./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 ac653d5d4bd645822c87d49861fb2a5e304e57a9bdc7e425845f1dc10a0731d2 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:39:51,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:39:51,322 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:39:51,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:39:51,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:39:51,357 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:39:51,358 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:39:51,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:39:51,361 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:39:51,362 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:39:51,363 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:39:51,364 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:39:51,364 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:39:51,365 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:39:51,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:39:51,367 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:39:51,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:39:51,368 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:39:51,370 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:39:51,371 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:39:51,372 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:39:51,373 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:39:51,373 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:39:51,374 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:39:51,376 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:39:51,383 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:39:51,383 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:39:51,385 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:39:51,386 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:39:51,386 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:39:51,387 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:39:51,387 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:39:51,388 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:39:51,389 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:39:51,390 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:39:51,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:39:51,392 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:39:51,393 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:39:51,393 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:39:51,394 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:39:51,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:39:51,395 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 17:39:51,420 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:39:51,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:39:51,420 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:39:51,421 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:39:51,421 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:39:51,421 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:39:51,422 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:39:51,422 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:39:51,422 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:39:51,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:39:51,423 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 17:39:51,423 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:39:51,423 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:39:51,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:39:51,424 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:39:51,424 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:39:51,424 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:39:51,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:39:51,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:39:51,424 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:39:51,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:39:51,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:39:51,425 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:39:51,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:39:51,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:39:51,425 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 17:39:51,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 17:39:51,426 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:39:51,426 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:39:51,426 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:39:51,426 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:39:51,426 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac653d5d4bd645822c87d49861fb2a5e304e57a9bdc7e425845f1dc10a0731d2 [2021-12-14 17:39:51,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:39:51,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:39:51,637 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:39:51,638 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:39:51,638 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:39:51,639 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i [2021-12-14 17:39:51,693 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7a062504/799be453be41484880edcba024079d19/FLAG5e1ae879d [2021-12-14 17:39:52,290 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:39:52,291 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i [2021-12-14 17:39:52,329 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7a062504/799be453be41484880edcba024079d19/FLAG5e1ae879d [2021-12-14 17:39:52,427 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7a062504/799be453be41484880edcba024079d19 [2021-12-14 17:39:52,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:39:52,432 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:39:52,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:39:52,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:39:52,437 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:39:52,438 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:39:52" (1/1) ... [2021-12-14 17:39:52,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77dffdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:39:52, skipping insertion in model container [2021-12-14 17:39:52,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:39:52" (1/1) ... [2021-12-14 17:39:52,444 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:39:52,547 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:39:53,825 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i[258672,258685] [2021-12-14 17:39:53,897 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:39:53,938 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:39:54,262 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i[258672,258685] [2021-12-14 17:39:54,270 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:39:54,356 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:39:54,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:39:54 WrapperNode [2021-12-14 17:39:54,358 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:39:54,359 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:39:54,359 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:39:54,359 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:39:54,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:39:54" (1/1) ... [2021-12-14 17:39:54,438 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:39:54" (1/1) ... [2021-12-14 17:39:54,591 INFO L137 Inliner]: procedures = 373, calls = 2971, calls flagged for inlining = 172, calls inlined = 164, statements flattened = 5915 [2021-12-14 17:39:54,592 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:39:54,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:39:54,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:39:54,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:39:54,599 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:39:54" (1/1) ... [2021-12-14 17:39:54,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:39:54" (1/1) ... [2021-12-14 17:39:54,646 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:39:54" (1/1) ... [2021-12-14 17:39:54,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:39:54" (1/1) ... [2021-12-14 17:39:54,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:39:54" (1/1) ... [2021-12-14 17:39:54,799 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:39:54" (1/1) ... [2021-12-14 17:39:54,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:39:54" (1/1) ... [2021-12-14 17:39:54,847 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:39:54,848 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:39:54,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:39:54,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:39:54,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:39:54" (1/1) ... [2021-12-14 17:39:54,856 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:39:54,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:39:54,877 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 17:39:54,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 17:39:54,905 INFO L130 BoogieDeclarations]: Found specification of procedure serial_break [2021-12-14 17:39:54,905 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_break [2021-12-14 17:39:54,905 INFO L130 BoogieDeclarations]: Found specification of procedure serial_proc_open [2021-12-14 17:39:54,906 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_proc_open [2021-12-14 17:39:54,906 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_throttle [2021-12-14 17:39:54,906 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_throttle [2021-12-14 17:39:54,906 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_start [2021-12-14 17:39:54,906 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_start [2021-12-14 17:39:54,906 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2021-12-14 17:39:54,906 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2021-12-14 17:39:54,906 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-12-14 17:39:54,907 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-12-14 17:39:54,907 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-12-14 17:39:54,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-12-14 17:39:54,907 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-12-14 17:39:54,907 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-12-14 17:39:54,907 INFO L130 BoogieDeclarations]: Found specification of procedure usb_translate_errors [2021-12-14 17:39:54,907 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_translate_errors [2021-12-14 17:39:54,907 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2021-12-14 17:39:54,908 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2021-12-14 17:39:54,908 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_dtr_rts [2021-12-14 17:39:54,908 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_dtr_rts [2021-12-14 17:39:54,908 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_remove [2021-12-14 17:39:54,908 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_remove [2021-12-14 17:39:54,908 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write [2021-12-14 17:39:54,908 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write [2021-12-14 17:39:54,908 INFO L130 BoogieDeclarations]: Found specification of procedure serial_chars_in_buffer [2021-12-14 17:39:54,909 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_chars_in_buffer [2021-12-14 17:39:54,909 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 17:39:54,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 17:39:54,909 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2021-12-14 17:39:54,909 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2021-12-14 17:39:54,909 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_activate [2021-12-14 17:39:54,909 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_activate [2021-12-14 17:39:54,909 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit_unlock [2021-12-14 17:39:54,910 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit_unlock [2021-12-14 17:39:54,910 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_get_interface [2021-12-14 17:39:54,910 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_get_interface [2021-12-14 17:39:54,910 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-14 17:39:54,910 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-14 17:39:54,911 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2021-12-14 17:39:54,911 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2021-12-14 17:39:54,911 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 17:39:54,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 17:39:54,911 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2021-12-14 17:39:54,911 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2021-12-14 17:39:54,911 INFO L130 BoogieDeclarations]: Found specification of procedure usb_store_new_id [2021-12-14 17:39:54,911 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_store_new_id [2021-12-14 17:39:54,912 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2021-12-14 17:39:54,912 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2021-12-14 17:39:54,912 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_int_in [2021-12-14 17:39:54,912 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_int_in [2021-12-14 17:39:54,912 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2021-12-14 17:39:54,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2021-12-14 17:39:54,913 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-12-14 17:39:54,913 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-12-14 17:39:54,913 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_get_by_index [2021-12-14 17:39:54,914 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_get_by_index [2021-12-14 17:39:54,914 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_poison_urbs [2021-12-14 17:39:54,914 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_poison_urbs [2021-12-14 17:39:54,915 INFO L130 BoogieDeclarations]: Found specification of procedure serial_hangup [2021-12-14 17:39:54,915 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_hangup [2021-12-14 17:39:54,915 INFO L130 BoogieDeclarations]: Found specification of procedure serial_ioctl [2021-12-14 17:39:54,915 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_ioctl [2021-12-14 17:39:54,915 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write_room [2021-12-14 17:39:54,915 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write_room [2021-12-14 17:39:54,915 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_disc_mutex_of_usb_serial [2021-12-14 17:39:54,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_disc_mutex_of_usb_serial [2021-12-14 17:39:54,916 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-14 17:39:54,916 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-14 17:39:54,916 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2021-12-14 17:39:54,916 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2021-12-14 17:39:54,916 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-12-14 17:39:54,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-12-14 17:39:54,917 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-14 17:39:54,917 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-14 17:39:54,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:39:54,917 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-14 17:39:54,917 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-14 17:39:54,917 INFO L130 BoogieDeclarations]: Found specification of procedure serial_unthrottle [2021-12-14 17:39:54,917 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_unthrottle [2021-12-14 17:39:54,917 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unpoison_urb [2021-12-14 17:39:54,918 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unpoison_urb [2021-12-14 17:39:54,918 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urbs [2021-12-14 17:39:54,918 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urbs [2021-12-14 17:39:54,918 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_probe [2021-12-14 17:39:54,918 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_probe [2021-12-14 17:39:54,918 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2021-12-14 17:39:54,918 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2021-12-14 17:39:54,918 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value_probe [2021-12-14 17:39:54,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value_probe [2021-12-14 17:39:54,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:39:54,919 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-12-14 17:39:54,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-12-14 17:39:54,919 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-12-14 17:39:54,920 INFO L130 BoogieDeclarations]: Found specification of procedure serial_get_icount [2021-12-14 17:39:54,920 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_get_icount [2021-12-14 17:39:54,920 INFO L130 BoogieDeclarations]: Found specification of procedure serial_throttle [2021-12-14 17:39:54,920 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_throttle [2021-12-14 17:39:54,921 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-14 17:39:54,921 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-14 17:39:54,921 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urb [2021-12-14 17:39:54,921 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urb [2021-12-14 17:39:54,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:39:54,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:39:54,922 INFO L130 BoogieDeclarations]: Found specification of procedure try_module_get [2021-12-14 17:39:54,922 INFO L138 BoogieDeclarations]: Found implementation of procedure try_module_get [2021-12-14 17:39:54,922 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-12-14 17:39:54,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-12-14 17:39:54,922 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-12-14 17:39:54,922 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-12-14 17:39:54,922 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2021-12-14 17:39:54,923 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2021-12-14 17:39:54,923 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2021-12-14 17:39:54,923 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2021-12-14 17:39:54,923 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-14 17:39:54,923 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-14 17:39:54,924 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_resume [2021-12-14 17:39:54,924 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_resume [2021-12-14 17:39:54,926 INFO L130 BoogieDeclarations]: Found specification of procedure serial_cleanup [2021-12-14 17:39:54,926 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_cleanup [2021-12-14 17:39:54,926 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-14 17:39:54,926 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-14 17:39:54,927 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-14 17:39:54,928 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-14 17:39:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_carrier_raised [2021-12-14 17:39:54,928 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_carrier_raised [2021-12-14 17:39:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_uint_must_check_helper [2021-12-14 17:39:54,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_uint_must_check_helper [2021-12-14 17:39:54,933 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-14 17:39:54,933 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-14 17:39:54,933 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmget [2021-12-14 17:39:54,933 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmget [2021-12-14 17:39:54,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-12-14 17:39:54,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-12-14 17:39:54,933 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2021-12-14 17:39:54,933 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2021-12-14 17:39:54,934 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2021-12-14 17:39:54,934 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2021-12-14 17:39:54,934 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-14 17:39:54,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-14 17:39:54,934 INFO L130 BoogieDeclarations]: Found specification of procedure bus_unregister [2021-12-14 17:39:54,934 INFO L138 BoogieDeclarations]: Found implementation of procedure bus_unregister [2021-12-14 17:39:54,934 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_reset_resume [2021-12-14 17:39:54,934 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_reset_resume [2021-12-14 17:39:54,934 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_read_bulk_callback [2021-12-14 17:39:54,935 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_read_bulk_callback [2021-12-14 17:39:54,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2021-12-14 17:39:54,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2021-12-14 17:39:54,935 INFO L130 BoogieDeclarations]: Found specification of procedure usb_poison_urb [2021-12-14 17:39:54,935 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_poison_urb [2021-12-14 17:39:54,935 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface [2021-12-14 17:39:54,935 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface [2021-12-14 17:39:54,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 17:39:54,935 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2021-12-14 17:39:54,936 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2021-12-14 17:39:54,936 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2021-12-14 17:39:54,936 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2021-12-14 17:39:54,936 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-14 17:39:54,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-14 17:39:54,936 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_match [2021-12-14 17:39:54,936 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_match [2021-12-14 17:39:54,936 INFO L130 BoogieDeclarations]: Found specification of procedure serial_open [2021-12-14 17:39:54,936 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_open [2021-12-14 17:39:54,936 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-14 17:39:54,937 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-14 17:39:54,937 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-14 17:39:54,937 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-14 17:39:54,937 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_shutdown [2021-12-14 17:39:54,937 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_shutdown [2021-12-14 17:39:54,937 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2021-12-14 17:39:54,937 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2021-12-14 17:39:54,937 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-14 17:39:54,937 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-14 17:39:54,938 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2021-12-14 17:39:54,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2021-12-14 17:39:54,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 17:39:54,938 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2021-12-14 17:39:54,938 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2021-12-14 17:39:54,938 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2021-12-14 17:39:54,938 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-12-14 17:39:54,938 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-12-14 17:39:54,938 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 17:39:54,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 17:39:54,939 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2021-12-14 17:39:54,939 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2021-12-14 17:39:54,939 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_unthrottle [2021-12-14 17:39:54,939 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_unthrottle [2021-12-14 17:39:54,939 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_disc_mutex_of_usb_serial [2021-12-14 17:39:54,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_disc_mutex_of_usb_serial [2021-12-14 17:39:54,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:39:54,939 INFO L130 BoogieDeclarations]: Found specification of procedure serial_install [2021-12-14 17:39:54,940 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_install [2021-12-14 17:39:54,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:39:54,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:39:54,940 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-14 17:39:54,940 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-14 17:39:54,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-14 17:39:54,940 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-14 17:39:54,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-14 17:39:54,940 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmset [2021-12-14 17:39:54,941 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmset [2021-12-14 17:39:54,941 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_table_lock [2021-12-14 17:39:54,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_table_lock [2021-12-14 17:39:54,941 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-14 17:39:54,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-14 17:39:54,941 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2021-12-14 17:39:54,941 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2021-12-14 17:39:54,941 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_table_lock [2021-12-14 17:39:54,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_table_lock [2021-12-14 17:39:54,942 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-12-14 17:39:54,942 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-12-14 17:39:54,942 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_put [2021-12-14 17:39:54,942 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_put [2021-12-14 17:39:54,942 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_unpoison_port_urbs [2021-12-14 17:39:54,942 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_unpoison_port_urbs [2021-12-14 17:39:54,942 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-14 17:39:54,942 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-14 17:39:54,942 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write [2021-12-14 17:39:54,943 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write [2021-12-14 17:39:54,943 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-14 17:39:54,943 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-14 17:39:54,943 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_serial [2021-12-14 17:39:54,943 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_serial [2021-12-14 17:39:54,943 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-14 17:39:54,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-14 17:39:54,943 INFO L130 BoogieDeclarations]: Found specification of procedure get_iface_id [2021-12-14 17:39:54,943 INFO L138 BoogieDeclarations]: Found implementation of procedure get_iface_id [2021-12-14 17:39:54,944 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-14 17:39:54,944 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-14 17:39:54,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 17:39:54,944 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-12-14 17:39:54,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-12-14 17:39:54,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:39:54,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:39:54,944 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2021-12-14 17:39:54,944 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2021-12-14 17:39:54,945 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_out [2021-12-14 17:39:54,945 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_out [2021-12-14 17:39:55,631 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:39:55,634 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:40:01,963 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:40:01,974 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:40:01,975 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 17:40:01,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:40:01 BoogieIcfgContainer [2021-12-14 17:40:01,978 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:40:01,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:40:01,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:40:01,982 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:40:01,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:39:52" (1/3) ... [2021-12-14 17:40:01,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@156ec775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:40:01, skipping insertion in model container [2021-12-14 17:40:01,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:39:54" (2/3) ... [2021-12-14 17:40:01,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@156ec775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:40:01, skipping insertion in model container [2021-12-14 17:40:01,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:40:01" (3/3) ... [2021-12-14 17:40:01,984 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i [2021-12-14 17:40:01,987 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:40:01,988 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:40:02,023 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:40:02,029 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 17:40:02,029 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:40:02,070 INFO L276 IsEmpty]: Start isEmpty. Operand has 1845 states, 1279 states have (on average 1.3096168881939014) internal successors, (1675), 1313 states have internal predecessors, (1675), 452 states have call successors, (452), 112 states have call predecessors, (452), 112 states have return successors, (452), 438 states have call predecessors, (452), 452 states have call successors, (452) [2021-12-14 17:40:02,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-14 17:40:02,074 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:40:02,075 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:40:02,075 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:40:02,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:40:02,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1524047706, now seen corresponding path program 1 times [2021-12-14 17:40:02,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:40:02,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358484848] [2021-12-14 17:40:02,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:40:02,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:40:02,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:02,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:40:02,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:02,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:40:02,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:02,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 17:40:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:02,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 17:40:02,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:02,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:40:02,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:40:02,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358484848] [2021-12-14 17:40:02,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358484848] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:40:02,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:40:02,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:40:02,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921351827] [2021-12-14 17:40:02,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:40:02,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:40:02,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:40:02,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:40:02,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:40:02,535 INFO L87 Difference]: Start difference. First operand has 1845 states, 1279 states have (on average 1.3096168881939014) internal successors, (1675), 1313 states have internal predecessors, (1675), 452 states have call successors, (452), 112 states have call predecessors, (452), 112 states have return successors, (452), 438 states have call predecessors, (452), 452 states have call successors, (452) Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-14 17:40:12,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:40:12,959 INFO L93 Difference]: Finished difference Result 5926 states and 8748 transitions. [2021-12-14 17:40:12,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 17:40:12,962 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2021-12-14 17:40:12,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:40:13,011 INFO L225 Difference]: With dead ends: 5926 [2021-12-14 17:40:13,011 INFO L226 Difference]: Without dead ends: 4084 [2021-12-14 17:40:13,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-14 17:40:13,070 INFO L933 BasicCegarLoop]: 2512 mSDtfsCounter, 5455 mSDsluCounter, 1751 mSDsCounter, 0 mSdLazyCounter, 4992 mSolverCounterSat, 3209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5776 SdHoareTripleChecker+Valid, 4263 SdHoareTripleChecker+Invalid, 8201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3209 IncrementalHoareTripleChecker+Valid, 4992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2021-12-14 17:40:13,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5776 Valid, 4263 Invalid, 8201 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3209 Valid, 4992 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2021-12-14 17:40:13,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4084 states. [2021-12-14 17:40:13,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4084 to 3549. [2021-12-14 17:40:13,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3549 states, 2469 states have (on average 1.296881328473066) internal successors, (3202), 2526 states have internal predecessors, (3202), 839 states have call successors, (839), 220 states have call predecessors, (839), 240 states have return successors, (942), 821 states have call predecessors, (942), 823 states have call successors, (942) [2021-12-14 17:40:13,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3549 states to 3549 states and 4983 transitions. [2021-12-14 17:40:13,315 INFO L78 Accepts]: Start accepts. Automaton has 3549 states and 4983 transitions. Word has length 32 [2021-12-14 17:40:13,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:40:13,317 INFO L470 AbstractCegarLoop]: Abstraction has 3549 states and 4983 transitions. [2021-12-14 17:40:13,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-14 17:40:13,318 INFO L276 IsEmpty]: Start isEmpty. Operand 3549 states and 4983 transitions. [2021-12-14 17:40:13,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-14 17:40:13,323 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:40:13,323 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:40:13,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 17:40:13,324 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:40:13,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:40:13,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1075164, now seen corresponding path program 1 times [2021-12-14 17:40:13,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:40:13,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961322301] [2021-12-14 17:40:13,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:40:13,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:40:13,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:13,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:40:13,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:13,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:40:13,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:13,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 17:40:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:13,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 17:40:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:13,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:40:13,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:40:13,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961322301] [2021-12-14 17:40:13,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961322301] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:40:13,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:40:13,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:40:13,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141977555] [2021-12-14 17:40:13,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:40:13,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:40:13,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:40:13,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:40:13,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:40:13,526 INFO L87 Difference]: Start difference. First operand 3549 states and 4983 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-14 17:40:18,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:40:18,789 INFO L93 Difference]: Finished difference Result 4152 states and 5960 transitions. [2021-12-14 17:40:18,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:40:18,790 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2021-12-14 17:40:18,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:40:18,812 INFO L225 Difference]: With dead ends: 4152 [2021-12-14 17:40:18,812 INFO L226 Difference]: Without dead ends: 4149 [2021-12-14 17:40:18,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-14 17:40:18,818 INFO L933 BasicCegarLoop]: 2112 mSDtfsCounter, 3969 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 2474 mSolverCounterSat, 2111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4192 SdHoareTripleChecker+Valid, 3024 SdHoareTripleChecker+Invalid, 4585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2111 IncrementalHoareTripleChecker+Valid, 2474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:40:18,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4192 Valid, 3024 Invalid, 4585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2111 Valid, 2474 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-12-14 17:40:18,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4149 states. [2021-12-14 17:40:18,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4149 to 3548. [2021-12-14 17:40:18,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3548 states, 2469 states have (on average 1.2964763061968407) internal successors, (3201), 2525 states have internal predecessors, (3201), 838 states have call successors, (838), 220 states have call predecessors, (838), 240 states have return successors, (942), 821 states have call predecessors, (942), 823 states have call successors, (942) [2021-12-14 17:40:18,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3548 states to 3548 states and 4981 transitions. [2021-12-14 17:40:18,961 INFO L78 Accepts]: Start accepts. Automaton has 3548 states and 4981 transitions. Word has length 33 [2021-12-14 17:40:18,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:40:18,962 INFO L470 AbstractCegarLoop]: Abstraction has 3548 states and 4981 transitions. [2021-12-14 17:40:18,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-14 17:40:18,962 INFO L276 IsEmpty]: Start isEmpty. Operand 3548 states and 4981 transitions. [2021-12-14 17:40:18,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-14 17:40:18,963 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:40:18,963 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:40:18,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 17:40:18,964 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:40:18,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:40:18,964 INFO L85 PathProgramCache]: Analyzing trace with hash -35239011, now seen corresponding path program 1 times [2021-12-14 17:40:18,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:40:18,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822952118] [2021-12-14 17:40:18,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:40:18,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:40:19,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:19,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:40:19,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:19,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:40:19,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:19,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 17:40:19,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:19,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 17:40:19,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:19,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:40:19,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:40:19,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822952118] [2021-12-14 17:40:19,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822952118] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:40:19,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:40:19,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:40:19,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948789626] [2021-12-14 17:40:19,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:40:19,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:40:19,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:40:19,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:40:19,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:40:19,163 INFO L87 Difference]: Start difference. First operand 3548 states and 4981 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-14 17:40:24,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:40:24,774 INFO L93 Difference]: Finished difference Result 4151 states and 5958 transitions. [2021-12-14 17:40:24,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:40:24,775 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2021-12-14 17:40:24,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:40:24,797 INFO L225 Difference]: With dead ends: 4151 [2021-12-14 17:40:24,797 INFO L226 Difference]: Without dead ends: 4148 [2021-12-14 17:40:24,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-14 17:40:24,803 INFO L933 BasicCegarLoop]: 2109 mSDtfsCounter, 3971 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 2450 mSolverCounterSat, 2117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4203 SdHoareTripleChecker+Valid, 3021 SdHoareTripleChecker+Invalid, 4567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2117 IncrementalHoareTripleChecker+Valid, 2450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-12-14 17:40:24,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4203 Valid, 3021 Invalid, 4567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2117 Valid, 2450 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-12-14 17:40:24,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2021-12-14 17:40:24,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 3547. [2021-12-14 17:40:24,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3547 states, 2469 states have (on average 1.2960712839206157) internal successors, (3200), 2524 states have internal predecessors, (3200), 837 states have call successors, (837), 220 states have call predecessors, (837), 240 states have return successors, (942), 821 states have call predecessors, (942), 823 states have call successors, (942) [2021-12-14 17:40:24,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3547 states to 3547 states and 4979 transitions. [2021-12-14 17:40:24,973 INFO L78 Accepts]: Start accepts. Automaton has 3547 states and 4979 transitions. Word has length 34 [2021-12-14 17:40:24,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:40:24,974 INFO L470 AbstractCegarLoop]: Abstraction has 3547 states and 4979 transitions. [2021-12-14 17:40:24,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-14 17:40:24,974 INFO L276 IsEmpty]: Start isEmpty. Operand 3547 states and 4979 transitions. [2021-12-14 17:40:24,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-14 17:40:24,977 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:40:24,977 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:40:24,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 17:40:24,978 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:40:24,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:40:24,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1094313401, now seen corresponding path program 1 times [2021-12-14 17:40:24,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:40:24,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237278719] [2021-12-14 17:40:24,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:40:24,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:40:25,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:25,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:40:25,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:25,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:40:25,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:25,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 17:40:25,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:25,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 17:40:25,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:25,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:40:25,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:40:25,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237278719] [2021-12-14 17:40:25,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237278719] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:40:25,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:40:25,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:40:25,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797898544] [2021-12-14 17:40:25,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:40:25,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:40:25,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:40:25,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:40:25,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:40:25,164 INFO L87 Difference]: Start difference. First operand 3547 states and 4979 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-14 17:40:30,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:40:30,253 INFO L93 Difference]: Finished difference Result 4288 states and 6099 transitions. [2021-12-14 17:40:30,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 17:40:30,256 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2021-12-14 17:40:30,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:40:30,277 INFO L225 Difference]: With dead ends: 4288 [2021-12-14 17:40:30,277 INFO L226 Difference]: Without dead ends: 4269 [2021-12-14 17:40:30,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-14 17:40:30,282 INFO L933 BasicCegarLoop]: 2171 mSDtfsCounter, 3870 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 2629 mSolverCounterSat, 2083 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4079 SdHoareTripleChecker+Valid, 3183 SdHoareTripleChecker+Invalid, 4712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2083 IncrementalHoareTripleChecker+Valid, 2629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-12-14 17:40:30,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4079 Valid, 3183 Invalid, 4712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2083 Valid, 2629 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-12-14 17:40:30,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4269 states. [2021-12-14 17:40:30,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4269 to 3660. [2021-12-14 17:40:30,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3660 states, 2557 states have (on average 1.2901838091513493) internal successors, (3299), 2609 states have internal predecessors, (3299), 840 states have call successors, (840), 242 states have call predecessors, (840), 262 states have return successors, (948), 827 states have call predecessors, (948), 829 states have call successors, (948) [2021-12-14 17:40:30,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3660 states to 3660 states and 5087 transitions. [2021-12-14 17:40:30,438 INFO L78 Accepts]: Start accepts. Automaton has 3660 states and 5087 transitions. Word has length 35 [2021-12-14 17:40:30,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:40:30,440 INFO L470 AbstractCegarLoop]: Abstraction has 3660 states and 5087 transitions. [2021-12-14 17:40:30,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-14 17:40:30,441 INFO L276 IsEmpty]: Start isEmpty. Operand 3660 states and 5087 transitions. [2021-12-14 17:40:30,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-14 17:40:30,447 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:40:30,447 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:40:30,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 17:40:30,447 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:40:30,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:40:30,448 INFO L85 PathProgramCache]: Analyzing trace with hash 515000665, now seen corresponding path program 1 times [2021-12-14 17:40:30,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:40:30,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380635674] [2021-12-14 17:40:30,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:40:30,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:40:30,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:30,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:40:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:30,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:40:30,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:30,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 17:40:30,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:30,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 17:40:30,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:30,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-14 17:40:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:30,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 17:40:30,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:30,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-14 17:40:30,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:30,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 17:40:30,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:40:30,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380635674] [2021-12-14 17:40:30,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380635674] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:40:30,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:40:30,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 17:40:30,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521862521] [2021-12-14 17:40:30,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:40:30,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 17:40:30,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:40:30,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 17:40:30,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:40:30,630 INFO L87 Difference]: Start difference. First operand 3660 states and 5087 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-14 17:40:38,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:40:38,061 INFO L93 Difference]: Finished difference Result 8494 states and 12125 transitions. [2021-12-14 17:40:38,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 17:40:38,063 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2021-12-14 17:40:38,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:40:38,090 INFO L225 Difference]: With dead ends: 8494 [2021-12-14 17:40:38,090 INFO L226 Difference]: Without dead ends: 4992 [2021-12-14 17:40:38,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-12-14 17:40:38,177 INFO L933 BasicCegarLoop]: 2302 mSDtfsCounter, 3254 mSDsluCounter, 4219 mSDsCounter, 0 mSdLazyCounter, 5134 mSolverCounterSat, 2425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3480 SdHoareTripleChecker+Valid, 6521 SdHoareTripleChecker+Invalid, 7559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2425 IncrementalHoareTripleChecker+Valid, 5134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:40:38,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3480 Valid, 6521 Invalid, 7559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2425 Valid, 5134 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2021-12-14 17:40:38,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4992 states. [2021-12-14 17:40:38,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4992 to 4284. [2021-12-14 17:40:38,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4284 states, 3032 states have (on average 1.3007915567282322) internal successors, (3944), 3075 states have internal predecessors, (3944), 975 states have call successors, (975), 242 states have call predecessors, (975), 276 states have return successors, (1133), 985 states have call predecessors, (1133), 964 states have call successors, (1133) [2021-12-14 17:40:38,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4284 states to 4284 states and 6052 transitions. [2021-12-14 17:40:38,331 INFO L78 Accepts]: Start accepts. Automaton has 4284 states and 6052 transitions. Word has length 58 [2021-12-14 17:40:38,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:40:38,331 INFO L470 AbstractCegarLoop]: Abstraction has 4284 states and 6052 transitions. [2021-12-14 17:40:38,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-14 17:40:38,332 INFO L276 IsEmpty]: Start isEmpty. Operand 4284 states and 6052 transitions. [2021-12-14 17:40:38,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-14 17:40:38,333 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:40:38,333 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:40:38,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 17:40:38,334 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:40:38,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:40:38,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1001937349, now seen corresponding path program 1 times [2021-12-14 17:40:38,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:40:38,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278025321] [2021-12-14 17:40:38,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:40:38,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:40:38,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:38,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:40:38,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:38,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:40:38,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:38,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 17:40:38,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:38,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 17:40:38,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:38,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 17:40:38,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:38,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-14 17:40:38,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:38,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-14 17:40:38,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:38,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-14 17:40:38,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:38,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 17:40:38,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:40:38,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278025321] [2021-12-14 17:40:38,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278025321] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:40:38,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:40:38,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 17:40:38,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600605102] [2021-12-14 17:40:38,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:40:38,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:40:38,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:40:38,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:40:38,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:40:38,535 INFO L87 Difference]: Start difference. First operand 4284 states and 6052 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-14 17:40:44,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:40:44,972 INFO L93 Difference]: Finished difference Result 9259 states and 13286 transitions. [2021-12-14 17:40:44,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 17:40:44,973 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 67 [2021-12-14 17:40:44,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:40:45,005 INFO L225 Difference]: With dead ends: 9259 [2021-12-14 17:40:45,006 INFO L226 Difference]: Without dead ends: 4994 [2021-12-14 17:40:45,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:40:45,027 INFO L933 BasicCegarLoop]: 2298 mSDtfsCounter, 2234 mSDsluCounter, 3103 mSDsCounter, 0 mSdLazyCounter, 4212 mSolverCounterSat, 1560 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2463 SdHoareTripleChecker+Valid, 5401 SdHoareTripleChecker+Invalid, 5772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1560 IncrementalHoareTripleChecker+Valid, 4212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:40:45,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2463 Valid, 5401 Invalid, 5772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1560 Valid, 4212 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2021-12-14 17:40:45,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4994 states. [2021-12-14 17:40:45,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4994 to 4285. [2021-12-14 17:40:45,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4285 states, 3033 states have (on average 1.3006923837784372) internal successors, (3945), 3076 states have internal predecessors, (3945), 975 states have call successors, (975), 242 states have call predecessors, (975), 276 states have return successors, (1133), 985 states have call predecessors, (1133), 964 states have call successors, (1133) [2021-12-14 17:40:45,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4285 states to 4285 states and 6053 transitions. [2021-12-14 17:40:45,191 INFO L78 Accepts]: Start accepts. Automaton has 4285 states and 6053 transitions. Word has length 67 [2021-12-14 17:40:45,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:40:45,191 INFO L470 AbstractCegarLoop]: Abstraction has 4285 states and 6053 transitions. [2021-12-14 17:40:45,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-14 17:40:45,192 INFO L276 IsEmpty]: Start isEmpty. Operand 4285 states and 6053 transitions. [2021-12-14 17:40:45,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-14 17:40:45,194 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:40:45,194 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:40:45,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 17:40:45,195 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:40:45,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:40:45,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1602163945, now seen corresponding path program 1 times [2021-12-14 17:40:45,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:40:45,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556343064] [2021-12-14 17:40:45,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:40:45,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:40:45,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:45,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:40:45,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:45,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:40:45,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:45,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 17:40:45,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:45,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 17:40:45,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:45,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:40:45,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:45,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-14 17:40:45,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:45,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:40:45,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:45,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-14 17:40:45,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:45,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 17:40:45,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:40:45,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556343064] [2021-12-14 17:40:45,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556343064] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:40:45,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876063285] [2021-12-14 17:40:45,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:40:45,397 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:40:45,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:40:45,398 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:40:45,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 17:40:46,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:46,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 3049 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-14 17:40:46,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:40:46,162 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:40:46,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 17:40:46,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 17:40:46,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876063285] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 17:40:46,292 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 17:40:46,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2021-12-14 17:40:46,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988448140] [2021-12-14 17:40:46,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 17:40:46,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-14 17:40:46,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:40:46,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-14 17:40:46,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-12-14 17:40:46,294 INFO L87 Difference]: Start difference. First operand 4285 states and 6053 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12)