./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018df971-2cad-47e7-8cb4-e0ad8a437b0e/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018df971-2cad-47e7-8cb4-e0ad8a437b0e/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018df971-2cad-47e7-8cb4-e0ad8a437b0e/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018df971-2cad-47e7-8cb4-e0ad8a437b0e/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018df971-2cad-47e7-8cb4-e0ad8a437b0e/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018df971-2cad-47e7-8cb4-e0ad8a437b0e/bin/uautomizer-ZXIjhQolGL --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 4437765aefc9e8e96e3710e0e55c61aa0f0e29783186331c7ab028aba8558a0d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 04:19:02,498 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 04:19:02,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 04:19:02,559 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 04:19:02,560 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 04:19:02,565 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 04:19:02,567 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 04:19:02,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 04:19:02,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 04:19:02,578 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 04:19:02,579 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 04:19:02,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 04:19:02,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 04:19:02,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 04:19:02,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 04:19:02,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 04:19:02,596 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 04:19:02,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 04:19:02,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 04:19:02,608 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 04:19:02,611 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 04:19:02,612 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 04:19:02,616 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 04:19:02,617 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 04:19:02,620 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 04:19:02,621 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 04:19:02,621 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 04:19:02,623 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 04:19:02,624 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 04:19:02,625 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 04:19:02,626 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 04:19:02,627 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 04:19:02,628 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 04:19:02,630 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 04:19:02,631 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 04:19:02,631 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 04:19:02,632 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 04:19:02,632 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 04:19:02,632 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 04:19:02,633 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 04:19:02,634 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 04:19:02,635 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018df971-2cad-47e7-8cb4-e0ad8a437b0e/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-19 04:19:02,666 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 04:19:02,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 04:19:02,666 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 04:19:02,666 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 04:19:02,667 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 04:19:02,667 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 04:19:02,668 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 04:19:02,668 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 04:19:02,668 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 04:19:02,669 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 04:19:02,669 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 04:19:02,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 04:19:02,669 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 04:19:02,669 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 04:19:02,670 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 04:19:02,670 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 04:19:02,670 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 04:19:02,670 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 04:19:02,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 04:19:02,671 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 04:19:02,671 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 04:19:02,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:19:02,671 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 04:19:02,671 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 04:19:02,672 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 04:19:02,672 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 04:19:02,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 04:19:02,672 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 04:19:02,672 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 04:19:02,673 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 04:19:02,673 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 04:19:02,673 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_018df971-2cad-47e7-8cb4-e0ad8a437b0e/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018df971-2cad-47e7-8cb4-e0ad8a437b0e/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4437765aefc9e8e96e3710e0e55c61aa0f0e29783186331c7ab028aba8558a0d [2021-11-19 04:19:02,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 04:19:02,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 04:19:02,933 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 04:19:02,934 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 04:19:02,935 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 04:19:02,936 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018df971-2cad-47e7-8cb4-e0ad8a437b0e/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-11-19 04:19:02,994 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018df971-2cad-47e7-8cb4-e0ad8a437b0e/bin/uautomizer-ZXIjhQolGL/data/369b12d69/c95b474ea3304b369f03d0e6f1053ceb/FLAG6a20c4868 [2021-11-19 04:19:03,852 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 04:19:03,853 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018df971-2cad-47e7-8cb4-e0ad8a437b0e/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-11-19 04:19:03,964 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018df971-2cad-47e7-8cb4-e0ad8a437b0e/bin/uautomizer-ZXIjhQolGL/data/369b12d69/c95b474ea3304b369f03d0e6f1053ceb/FLAG6a20c4868 [2021-11-19 04:19:04,287 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018df971-2cad-47e7-8cb4-e0ad8a437b0e/bin/uautomizer-ZXIjhQolGL/data/369b12d69/c95b474ea3304b369f03d0e6f1053ceb [2021-11-19 04:19:04,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 04:19:04,292 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 04:19:04,293 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 04:19:04,293 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 04:19:04,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 04:19:04,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:19:04" (1/1) ... [2021-11-19 04:19:04,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dd3bbb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:19:04, skipping insertion in model container [2021-11-19 04:19:04,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:19:04" (1/1) ... [2021-11-19 04:19:04,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 04:19:04,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:19:05,603 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_018df971-2cad-47e7-8cb4-e0ad8a437b0e/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[119996,120009] [2021-11-19 04:19:06,577 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:19:06,610 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 04:19:06,743 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_018df971-2cad-47e7-8cb4-e0ad8a437b0e/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[119996,120009] [2021-11-19 04:19:07,157 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:19:07,311 INFO L208 MainTranslator]: Completed translation [2021-11-19 04:19:07,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:19:07 WrapperNode [2021-11-19 04:19:07,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 04:19:07,312 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 04:19:07,313 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 04:19:07,313 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 04:19:07,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:19:07" (1/1) ... [2021-11-19 04:19:07,438 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:19:07" (1/1) ... [2021-11-19 04:19:07,690 INFO L137 Inliner]: procedures = 371, calls = 3017, calls flagged for inlining = 198, calls inlined = 180, statements flattened = 6270 [2021-11-19 04:19:07,691 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 04:19:07,691 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 04:19:07,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 04:19:07,692 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 04:19:07,700 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:19:07" (1/1) ... [2021-11-19 04:19:07,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:19:07" (1/1) ... [2021-11-19 04:19:07,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:19:07" (1/1) ... [2021-11-19 04:19:07,770 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:19:07" (1/1) ... [2021-11-19 04:19:07,902 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:19:07" (1/1) ... [2021-11-19 04:19:07,932 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:19:07" (1/1) ... [2021-11-19 04:19:07,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:19:07" (1/1) ... [2021-11-19 04:19:08,005 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 04:19:08,006 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 04:19:08,006 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 04:19:08,007 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 04:19:08,007 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:19:07" (1/1) ... [2021-11-19 04:19:08,015 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:19:08,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018df971-2cad-47e7-8cb4-e0ad8a437b0e/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:19:08,045 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018df971-2cad-47e7-8cb4-e0ad8a437b0e/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 04:19:08,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018df971-2cad-47e7-8cb4-e0ad8a437b0e/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 04:19:08,175 INFO L130 BoogieDeclarations]: Found specification of procedure serial_break [2021-11-19 04:19:08,180 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_break [2021-11-19 04:19:08,181 INFO L130 BoogieDeclarations]: Found specification of procedure serial_proc_open [2021-11-19 04:19:08,181 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_proc_open [2021-11-19 04:19:08,181 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_throttle [2021-11-19 04:19:08,181 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_throttle [2021-11-19 04:19:08,181 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_start [2021-11-19 04:19:08,181 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_start [2021-11-19 04:19:08,181 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-11-19 04:19:08,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-11-19 04:19:08,182 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_14 [2021-11-19 04:19:08,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_14 [2021-11-19 04:19:08,182 INFO L130 BoogieDeclarations]: Found specification of procedure usb_translate_errors [2021-11-19 04:19:08,182 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_translate_errors [2021-11-19 04:19:08,182 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-19 04:19:08,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-19 04:19:08,182 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2021-11-19 04:19:08,182 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2021-11-19 04:19:08,183 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_dtr_rts [2021-11-19 04:19:08,183 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_dtr_rts [2021-11-19 04:19:08,183 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_remove [2021-11-19 04:19:08,183 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_remove [2021-11-19 04:19:08,183 INFO L130 BoogieDeclarations]: Found specification of procedure new_id_show [2021-11-19 04:19:08,183 INFO L138 BoogieDeclarations]: Found implementation of procedure new_id_show [2021-11-19 04:19:08,183 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-19 04:19:08,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-19 04:19:08,184 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write [2021-11-19 04:19:08,184 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write [2021-11-19 04:19:08,184 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-19 04:19:08,184 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-19 04:19:08,184 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-19 04:19:08,184 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-19 04:19:08,184 INFO L130 BoogieDeclarations]: Found specification of procedure serial_chars_in_buffer [2021-11-19 04:19:08,184 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_chars_in_buffer [2021-11-19 04:19:08,184 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-19 04:19:08,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-19 04:19:08,185 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2021-11-19 04:19:08,185 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2021-11-19 04:19:08,185 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2021-11-19 04:19:08,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2021-11-19 04:19:08,186 INFO L130 BoogieDeclarations]: Found specification of procedure char_buf_ptr [2021-11-19 04:19:08,186 INFO L138 BoogieDeclarations]: Found implementation of procedure char_buf_ptr [2021-11-19 04:19:08,186 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_5 [2021-11-19 04:19:08,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_5 [2021-11-19 04:19:08,186 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_activate [2021-11-19 04:19:08,186 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_activate [2021-11-19 04:19:08,187 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit_unlock [2021-11-19 04:19:08,187 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit_unlock [2021-11-19 04:19:08,187 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-19 04:19:08,187 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-19 04:19:08,187 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-19 04:19:08,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-19 04:19:08,187 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_4 [2021-11-19 04:19:08,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_4 [2021-11-19 04:19:08,188 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2021-11-19 04:19:08,188 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2021-11-19 04:19:08,188 INFO L130 BoogieDeclarations]: Found specification of procedure usb_store_new_id [2021-11-19 04:19:08,189 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_store_new_id [2021-11-19 04:19:08,189 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2021-11-19 04:19:08,190 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2021-11-19 04:19:08,190 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_int_in [2021-11-19 04:19:08,190 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_int_in [2021-11-19 04:19:08,190 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-19 04:19:08,191 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-19 04:19:08,192 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 04:19:08,192 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 04:19:08,192 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_poison_urbs [2021-11-19 04:19:08,192 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_poison_urbs [2021-11-19 04:19:08,193 INFO L130 BoogieDeclarations]: Found specification of procedure serial_hangup [2021-11-19 04:19:08,193 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_hangup [2021-11-19 04:19:08,193 INFO L130 BoogieDeclarations]: Found specification of procedure serial_ioctl [2021-11-19 04:19:08,193 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_ioctl [2021-11-19 04:19:08,193 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write_room [2021-11-19 04:19:08,194 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write_room [2021-11-19 04:19:08,194 INFO L130 BoogieDeclarations]: Found specification of procedure new_id_store [2021-11-19 04:19:08,194 INFO L138 BoogieDeclarations]: Found implementation of procedure new_id_store [2021-11-19 04:19:08,194 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___2 [2021-11-19 04:19:08,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___2 [2021-11-19 04:19:08,194 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2021-11-19 04:19:08,194 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2021-11-19 04:19:08,195 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-19 04:19:08,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-19 04:19:08,195 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-19 04:19:08,195 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-19 04:19:08,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 04:19:08,195 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-19 04:19:08,195 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-19 04:19:08,195 INFO L130 BoogieDeclarations]: Found specification of procedure serial_unthrottle [2021-11-19 04:19:08,196 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_unthrottle [2021-11-19 04:19:08,196 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unpoison_urb [2021-11-19 04:19:08,196 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unpoison_urb [2021-11-19 04:19:08,196 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urbs [2021-11-19 04:19:08,197 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urbs [2021-11-19 04:19:08,197 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_probe [2021-11-19 04:19:08,197 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_probe [2021-11-19 04:19:08,197 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2021-11-19 04:19:08,198 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2021-11-19 04:19:08,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 04:19:08,198 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-19 04:19:08,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-19 04:19:08,199 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-19 04:19:08,199 INFO L130 BoogieDeclarations]: Found specification of procedure serial_get_icount [2021-11-19 04:19:08,200 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_get_icount [2021-11-19 04:19:08,200 INFO L130 BoogieDeclarations]: Found specification of procedure serial_throttle [2021-11-19 04:19:08,200 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_throttle [2021-11-19 04:19:08,200 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2021-11-19 04:19:08,200 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2021-11-19 04:19:08,200 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-19 04:19:08,200 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-19 04:19:08,200 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2021-11-19 04:19:08,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2021-11-19 04:19:08,201 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urb [2021-11-19 04:19:08,201 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urb [2021-11-19 04:19:08,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 04:19:08,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 04:19:08,201 INFO L130 BoogieDeclarations]: Found specification of procedure try_module_get [2021-11-19 04:19:08,201 INFO L138 BoogieDeclarations]: Found implementation of procedure try_module_get [2021-11-19 04:19:08,202 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-19 04:19:08,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-19 04:19:08,205 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2021-11-19 04:19:08,205 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2021-11-19 04:19:08,205 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-19 04:19:08,205 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-19 04:19:08,206 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_resume [2021-11-19 04:19:08,206 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_resume [2021-11-19 04:19:08,207 INFO L130 BoogieDeclarations]: Found specification of procedure serial_cleanup [2021-11-19 04:19:08,208 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_cleanup [2021-11-19 04:19:08,208 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-19 04:19:08,213 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-19 04:19:08,213 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-19 04:19:08,213 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-19 04:19:08,213 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-19 04:19:08,213 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-19 04:19:08,214 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_carrier_raised [2021-11-19 04:19:08,214 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_carrier_raised [2021-11-19 04:19:08,214 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_uint_must_check_helper [2021-11-19 04:19:08,214 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_uint_must_check_helper [2021-11-19 04:19:08,214 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2021-11-19 04:19:08,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2021-11-19 04:19:08,214 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-19 04:19:08,214 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-19 04:19:08,214 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmget [2021-11-19 04:19:08,215 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmget [2021-11-19 04:19:08,215 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_bulk_callback [2021-11-19 04:19:08,215 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_bulk_callback [2021-11-19 04:19:08,215 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-19 04:19:08,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-19 04:19:08,215 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2021-11-19 04:19:08,215 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2021-11-19 04:19:08,215 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-19 04:19:08,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-19 04:19:08,216 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2021-11-19 04:19:08,216 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2021-11-19 04:19:08,216 INFO L130 BoogieDeclarations]: Found specification of procedure bus_unregister [2021-11-19 04:19:08,216 INFO L138 BoogieDeclarations]: Found implementation of procedure bus_unregister [2021-11-19 04:19:08,216 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_reset_resume [2021-11-19 04:19:08,216 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_reset_resume [2021-11-19 04:19:08,216 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_read_bulk_callback [2021-11-19 04:19:08,216 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_read_bulk_callback [2021-11-19 04:19:08,216 INFO L130 BoogieDeclarations]: Found specification of procedure usb_poison_urb [2021-11-19 04:19:08,217 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_poison_urb [2021-11-19 04:19:08,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-19 04:19:08,217 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2021-11-19 04:19:08,217 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2021-11-19 04:19:08,217 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2021-11-19 04:19:08,217 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2021-11-19 04:19:08,217 INFO L130 BoogieDeclarations]: Found specification of procedure serial_wait_until_sent [2021-11-19 04:19:08,217 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_wait_until_sent [2021-11-19 04:19:08,217 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-19 04:19:08,217 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-19 04:19:08,218 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_match [2021-11-19 04:19:08,218 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_match [2021-11-19 04:19:08,218 INFO L130 BoogieDeclarations]: Found specification of procedure serial_open [2021-11-19 04:19:08,218 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_open [2021-11-19 04:19:08,218 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-19 04:19:08,218 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-19 04:19:08,219 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-11-19 04:19:08,219 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-11-19 04:19:08,219 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2021-11-19 04:19:08,219 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2021-11-19 04:19:08,219 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_shutdown [2021-11-19 04:19:08,219 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_shutdown [2021-11-19 04:19:08,219 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-19 04:19:08,219 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-19 04:19:08,219 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_41 [2021-11-19 04:19:08,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_41 [2021-11-19 04:19:08,220 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_42 [2021-11-19 04:19:08,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_42 [2021-11-19 04:19:08,220 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2021-11-19 04:19:08,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2021-11-19 04:19:08,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-19 04:19:08,220 INFO L130 BoogieDeclarations]: Found specification of procedure serial_set_termios [2021-11-19 04:19:08,222 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_set_termios [2021-11-19 04:19:08,222 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2021-11-19 04:19:08,222 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2021-11-19 04:19:08,222 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2021-11-19 04:19:08,222 INFO L138 BoogieDeclarations]: Found implementation of procedure single_release [2021-11-19 04:19:08,222 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-19 04:19:08,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-19 04:19:08,222 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2021-11-19 04:19:08,222 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2021-11-19 04:19:08,223 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_unthrottle [2021-11-19 04:19:08,223 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_unthrottle [2021-11-19 04:19:08,223 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_get_by_minor [2021-11-19 04:19:08,223 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_get_by_minor [2021-11-19 04:19:08,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 04:19:08,223 INFO L130 BoogieDeclarations]: Found specification of procedure serial_install [2021-11-19 04:19:08,223 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_install [2021-11-19 04:19:08,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 04:19:08,223 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-19 04:19:08,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-19 04:19:08,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 04:19:08,224 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-19 04:19:08,224 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_int_urb_18 [2021-11-19 04:19:08,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_int_urb_18 [2021-11-19 04:19:08,224 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put_4 [2021-11-19 04:19:08,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put_4 [2021-11-19 04:19:08,224 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 04:19:08,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 04:19:08,224 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-19 04:19:08,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-19 04:19:08,225 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmset [2021-11-19 04:19:08,225 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmset [2021-11-19 04:19:08,225 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-19 04:19:08,225 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-19 04:19:08,225 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2021-11-19 04:19:08,225 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2021-11-19 04:19:08,226 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_22 [2021-11-19 04:19:08,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_22 [2021-11-19 04:19:08,226 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_put [2021-11-19 04:19:08,226 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_put [2021-11-19 04:19:08,226 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_unpoison_port_urbs [2021-11-19 04:19:08,226 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_unpoison_port_urbs [2021-11-19 04:19:08,226 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write [2021-11-19 04:19:08,226 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write [2021-11-19 04:19:08,226 INFO L130 BoogieDeclarations]: Found specification of procedure idr_remove [2021-11-19 04:19:08,227 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_remove [2021-11-19 04:19:08,227 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-19 04:19:08,227 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-19 04:19:08,227 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_serial [2021-11-19 04:19:08,227 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_serial [2021-11-19 04:19:08,227 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-19 04:19:08,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-19 04:19:08,227 INFO L130 BoogieDeclarations]: Found specification of procedure get_iface_id [2021-11-19 04:19:08,227 INFO L138 BoogieDeclarations]: Found implementation of procedure get_iface_id [2021-11-19 04:19:08,228 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-19 04:19:08,232 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-19 04:19:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2021-11-19 04:19:08,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2021-11-19 04:19:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 04:19:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 04:19:08,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 04:19:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2021-11-19 04:19:08,232 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2021-11-19 04:19:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_out [2021-11-19 04:19:08,234 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_out [2021-11-19 04:19:08,234 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-19 04:19:08,234 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-19 04:19:09,135 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 04:19:09,142 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 04:19:09,644 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-19 04:19:10,388 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___2FINAL: assume true; [2021-11-19 04:19:19,514 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 04:19:19,535 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 04:19:19,535 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 04:19:19,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:19:19 BoogieIcfgContainer [2021-11-19 04:19:19,541 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 04:19:19,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 04:19:19,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 04:19:19,547 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 04:19:19,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:19:04" (1/3) ... [2021-11-19 04:19:19,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@462033c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:19:19, skipping insertion in model container [2021-11-19 04:19:19,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:19:07" (2/3) ... [2021-11-19 04:19:19,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@462033c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:19:19, skipping insertion in model container [2021-11-19 04:19:19,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:19:19" (3/3) ... [2021-11-19 04:19:19,550 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-11-19 04:19:19,555 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 04:19:19,555 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 04:19:19,610 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 04:19:19,616 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 04:19:19,616 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 04:19:19,679 INFO L276 IsEmpty]: Start isEmpty. Operand has 2105 states, 1518 states have (on average 1.3399209486166008) internal successors, (2034), 1559 states have internal predecessors, (2034), 465 states have call successors, (465), 122 states have call predecessors, (465), 120 states have return successors, (451), 440 states have call predecessors, (451), 451 states have call successors, (451) [2021-11-19 04:19:19,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-19 04:19:19,695 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:19:19,696 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:19:19,697 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:19:19,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:19:19,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1989796788, now seen corresponding path program 1 times [2021-11-19 04:19:19,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:19:19,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933956437] [2021-11-19 04:19:19,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:19:19,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:19:20,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:19:20,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 04:19:20,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:19:20,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-19 04:19:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:19:20,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-19 04:19:20,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:19:20,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-19 04:19:20,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:19:20,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-19 04:19:20,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:19:20,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-19 04:19:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:19:20,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-19 04:19:20,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:19:20,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-19 04:19:20,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:19:20,640 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-19 04:19:20,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:19:20,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933956437] [2021-11-19 04:19:20,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933956437] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:19:20,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:19:20,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 04:19:20,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483453343] [2021-11-19 04:19:20,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:19:20,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:19:20,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:19:20,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:19:20,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:19:20,696 INFO L87 Difference]: Start difference. First operand has 2105 states, 1518 states have (on average 1.3399209486166008) internal successors, (2034), 1559 states have internal predecessors, (2034), 465 states have call successors, (465), 122 states have call predecessors, (465), 120 states have return successors, (451), 440 states have call predecessors, (451), 451 states have call successors, (451) Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-19 04:19:22,772 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:19:24,221 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:19:28,196 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:19:34,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:19:34,518 INFO L93 Difference]: Finished difference Result 6691 states and 9849 transitions. [2021-11-19 04:19:34,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 04:19:34,521 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 69 [2021-11-19 04:19:34,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:19:34,600 INFO L225 Difference]: With dead ends: 6691 [2021-11-19 04:19:34,600 INFO L226 Difference]: Without dead ends: 4554 [2021-11-19 04:19:34,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:19:34,634 INFO L933 BasicCegarLoop]: 3159 mSDtfsCounter, 4027 mSDsluCounter, 3903 mSDsCounter, 0 mSdLazyCounter, 1771 mSolverCounterSat, 1412 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4350 SdHoareTripleChecker+Valid, 7062 SdHoareTripleChecker+Invalid, 3185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1412 IncrementalHoareTripleChecker+Valid, 1771 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2021-11-19 04:19:34,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4350 Valid, 7062 Invalid, 3185 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1412 Valid, 1771 Invalid, 2 Unknown, 0 Unchecked, 13.2s Time] [2021-11-19 04:19:34,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4554 states. [2021-11-19 04:19:34,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4554 to 4048. [2021-11-19 04:19:34,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4048 states, 2945 states have (on average 1.33276740237691) internal successors, (3925), 2988 states have internal predecessors, (3925), 866 states have call successors, (866), 237 states have call predecessors, (866), 236 states have return successors, (859), 837 states have call predecessors, (859), 859 states have call successors, (859) [2021-11-19 04:19:35,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4048 states to 4048 states and 5650 transitions. [2021-11-19 04:19:35,027 INFO L78 Accepts]: Start accepts. Automaton has 4048 states and 5650 transitions. Word has length 69 [2021-11-19 04:19:35,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:19:35,029 INFO L470 AbstractCegarLoop]: Abstraction has 4048 states and 5650 transitions. [2021-11-19 04:19:35,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-19 04:19:35,029 INFO L276 IsEmpty]: Start isEmpty. Operand 4048 states and 5650 transitions. [2021-11-19 04:19:35,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-19 04:19:35,052 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:19:35,052 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:19:35,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 04:19:35,053 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:19:35,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:19:35,055 INFO L85 PathProgramCache]: Analyzing trace with hash -2119451424, now seen corresponding path program 1 times [2021-11-19 04:19:35,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:19:35,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648382062] [2021-11-19 04:19:35,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:19:35,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:19:35,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:19:35,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 04:19:35,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:19:35,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-19 04:19:35,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:19:35,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-19 04:19:35,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:19:35,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-19 04:19:35,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:19:35,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-19 04:19:35,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:19:35,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-19 04:19:35,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:19:35,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-19 04:19:35,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:19:35,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-19 04:19:35,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:19:35,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-19 04:19:35,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:19:35,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-11-19 04:19:35,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:19:35,721 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-19 04:19:35,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:19:35,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648382062] [2021-11-19 04:19:35,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648382062] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:19:35,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:19:35,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 04:19:35,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643928235] [2021-11-19 04:19:35,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:19:35,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:19:35,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:19:35,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:19:35,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:19:35,725 INFO L87 Difference]: Start difference. First operand 4048 states and 5650 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 04:19:37,788 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:19:41,714 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:19:48,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:19:48,786 INFO L93 Difference]: Finished difference Result 12746 states and 17994 transitions. [2021-11-19 04:19:48,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 04:19:48,787 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 89 [2021-11-19 04:19:48,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:19:48,869 INFO L225 Difference]: With dead ends: 12746 [2021-11-19 04:19:48,869 INFO L226 Difference]: Without dead ends: 8719 [2021-11-19 04:19:48,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:19:48,897 INFO L933 BasicCegarLoop]: 3104 mSDtfsCounter, 3824 mSDsluCounter, 3783 mSDsCounter, 0 mSdLazyCounter, 1856 mSolverCounterSat, 1358 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4153 SdHoareTripleChecker+Valid, 6887 SdHoareTripleChecker+Invalid, 3216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1358 IncrementalHoareTripleChecker+Valid, 1856 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2021-11-19 04:19:48,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4153 Valid, 6887 Invalid, 3216 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1358 Valid, 1856 Invalid, 2 Unknown, 0 Unchecked, 12.5s Time] [2021-11-19 04:19:48,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8719 states. [2021-11-19 04:19:49,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8719 to 7670. [2021-11-19 04:19:49,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7670 states, 5584 states have (on average 1.3273638968481376) internal successors, (7412), 5665 states have internal predecessors, (7412), 1627 states have call successors, (1627), 459 states have call predecessors, (1627), 458 states have return successors, (1620), 1575 states have call predecessors, (1620), 1620 states have call successors, (1620) [2021-11-19 04:19:49,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7670 states to 7670 states and 10659 transitions. [2021-11-19 04:19:49,377 INFO L78 Accepts]: Start accepts. Automaton has 7670 states and 10659 transitions. Word has length 89 [2021-11-19 04:19:49,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:19:49,378 INFO L470 AbstractCegarLoop]: Abstraction has 7670 states and 10659 transitions. [2021-11-19 04:19:49,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 04:19:49,379 INFO L276 IsEmpty]: Start isEmpty. Operand 7670 states and 10659 transitions. [2021-11-19 04:19:49,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-19 04:19:49,384 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:19:49,385 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:19:49,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 04:19:49,385 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:19:49,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:19:49,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1481995065, now seen corresponding path program 1 times [2021-11-19 04:19:49,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:19:49,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099991319] [2021-11-19 04:19:49,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:19:49,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:19:49,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:19:49,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 04:19:49,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:19:49,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-19 04:19:49,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:19:49,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-19 04:19:49,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:19:49,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-19 04:19:49,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:19:49,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-19 04:19:49,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:19:49,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-19 04:19:49,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:19:49,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-19 04:19:49,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:19:49,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-19 04:19:49,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:19:49,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-19 04:19:49,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:19:49,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-19 04:19:49,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:19:49,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:19:49,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:19:49,783 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-11-19 04:19:49,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:19:49,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099991319] [2021-11-19 04:19:49,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099991319] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:19:49,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:19:49,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 04:19:49,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730407066] [2021-11-19 04:19:49,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:19:49,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:19:49,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:19:49,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:19:49,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:19:49,786 INFO L87 Difference]: Start difference. First operand 7670 states and 10659 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-19 04:19:51,845 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:19:53,898 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:19:58,117 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:20:09,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:20:09,215 INFO L93 Difference]: Finished difference Result 29996 states and 43373 transitions. [2021-11-19 04:20:09,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 04:20:09,215 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 97 [2021-11-19 04:20:09,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:20:09,391 INFO L225 Difference]: With dead ends: 29996 [2021-11-19 04:20:09,392 INFO L226 Difference]: Without dead ends: 22347 [2021-11-19 04:20:09,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-19 04:20:09,442 INFO L933 BasicCegarLoop]: 3151 mSDtfsCounter, 7756 mSDsluCounter, 4855 mSDsCounter, 0 mSdLazyCounter, 4036 mSolverCounterSat, 4150 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8206 SdHoareTripleChecker+Valid, 8006 SdHoareTripleChecker+Invalid, 8189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4150 IncrementalHoareTripleChecker+Valid, 4036 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.6s IncrementalHoareTripleChecker+Time [2021-11-19 04:20:09,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8206 Valid, 8006 Invalid, 8189 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4150 Valid, 4036 Invalid, 3 Unknown, 0 Unchecked, 18.6s Time] [2021-11-19 04:20:09,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22347 states. [2021-11-19 04:20:10,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22347 to 15170. [2021-11-19 04:20:10,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15170 states, 11050 states have (on average 1.3270588235294118) internal successors, (14664), 11207 states have internal predecessors, (14664), 3207 states have call successors, (3207), 913 states have call predecessors, (3207), 912 states have return successors, (3200), 3109 states have call predecessors, (3200), 3200 states have call successors, (3200) [2021-11-19 04:20:10,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15170 states to 15170 states and 21071 transitions. [2021-11-19 04:20:10,563 INFO L78 Accepts]: Start accepts. Automaton has 15170 states and 21071 transitions. Word has length 97 [2021-11-19 04:20:10,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:20:10,564 INFO L470 AbstractCegarLoop]: Abstraction has 15170 states and 21071 transitions. [2021-11-19 04:20:10,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-19 04:20:10,565 INFO L276 IsEmpty]: Start isEmpty. Operand 15170 states and 21071 transitions. [2021-11-19 04:20:10,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-19 04:20:10,571 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:20:10,572 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:20:10,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 04:20:10,572 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:20:10,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:20:10,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1715328829, now seen corresponding path program 1 times [2021-11-19 04:20:10,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:20:10,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898021021] [2021-11-19 04:20:10,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:20:10,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:20:10,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:10,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 04:20:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:10,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-19 04:20:10,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:10,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-19 04:20:10,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:10,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-19 04:20:10,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:10,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-19 04:20:10,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:10,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-19 04:20:10,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:10,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-19 04:20:10,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:10,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-19 04:20:10,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:10,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-19 04:20:10,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:10,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:20:10,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:10,951 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-19 04:20:10,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:20:10,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898021021] [2021-11-19 04:20:10,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898021021] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:20:10,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:20:10,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 04:20:10,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098873439] [2021-11-19 04:20:10,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:20:10,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:20:10,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:20:10,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:20:10,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:20:10,955 INFO L87 Difference]: Start difference. First operand 15170 states and 21071 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 04:20:13,013 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:20:15,070 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:20:17,815 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:20:29,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:20:29,746 INFO L93 Difference]: Finished difference Result 58956 states and 86037 transitions. [2021-11-19 04:20:29,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 04:20:29,746 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 93 [2021-11-19 04:20:29,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:20:30,033 INFO L225 Difference]: With dead ends: 58956 [2021-11-19 04:20:30,034 INFO L226 Difference]: Without dead ends: 43807 [2021-11-19 04:20:30,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-19 04:20:30,117 INFO L933 BasicCegarLoop]: 3074 mSDtfsCounter, 7607 mSDsluCounter, 4931 mSDsCounter, 0 mSdLazyCounter, 4099 mSolverCounterSat, 4122 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8037 SdHoareTripleChecker+Valid, 8005 SdHoareTripleChecker+Invalid, 8224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4122 IncrementalHoareTripleChecker+Valid, 4099 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2021-11-19 04:20:30,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8037 Valid, 8005 Invalid, 8224 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4122 Valid, 4099 Invalid, 3 Unknown, 0 Unchecked, 17.5s Time] [2021-11-19 04:20:30,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43807 states. [2021-11-19 04:20:32,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43807 to 38538. [2021-11-19 04:20:32,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38538 states, 28142 states have (on average 1.3164664913652193) internal successors, (37048), 28354 states have internal predecessors, (37048), 7991 states have call successors, (7991), 1797 states have call predecessors, (7991), 2404 states have return successors, (10352), 8534 states have call predecessors, (10352), 7984 states have call successors, (10352) [2021-11-19 04:20:32,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38538 states to 38538 states and 55391 transitions. [2021-11-19 04:20:32,510 INFO L78 Accepts]: Start accepts. Automaton has 38538 states and 55391 transitions. Word has length 93 [2021-11-19 04:20:32,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:20:32,511 INFO L470 AbstractCegarLoop]: Abstraction has 38538 states and 55391 transitions. [2021-11-19 04:20:32,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 04:20:32,512 INFO L276 IsEmpty]: Start isEmpty. Operand 38538 states and 55391 transitions. [2021-11-19 04:20:32,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-19 04:20:32,514 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:20:32,515 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:20:32,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 04:20:32,515 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:20:32,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:20:32,516 INFO L85 PathProgramCache]: Analyzing trace with hash -2146301045, now seen corresponding path program 1 times [2021-11-19 04:20:32,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:20:32,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732463679] [2021-11-19 04:20:32,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:20:32,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:20:32,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:32,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 04:20:32,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:32,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-19 04:20:32,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:32,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-19 04:20:32,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:32,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-19 04:20:32,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:32,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-19 04:20:32,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:32,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-19 04:20:32,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:32,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-19 04:20:32,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:32,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-19 04:20:32,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:32,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-19 04:20:32,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:32,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-19 04:20:32,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:32,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:20:32,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:32,914 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-19 04:20:32,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:20:32,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732463679] [2021-11-19 04:20:32,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732463679] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:20:32,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:20:32,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 04:20:32,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169066750] [2021-11-19 04:20:32,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:20:32,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:20:32,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:20:32,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:20:32,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:20:32,917 INFO L87 Difference]: Start difference. First operand 38538 states and 55391 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-19 04:20:34,978 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:20:44,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:20:44,632 INFO L93 Difference]: Finished difference Result 129915 states and 206472 transitions. [2021-11-19 04:20:44,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:20:44,633 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 92 [2021-11-19 04:20:44,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:20:45,583 INFO L225 Difference]: With dead ends: 129915 [2021-11-19 04:20:45,583 INFO L226 Difference]: Without dead ends: 91398 [2021-11-19 04:20:45,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:20:45,889 INFO L933 BasicCegarLoop]: 3300 mSDtfsCounter, 5912 mSDsluCounter, 4254 mSDsCounter, 0 mSdLazyCounter, 1895 mSolverCounterSat, 2841 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6223 SdHoareTripleChecker+Valid, 7554 SdHoareTripleChecker+Invalid, 4737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2841 IncrementalHoareTripleChecker+Valid, 1895 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2021-11-19 04:20:45,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6223 Valid, 7554 Invalid, 4737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2841 Valid, 1895 Invalid, 1 Unknown, 0 Unchecked, 8.5s Time] [2021-11-19 04:20:45,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91398 states. [2021-11-19 04:20:50,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91398 to 83018. [2021-11-19 04:20:50,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83018 states, 60770 states have (on average 1.3114530195820306) internal successors, (79697), 61116 states have internal predecessors, (79697), 16759 states have call successors, (16759), 3593 states have call predecessors, (16759), 5488 states have return successors, (29268), 18636 states have call predecessors, (29268), 16752 states have call successors, (29268) [2021-11-19 04:20:51,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83018 states to 83018 states and 125724 transitions. [2021-11-19 04:20:51,880 INFO L78 Accepts]: Start accepts. Automaton has 83018 states and 125724 transitions. Word has length 92 [2021-11-19 04:20:51,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:20:51,881 INFO L470 AbstractCegarLoop]: Abstraction has 83018 states and 125724 transitions. [2021-11-19 04:20:51,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-19 04:20:51,894 INFO L276 IsEmpty]: Start isEmpty. Operand 83018 states and 125724 transitions. [2021-11-19 04:20:51,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-19 04:20:51,900 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:20:51,900 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:20:51,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-19 04:20:51,901 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:20:51,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:20:51,901 INFO L85 PathProgramCache]: Analyzing trace with hash -2112276362, now seen corresponding path program 1 times [2021-11-19 04:20:51,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:20:51,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801676127] [2021-11-19 04:20:51,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:20:51,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:20:52,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:52,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 04:20:52,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:52,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-19 04:20:52,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:52,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-19 04:20:52,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:52,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-19 04:20:52,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:52,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-19 04:20:52,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:52,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-19 04:20:52,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:52,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-19 04:20:52,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:52,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-19 04:20:52,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:52,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-19 04:20:52,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:52,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-19 04:20:52,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:52,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:20:52,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:20:52,340 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-19 04:20:52,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:20:52,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801676127] [2021-11-19 04:20:52,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801676127] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:20:52,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:20:52,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 04:20:52,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990298738] [2021-11-19 04:20:52,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:20:52,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:20:52,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:20:52,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:20:52,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:20:52,344 INFO L87 Difference]: Start difference. First operand 83018 states and 125724 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-19 04:20:54,406 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:21:09,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:21:09,208 INFO L93 Difference]: Finished difference Result 265587 states and 452903 transitions. [2021-11-19 04:21:09,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:21:09,209 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 93 [2021-11-19 04:21:09,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:21:10,910 INFO L225 Difference]: With dead ends: 265587 [2021-11-19 04:21:10,910 INFO L226 Difference]: Without dead ends: 182590 [2021-11-19 04:21:11,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:21:11,511 INFO L933 BasicCegarLoop]: 3462 mSDtfsCounter, 5662 mSDsluCounter, 4348 mSDsCounter, 0 mSdLazyCounter, 1927 mSolverCounterSat, 2733 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5979 SdHoareTripleChecker+Valid, 7810 SdHoareTripleChecker+Invalid, 4661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2733 IncrementalHoareTripleChecker+Valid, 1927 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-11-19 04:21:11,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5979 Valid, 7810 Invalid, 4661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2733 Valid, 1927 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2021-11-19 04:21:11,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182590 states. [2021-11-19 04:21:19,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182590 to 167915. [2021-11-19 04:21:19,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167915 states, 122891 states have (on average 1.3083871072739257) internal successors, (160789), 123505 states have internal predecessors, (160789), 33751 states have call successors, (33751), 7185 states have call predecessors, (33751), 11272 states have return successors, (74860), 37880 states have call predecessors, (74860), 33744 states have call successors, (74860) [2021-11-19 04:21:21,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167915 states to 167915 states and 269400 transitions. [2021-11-19 04:21:21,968 INFO L78 Accepts]: Start accepts. Automaton has 167915 states and 269400 transitions. Word has length 93 [2021-11-19 04:21:21,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:21:21,969 INFO L470 AbstractCegarLoop]: Abstraction has 167915 states and 269400 transitions. [2021-11-19 04:21:21,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-19 04:21:21,970 INFO L276 IsEmpty]: Start isEmpty. Operand 167915 states and 269400 transitions. [2021-11-19 04:21:21,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-19 04:21:21,973 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:21:21,973 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:21:21,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-19 04:21:21,974 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:21:21,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:21:21,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1057506322, now seen corresponding path program 1 times [2021-11-19 04:21:21,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:21:21,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490888471] [2021-11-19 04:21:21,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:21:21,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:21:22,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:21:22,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 04:21:22,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:21:22,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-19 04:21:22,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:21:22,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-19 04:21:22,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:21:22,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-19 04:21:22,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:21:22,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-19 04:21:22,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:21:22,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-19 04:21:22,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:21:22,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-19 04:21:22,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:21:22,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-19 04:21:22,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:21:22,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-19 04:21:22,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:21:22,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-19 04:21:22,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:21:22,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:21:22,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:21:22,331 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-19 04:21:22,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:21:22,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490888471] [2021-11-19 04:21:22,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490888471] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:21:22,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:21:22,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 04:21:22,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796968548] [2021-11-19 04:21:22,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:21:22,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:21:22,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:21:22,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:21:22,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:21:22,334 INFO L87 Difference]: Start difference. First operand 167915 states and 269400 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-19 04:21:24,393 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:21:26,450 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:21:29,189 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:21:43,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:21:43,677 INFO L93 Difference]: Finished difference Result 182588 states and 299012 transitions. [2021-11-19 04:21:43,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:21:43,678 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 94 [2021-11-19 04:21:43,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:21:44,837 INFO L225 Difference]: With dead ends: 182588 [2021-11-19 04:21:44,838 INFO L226 Difference]: Without dead ends: 182585 [2021-11-19 04:21:44,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:21:44,929 INFO L933 BasicCegarLoop]: 3468 mSDtfsCounter, 4429 mSDsluCounter, 5797 mSDsCounter, 0 mSdLazyCounter, 2922 mSolverCounterSat, 1584 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4746 SdHoareTripleChecker+Valid, 9265 SdHoareTripleChecker+Invalid, 4509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1584 IncrementalHoareTripleChecker+Valid, 2922 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:21:44,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4746 Valid, 9265 Invalid, 4509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1584 Valid, 2922 Invalid, 3 Unknown, 0 Unchecked, 15.1s Time] [2021-11-19 04:21:45,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182585 states.