./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 e19ca921 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-dev-e19ca92 [2021-12-22 14:49:32,922 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 14:49:32,924 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 14:49:32,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 14:49:32,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 14:49:32,964 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 14:49:32,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 14:49:32,973 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 14:49:32,975 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 14:49:32,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 14:49:32,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 14:49:32,982 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 14:49:32,983 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 14:49:32,985 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 14:49:32,986 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 14:49:32,988 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 14:49:32,989 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 14:49:32,990 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 14:49:32,994 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 14:49:32,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 14:49:32,999 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 14:49:33,000 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 14:49:33,001 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 14:49:33,002 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 14:49:33,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 14:49:33,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 14:49:33,007 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 14:49:33,008 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 14:49:33,009 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 14:49:33,009 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 14:49:33,010 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 14:49:33,011 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 14:49:33,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 14:49:33,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 14:49:33,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 14:49:33,014 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 14:49:33,015 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 14:49:33,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 14:49:33,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 14:49:33,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 14:49:33,017 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 14:49:33,018 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 14:49:33,050 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 14:49:33,050 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 14:49:33,051 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 14:49:33,051 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 14:49:33,052 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 14:49:33,052 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 14:49:33,053 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 14:49:33,053 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 14:49:33,053 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 14:49:33,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 14:49:33,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 14:49:33,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 14:49:33,054 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 14:49:33,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 14:49:33,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 14:49:33,055 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 14:49:33,055 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 14:49:33,055 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 14:49:33,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 14:49:33,056 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 14:49:33,056 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 14:49:33,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:49:33,056 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 14:49:33,057 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 14:49:33,057 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 14:49:33,057 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 14:49:33,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 14:49:33,057 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 14:49:33,057 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 14:49:33,058 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 14:49:33,058 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 14:49:33,058 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec1c916a4e8241683d3d78dd3b5f266227914917d53067d3c7741f08a3fdd65b [2021-12-22 14:49:33,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 14:49:33,264 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 14:49:33,267 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 14:49:33,268 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 14:49:33,269 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 14:49:33,271 INFO L432 ainManager$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 [2021-12-22 14:49:33,338 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a14293ea0/6878899fc0c04264bd1c4082fa3608a2/FLAGe1acbc93d [2021-12-22 14:49:33,955 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 14:49:33,956 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 [2021-12-22 14:49:34,003 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a14293ea0/6878899fc0c04264bd1c4082fa3608a2/FLAGe1acbc93d [2021-12-22 14:49:34,115 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a14293ea0/6878899fc0c04264bd1c4082fa3608a2 [2021-12-22 14:49:34,117 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 14:49:34,119 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 14:49:34,123 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 14:49:34,123 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 14:49:34,126 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 14:49:34,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:49:34" (1/1) ... [2021-12-22 14:49:34,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45bb4d1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:49:34, skipping insertion in model container [2021-12-22 14:49:34,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:49:34" (1/1) ... [2021-12-22 14:49:34,133 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 14:49:34,220 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 14:49:35,254 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] [2021-12-22 14:49:35,282 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:49:35,345 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 14:49:35,582 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] [2021-12-22 14:49:35,596 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:49:35,669 INFO L208 MainTranslator]: Completed translation [2021-12-22 14:49:35,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:49:35 WrapperNode [2021-12-22 14:49:35,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 14:49:35,672 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 14:49:35,673 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 14:49:35,673 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 14:49:35,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:49:35" (1/1) ... [2021-12-22 14:49:35,769 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:49:35" (1/1) ... [2021-12-22 14:49:35,898 INFO L137 Inliner]: procedures = 187, calls = 2219, calls flagged for inlining = 71, calls inlined = 71, statements flattened = 4636 [2021-12-22 14:49:35,899 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 14:49:35,900 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 14:49:35,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 14:49:35,900 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 14:49:35,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:49:35" (1/1) ... [2021-12-22 14:49:35,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:49:35" (1/1) ... [2021-12-22 14:49:35,957 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:49:35" (1/1) ... [2021-12-22 14:49:35,958 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:49:35" (1/1) ... [2021-12-22 14:49:36,089 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:49:35" (1/1) ... [2021-12-22 14:49:36,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:49:35" (1/1) ... [2021-12-22 14:49:36,146 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:49:35" (1/1) ... [2021-12-22 14:49:36,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 14:49:36,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 14:49:36,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 14:49:36,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 14:49:36,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:49:35" (1/1) ... [2021-12-22 14:49:36,192 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:49:36,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:49:36,221 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) [2021-12-22 14:49:36,245 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 [2021-12-22 14:49:36,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-12-22 14:49:36,260 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-12-22 14:49:36,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-22 14:49:36,260 INFO L130 BoogieDeclarations]: Found specification of procedure ti_bulk_in_callback [2021-12-22 14:49:36,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_bulk_in_callback [2021-12-22 14:49:36,260 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-12-22 14:49:36,261 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-12-22 14:49:36,261 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-12-22 14:49:36,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-22 14:49:36,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-22 14:49:36,261 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-22 14:49:36,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-22 14:49:36,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 14:49:36,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-22 14:49:36,262 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-22 14:49:36,262 INFO L130 BoogieDeclarations]: Found specification of procedure tty_kref_put [2021-12-22 14:49:36,262 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_kref_put [2021-12-22 14:49:36,262 INFO L130 BoogieDeclarations]: Found specification of procedure ti_throttle [2021-12-22 14:49:36,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_throttle [2021-12-22 14:49:36,262 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_serial_deregister [2021-12-22 14:49:36,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_serial_deregister [2021-12-22 14:49:36,263 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_port_data [2021-12-22 14:49:36,263 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_port_data [2021-12-22 14:49:36,263 INFO L130 BoogieDeclarations]: Found specification of procedure ti_command_out_sync [2021-12-22 14:49:36,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_command_out_sync [2021-12-22 14:49:36,263 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-22 14:49:36,263 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-22 14:49:36,264 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-22 14:49:36,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-22 14:49:36,264 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-22 14:49:36,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-22 14:49:36,264 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-22 14:49:36,264 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-22 14:49:36,264 INFO L130 BoogieDeclarations]: Found specification of procedure ti_open [2021-12-22 14:49:36,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_open [2021-12-22 14:49:36,265 INFO L130 BoogieDeclarations]: Found specification of procedure ti_bulk_out_callback [2021-12-22 14:49:36,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_bulk_out_callback [2021-12-22 14:49:36,265 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2021-12-22 14:49:36,265 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2021-12-22 14:49:36,265 INFO L130 BoogieDeclarations]: Found specification of procedure ti_tiocmset [2021-12-22 14:49:36,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_tiocmset [2021-12-22 14:49:36,265 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-22 14:49:36,266 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-22 14:49:36,266 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2021-12-22 14:49:36,266 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2021-12-22 14:49:36,266 INFO L130 BoogieDeclarations]: Found specification of procedure ti_set_mcr [2021-12-22 14:49:36,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_set_mcr [2021-12-22 14:49:36,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 14:49:36,266 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-22 14:49:36,267 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-22 14:49:36,267 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-22 14:49:36,267 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-22 14:49:36,267 INFO L130 BoogieDeclarations]: Found specification of procedure ti_write_byte [2021-12-22 14:49:36,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_write_byte [2021-12-22 14:49:36,267 INFO L130 BoogieDeclarations]: Found specification of procedure ti_chars_in_buffer [2021-12-22 14:49:36,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_chars_in_buffer [2021-12-22 14:49:36,271 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-22 14:49:36,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-22 14:49:36,272 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-12-22 14:49:36,273 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-12-22 14:49:36,273 INFO L130 BoogieDeclarations]: Found specification of procedure ti_startup [2021-12-22 14:49:36,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_startup [2021-12-22 14:49:36,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-22 14:49:36,273 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-22 14:49:36,273 INFO L130 BoogieDeclarations]: Found specification of procedure ti_ioctl [2021-12-22 14:49:36,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_ioctl [2021-12-22 14:49:36,274 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_register [2021-12-22 14:49:36,274 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_register [2021-12-22 14:49:36,274 INFO L130 BoogieDeclarations]: Found specification of procedure ti_write_room [2021-12-22 14:49:36,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_write_room [2021-12-22 14:49:36,274 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-22 14:49:36,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-22 14:49:36,274 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-22 14:49:36,274 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-22 14:49:36,275 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_detach_2 [2021-12-22 14:49:36,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_detach_2 [2021-12-22 14:49:36,275 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_detach_1 [2021-12-22 14:49:36,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_detach_1 [2021-12-22 14:49:36,276 INFO L130 BoogieDeclarations]: Found specification of procedure ti_tiocmget [2021-12-22 14:49:36,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_tiocmget [2021-12-22 14:49:36,276 INFO L130 BoogieDeclarations]: Found specification of procedure msleep_interruptible [2021-12-22 14:49:36,276 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep_interruptible [2021-12-22 14:49:36,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 14:49:36,276 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_free [2021-12-22 14:49:36,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_free [2021-12-22 14:49:36,277 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2021-12-22 14:49:36,277 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2021-12-22 14:49:36,277 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-22 14:49:36,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-22 14:49:36,277 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-22 14:49:36,278 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-22 14:49:36,278 INFO L130 BoogieDeclarations]: Found specification of procedure ti_interrupt_callback [2021-12-22 14:49:36,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_interrupt_callback [2021-12-22 14:49:36,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 14:49:36,278 INFO L130 BoogieDeclarations]: Found specification of procedure tty_wakeup [2021-12-22 14:49:36,279 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_wakeup [2021-12-22 14:49:36,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-22 14:49:36,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-22 14:49:36,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 14:49:36,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 14:49:36,280 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-22 14:49:36,280 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_data [2021-12-22 14:49:36,280 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_data [2021-12-22 14:49:36,281 INFO L130 BoogieDeclarations]: Found specification of procedure ti_close [2021-12-22 14:49:36,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_close [2021-12-22 14:49:36,281 INFO L130 BoogieDeclarations]: Found specification of procedure ti_break [2021-12-22 14:49:36,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_break [2021-12-22 14:49:36,281 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-12-22 14:49:36,281 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-12-22 14:49:36,281 INFO L130 BoogieDeclarations]: Found specification of procedure __swab16s [2021-12-22 14:49:36,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab16s [2021-12-22 14:49:36,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 14:49:36,282 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-12-22 14:49:36,282 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-12-22 14:49:36,282 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-22 14:49:36,282 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-22 14:49:36,282 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2021-12-22 14:49:36,283 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2021-12-22 14:49:36,284 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-22 14:49:36,285 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-22 14:49:36,286 INFO L130 BoogieDeclarations]: Found specification of procedure ti_unthrottle [2021-12-22 14:49:36,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_unthrottle [2021-12-22 14:49:36,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 14:49:36,288 INFO L130 BoogieDeclarations]: Found specification of procedure ti_write [2021-12-22 14:49:36,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_write [2021-12-22 14:49:36,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 14:49:36,288 INFO L130 BoogieDeclarations]: Found specification of procedure ti_restart_read [2021-12-22 14:49:36,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_restart_read [2021-12-22 14:49:36,293 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-22 14:49:36,293 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-22 14:49:36,294 INFO L130 BoogieDeclarations]: Found specification of procedure ti_release [2021-12-22 14:49:36,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_release [2021-12-22 14:49:36,294 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-22 14:49:36,294 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-22 14:49:36,294 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-22 14:49:36,294 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-22 14:49:36,294 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-22 14:49:36,294 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-22 14:49:36,295 INFO L130 BoogieDeclarations]: Found specification of procedure request_firmware [2021-12-22 14:49:36,295 INFO L138 BoogieDeclarations]: Found implementation of procedure request_firmware [2021-12-22 14:49:36,295 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-22 14:49:36,295 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-22 14:49:36,295 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-22 14:49:36,295 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-22 14:49:36,296 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-22 14:49:36,296 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-22 14:49:36,296 INFO L130 BoogieDeclarations]: Found specification of procedure ti_send [2021-12-22 14:49:36,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_send [2021-12-22 14:49:36,296 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_get [2021-12-22 14:49:36,296 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_get [2021-12-22 14:49:36,296 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-12-22 14:49:36,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-12-22 14:49:36,297 INFO L130 BoogieDeclarations]: Found specification of procedure ti_drain [2021-12-22 14:49:36,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_drain [2021-12-22 14:49:36,297 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-22 14:49:36,297 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-22 14:49:36,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 14:49:36,297 INFO L130 BoogieDeclarations]: Found specification of procedure usb_clear_halt [2021-12-22 14:49:36,297 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_clear_halt [2021-12-22 14:49:36,298 INFO L130 BoogieDeclarations]: Found specification of procedure ti_set_termios [2021-12-22 14:49:36,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_set_termios [2021-12-22 14:49:36,298 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_data [2021-12-22 14:49:36,298 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_data [2021-12-22 14:49:36,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-22 14:49:36,298 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-22 14:49:36,298 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-22 14:49:36,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 14:49:36,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 14:49:37,092 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 14:49:37,096 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 14:49:37,467 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-22 14:50:06,733 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 14:50:06,754 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 14:50:06,754 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 14:50:06,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:50:06 BoogieIcfgContainer [2021-12-22 14:50:06,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 14:50:06,762 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 14:50:06,762 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 14:50:06,765 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 14:50:06,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:49:34" (1/3) ... [2021-12-22 14:50:06,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31159549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:50:06, skipping insertion in model container [2021-12-22 14:50:06,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:49:35" (2/3) ... [2021-12-22 14:50:06,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31159549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:50:06, skipping insertion in model container [2021-12-22 14:50:06,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:50:06" (3/3) ... [2021-12-22 14:50:06,768 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 [2021-12-22 14:50:06,773 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 14:50:06,773 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 14:50:06,834 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 14:50:06,849 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 [2021-12-22 14:50:06,851 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 14:50:06,901 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) [2021-12-22 14:50:06,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-12-22 14:50:06,919 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:50:06,920 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] [2021-12-22 14:50:06,921 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:50:06,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:50:06,928 INFO L85 PathProgramCache]: Analyzing trace with hash -44726715, now seen corresponding path program 1 times [2021-12-22 14:50:06,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:50:06,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165525230] [2021-12-22 14:50:06,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:50:06,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:50:07,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:07,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:50:07,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:07,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:07,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:07,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:50:07,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:07,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 14:50:07,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:07,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:07,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:07,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:50:07,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:07,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 14:50:07,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:07,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:07,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:07,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:50:07,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:07,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 14:50:07,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:07,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:07,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:07,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:50:07,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:07,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-22 14:50:07,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:07,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:07,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:07,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:50:07,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:07,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 14:50:07,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:08,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:08,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:08,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 14:50:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:08,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:08,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:08,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-22 14:50:08,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:08,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:08,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:08,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-22 14:50:08,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:08,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:08,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-22 14:50:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:08,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:08,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:08,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-22 14:50:08,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:08,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:08,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:08,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-22 14:50:08,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:08,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:08,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:08,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-22 14:50:08,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:08,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:08,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:08,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-22 14:50:08,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:08,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:08,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:08,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-22 14:50:08,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:08,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:08,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:08,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-12-22 14:50:08,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:08,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:08,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:08,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-22 14:50:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:08,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:08,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:08,247 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 734 trivial. 0 not checked. [2021-12-22 14:50:08,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:50:08,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165525230] [2021-12-22 14:50:08,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165525230] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:50:08,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:50:08,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 14:50:08,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369406045] [2021-12-22 14:50:08,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:50:08,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 14:50:08,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:50:08,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 14:50:08,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:50:08,292 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) [2021-12-22 14:50:10,368 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 [] [2021-12-22 14:50:15,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:50:15,013 INFO L93 Difference]: Finished difference Result 3395 states and 5387 transitions. [2021-12-22 14:50:15,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 14:50:15,016 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 [2021-12-22 14:50:15,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:50:15,059 INFO L225 Difference]: With dead ends: 3395 [2021-12-22 14:50:15,060 INFO L226 Difference]: Without dead ends: 1853 [2021-12-22 14:50:15,078 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 [2021-12-22 14:50:15,081 INFO L933 BasicCegarLoop]: 2422 mSDtfsCounter, 1603 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 1394 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1657 SdHoareTripleChecker+Valid, 3602 SdHoareTripleChecker+Invalid, 2373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1394 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-12-22 14:50:15,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1657 Valid, 3602 Invalid, 2373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1394 Valid, 978 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2021-12-22 14:50:15,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1853 states. [2021-12-22 14:50:15,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1853 to 1512. [2021-12-22 14:50:15,233 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) [2021-12-22 14:50:15,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 2236 transitions. [2021-12-22 14:50:15,249 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 2236 transitions. Word has length 224 [2021-12-22 14:50:15,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:50:15,250 INFO L470 AbstractCegarLoop]: Abstraction has 1512 states and 2236 transitions. [2021-12-22 14:50:15,250 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) [2021-12-22 14:50:15,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 2236 transitions. [2021-12-22 14:50:15,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-12-22 14:50:15,259 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:50:15,260 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] [2021-12-22 14:50:15,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 14:50:15,260 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:50:15,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:50:15,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1303521969, now seen corresponding path program 1 times [2021-12-22 14:50:15,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:50:15,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708970028] [2021-12-22 14:50:15,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:50:15,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:50:15,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:15,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:50:15,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:15,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:15,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:15,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:50:15,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:15,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 14:50:15,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:15,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:15,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:15,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:50:15,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:15,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 14:50:15,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:15,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:15,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:50:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:15,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 14:50:15,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:15,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:15,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:15,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:50:15,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:15,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-22 14:50:15,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:15,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:15,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:15,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:50:15,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:15,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 14:50:15,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:15,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:15,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:15,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 14:50:15,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:15,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:15,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:15,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-22 14:50:15,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:15,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:15,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:15,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-22 14:50:15,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:15,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:15,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:15,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-22 14:50:15,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:15,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:15,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-22 14:50:15,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:15,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:15,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-22 14:50:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:15,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:15,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-22 14:50:15,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:15,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:15,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:15,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-22 14:50:15,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:15,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:15,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-22 14:50:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:15,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:15,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-12-22 14:50:15,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:15,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:15,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:15,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-22 14:50:15,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:15,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:15,913 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 734 trivial. 0 not checked. [2021-12-22 14:50:15,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:50:15,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708970028] [2021-12-22 14:50:15,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708970028] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:50:15,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:50:15,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:50:15,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364348547] [2021-12-22 14:50:15,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:50:15,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:50:15,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:50:15,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:50:15,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:50:15,917 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) [2021-12-22 14:50:17,964 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:50:19,995 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:50:22,017 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 [] [2021-12-22 14:50:34,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:50:34,916 INFO L93 Difference]: Finished difference Result 5054 states and 7854 transitions. [2021-12-22 14:50:34,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 14:50:34,917 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 [2021-12-22 14:50:34,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:50:34,942 INFO L225 Difference]: With dead ends: 5054 [2021-12-22 14:50:34,943 INFO L226 Difference]: Without dead ends: 3584 [2021-12-22 14:50:34,950 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 [2021-12-22 14:50:34,952 INFO L933 BasicCegarLoop]: 2582 mSDtfsCounter, 4220 mSDsluCounter, 4934 mSDsCounter, 0 mSdLazyCounter, 3383 mSolverCounterSat, 2095 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4500 SdHoareTripleChecker+Valid, 7516 SdHoareTripleChecker+Invalid, 5481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2095 IncrementalHoareTripleChecker+Valid, 3383 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2021-12-22 14:50:34,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4500 Valid, 7516 Invalid, 5481 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2095 Valid, 3383 Invalid, 3 Unknown, 0 Unchecked, 18.5s Time] [2021-12-22 14:50:34,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3584 states. [2021-12-22 14:50:35,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3584 to 2903. [2021-12-22 14:50:35,072 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) [2021-12-22 14:50:35,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2903 states to 2903 states and 4308 transitions. [2021-12-22 14:50:35,089 INFO L78 Accepts]: Start accepts. Automaton has 2903 states and 4308 transitions. Word has length 224 [2021-12-22 14:50:35,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:50:35,092 INFO L470 AbstractCegarLoop]: Abstraction has 2903 states and 4308 transitions. [2021-12-22 14:50:35,092 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) [2021-12-22 14:50:35,092 INFO L276 IsEmpty]: Start isEmpty. Operand 2903 states and 4308 transitions. [2021-12-22 14:50:35,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-12-22 14:50:35,100 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:50:35,101 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] [2021-12-22 14:50:35,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 14:50:35,101 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:50:35,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:50:35,102 INFO L85 PathProgramCache]: Analyzing trace with hash -42409691, now seen corresponding path program 1 times [2021-12-22 14:50:35,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:50:35,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321245811] [2021-12-22 14:50:35,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:50:35,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:50:35,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:35,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:50:35,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:35,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:35,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:35,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:50:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:35,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 14:50:35,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:35,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:35,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:35,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:50:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:35,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 14:50:35,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:35,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:35,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:35,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:50:35,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:35,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 14:50:35,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:35,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:35,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:35,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:50:35,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:35,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-22 14:50:35,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:35,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:35,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:35,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:50:35,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:35,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 14:50:35,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:35,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:35,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:35,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 14:50:35,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:35,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:35,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:35,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-22 14:50:35,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:35,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:35,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:35,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-22 14:50:35,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:35,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:35,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-22 14:50:35,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:35,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:35,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:35,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-22 14:50:35,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:35,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:35,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:35,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-22 14:50:35,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:35,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:35,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:35,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-22 14:50:35,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:35,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:35,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:35,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-22 14:50:35,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:35,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:35,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:35,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-22 14:50:35,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:35,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:35,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:35,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-12-22 14:50:35,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:35,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:35,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:35,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-22 14:50:35,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:35,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:50:35,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:35,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-12-22 14:50:35,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:35,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-12-22 14:50:35,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:50:35,842 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2021-12-22 14:50:35,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:50:35,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321245811] [2021-12-22 14:50:35,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321245811] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:50:35,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:50:35,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:50:35,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678318261] [2021-12-22 14:50:35,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:50:35,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:50:35,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:50:35,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:50:35,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:50:35,847 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)