./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 0f8a17c6 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 0.2.1-dev-0f8a17c [2021-11-17 02:05:40,130 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-17 02:05:40,146 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-17 02:05:40,184 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-17 02:05:40,185 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-17 02:05:40,186 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-17 02:05:40,187 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-17 02:05:40,188 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-17 02:05:40,190 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-17 02:05:40,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-17 02:05:40,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-17 02:05:40,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-17 02:05:40,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-17 02:05:40,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-17 02:05:40,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-17 02:05:40,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-17 02:05:40,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-17 02:05:40,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-17 02:05:40,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-17 02:05:40,200 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-17 02:05:40,201 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-17 02:05:40,202 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-17 02:05:40,203 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-17 02:05:40,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-17 02:05:40,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-17 02:05:40,207 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-17 02:05:40,207 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-17 02:05:40,208 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-17 02:05:40,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-17 02:05:40,210 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-17 02:05:40,210 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-17 02:05:40,211 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-17 02:05:40,211 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-17 02:05:40,212 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-17 02:05:40,213 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-17 02:05:40,213 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-17 02:05:40,214 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-17 02:05:40,214 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-17 02:05:40,214 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-17 02:05:40,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-17 02:05:40,216 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-17 02:05:40,217 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-17 02:05:40,236 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-17 02:05:40,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-17 02:05:40,237 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-17 02:05:40,237 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-17 02:05:40,238 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-17 02:05:40,238 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-17 02:05:40,238 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-17 02:05:40,239 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-17 02:05:40,239 INFO L138 SettingsManager]: * Use SBE=true [2021-11-17 02:05:40,239 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-17 02:05:40,239 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-17 02:05:40,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-17 02:05:40,239 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-17 02:05:40,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-17 02:05:40,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-17 02:05:40,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-17 02:05:40,240 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-17 02:05:40,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-17 02:05:40,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-17 02:05:40,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-17 02:05:40,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-17 02:05:40,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 02:05:40,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-17 02:05:40,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-17 02:05:40,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-17 02:05:40,242 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-17 02:05:40,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-17 02:05:40,242 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-17 02:05:40,243 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-17 02:05:40,243 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-17 02:05:40,244 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-17 02:05:40,244 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec1c916a4e8241683d3d78dd3b5f266227914917d53067d3c7741f08a3fdd65b [2021-11-17 02:05:40,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-17 02:05:40,512 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-17 02:05:40,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-17 02:05:40,517 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-17 02:05:40,518 INFO L275 PluginConnector]: CDTParser initialized [2021-11-17 02:05:40,519 INFO L432 ainManager$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 [2021-11-17 02:05:40,595 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e33f8f1e/5c549b3ca87240d890ea00bdaf850df5/FLAG7c3e9fb06 [2021-11-17 02:05:41,318 INFO L306 CDTParser]: Found 1 translation units. [2021-11-17 02:05:41,319 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 [2021-11-17 02:05:41,368 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e33f8f1e/5c549b3ca87240d890ea00bdaf850df5/FLAG7c3e9fb06 [2021-11-17 02:05:41,591 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e33f8f1e/5c549b3ca87240d890ea00bdaf850df5 [2021-11-17 02:05:41,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-17 02:05:41,597 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-17 02:05:41,599 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-17 02:05:41,599 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-17 02:05:41,606 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-17 02:05:41,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 02:05:41" (1/1) ... [2021-11-17 02:05:41,607 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b3d2ea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:05:41, skipping insertion in model container [2021-11-17 02:05:41,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 02:05:41" (1/1) ... [2021-11-17 02:05:41,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-17 02:05:41,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-17 02:05:42,952 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] [2021-11-17 02:05:42,983 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 02:05:43,045 INFO L203 MainTranslator]: Completed pre-run [2021-11-17 02:05:43,367 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] [2021-11-17 02:05:43,380 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 02:05:43,436 INFO L208 MainTranslator]: Completed translation [2021-11-17 02:05:43,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:05:43 WrapperNode [2021-11-17 02:05:43,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-17 02:05:43,439 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-17 02:05:43,439 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-17 02:05:43,439 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-17 02:05:43,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:05:43" (1/1) ... [2021-11-17 02:05:43,513 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:05:43" (1/1) ... [2021-11-17 02:05:43,681 INFO L137 Inliner]: procedures = 187, calls = 2219, calls flagged for inlining = 71, calls inlined = 71, statements flattened = 4626 [2021-11-17 02:05:43,682 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-17 02:05:43,683 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-17 02:05:43,683 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-17 02:05:43,683 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-17 02:05:43,689 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:05:43" (1/1) ... [2021-11-17 02:05:43,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:05:43" (1/1) ... [2021-11-17 02:05:43,731 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:05:43" (1/1) ... [2021-11-17 02:05:43,731 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:05:43" (1/1) ... [2021-11-17 02:05:43,835 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:05:43" (1/1) ... [2021-11-17 02:05:43,882 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:05:43" (1/1) ... [2021-11-17 02:05:43,913 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:05:43" (1/1) ... [2021-11-17 02:05:43,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-17 02:05:43,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-17 02:05:43,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-17 02:05:43,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-17 02:05:43,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:05:43" (1/1) ... [2021-11-17 02:05:43,942 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 02:05:43,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 02:05:43,968 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) [2021-11-17 02:05:43,990 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 [2021-11-17 02:05:44,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-11-17 02:05:44,015 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-11-17 02:05:44,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-17 02:05:44,015 INFO L130 BoogieDeclarations]: Found specification of procedure ti_bulk_in_callback [2021-11-17 02:05:44,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_bulk_in_callback [2021-11-17 02:05:44,015 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-11-17 02:05:44,015 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-11-17 02:05:44,016 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-17 02:05:44,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-17 02:05:44,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-17 02:05:44,016 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-17 02:05:44,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-17 02:05:44,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-17 02:05:44,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-17 02:05:44,017 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-17 02:05:44,017 INFO L130 BoogieDeclarations]: Found specification of procedure tty_kref_put [2021-11-17 02:05:44,017 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_kref_put [2021-11-17 02:05:44,018 INFO L130 BoogieDeclarations]: Found specification of procedure ti_throttle [2021-11-17 02:05:44,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_throttle [2021-11-17 02:05:44,018 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_serial_deregister [2021-11-17 02:05:44,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_serial_deregister [2021-11-17 02:05:44,018 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_port_data [2021-11-17 02:05:44,019 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_port_data [2021-11-17 02:05:44,019 INFO L130 BoogieDeclarations]: Found specification of procedure ti_command_out_sync [2021-11-17 02:05:44,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_command_out_sync [2021-11-17 02:05:44,019 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-17 02:05:44,019 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-17 02:05:44,019 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-17 02:05:44,020 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-17 02:05:44,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-17 02:05:44,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-17 02:05:44,020 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-11-17 02:05:44,020 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-11-17 02:05:44,020 INFO L130 BoogieDeclarations]: Found specification of procedure ti_open [2021-11-17 02:05:44,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_open [2021-11-17 02:05:44,021 INFO L130 BoogieDeclarations]: Found specification of procedure ti_bulk_out_callback [2021-11-17 02:05:44,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_bulk_out_callback [2021-11-17 02:05:44,021 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2021-11-17 02:05:44,021 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2021-11-17 02:05:44,022 INFO L130 BoogieDeclarations]: Found specification of procedure ti_tiocmset [2021-11-17 02:05:44,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_tiocmset [2021-11-17 02:05:44,022 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-17 02:05:44,022 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-17 02:05:44,022 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2021-11-17 02:05:44,023 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2021-11-17 02:05:44,023 INFO L130 BoogieDeclarations]: Found specification of procedure ti_set_mcr [2021-11-17 02:05:44,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_set_mcr [2021-11-17 02:05:44,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-17 02:05:44,023 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-17 02:05:44,023 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-17 02:05:44,024 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-17 02:05:44,024 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-17 02:05:44,024 INFO L130 BoogieDeclarations]: Found specification of procedure ti_write_byte [2021-11-17 02:05:44,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_write_byte [2021-11-17 02:05:44,024 INFO L130 BoogieDeclarations]: Found specification of procedure ti_chars_in_buffer [2021-11-17 02:05:44,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_chars_in_buffer [2021-11-17 02:05:44,025 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-17 02:05:44,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-17 02:05:44,026 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-11-17 02:05:44,026 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-11-17 02:05:44,027 INFO L130 BoogieDeclarations]: Found specification of procedure ti_startup [2021-11-17 02:05:44,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_startup [2021-11-17 02:05:44,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-17 02:05:44,027 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-17 02:05:44,028 INFO L130 BoogieDeclarations]: Found specification of procedure ti_ioctl [2021-11-17 02:05:44,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_ioctl [2021-11-17 02:05:44,028 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_register [2021-11-17 02:05:44,028 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_register [2021-11-17 02:05:44,028 INFO L130 BoogieDeclarations]: Found specification of procedure ti_write_room [2021-11-17 02:05:44,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_write_room [2021-11-17 02:05:44,028 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-17 02:05:44,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-17 02:05:44,029 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-17 02:05:44,029 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-17 02:05:44,030 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_detach_2 [2021-11-17 02:05:44,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_detach_2 [2021-11-17 02:05:44,030 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_detach_1 [2021-11-17 02:05:44,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_detach_1 [2021-11-17 02:05:44,030 INFO L130 BoogieDeclarations]: Found specification of procedure ti_tiocmget [2021-11-17 02:05:44,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_tiocmget [2021-11-17 02:05:44,030 INFO L130 BoogieDeclarations]: Found specification of procedure msleep_interruptible [2021-11-17 02:05:44,031 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep_interruptible [2021-11-17 02:05:44,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-17 02:05:44,031 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_free [2021-11-17 02:05:44,031 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_free [2021-11-17 02:05:44,031 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2021-11-17 02:05:44,031 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2021-11-17 02:05:44,031 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-17 02:05:44,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-17 02:05:44,032 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-17 02:05:44,032 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-17 02:05:44,033 INFO L130 BoogieDeclarations]: Found specification of procedure ti_interrupt_callback [2021-11-17 02:05:44,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_interrupt_callback [2021-11-17 02:05:44,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-17 02:05:44,033 INFO L130 BoogieDeclarations]: Found specification of procedure tty_wakeup [2021-11-17 02:05:44,034 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_wakeup [2021-11-17 02:05:44,034 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-17 02:05:44,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-17 02:05:44,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-17 02:05:44,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-17 02:05:44,035 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-17 02:05:44,035 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_data [2021-11-17 02:05:44,035 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_data [2021-11-17 02:05:44,035 INFO L130 BoogieDeclarations]: Found specification of procedure ti_close [2021-11-17 02:05:44,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_close [2021-11-17 02:05:44,036 INFO L130 BoogieDeclarations]: Found specification of procedure ti_break [2021-11-17 02:05:44,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_break [2021-11-17 02:05:44,036 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-11-17 02:05:44,036 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-11-17 02:05:44,036 INFO L130 BoogieDeclarations]: Found specification of procedure __swab16s [2021-11-17 02:05:44,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab16s [2021-11-17 02:05:44,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-17 02:05:44,037 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-11-17 02:05:44,037 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-11-17 02:05:44,037 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-17 02:05:44,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-17 02:05:44,037 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2021-11-17 02:05:44,038 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2021-11-17 02:05:44,038 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-17 02:05:44,040 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-17 02:05:44,041 INFO L130 BoogieDeclarations]: Found specification of procedure ti_unthrottle [2021-11-17 02:05:44,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_unthrottle [2021-11-17 02:05:44,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-17 02:05:44,043 INFO L130 BoogieDeclarations]: Found specification of procedure ti_write [2021-11-17 02:05:44,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_write [2021-11-17 02:05:44,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-17 02:05:44,043 INFO L130 BoogieDeclarations]: Found specification of procedure ti_restart_read [2021-11-17 02:05:44,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_restart_read [2021-11-17 02:05:44,048 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-17 02:05:44,048 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-17 02:05:44,048 INFO L130 BoogieDeclarations]: Found specification of procedure ti_release [2021-11-17 02:05:44,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_release [2021-11-17 02:05:44,049 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-17 02:05:44,049 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-17 02:05:44,049 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-17 02:05:44,049 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-17 02:05:44,049 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-17 02:05:44,049 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-17 02:05:44,050 INFO L130 BoogieDeclarations]: Found specification of procedure request_firmware [2021-11-17 02:05:44,050 INFO L138 BoogieDeclarations]: Found implementation of procedure request_firmware [2021-11-17 02:05:44,050 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-17 02:05:44,050 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-17 02:05:44,050 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-17 02:05:44,050 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-17 02:05:44,050 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-17 02:05:44,050 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-17 02:05:44,051 INFO L130 BoogieDeclarations]: Found specification of procedure ti_send [2021-11-17 02:05:44,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_send [2021-11-17 02:05:44,051 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_get [2021-11-17 02:05:44,051 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_get [2021-11-17 02:05:44,051 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-17 02:05:44,051 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-17 02:05:44,051 INFO L130 BoogieDeclarations]: Found specification of procedure ti_drain [2021-11-17 02:05:44,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_drain [2021-11-17 02:05:44,052 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-17 02:05:44,052 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-17 02:05:44,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-17 02:05:44,052 INFO L130 BoogieDeclarations]: Found specification of procedure usb_clear_halt [2021-11-17 02:05:44,052 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_clear_halt [2021-11-17 02:05:44,052 INFO L130 BoogieDeclarations]: Found specification of procedure ti_set_termios [2021-11-17 02:05:44,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_set_termios [2021-11-17 02:05:44,053 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_data [2021-11-17 02:05:44,053 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_data [2021-11-17 02:05:44,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-17 02:05:44,053 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-17 02:05:44,053 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-17 02:05:44,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-17 02:05:44,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-17 02:05:44,655 INFO L236 CfgBuilder]: Building ICFG [2021-11-17 02:05:44,658 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-17 02:05:45,087 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-17 02:06:14,417 INFO L277 CfgBuilder]: Performing block encoding [2021-11-17 02:06:14,433 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-17 02:06:14,433 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-17 02:06:14,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 02:06:14 BoogieIcfgContainer [2021-11-17 02:06:14,437 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-17 02:06:14,439 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-17 02:06:14,439 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-17 02:06:14,448 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-17 02:06:14,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 02:05:41" (1/3) ... [2021-11-17 02:06:14,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@481814e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 02:06:14, skipping insertion in model container [2021-11-17 02:06:14,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:05:43" (2/3) ... [2021-11-17 02:06:14,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@481814e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 02:06:14, skipping insertion in model container [2021-11-17 02:06:14,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 02:06:14" (3/3) ... [2021-11-17 02:06:14,451 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 [2021-11-17 02:06:14,456 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-17 02:06:14,456 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-17 02:06:14,515 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-17 02:06:14,527 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-17 02:06:14,527 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-17 02:06:14,572 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) [2021-11-17 02:06:14,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-11-17 02:06:14,583 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:06:14,584 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] [2021-11-17 02:06:14,585 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:06:14,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:06:14,589 INFO L85 PathProgramCache]: Analyzing trace with hash -44726715, now seen corresponding path program 1 times [2021-11-17 02:06:14,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:06:14,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490734739] [2021-11-17 02:06:14,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:06:14,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:06:15,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:15,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:06:15,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:15,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:15,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:15,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:15,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:15,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:06:15,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:15,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:15,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:15,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:15,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:15,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:06:15,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:15,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:15,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:15,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:15,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:15,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 02:06:15,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:15,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:15,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:15,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:15,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:15,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 02:06:15,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:15,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:15,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:15,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:15,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:15,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-17 02:06:15,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:15,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:15,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:15,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-17 02:06:15,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:15,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:15,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:15,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-17 02:06:15,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:15,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:15,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:15,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-17 02:06:15,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:15,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:15,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-11-17 02:06:15,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:15,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:15,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:15,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 02:06:15,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:15,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:15,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:15,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-11-17 02:06:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:15,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:15,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:15,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-17 02:06:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:15,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:15,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:15,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-11-17 02:06:15,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:15,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:15,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:15,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-17 02:06:15,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:15,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:15,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:15,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-11-17 02:06:15,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:15,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:15,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:15,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-11-17 02:06:15,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:15,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:15,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:15,763 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 734 trivial. 0 not checked. [2021-11-17 02:06:15,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:06:15,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490734739] [2021-11-17 02:06:15,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490734739] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:06:15,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:06:15,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-17 02:06:15,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313552860] [2021-11-17 02:06:15,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:06:15,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-17 02:06:15,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:06:15,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-17 02:06:15,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-17 02:06:15,800 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) [2021-11-17 02:06:17,897 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 02:06:22,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:06:22,395 INFO L93 Difference]: Finished difference Result 3395 states and 5387 transitions. [2021-11-17 02:06:22,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-17 02:06:22,398 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 [2021-11-17 02:06:22,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:06:22,434 INFO L225 Difference]: With dead ends: 3395 [2021-11-17 02:06:22,434 INFO L226 Difference]: Without dead ends: 1853 [2021-11-17 02:06:22,449 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 [2021-11-17 02:06:22,451 INFO L933 BasicCegarLoop]: 2423 mSDtfsCounter, 1603 mSDsluCounter, 1181 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 1398 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1657 SdHoareTripleChecker+Valid, 3604 SdHoareTripleChecker+Invalid, 2374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1398 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-17 02:06:22,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1657 Valid, 3604 Invalid, 2374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1398 Valid, 975 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2021-11-17 02:06:22,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1853 states. [2021-11-17 02:06:22,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1853 to 1512. [2021-11-17 02:06:22,622 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) [2021-11-17 02:06:22,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 2236 transitions. [2021-11-17 02:06:22,637 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 2236 transitions. Word has length 224 [2021-11-17 02:06:22,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:06:22,639 INFO L470 AbstractCegarLoop]: Abstraction has 1512 states and 2236 transitions. [2021-11-17 02:06:22,639 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) [2021-11-17 02:06:22,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 2236 transitions. [2021-11-17 02:06:22,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-11-17 02:06:22,648 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:06:22,648 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] [2021-11-17 02:06:22,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-17 02:06:22,649 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:06:22,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:06:22,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1303521969, now seen corresponding path program 1 times [2021-11-17 02:06:22,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:06:22,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488242540] [2021-11-17 02:06:22,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:06:22,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:06:22,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:22,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:06:22,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:23,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:23,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:23,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:23,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:23,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:06:23,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:23,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:23,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:23,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:23,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:06:23,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:23,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:23,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:23,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:23,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:23,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 02:06:23,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:23,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:23,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:23,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:23,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:23,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 02:06:23,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:23,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:23,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:23,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:23,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:23,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-17 02:06:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:23,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:23,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:23,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-17 02:06:23,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:23,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:23,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:23,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-17 02:06:23,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:23,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:23,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:23,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-17 02:06:23,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:23,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:23,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:23,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-11-17 02:06:23,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:23,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:23,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 02:06:23,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:23,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:23,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:23,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-11-17 02:06:23,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:23,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:23,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:23,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-17 02:06:23,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:23,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:23,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:23,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-11-17 02:06:23,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:23,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:23,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:23,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-17 02:06:23,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:23,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:23,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:23,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-11-17 02:06:23,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:23,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:23,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:23,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-11-17 02:06:23,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:23,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:23,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:23,303 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 734 trivial. 0 not checked. [2021-11-17 02:06:23,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:06:23,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488242540] [2021-11-17 02:06:23,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488242540] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:06:23,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:06:23,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 02:06:23,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777316132] [2021-11-17 02:06:23,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:06:23,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 02:06:23,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:06:23,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 02:06:23,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-17 02:06:23,309 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) [2021-11-17 02:06:25,368 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 02:06:27,392 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 02:06:29,424 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 02:06:40,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:06:40,356 INFO L93 Difference]: Finished difference Result 5054 states and 7854 transitions. [2021-11-17 02:06:40,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 02:06:40,358 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 [2021-11-17 02:06:40,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:06:40,388 INFO L225 Difference]: With dead ends: 5054 [2021-11-17 02:06:40,389 INFO L226 Difference]: Without dead ends: 3584 [2021-11-17 02:06:40,399 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 [2021-11-17 02:06:40,400 INFO L933 BasicCegarLoop]: 2376 mSDtfsCounter, 4481 mSDsluCounter, 4914 mSDsCounter, 0 mSdLazyCounter, 3120 mSolverCounterSat, 2168 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4831 SdHoareTripleChecker+Valid, 7290 SdHoareTripleChecker+Invalid, 5291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2168 IncrementalHoareTripleChecker+Valid, 3120 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2021-11-17 02:06:40,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4831 Valid, 7290 Invalid, 5291 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2168 Valid, 3120 Invalid, 3 Unknown, 0 Unchecked, 16.6s Time] [2021-11-17 02:06:40,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3584 states. [2021-11-17 02:06:40,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3584 to 2903. [2021-11-17 02:06:40,547 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) [2021-11-17 02:06:40,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2903 states to 2903 states and 4308 transitions. [2021-11-17 02:06:40,563 INFO L78 Accepts]: Start accepts. Automaton has 2903 states and 4308 transitions. Word has length 224 [2021-11-17 02:06:40,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:06:40,566 INFO L470 AbstractCegarLoop]: Abstraction has 2903 states and 4308 transitions. [2021-11-17 02:06:40,567 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) [2021-11-17 02:06:40,567 INFO L276 IsEmpty]: Start isEmpty. Operand 2903 states and 4308 transitions. [2021-11-17 02:06:40,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-11-17 02:06:40,574 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:06:40,574 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] [2021-11-17 02:06:40,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-17 02:06:40,575 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:06:40,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:06:40,575 INFO L85 PathProgramCache]: Analyzing trace with hash -42409691, now seen corresponding path program 1 times [2021-11-17 02:06:40,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:06:40,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545333707] [2021-11-17 02:06:40,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:06:40,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:06:40,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:40,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:06:40,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:40,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:40,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:40,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:40,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:40,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:06:40,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:40,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:40,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:40,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:40,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:40,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:06:40,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:40,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:40,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:40,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:40,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:40,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 02:06:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:40,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:40,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:40,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:40,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:40,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 02:06:40,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:40,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:40,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:40,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:40,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:41,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-17 02:06:41,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:41,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:41,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:41,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-17 02:06:41,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:41,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:41,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:41,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-17 02:06:41,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:41,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:41,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:41,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-17 02:06:41,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:41,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:41,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:41,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-11-17 02:06:41,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:41,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:41,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:41,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 02:06:41,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:41,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:41,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:41,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-11-17 02:06:41,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:41,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:41,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:41,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-17 02:06:41,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:41,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:41,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:41,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-11-17 02:06:41,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:41,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:41,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:41,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-17 02:06:41,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:41,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:41,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:41,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-11-17 02:06:41,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:41,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:41,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:41,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-11-17 02:06:41,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:41,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:41,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:41,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-11-17 02:06:41,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:41,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-11-17 02:06:41,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:41,202 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2021-11-17 02:06:41,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:06:41,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545333707] [2021-11-17 02:06:41,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545333707] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:06:41,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:06:41,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 02:06:41,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165630591] [2021-11-17 02:06:41,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:06:41,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 02:06:41,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:06:41,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 02:06:41,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-17 02:06:41,208 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) [2021-11-17 02:06:43,257 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 02:06:50,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:06:50,354 INFO L93 Difference]: Finished difference Result 7111 states and 11266 transitions. [2021-11-17 02:06:50,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 02:06:50,357 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 [2021-11-17 02:06:50,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:06:50,413 INFO L225 Difference]: With dead ends: 7111 [2021-11-17 02:06:50,413 INFO L226 Difference]: Without dead ends: 7103 [2021-11-17 02:06:50,422 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 [2021-11-17 02:06:50,423 INFO L933 BasicCegarLoop]: 2607 mSDtfsCounter, 5655 mSDsluCounter, 3082 mSDsCounter, 0 mSdLazyCounter, 1881 mSolverCounterSat, 3152 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5941 SdHoareTripleChecker+Valid, 5689 SdHoareTripleChecker+Invalid, 5034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3152 IncrementalHoareTripleChecker+Valid, 1881 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2021-11-17 02:06:50,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5941 Valid, 5689 Invalid, 5034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3152 Valid, 1881 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2021-11-17 02:06:50,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7103 states. [2021-11-17 02:06:50,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7103 to 5748. [2021-11-17 02:06:50,669 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) [2021-11-17 02:06:50,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5748 states to 5748 states and 8539 transitions. [2021-11-17 02:06:50,692 INFO L78 Accepts]: Start accepts. Automaton has 5748 states and 8539 transitions. Word has length 244 [2021-11-17 02:06:50,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:06:50,694 INFO L470 AbstractCegarLoop]: Abstraction has 5748 states and 8539 transitions. [2021-11-17 02:06:50,694 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) [2021-11-17 02:06:50,694 INFO L276 IsEmpty]: Start isEmpty. Operand 5748 states and 8539 transitions. [2021-11-17 02:06:50,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2021-11-17 02:06:50,703 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:06:50,703 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] [2021-11-17 02:06:50,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-17 02:06:50,703 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:06:50,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:06:50,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1026238734, now seen corresponding path program 1 times [2021-11-17 02:06:50,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:06:50,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761138654] [2021-11-17 02:06:50,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:06:50,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:06:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:51,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:06:51,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:51,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:51,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:51,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:51,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:51,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:06:51,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:51,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:51,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:51,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:51,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:51,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:06:51,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:51,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:51,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:51,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:51,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:51,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 02:06:51,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:51,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:51,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:51,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:51,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:51,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 02:06:51,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:51,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:51,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:51,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:51,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:51,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-17 02:06:51,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:51,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:51,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:51,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-17 02:06:51,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:51,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:51,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:51,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-17 02:06:51,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:51,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:51,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:51,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-17 02:06:51,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:51,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:51,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:51,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-11-17 02:06:51,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:51,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:51,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:51,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 02:06:51,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:51,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:51,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:51,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-11-17 02:06:51,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:51,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:51,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:51,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-17 02:06:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:51,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:51,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:51,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-11-17 02:06:51,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:51,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:51,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:51,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-17 02:06:51,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:51,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:51,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:51,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-11-17 02:06:51,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:51,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:51,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:51,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-11-17 02:06:51,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:51,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:51,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:51,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-11-17 02:06:51,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:51,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-11-17 02:06:51,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:51,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-11-17 02:06:51,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:51,310 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2021-11-17 02:06:51,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:06:51,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761138654] [2021-11-17 02:06:51,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761138654] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:06:51,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:06:51,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-17 02:06:51,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836588993] [2021-11-17 02:06:51,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:06:51,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-17 02:06:51,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:06:51,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-17 02:06:51,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-17 02:06:51,315 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) [2021-11-17 02:06:53,368 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 02:06:55,385 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 02:06:57,432 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 02:07:11,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:07:11,186 INFO L93 Difference]: Finished difference Result 16856 states and 28118 transitions. [2021-11-17 02:07:11,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-17 02:07:11,186 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 [2021-11-17 02:07:11,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:07:11,294 INFO L225 Difference]: With dead ends: 16856 [2021-11-17 02:07:11,294 INFO L226 Difference]: Without dead ends: 11150 [2021-11-17 02:07:11,335 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 [2021-11-17 02:07:11,337 INFO L933 BasicCegarLoop]: 3496 mSDtfsCounter, 4744 mSDsluCounter, 15790 mSDsCounter, 0 mSdLazyCounter, 5700 mSolverCounterSat, 2236 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5023 SdHoareTripleChecker+Valid, 19286 SdHoareTripleChecker+Invalid, 7939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2236 IncrementalHoareTripleChecker+Valid, 5700 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.3s IncrementalHoareTripleChecker+Time [2021-11-17 02:07:11,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5023 Valid, 19286 Invalid, 7939 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2236 Valid, 5700 Invalid, 3 Unknown, 0 Unchecked, 19.3s Time] [2021-11-17 02:07:11,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11150 states. [2021-11-17 02:07:11,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11150 to 5752. [2021-11-17 02:07:11,711 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) [2021-11-17 02:07:11,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5752 states to 5752 states and 8543 transitions. [2021-11-17 02:07:11,734 INFO L78 Accepts]: Start accepts. Automaton has 5752 states and 8543 transitions. Word has length 254 [2021-11-17 02:07:11,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:07:11,735 INFO L470 AbstractCegarLoop]: Abstraction has 5752 states and 8543 transitions. [2021-11-17 02:07:11,736 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) [2021-11-17 02:07:11,736 INFO L276 IsEmpty]: Start isEmpty. Operand 5752 states and 8543 transitions. [2021-11-17 02:07:11,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2021-11-17 02:07:11,748 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:07:11,749 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] [2021-11-17 02:07:11,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-17 02:07:11,749 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:07:11,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:07:11,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1467233190, now seen corresponding path program 1 times [2021-11-17 02:07:11,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:07:11,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074640563] [2021-11-17 02:07:11,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:07:11,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:07:11,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:11,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:07:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:12,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:12,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:12,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:12,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:12,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:07:12,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:12,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:12,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:12,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:12,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:12,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:07:12,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:12,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:12,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:12,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:12,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 02:07:12,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:12,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:12,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:12,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:12,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:12,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 02:07:12,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:12,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:12,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:12,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:12,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:12,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-17 02:07:12,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:12,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:12,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:12,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-17 02:07:12,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:12,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:12,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:12,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-17 02:07:12,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:12,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:12,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:12,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-17 02:07:12,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:12,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:12,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:12,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-11-17 02:07:12,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:12,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:12,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 02:07:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:12,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:12,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:12,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-11-17 02:07:12,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:12,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:12,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:12,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-17 02:07:12,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:12,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:12,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:12,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-11-17 02:07:12,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:12,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:12,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-17 02:07:12,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:12,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:12,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:12,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-11-17 02:07:12,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:12,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:12,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:12,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-11-17 02:07:12,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:12,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:12,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-11-17 02:07:12,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:12,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-11-17 02:07:12,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:12,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-11-17 02:07:12,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:12,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-11-17 02:07:12,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:12,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-11-17 02:07:12,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:12,276 INFO L134 CoverageAnalysis]: Checked inductivity of 771 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 752 trivial. 0 not checked. [2021-11-17 02:07:12,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:07:12,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074640563] [2021-11-17 02:07:12,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074640563] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:07:12,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:07:12,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-17 02:07:12,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602436957] [2021-11-17 02:07:12,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:07:12,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 02:07:12,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:07:12,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 02:07:12,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-17 02:07:12,278 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) [2021-11-17 02:07:14,334 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 02:07:19,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:07:19,499 INFO L93 Difference]: Finished difference Result 11918 states and 18705 transitions. [2021-11-17 02:07:19,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-17 02:07:19,500 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 [2021-11-17 02:07:19,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:07:19,539 INFO L225 Difference]: With dead ends: 11918 [2021-11-17 02:07:19,540 INFO L226 Difference]: Without dead ends: 6208 [2021-11-17 02:07:19,565 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 [2021-11-17 02:07:19,566 INFO L933 BasicCegarLoop]: 2681 mSDtfsCounter, 4698 mSDsluCounter, 3596 mSDsCounter, 0 mSdLazyCounter, 1584 mSolverCounterSat, 2316 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4999 SdHoareTripleChecker+Valid, 6277 SdHoareTripleChecker+Invalid, 3901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2316 IncrementalHoareTripleChecker+Valid, 1584 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-11-17 02:07:19,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4999 Valid, 6277 Invalid, 3901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2316 Valid, 1584 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2021-11-17 02:07:19,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6208 states. [2021-11-17 02:07:19,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6208 to 4364. [2021-11-17 02:07:19,754 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) [2021-11-17 02:07:19,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4364 states to 4364 states and 6472 transitions. [2021-11-17 02:07:19,771 INFO L78 Accepts]: Start accepts. Automaton has 4364 states and 6472 transitions. Word has length 282 [2021-11-17 02:07:19,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:07:19,772 INFO L470 AbstractCegarLoop]: Abstraction has 4364 states and 6472 transitions. [2021-11-17 02:07:19,772 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) [2021-11-17 02:07:19,773 INFO L276 IsEmpty]: Start isEmpty. Operand 4364 states and 6472 transitions. [2021-11-17 02:07:19,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2021-11-17 02:07:19,790 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:07:19,791 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] [2021-11-17 02:07:19,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-17 02:07:19,791 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:07:19,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:07:19,792 INFO L85 PathProgramCache]: Analyzing trace with hash -221061418, now seen corresponding path program 1 times [2021-11-17 02:07:19,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:07:19,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307338762] [2021-11-17 02:07:19,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:07:19,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:07:19,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:07:20,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:20,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:20,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:07:20,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:20,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:07:20,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:20,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:20,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 02:07:20,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:20,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:20,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 02:07:20,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:20,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:20,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-17 02:07:20,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:20,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-17 02:07:20,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-17 02:07:20,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:20,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-17 02:07:20,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:20,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-11-17 02:07:20,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:20,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 02:07:20,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:20,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-11-17 02:07:20,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-17 02:07:20,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:20,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-11-17 02:07:20,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:20,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-17 02:07:20,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:20,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-11-17 02:07:20,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:20,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-11-17 02:07:20,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:20,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-11-17 02:07:20,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-11-17 02:07:20,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-11-17 02:07:20,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-11-17 02:07:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:20,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2021-11-17 02:07:20,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:20,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:20,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2021-11-17 02:07:20,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2021-11-17 02:07:20,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:20,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:20,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2021-11-17 02:07:20,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:20,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2021-11-17 02:07:20,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:20,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:20,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2021-11-17 02:07:20,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:20,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:20,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2021-11-17 02:07:20,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2021-11-17 02:07:20,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:20,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:20,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2021-11-17 02:07:20,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:20,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:20,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:20,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1698 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 1621 trivial. 0 not checked. [2021-11-17 02:07:20,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:07:20,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307338762] [2021-11-17 02:07:20,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307338762] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 02:07:20,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059218635] [2021-11-17 02:07:20,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:07:20,730 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 02:07:20,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 02:07:20,735 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) [2021-11-17 02:07:20,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-17 02:07:21,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:21,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 5134 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-17 02:07:21,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 02:07:24,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1698 backedges. 565 proven. 0 refuted. 0 times theorem prover too weak. 1133 trivial. 0 not checked. [2021-11-17 02:07:24,311 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 02:07:24,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059218635] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:07:24,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 02:07:24,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 12 [2021-11-17 02:07:24,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452091299] [2021-11-17 02:07:24,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:07:24,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 02:07:24,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:07:24,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 02:07:24,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-17 02:07:24,313 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) [2021-11-17 02:07:24,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:07:24,957 INFO L93 Difference]: Finished difference Result 7300 states and 10818 transitions. [2021-11-17 02:07:24,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-17 02:07:24,958 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 [2021-11-17 02:07:24,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:07:24,974 INFO L225 Difference]: With dead ends: 7300 [2021-11-17 02:07:24,974 INFO L226 Difference]: Without dead ends: 4366 [2021-11-17 02:07:24,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 533 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-17 02:07:24,988 INFO L933 BasicCegarLoop]: 2763 mSDtfsCounter, 2723 mSDsluCounter, 2272 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.4s IncrementalHoareTripleChecker+Time [2021-11-17 02:07:24,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2723 Valid, 5035 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-17 02:07:24,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4366 states. [2021-11-17 02:07:25,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4366 to 4364. [2021-11-17 02:07:25,133 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) [2021-11-17 02:07:25,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4364 states to 4364 states and 6470 transitions. [2021-11-17 02:07:25,148 INFO L78 Accepts]: Start accepts. Automaton has 4364 states and 6470 transitions. Word has length 404 [2021-11-17 02:07:25,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:07:25,149 INFO L470 AbstractCegarLoop]: Abstraction has 4364 states and 6470 transitions. [2021-11-17 02:07:25,149 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) [2021-11-17 02:07:25,149 INFO L276 IsEmpty]: Start isEmpty. Operand 4364 states and 6470 transitions. [2021-11-17 02:07:25,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2021-11-17 02:07:25,164 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:07:25,165 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] [2021-11-17 02:07:25,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-17 02:07:25,379 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 [2021-11-17 02:07:25,380 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:07:25,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:07:25,380 INFO L85 PathProgramCache]: Analyzing trace with hash 2107919124, now seen corresponding path program 1 times [2021-11-17 02:07:25,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:07:25,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439965] [2021-11-17 02:07:25,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:07:25,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:07:25,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:07:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:25,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:07:25,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:25,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:25,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:07:25,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:25,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 02:07:25,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:25,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:25,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 02:07:25,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:25,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-17 02:07:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:25,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-17 02:07:25,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:25,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-17 02:07:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:25,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-17 02:07:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:25,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-11-17 02:07:25,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:25,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 02:07:25,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-11-17 02:07:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:25,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-17 02:07:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:25,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-11-17 02:07:25,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:25,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-17 02:07:25,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-11-17 02:07:25,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:25,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-11-17 02:07:25,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:25,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-11-17 02:07:25,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-11-17 02:07:25,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-11-17 02:07:25,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-11-17 02:07:25,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:25,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:25,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2021-11-17 02:07:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:25,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:25,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2021-11-17 02:07:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2021-11-17 02:07:26,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:26,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:26,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2021-11-17 02:07:26,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:26,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:26,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2021-11-17 02:07:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:26,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:26,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2021-11-17 02:07:26,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:26,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:26,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2021-11-17 02:07:26,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2021-11-17 02:07:26,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:26,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2021-11-17 02:07:26,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:26,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:26,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1698 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 1621 trivial. 0 not checked. [2021-11-17 02:07:26,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:07:26,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439965] [2021-11-17 02:07:26,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439965] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 02:07:26,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261785328] [2021-11-17 02:07:26,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:07:26,123 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 02:07:26,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 02:07:26,124 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) [2021-11-17 02:07:26,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-17 02:07:27,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:27,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 5134 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-17 02:07:27,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 02:07:29,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1698 backedges. 565 proven. 0 refuted. 0 times theorem prover too weak. 1133 trivial. 0 not checked. [2021-11-17 02:07:29,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 02:07:29,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261785328] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:07:29,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 02:07:29,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 12 [2021-11-17 02:07:29,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288874101] [2021-11-17 02:07:29,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:07:29,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 02:07:29,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:07:29,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 02:07:29,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-17 02:07:29,104 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) [2021-11-17 02:07:29,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:07:29,592 INFO L93 Difference]: Finished difference Result 7300 states and 10814 transitions. [2021-11-17 02:07:29,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-17 02:07:29,595 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 [2021-11-17 02:07:29,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:07:29,615 INFO L225 Difference]: With dead ends: 7300 [2021-11-17 02:07:29,615 INFO L226 Difference]: Without dead ends: 4366 [2021-11-17 02:07:29,625 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 [2021-11-17 02:07:29,626 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, 0.4s IncrementalHoareTripleChecker+Time [2021-11-17 02:07:29,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2730 Valid, 5028 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-17 02:07:29,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4366 states. [2021-11-17 02:07:29,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4366 to 4364. [2021-11-17 02:07:29,788 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) [2021-11-17 02:07:29,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4364 states to 4364 states and 6468 transitions. [2021-11-17 02:07:29,804 INFO L78 Accepts]: Start accepts. Automaton has 4364 states and 6468 transitions. Word has length 404 [2021-11-17 02:07:29,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:07:29,804 INFO L470 AbstractCegarLoop]: Abstraction has 4364 states and 6468 transitions. [2021-11-17 02:07:29,805 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) [2021-11-17 02:07:29,805 INFO L276 IsEmpty]: Start isEmpty. Operand 4364 states and 6468 transitions. [2021-11-17 02:07:29,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2021-11-17 02:07:29,892 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:07:29,893 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] [2021-11-17 02:07:29,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-17 02:07:30,093 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 [2021-11-17 02:07:30,093 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:07:30,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:07:30,094 INFO L85 PathProgramCache]: Analyzing trace with hash -429421034, now seen corresponding path program 1 times [2021-11-17 02:07:30,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:07:30,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721008042] [2021-11-17 02:07:30,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:07:30,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:07:30,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:07:30,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:30,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:30,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:07:30,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:30,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:30,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:07:30,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:30,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 02:07:30,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:30,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:30,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 02:07:30,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:30,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:30,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-17 02:07:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:30,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-17 02:07:30,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-17 02:07:30,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-17 02:07:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:30,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-11-17 02:07:30,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:30,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 02:07:30,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:30,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-11-17 02:07:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:30,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-17 02:07:30,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:30,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-11-17 02:07:30,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:30,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-17 02:07:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:30,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-11-17 02:07:30,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:30,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-11-17 02:07:30,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:30,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-11-17 02:07:30,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-11-17 02:07:30,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-11-17 02:07:30,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-11-17 02:07:30,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:30,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:30,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2021-11-17 02:07:30,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:30,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:30,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2021-11-17 02:07:30,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2021-11-17 02:07:30,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:30,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:30,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2021-11-17 02:07:30,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:30,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:30,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2021-11-17 02:07:30,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:30,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:30,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2021-11-17 02:07:30,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:30,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:30,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2021-11-17 02:07:30,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2021-11-17 02:07:30,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:30,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:30,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2021-11-17 02:07:30,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:30,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:30,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:30,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1698 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 1621 trivial. 0 not checked. [2021-11-17 02:07:30,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:07:30,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721008042] [2021-11-17 02:07:30,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721008042] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 02:07:30,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101670132] [2021-11-17 02:07:30,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:07:30,846 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 02:07:30,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 02:07:30,847 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) [2021-11-17 02:07:30,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-17 02:07:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:31,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 5134 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-17 02:07:31,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 02:07:32,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1698 backedges. 659 proven. 0 refuted. 0 times theorem prover too weak. 1039 trivial. 0 not checked. [2021-11-17 02:07:32,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 02:07:32,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101670132] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:07:32,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 02:07:32,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2021-11-17 02:07:32,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285227206] [2021-11-17 02:07:32,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:07:32,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 02:07:32,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:07:32,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 02:07:32,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-17 02:07:32,763 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) [2021-11-17 02:07:33,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:07:33,153 INFO L93 Difference]: Finished difference Result 8726 states and 12979 transitions. [2021-11-17 02:07:33,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-17 02:07:33,154 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 [2021-11-17 02:07:33,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:07:33,174 INFO L225 Difference]: With dead ends: 8726 [2021-11-17 02:07:33,175 INFO L226 Difference]: Without dead ends: 4373 [2021-11-17 02:07:33,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 532 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-17 02:07:33,189 INFO L933 BasicCegarLoop]: 2214 mSDtfsCounter, 6 mSDsluCounter, 8823 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2021-11-17 02:07:33,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 11037 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-17 02:07:33,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4373 states. [2021-11-17 02:07:33,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4373 to 4373. [2021-11-17 02:07:33,349 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) [2021-11-17 02:07:33,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4373 states to 4373 states and 6480 transitions. [2021-11-17 02:07:33,366 INFO L78 Accepts]: Start accepts. Automaton has 4373 states and 6480 transitions. Word has length 404 [2021-11-17 02:07:33,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:07:33,368 INFO L470 AbstractCegarLoop]: Abstraction has 4373 states and 6480 transitions. [2021-11-17 02:07:33,368 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) [2021-11-17 02:07:33,368 INFO L276 IsEmpty]: Start isEmpty. Operand 4373 states and 6480 transitions. [2021-11-17 02:07:33,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2021-11-17 02:07:33,381 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:07:33,381 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] [2021-11-17 02:07:33,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-17 02:07:33,607 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 [2021-11-17 02:07:33,608 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:07:33,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:07:33,608 INFO L85 PathProgramCache]: Analyzing trace with hash -564552854, now seen corresponding path program 1 times [2021-11-17 02:07:33,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:07:33,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128483087] [2021-11-17 02:07:33,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:07:33,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:07:33,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:33,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:07:33,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:33,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:33,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:33,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:33,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:33,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:07:33,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:33,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:33,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:33,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:33,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:33,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:07:33,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:33,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:33,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:33,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:33,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:33,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 02:07:33,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:33,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:33,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:33,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:33,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 02:07:33,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:33,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:33,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:34,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-17 02:07:34,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-17 02:07:34,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:34,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-17 02:07:34,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:34,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-17 02:07:34,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:34,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 02:07:34,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:34,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-17 02:07:34,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:34,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-11-17 02:07:34,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:34,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-11-17 02:07:34,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:34,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-11-17 02:07:34,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:34,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-11-17 02:07:34,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2021-11-17 02:07:34,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:34,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-11-17 02:07:34,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:34,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-11-17 02:07:34,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-11-17 02:07:34,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-11-17 02:07:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2021-11-17 02:07:34,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:34,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:34,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2021-11-17 02:07:34,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:34,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:34,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2021-11-17 02:07:34,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-11-17 02:07:34,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:34,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:34,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-11-17 02:07:34,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:34,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2021-11-17 02:07:34,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:34,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:34,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2021-11-17 02:07:34,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:34,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2021-11-17 02:07:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2021-11-17 02:07:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:34,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:34,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2021-11-17 02:07:34,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:34,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:34,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:34,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1908 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 1797 trivial. 0 not checked. [2021-11-17 02:07:34,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:07:34,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128483087] [2021-11-17 02:07:34,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128483087] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 02:07:34,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180858120] [2021-11-17 02:07:34,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:07:34,596 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 02:07:34,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 02:07:34,597 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) [2021-11-17 02:07:34,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-17 02:07:38,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:38,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 5206 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-17 02:07:38,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 02:07:39,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1908 backedges. 692 proven. 1 refuted. 0 times theorem prover too weak. 1215 trivial. 0 not checked. [2021-11-17 02:07:39,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 02:07:40,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1908 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 1797 trivial. 0 not checked. [2021-11-17 02:07:40,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180858120] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-17 02:07:40,669 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-17 02:07:40,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2021-11-17 02:07:40,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014605329] [2021-11-17 02:07:40,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-17 02:07:40,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-17 02:07:40,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:07:40,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-17 02:07:40,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-11-17 02:07:40,671 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) [2021-11-17 02:07:42,712 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 02:07:44,759 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 02:07:56,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:07:56,244 INFO L93 Difference]: Finished difference Result 10342 states and 16100 transitions. [2021-11-17 02:07:56,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-17 02:07:56,245 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 [2021-11-17 02:07:56,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:07:56,279 INFO L225 Difference]: With dead ends: 10342 [2021-11-17 02:07:56,279 INFO L226 Difference]: Without dead ends: 5980 [2021-11-17 02:07:56,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 983 GetRequests, 955 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2021-11-17 02:07:56,297 INFO L933 BasicCegarLoop]: 2429 mSDtfsCounter, 2486 mSDsluCounter, 17528 mSDsCounter, 0 mSdLazyCounter, 5433 mSolverCounterSat, 2011 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2593 SdHoareTripleChecker+Valid, 19957 SdHoareTripleChecker+Invalid, 7446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2011 IncrementalHoareTripleChecker+Valid, 5433 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2021-11-17 02:07:56,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2593 Valid, 19957 Invalid, 7446 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2011 Valid, 5433 Invalid, 2 Unknown, 0 Unchecked, 14.8s Time] [2021-11-17 02:07:56,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5980 states. [2021-11-17 02:07:56,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5980 to 4381. [2021-11-17 02:07:56,594 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) [2021-11-17 02:07:56,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4381 states to 4381 states and 6491 transitions. [2021-11-17 02:07:56,611 INFO L78 Accepts]: Start accepts. Automaton has 4381 states and 6491 transitions. Word has length 416 [2021-11-17 02:07:56,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:07:56,612 INFO L470 AbstractCegarLoop]: Abstraction has 4381 states and 6491 transitions. [2021-11-17 02:07:56,612 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) [2021-11-17 02:07:56,613 INFO L276 IsEmpty]: Start isEmpty. Operand 4381 states and 6491 transitions. [2021-11-17 02:07:56,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2021-11-17 02:07:56,626 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:07:56,627 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] [2021-11-17 02:07:56,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-17 02:07:56,843 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 [2021-11-17 02:07:56,844 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:07:56,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:07:56,844 INFO L85 PathProgramCache]: Analyzing trace with hash -137758570, now seen corresponding path program 2 times [2021-11-17 02:07:56,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:07:56,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963310236] [2021-11-17 02:07:56,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:07:56,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:07:57,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:07:57,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:57,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:57,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:07:57,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:57,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:57,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:07:57,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:57,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:57,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 02:07:57,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:57,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:57,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 02:07:57,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:57,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:57,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-17 02:07:57,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:57,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-17 02:07:57,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:57,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 02:07:57,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:57,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-17 02:07:57,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:57,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-11-17 02:07:57,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:57,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-11-17 02:07:57,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:57,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-11-17 02:07:57,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:57,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-11-17 02:07:57,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:57,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-11-17 02:07:57,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:57,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-11-17 02:07:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:57,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-11-17 02:07:57,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:57,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-11-17 02:07:57,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:57,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-11-17 02:07:57,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-11-17 02:07:57,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2021-11-17 02:07:57,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2021-11-17 02:07:57,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:57,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:57,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2021-11-17 02:07:57,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:57,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:57,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2021-11-17 02:07:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2021-11-17 02:07:57,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:57,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2021-11-17 02:07:57,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:57,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:57,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2021-11-17 02:07:57,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:57,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:57,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2021-11-17 02:07:57,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:57,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:57,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2021-11-17 02:07:57,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2021-11-17 02:07:57,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:57,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:57,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2021-11-17 02:07:57,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:57,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:57,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:57,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2262 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 2094 trivial. 0 not checked. [2021-11-17 02:07:57,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:07:57,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963310236] [2021-11-17 02:07:57,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963310236] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 02:07:57,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47639661] [2021-11-17 02:07:57,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-17 02:07:57,879 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 02:07:57,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 02:07:57,880 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) [2021-11-17 02:07:57,881 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