,424 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 109 [2021-12-06 23:31:24,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:31:24,452 INFO L225 Difference]: With dead ends: 19047 [2021-12-06 23:31:24,452 INFO L226 Difference]: Without dead ends: 9026 [2021-12-06 23:31:24,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:31:24,471 INFO L933 BasicCegarLoop]: 1863 mSDtfsCounter, 2893 mSDsluCounter, 4583 mSDsCounter, 0 mSdLazyCounter, 2173 mSolverCounterSat, 976 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3126 SdHoareTripleChecker+Valid, 6446 SdHoareTripleChecker+Invalid, 3150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 976 IncrementalHoareTripleChecker+Valid, 2173 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:31:24,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3126 Valid, 6446 Invalid, 3150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [976 Valid, 2173 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2021-12-06 23:31:24,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9026 states. [2021-12-06 23:31:24,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9026 to 6856. [2021-12-06 23:31:24,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6856 states, 4731 states have (on average 1.352568167406468) internal successors, (6399), 4888 states have internal predecessors, (6399), 1735 states have call successors, (1735), 387 states have call predecessors, (1735), 389 states have return successors, (1733), 1706 states have call predecessors, (1733), 1727 states have call successors, (1733) [2021-12-06 23:31:24,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6856 states to 6856 states and 9867 transitions. [2021-12-06 23:31:24,874 INFO L78 Accepts]: Start accepts. Automaton has 6856 states and 9867 transitions. Word has length 109 [2021-12-06 23:31:24,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:31:24,874 INFO L470 AbstractCegarLoop]: Abstraction has 6856 states and 9867 transitions. [2021-12-06 23:31:24,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-06 23:31:24,875 INFO L276 IsEmpty]: Start isEmpty. Operand 6856 states and 9867 transitions. [2021-12-06 23:31:24,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-06 23:31:24,878 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:31:24,878 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 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] [2021-12-06 23:31:24,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 23:31:24,879 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:31:24,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:31:24,879 INFO L85 PathProgramCache]: Analyzing trace with hash 605469970, now seen corresponding path program 1 times [2021-12-06 23:31:24,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:31:24,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554590924] [2021-12-06 23:31:24,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:31:24,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:31:24,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:25,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:31:25,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:25,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 23:31:25,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:25,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 23:31:25,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:25,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:31:25,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:25,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 23:31:25,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:25,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:31:25,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:25,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 23:31:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:25,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:31:25,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:25,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 23:31:25,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:25,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:31:25,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:25,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 23:31:25,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:25,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 23:31:25,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:25,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:31:25,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:25,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 23:31:25,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:25,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 23:31:25,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:25,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 23:31:25,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:25,979 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-12-06 23:31:25,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:31:25,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554590924] [2021-12-06 23:31:25,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554590924] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:31:25,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272550154] [2021-12-06 23:31:25,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:31:25,979 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:31:25,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:31:25,980 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:31:25,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 23:31:29,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:29,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 2456 conjuncts, 45 conjunts are in the unsatisfiable core [2021-12-06 23:31:29,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:31:30,656 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-12-06 23:31:30,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:31:30,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272550154] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:31:30,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:31:30,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [16] total 20 [2021-12-06 23:31:30,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613039182] [2021-12-06 23:31:30,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:31:30,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 23:31:30,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:31:30,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 23:31:30,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2021-12-06 23:31:30,658 INFO L87 Difference]: Start difference. First operand 6856 states and 9867 transitions. Second operand has 14 states, 12 states have (on average 5.833333333333333) internal successors, (70), 11 states have internal predecessors, (70), 5 states have call successors, (18), 2 states have call predecessors, (18), 6 states have return successors, (16), 7 states have call predecessors, (16), 5 states have call successors, (16) [2021-12-06 23:31:31,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:31:31,753 INFO L93 Difference]: Finished difference Result 10402 states and 14924 transitions. [2021-12-06 23:31:31,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 23:31:31,753 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 5.833333333333333) internal successors, (70), 11 states have internal predecessors, (70), 5 states have call successors, (18), 2 states have call predecessors, (18), 6 states have return successors, (16), 7 states have call predecessors, (16), 5 states have call successors, (16) Word has length 119 [2021-12-06 23:31:31,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:31:31,764 INFO L225 Difference]: With dead ends: 10402 [2021-12-06 23:31:31,764 INFO L226 Difference]: Without dead ends: 4621 [2021-12-06 23:31:31,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 140 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2021-12-06 23:31:31,775 INFO L933 BasicCegarLoop]: 1971 mSDtfsCounter, 227 mSDsluCounter, 19381 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 21352 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 23:31:31,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 21352 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 23:31:31,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4621 states. [2021-12-06 23:31:32,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4621 to 4611. [2021-12-06 23:31:32,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4611 states, 3186 states have (on average 1.3487131198995606) internal successors, (4297), 3288 states have internal predecessors, (4297), 1162 states have call successors, (1162), 263 states have call predecessors, (1162), 262 states have return successors, (1158), 1143 states have call predecessors, (1158), 1155 states have call successors, (1158) [2021-12-06 23:31:32,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4611 states to 4611 states and 6617 transitions. [2021-12-06 23:31:32,028 INFO L78 Accepts]: Start accepts. Automaton has 4611 states and 6617 transitions. Word has length 119 [2021-12-06 23:31:32,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:31:32,029 INFO L470 AbstractCegarLoop]: Abstraction has 4611 states and 6617 transitions. [2021-12-06 23:31:32,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 5.833333333333333) internal successors, (70), 11 states have internal predecessors, (70), 5 states have call successors, (18), 2 states have call predecessors, (18), 6 states have return successors, (16), 7 states have call predecessors, (16), 5 states have call successors, (16) [2021-12-06 23:31:32,029 INFO L276 IsEmpty]: Start isEmpty. Operand 4611 states and 6617 transitions. [2021-12-06 23:31:32,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-06 23:31:32,032 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:31:32,032 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-12-06 23:31:32,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-06 23:31:32,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-06 23:31:32,234 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:31:32,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:31:32,235 INFO L85 PathProgramCache]: Analyzing trace with hash -2061167594, now seen corresponding path program 1 times [2021-12-06 23:31:32,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:31:32,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293999392] [2021-12-06 23:31:32,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:31:32,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:31:32,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:32,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:31:32,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:32,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 23:31:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:32,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 23:31:32,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:32,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:31:32,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:32,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 23:31:32,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:32,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:31:32,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:32,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 23:31:32,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:32,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 23:31:32,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:32,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:31:32,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:32,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 23:31:32,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:32,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 23:31:32,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:32,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 23:31:32,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:32,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 23:31:32,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:32,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 23:31:32,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:32,497 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-06 23:31:32,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:31:32,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293999392] [2021-12-06 23:31:32,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293999392] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:31:32,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:31:32,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 23:31:32,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940275029] [2021-12-06 23:31:32,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:31:32,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:31:32,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:31:32,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:31:32,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:31:32,499 INFO L87 Difference]: Start difference. First operand 4611 states and 6617 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 23:31:34,525 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:31:36,529 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:31:38,563 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:31:52,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:31:52,660 INFO L93 Difference]: Finished difference Result 6055 states and 9035 transitions. [2021-12-06 23:31:52,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 23:31:52,661 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 120 [2021-12-06 23:31:52,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:31:52,677 INFO L225 Difference]: With dead ends: 6055 [2021-12-06 23:31:52,677 INFO L226 Difference]: Without dead ends: 6052 [2021-12-06 23:31:52,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-12-06 23:31:52,679 INFO L933 BasicCegarLoop]: 2725 mSDtfsCounter, 3879 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 4435 mSolverCounterSat, 2676 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4136 SdHoareTripleChecker+Valid, 4129 SdHoareTripleChecker+Invalid, 7114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2676 IncrementalHoareTripleChecker+Valid, 4435 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.4s IncrementalHoareTripleChecker+Time [2021-12-06 23:31:52,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4136 Valid, 4129 Invalid, 7114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2676 Valid, 4435 Invalid, 3 Unknown, 0 Unchecked, 19.4s Time] [2021-12-06 23:31:52,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6052 states. [2021-12-06 23:31:52,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6052 to 4610. [2021-12-06 23:31:52,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4610 states, 3186 states have (on average 1.3477715003138733) internal successors, (4294), 3287 states have internal predecessors, (4294), 1161 states have call successors, (1161), 263 states have call predecessors, (1161), 262 states have return successors, (1158), 1143 states have call predecessors, (1158), 1155 states have call successors, (1158) [2021-12-06 23:31:52,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4610 states to 4610 states and 6613 transitions. [2021-12-06 23:31:52,948 INFO L78 Accepts]: Start accepts. Automaton has 4610 states and 6613 transitions. Word has length 120 [2021-12-06 23:31:52,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:31:52,949 INFO L470 AbstractCegarLoop]: Abstraction has 4610 states and 6613 transitions. [2021-12-06 23:31:52,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 23:31:52,949 INFO L276 IsEmpty]: Start isEmpty. Operand 4610 states and 6613 transitions. [2021-12-06 23:31:52,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-06 23:31:52,952 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:31:52,953 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 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] [2021-12-06 23:31:52,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 23:31:52,953 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:31:52,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:31:52,953 INFO L85 PathProgramCache]: Analyzing trace with hash -230154401, now seen corresponding path program 1 times [2021-12-06 23:31:52,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:31:52,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486409186] [2021-12-06 23:31:52,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:31:52,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:31:53,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:53,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:31:53,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:53,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 23:31:53,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:53,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 23:31:53,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:53,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:31:53,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:53,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 23:31:53,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:53,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:31:53,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:53,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 23:31:53,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:53,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 23:31:53,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:53,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:31:53,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:53,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 23:31:53,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:53,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 23:31:53,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:53,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 23:31:53,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:53,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 23:31:53,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:53,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 23:31:53,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:53,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 23:31:53,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:31:53,349 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-12-06 23:31:53,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:31:53,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486409186] [2021-12-06 23:31:53,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486409186] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:31:53,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:31:53,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 23:31:53,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367649640] [2021-12-06 23:31:53,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:31:53,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 23:31:53,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:31:53,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 23:31:53,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:31:53,351 INFO L87 Difference]: Start difference. First operand 4610 states and 6613 transitions. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 8 states have internal predecessors, (72), 3 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-06 23:31:55,396 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:31:57,434 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:31:59,450 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:32:20,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:32:20,800 INFO L93 Difference]: Finished difference Result 6712 states and 9712 transitions. [2021-12-06 23:32:20,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 23:32:20,801 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 8 states have internal predecessors, (72), 3 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 124 [2021-12-06 23:32:20,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:32:20,809 INFO L225 Difference]: With dead ends: 6712 [2021-12-06 23:32:20,809 INFO L226 Difference]: Without dead ends: 3085 [2021-12-06 23:32:20,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2021-12-06 23:32:20,815 INFO L933 BasicCegarLoop]: 1457 mSDtfsCounter, 2303 mSDsluCounter, 4085 mSDsCounter, 0 mSdLazyCounter, 8869 mSolverCounterSat, 1433 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2492 SdHoareTripleChecker+Valid, 5542 SdHoareTripleChecker+Invalid, 10305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1433 IncrementalHoareTripleChecker+Valid, 8869 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.6s IncrementalHoareTripleChecker+Time [2021-12-06 23:32:20,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2492 Valid, 5542 Invalid, 10305 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1433 Valid, 8869 Invalid, 3 Unknown, 0 Unchecked, 26.6s Time] [2021-12-06 23:32:20,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3085 states. [2021-12-06 23:32:20,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3085 to 2316. [2021-12-06 23:32:20,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2316 states, 1597 states have (on average 1.3462742642454602) internal successors, (2150), 1648 states have internal predecessors, (2150), 586 states have call successors, (586), 133 states have call predecessors, (586), 132 states have return successors, (582), 576 states have call predecessors, (582), 582 states have call successors, (582) [2021-12-06 23:32:20,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2316 states to 2316 states and 3318 transitions. [2021-12-06 23:32:20,951 INFO L78 Accepts]: Start accepts. Automaton has 2316 states and 3318 transitions. Word has length 124 [2021-12-06 23:32:20,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:32:20,951 INFO L470 AbstractCegarLoop]: Abstraction has 2316 states and 3318 transitions. [2021-12-06 23:32:20,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 8 states have internal predecessors, (72), 3 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-06 23:32:20,952 INFO L276 IsEmpty]: Start isEmpty. Operand 2316 states and 3318 transitions. [2021-12-06 23:32:20,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-06 23:32:20,955 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:32:20,955 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:32:20,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 23:32:20,955 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:32:20,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:32:20,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1418200633, now seen corresponding path program 1 times [2021-12-06 23:32:20,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:32:20,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113504337] [2021-12-06 23:32:20,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:32:20,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:32:21,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:32:21,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:32:21,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:32:21,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 23:32:21,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:32:21,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 23:32:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:32:21,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:32:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:32:21,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 23:32:21,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:32:21,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:32:21,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:32:21,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 23:32:21,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:32:21,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 23:32:21,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:32:21,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:32:21,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:32:21,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 23:32:21,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:32:21,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 23:32:21,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:32:21,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 23:32:21,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:32:21,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 23:32:21,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:32:21,159 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-12-06 23:32:21,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:32:21,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113504337] [2021-12-06 23:32:21,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113504337] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:32:21,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:32:21,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 23:32:21,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024750122] [2021-12-06 23:32:21,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:32:21,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:32:21,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:32:21,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:32:21,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:32:21,160 INFO L87 Difference]: Start difference. First operand 2316 states and 3318 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-06 23:32:23,186 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:32:25,226 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:32:31,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:32:31,388 INFO L93 Difference]: Finished difference Result 4149 states and 6139 transitions. [2021-12-06 23:32:31,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:32:31,388 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 130 [2021-12-06 23:32:31,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:32:31,396 INFO L225 Difference]: With dead ends: 4149 [2021-12-06 23:32:31,397 INFO L226 Difference]: Without dead ends: 3010 [2021-12-06 23:32:31,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:32:31,399 INFO L933 BasicCegarLoop]: 3010 mSDtfsCounter, 2760 mSDsluCounter, 3100 mSDsCounter, 0 mSdLazyCounter, 1783 mSolverCounterSat, 1316 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3067 SdHoareTripleChecker+Valid, 6110 SdHoareTripleChecker+Invalid, 3101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1316 IncrementalHoareTripleChecker+Valid, 1783 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2021-12-06 23:32:31,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3067 Valid, 6110 Invalid, 3101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1316 Valid, 1783 Invalid, 2 Unknown, 0 Unchecked, 9.8s Time] [2021-12-06 23:32:31,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3010 states. [2021-12-06 23:32:31,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3010 to 2288. [2021-12-06 23:32:31,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2288 states, 1580 states have (on average 1.3474683544303798) internal successors, (2129), 1629 states have internal predecessors, (2129), 579 states have call successors, (579), 129 states have call predecessors, (579), 128 states have return successors, (577), 571 states have call predecessors, (577), 577 states have call successors, (577) [2021-12-06 23:32:31,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2288 states to 2288 states and 3285 transitions. [2021-12-06 23:32:31,548 INFO L78 Accepts]: Start accepts. Automaton has 2288 states and 3285 transitions. Word has length 130 [2021-12-06 23:32:31,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:32:31,548 INFO L470 AbstractCegarLoop]: Abstraction has 2288 states and 3285 transitions. [2021-12-06 23:32:31,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-06 23:32:31,549 INFO L276 IsEmpty]: Start isEmpty. Operand 2288 states and 3285 transitions. [2021-12-06 23:32:31,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-06 23:32:31,552 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:32:31,552 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:32:31,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 23:32:31,552 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:32:31,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:32:31,553 INFO L85 PathProgramCache]: Analyzing trace with hash 890655371, now seen corresponding path program 1 times [2021-12-06 23:32:31,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:32:31,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923291073] [2021-12-06 23:32:31,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:32:31,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:32:31,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:32:31,654 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 23:32:31,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:32:31,866 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 23:32:31,866 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 23:32:31,867 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 23:32:31,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 23:32:31,871 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:32:31,873 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 23:32:32,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 11:32:32 BoogieIcfgContainer [2021-12-06 23:32:32,106 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 23:32:32,107 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 23:32:32,107 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 23:32:32,107 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 23:32:32,107 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:27:40" (3/4) ... [2021-12-06 23:32:32,110 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-06 23:32:32,110 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 23:32:32,111 INFO L158 Benchmark]: Toolchain (without parser) took 308213.49ms. Allocated memory was 119.5MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 87.8MB in the beginning and 316.3MB in the end (delta: -228.5MB). Peak memory consumption was 949.0MB. Max. memory is 16.1GB. [2021-12-06 23:32:32,111 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 73.4MB. Free memory was 43.1MB in the beginning and 43.0MB in the end (delta: 49.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 23:32:32,111 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1202.55ms. Allocated memory is still 119.5MB. Free memory was 87.5MB in the beginning and 57.0MB in the end (delta: 30.5MB). Peak memory consumption was 63.7MB. Max. memory is 16.1GB. [2021-12-06 23:32:32,112 INFO L158 Benchmark]: Boogie Procedure Inliner took 159.81ms. Allocated memory was 119.5MB in the beginning and 151.0MB in the end (delta: 31.5MB). Free memory was 57.0MB in the beginning and 98.5MB in the end (delta: -41.5MB). Peak memory consumption was 31.8MB. Max. memory is 16.1GB. [2021-12-06 23:32:32,112 INFO L158 Benchmark]: Boogie Preprocessor took 145.64ms. Allocated memory is still 151.0MB. Free memory was 98.5MB in the beginning and 77.1MB in the end (delta: 21.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-12-06 23:32:32,112 INFO L158 Benchmark]: RCFGBuilder took 15392.09ms. Allocated memory was 151.0MB in the beginning and 1.1GB in the end (delta: 926.9MB). Free memory was 77.1MB in the beginning and 991.2MB in the end (delta: -914.1MB). Peak memory consumption was 646.3MB. Max. memory is 16.1GB. [2021-12-06 23:32:32,113 INFO L158 Benchmark]: TraceAbstraction took 291305.22ms. Allocated memory was 1.1GB in the beginning and 1.3GB in the end (delta: 216.0MB). Free memory was 990.1MB in the beginning and 316.3MB in the end (delta: 673.8MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2021-12-06 23:32:32,113 INFO L158 Benchmark]: Witness Printer took 3.46ms. Allocated memory is still 1.3GB. Free memory is still 316.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 23:32:32,115 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 73.4MB. Free memory was 43.1MB in the beginning and 43.0MB in the end (delta: 49.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1202.55ms. Allocated memory is still 119.5MB. Free memory was 87.5MB in the beginning and 57.0MB in the end (delta: 30.5MB). Peak memory consumption was 63.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 159.81ms. Allocated memory was 119.5MB in the beginning and 151.0MB in the end (delta: 31.5MB). Free memory was 57.0MB in the beginning and 98.5MB in the end (delta: -41.5MB). Peak memory consumption was 31.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 145.64ms. Allocated memory is still 151.0MB. Free memory was 98.5MB in the beginning and 77.1MB in the end (delta: 21.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * RCFGBuilder took 15392.09ms. Allocated memory was 151.0MB in the beginning and 1.1GB in the end (delta: 926.9MB). Free memory was 77.1MB in the beginning and 991.2MB in the end (delta: -914.1MB). Peak memory consumption was 646.3MB. Max. memory is 16.1GB. * TraceAbstraction took 291305.22ms. Allocated memory was 1.1GB in the beginning and 1.3GB in the end (delta: 216.0MB). Free memory was 990.1MB in the beginning and 316.3MB in the end (delta: 673.8MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. * Witness Printer took 3.46ms. Allocated memory is still 1.3GB. Free memory is still 316.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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: 3238]: 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 5432. Possible FailurePath: [L3261] int LDV_IN_INTERRUPT = 1; [L3262] int ldv_state_variable_2 ; [L3263] int ref_cnt ; [L3264] int ldv_state_variable_1 ; [L3265] struct file *printer_io_operations_group2 ; [L3266] struct inode *printer_io_operations_group1 ; [L3267] int ldv_state_variable_0 ; [L3268] struct usb_gadget *printer_driver_group0 ; [L3752] static unsigned int epnum ; [L3924-L3927] static struct mutex printer_mutex = {{1}, {{{{0U}, 3735899821U, 4294967295U, (void *)-1, {0, 0, "printer_mutex.wait_lock", 0, 0UL}}}}, {& printer_mutex.wait_list, & printer_mutex.wait_list}, 0, 0, (void *)(& printer_mutex), {0, 0, "printer_mutex", 0, 0UL}}; [L3928-L3930] static char const shortname[8U] = { 'p', 'r', 'i', 'n', 't', 'e', 'r', '\000'}; [L3931-L3935] static char const driver_desc[15U] = { 'P', 'r', 'i', 'n', 't', 'e', 'r', ' ', 'G', 'a', 'd', 'g', 'e', 't', '\000'}; [L3936] static dev_t g_printer_devno ; [L3937] static struct class *usb_gadget_class ; [L3938] static struct printer_dev usb_printer_gadget ; [L3939] static ushort idVendor ; [L3940] static ushort idProduct ; [L3941] static ushort bcdDevice ; [L3942] static char *iManufacturer ; [L3943] static char *iProduct ; [L3944] static char *iSerialNum ; [L3945] static char *iPNPstring ; [L3946] static unsigned int qlen = 10U; [L3947-L3949] static struct usb_device_descriptor device_desc = {18U, 1U, 512U, 0U, 0U, 0U, (unsigned char)0, 1317U, 42152U, (unsigned short)0, 1U, 2U, 3U, 1U}; [L3950] static struct usb_otg_descriptor otg_desc = {3U, 9U, 1U}; [L3951-L3952] static struct usb_config_descriptor config_desc = {9U, 2U, (unsigned short)0, 1U, 1U, 0U, 192U, 1U}; [L3953-L3954] static struct usb_interface_descriptor intf_desc = {9U, 4U, 0U, (unsigned char)0, 2U, 7U, 1U, 2U, 0U}; [L3955-L3956] static struct usb_endpoint_descriptor fs_ep_in_desc = {7U, 5U, 128U, 2U, (unsigned short)0, (unsigned char)0, (unsigned char)0, (unsigned char)0}; [L3957-L3958] static struct usb_endpoint_descriptor fs_ep_out_desc = {7U, 5U, 0U, 2U, (unsigned short)0, (unsigned char)0, (unsigned char)0, (unsigned char)0}; [L3959-L3960] static struct usb_descriptor_header const *fs_printer_function[11U] = { (struct usb_descriptor_header const *)(& otg_desc), (struct usb_descriptor_header const *)(& intf_desc), (struct usb_descriptor_header const *)(& fs_ep_in_desc), (struct usb_descriptor_header const *)(& fs_ep_out_desc), (struct usb_descriptor_header const *)0}; [L3961-L3962] static struct usb_endpoint_descriptor hs_ep_in_desc = {7U, 5U, (unsigned char)0, 2U, 512U, (unsigned char)0, (unsigned char)0, (unsigned char)0}; [L3963-L3964] static struct usb_endpoint_descriptor hs_ep_out_desc = {7U, 5U, (unsigned char)0, 2U, 512U, (unsigned char)0, (unsigned char)0, (unsigned char)0}; [L3965-L3966] static struct usb_qualifier_descriptor dev_qualifier = {10U, 6U, 512U, 7U, (unsigned char)0, (unsigned char)0, (unsigned char)0, 1U, (unsigned char)0}; [L3967-L3968] static struct usb_descriptor_header const *hs_printer_function[11U] = { (struct usb_descriptor_header const *)(& otg_desc), (struct usb_descriptor_header const *)(& intf_desc), (struct usb_descriptor_header const *)(& hs_ep_in_desc), (struct usb_descriptor_header const *)(& hs_ep_out_desc), (struct usb_descriptor_header const *)0}; [L3969] static char manufacturer[50U] ; [L3970-L3974] static char product_desc[40U] = { 'P', 'r', 'i', 'n', 't', 'e', 'r', ' ', 'G', 'a', 'd', 'g', 'e', 't', '\000'}; [L3975] static char serial_num[40U] = { '1', '\000'}; [L3976-L3987] static char pnp_string[1024U] = { 'X', 'X', 'M', 'F', 'G', ':', 'l', 'i', 'n', 'u', 'x', ';', 'M', 'D', 'L', ':', 'g', '_', 'p', 'r', 'i', 'n', 't', 'e', 'r', ';', 'C', 'L', 'S', ':', 'P', 'R', 'I', 'N', 'T', 'E', 'R', ';', 'S', 'N', ':', '1', ';', '\000'}; [L3988-L3990] static struct usb_string strings[4U] = { {1U, (char const *)(& manufacturer)}, {2U, (char const *)(& product_desc)}, {3U, (char const *)(& serial_num)}}; [L3991] static struct usb_gadget_strings stringtab = {1033U, (struct usb_string *)(& strings)}; [L4632-L4635] static struct file_operations const printer_io_operations = {& __this_module, 0, & printer_read, & printer_write, 0, 0, 0, & printer_poll, & printer_ioctl, 0, 0, & printer_open, 0, & printer_close, & printer_fsync, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; [L5410-L5413] static struct usb_gadget_driver printer_driver = {(char *)(& driver_desc), 3, & printer_bind, & printer_unbind, & printer_setup, & printer_disconnect, 0, 0, {(char const *)(& shortname), 0, & __this_module, 0, (_Bool)0, 0, 0, 0, 0, 0, 0, 0, 0}}; [L5465] int ldv_retval_0 ; [L5466] int ldv_retval_1 ; [L5469] int ldv_retval_3 ; [L5470] int ldv_retval_2 ; [L5894] int ldv_usb_gadget_class = 0; [L5895] int ldv_usb_gadget_chrdev = 0; [L5896] int ldv_usb_gadget = 0; VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=0, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5494] struct usb_ctrlrequest *ldvarg0 ; [L5495] void *tmp ; [L5496] char *ldvarg7 ; [L5497] void *tmp___0 ; [L5498] struct poll_table_struct *ldvarg3 ; [L5499] void *tmp___1 ; [L5500] loff_t *ldvarg5 ; [L5501] void *tmp___2 ; [L5502] size_t ldvarg6 ; [L5503] size_t tmp___3 ; [L5504] unsigned long ldvarg1 ; [L5505] unsigned long tmp___4 ; [L5506] loff_t *ldvarg8 ; [L5507] void *tmp___5 ; [L5508] int ldvarg4 ; [L5509] int tmp___6 ; [L5510] char *ldvarg10 ; [L5511] void *tmp___7 ; [L5512] size_t ldvarg9 ; [L5513] size_t tmp___8 ; [L5514] unsigned int ldvarg2 ; [L5515] unsigned int tmp___9 ; [L5516] int tmp___10 ; [L5517] int tmp___11 ; [L5518] int tmp___12 ; [L5519] int tmp___13 ; VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=0, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5521] CALL, EXPR ldv_zalloc(8UL) VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=0, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L3202] void *p ; [L3203] void *tmp ; [L3204] int tmp___0 ; [L3206] tmp___0 = __VERIFIER_nondet_int() [L3207] COND TRUE tmp___0 != 0 [L3208] return ((void *)0); VAL [\old(size)=8, \result={0:0}, __this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=0, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, size=8, strings={121:0}, stringtab={122:0}, tmp___0=1, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5521] RET, EXPR ldv_zalloc(8UL) VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=0, ldv_zalloc(8UL)={0:0}, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5521] tmp = ldv_zalloc(8UL) [L5522] ldvarg0 = (struct usb_ctrlrequest *)tmp VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=0, ldvarg0={0:0}, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, tmp={0:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5523] CALL, EXPR ldv_zalloc(1UL) VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=0, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L3202] void *p ; [L3203] void *tmp ; [L3204] int tmp___0 ; [L3206] tmp___0 = __VERIFIER_nondet_int() [L3207] COND TRUE tmp___0 != 0 [L3208] return ((void *)0); VAL [\old(size)=1, \result={0:0}, __this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=0, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, size=1, strings={121:0}, stringtab={122:0}, tmp___0=1, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5523] RET, EXPR ldv_zalloc(1UL) VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=0, ldv_zalloc(1UL)={0:0}, ldvarg0={0:0}, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, tmp={0:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5523] tmp___0 = ldv_zalloc(1UL) [L5524] ldvarg7 = (char *)tmp___0 VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=0, ldvarg0={0:0}, ldvarg7={0:0}, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, tmp={0:0}, tmp___0={0:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5525] CALL, EXPR ldv_zalloc(16UL) VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=0, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L3202] void *p ; [L3203] void *tmp ; [L3204] int tmp___0 ; [L3206] tmp___0 = __VERIFIER_nondet_int() [L3207] COND TRUE tmp___0 != 0 [L3208] return ((void *)0); VAL [\old(size)=16, \result={0:0}, __this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=0, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, size=16, strings={121:0}, stringtab={122:0}, tmp___0=1, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5525] RET, EXPR ldv_zalloc(16UL) VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=0, ldv_zalloc(16UL)={0:0}, ldvarg0={0:0}, ldvarg7={0:0}, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, tmp={0:0}, tmp___0={0:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5525] tmp___1 = ldv_zalloc(16UL) [L5526] ldvarg3 = (struct poll_table_struct *)tmp___1 VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=0, ldvarg0={0:0}, ldvarg3={0:0}, ldvarg7={0:0}, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, tmp={0:0}, tmp___0={0:0}, tmp___1={0:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5527] CALL, EXPR ldv_zalloc(8UL) VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=0, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L3202] void *p ; [L3203] void *tmp ; [L3204] int tmp___0 ; [L3206] tmp___0 = __VERIFIER_nondet_int() [L3207] COND TRUE tmp___0 != 0 [L3208] return ((void *)0); VAL [\old(size)=8, \result={0:0}, __this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=0, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, size=8, strings={121:0}, stringtab={122:0}, tmp___0=1, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5527] RET, EXPR ldv_zalloc(8UL) VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=0, ldv_zalloc(8UL)={0:0}, ldvarg0={0:0}, ldvarg3={0:0}, ldvarg7={0:0}, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, tmp={0:0}, tmp___0={0:0}, tmp___1={0:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5527] tmp___2 = ldv_zalloc(8UL) [L5528] ldvarg5 = (loff_t *)tmp___2 [L5529] tmp___3 = __VERIFIER_nondet_size_t() [L5530] ldvarg6 = tmp___3 [L5531] tmp___4 = __VERIFIER_nondet_ulong() [L5532] ldvarg1 = tmp___4 VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=0, ldvarg0={0:0}, ldvarg1=4294967327, ldvarg3={0:0}, ldvarg5={0:0}, ldvarg6=0, ldvarg7={0:0}, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, tmp={0:0}, tmp___0={0:0}, tmp___1={0:0}, tmp___2={0:0}, tmp___3=0, tmp___4=4294967327, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5533] CALL, EXPR ldv_zalloc(8UL) VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=0, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L3202] void *p ; [L3203] void *tmp ; [L3204] int tmp___0 ; [L3206] tmp___0 = __VERIFIER_nondet_int() [L3207] COND TRUE tmp___0 != 0 [L3208] return ((void *)0); VAL [\old(size)=8, \result={0:0}, __this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=0, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, size=8, strings={121:0}, stringtab={122:0}, tmp___0=1, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5533] RET, EXPR ldv_zalloc(8UL) VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=0, ldv_zalloc(8UL)={0:0}, ldvarg0={0:0}, ldvarg1=4294967327, ldvarg3={0:0}, ldvarg5={0:0}, ldvarg6=0, ldvarg7={0:0}, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, tmp={0:0}, tmp___0={0:0}, tmp___1={0:0}, tmp___2={0:0}, tmp___3=0, tmp___4=4294967327, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5533] tmp___5 = ldv_zalloc(8UL) [L5534] ldvarg8 = (loff_t *)tmp___5 [L5535] tmp___6 = __VERIFIER_nondet_int() [L5536] ldvarg4 = tmp___6 VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=0, ldvarg0={0:0}, ldvarg1=4294967327, ldvarg3={0:0}, ldvarg4=-2, ldvarg5={0:0}, ldvarg6=0, ldvarg7={0:0}, ldvarg8={0:0}, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, tmp={0:0}, tmp___0={0:0}, tmp___1={0:0}, tmp___2={0:0}, tmp___3=0, tmp___4=4294967327, tmp___5={0:0}, tmp___6=-2, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5537] CALL, EXPR ldv_zalloc(1UL) VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=0, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L3202] void *p ; [L3203] void *tmp ; [L3204] int tmp___0 ; [L3206] tmp___0 = __VERIFIER_nondet_int() [L3207] COND TRUE tmp___0 != 0 [L3208] return ((void *)0); VAL [\old(size)=1, \result={0:0}, __this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=0, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, size=1, strings={121:0}, stringtab={122:0}, tmp___0=1, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5537] RET, EXPR ldv_zalloc(1UL) VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=0, ldv_zalloc(1UL)={0:0}, ldvarg0={0:0}, ldvarg1=4294967327, ldvarg3={0:0}, ldvarg4=-2, ldvarg5={0:0}, ldvarg6=0, ldvarg7={0:0}, ldvarg8={0:0}, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, tmp={0:0}, tmp___0={0:0}, tmp___1={0:0}, tmp___2={0:0}, tmp___3=0, tmp___4=4294967327, tmp___5={0:0}, tmp___6=-2, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5537] tmp___7 = ldv_zalloc(1UL) [L5538] ldvarg10 = (char *)tmp___7 [L5539] tmp___8 = __VERIFIER_nondet_size_t() [L5540] ldvarg9 = tmp___8 [L5541] tmp___9 = __VERIFIER_nondet_uint() [L5542] ldvarg2 = tmp___9 [L5543] FCALL ldv_initialize() [L5544] ldv_state_variable_1 = 0 [L5545] ref_cnt = 0 [L5546] ldv_state_variable_0 = 1 [L5547] ldv_state_variable_2 = 0 VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=0, ldvarg0={0:0}, ldvarg1=4294967327, ldvarg10={0:0}, ldvarg2=32, ldvarg3={0:0}, ldvarg4=-2, ldvarg5={0:0}, ldvarg6=0, ldvarg7={0:0}, ldvarg8={0:0}, ldvarg9=18446744073709551613, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, tmp={0:0}, tmp___0={0:0}, tmp___1={0:0}, tmp___2={0:0}, tmp___3=0, tmp___4=4294967327, tmp___5={0:0}, tmp___6=-2, tmp___7={0:0}, tmp___8=18446744073709551613, tmp___9=32, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5549] tmp___10 = __VERIFIER_nondet_int() [L5551] case 0: [L5598] case 1: VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=0, ldvarg0={0:0}, ldvarg1=4294967327, ldvarg10={0:0}, ldvarg2=32, ldvarg3={0:0}, ldvarg4=-2, ldvarg5={0:0}, ldvarg6=0, ldvarg7={0:0}, ldvarg8={0:0}, ldvarg9=18446744073709551613, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, tmp={0:0}, tmp___0={0:0}, tmp___1={0:0}, tmp___10=1, tmp___2={0:0}, tmp___3=0, tmp___4=4294967327, tmp___5={0:0}, tmp___6=-2, tmp___7={0:0}, tmp___8=18446744073709551613, tmp___9=32, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5599] COND TRUE ldv_state_variable_0 != 0 [L5600] tmp___12 = __VERIFIER_nondet_int() [L5602] case 0: [L5610] case 1: VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=0, ldvarg0={0:0}, ldvarg1=4294967327, ldvarg10={0:0}, ldvarg2=32, ldvarg3={0:0}, ldvarg4=-2, ldvarg5={0:0}, ldvarg6=0, ldvarg7={0:0}, ldvarg8={0:0}, ldvarg9=18446744073709551613, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, tmp={0:0}, tmp___0={0:0}, tmp___1={0:0}, tmp___10=1, tmp___12=1, tmp___2={0:0}, tmp___3=0, tmp___4=4294967327, tmp___5={0:0}, tmp___6=-2, tmp___7={0:0}, tmp___8=18446744073709551613, tmp___9=32, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5611] COND TRUE ldv_state_variable_0 == 1 [L5612] CALL, EXPR init() [L5416] int status ; [L5417] void *tmp ; [L5418] long tmp___0 ; [L5419] long tmp___1 ; [L5421] CALL, EXPR ldv_create_class() [L5899] void *is_got ; VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=0, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5901] CALL, EXPR ldv_malloc(sizeof(struct class)) VAL [\old(size)=120, __this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=0, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L3184] void *p ; [L3185] void *tmp ; [L3186] int tmp___0 ; [L3188] tmp___0 = __VERIFIER_nondet_int() [L3189] COND TRUE tmp___0 != 0 [L3190] return ((void *)0); VAL [\old(size)=120, \result={0:0}, __this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=0, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, size=120, strings={121:0}, stringtab={122:0}, tmp___0=1, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5901] RET, EXPR ldv_malloc(sizeof(struct class)) VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_malloc(sizeof(struct class))={0:0}, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=0, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5901] is_got = ldv_malloc(sizeof(struct class)) [L5902] COND TRUE (unsigned long )is_got <= 2012UL VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, is_got={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=0, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5903] COND TRUE ldv_usb_gadget == 0 VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, is_got={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=0, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5907] COND TRUE ldv_usb_gadget_class == 0 VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, is_got={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=0, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5911] ldv_usb_gadget_class = 1 VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, is_got={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5914] return (is_got); VAL [\result={0:0}, __this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, is_got={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5421] RET, EXPR ldv_create_class() [L5421] tmp = ldv_create_class() [L5422] usb_gadget_class = (struct class *)tmp VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, tmp={0:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5423] CALL, EXPR IS_ERR((void const *)usb_gadget_class) VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, ptr={0:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5736] long tmp ; VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, ptr={0:0}, ptr={0:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5738] CALL, EXPR ldv_is_err(ptr) VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, ptr={0:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5861] return ((unsigned long )ptr > 2012UL); VAL [\result=0, __this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, ptr={0:0}, ptr={0:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5738] RET, EXPR ldv_is_err(ptr) VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_is_err(ptr)=0, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, ptr={0:0}, ptr={0:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5738] tmp = ldv_is_err(ptr) [L5739] return (tmp); VAL [\result=0, __this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, ptr={0:0}, ptr={0:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, tmp=0, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5423] RET, EXPR IS_ERR((void const *)usb_gadget_class) VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, IS_ERR((void const *)usb_gadget_class)=0, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, tmp={0:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5423] tmp___1 = IS_ERR((void const *)usb_gadget_class) [L5424] COND FALSE !(tmp___1 != 0L) [L5432] CALL, EXPR ldv_alloc_chrdev_region_7(& g_printer_devno, 0U, 1U, "USB printer gadget") [L5762] ldv_func_ret_type ldv_func_res ; [L5763] int tmp ; [L5764] int tmp___0 ; [L5766] CALL, EXPR alloc_chrdev_region(ldv_func_arg1, ldv_func_arg2, ldv_func_arg3, ldv_func_arg4) [L6074] return __VERIFIER_nondet_int(); [L5766] RET, EXPR alloc_chrdev_region(ldv_func_arg1, ldv_func_arg2, ldv_func_arg3, ldv_func_arg4) [L5766] tmp = alloc_chrdev_region(ldv_func_arg1, ldv_func_arg2, ldv_func_arg3, ldv_func_arg4) [L5767] ldv_func_res = tmp [L5768] CALL, EXPR ldv_register_chrdev_region() [L5954] int is_reg ; VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5956] CALL, EXPR ldv_undef_int_nonpositive() VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5846] int ret ; [L5847] int tmp ; [L5849] CALL, EXPR ldv_undef_int() [L3220] int tmp ; [L3222] tmp = __VERIFIER_nondet_int() [L3223] return (tmp); VAL [\result=0, __this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, tmp=0, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5849] RET, EXPR ldv_undef_int() [L5849] tmp = ldv_undef_int() [L5850] ret = tmp VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, ret=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, tmp=0, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5851] COND TRUE ret <= 0 VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, ret=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, tmp=0, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5855] return (ret); VAL [\result=0, __this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, ret=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, tmp=0, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5956] RET, EXPR ldv_undef_int_nonpositive() VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_undef_int_nonpositive()=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5956] is_reg = ldv_undef_int_nonpositive() [L5957] COND TRUE ! is_reg VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, is_reg=0, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5958] COND TRUE ldv_usb_gadget == 0 VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, is_reg=0, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5962] COND TRUE ldv_usb_gadget_chrdev == 0 VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, is_reg=0, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=0, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5966] ldv_usb_gadget_chrdev = 1 VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, is_reg=0, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=1, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5969] return (is_reg); VAL [\result=0, __this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, is_reg=0, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=1, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5768] RET, EXPR ldv_register_chrdev_region() [L5768] tmp___0 = ldv_register_chrdev_region() [L5769] return (tmp___0); VAL [\old(ldv_func_arg2)=0, \old(ldv_func_arg3)=1, \result=0, __this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, ldv_func_arg1={104:0}, ldv_func_arg1={104:0}, ldv_func_arg2=0, ldv_func_arg3=1, ldv_func_arg4={94:0}, ldv_func_arg4={94:0}, ldv_func_res=-4, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=1, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, tmp=-4, tmp___0=0, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5432] RET, EXPR ldv_alloc_chrdev_region_7(& g_printer_devno, 0U, 1U, "USB printer gadget") [L5432] status = ldv_alloc_chrdev_region_7(& g_printer_devno, 0U, 1U, "USB printer gadget") [L5433] COND FALSE !(status != 0) [L5439] CALL, EXPR ldv_usb_gadget_register_driver_9(& printer_driver) [L5783] ldv_func_ret_type___0 ldv_func_res ; [L5784] int tmp ; [L5785] int tmp___0 ; [L5787] CALL, EXPR usb_gadget_register_driver(ldv_func_arg1) [L6157] return __VERIFIER_nondet_int(); [L5787] RET, EXPR usb_gadget_register_driver(ldv_func_arg1) [L5787] tmp = usb_gadget_register_driver(ldv_func_arg1) [L5788] ldv_func_res = tmp [L5789] CALL, EXPR ldv_register_usb_gadget() [L5989] int is_reg ; VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=1, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5991] CALL, EXPR ldv_undef_int_nonpositive() VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=1, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5846] int ret ; [L5847] int tmp ; [L5849] CALL, EXPR ldv_undef_int() [L3220] int tmp ; [L3222] tmp = __VERIFIER_nondet_int() [L3223] return (tmp); VAL [\result=0, __this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=1, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, tmp=0, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5849] RET, EXPR ldv_undef_int() [L5849] tmp = ldv_undef_int() [L5850] ret = tmp VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=1, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, ret=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, tmp=0, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5851] COND TRUE ret <= 0 VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=1, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, ret=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, tmp=0, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5855] return (ret); VAL [\result=0, __this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=1, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, ret=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, tmp=0, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5991] RET, EXPR ldv_undef_int_nonpositive() VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_undef_int_nonpositive()=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=1, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5991] is_reg = ldv_undef_int_nonpositive() [L5992] COND TRUE ! is_reg VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, is_reg=0, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=1, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5993] COND TRUE ldv_usb_gadget == 0 VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, is_reg=0, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=0, ldv_usb_gadget_chrdev=1, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5997] ldv_usb_gadget = 1 VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, is_reg=0, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=1, ldv_usb_gadget_chrdev=1, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L6000] return (is_reg); VAL [\result=0, __this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, is_reg=0, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=1, ldv_usb_gadget_chrdev=1, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5789] RET, EXPR ldv_register_usb_gadget() [L5789] tmp___0 = ldv_register_usb_gadget() [L5790] return (tmp___0); VAL [\result=0, __this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, ldv_func_arg1={124:0}, ldv_func_arg1={124:0}, ldv_func_res=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=1, ldv_usb_gadget_chrdev=1, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, tmp=0, tmp___0=0, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5439] RET, EXPR ldv_usb_gadget_register_driver_9(& printer_driver) [L5439] status = ldv_usb_gadget_register_driver_9(& printer_driver) [L5440] COND FALSE !(status != 0) VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=1, ldv_usb_gadget_chrdev=1, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, status=0, strings={121:0}, stringtab={122:0}, tmp={0:0}, tmp___1=0, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5446] return (status); VAL [\result=0, __this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=1, ldv_usb_gadget_chrdev=1, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, status=0, strings={121:0}, stringtab={122:0}, tmp={0:0}, tmp___1=0, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5612] RET, EXPR init() [L5612] ldv_retval_2 = init() [L5613] COND FALSE !(ldv_retval_2 != 0) VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_usb_gadget=1, ldv_usb_gadget_chrdev=1, ldv_usb_gadget_class=1, ldvarg0={0:0}, ldvarg1=4294967327, ldvarg10={0:0}, ldvarg2=32, ldvarg3={0:0}, ldvarg4=-2, ldvarg5={0:0}, ldvarg6=0, ldvarg7={0:0}, ldvarg8={0:0}, ldvarg9=18446744073709551613, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, tmp={0:0}, tmp___0={0:0}, tmp___1={0:0}, tmp___10=1, tmp___12=1, tmp___2={0:0}, tmp___3=0, tmp___4=4294967327, tmp___5={0:0}, tmp___6=-2, tmp___7={0:0}, tmp___8=18446744073709551613, tmp___9=32, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5618] COND TRUE ldv_retval_2 == 0 [L5619] ldv_state_variable_0 = 2 [L5620] ldv_state_variable_1 = 1 [L5621] CALL ldv_initialize_usb_gadget_driver_1() [L5473] void *tmp ; VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=2, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_usb_gadget=1, ldv_usb_gadget_chrdev=1, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5475] CALL, EXPR ldv_zalloc(1072UL) VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=2, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_usb_gadget=1, ldv_usb_gadget_chrdev=1, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L3202] void *p ; [L3203] void *tmp ; [L3204] int tmp___0 ; [L3206] tmp___0 = __VERIFIER_nondet_int() [L3207] COND TRUE tmp___0 != 0 [L3208] return ((void *)0); VAL [\old(size)=1072, \result={0:0}, __this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=2, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_usb_gadget=1, ldv_usb_gadget_chrdev=1, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, size=1072, strings={121:0}, stringtab={122:0}, tmp___0=1, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5475] RET, EXPR ldv_zalloc(1072UL) VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=2, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_usb_gadget=1, ldv_usb_gadget_chrdev=1, ldv_usb_gadget_class=1, ldv_zalloc(1072UL)={0:0}, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5475] tmp = ldv_zalloc(1072UL) [L5476] printer_driver_group0 = (struct usb_gadget *)tmp VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=2, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_usb_gadget=1, ldv_usb_gadget_chrdev=1, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, tmp={0:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5621] RET ldv_initialize_usb_gadget_driver_1() [L5549] tmp___10 = __VERIFIER_nondet_int() [L5551] case 0: [L5598] case 1: VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=2, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_usb_gadget=1, ldv_usb_gadget_chrdev=1, ldv_usb_gadget_class=1, ldvarg0={0:0}, ldvarg1=4294967327, ldvarg10={0:0}, ldvarg2=32, ldvarg3={0:0}, ldvarg4=-2, ldvarg5={0:0}, ldvarg6=0, ldvarg7={0:0}, ldvarg8={0:0}, ldvarg9=18446744073709551613, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, tmp={0:0}, tmp___0={0:0}, tmp___1={0:0}, tmp___10=1, tmp___12=1, tmp___2={0:0}, tmp___3=0, tmp___4=4294967327, tmp___5={0:0}, tmp___6=-2, tmp___7={0:0}, tmp___8=18446744073709551613, tmp___9=32, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5599] COND TRUE ldv_state_variable_0 != 0 [L5600] tmp___12 = __VERIFIER_nondet_int() [L5602] case 0: VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=2, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_usb_gadget=1, ldv_usb_gadget_chrdev=1, ldv_usb_gadget_class=1, ldvarg0={0:0}, ldvarg1=4294967327, ldvarg10={0:0}, ldvarg2=32, ldvarg3={0:0}, ldvarg4=-2, ldvarg5={0:0}, ldvarg6=0, ldvarg7={0:0}, ldvarg8={0:0}, ldvarg9=18446744073709551613, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, tmp={0:0}, tmp___0={0:0}, tmp___1={0:0}, tmp___10=1, tmp___12=0, tmp___2={0:0}, tmp___3=0, tmp___4=4294967327, tmp___5={0:0}, tmp___6=-2, tmp___7={0:0}, tmp___8=18446744073709551613, tmp___9=32, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5603] COND TRUE ldv_state_variable_0 == 2 && ref_cnt == 0 [L5604] CALL cleanup() [L5451] int status ; VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=2, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_usb_gadget=1, ldv_usb_gadget_chrdev=1, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5453] FCALL mutex_lock_nested(& usb_printer_gadget.lock_printer_io, 0U) VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=2, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_usb_gadget=1, ldv_usb_gadget_chrdev=1, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5454] CALL ldv_class_destroy_12(usb_gadget_class) [L5813] FCALL class_destroy(ldv_func_arg1) VAL [__this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, ldv_func_arg1={0:0}, ldv_func_arg1={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=2, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_usb_gadget=1, ldv_usb_gadget_chrdev=1, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5814] CALL ldv_unregister_class() VAL [\old(ldv_usb_gadget_class)=1, __this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=2, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_usb_gadget=1, ldv_usb_gadget_chrdev=1, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5940] COND FALSE !(ldv_usb_gadget == 0) VAL [\old(ldv_usb_gadget_class)=1, __this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=2, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_usb_gadget=1, ldv_usb_gadget_chrdev=1, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L5942] CALL ldv_error() VAL [\old(ldv_usb_gadget_class)=1, __this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=2, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_usb_gadget=1, ldv_usb_gadget_chrdev=1, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] [L3238] reach_error() VAL [\old(ldv_usb_gadget_class)=1, __this_module={4294967389:4294967374}, bcdDevice=0, config_desc={108:0}, dev_qualifier={115:0}, device_desc={106:0}, driver_desc={103:0}, epnum=0, fs_ep_in_desc={110:0}, fs_ep_out_desc={111:0}, fs_printer_function={112:0}, g_printer_devno={104:0}, hs_ep_in_desc={113:0}, hs_ep_out_desc={114:0}, hs_printer_function={116:0}, idProduct=0, idVendor=0, iManufacturer={0:0}, intf_desc={109:0}, iPNPstring={0:0}, iProduct={0:0}, iSerialNum={0:0}, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_retval_2=0, ldv_retval_3=0, ldv_state_variable_0=2, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_usb_gadget=1, ldv_usb_gadget_chrdev=1, ldv_usb_gadget_class=1, manufacturer={117:0}, otg_desc={107:0}, pnp_string={120:0}, printer_driver={124:0}, printer_driver_group0={0:0}, printer_io_operations={123:0}, printer_io_operations_group1={0:0}, printer_io_operations_group2={0:0}, printer_mutex={101:0}, product_desc={118:0}, qlen=10, ref_cnt=0, serial_num={119:0}, shortname={102:0}, strings={121:0}, stringtab={122:0}, usb_gadget_class={0:0}, usb_printer_gadget={105:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 68 procedures, 1276 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 291.0s, OverallIterations: 18, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 264.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 27 mSolverCounterUnknown, 54342 SdHoareTripleChecker+Valid, 240.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 50078 mSDsluCounter, 199482 SdHoareTripleChecker+Invalid, 219.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 161577 mSDsCounter, 23495 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 71872 IncrementalHoareTripleChecker+Invalid, 95394 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23495 mSolverCounterUnsat, 37905 mSDtfsCounter, 71872 mSolverCounterSat, 1.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 871 GetRequests, 619 SyntacticMatches, 4 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 846 ImplicationChecksByTransitivity, 10.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36590occurred in iteration=7, InterpolantAutomatonStates: 217, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 11.1s AutomataMinimizationTime, 17 MinimizatonAttempts, 95699 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 4.6s SatisfiabilityAnalysisTime, 8.2s InterpolantComputationTime, 2006 NumberOfCodeBlocks, 2006 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 1855 ConstructedInterpolants, 0 QuantifiedInterpolants, 4453 SizeOfPredicates, 21 NumberOfNonLiveVariables, 4875 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 19 InterpolantComputations, 17 PerfectInterpolantSequences, 1352/1361 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 [2021-12-06 23:32:32,245 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa --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 e3555fedd9f92961bad45780711b37c7eb42c00277e0bac6769cfc03eaec14a8 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 23:32:33,707 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 23:32:33,709 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 23:32:33,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 23:32:33,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 23:32:33,731 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 23:32:33,733 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 23:32:33,734 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 23:32:33,736 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 23:32:33,736 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 23:32:33,737 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 23:32:33,738 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 23:32:33,738 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 23:32:33,739 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 23:32:33,740 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 23:32:33,742 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 23:32:33,742 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 23:32:33,743 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 23:32:33,745 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 23:32:33,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 23:32:33,748 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 23:32:33,749 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 23:32:33,750 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 23:32:33,751 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 23:32:33,753 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 23:32:33,754 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 23:32:33,754 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 23:32:33,755 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 23:32:33,755 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 23:32:33,756 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 23:32:33,756 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 23:32:33,757 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 23:32:33,757 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 23:32:33,758 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 23:32:33,759 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 23:32:33,759 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 23:32:33,771 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 23:32:33,771 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 23:32:33,772 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 23:32:33,773 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 23:32:33,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 23:32:33,774 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-12-06 23:32:33,798 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 23:32:33,798 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 23:32:33,798 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 23:32:33,798 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 23:32:33,799 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 23:32:33,799 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 23:32:33,800 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 23:32:33,800 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 23:32:33,800 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 23:32:33,800 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 23:32:33,800 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 23:32:33,800 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 23:32:33,800 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 23:32:33,801 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 23:32:33,801 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 23:32:33,801 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-06 23:32:33,801 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-06 23:32:33,801 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 23:32:33,801 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 23:32:33,801 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 23:32:33,801 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 23:32:33,802 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 23:32:33,802 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 23:32:33,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:32:33,802 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 23:32:33,802 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 23:32:33,802 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 23:32:33,802 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-06 23:32:33,802 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-06 23:32:33,803 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 23:32:33,803 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 23:32:33,803 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 23:32:33,803 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 23:32:33,803 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-06 23:32:33,803 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_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3555fedd9f92961bad45780711b37c7eb42c00277e0bac6769cfc03eaec14a8 [2021-12-06 23:32:34,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 23:32:34,048 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 23:32:34,050 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 23:32:34,051 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 23:32:34,052 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 23:32:34,053 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i [2021-12-06 23:32:34,099 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/data/eb692a40d/8bad34d3cc5d4f8aa8ca1655138283a9/FLAG4f958cb48 [2021-12-06 23:32:34,697 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 23:32:34,698 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i [2021-12-06 23:32:34,719 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/data/eb692a40d/8bad34d3cc5d4f8aa8ca1655138283a9/FLAG4f958cb48 [2021-12-06 23:32:35,078 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/data/eb692a40d/8bad34d3cc5d4f8aa8ca1655138283a9 [2021-12-06 23:32:35,081 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 23:32:35,083 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 23:32:35,084 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 23:32:35,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 23:32:35,088 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 23:32:35,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:32:35" (1/1) ... [2021-12-06 23:32:35,090 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a8e7f51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:32:35, skipping insertion in model container [2021-12-06 23:32:35,090 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:32:35" (1/1) ... [2021-12-06 23:32:35,096 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 23:32:35,166 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:32:35,637 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_565fba6f-596b-4c33-8664-6395f16431e8/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i[88044,88057] [2021-12-06 23:32:35,783 WARN L564 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-12-06 23:32:36,035 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:32:36,072 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-06 23:32:36,100 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:32:36,151 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_565fba6f-596b-4c33-8664-6395f16431e8/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i[88044,88057] [2021-12-06 23:32:36,279 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:32:36,301 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 23:32:36,363 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_565fba6f-596b-4c33-8664-6395f16431e8/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i[88044,88057] [2021-12-06 23:32:36,462 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:32:36,518 INFO L208 MainTranslator]: Completed translation [2021-12-06 23:32:36,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:32:36 WrapperNode [2021-12-06 23:32:36,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 23:32:36,519 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 23:32:36,520 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 23:32:36,520 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 23:32:36,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:32:36" (1/1) ... [2021-12-06 23:32:36,585 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:32:36" (1/1) ... [2021-12-06 23:32:36,692 INFO L137 Inliner]: procedures = 219, calls = 1278, calls flagged for inlining = 89, calls inlined = 89, statements flattened = 3416 [2021-12-06 23:32:36,693 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 23:32:36,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 23:32:36,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 23:32:36,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 23:32:36,700 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:32:36" (1/1) ... [2021-12-06 23:32:36,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:32:36" (1/1) ... [2021-12-06 23:32:36,722 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:32:36" (1/1) ... [2021-12-06 23:32:36,722 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:32:36" (1/1) ... [2021-12-06 23:32:36,783 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:32:36" (1/1) ... [2021-12-06 23:32:36,799 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:32:36" (1/1) ... [2021-12-06 23:32:36,813 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:32:36" (1/1) ... [2021-12-06 23:32:36,865 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 23:32:36,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 23:32:36,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 23:32:36,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 23:32:36,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:32:36" (1/1) ... [2021-12-06 23:32:36,875 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:32:36,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:32:36,897 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 23:32:36,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 23:32:36,949 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_free [2021-12-06 23:32:36,949 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_free [2021-12-06 23:32:36,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_nonpositive [2021-12-06 23:32:36,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_nonpositive [2021-12-06 23:32:36,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-06 23:32:36,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-12-06 23:32:36,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-06 23:32:36,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-06 23:32:36,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-12-06 23:32:36,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-06 23:32:36,950 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-06 23:32:36,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-06 23:32:36,950 INFO L130 BoogieDeclarations]: Found specification of procedure get_gadget_data [2021-12-06 23:32:36,951 INFO L138 BoogieDeclarations]: Found implementation of procedure get_gadget_data [2021-12-06 23:32:36,951 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_free_request [2021-12-06 23:32:36,951 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_free_request [2021-12-06 23:32:36,951 INFO L130 BoogieDeclarations]: Found specification of procedure printer_reset_interface [2021-12-06 23:32:36,951 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_reset_interface [2021-12-06 23:32:36,951 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-06 23:32:36,951 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-06 23:32:36,952 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-06 23:32:36,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-06 23:32:36,952 INFO L130 BoogieDeclarations]: Found specification of procedure printer_soft_reset [2021-12-06 23:32:36,952 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_soft_reset [2021-12-06 23:32:36,952 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_class [2021-12-06 23:32:36,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_class [2021-12-06 23:32:36,952 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2021-12-06 23:32:36,953 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2021-12-06 23:32:36,953 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rx_reqs [2021-12-06 23:32:36,953 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rx_reqs [2021-12-06 23:32:36,953 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-06 23:32:36,953 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-06 23:32:36,953 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-06 23:32:36,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-06 23:32:36,954 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_vbus_draw [2021-12-06 23:32:36,954 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_vbus_draw [2021-12-06 23:32:36,954 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 23:32:36,954 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 23:32:36,954 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-06 23:32:36,954 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-06 23:32:36,954 INFO L130 BoogieDeclarations]: Found specification of procedure poll_wait [2021-12-06 23:32:36,955 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_wait [2021-12-06 23:32:36,955 INFO L130 BoogieDeclarations]: Found specification of procedure printer_fsync [2021-12-06 23:32:36,955 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_fsync [2021-12-06 23:32:36,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 23:32:36,955 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-06 23:32:36,955 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-06 23:32:36,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 23:32:36,956 INFO L130 BoogieDeclarations]: Found specification of procedure printer_open [2021-12-06 23:32:36,956 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_open [2021-12-06 23:32:36,956 INFO L130 BoogieDeclarations]: Found specification of procedure printer_bind [2021-12-06 23:32:36,956 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_bind [2021-12-06 23:32:36,956 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-12-06 23:32:36,956 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-12-06 23:32:36,956 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-06 23:32:36,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-06 23:32:36,957 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2021-12-06 23:32:36,957 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2021-12-06 23:32:36,957 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-06 23:32:36,957 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-06 23:32:36,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-12-06 23:32:36,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-12-06 23:32:36,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-12-06 23:32:36,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 23:32:36,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-06 23:32:36,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 23:32:36,958 INFO L130 BoogieDeclarations]: Found specification of procedure trace_kmalloc [2021-12-06 23:32:36,958 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_kmalloc [2021-12-06 23:32:36,958 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-06 23:32:36,959 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-06 23:32:36,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-12-06 23:32:36,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-06 23:32:36,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-12-06 23:32:36,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-12-06 23:32:36,959 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-12-06 23:32:36,959 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-12-06 23:32:36,959 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2021-12-06 23:32:36,960 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2021-12-06 23:32:36,960 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-06 23:32:36,960 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-06 23:32:36,960 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-06 23:32:36,960 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-06 23:32:36,960 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_alloc [2021-12-06 23:32:36,960 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_alloc [2021-12-06 23:32:36,961 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-06 23:32:36,961 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-06 23:32:36,961 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-12-06 23:32:36,961 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-12-06 23:32:36,961 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-06 23:32:36,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-06 23:32:36,961 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-06 23:32:36,962 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-06 23:32:36,962 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-12-06 23:32:36,962 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-12-06 23:32:36,962 INFO L130 BoogieDeclarations]: Found specification of procedure printer_poll [2021-12-06 23:32:36,962 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_poll [2021-12-06 23:32:36,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-06 23:32:36,962 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-06 23:32:36,962 INFO L130 BoogieDeclarations]: Found specification of procedure set_printer_interface [2021-12-06 23:32:36,963 INFO L138 BoogieDeclarations]: Found implementation of procedure set_printer_interface [2021-12-06 23:32:36,963 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2021-12-06 23:32:36,963 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2021-12-06 23:32:36,963 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_queue [2021-12-06 23:32:36,963 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_queue [2021-12-06 23:32:36,963 INFO L130 BoogieDeclarations]: Found specification of procedure set_interface [2021-12-06 23:32:36,963 INFO L138 BoogieDeclarations]: Found implementation of procedure set_interface [2021-12-06 23:32:36,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-12-06 23:32:36,964 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup_complete [2021-12-06 23:32:36,964 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup_complete [2021-12-06 23:32:36,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-12-06 23:32:36,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-12-06 23:32:36,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-12-06 23:32:36,964 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-12-06 23:32:36,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-12-06 23:32:36,965 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-06 23:32:36,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-06 23:32:36,965 INFO L130 BoogieDeclarations]: Found specification of procedure printer_write [2021-12-06 23:32:36,965 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_write [2021-12-06 23:32:36,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 23:32:36,965 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-12-06 23:32:36,965 INFO L130 BoogieDeclarations]: Found specification of procedure printer_unbind [2021-12-06 23:32:36,966 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_unbind [2021-12-06 23:32:36,966 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc_notrace [2021-12-06 23:32:36,966 INFO L130 BoogieDeclarations]: Found specification of procedure printer_close [2021-12-06 23:32:36,966 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_close [2021-12-06 23:32:36,966 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-12-06 23:32:36,966 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-12-06 23:32:36,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 23:32:36,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 23:32:36,967 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-06 23:32:36,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-12-06 23:32:36,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-12-06 23:32:36,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-12-06 23:32:36,967 INFO L130 BoogieDeclarations]: Found specification of procedure init_utsname [2021-12-06 23:32:36,967 INFO L138 BoogieDeclarations]: Found implementation of procedure init_utsname [2021-12-06 23:32:36,967 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_enable [2021-12-06 23:32:36,967 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_enable [2021-12-06 23:32:36,968 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_notrace [2021-12-06 23:32:36,968 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_notrace [2021-12-06 23:32:36,968 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-06 23:32:36,968 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-06 23:32:36,968 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-12-06 23:32:36,968 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-12-06 23:32:36,968 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_autoconfig [2021-12-06 23:32:36,968 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_autoconfig [2021-12-06 23:32:36,968 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-12-06 23:32:36,969 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-12-06 23:32:36,969 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-06 23:32:36,969 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-06 23:32:36,969 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup [2021-12-06 23:32:36,969 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup [2021-12-06 23:32:36,969 INFO L130 BoogieDeclarations]: Found specification of procedure set_gadget_data [2021-12-06 23:32:36,969 INFO L138 BoogieDeclarations]: Found implementation of procedure set_gadget_data [2021-12-06 23:32:36,969 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_disable [2021-12-06 23:32:36,970 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_disable [2021-12-06 23:32:36,970 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-12-06 23:32:36,970 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-12-06 23:32:36,970 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_region [2021-12-06 23:32:36,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_region [2021-12-06 23:32:36,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-12-06 23:32:36,970 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-12-06 23:32:36,970 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-12-06 23:32:36,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 23:32:36,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 23:32:36,971 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-06 23:32:36,971 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-06 23:32:37,410 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 23:32:37,413 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 23:32:37,485 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-06 23:33:04,805 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 23:33:04,820 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 23:33:04,821 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 23:33:04,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:33:04 BoogieIcfgContainer [2021-12-06 23:33:04,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 23:33:04,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 23:33:04,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 23:33:04,827 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 23:33:04,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 11:32:35" (1/3) ... [2021-12-06 23:33:04,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ef0230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:33:04, skipping insertion in model container [2021-12-06 23:33:04,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:32:36" (2/3) ... [2021-12-06 23:33:04,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ef0230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:33:04, skipping insertion in model container [2021-12-06 23:33:04,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:33:04" (3/3) ... [2021-12-06 23:33:04,829 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i [2021-12-06 23:33:04,833 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 23:33:04,833 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 23:33:04,876 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:33:04,881 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 [2021-12-06 23:33:04,881 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 23:33:04,916 INFO L276 IsEmpty]: Start isEmpty. Operand has 1265 states, 878 states have (on average 1.3849658314350797) internal successors, (1216), 921 states have internal predecessors, (1216), 320 states have call successors, (320), 66 states have call predecessors, (320), 65 states have return successors, (316), 313 states have call predecessors, (316), 316 states have call successors, (316) [2021-12-06 23:33:04,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-06 23:33:04,925 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:33:04,926 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:33:04,926 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:33:04,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:33:04,930 INFO L85 PathProgramCache]: Analyzing trace with hash 552217187, now seen corresponding path program 1 times [2021-12-06 23:33:04,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:33:04,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [332598057] [2021-12-06 23:33:04,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:33:04,944 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:33:04,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:33:04,945 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:33:04,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-06 23:33:06,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:06,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 1313 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 23:33:06,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:33:07,242 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-06 23:33:07,242 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:33:07,243 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:33:07,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [332598057] [2021-12-06 23:33:07,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [332598057] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:33:07,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:33:07,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:33:07,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086731061] [2021-12-06 23:33:07,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:33:07,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:33:07,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:33:07,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:33:07,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:33:07,279 INFO L87 Difference]: Start difference. First operand has 1265 states, 878 states have (on average 1.3849658314350797) internal successors, (1216), 921 states have internal predecessors, (1216), 320 states have call successors, (320), 66 states have call predecessors, (320), 65 states have return successors, (316), 313 states have call predecessors, (316), 316 states have call successors, (316) Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-06 23:33:07,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:33:07,623 INFO L93 Difference]: Finished difference Result 3597 states and 5353 transitions. [2021-12-06 23:33:07,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:33:07,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 56 [2021-12-06 23:33:07,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:33:07,660 INFO L225 Difference]: With dead ends: 3597 [2021-12-06 23:33:07,660 INFO L226 Difference]: Without dead ends: 2318 [2021-12-06 23:33:07,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:33:07,678 INFO L933 BasicCegarLoop]: 2010 mSDtfsCounter, 1682 mSDsluCounter, 1653 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1682 SdHoareTripleChecker+Valid, 3663 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:33:07,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1682 Valid, 3663 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:33:07,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2318 states. [2021-12-06 23:33:07,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2318 to 2314. [2021-12-06 23:33:07,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2314 states, 1596 states have (on average 1.3615288220551378) internal successors, (2173), 1657 states have internal predecessors, (2173), 596 states have call successors, (596), 123 states have call predecessors, (596), 121 states have return successors, (584), 575 states have call predecessors, (584), 584 states have call successors, (584) [2021-12-06 23:33:07,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2314 states to 2314 states and 3353 transitions. [2021-12-06 23:33:07,877 INFO L78 Accepts]: Start accepts. Automaton has 2314 states and 3353 transitions. Word has length 56 [2021-12-06 23:33:07,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:33:07,877 INFO L470 AbstractCegarLoop]: Abstraction has 2314 states and 3353 transitions. [2021-12-06 23:33:07,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-06 23:33:07,877 INFO L276 IsEmpty]: Start isEmpty. Operand 2314 states and 3353 transitions. [2021-12-06 23:33:07,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-06 23:33:07,881 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:33:07,881 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:33:07,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-06 23:33:08,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:33:08,082 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:33:08,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:33:08,083 INFO L85 PathProgramCache]: Analyzing trace with hash -62076608, now seen corresponding path program 1 times [2021-12-06 23:33:08,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:33:08,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [973443863] [2021-12-06 23:33:08,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:33:08,085 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:33:08,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:33:08,085 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:33:08,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-06 23:33:09,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:09,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 1314 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 23:33:09,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:33:10,298 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-06 23:33:10,298 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:33:10,298 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:33:10,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [973443863] [2021-12-06 23:33:10,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [973443863] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:33:10,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:33:10,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:33:10,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377244927] [2021-12-06 23:33:10,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:33:10,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:33:10,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:33:10,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:33:10,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:33:10,300 INFO L87 Difference]: Start difference. First operand 2314 states and 3353 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-06 23:33:10,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:33:10,549 INFO L93 Difference]: Finished difference Result 6880 states and 9982 transitions. [2021-12-06 23:33:10,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:33:10,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 57 [2021-12-06 23:33:10,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:33:10,586 INFO L225 Difference]: With dead ends: 6880 [2021-12-06 23:33:10,586 INFO L226 Difference]: Without dead ends: 4581 [2021-12-06 23:33:10,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:33:10,598 INFO L933 BasicCegarLoop]: 2061 mSDtfsCounter, 1666 mSDsluCounter, 1651 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1666 SdHoareTripleChecker+Valid, 3712 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:33:10,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1666 Valid, 3712 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:33:10,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4581 states. [2021-12-06 23:33:10,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4581 to 4573. [2021-12-06 23:33:10,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4573 states, 3163 states have (on average 1.3629465697122984) internal successors, (4311), 3276 states have internal predecessors, (4311), 1170 states have call successors, (1170), 243 states have call predecessors, (1170), 239 states have return successors, (1152), 1137 states have call predecessors, (1152), 1152 states have call successors, (1152) [2021-12-06 23:33:10,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4573 states to 4573 states and 6633 transitions. [2021-12-06 23:33:10,789 INFO L78 Accepts]: Start accepts. Automaton has 4573 states and 6633 transitions. Word has length 57 [2021-12-06 23:33:10,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:33:10,790 INFO L470 AbstractCegarLoop]: Abstraction has 4573 states and 6633 transitions. [2021-12-06 23:33:10,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-06 23:33:10,790 INFO L276 IsEmpty]: Start isEmpty. Operand 4573 states and 6633 transitions. [2021-12-06 23:33:10,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-06 23:33:10,793 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:33:10,794 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:33:10,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-06 23:33:10,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:33:10,994 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:33:10,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:33:10,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1572137986, now seen corresponding path program 1 times [2021-12-06 23:33:10,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:33:10,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [531357231] [2021-12-06 23:33:10,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:33:10,996 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:33:10,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:33:10,997 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:33:10,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-06 23:33:12,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:12,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 1322 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 23:33:12,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:33:12,428 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-06 23:33:12,428 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:33:12,428 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:33:12,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [531357231] [2021-12-06 23:33:12,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [531357231] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:33:12,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:33:12,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:33:12,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328519883] [2021-12-06 23:33:12,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:33:12,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:33:12,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:33:12,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:33:12,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:33:12,430 INFO L87 Difference]: Start difference. First operand 4573 states and 6633 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 23:33:15,107 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.68s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:33:16,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:33:16,277 INFO L93 Difference]: Finished difference Result 13449 states and 19531 transitions. [2021-12-06 23:33:16,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:33:16,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 59 [2021-12-06 23:33:16,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:33:16,377 INFO L225 Difference]: With dead ends: 13449 [2021-12-06 23:33:16,378 INFO L226 Difference]: Without dead ends: 8891 [2021-12-06 23:33:16,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:33:16,394 INFO L933 BasicCegarLoop]: 2113 mSDtfsCounter, 1653 mSDsluCounter, 1625 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1653 SdHoareTripleChecker+Valid, 3738 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-12-06 23:33:16,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1653 Valid, 3738 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2021-12-06 23:33:16,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8891 states. [2021-12-06 23:33:16,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8891 to 8883. [2021-12-06 23:33:16,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8883 states, 6138 states have (on average 1.3647768002606713) internal successors, (8377), 6346 states have internal predecessors, (8377), 2270 states have call successors, (2270), 479 states have call predecessors, (2270), 474 states have return successors, (2252), 2225 states have call predecessors, (2252), 2252 states have call successors, (2252) [2021-12-06 23:33:16,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8883 states to 8883 states and 12899 transitions. [2021-12-06 23:33:16,729 INFO L78 Accepts]: Start accepts. Automaton has 8883 states and 12899 transitions. Word has length 59 [2021-12-06 23:33:16,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:33:16,729 INFO L470 AbstractCegarLoop]: Abstraction has 8883 states and 12899 transitions. [2021-12-06 23:33:16,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 23:33:16,730 INFO L276 IsEmpty]: Start isEmpty. Operand 8883 states and 12899 transitions. [2021-12-06 23:33:16,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-06 23:33:16,733 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:33:16,733 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:33:16,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-06 23:33:16,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:33:16,934 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:33:16,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:33:16,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1660206286, now seen corresponding path program 1 times [2021-12-06 23:33:16,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:33:16,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1180099169] [2021-12-06 23:33:16,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:33:16,936 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:33:16,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:33:16,937 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:33:16,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-06 23:33:17,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:18,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 1359 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 23:33:18,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:33:19,354 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-06 23:33:19,354 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:33:19,355 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:33:19,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1180099169] [2021-12-06 23:33:19,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1180099169] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:33:19,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:33:19,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 23:33:19,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614452371] [2021-12-06 23:33:19,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:33:19,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:33:19,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:33:19,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:33:19,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:33:19,356 INFO L87 Difference]: Start difference. First operand 8883 states and 12899 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 23:33:19,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:33:19,986 INFO L93 Difference]: Finished difference Result 18900 states and 27642 transitions. [2021-12-06 23:33:19,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:33:19,987 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 75 [2021-12-06 23:33:19,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:33:20,053 INFO L225 Difference]: With dead ends: 18900 [2021-12-06 23:33:20,053 INFO L226 Difference]: Without dead ends: 10032 [2021-12-06 23:33:20,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:33:20,084 INFO L933 BasicCegarLoop]: 1954 mSDtfsCounter, 233 mSDsluCounter, 5649 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 7603 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:33:20,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 7603 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 23:33:20,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10032 states. [2021-12-06 23:33:20,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10032 to 8899. [2021-12-06 23:33:20,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8899 states, 6150 states have (on average 1.3640650406504065) internal successors, (8389), 6358 states have internal predecessors, (8389), 2270 states have call successors, (2270), 479 states have call predecessors, (2270), 478 states have return successors, (2264), 2229 states have call predecessors, (2264), 2252 states have call successors, (2264) [2021-12-06 23:33:20,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8899 states to 8899 states and 12923 transitions. [2021-12-06 23:33:20,486 INFO L78 Accepts]: Start accepts. Automaton has 8899 states and 12923 transitions. Word has length 75 [2021-12-06 23:33:20,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:33:20,487 INFO L470 AbstractCegarLoop]: Abstraction has 8899 states and 12923 transitions. [2021-12-06 23:33:20,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 23:33:20,487 INFO L276 IsEmpty]: Start isEmpty. Operand 8899 states and 12923 transitions. [2021-12-06 23:33:20,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-06 23:33:20,489 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:33:20,490 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:33:20,515 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-12-06 23:33:20,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:33:20,691 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:33:20,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:33:20,693 INFO L85 PathProgramCache]: Analyzing trace with hash -495083486, now seen corresponding path program 1 times [2021-12-06 23:33:20,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:33:20,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1696965266] [2021-12-06 23:33:20,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:33:20,698 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:33:20,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:33:20,701 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:33:20,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-06 23:33:21,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:33:21,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 1361 conjuncts, 27 conjunts are in the unsatisfiable core [2021-12-06 23:33:21,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:33:28,997 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-06 23:33:28,997 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:33:28,998 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:33:28,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1696965266] [2021-12-06 23:33:28,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1696965266] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:33:28,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:33:28,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-06 23:33:28,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412264557] [2021-12-06 23:33:28,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:33:28,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 23:33:28,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:33:28,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 23:33:28,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-06 23:33:28,999 INFO L87 Difference]: Start difference. First operand 8899 states and 12923 transitions. Second operand has 13 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 23:33:31,092 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:33:33,899 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:33:36,605 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.71s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:33:39,338 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.73s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:35:59,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:35:59,025 INFO L93 Difference]: Finished difference Result 26018 states and 38079 transitions. [2021-12-06 23:35:59,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 23:35:59,028 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (10), 3 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 77 [2021-12-06 23:35:59,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:35:59,110 INFO L225 Difference]: With dead ends: 26018 [2021-12-06 23:35:59,110 INFO L226 Difference]: Without dead ends: 17134 [2021-12-06 23:35:59,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2021-12-06 23:35:59,138 INFO L933 BasicCegarLoop]: 2238 mSDtfsCounter, 2645 mSDsluCounter, 20522 mSDsCounter, 0 mSdLazyCounter, 3245 mSolverCounterSat, 242 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 134.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2719 SdHoareTripleChecker+Valid, 22760 SdHoareTripleChecker+Invalid, 3491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 3245 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 140.7s IncrementalHoareTripleChecker+Time [2021-12-06 23:35:59,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2719 Valid, 22760 Invalid, 3491 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [242 Valid, 3245 Invalid, 4 Unknown, 0 Unchecked, 140.7s Time] [2021-12-06 23:35:59,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17134 states. [2021-12-06 23:35:59,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17134 to 15432. [2021-12-06 23:35:59,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15432 states, 10662 states have (on average 1.3655974488838867) internal successors, (14560), 11023 states have internal predecessors, (14560), 3940 states have call successors, (3940), 828 states have call predecessors, (3940), 829 states have return successors, (3943), 3874 states have call predecessors, (3943), 3922 states have call successors, (3943) [2021-12-06 23:35:59,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15432 states to 15432 states and 22443 transitions. [2021-12-06 23:35:59,704 INFO L78 Accepts]: Start accepts. Automaton has 15432 states and 22443 transitions. Word has length 77 [2021-12-06 23:35:59,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:35:59,705 INFO L470 AbstractCegarLoop]: Abstraction has 15432 states and 22443 transitions. [2021-12-06 23:35:59,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 23:35:59,705 INFO L276 IsEmpty]: Start isEmpty. Operand 15432 states and 22443 transitions. [2021-12-06 23:35:59,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-12-06 23:35:59,707 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:35:59,707 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:35:59,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-12-06 23:35:59,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:35:59,908 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:35:59,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:35:59,908 INFO L85 PathProgramCache]: Analyzing trace with hash 883910775, now seen corresponding path program 1 times [2021-12-06 23:35:59,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:35:59,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1436469002] [2021-12-06 23:35:59,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:35:59,910 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:35:59,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:35:59,910 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:35:59,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-06 23:36:00,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:36:01,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 1382 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 23:36:01,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:36:07,250 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-06 23:36:07,250 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:36:07,251 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:36:07,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1436469002] [2021-12-06 23:36:07,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1436469002] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:36:07,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:36:07,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:36:07,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428516491] [2021-12-06 23:36:07,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:36:07,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:36:07,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:36:07,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:36:07,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:36:07,253 INFO L87 Difference]: Start difference. First operand 15432 states and 22443 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-06 23:36:08,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:36:08,133 INFO L93 Difference]: Finished difference Result 46243 states and 67267 transitions. [2021-12-06 23:36:08,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:36:08,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 83 [2021-12-06 23:36:08,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:36:08,235 INFO L225 Difference]: With dead ends: 46243 [2021-12-06 23:36:08,235 INFO L226 Difference]: Without dead ends: 30823 [2021-12-06 23:36:08,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:36:08,268 INFO L933 BasicCegarLoop]: 2146 mSDtfsCounter, 1640 mSDsluCounter, 1674 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1640 SdHoareTripleChecker+Valid, 3820 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:36:08,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1640 Valid, 3820 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 23:36:08,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30823 states. [2021-12-06 23:36:09,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30823 to 30774. [2021-12-06 23:36:09,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30774 states, 21275 states have (on average 1.3659224441833138) internal successors, (29060), 21986 states have internal predecessors, (29060), 7848 states have call successors, (7848), 1646 states have call predecessors, (7848), 1650 states have return successors, (7870), 7729 states have call predecessors, (7870), 7828 states have call successors, (7870) [2021-12-06 23:36:09,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30774 states to 30774 states and 44778 transitions. [2021-12-06 23:36:09,220 INFO L78 Accepts]: Start accepts. Automaton has 30774 states and 44778 transitions. Word has length 83 [2021-12-06 23:36:09,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:36:09,220 INFO L470 AbstractCegarLoop]: Abstraction has 30774 states and 44778 transitions. [2021-12-06 23:36:09,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-06 23:36:09,221 INFO L276 IsEmpty]: Start isEmpty. Operand 30774 states and 44778 transitions. [2021-12-06 23:36:09,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-06 23:36:09,223 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:36:09,223 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:36:09,249 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-12-06 23:36:09,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:36:09,424 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:36:09,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:36:09,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1889059966, now seen corresponding path program 1 times [2021-12-06 23:36:09,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:36:09,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1585224297] [2021-12-06 23:36:09,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:36:09,426 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:36:09,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:36:09,426 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:36:09,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-06 23:36:10,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:36:10,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 1402 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 23:36:10,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:36:13,325 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-06 23:36:13,325 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:36:13,325 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:36:13,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1585224297] [2021-12-06 23:36:13,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1585224297] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:36:13,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:36:13,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:36:13,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910377478] [2021-12-06 23:36:13,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:36:13,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:36:13,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:36:13,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:36:13,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:36:13,327 INFO L87 Difference]: Start difference. First operand 30774 states and 44778 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 23:36:15,420 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:36:17,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:36:17,229 INFO L93 Difference]: Finished difference Result 61540 states and 89541 transitions. [2021-12-06 23:36:17,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:36:17,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 92 [2021-12-06 23:36:17,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:36:17,383 INFO L225 Difference]: With dead ends: 61540 [2021-12-06 23:36:17,383 INFO L226 Difference]: Without dead ends: 30781 [2021-12-06 23:36:17,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:36:17,433 INFO L933 BasicCegarLoop]: 3305 mSDtfsCounter, 1620 mSDsluCounter, 1702 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1620 SdHoareTripleChecker+Valid, 5007 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:36:17,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1620 Valid, 5007 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2021-12-06 23:36:17,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30781 states. [2021-12-06 23:36:18,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30781 to 30755. [2021-12-06 23:36:18,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30755 states, 21256 states have (on average 1.3654968009032744) internal successors, (29025), 21969 states have internal predecessors, (29025), 7848 states have call successors, (7848), 1646 states have call predecessors, (7848), 1650 states have return successors, (7870), 7727 states have call predecessors, (7870), 7828 states have call successors, (7870) [2021-12-06 23:36:18,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30755 states to 30755 states and 44743 transitions. [2021-12-06 23:36:18,396 INFO L78 Accepts]: Start accepts. Automaton has 30755 states and 44743 transitions. Word has length 92 [2021-12-06 23:36:18,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:36:18,396 INFO L470 AbstractCegarLoop]: Abstraction has 30755 states and 44743 transitions. [2021-12-06 23:36:18,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 23:36:18,397 INFO L276 IsEmpty]: Start isEmpty. Operand 30755 states and 44743 transitions. [2021-12-06 23:36:18,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-06 23:36:18,399 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:36:18,400 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-12-06 23:36:18,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-12-06 23:36:18,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:36:18,600 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:36:18,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:36:18,601 INFO L85 PathProgramCache]: Analyzing trace with hash -969334546, now seen corresponding path program 1 times [2021-12-06 23:36:18,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:36:18,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1940298241] [2021-12-06 23:36:18,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:36:18,602 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:36:18,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:36:18,602 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:36:18,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-06 23:36:19,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:36:19,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 1404 conjuncts, 45 conjunts are in the unsatisfiable core [2021-12-06 23:36:19,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:36:51,865 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-12-06 23:36:51,865 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:36:51,865 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:36:51,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1940298241] [2021-12-06 23:36:51,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1940298241] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:36:51,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:36:51,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-12-06 23:36:51,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308732495] [2021-12-06 23:36:51,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:36:51,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-06 23:36:51,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:36:51,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-06 23:36:51,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2021-12-06 23:36:51,867 INFO L87 Difference]: Start difference. First operand 30755 states and 44743 transitions. Second operand has 22 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 16 states have internal predecessors, (55), 7 states have call successors, (14), 3 states have call predecessors, (14), 7 states have return successors, (13), 8 states have call predecessors, (13), 6 states have call successors, (13) [2021-12-06 23:36:53,960 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:38:54,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:38:54,492 INFO L93 Difference]: Finished difference Result 58087 states and 84521 transitions. [2021-12-06 23:38:54,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-12-06 23:38:54,493 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 16 states have internal predecessors, (55), 7 states have call successors, (14), 3 states have call predecessors, (14), 7 states have return successors, (13), 8 states have call predecessors, (13), 6 states have call successors, (13) Word has length 97 [2021-12-06 23:38:54,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:38:54,589 INFO L225 Difference]: With dead ends: 58087 [2021-12-06 23:38:54,589 INFO L226 Difference]: Without dead ends: 27347 [2021-12-06 23:38:54,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 49.5s TimeCoverageRelationStatistics Valid=169, Invalid=1553, Unknown=0, NotChecked=0, Total=1722 [2021-12-06 23:38:54,646 INFO L933 BasicCegarLoop]: 3075 mSDtfsCounter, 2252 mSDsluCounter, 49503 mSDsCounter, 0 mSdLazyCounter, 2110 mSolverCounterSat, 295 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 92.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2263 SdHoareTripleChecker+Valid, 52578 SdHoareTripleChecker+Invalid, 2406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 2110 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 95.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:38:54,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2263 Valid, 52578 Invalid, 2406 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [295 Valid, 2110 Invalid, 1 Unknown, 0 Unchecked, 95.3s Time] [2021-12-06 23:38:54,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27347 states. [2021-12-06 23:38:55,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27347 to 12095. [2021-12-06 23:38:55,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12095 states, 8345 states have (on average 1.3642899940083884) internal successors, (11385), 8620 states have internal predecessors, (11385), 3097 states have call successors, (3097), 659 states have call predecessors, (3097), 652 states have return successors, (3085), 3046 states have call predecessors, (3085), 3085 states have call successors, (3085) [2021-12-06 23:38:55,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12095 states to 12095 states and 17567 transitions. [2021-12-06 23:38:55,320 INFO L78 Accepts]: Start accepts. Automaton has 12095 states and 17567 transitions. Word has length 97 [2021-12-06 23:38:55,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:38:55,321 INFO L470 AbstractCegarLoop]: Abstraction has 12095 states and 17567 transitions. [2021-12-06 23:38:55,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 16 states have internal predecessors, (55), 7 states have call successors, (14), 3 states have call predecessors, (14), 7 states have return successors, (13), 8 states have call predecessors, (13), 6 states have call successors, (13) [2021-12-06 23:38:55,321 INFO L276 IsEmpty]: Start isEmpty. Operand 12095 states and 17567 transitions. [2021-12-06 23:38:55,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-06 23:38:55,324 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:38:55,324 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:38:55,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-12-06 23:38:55,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:38:55,526 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:38:55,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:38:55,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1801608750, now seen corresponding path program 1 times [2021-12-06 23:38:55,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:38:55,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [921292730] [2021-12-06 23:38:55,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:38:55,534 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:38:55,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:38:55,537 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:38:55,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-06 23:38:56,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:38:56,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 1415 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 23:38:56,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:38:59,370 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-06 23:38:59,370 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:38:59,370 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:38:59,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [921292730] [2021-12-06 23:38:59,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [921292730] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:38:59,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:38:59,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 23:38:59,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992438735] [2021-12-06 23:38:59,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:38:59,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:38:59,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:38:59,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:38:59,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:38:59,372 INFO L87 Difference]: Start difference. First operand 12095 states and 17567 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 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) [2021-12-06 23:39:02,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:39:02,877 INFO L93 Difference]: Finished difference Result 22525 states and 32803 transitions. [2021-12-06 23:39:02,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:39:02,878 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), 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 104 [2021-12-06 23:39:02,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:39:02,909 INFO L225 Difference]: With dead ends: 22525 [2021-12-06 23:39:02,910 INFO L226 Difference]: Without dead ends: 10466 [2021-12-06 23:39:02,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 23:39:02,933 INFO L933 BasicCegarLoop]: 2142 mSDtfsCounter, 1367 mSDsluCounter, 7887 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1426 SdHoareTripleChecker+Valid, 10029 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 23:39:02,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1426 Valid, 10029 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-06 23:39:02,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10466 states. [2021-12-06 23:39:03,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10466 to 9921. [2021-12-06 23:39:03,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9921 states, 6844 states have (on average 1.3635300993571011) internal successors, (9332), 7068 states have internal predecessors, (9332), 2538 states have call successors, (2538), 545 states have call predecessors, (2538), 538 states have return successors, (2528), 2496 states have call predecessors, (2528), 2528 states have call successors, (2528) [2021-12-06 23:39:03,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9921 states to 9921 states and 14398 transitions. [2021-12-06 23:39:03,390 INFO L78 Accepts]: Start accepts. Automaton has 9921 states and 14398 transitions. Word has length 104 [2021-12-06 23:39:03,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:39:03,390 INFO L470 AbstractCegarLoop]: Abstraction has 9921 states and 14398 transitions. [2021-12-06 23:39:03,390 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), 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) [2021-12-06 23:39:03,390 INFO L276 IsEmpty]: Start isEmpty. Operand 9921 states and 14398 transitions. [2021-12-06 23:39:03,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-06 23:39:03,394 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:39:03,394 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-12-06 23:39:03,426 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-12-06 23:39:03,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:39:03,596 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:39:03,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:39:03,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1289039656, now seen corresponding path program 1 times [2021-12-06 23:39:03,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:39:03,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1444836079] [2021-12-06 23:39:03,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:39:03,601 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:39:03,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:39:03,603 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:39:03,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-06 23:39:04,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:39:04,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 1418 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 23:39:04,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:39:07,384 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-06 23:39:07,384 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:39:07,384 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:39:07,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1444836079] [2021-12-06 23:39:07,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1444836079] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:39:07,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:39:07,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 23:39:07,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347291477] [2021-12-06 23:39:07,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:39:07,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:39:07,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:39:07,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:39:07,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:39:07,386 INFO L87 Difference]: Start difference. First operand 9921 states and 14398 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 23:39:10,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:39:10,634 INFO L93 Difference]: Finished difference Result 11563 states and 16860 transitions. [2021-12-06 23:39:10,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:39:10,635 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 104 [2021-12-06 23:39:10,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:39:10,656 INFO L225 Difference]: With dead ends: 11563 [2021-12-06 23:39:10,656 INFO L226 Difference]: Without dead ends: 7177 [2021-12-06 23:39:10,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 23:39:10,666 INFO L933 BasicCegarLoop]: 2046 mSDtfsCounter, 905 mSDsluCounter, 7578 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 965 SdHoareTripleChecker+Valid, 9624 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-06 23:39:10,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [965 Valid, 9624 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-06 23:39:10,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7177 states. [2021-12-06 23:39:10,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7177 to 6645. [2021-12-06 23:39:10,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6645 states, 4585 states have (on average 1.3611777535441658) internal successors, (6241), 4735 states have internal predecessors, (6241), 1696 states have call successors, (1696), 367 states have call predecessors, (1696), 363 states have return successors, (1688), 1668 states have call predecessors, (1688), 1688 states have call successors, (1688) [2021-12-06 23:39:10,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6645 states to 6645 states and 9625 transitions. [2021-12-06 23:39:10,949 INFO L78 Accepts]: Start accepts. Automaton has 6645 states and 9625 transitions. Word has length 104 [2021-12-06 23:39:10,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:39:10,949 INFO L470 AbstractCegarLoop]: Abstraction has 6645 states and 9625 transitions. [2021-12-06 23:39:10,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 23:39:10,949 INFO L276 IsEmpty]: Start isEmpty. Operand 6645 states and 9625 transitions. [2021-12-06 23:39:10,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-06 23:39:10,953 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:39:10,953 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-12-06 23:39:10,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-12-06 23:39:11,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:39:11,154 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:39:11,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:39:11,154 INFO L85 PathProgramCache]: Analyzing trace with hash 602249427, now seen corresponding path program 1 times [2021-12-06 23:39:11,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:39:11,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816673821] [2021-12-06 23:39:11,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:39:11,155 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:39:11,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:39:11,156 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:39:11,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-06 23:39:12,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:39:12,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 1421 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 23:39:12,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:39:14,229 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-06 23:39:14,230 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:39:14,230 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:39:14,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816673821] [2021-12-06 23:39:14,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816673821] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:39:14,230 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:39:14,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 23:39:14,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609918642] [2021-12-06 23:39:14,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:39:14,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:39:14,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:39:14,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:39:14,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:39:14,232 INFO L87 Difference]: Start difference. First operand 6645 states and 9625 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-06 23:39:17,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:39:17,610 INFO L93 Difference]: Finished difference Result 7227 states and 10545 transitions. [2021-12-06 23:39:17,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:39:17,610 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), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 107 [2021-12-06 23:39:17,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:39:17,625 INFO L225 Difference]: With dead ends: 7227 [2021-12-06 23:39:17,625 INFO L226 Difference]: Without dead ends: 5039 [2021-12-06 23:39:17,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 23:39:17,631 INFO L933 BasicCegarLoop]: 2174 mSDtfsCounter, 845 mSDsluCounter, 7597 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 9771 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-06 23:39:17,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [907 Valid, 9771 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-06 23:39:17,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5039 states. [2021-12-06 23:39:17,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5039 to 4484. [2021-12-06 23:39:17,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4484 states, 3094 states have (on average 1.3574660633484164) internal successors, (4200), 3196 states have internal predecessors, (4200), 1141 states have call successors, (1141), 251 states have call predecessors, (1141), 248 states have return successors, (1133), 1120 states have call predecessors, (1133), 1133 states have call successors, (1133) [2021-12-06 23:39:17,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4484 states to 4484 states and 6474 transitions. [2021-12-06 23:39:17,843 INFO L78 Accepts]: Start accepts. Automaton has 4484 states and 6474 transitions. Word has length 107 [2021-12-06 23:39:17,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:39:17,843 INFO L470 AbstractCegarLoop]: Abstraction has 4484 states and 6474 transitions. [2021-12-06 23:39:17,843 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), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-06 23:39:17,843 INFO L276 IsEmpty]: Start isEmpty. Operand 4484 states and 6474 transitions. [2021-12-06 23:39:17,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-06 23:39:17,847 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:39:17,847 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-12-06 23:39:17,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-12-06 23:39:18,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:39:18,048 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:39:18,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:39:18,048 INFO L85 PathProgramCache]: Analyzing trace with hash -455362982, now seen corresponding path program 1 times [2021-12-06 23:39:18,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:39:18,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [112282931] [2021-12-06 23:39:18,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:39:18,050 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:39:18,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:39:18,051 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:39:18,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-06 23:39:19,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:39:19,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 1433 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 23:39:19,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:39:21,837 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-06 23:39:21,837 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:39:21,838 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:39:21,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [112282931] [2021-12-06 23:39:21,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [112282931] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:39:21,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:39:21,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 23:39:21,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654333572] [2021-12-06 23:39:21,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:39:21,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:39:21,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:39:21,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:39:21,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:39:21,840 INFO L87 Difference]: Start difference. First operand 4484 states and 6474 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 23:39:25,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:39:25,047 INFO L93 Difference]: Finished difference Result 8926 states and 12897 transitions. [2021-12-06 23:39:25,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:39:25,048 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), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 110 [2021-12-06 23:39:25,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:39:25,061 INFO L225 Difference]: With dead ends: 8926 [2021-12-06 23:39:25,061 INFO L226 Difference]: Without dead ends: 4478 [2021-12-06 23:39:25,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-12-06 23:39:25,069 INFO L933 BasicCegarLoop]: 1995 mSDtfsCounter, 789 mSDsluCounter, 6944 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 8939 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:39:25,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [790 Valid, 8939 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 23:39:25,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4478 states. [2021-12-06 23:39:25,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4478 to 4478. [2021-12-06 23:39:25,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4478 states, 3091 states have (on average 1.357165965706891) internal successors, (4195), 3193 states have internal predecessors, (4195), 1139 states have call successors, (1139), 249 states have call predecessors, (1139), 247 states have return successors, (1131), 1119 states have call predecessors, (1131), 1131 states have call successors, (1131) [2021-12-06 23:39:25,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4478 states to 4478 states and 6465 transitions. [2021-12-06 23:39:25,267 INFO L78 Accepts]: Start accepts. Automaton has 4478 states and 6465 transitions. Word has length 110 [2021-12-06 23:39:25,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:39:25,267 INFO L470 AbstractCegarLoop]: Abstraction has 4478 states and 6465 transitions. [2021-12-06 23:39:25,267 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), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 23:39:25,267 INFO L276 IsEmpty]: Start isEmpty. Operand 4478 states and 6465 transitions. [2021-12-06 23:39:25,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-06 23:39:25,270 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:39:25,271 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-12-06 23:39:25,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-12-06 23:39:25,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:39:25,472 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:39:25,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:39:25,473 INFO L85 PathProgramCache]: Analyzing trace with hash -845367944, now seen corresponding path program 1 times [2021-12-06 23:39:25,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:39:25,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1153756584] [2021-12-06 23:39:25,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:39:25,478 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:39:25,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:39:25,480 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:39:25,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-06 23:39:26,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:39:26,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 1423 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 23:39:26,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:39:30,092 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-06 23:39:30,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:39:30,092 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:39:30,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1153756584] [2021-12-06 23:39:30,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1153756584] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:39:30,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:39:30,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 23:39:30,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976470500] [2021-12-06 23:39:30,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:39:30,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 23:39:30,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:39:30,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 23:39:30,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:39:30,094 INFO L87 Difference]: Start difference. First operand 4478 states and 6465 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-06 23:39:38,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:39:38,706 INFO L93 Difference]: Finished difference Result 7866 states and 11344 transitions. [2021-12-06 23:39:38,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:39:38,706 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 109 [2021-12-06 23:39:38,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:39:38,720 INFO L225 Difference]: With dead ends: 7866 [2021-12-06 23:39:38,720 INFO L226 Difference]: Without dead ends: 3424 [2021-12-06 23:39:38,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-12-06 23:39:38,729 INFO L933 BasicCegarLoop]: 1924 mSDtfsCounter, 2692 mSDsluCounter, 8667 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2692 SdHoareTripleChecker+Valid, 10591 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-12-06 23:39:38,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2692 Valid, 10591 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-12-06 23:39:38,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3424 states. [2021-12-06 23:39:38,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3424 to 3424. [2021-12-06 23:39:38,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3424 states, 2362 states have (on average 1.3513971210838274) internal successors, (3192), 2439 states have internal predecessors, (3192), 867 states have call successors, (867), 196 states have call predecessors, (867), 194 states have return successors, (860), 851 states have call predecessors, (860), 860 states have call successors, (860) [2021-12-06 23:39:38,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3424 states to 3424 states and 4919 transitions. [2021-12-06 23:39:38,894 INFO L78 Accepts]: Start accepts. Automaton has 3424 states and 4919 transitions. Word has length 109 [2021-12-06 23:39:38,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:39:38,894 INFO L470 AbstractCegarLoop]: Abstraction has 3424 states and 4919 transitions. [2021-12-06 23:39:38,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-06 23:39:38,894 INFO L276 IsEmpty]: Start isEmpty. Operand 3424 states and 4919 transitions. [2021-12-06 23:39:38,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-06 23:39:38,898 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:39:38,898 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-12-06 23:39:38,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-12-06 23:39:39,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:39:39,099 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:39:39,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:39:39,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1694153764, now seen corresponding path program 1 times [2021-12-06 23:39:39,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:39:39,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456794835] [2021-12-06 23:39:39,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:39:39,105 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:39:39,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:39:39,107 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:39:39,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-06 23:39:40,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:39:40,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 1453 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 23:39:40,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:39:43,910 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-06 23:39:43,910 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:39:43,911 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:39:43,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456794835] [2021-12-06 23:39:43,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [456794835] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:39:43,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:39:43,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:39:43,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503722374] [2021-12-06 23:39:43,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:39:43,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:39:43,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:39:43,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:39:43,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:39:43,912 INFO L87 Difference]: Start difference. First operand 3424 states and 4919 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 23:39:46,006 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:39:47,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:39:47,049 INFO L93 Difference]: Finished difference Result 3428 states and 4921 transitions. [2021-12-06 23:39:47,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:39:47,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 120 [2021-12-06 23:39:47,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:39:47,058 INFO L225 Difference]: With dead ends: 3428 [2021-12-06 23:39:47,058 INFO L226 Difference]: Without dead ends: 3425 [2021-12-06 23:39:47,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:39:47,060 INFO L933 BasicCegarLoop]: 3284 mSDtfsCounter, 1600 mSDsluCounter, 1649 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1600 SdHoareTripleChecker+Valid, 4933 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:39:47,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1600 Valid, 4933 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2021-12-06 23:39:47,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3425 states. [2021-12-06 23:39:47,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3425 to 3423. [2021-12-06 23:39:47,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3423 states, 2362 states have (on average 1.3505503810330228) internal successors, (3190), 2438 states have internal predecessors, (3190), 866 states have call successors, (866), 196 states have call predecessors, (866), 194 states have return successors, (860), 851 states have call predecessors, (860), 860 states have call successors, (860) [2021-12-06 23:39:47,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3423 states to 3423 states and 4916 transitions. [2021-12-06 23:39:47,218 INFO L78 Accepts]: Start accepts. Automaton has 3423 states and 4916 transitions. Word has length 120 [2021-12-06 23:39:47,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:39:47,219 INFO L470 AbstractCegarLoop]: Abstraction has 3423 states and 4916 transitions. [2021-12-06 23:39:47,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 23:39:47,219 INFO L276 IsEmpty]: Start isEmpty. Operand 3423 states and 4916 transitions. [2021-12-06 23:39:47,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-06 23:39:47,222 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:39:47,222 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 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] [2021-12-06 23:39:47,247 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-12-06 23:39:47,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:39:47,424 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:39:47,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:39:47,425 INFO L85 PathProgramCache]: Analyzing trace with hash -485833321, now seen corresponding path program 1 times [2021-12-06 23:39:47,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:39:47,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [155831318] [2021-12-06 23:39:47,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:39:47,430 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:39:47,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:39:47,432 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:39:47,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-06 23:39:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:39:48,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 1469 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 23:39:48,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:39:53,008 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-06 23:39:53,008 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:39:53,009 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:39:53,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [155831318] [2021-12-06 23:39:53,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [155831318] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:39:53,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:39:53,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 23:39:53,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475162860] [2021-12-06 23:39:53,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:39:53,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 23:39:53,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:39:53,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 23:39:53,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:39:53,011 INFO L87 Difference]: Start difference. First operand 3423 states and 4916 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-06 23:39:55,102 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:40:02,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:40:02,012 INFO L93 Difference]: Finished difference Result 4676 states and 6671 transitions. [2021-12-06 23:40:02,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 23:40:02,012 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (17), 2 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 124 [2021-12-06 23:40:02,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:40:02,017 INFO L225 Difference]: With dead ends: 4676 [2021-12-06 23:40:02,017 INFO L226 Difference]: Without dead ends: 2294 [2021-12-06 23:40:02,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2021-12-06 23:40:02,022 INFO L933 BasicCegarLoop]: 1682 mSDtfsCounter, 23 mSDsluCounter, 10068 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 11750 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-12-06 23:40:02,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 11750 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 48 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2021-12-06 23:40:02,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2294 states. [2021-12-06 23:40:02,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2294 to 2294. [2021-12-06 23:40:02,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2294 states, 1583 states have (on average 1.3480732785849652) internal successors, (2134), 1634 states have internal predecessors, (2134), 580 states have call successors, (580), 131 states have call predecessors, (580), 130 states have return successors, (576), 570 states have call predecessors, (576), 576 states have call successors, (576) [2021-12-06 23:40:02,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2294 states to 2294 states and 3290 transitions. [2021-12-06 23:40:02,119 INFO L78 Accepts]: Start accepts. Automaton has 2294 states and 3290 transitions. Word has length 124 [2021-12-06 23:40:02,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:40:02,119 INFO L470 AbstractCegarLoop]: Abstraction has 2294 states and 3290 transitions. [2021-12-06 23:40:02,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-06 23:40:02,119 INFO L276 IsEmpty]: Start isEmpty. Operand 2294 states and 3290 transitions. [2021-12-06 23:40:02,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-06 23:40:02,123 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:40:02,123 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:40:02,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-12-06 23:40:02,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:40:02,325 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:40:02,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:40:02,326 INFO L85 PathProgramCache]: Analyzing trace with hash 2031280561, now seen corresponding path program 1 times [2021-12-06 23:40:02,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:40:02,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1011259868] [2021-12-06 23:40:02,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:40:02,331 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:40:02,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:40:02,333 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:40:02,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-06 23:40:03,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:40:04,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 1472 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 23:40:04,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:40:05,775 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-06 23:40:05,775 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:40:05,775 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:40:05,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1011259868] [2021-12-06 23:40:05,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1011259868] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:40:05,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:40:05,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:40:05,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955991614] [2021-12-06 23:40:05,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:40:05,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:40:05,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:40:05,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:40:05,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:40:05,777 INFO L87 Difference]: Start difference. First operand 2294 states and 3290 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-06 23:40:07,865 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:40:09,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:40:09,079 INFO L93 Difference]: Finished difference Result 3395 states and 4885 transitions. [2021-12-06 23:40:09,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:40:09,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 130 [2021-12-06 23:40:09,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:40:09,085 INFO L225 Difference]: With dead ends: 3395 [2021-12-06 23:40:09,085 INFO L226 Difference]: Without dead ends: 2267 [2021-12-06 23:40:09,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:40:09,087 INFO L933 BasicCegarLoop]: 3119 mSDtfsCounter, 1584 mSDsluCounter, 1621 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1584 SdHoareTripleChecker+Valid, 4740 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:40:09,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1584 Valid, 4740 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2021-12-06 23:40:09,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2267 states. [2021-12-06 23:40:09,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2267 to 2267. [2021-12-06 23:40:09,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2267 states, 1567 states have (on average 1.349074664964901) internal successors, (2114), 1616 states have internal predecessors, (2114), 573 states have call successors, (573), 127 states have call predecessors, (573), 126 states have return successors, (571), 565 states have call predecessors, (571), 571 states have call successors, (571) [2021-12-06 23:40:09,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2267 states to 2267 states and 3258 transitions. [2021-12-06 23:40:09,185 INFO L78 Accepts]: Start accepts. Automaton has 2267 states and 3258 transitions. Word has length 130 [2021-12-06 23:40:09,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:40:09,186 INFO L470 AbstractCegarLoop]: Abstraction has 2267 states and 3258 transitions. [2021-12-06 23:40:09,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-06 23:40:09,186 INFO L276 IsEmpty]: Start isEmpty. Operand 2267 states and 3258 transitions. [2021-12-06 23:40:09,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-06 23:40:09,189 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:40:09,189 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:40:09,214 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-12-06 23:40:09,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:40:09,391 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:40:09,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:40:09,392 INFO L85 PathProgramCache]: Analyzing trace with hash -443454606, now seen corresponding path program 1 times [2021-12-06 23:40:09,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:40:09,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [698499118] [2021-12-06 23:40:09,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:40:09,396 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:40:09,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:40:09,398 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:40:09,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565fba6f-596b-4c33-8664-6395f16431e8/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process