./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 dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a595fe-a804-43df-9172-eb77901c309a/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a595fe-a804-43df-9172-eb77901c309a/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a595fe-a804-43df-9172-eb77901c309a/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a595fe-a804-43df-9172-eb77901c309a/bin/uautomizer-J5u9QxTXDZ/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_f8a595fe-a804-43df-9172-eb77901c309a/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a595fe-a804-43df-9172-eb77901c309a/bin/uautomizer-J5u9QxTXDZ --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 --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:52:04,423 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:52:04,425 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:52:04,461 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:52:04,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:52:04,463 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:52:04,465 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:52:04,467 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:52:04,469 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:52:04,470 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:52:04,471 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:52:04,473 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:52:04,474 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:52:04,475 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:52:04,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:52:04,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:52:04,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:52:04,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:52:04,482 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:52:04,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:52:04,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:52:04,489 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:52:04,490 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:52:04,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:52:04,496 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:52:04,497 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:52:04,497 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:52:04,498 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:52:04,499 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:52:04,500 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:52:04,501 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:52:04,501 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:52:04,502 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:52:04,503 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:52:04,508 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:52:04,509 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:52:04,510 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:52:04,510 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:52:04,511 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:52:04,512 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:52:04,512 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:52:04,513 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a595fe-a804-43df-9172-eb77901c309a/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-10-17 10:52:04,553 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:52:04,553 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:52:04,553 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:52:04,553 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:52:04,554 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:52:04,554 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:52:04,555 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:52:04,555 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:52:04,555 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:52:04,556 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:52:04,556 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:52:04,556 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:52:04,556 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:52:04,557 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:52:04,557 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:52:04,557 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:52:04,557 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:52:04,558 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:52:04,558 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:52:04,558 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:52:04,558 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:52:04,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:52:04,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:52:04,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:52:04,559 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:52:04,559 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:52:04,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:52:04,560 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:52:04,560 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:52:04,560 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:52:04,561 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_f8a595fe-a804-43df-9172-eb77901c309a/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a595fe-a804-43df-9172-eb77901c309a/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3555fedd9f92961bad45780711b37c7eb42c00277e0bac6769cfc03eaec14a8 [2022-10-17 10:52:04,841 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:52:04,862 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:52:04,865 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:52:04,866 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:52:04,867 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:52:04,868 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a595fe-a804-43df-9172-eb77901c309a/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i [2022-10-17 10:52:04,929 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a595fe-a804-43df-9172-eb77901c309a/bin/uautomizer-J5u9QxTXDZ/data/8d9311860/4515079c1f09453faf191f2f5ef5fb57/FLAGbbbfe0ead [2022-10-17 10:52:05,808 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:52:05,811 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a595fe-a804-43df-9172-eb77901c309a/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i [2022-10-17 10:52:05,863 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a595fe-a804-43df-9172-eb77901c309a/bin/uautomizer-J5u9QxTXDZ/data/8d9311860/4515079c1f09453faf191f2f5ef5fb57/FLAGbbbfe0ead [2022-10-17 10:52:06,292 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a595fe-a804-43df-9172-eb77901c309a/bin/uautomizer-J5u9QxTXDZ/data/8d9311860/4515079c1f09453faf191f2f5ef5fb57 [2022-10-17 10:52:06,295 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:52:06,296 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:52:06,298 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:52:06,298 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:52:06,302 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:52:06,303 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:52:06" (1/1) ... [2022-10-17 10:52:06,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@674f4b7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:06, skipping insertion in model container [2022-10-17 10:52:06,304 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:52:06" (1/1) ... [2022-10-17 10:52:06,311 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:52:06,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:52:07,231 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_f8a595fe-a804-43df-9172-eb77901c309a/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] [2022-10-17 10:52:07,827 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:52:07,900 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:52:08,020 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_f8a595fe-a804-43df-9172-eb77901c309a/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] [2022-10-17 10:52:08,181 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:52:08,265 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:52:08,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:08 WrapperNode [2022-10-17 10:52:08,267 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:52:08,268 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:52:08,269 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:52:08,269 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:52:08,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:08" (1/1) ... [2022-10-17 10:52:08,359 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:08" (1/1) ... [2022-10-17 10:52:08,524 INFO L138 Inliner]: procedures = 203, calls = 1280, calls flagged for inlining = 87, calls inlined = 87, statements flattened = 3595 [2022-10-17 10:52:08,524 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:52:08,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:52:08,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:52:08,525 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:52:08,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:08" (1/1) ... [2022-10-17 10:52:08,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:08" (1/1) ... [2022-10-17 10:52:08,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:08" (1/1) ... [2022-10-17 10:52:08,582 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:08" (1/1) ... [2022-10-17 10:52:08,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:08" (1/1) ... [2022-10-17 10:52:08,733 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:08" (1/1) ... [2022-10-17 10:52:08,762 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:08" (1/1) ... [2022-10-17 10:52:08,781 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:08" (1/1) ... [2022-10-17 10:52:08,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:52:08,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:52:08,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:52:08,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:52:08,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:08" (1/1) ... [2022-10-17 10:52:08,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:52:08,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a595fe-a804-43df-9172-eb77901c309a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:52:08,854 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a595fe-a804-43df-9172-eb77901c309a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:52:08,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8a595fe-a804-43df-9172-eb77901c309a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:52:08,917 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_free [2022-10-17 10:52:08,917 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_free [2022-10-17 10:52:08,918 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_nonpositive [2022-10-17 10:52:08,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_nonpositive [2022-10-17 10:52:08,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-10-17 10:52:08,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-17 10:52:08,918 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-10-17 10:52:08,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-10-17 10:52:08,919 INFO L130 BoogieDeclarations]: Found specification of procedure get_gadget_data [2022-10-17 10:52:08,919 INFO L138 BoogieDeclarations]: Found implementation of procedure get_gadget_data [2022-10-17 10:52:08,919 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_free_request [2022-10-17 10:52:08,919 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_free_request [2022-10-17 10:52:08,919 INFO L130 BoogieDeclarations]: Found specification of procedure printer_reset_interface [2022-10-17 10:52:08,919 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_reset_interface [2022-10-17 10:52:08,920 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-10-17 10:52:08,920 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-10-17 10:52:08,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-17 10:52:08,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-17 10:52:08,920 INFO L130 BoogieDeclarations]: Found specification of procedure printer_soft_reset [2022-10-17 10:52:08,920 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_soft_reset [2022-10-17 10:52:08,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_class [2022-10-17 10:52:08,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_class [2022-10-17 10:52:08,921 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2022-10-17 10:52:08,921 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2022-10-17 10:52:08,921 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rx_reqs [2022-10-17 10:52:08,921 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rx_reqs [2022-10-17 10:52:08,921 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-10-17 10:52:08,922 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-10-17 10:52:08,922 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-17 10:52:08,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-17 10:52:08,922 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_vbus_draw [2022-10-17 10:52:08,922 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_vbus_draw [2022-10-17 10:52:08,922 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-17 10:52:08,923 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-17 10:52:08,923 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-10-17 10:52:08,923 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-10-17 10:52:08,923 INFO L130 BoogieDeclarations]: Found specification of procedure poll_wait [2022-10-17 10:52:08,923 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_wait [2022-10-17 10:52:08,924 INFO L130 BoogieDeclarations]: Found specification of procedure printer_fsync [2022-10-17 10:52:08,924 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_fsync [2022-10-17 10:52:08,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:52:08,924 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-10-17 10:52:08,924 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-10-17 10:52:08,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 10:52:08,925 INFO L130 BoogieDeclarations]: Found specification of procedure printer_open [2022-10-17 10:52:08,925 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_open [2022-10-17 10:52:08,925 INFO L130 BoogieDeclarations]: Found specification of procedure printer_bind [2022-10-17 10:52:08,925 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_bind [2022-10-17 10:52:08,925 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-10-17 10:52:08,926 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-10-17 10:52:08,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-10-17 10:52:08,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-10-17 10:52:08,926 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2022-10-17 10:52:08,927 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2022-10-17 10:52:08,927 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-10-17 10:52:08,927 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-10-17 10:52:08,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:52:08,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 10:52:08,929 INFO L130 BoogieDeclarations]: Found specification of procedure trace_kmalloc [2022-10-17 10:52:08,930 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_kmalloc [2022-10-17 10:52:08,930 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-10-17 10:52:08,930 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-10-17 10:52:08,930 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-10-17 10:52:08,930 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-10-17 10:52:08,931 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2022-10-17 10:52:08,931 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2022-10-17 10:52:08,931 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-10-17 10:52:08,931 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-10-17 10:52:08,931 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-10-17 10:52:08,932 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-10-17 10:52:08,932 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_alloc [2022-10-17 10:52:08,932 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_alloc [2022-10-17 10:52:08,932 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-10-17 10:52:08,932 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-10-17 10:52:08,932 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-10-17 10:52:08,932 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-10-17 10:52:08,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-10-17 10:52:08,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-10-17 10:52:08,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-10-17 10:52:08,934 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-10-17 10:52:08,934 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-10-17 10:52:08,934 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2022-10-17 10:52:08,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2022-10-17 10:52:08,934 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-10-17 10:52:08,935 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-10-17 10:52:08,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-17 10:52:08,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:52:08,935 INFO L130 BoogieDeclarations]: Found specification of procedure printer_poll [2022-10-17 10:52:08,935 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_poll [2022-10-17 10:52:08,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-10-17 10:52:08,936 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-10-17 10:52:08,937 INFO L130 BoogieDeclarations]: Found specification of procedure set_printer_interface [2022-10-17 10:52:08,937 INFO L138 BoogieDeclarations]: Found implementation of procedure set_printer_interface [2022-10-17 10:52:08,937 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2022-10-17 10:52:08,937 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2022-10-17 10:52:08,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:52:08,938 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_queue [2022-10-17 10:52:08,938 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_queue [2022-10-17 10:52:08,939 INFO L130 BoogieDeclarations]: Found specification of procedure set_interface [2022-10-17 10:52:08,939 INFO L138 BoogieDeclarations]: Found implementation of procedure set_interface [2022-10-17 10:52:08,940 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup_complete [2022-10-17 10:52:08,940 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup_complete [2022-10-17 10:52:08,940 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-10-17 10:52:08,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-10-17 10:52:08,940 INFO L130 BoogieDeclarations]: Found specification of procedure printer_write [2022-10-17 10:52:08,940 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_write [2022-10-17 10:52:08,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:52:08,941 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2022-10-17 10:52:08,941 INFO L130 BoogieDeclarations]: Found specification of procedure printer_unbind [2022-10-17 10:52:08,941 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_unbind [2022-10-17 10:52:08,941 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc_notrace [2022-10-17 10:52:08,942 INFO L130 BoogieDeclarations]: Found specification of procedure printer_close [2022-10-17 10:52:08,942 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_close [2022-10-17 10:52:08,942 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-10-17 10:52:08,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-10-17 10:52:08,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:52:08,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 10:52:08,943 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-10-17 10:52:08,944 INFO L130 BoogieDeclarations]: Found specification of procedure init_utsname [2022-10-17 10:52:08,946 INFO L138 BoogieDeclarations]: Found implementation of procedure init_utsname [2022-10-17 10:52:08,946 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_enable [2022-10-17 10:52:08,947 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_enable [2022-10-17 10:52:08,947 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_notrace [2022-10-17 10:52:08,948 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_notrace [2022-10-17 10:52:08,949 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-10-17 10:52:08,949 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-10-17 10:52:08,950 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-10-17 10:52:08,950 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-10-17 10:52:08,955 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_autoconfig [2022-10-17 10:52:08,956 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_autoconfig [2022-10-17 10:52:08,956 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2022-10-17 10:52:08,956 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2022-10-17 10:52:08,956 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-10-17 10:52:08,956 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-10-17 10:52:08,956 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup [2022-10-17 10:52:08,956 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup [2022-10-17 10:52:08,957 INFO L130 BoogieDeclarations]: Found specification of procedure set_gadget_data [2022-10-17 10:52:08,957 INFO L138 BoogieDeclarations]: Found implementation of procedure set_gadget_data [2022-10-17 10:52:08,957 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-10-17 10:52:08,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-10-17 10:52:08,957 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_disable [2022-10-17 10:52:08,957 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_disable [2022-10-17 10:52:08,957 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-10-17 10:52:08,958 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-10-17 10:52:08,958 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_region [2022-10-17 10:52:08,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_region [2022-10-17 10:52:08,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:52:08,958 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-10-17 10:52:08,958 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-10-17 10:52:08,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:52:08,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:52:08,959 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-10-17 10:52:08,959 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-10-17 10:52:09,632 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:52:09,638 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:52:09,920 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-10-17 10:52:28,164 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:52:28,193 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:52:28,193 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:52:28,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:52:28 BoogieIcfgContainer [2022-10-17 10:52:28,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:52:28,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:52:28,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:52:28,204 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:52:28,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:52:06" (1/3) ... [2022-10-17 10:52:28,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d3f507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:52:28, skipping insertion in model container [2022-10-17 10:52:28,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:08" (2/3) ... [2022-10-17 10:52:28,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d3f507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:52:28, skipping insertion in model container [2022-10-17 10:52:28,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:52:28" (3/3) ... [2022-10-17 10:52:28,207 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i [2022-10-17 10:52:28,225 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:52:28,225 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:52:28,315 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:52:28,322 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@112fb63d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:52:28,322 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:52:28,332 INFO L276 IsEmpty]: Start isEmpty. Operand has 1328 states, 937 states have (on average 1.4130202774813234) internal successors, (1324), 980 states have internal predecessors, (1324), 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) [2022-10-17 10:52:28,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-10-17 10:52:28,348 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:52:28,348 INFO L195 NwaCegarLoop]: 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] [2022-10-17 10:52:28,349 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:52:28,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:52:28,354 INFO L85 PathProgramCache]: Analyzing trace with hash -826194177, now seen corresponding path program 1 times [2022-10-17 10:52:28,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:52:28,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383712812] [2022-10-17 10:52:28,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:52:28,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:52:28,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:29,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:52:29,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:29,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:52:29,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:29,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:52:29,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:29,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-17 10:52:29,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:29,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-17 10:52:29,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:29,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:52:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:29,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-10-17 10:52:29,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:29,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-17 10:52:29,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:29,426 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-10-17 10:52:29,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:52:29,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383712812] [2022-10-17 10:52:29,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383712812] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:52:29,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:52:29,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:52:29,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132225526] [2022-10-17 10:52:29,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:52:29,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:52:29,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:52:29,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:52:29,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:52:29,488 INFO L87 Difference]: Start difference. First operand has 1328 states, 937 states have (on average 1.4130202774813234) internal successors, (1324), 980 states have internal predecessors, (1324), 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 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 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) [2022-10-17 10:52:31,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 10:52:33,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 10:52:41,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:52:41,261 INFO L93 Difference]: Finished difference Result 4152 states and 6323 transitions. [2022-10-17 10:52:41,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:52:41,273 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 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 58 [2022-10-17 10:52:41,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:52:41,340 INFO L225 Difference]: With dead ends: 4152 [2022-10-17 10:52:41,341 INFO L226 Difference]: Without dead ends: 2812