./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.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 ec1c916a4e8241683d3d78dd3b5f266227914917d53067d3c7741f08a3fdd65b --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 05:28:29,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 05:28:29,188 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 05:28:29,220 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 05:28:29,221 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 05:28:29,223 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 05:28:29,224 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 05:28:29,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 05:28:29,227 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 05:28:29,231 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 05:28:29,232 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 05:28:29,233 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 05:28:29,233 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 05:28:29,235 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 05:28:29,236 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 05:28:29,238 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 05:28:29,239 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 05:28:29,240 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 05:28:29,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 05:28:29,246 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 05:28:29,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 05:28:29,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 05:28:29,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 05:28:29,249 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 05:28:29,254 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 05:28:29,254 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 05:28:29,254 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 05:28:29,255 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 05:28:29,256 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 05:28:29,256 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 05:28:29,257 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 05:28:29,257 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 05:28:29,258 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 05:28:29,259 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 05:28:29,260 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 05:28:29,260 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 05:28:29,261 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 05:28:29,261 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 05:28:29,262 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 05:28:29,262 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 05:28:29,263 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 05:28:29,264 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-18 05:28:29,289 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 05:28:29,289 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 05:28:29,290 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 05:28:29,290 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 05:28:29,291 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 05:28:29,291 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 05:28:29,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 05:28:29,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 05:28:29,291 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 05:28:29,292 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 05:28:29,292 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 05:28:29,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 05:28:29,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 05:28:29,293 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 05:28:29,293 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 05:28:29,293 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 05:28:29,293 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 05:28:29,293 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 05:28:29,293 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 05:28:29,294 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 05:28:29,294 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 05:28:29,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 05:28:29,294 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 05:28:29,294 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 05:28:29,294 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 05:28:29,295 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 05:28:29,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 05:28:29,295 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 05:28:29,295 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 05:28:29,295 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 05:28:29,295 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 05:28:29,296 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec1c916a4e8241683d3d78dd3b5f266227914917d53067d3c7741f08a3fdd65b [2021-12-18 05:28:29,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 05:28:29,499 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 05:28:29,501 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 05:28:29,502 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 05:28:29,503 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 05:28:29,504 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-12-18 05:28:29,587 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03eab1269/9ba4d62d65aa4bd6acd0638914bd6237/FLAG200f679fd [2021-12-18 05:28:30,154 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 05:28:30,154 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-12-18 05:28:30,187 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03eab1269/9ba4d62d65aa4bd6acd0638914bd6237/FLAG200f679fd [2021-12-18 05:28:30,601 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03eab1269/9ba4d62d65aa4bd6acd0638914bd6237 [2021-12-18 05:28:30,603 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 05:28:30,604 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 05:28:30,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 05:28:30,606 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 05:28:30,608 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 05:28:30,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 05:28:30" (1/1) ... [2021-12-18 05:28:30,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59693354 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:28:30, skipping insertion in model container [2021-12-18 05:28:30,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 05:28:30" (1/1) ... [2021-12-18 05:28:30,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 05:28:30,713 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 05:28:31,546 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-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i[218543,218556] [2021-12-18 05:28:31,575 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 05:28:31,621 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 05:28:31,943 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-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i[218543,218556] [2021-12-18 05:28:31,955 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 05:28:32,006 INFO L208 MainTranslator]: Completed translation [2021-12-18 05:28:32,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:28:32 WrapperNode [2021-12-18 05:28:32,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 05:28:32,010 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 05:28:32,010 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 05:28:32,010 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 05:28:32,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:28:32" (1/1) ... [2021-12-18 05:28:32,080 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:28:32" (1/1) ... [2021-12-18 05:28:32,230 INFO L137 Inliner]: procedures = 187, calls = 2219, calls flagged for inlining = 71, calls inlined = 71, statements flattened = 4636 [2021-12-18 05:28:32,231 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 05:28:32,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 05:28:32,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 05:28:32,232 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 05:28:32,238 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:28:32" (1/1) ... [2021-12-18 05:28:32,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:28:32" (1/1) ... [2021-12-18 05:28:32,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:28:32" (1/1) ... [2021-12-18 05:28:32,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:28:32" (1/1) ... [2021-12-18 05:28:32,367 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:28:32" (1/1) ... [2021-12-18 05:28:32,387 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:28:32" (1/1) ... [2021-12-18 05:28:32,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:28:32" (1/1) ... [2021-12-18 05:28:32,429 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 05:28:32,431 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 05:28:32,431 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 05:28:32,431 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 05:28:32,432 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:28:32" (1/1) ... [2021-12-18 05:28:32,437 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 05:28:32,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 05:28:32,456 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) [2021-12-18 05:28:32,488 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 [2021-12-18 05:28:32,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-12-18 05:28:32,510 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-12-18 05:28:32,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-18 05:28:32,510 INFO L130 BoogieDeclarations]: Found specification of procedure ti_bulk_in_callback [2021-12-18 05:28:32,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_bulk_in_callback [2021-12-18 05:28:32,511 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-12-18 05:28:32,511 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-12-18 05:28:32,511 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-12-18 05:28:32,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-18 05:28:32,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-18 05:28:32,511 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-18 05:28:32,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-18 05:28:32,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 05:28:32,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-18 05:28:32,512 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-18 05:28:32,512 INFO L130 BoogieDeclarations]: Found specification of procedure tty_kref_put [2021-12-18 05:28:32,512 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_kref_put [2021-12-18 05:28:32,512 INFO L130 BoogieDeclarations]: Found specification of procedure ti_throttle [2021-12-18 05:28:32,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_throttle [2021-12-18 05:28:32,512 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_serial_deregister [2021-12-18 05:28:32,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_serial_deregister [2021-12-18 05:28:32,512 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_port_data [2021-12-18 05:28:32,513 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_port_data [2021-12-18 05:28:32,513 INFO L130 BoogieDeclarations]: Found specification of procedure ti_command_out_sync [2021-12-18 05:28:32,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_command_out_sync [2021-12-18 05:28:32,513 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-18 05:28:32,513 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-18 05:28:32,513 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-18 05:28:32,513 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-18 05:28:32,513 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-18 05:28:32,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-18 05:28:32,514 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-18 05:28:32,514 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-18 05:28:32,514 INFO L130 BoogieDeclarations]: Found specification of procedure ti_open [2021-12-18 05:28:32,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_open [2021-12-18 05:28:32,514 INFO L130 BoogieDeclarations]: Found specification of procedure ti_bulk_out_callback [2021-12-18 05:28:32,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_bulk_out_callback [2021-12-18 05:28:32,515 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2021-12-18 05:28:32,515 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2021-12-18 05:28:32,515 INFO L130 BoogieDeclarations]: Found specification of procedure ti_tiocmset [2021-12-18 05:28:32,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_tiocmset [2021-12-18 05:28:32,515 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-18 05:28:32,515 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-18 05:28:32,515 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2021-12-18 05:28:32,515 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2021-12-18 05:28:32,516 INFO L130 BoogieDeclarations]: Found specification of procedure ti_set_mcr [2021-12-18 05:28:32,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_set_mcr [2021-12-18 05:28:32,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 05:28:32,516 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-18 05:28:32,516 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-18 05:28:32,516 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-18 05:28:32,516 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-18 05:28:32,517 INFO L130 BoogieDeclarations]: Found specification of procedure ti_write_byte [2021-12-18 05:28:32,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_write_byte [2021-12-18 05:28:32,517 INFO L130 BoogieDeclarations]: Found specification of procedure ti_chars_in_buffer [2021-12-18 05:28:32,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_chars_in_buffer [2021-12-18 05:28:32,518 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-18 05:28:32,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-18 05:28:32,518 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-12-18 05:28:32,519 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-12-18 05:28:32,519 INFO L130 BoogieDeclarations]: Found specification of procedure ti_startup [2021-12-18 05:28:32,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_startup [2021-12-18 05:28:32,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-18 05:28:32,519 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-18 05:28:32,519 INFO L130 BoogieDeclarations]: Found specification of procedure ti_ioctl [2021-12-18 05:28:32,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_ioctl [2021-12-18 05:28:32,519 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_register [2021-12-18 05:28:32,520 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_register [2021-12-18 05:28:32,520 INFO L130 BoogieDeclarations]: Found specification of procedure ti_write_room [2021-12-18 05:28:32,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_write_room [2021-12-18 05:28:32,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-18 05:28:32,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-18 05:28:32,520 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-18 05:28:32,520 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-18 05:28:32,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_detach_2 [2021-12-18 05:28:32,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_detach_2 [2021-12-18 05:28:32,521 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_detach_1 [2021-12-18 05:28:32,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_detach_1 [2021-12-18 05:28:32,521 INFO L130 BoogieDeclarations]: Found specification of procedure ti_tiocmget [2021-12-18 05:28:32,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_tiocmget [2021-12-18 05:28:32,521 INFO L130 BoogieDeclarations]: Found specification of procedure msleep_interruptible [2021-12-18 05:28:32,522 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep_interruptible [2021-12-18 05:28:32,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 05:28:32,522 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_free [2021-12-18 05:28:32,522 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_free [2021-12-18 05:28:32,522 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2021-12-18 05:28:32,522 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2021-12-18 05:28:32,522 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-18 05:28:32,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-18 05:28:32,523 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-18 05:28:32,523 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-18 05:28:32,523 INFO L130 BoogieDeclarations]: Found specification of procedure ti_interrupt_callback [2021-12-18 05:28:32,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_interrupt_callback [2021-12-18 05:28:32,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 05:28:32,523 INFO L130 BoogieDeclarations]: Found specification of procedure tty_wakeup [2021-12-18 05:28:32,524 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_wakeup [2021-12-18 05:28:32,524 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-18 05:28:32,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-18 05:28:32,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 05:28:32,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 05:28:32,525 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-18 05:28:32,525 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_data [2021-12-18 05:28:32,525 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_data [2021-12-18 05:28:32,525 INFO L130 BoogieDeclarations]: Found specification of procedure ti_close [2021-12-18 05:28:32,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_close [2021-12-18 05:28:32,525 INFO L130 BoogieDeclarations]: Found specification of procedure ti_break [2021-12-18 05:28:32,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_break [2021-12-18 05:28:32,526 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-12-18 05:28:32,526 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-12-18 05:28:32,526 INFO L130 BoogieDeclarations]: Found specification of procedure __swab16s [2021-12-18 05:28:32,526 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab16s [2021-12-18 05:28:32,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 05:28:32,526 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-12-18 05:28:32,526 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-12-18 05:28:32,527 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-18 05:28:32,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-18 05:28:32,527 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2021-12-18 05:28:32,527 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2021-12-18 05:28:32,528 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-18 05:28:32,530 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-18 05:28:32,530 INFO L130 BoogieDeclarations]: Found specification of procedure ti_unthrottle [2021-12-18 05:28:32,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_unthrottle [2021-12-18 05:28:32,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 05:28:32,531 INFO L130 BoogieDeclarations]: Found specification of procedure ti_write [2021-12-18 05:28:32,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_write [2021-12-18 05:28:32,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 05:28:32,532 INFO L130 BoogieDeclarations]: Found specification of procedure ti_restart_read [2021-12-18 05:28:32,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_restart_read [2021-12-18 05:28:32,536 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-18 05:28:32,537 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-18 05:28:32,537 INFO L130 BoogieDeclarations]: Found specification of procedure ti_release [2021-12-18 05:28:32,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_release [2021-12-18 05:28:32,537 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-18 05:28:32,537 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-18 05:28:32,537 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-18 05:28:32,537 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-18 05:28:32,537 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-18 05:28:32,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-18 05:28:32,538 INFO L130 BoogieDeclarations]: Found specification of procedure request_firmware [2021-12-18 05:28:32,538 INFO L138 BoogieDeclarations]: Found implementation of procedure request_firmware [2021-12-18 05:28:32,538 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-18 05:28:32,538 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-18 05:28:32,538 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-18 05:28:32,538 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-18 05:28:32,538 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-18 05:28:32,538 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-18 05:28:32,538 INFO L130 BoogieDeclarations]: Found specification of procedure ti_send [2021-12-18 05:28:32,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_send [2021-12-18 05:28:32,539 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_get [2021-12-18 05:28:32,539 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_get [2021-12-18 05:28:32,539 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-12-18 05:28:32,539 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-12-18 05:28:32,539 INFO L130 BoogieDeclarations]: Found specification of procedure ti_drain [2021-12-18 05:28:32,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_drain [2021-12-18 05:28:32,539 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-18 05:28:32,539 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-18 05:28:32,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 05:28:32,539 INFO L130 BoogieDeclarations]: Found specification of procedure usb_clear_halt [2021-12-18 05:28:32,540 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_clear_halt [2021-12-18 05:28:32,540 INFO L130 BoogieDeclarations]: Found specification of procedure ti_set_termios [2021-12-18 05:28:32,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_set_termios [2021-12-18 05:28:32,540 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_data [2021-12-18 05:28:32,540 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_data [2021-12-18 05:28:32,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-18 05:28:32,540 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-18 05:28:32,540 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-18 05:28:32,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 05:28:32,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 05:28:33,046 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 05:28:33,050 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 05:28:33,330 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-18 05:29:01,084 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 05:29:01,104 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 05:29:01,104 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-18 05:29:01,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 05:29:01 BoogieIcfgContainer [2021-12-18 05:29:01,108 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 05:29:01,109 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 05:29:01,109 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 05:29:01,112 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 05:29:01,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 05:28:30" (1/3) ... [2021-12-18 05:29:01,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bb163b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 05:29:01, skipping insertion in model container [2021-12-18 05:29:01,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:28:32" (2/3) ... [2021-12-18 05:29:01,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bb163b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 05:29:01, skipping insertion in model container [2021-12-18 05:29:01,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 05:29:01" (3/3) ... [2021-12-18 05:29:01,114 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-12-18 05:29:01,118 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 05:29:01,118 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 05:29:01,165 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 05:29:01,175 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 [2021-12-18 05:29:01,175 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 05:29:01,218 INFO L276 IsEmpty]: Start isEmpty. Operand has 1529 states, 1104 states have (on average 1.4230072463768115) internal successors, (1571), 1128 states have internal predecessors, (1571), 349 states have call successors, (349), 75 states have call predecessors, (349), 74 states have return successors, (343), 341 states have call predecessors, (343), 343 states have call successors, (343) [2021-12-18 05:29:01,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-12-18 05:29:01,235 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:29:01,236 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 05:29:01,237 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:29:01,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:29:01,240 INFO L85 PathProgramCache]: Analyzing trace with hash -44726715, now seen corresponding path program 1 times [2021-12-18 05:29:01,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:29:01,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223472020] [2021-12-18 05:29:01,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:29:01,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:29:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:01,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:29:01,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:01,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:01,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:01,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:29:01,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:01,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 05:29:01,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:01,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:01,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:01,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:29:01,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:01,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 05:29:01,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:01,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:01,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:01,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:29:01,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:01,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 05:29:01,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:01,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:01,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:01,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:29:01,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:01,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 05:29:01,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:02,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:02,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:02,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:29:02,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:02,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-18 05:29:02,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:02,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:02,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:02,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-18 05:29:02,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:02,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:02,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:02,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-18 05:29:02,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:02,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:02,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:02,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-18 05:29:02,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:02,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:02,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:02,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-18 05:29:02,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:02,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:02,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:02,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-18 05:29:02,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:02,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:02,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:02,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-18 05:29:02,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:02,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:02,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:02,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-18 05:29:02,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:02,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:02,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:02,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-18 05:29:02,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:02,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:02,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:02,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-18 05:29:02,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:02,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:02,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:02,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-12-18 05:29:02,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:02,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:02,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:02,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-18 05:29:02,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:02,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:02,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:02,273 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 734 trivial. 0 not checked. [2021-12-18 05:29:02,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:29:02,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223472020] [2021-12-18 05:29:02,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223472020] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 05:29:02,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 05:29:02,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 05:29:02,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862484814] [2021-12-18 05:29:02,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 05:29:02,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 05:29:02,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:29:02,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 05:29:02,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 05:29:02,306 INFO L87 Difference]: Start difference. First operand has 1529 states, 1104 states have (on average 1.4230072463768115) internal successors, (1571), 1128 states have internal predecessors, (1571), 349 states have call successors, (349), 75 states have call predecessors, (349), 74 states have return successors, (343), 341 states have call predecessors, (343), 343 states have call successors, (343) Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-18 05:29:04,375 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:29:08,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:29:08,765 INFO L93 Difference]: Finished difference Result 3395 states and 5387 transitions. [2021-12-18 05:29:08,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 05:29:08,767 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 224 [2021-12-18 05:29:08,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:29:08,792 INFO L225 Difference]: With dead ends: 3395 [2021-12-18 05:29:08,792 INFO L226 Difference]: Without dead ends: 1853 [2021-12-18 05:29:08,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-18 05:29:08,813 INFO L933 BasicCegarLoop]: 2415 mSDtfsCounter, 1611 mSDsluCounter, 1179 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 1399 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1666 SdHoareTripleChecker+Valid, 3594 SdHoareTripleChecker+Invalid, 2369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1399 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-12-18 05:29:08,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1666 Valid, 3594 Invalid, 2369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1399 Valid, 969 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2021-12-18 05:29:08,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1853 states. [2021-12-18 05:29:08,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1853 to 1512. [2021-12-18 05:29:08,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 1094 states have (on average 1.4177330895795246) internal successors, (1551), 1112 states have internal predecessors, (1551), 343 states have call successors, (343), 74 states have call predecessors, (343), 74 states have return successors, (342), 340 states have call predecessors, (342), 342 states have call successors, (342) [2021-12-18 05:29:08,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 2236 transitions. [2021-12-18 05:29:08,950 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 2236 transitions. Word has length 224 [2021-12-18 05:29:08,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:29:08,951 INFO L470 AbstractCegarLoop]: Abstraction has 1512 states and 2236 transitions. [2021-12-18 05:29:08,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-18 05:29:08,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 2236 transitions. [2021-12-18 05:29:08,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-12-18 05:29:08,962 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:29:08,963 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 05:29:08,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 05:29:08,963 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:29:08,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:29:08,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1303521969, now seen corresponding path program 1 times [2021-12-18 05:29:08,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:29:08,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849508778] [2021-12-18 05:29:08,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:29:08,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:29:09,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:09,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:29:09,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:09,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:09,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:09,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:29:09,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:09,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 05:29:09,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:09,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:09,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:09,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:29:09,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:09,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 05:29:09,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:09,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:09,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:09,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:29:09,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:09,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 05:29:09,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:09,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:09,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:09,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:29:09,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:09,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 05:29:09,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:09,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:09,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:09,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:29:09,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:09,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-18 05:29:09,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:09,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:09,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:09,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-18 05:29:09,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:09,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:09,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-18 05:29:09,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:09,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:09,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-18 05:29:09,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:09,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:09,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:09,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-18 05:29:09,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:09,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:09,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:09,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-18 05:29:09,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:09,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:09,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:09,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-18 05:29:09,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:09,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:09,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:09,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-18 05:29:09,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:09,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:09,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:09,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-18 05:29:09,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:09,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:09,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:09,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-18 05:29:09,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:09,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:09,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:09,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-12-18 05:29:09,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:09,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:09,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:09,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-18 05:29:09,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:09,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:09,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:09,547 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 734 trivial. 0 not checked. [2021-12-18 05:29:09,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:29:09,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849508778] [2021-12-18 05:29:09,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849508778] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 05:29:09,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 05:29:09,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 05:29:09,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711144681] [2021-12-18 05:29:09,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 05:29:09,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 05:29:09,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:29:09,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 05:29:09,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 05:29:09,549 INFO L87 Difference]: Start difference. First operand 1512 states and 2236 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (21), 5 states have call predecessors, (21), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2021-12-18 05:29:11,618 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:29:13,637 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:29:15,643 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:29:26,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:29:26,311 INFO L93 Difference]: Finished difference Result 5054 states and 7854 transitions. [2021-12-18 05:29:26,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 05:29:26,312 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (21), 5 states have call predecessors, (21), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 224 [2021-12-18 05:29:26,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:29:26,338 INFO L225 Difference]: With dead ends: 5054 [2021-12-18 05:29:26,338 INFO L226 Difference]: Without dead ends: 3584 [2021-12-18 05:29:26,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-18 05:29:26,349 INFO L933 BasicCegarLoop]: 2381 mSDtfsCounter, 4460 mSDsluCounter, 4923 mSDsCounter, 0 mSdLazyCounter, 3133 mSolverCounterSat, 2150 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4812 SdHoareTripleChecker+Valid, 7304 SdHoareTripleChecker+Invalid, 5286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2150 IncrementalHoareTripleChecker+Valid, 3133 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2021-12-18 05:29:26,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4812 Valid, 7304 Invalid, 5286 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2150 Valid, 3133 Invalid, 3 Unknown, 0 Unchecked, 16.4s Time] [2021-12-18 05:29:26,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3584 states. [2021-12-18 05:29:26,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3584 to 2903. [2021-12-18 05:29:26,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2903 states, 2111 states have (on average 1.4272856466129797) internal successors, (3013), 2146 states have internal predecessors, (3013), 648 states have call successors, (648), 143 states have call predecessors, (648), 143 states have return successors, (647), 643 states have call predecessors, (647), 647 states have call successors, (647) [2021-12-18 05:29:26,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2903 states to 2903 states and 4308 transitions. [2021-12-18 05:29:26,463 INFO L78 Accepts]: Start accepts. Automaton has 2903 states and 4308 transitions. Word has length 224 [2021-12-18 05:29:26,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:29:26,464 INFO L470 AbstractCegarLoop]: Abstraction has 2903 states and 4308 transitions. [2021-12-18 05:29:26,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (21), 5 states have call predecessors, (21), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2021-12-18 05:29:26,465 INFO L276 IsEmpty]: Start isEmpty. Operand 2903 states and 4308 transitions. [2021-12-18 05:29:26,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-12-18 05:29:26,469 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:29:26,469 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 05:29:26,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 05:29:26,469 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:29:26,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:29:26,470 INFO L85 PathProgramCache]: Analyzing trace with hash -42409691, now seen corresponding path program 1 times [2021-12-18 05:29:26,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:29:26,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932042210] [2021-12-18 05:29:26,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:29:26,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:29:26,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:26,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:29:26,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:26,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:26,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:26,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:29:26,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:26,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 05:29:26,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:26,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:26,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:26,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:29:26,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:26,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 05:29:26,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:26,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:26,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:26,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:29:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:26,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 05:29:26,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:26,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:26,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:26,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:29:26,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:26,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 05:29:26,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:26,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:26,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:29:26,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:26,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-18 05:29:26,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:26,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:26,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:26,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-18 05:29:26,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:26,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:26,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-18 05:29:26,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:26,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:26,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:26,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-18 05:29:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:26,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:26,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:26,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-18 05:29:26,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:26,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:26,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:26,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-18 05:29:26,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:26,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:26,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:26,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-18 05:29:26,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:26,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:26,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:27,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-18 05:29:27,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:27,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:27,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:27,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-18 05:29:27,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:27,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:27,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:27,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-18 05:29:27,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:27,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:27,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:27,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-12-18 05:29:27,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:27,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:27,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:27,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-18 05:29:27,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:27,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:27,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:27,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-12-18 05:29:27,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:27,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-12-18 05:29:27,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:27,130 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2021-12-18 05:29:27,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:29:27,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932042210] [2021-12-18 05:29:27,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932042210] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 05:29:27,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 05:29:27,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 05:29:27,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181723906] [2021-12-18 05:29:27,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 05:29:27,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 05:29:27,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:29:27,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 05:29:27,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 05:29:27,135 INFO L87 Difference]: Start difference. First operand 2903 states and 4308 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (23), 5 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-18 05:29:29,183 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:29:36,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:29:36,125 INFO L93 Difference]: Finished difference Result 7111 states and 11266 transitions. [2021-12-18 05:29:36,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 05:29:36,126 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (23), 5 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 244 [2021-12-18 05:29:36,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:29:36,169 INFO L225 Difference]: With dead ends: 7111 [2021-12-18 05:29:36,170 INFO L226 Difference]: Without dead ends: 7103 [2021-12-18 05:29:36,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-18 05:29:36,182 INFO L933 BasicCegarLoop]: 2444 mSDtfsCounter, 5934 mSDsluCounter, 3088 mSDsCounter, 0 mSdLazyCounter, 1791 mSolverCounterSat, 3249 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6289 SdHoareTripleChecker+Valid, 5532 SdHoareTripleChecker+Invalid, 5041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3249 IncrementalHoareTripleChecker+Valid, 1791 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2021-12-18 05:29:36,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6289 Valid, 5532 Invalid, 5041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3249 Valid, 1791 Invalid, 1 Unknown, 0 Unchecked, 8.7s Time] [2021-12-18 05:29:36,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7103 states. [2021-12-18 05:29:36,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7103 to 5748. [2021-12-18 05:29:36,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5748 states, 4190 states have (on average 1.4295942720763724) internal successors, (5990), 4259 states have internal predecessors, (5990), 1275 states have call successors, (1275), 284 states have call predecessors, (1275), 282 states have return successors, (1274), 1264 states have call predecessors, (1274), 1274 states have call successors, (1274) [2021-12-18 05:29:36,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5748 states to 5748 states and 8539 transitions. [2021-12-18 05:29:36,377 INFO L78 Accepts]: Start accepts. Automaton has 5748 states and 8539 transitions. Word has length 244 [2021-12-18 05:29:36,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:29:36,378 INFO L470 AbstractCegarLoop]: Abstraction has 5748 states and 8539 transitions. [2021-12-18 05:29:36,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (23), 5 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-18 05:29:36,378 INFO L276 IsEmpty]: Start isEmpty. Operand 5748 states and 8539 transitions. [2021-12-18 05:29:36,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2021-12-18 05:29:36,390 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:29:36,390 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 05:29:36,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-18 05:29:36,390 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:29:36,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:29:36,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1026238734, now seen corresponding path program 1 times [2021-12-18 05:29:36,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:29:36,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813611540] [2021-12-18 05:29:36,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:29:36,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:29:36,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:36,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:29:36,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:36,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:36,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:36,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:29:36,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:36,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 05:29:36,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:36,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:36,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:36,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:29:36,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:36,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 05:29:36,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:36,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:36,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:36,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:29:36,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:36,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 05:29:36,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:36,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:36,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:36,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:29:36,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:36,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 05:29:36,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:36,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:36,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:36,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:29:36,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:36,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-18 05:29:36,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:36,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:36,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:36,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-18 05:29:36,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:36,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:36,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:36,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-18 05:29:36,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:36,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:36,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:36,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-18 05:29:36,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:36,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:36,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:36,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-18 05:29:36,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:36,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:36,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:36,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-18 05:29:36,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:36,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:36,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:36,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-18 05:29:36,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:36,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:36,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:36,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-18 05:29:36,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:36,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:36,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:36,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-18 05:29:36,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:36,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:36,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:36,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-18 05:29:36,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:36,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:36,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:36,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-12-18 05:29:36,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:36,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:36,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:36,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-18 05:29:36,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:36,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:36,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:37,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-12-18 05:29:37,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:37,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-12-18 05:29:37,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:37,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-12-18 05:29:37,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:37,014 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2021-12-18 05:29:37,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:29:37,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813611540] [2021-12-18 05:29:37,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813611540] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 05:29:37,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 05:29:37,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 05:29:37,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294782642] [2021-12-18 05:29:37,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 05:29:37,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 05:29:37,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:29:37,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 05:29:37,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-18 05:29:37,018 INFO L87 Difference]: Start difference. First operand 5748 states and 8539 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (24), 5 states have call predecessors, (24), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2021-12-18 05:29:39,067 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:29:41,074 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:29:43,080 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:29:47,722 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:29:58,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:29:58,171 INFO L93 Difference]: Finished difference Result 16856 states and 28118 transitions. [2021-12-18 05:29:58,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 05:29:58,172 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (24), 5 states have call predecessors, (24), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 254 [2021-12-18 05:29:58,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:29:58,250 INFO L225 Difference]: With dead ends: 16856 [2021-12-18 05:29:58,251 INFO L226 Difference]: Without dead ends: 11150 [2021-12-18 05:29:58,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-12-18 05:29:58,288 INFO L933 BasicCegarLoop]: 3337 mSDtfsCounter, 4747 mSDsluCounter, 15651 mSDsCounter, 0 mSdLazyCounter, 5238 mSolverCounterSat, 2710 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5043 SdHoareTripleChecker+Valid, 18988 SdHoareTripleChecker+Invalid, 7951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2710 IncrementalHoareTripleChecker+Valid, 5238 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.5s IncrementalHoareTripleChecker+Time [2021-12-18 05:29:58,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5043 Valid, 18988 Invalid, 7951 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2710 Valid, 5238 Invalid, 3 Unknown, 0 Unchecked, 20.5s Time] [2021-12-18 05:29:58,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11150 states. [2021-12-18 05:29:58,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11150 to 5752. [2021-12-18 05:29:58,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5752 states, 4194 states have (on average 1.4291845493562232) internal successors, (5994), 4263 states have internal predecessors, (5994), 1275 states have call successors, (1275), 284 states have call predecessors, (1275), 282 states have return successors, (1274), 1264 states have call predecessors, (1274), 1274 states have call successors, (1274) [2021-12-18 05:29:58,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5752 states to 5752 states and 8543 transitions. [2021-12-18 05:29:58,628 INFO L78 Accepts]: Start accepts. Automaton has 5752 states and 8543 transitions. Word has length 254 [2021-12-18 05:29:58,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:29:58,629 INFO L470 AbstractCegarLoop]: Abstraction has 5752 states and 8543 transitions. [2021-12-18 05:29:58,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (24), 5 states have call predecessors, (24), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2021-12-18 05:29:58,630 INFO L276 IsEmpty]: Start isEmpty. Operand 5752 states and 8543 transitions. [2021-12-18 05:29:58,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2021-12-18 05:29:58,640 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:29:58,640 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 05:29:58,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-18 05:29:58,641 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:29:58,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:29:58,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1467233190, now seen corresponding path program 1 times [2021-12-18 05:29:58,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:29:58,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746198865] [2021-12-18 05:29:58,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:29:58,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:29:58,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:58,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:29:58,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:58,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:58,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:58,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:29:58,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:58,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 05:29:58,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:58,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:58,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:58,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:29:58,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:58,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 05:29:59,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:59,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:59,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:59,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:29:59,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:59,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 05:29:59,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:59,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:59,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:59,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:29:59,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:59,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 05:29:59,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:59,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:59,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:59,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:29:59,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:59,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-18 05:29:59,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:59,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:59,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:59,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-18 05:29:59,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:59,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:59,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:59,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-18 05:29:59,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:59,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:59,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:59,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-18 05:29:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:59,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:59,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:59,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-18 05:29:59,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:59,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:59,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:59,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-18 05:29:59,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:59,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:59,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-18 05:29:59,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:59,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:59,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:59,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-18 05:29:59,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:59,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:59,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:59,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-18 05:29:59,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:59,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:59,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:59,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-18 05:29:59,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:59,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:59,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:59,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-12-18 05:29:59,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:59,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:59,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:59,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-18 05:29:59,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:59,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:29:59,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:59,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-12-18 05:29:59,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:59,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-12-18 05:29:59,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:59,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-12-18 05:29:59,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:59,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-12-18 05:29:59,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:59,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-12-18 05:29:59,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:29:59,223 INFO L134 CoverageAnalysis]: Checked inductivity of 771 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 752 trivial. 0 not checked. [2021-12-18 05:29:59,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:29:59,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746198865] [2021-12-18 05:29:59,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746198865] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 05:29:59,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 05:29:59,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 05:29:59,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094864384] [2021-12-18 05:29:59,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 05:29:59,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 05:29:59,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:29:59,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 05:29:59,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-18 05:29:59,226 INFO L87 Difference]: Start difference. First operand 5752 states and 8543 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (26), 5 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-18 05:30:01,284 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:30:06,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:30:06,492 INFO L93 Difference]: Finished difference Result 11918 states and 18705 transitions. [2021-12-18 05:30:06,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 05:30:06,492 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (26), 5 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 282 [2021-12-18 05:30:06,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:30:06,536 INFO L225 Difference]: With dead ends: 11918 [2021-12-18 05:30:06,537 INFO L226 Difference]: Without dead ends: 6208 [2021-12-18 05:30:06,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-18 05:30:06,558 INFO L933 BasicCegarLoop]: 2672 mSDtfsCounter, 4695 mSDsluCounter, 3586 mSDsCounter, 0 mSdLazyCounter, 1580 mSolverCounterSat, 2310 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5007 SdHoareTripleChecker+Valid, 6258 SdHoareTripleChecker+Invalid, 3891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2310 IncrementalHoareTripleChecker+Valid, 1580 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-12-18 05:30:06,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5007 Valid, 6258 Invalid, 3891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2310 Valid, 1580 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2021-12-18 05:30:06,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6208 states. [2021-12-18 05:30:06,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6208 to 4364. [2021-12-18 05:30:06,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4364 states, 3179 states have (on average 1.425920100660585) internal successors, (4533), 3231 states have internal predecessors, (4533), 970 states have call successors, (970), 216 states have call predecessors, (970), 214 states have return successors, (969), 961 states have call predecessors, (969), 969 states have call successors, (969) [2021-12-18 05:30:06,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4364 states to 4364 states and 6472 transitions. [2021-12-18 05:30:06,723 INFO L78 Accepts]: Start accepts. Automaton has 4364 states and 6472 transitions. Word has length 282 [2021-12-18 05:30:06,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:30:06,724 INFO L470 AbstractCegarLoop]: Abstraction has 4364 states and 6472 transitions. [2021-12-18 05:30:06,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (26), 5 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-18 05:30:06,724 INFO L276 IsEmpty]: Start isEmpty. Operand 4364 states and 6472 transitions. [2021-12-18 05:30:06,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2021-12-18 05:30:06,736 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:30:06,736 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 05:30:06,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-18 05:30:06,736 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:30:06,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:30:06,737 INFO L85 PathProgramCache]: Analyzing trace with hash -221061418, now seen corresponding path program 1 times [2021-12-18 05:30:06,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:30:06,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108583437] [2021-12-18 05:30:06,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:30:06,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:30:06,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:30:07,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:07,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:07,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 05:30:07,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:07,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:07,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 05:30:07,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:07,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:07,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 05:30:07,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:07,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:07,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 05:30:07,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:07,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:07,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-18 05:30:07,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:07,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-18 05:30:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-18 05:30:07,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:07,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-18 05:30:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:07,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-18 05:30:07,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:07,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-18 05:30:07,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-18 05:30:07,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:07,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-18 05:30:07,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:07,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-18 05:30:07,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:07,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-18 05:30:07,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:07,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-12-18 05:30:07,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:07,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-18 05:30:07,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:07,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-12-18 05:30:07,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-12-18 05:30:07,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-12-18 05:30:07,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-12-18 05:30:07,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:07,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:07,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2021-12-18 05:30:07,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:07,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:07,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2021-12-18 05:30:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2021-12-18 05:30:07,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:07,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2021-12-18 05:30:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:07,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:07,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2021-12-18 05:30:07,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:07,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:07,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2021-12-18 05:30:07,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:07,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2021-12-18 05:30:07,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2021-12-18 05:30:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:07,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:07,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2021-12-18 05:30:07,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:07,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:07,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1698 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 1621 trivial. 0 not checked. [2021-12-18 05:30:07,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:30:07,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108583437] [2021-12-18 05:30:07,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108583437] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 05:30:07,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991797665] [2021-12-18 05:30:07,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:30:07,532 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 05:30:07,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 05:30:07,533 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) [2021-12-18 05:30:07,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-18 05:30:08,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:08,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 5782 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-18 05:30:08,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 05:30:10,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1698 backedges. 565 proven. 0 refuted. 0 times theorem prover too weak. 1133 trivial. 0 not checked. [2021-12-18 05:30:10,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 05:30:10,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991797665] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 05:30:10,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 05:30:10,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 12 [2021-12-18 05:30:10,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893169949] [2021-12-18 05:30:10,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 05:30:10,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 05:30:10,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:30:10,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 05:30:10,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-18 05:30:10,318 INFO L87 Difference]: Start difference. First operand 4364 states and 6472 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-12-18 05:30:10,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:30:10,821 INFO L93 Difference]: Finished difference Result 7300 states and 10818 transitions. [2021-12-18 05:30:10,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 05:30:10,822 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 404 [2021-12-18 05:30:10,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:30:10,840 INFO L225 Difference]: With dead ends: 7300 [2021-12-18 05:30:10,840 INFO L226 Difference]: Without dead ends: 4366 [2021-12-18 05:30:10,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 533 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-18 05:30:10,852 INFO L933 BasicCegarLoop]: 2763 mSDtfsCounter, 2723 mSDsluCounter, 2272 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2723 SdHoareTripleChecker+Valid, 5035 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-18 05:30:10,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2723 Valid, 5035 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-18 05:30:10,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4366 states. [2021-12-18 05:30:10,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4366 to 4364. [2021-12-18 05:30:10,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4364 states, 3179 states have (on average 1.4252909720037747) internal successors, (4531), 3231 states have internal predecessors, (4531), 970 states have call successors, (970), 216 states have call predecessors, (970), 214 states have return successors, (969), 961 states have call predecessors, (969), 969 states have call successors, (969) [2021-12-18 05:30:10,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4364 states to 4364 states and 6470 transitions. [2021-12-18 05:30:10,973 INFO L78 Accepts]: Start accepts. Automaton has 4364 states and 6470 transitions. Word has length 404 [2021-12-18 05:30:10,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:30:10,973 INFO L470 AbstractCegarLoop]: Abstraction has 4364 states and 6470 transitions. [2021-12-18 05:30:10,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-12-18 05:30:10,973 INFO L276 IsEmpty]: Start isEmpty. Operand 4364 states and 6470 transitions. [2021-12-18 05:30:10,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2021-12-18 05:30:10,983 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:30:10,983 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 05:30:11,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-18 05:30:11,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-18 05:30:11,197 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:30:11,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:30:11,197 INFO L85 PathProgramCache]: Analyzing trace with hash 2107919124, now seen corresponding path program 1 times [2021-12-18 05:30:11,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:30:11,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734016627] [2021-12-18 05:30:11,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:30:11,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:30:11,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:30:11,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:11,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:11,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 05:30:11,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:11,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 05:30:11,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:11,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:11,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 05:30:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:11,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:11,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 05:30:11,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:11,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-18 05:30:11,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:11,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-18 05:30:11,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:11,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-18 05:30:11,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:11,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-18 05:30:11,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:11,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-18 05:30:11,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:11,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-18 05:30:11,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:11,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-18 05:30:11,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:11,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-18 05:30:11,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:11,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-18 05:30:11,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:11,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-18 05:30:11,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:11,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-12-18 05:30:11,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:11,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-18 05:30:11,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:11,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-12-18 05:30:11,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-12-18 05:30:11,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-12-18 05:30:11,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-12-18 05:30:11,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:11,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:11,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2021-12-18 05:30:11,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:11,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:11,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2021-12-18 05:30:11,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2021-12-18 05:30:11,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:11,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:11,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2021-12-18 05:30:11,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:11,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:11,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2021-12-18 05:30:11,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:11,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:11,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2021-12-18 05:30:11,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:11,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:11,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2021-12-18 05:30:11,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2021-12-18 05:30:11,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:11,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:11,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2021-12-18 05:30:11,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:11,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:11,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:11,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1698 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 1621 trivial. 0 not checked. [2021-12-18 05:30:11,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:30:11,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734016627] [2021-12-18 05:30:11,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734016627] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 05:30:11,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446697749] [2021-12-18 05:30:11,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:30:11,898 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 05:30:11,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 05:30:11,899 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 05:30:11,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-18 05:30:13,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:13,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 5782 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-18 05:30:13,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 05:30:14,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1698 backedges. 565 proven. 0 refuted. 0 times theorem prover too weak. 1133 trivial. 0 not checked. [2021-12-18 05:30:14,825 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 05:30:14,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446697749] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 05:30:14,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 05:30:14,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 12 [2021-12-18 05:30:14,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053212566] [2021-12-18 05:30:14,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 05:30:14,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 05:30:14,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:30:14,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 05:30:14,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-18 05:30:14,827 INFO L87 Difference]: Start difference. First operand 4364 states and 6470 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-12-18 05:30:15,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:30:15,284 INFO L93 Difference]: Finished difference Result 7300 states and 10814 transitions. [2021-12-18 05:30:15,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 05:30:15,285 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 404 [2021-12-18 05:30:15,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:30:15,299 INFO L225 Difference]: With dead ends: 7300 [2021-12-18 05:30:15,299 INFO L226 Difference]: Without dead ends: 4366 [2021-12-18 05:30:15,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 533 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-18 05:30:15,308 INFO L933 BasicCegarLoop]: 2762 mSDtfsCounter, 2730 mSDsluCounter, 2266 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2730 SdHoareTripleChecker+Valid, 5028 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-18 05:30:15,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2730 Valid, 5028 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-18 05:30:15,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4366 states. [2021-12-18 05:30:15,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4366 to 4364. [2021-12-18 05:30:15,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4364 states, 3179 states have (on average 1.4246618433469644) internal successors, (4529), 3231 states have internal predecessors, (4529), 970 states have call successors, (970), 216 states have call predecessors, (970), 214 states have return successors, (969), 961 states have call predecessors, (969), 969 states have call successors, (969) [2021-12-18 05:30:15,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4364 states to 4364 states and 6468 transitions. [2021-12-18 05:30:15,439 INFO L78 Accepts]: Start accepts. Automaton has 4364 states and 6468 transitions. Word has length 404 [2021-12-18 05:30:15,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:30:15,439 INFO L470 AbstractCegarLoop]: Abstraction has 4364 states and 6468 transitions. [2021-12-18 05:30:15,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-12-18 05:30:15,440 INFO L276 IsEmpty]: Start isEmpty. Operand 4364 states and 6468 transitions. [2021-12-18 05:30:15,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2021-12-18 05:30:15,449 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:30:15,450 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 05:30:15,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-18 05:30:15,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-12-18 05:30:15,656 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:30:15,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:30:15,656 INFO L85 PathProgramCache]: Analyzing trace with hash -429421034, now seen corresponding path program 1 times [2021-12-18 05:30:15,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:30:15,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124510839] [2021-12-18 05:30:15,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:30:15,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:30:15,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:15,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:30:15,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:15,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:15,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:15,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:15,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:15,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 05:30:15,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:15,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:15,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:15,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:15,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:15,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 05:30:15,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:15,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:15,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:15,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:15,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:15,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 05:30:15,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:15,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:15,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:15,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:15,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:15,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 05:30:15,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:15,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:15,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:15,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:15,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:15,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-18 05:30:16,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-18 05:30:16,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:16,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-18 05:30:16,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:16,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-18 05:30:16,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:16,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-18 05:30:16,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:16,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-18 05:30:16,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:16,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-18 05:30:16,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:16,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-18 05:30:16,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:16,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-18 05:30:16,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:16,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-18 05:30:16,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:16,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-12-18 05:30:16,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:16,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-18 05:30:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:16,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-12-18 05:30:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-12-18 05:30:16,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-12-18 05:30:16,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-12-18 05:30:16,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:16,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:16,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2021-12-18 05:30:16,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:16,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:16,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2021-12-18 05:30:16,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2021-12-18 05:30:16,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:16,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:16,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2021-12-18 05:30:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:16,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:16,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2021-12-18 05:30:16,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:16,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:16,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2021-12-18 05:30:16,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:16,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:16,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2021-12-18 05:30:16,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2021-12-18 05:30:16,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:16,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:16,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2021-12-18 05:30:16,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:16,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:16,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:16,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1698 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 1621 trivial. 0 not checked. [2021-12-18 05:30:16,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:30:16,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124510839] [2021-12-18 05:30:16,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124510839] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 05:30:16,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166250105] [2021-12-18 05:30:16,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:30:16,375 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 05:30:16,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 05:30:16,376 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 05:30:16,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-18 05:30:17,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:17,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 5782 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-18 05:30:17,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 05:30:18,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1698 backedges. 659 proven. 0 refuted. 0 times theorem prover too weak. 1039 trivial. 0 not checked. [2021-12-18 05:30:18,376 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 05:30:18,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166250105] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 05:30:18,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 05:30:18,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2021-12-18 05:30:18,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136122031] [2021-12-18 05:30:18,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 05:30:18,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 05:30:18,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:30:18,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 05:30:18,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-12-18 05:30:18,377 INFO L87 Difference]: Start difference. First operand 4364 states and 6468 transitions. Second operand has 6 states, 5 states have (on average 19.8) internal successors, (99), 6 states have internal predecessors, (99), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-12-18 05:30:18,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:30:18,653 INFO L93 Difference]: Finished difference Result 8726 states and 12979 transitions. [2021-12-18 05:30:18,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 05:30:18,654 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.8) internal successors, (99), 6 states have internal predecessors, (99), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 404 [2021-12-18 05:30:18,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:30:18,736 INFO L225 Difference]: With dead ends: 8726 [2021-12-18 05:30:18,739 INFO L226 Difference]: Without dead ends: 4373 [2021-12-18 05:30:18,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 531 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-12-18 05:30:18,749 INFO L933 BasicCegarLoop]: 2214 mSDtfsCounter, 6 mSDsluCounter, 8823 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 11037 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 05:30:18,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 11037 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 05:30:18,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4373 states. [2021-12-18 05:30:18,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4373 to 4373. [2021-12-18 05:30:18,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4373 states, 3185 states have (on average 1.4248037676609104) internal successors, (4538), 3240 states have internal predecessors, (4538), 970 states have call successors, (970), 216 states have call predecessors, (970), 217 states have return successors, (972), 961 states have call predecessors, (972), 969 states have call successors, (972) [2021-12-18 05:30:18,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4373 states to 4373 states and 6480 transitions. [2021-12-18 05:30:18,888 INFO L78 Accepts]: Start accepts. Automaton has 4373 states and 6480 transitions. Word has length 404 [2021-12-18 05:30:18,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:30:18,890 INFO L470 AbstractCegarLoop]: Abstraction has 4373 states and 6480 transitions. [2021-12-18 05:30:18,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.8) internal successors, (99), 6 states have internal predecessors, (99), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-12-18 05:30:18,890 INFO L276 IsEmpty]: Start isEmpty. Operand 4373 states and 6480 transitions. [2021-12-18 05:30:18,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2021-12-18 05:30:18,899 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:30:18,900 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 05:30:18,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-18 05:30:19,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 05:30:19,116 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:30:19,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:30:19,116 INFO L85 PathProgramCache]: Analyzing trace with hash -564552854, now seen corresponding path program 1 times [2021-12-18 05:30:19,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:30:19,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862484862] [2021-12-18 05:30:19,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:30:19,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:30:19,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:30:19,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:19,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 05:30:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:19,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:19,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 05:30:19,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:19,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:19,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 05:30:19,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:19,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 05:30:19,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:19,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:19,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-18 05:30:19,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:19,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-18 05:30:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:19,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-18 05:30:19,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:19,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-18 05:30:19,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:19,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 05:30:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:19,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-18 05:30:19,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:19,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-18 05:30:19,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:19,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-18 05:30:19,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:19,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-12-18 05:30:19,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:19,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-18 05:30:19,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2021-12-18 05:30:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:19,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-12-18 05:30:19,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:19,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-12-18 05:30:19,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-18 05:30:19,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-12-18 05:30:19,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2021-12-18 05:30:19,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:19,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:19,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2021-12-18 05:30:19,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:19,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:19,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2021-12-18 05:30:19,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-12-18 05:30:19,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:19,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-12-18 05:30:19,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:19,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:19,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2021-12-18 05:30:19,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:19,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:19,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2021-12-18 05:30:19,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:19,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:19,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2021-12-18 05:30:19,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2021-12-18 05:30:19,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:19,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:19,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2021-12-18 05:30:19,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:19,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:19,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:19,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1908 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 1797 trivial. 0 not checked. [2021-12-18 05:30:19,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:30:19,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862484862] [2021-12-18 05:30:19,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862484862] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 05:30:19,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010936609] [2021-12-18 05:30:19,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:30:19,860 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 05:30:19,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 05:30:19,876 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 05:30:19,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-18 05:30:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:22,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 5962 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-18 05:30:22,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 05:30:23,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1908 backedges. 692 proven. 1 refuted. 0 times theorem prover too weak. 1215 trivial. 0 not checked. [2021-12-18 05:30:23,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 05:30:24,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1908 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 1797 trivial. 0 not checked. [2021-12-18 05:30:24,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010936609] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 05:30:24,025 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 05:30:24,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2021-12-18 05:30:24,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227422703] [2021-12-18 05:30:24,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 05:30:24,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-18 05:30:24,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 05:30:24,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-18 05:30:24,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2021-12-18 05:30:24,028 INFO L87 Difference]: Start difference. First operand 4373 states and 6480 transitions. Second operand has 17 states, 15 states have (on average 8.733333333333333) internal successors, (131), 13 states have internal predecessors, (131), 4 states have call successors, (93), 6 states have call predecessors, (93), 6 states have return successors, (64), 4 states have call predecessors, (64), 4 states have call successors, (64) [2021-12-18 05:30:26,071 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:30:28,083 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 05:30:41,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 05:30:41,885 INFO L93 Difference]: Finished difference Result 10342 states and 16100 transitions. [2021-12-18 05:30:41,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-18 05:30:41,886 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 8.733333333333333) internal successors, (131), 13 states have internal predecessors, (131), 4 states have call successors, (93), 6 states have call predecessors, (93), 6 states have return successors, (64), 4 states have call predecessors, (64), 4 states have call successors, (64) Word has length 416 [2021-12-18 05:30:41,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 05:30:41,914 INFO L225 Difference]: With dead ends: 10342 [2021-12-18 05:30:41,914 INFO L226 Difference]: Without dead ends: 5980 [2021-12-18 05:30:41,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 983 GetRequests, 953 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=135, Invalid=621, Unknown=0, NotChecked=0, Total=756 [2021-12-18 05:30:41,930 INFO L933 BasicCegarLoop]: 2193 mSDtfsCounter, 2679 mSDsluCounter, 17909 mSDsCounter, 0 mSdLazyCounter, 5550 mSolverCounterSat, 2133 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2786 SdHoareTripleChecker+Valid, 20102 SdHoareTripleChecker+Invalid, 7685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2133 IncrementalHoareTripleChecker+Valid, 5550 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2021-12-18 05:30:41,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2786 Valid, 20102 Invalid, 7685 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2133 Valid, 5550 Invalid, 2 Unknown, 0 Unchecked, 17.2s Time] [2021-12-18 05:30:41,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5980 states. [2021-12-18 05:30:42,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5980 to 4381. [2021-12-18 05:30:42,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4381 states, 3191 states have (on average 1.4249451582575996) internal successors, (4547), 3246 states have internal predecessors, (4547), 971 states have call successors, (971), 217 states have call predecessors, (971), 218 states have return successors, (973), 962 states have call predecessors, (973), 970 states have call successors, (973) [2021-12-18 05:30:42,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4381 states to 4381 states and 6491 transitions. [2021-12-18 05:30:42,119 INFO L78 Accepts]: Start accepts. Automaton has 4381 states and 6491 transitions. Word has length 416 [2021-12-18 05:30:42,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 05:30:42,120 INFO L470 AbstractCegarLoop]: Abstraction has 4381 states and 6491 transitions. [2021-12-18 05:30:42,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 8.733333333333333) internal successors, (131), 13 states have internal predecessors, (131), 4 states have call successors, (93), 6 states have call predecessors, (93), 6 states have return successors, (64), 4 states have call predecessors, (64), 4 states have call successors, (64) [2021-12-18 05:30:42,120 INFO L276 IsEmpty]: Start isEmpty. Operand 4381 states and 6491 transitions. [2021-12-18 05:30:42,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2021-12-18 05:30:42,129 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 05:30:42,130 INFO L514 BasicCegarLoop]: trace histogram [24, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 05:30:42,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-18 05:30:42,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 05:30:42,340 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 05:30:42,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 05:30:42,340 INFO L85 PathProgramCache]: Analyzing trace with hash -137758570, now seen corresponding path program 2 times [2021-12-18 05:30:42,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 05:30:42,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796615610] [2021-12-18 05:30:42,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 05:30:42,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 05:30:42,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:42,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 05:30:42,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:42,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:42,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:42,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:42,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:42,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 05:30:42,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:42,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:42,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:42,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:42,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:42,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 05:30:42,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:42,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:42,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:42,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:42,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:42,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 05:30:42,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:42,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:42,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:42,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:42,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:42,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 05:30:42,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:42,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:42,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:42,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:42,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:42,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-18 05:30:42,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:42,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:42,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:42,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-18 05:30:42,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:42,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:42,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:42,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-18 05:30:42,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:42,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:42,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:42,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 05:30:42,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:42,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:42,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:42,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-18 05:30:42,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:42,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:42,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:43,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-18 05:30:43,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:43,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:43,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:43,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-18 05:30:43,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:43,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:43,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:43,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-18 05:30:43,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:43,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:43,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:43,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-12-18 05:30:43,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:43,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:43,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:43,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-18 05:30:43,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:43,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:43,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:43,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-12-18 05:30:43,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:43,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:43,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:43,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-12-18 05:30:43,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:43,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:43,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-12-18 05:30:43,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:43,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-12-18 05:30:43,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:43,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2021-12-18 05:30:43,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:43,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2021-12-18 05:30:43,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:43,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:43,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:43,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:43,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:43,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2021-12-18 05:30:43,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:43,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:43,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:43,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:43,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:43,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2021-12-18 05:30:43,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:43,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2021-12-18 05:30:43,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:43,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:43,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:43,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:43,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:43,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2021-12-18 05:30:43,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:43,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:43,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:43,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:43,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:43,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2021-12-18 05:30:43,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:43,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:43,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:43,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:43,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:43,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2021-12-18 05:30:43,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:43,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:43,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:43,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:43,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:43,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2021-12-18 05:30:43,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:43,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2021-12-18 05:30:43,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:43,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:43,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:43,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:43,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:43,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2021-12-18 05:30:43,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:43,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 05:30:43,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:43,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 05:30:43,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 05:30:43,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2262 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 2094 trivial. 0 not checked. [2021-12-18 05:30:43,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 05:30:43,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796615610] [2021-12-18 05:30:43,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796615610] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 05:30:43,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102720699] [2021-12-18 05:30:43,256 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 05:30:43,256 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 05:30:43,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 05:30:43,257 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 05:30:43,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process Killed by 15