./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.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 bf654a6a1eca45ac77a809162568fb8018795c05fa9eb6946186269d2e2c9c25 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 21:45:01,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 21:45:01,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 21:45:01,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 21:45:01,127 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 21:45:01,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 21:45:01,131 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 21:45:01,133 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 21:45:01,134 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 21:45:01,135 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 21:45:01,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 21:45:01,136 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 21:45:01,137 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 21:45:01,138 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 21:45:01,139 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 21:45:01,140 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 21:45:01,140 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 21:45:01,144 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 21:45:01,145 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 21:45:01,148 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 21:45:01,150 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 21:45:01,151 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 21:45:01,152 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 21:45:01,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 21:45:01,155 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 21:45:01,155 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 21:45:01,155 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 21:45:01,156 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 21:45:01,157 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 21:45:01,157 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 21:45:01,158 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 21:45:01,158 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 21:45:01,159 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 21:45:01,160 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 21:45:01,160 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 21:45:01,161 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 21:45:01,161 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 21:45:01,162 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 21:45:01,162 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 21:45:01,163 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 21:45:01,163 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 21:45:01,164 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 21:45:01,194 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 21:45:01,194 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 21:45:01,194 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 21:45:01,195 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 21:45:01,196 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 21:45:01,196 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 21:45:01,196 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 21:45:01,196 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 21:45:01,197 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 21:45:01,197 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 21:45:01,197 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 21:45:01,197 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 21:45:01,198 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 21:45:01,198 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 21:45:01,198 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 21:45:01,198 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 21:45:01,199 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 21:45:01,199 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 21:45:01,199 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 21:45:01,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 21:45:01,200 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 21:45:01,200 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 21:45:01,200 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 21:45:01,200 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 21:45:01,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 21:45:01,201 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 21:45:01,201 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 21:45:01,201 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 21:45:01,202 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 21:45:01,202 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf654a6a1eca45ac77a809162568fb8018795c05fa9eb6946186269d2e2c9c25 [2021-11-02 21:45:01,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 21:45:01,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 21:45:01,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 21:45:01,453 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 21:45:01,455 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 21:45:01,456 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-11-02 21:45:01,513 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e598afd03/2cdb0410584049c4992e36c901387a93/FLAG5fe31d9bc [2021-11-02 21:45:02,193 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 21:45:02,194 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-11-02 21:45:02,239 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e598afd03/2cdb0410584049c4992e36c901387a93/FLAG5fe31d9bc [2021-11-02 21:45:02,540 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e598afd03/2cdb0410584049c4992e36c901387a93 [2021-11-02 21:45:02,542 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 21:45:02,543 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 21:45:02,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 21:45:02,544 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 21:45:02,547 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 21:45:02,547 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:45:02" (1/1) ... [2021-11-02 21:45:02,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d89f999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:45:02, skipping insertion in model container [2021-11-02 21:45:02,548 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:45:02" (1/1) ... [2021-11-02 21:45:02,554 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 21:45:02,686 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 21:45:04,481 WARN L228 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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[323188,323201] [2021-11-02 21:45:04,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 21:45:04,682 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 21:45:05,087 WARN L228 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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[323188,323201] [2021-11-02 21:45:05,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 21:45:05,297 INFO L208 MainTranslator]: Completed translation [2021-11-02 21:45:05,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:45:05 WrapperNode [2021-11-02 21:45:05,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 21:45:05,300 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 21:45:05,300 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 21:45:05,300 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 21:45:05,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:45:05" (1/1) ... [2021-11-02 21:45:05,442 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:45:05" (1/1) ... [2021-11-02 21:45:05,884 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 21:45:05,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 21:45:05,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 21:45:05,885 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 21:45:05,892 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:45:05" (1/1) ... [2021-11-02 21:45:05,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:45:05" (1/1) ... [2021-11-02 21:45:05,956 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:45:05" (1/1) ... [2021-11-02 21:45:05,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:45:05" (1/1) ... [2021-11-02 21:45:06,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:45:05" (1/1) ... [2021-11-02 21:45:06,288 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:45:05" (1/1) ... [2021-11-02 21:45:06,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:45:05" (1/1) ... [2021-11-02 21:45:06,499 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 21:45:06,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 21:45:06,501 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 21:45:06,501 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 21:45:06,502 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:45:05" (1/1) ... [2021-11-02 21:45:06,518 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 21:45:06,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 21:45:06,561 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) [2021-11-02 21:45:06,608 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 [2021-11-02 21:45:06,659 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_dtr_rts [2021-11-02 21:45:06,660 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_dtr_rts [2021-11-02 21:45:06,660 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_remove [2021-11-02 21:45:06,661 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_remove [2021-11-02 21:45:06,661 INFO L130 BoogieDeclarations]: Found specification of procedure serial_chars_in_buffer [2021-11-02 21:45:06,661 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_chars_in_buffer [2021-11-02 21:45:06,661 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_activate [2021-11-02 21:45:06,661 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_activate [2021-11-02 21:45:06,661 INFO L130 BoogieDeclarations]: Found specification of procedure serial_ioctl [2021-11-02 21:45:06,661 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_ioctl [2021-11-02 21:45:06,662 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write_room [2021-11-02 21:45:06,662 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write_room [2021-11-02 21:45:06,662 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-02 21:45:06,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-02 21:45:06,662 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_probe [2021-11-02 21:45:06,662 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_probe [2021-11-02 21:45:06,662 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-02 21:45:06,663 INFO L130 BoogieDeclarations]: Found specification of procedure serial_get_icount [2021-11-02 21:45:06,663 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_get_icount [2021-11-02 21:45:06,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 21:45:06,663 INFO L130 BoogieDeclarations]: Found specification of procedure serial_cleanup [2021-11-02 21:45:06,663 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_cleanup [2021-11-02 21:45:06,663 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_carrier_raised [2021-11-02 21:45:06,663 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_carrier_raised [2021-11-02 21:45:06,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 21:45:06,664 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2021-11-02 21:45:06,664 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2021-11-02 21:45:06,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 21:45:06,664 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_reset_resume [2021-11-02 21:45:06,664 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_reset_resume [2021-11-02 21:45:06,664 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_read_bulk_callback [2021-11-02 21:45:06,665 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_read_bulk_callback [2021-11-02 21:45:06,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 21:45:06,665 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_shutdown [2021-11-02 21:45:06,665 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_shutdown [2021-11-02 21:45:06,665 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2021-11-02 21:45:06,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2021-11-02 21:45:06,665 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-02 21:45:06,666 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-02 21:45:06,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 21:45:06,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 21:45:06,666 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-02 21:45:06,666 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-02 21:45:06,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-02 21:45:06,666 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-02 21:45:06,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-02 21:45:06,667 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_put [2021-11-02 21:45:06,667 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_put [2021-11-02 21:45:06,667 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_serial [2021-11-02 21:45:06,667 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_serial [2021-11-02 21:45:06,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 21:45:06,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 21:45:06,668 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_start [2021-11-02 21:45:06,668 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_start [2021-11-02 21:45:06,668 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-11-02 21:45:06,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-11-02 21:45:06,669 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-11-02 21:45:06,669 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-11-02 21:45:06,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 21:45:06,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 21:45:06,670 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write [2021-11-02 21:45:06,670 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write [2021-11-02 21:45:06,671 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2021-11-02 21:45:06,671 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2021-11-02 21:45:06,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 21:45:06,671 INFO L130 BoogieDeclarations]: Found specification of procedure serial_unthrottle [2021-11-02 21:45:06,672 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_unthrottle [2021-11-02 21:45:06,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 21:45:06,672 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-02 21:45:06,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-02 21:45:06,672 INFO L130 BoogieDeclarations]: Found specification of procedure serial_throttle [2021-11-02 21:45:06,672 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_throttle [2021-11-02 21:45:06,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 21:45:06,673 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-02 21:45:06,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-02 21:45:06,673 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmget [2021-11-02 21:45:06,674 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmget [2021-11-02 21:45:06,674 INFO L130 BoogieDeclarations]: Found specification of procedure serial_wait_until_sent [2021-11-02 21:45:06,674 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_wait_until_sent [2021-11-02 21:45:06,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 21:45:06,674 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2021-11-02 21:45:06,675 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2021-11-02 21:45:06,675 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2021-11-02 21:45:06,675 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2021-11-02 21:45:06,675 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmset [2021-11-02 21:45:06,675 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmset [2021-11-02 21:45:06,675 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write [2021-11-02 21:45:06,675 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write [2021-11-02 21:45:06,676 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-02 21:45:06,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-02 21:45:06,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 21:45:31,010 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 21:45:31,011 INFO L299 CfgBuilder]: Removed 2331 assume(true) statements. [2021-11-02 21:45:31,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:45:31 BoogieIcfgContainer [2021-11-02 21:45:31,016 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 21:45:31,020 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 21:45:31,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 21:45:31,024 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 21:45:31,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:45:02" (1/3) ... [2021-11-02 21:45:31,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f0e7c36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:45:31, skipping insertion in model container [2021-11-02 21:45:31,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:45:05" (2/3) ... [2021-11-02 21:45:31,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f0e7c36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:45:31, skipping insertion in model container [2021-11-02 21:45:31,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:45:31" (3/3) ... [2021-11-02 21:45:31,028 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-11-02 21:45:31,034 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 21:45:31,034 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 53 error locations. [2021-11-02 21:45:31,095 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 21:45:31,102 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 [2021-11-02 21:45:31,102 INFO L340 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2021-11-02 21:45:31,160 INFO L276 IsEmpty]: Start isEmpty. Operand has 2747 states, 2544 states have (on average 1.39937106918239) internal successors, (3560), 2606 states have internal predecessors, (3560), 112 states have call successors, (112), 37 states have call predecessors, (112), 37 states have return successors, (112), 105 states have call predecessors, (112), 112 states have call successors, (112) [2021-11-02 21:45:31,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-02 21:45:31,173 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:45:31,174 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:45:31,175 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting serial_port_activateErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-02 21:45:31,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:45:31,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1101246796, now seen corresponding path program 1 times [2021-11-02 21:45:31,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:45:31,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421120442] [2021-11-02 21:45:31,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:45:31,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:45:31,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:45:32,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 21:45:32,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:45:32,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421120442] [2021-11-02 21:45:32,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421120442] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:45:32,136 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:45:32,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 21:45:32,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750841556] [2021-11-02 21:45:32,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 21:45:32,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:45:32,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 21:45:32,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 21:45:32,185 INFO L87 Difference]: Start difference. First operand has 2747 states, 2544 states have (on average 1.39937106918239) internal successors, (3560), 2606 states have internal predecessors, (3560), 112 states have call successors, (112), 37 states have call predecessors, (112), 37 states have return successors, (112), 105 states have call predecessors, (112), 112 states have call successors, (112) Second operand has 2 states, 2 states have (on average 47.0) internal successors, (94), 2 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:45:34,351 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:45:46,977 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:46:05,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:46:05,683 INFO L93 Difference]: Finished difference Result 5490 states and 7662 transitions. [2021-11-02 21:46:05,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 21:46:05,685 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 47.0) internal successors, (94), 2 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-02 21:46:05,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:46:05,709 INFO L225 Difference]: With dead ends: 5490 [2021-11-02 21:46:05,709 INFO L226 Difference]: Without dead ends: 2732 [2021-11-02 21:46:05,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 21:46:05,730 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3424 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30911.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 3426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 43.64ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3424 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32868.53ms IncrementalHoareTripleChecker+Time [2021-11-02 21:46:05,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 235 Invalid, 3426 Unknown, 0 Unchecked, 43.64ms Time], IncrementalHoareTripleChecker [0 Valid, 3424 Invalid, 2 Unknown, 0 Unchecked, 32868.53ms Time] [2021-11-02 21:46:05,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2021-11-02 21:46:05,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 2732. [2021-11-02 21:46:05,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2732 states, 2530 states have (on average 1.3482213438735178) internal successors, (3411), 2591 states have internal predecessors, (3411), 112 states have call successors, (112), 37 states have call predecessors, (112), 37 states have return successors, (112), 105 states have call predecessors, (112), 112 states have call successors, (112) [2021-11-02 21:46:05,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2732 states to 2732 states and 3635 transitions. [2021-11-02 21:46:05,886 INFO L78 Accepts]: Start accepts. Automaton has 2732 states and 3635 transitions. Word has length 95 [2021-11-02 21:46:05,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:46:05,887 INFO L470 AbstractCegarLoop]: Abstraction has 2732 states and 3635 transitions. [2021-11-02 21:46:05,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 47.0) internal successors, (94), 2 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:46:05,888 INFO L276 IsEmpty]: Start isEmpty. Operand 2732 states and 3635 transitions. [2021-11-02 21:46:05,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-02 21:46:05,894 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:46:05,895 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:46:05,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 21:46:05,898 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting serial_port_activateErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-02 21:46:05,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:46:05,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1092627974, now seen corresponding path program 1 times [2021-11-02 21:46:05,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:46:05,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969166773] [2021-11-02 21:46:05,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:46:05,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:46:06,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:46:06,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 21:46:06,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:46:06,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969166773] [2021-11-02 21:46:06,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969166773] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:46:06,499 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:46:06,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:46:06,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049005930] [2021-11-02 21:46:06,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:46:06,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:46:06,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:46:06,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:46:06,501 INFO L87 Difference]: Start difference. First operand 2732 states and 3635 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:46:08,647 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:46:30,916 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:47:08,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:47:08,026 INFO L93 Difference]: Finished difference Result 5420 states and 7229 transitions. [2021-11-02 21:47:08,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:47:08,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-02 21:47:08,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:47:08,041 INFO L225 Difference]: With dead ends: 5420 [2021-11-02 21:47:08,042 INFO L226 Difference]: Without dead ends: 2736 [2021-11-02 21:47:08,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.20ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:47:08,054 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 0 mSDsluCounter, 3594 mSDsCounter, 0 mSdLazyCounter, 6814 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58219.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 6822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 76.14ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 6814 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60969.83ms IncrementalHoareTripleChecker+Time [2021-11-02 21:47:08,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 448 Invalid, 6822 Unknown, 0 Unchecked, 76.14ms Time], IncrementalHoareTripleChecker [6 Valid, 6814 Invalid, 2 Unknown, 0 Unchecked, 60969.83ms Time] [2021-11-02 21:47:08,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2736 states. [2021-11-02 21:47:08,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2736 to 2736. [2021-11-02 21:47:08,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2736 states, 2534 states have (on average 1.3476716653512233) internal successors, (3415), 2595 states have internal predecessors, (3415), 112 states have call successors, (112), 37 states have call predecessors, (112), 37 states have return successors, (112), 105 states have call predecessors, (112), 112 states have call successors, (112) [2021-11-02 21:47:08,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2736 states to 2736 states and 3639 transitions. [2021-11-02 21:47:08,118 INFO L78 Accepts]: Start accepts. Automaton has 2736 states and 3639 transitions. Word has length 95 [2021-11-02 21:47:08,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:47:08,119 INFO L470 AbstractCegarLoop]: Abstraction has 2736 states and 3639 transitions. [2021-11-02 21:47:08,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:47:08,119 INFO L276 IsEmpty]: Start isEmpty. Operand 2736 states and 3639 transitions. [2021-11-02 21:47:08,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-02 21:47:08,120 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:47:08,120 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:47:08,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 21:47:08,121 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting serial_port_activateErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-02 21:47:08,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:47:08,122 INFO L85 PathProgramCache]: Analyzing trace with hash -605767352, now seen corresponding path program 1 times [2021-11-02 21:47:08,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:47:08,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267164152] [2021-11-02 21:47:08,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:47:08,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:47:08,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:47:08,713 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 21:47:08,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:47:08,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267164152] [2021-11-02 21:47:08,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267164152] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:47:08,714 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:47:08,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:47:08,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485968052] [2021-11-02 21:47:08,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:47:08,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:47:08,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:47:08,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:47:08,715 INFO L87 Difference]: Start difference. First operand 2736 states and 3639 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:47:10,850 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:47:32,919 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:48:09,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:48:09,544 INFO L93 Difference]: Finished difference Result 5429 states and 7242 transitions. [2021-11-02 21:48:09,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:48:09,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-02 21:48:09,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:48:09,559 INFO L225 Difference]: With dead ends: 5429 [2021-11-02 21:48:09,559 INFO L226 Difference]: Without dead ends: 2745 [2021-11-02 21:48:09,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.81ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:48:09,572 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 0 mSDsluCounter, 3594 mSDsCounter, 0 mSdLazyCounter, 6809 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57582.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 6827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 51.28ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 6809 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60399.04ms IncrementalHoareTripleChecker+Time [2021-11-02 21:48:09,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 448 Invalid, 6827 Unknown, 0 Unchecked, 51.28ms Time], IncrementalHoareTripleChecker [16 Valid, 6809 Invalid, 2 Unknown, 0 Unchecked, 60399.04ms Time] [2021-11-02 21:48:09,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2745 states. [2021-11-02 21:48:09,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2745 to 2745. [2021-11-02 21:48:09,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2745 states, 2543 states have (on average 1.3464412111679118) internal successors, (3424), 2604 states have internal predecessors, (3424), 112 states have call successors, (112), 37 states have call predecessors, (112), 37 states have return successors, (112), 105 states have call predecessors, (112), 112 states have call successors, (112) [2021-11-02 21:48:09,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2745 states to 2745 states and 3648 transitions. [2021-11-02 21:48:09,641 INFO L78 Accepts]: Start accepts. Automaton has 2745 states and 3648 transitions. Word has length 98 [2021-11-02 21:48:09,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:48:09,641 INFO L470 AbstractCegarLoop]: Abstraction has 2745 states and 3648 transitions. [2021-11-02 21:48:09,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:48:09,642 INFO L276 IsEmpty]: Start isEmpty. Operand 2745 states and 3648 transitions. [2021-11-02 21:48:09,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-02 21:48:09,643 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:48:09,643 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:48:09,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 21:48:09,644 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting serial_port_activateErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-02 21:48:09,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:48:09,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1881618578, now seen corresponding path program 1 times [2021-11-02 21:48:09,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:48:09,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026977486] [2021-11-02 21:48:09,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:48:09,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:48:09,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:48:10,168 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 21:48:10,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:48:10,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026977486] [2021-11-02 21:48:10,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026977486] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:48:10,169 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:48:10,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:48:10,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257199021] [2021-11-02 21:48:10,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:48:10,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:48:10,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:48:10,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:48:10,171 INFO L87 Difference]: Start difference. First operand 2745 states and 3648 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:48:12,296 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:48:24,553 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:48:47,553 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:49:13,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:49:13,625 INFO L93 Difference]: Finished difference Result 7860 states and 10560 transitions. [2021-11-02 21:49:13,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:49:13,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-11-02 21:49:13,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:49:13,658 INFO L225 Difference]: With dead ends: 7860 [2021-11-02 21:49:13,659 INFO L226 Difference]: Without dead ends: 5211 [2021-11-02 21:49:13,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.52ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:49:13,674 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 3327 mSDsluCounter, 3632 mSDsCounter, 0 mSdLazyCounter, 6830 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59632.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3327 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 6835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 80.64ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6830 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62751.61ms IncrementalHoareTripleChecker+Time [2021-11-02 21:49:13,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3327 Valid, 626 Invalid, 6835 Unknown, 0 Unchecked, 80.64ms Time], IncrementalHoareTripleChecker [3 Valid, 6830 Invalid, 2 Unknown, 0 Unchecked, 62751.61ms Time] [2021-11-02 21:49:13,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5211 states. [2021-11-02 21:49:13,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5211 to 5075. [2021-11-02 21:49:13,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5075 states, 4733 states have (on average 1.3557997042045213) internal successors, (6417), 4801 states have internal predecessors, (6417), 215 states have call successors, (215), 74 states have call predecessors, (215), 74 states have return successors, (292), 203 states have call predecessors, (292), 215 states have call successors, (292) [2021-11-02 21:49:13,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5075 states to 5075 states and 6924 transitions. [2021-11-02 21:49:13,819 INFO L78 Accepts]: Start accepts. Automaton has 5075 states and 6924 transitions. Word has length 107 [2021-11-02 21:49:13,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:49:13,819 INFO L470 AbstractCegarLoop]: Abstraction has 5075 states and 6924 transitions. [2021-11-02 21:49:13,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:49:13,820 INFO L276 IsEmpty]: Start isEmpty. Operand 5075 states and 6924 transitions. [2021-11-02 21:49:13,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-02 21:49:13,821 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:49:13,821 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:49:13,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 21:49:13,822 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-02 21:49:13,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:49:13,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1468383263, now seen corresponding path program 1 times [2021-11-02 21:49:13,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:49:13,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885694754] [2021-11-02 21:49:13,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:49:13,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:49:14,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:49:14,304 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 21:49:14,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:49:14,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885694754] [2021-11-02 21:49:14,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885694754] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:49:14,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:49:14,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:49:14,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508385419] [2021-11-02 21:49:14,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:49:14,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:49:14,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:49:14,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:49:14,306 INFO L87 Difference]: Start difference. First operand 5075 states and 6924 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:49:16,435 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:49:23,778 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:49:43,778 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:50:22,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:50:22,741 INFO L93 Difference]: Finished difference Result 13869 states and 18913 transitions. [2021-11-02 21:50:22,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:50:22,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-02 21:50:22,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:50:22,785 INFO L225 Difference]: With dead ends: 13869 [2021-11-02 21:50:22,786 INFO L226 Difference]: Without dead ends: 8890 [2021-11-02 21:50:22,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.96ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:50:22,811 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 2668 mSDsluCounter, 3535 mSDsCounter, 0 mSdLazyCounter, 7364 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64118.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2668 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 7367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 51.64ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7364 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67689.87ms IncrementalHoareTripleChecker+Time [2021-11-02 21:50:22,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2668 Valid, 551 Invalid, 7367 Unknown, 0 Unchecked, 51.64ms Time], IncrementalHoareTripleChecker [1 Valid, 7364 Invalid, 2 Unknown, 0 Unchecked, 67689.87ms Time] [2021-11-02 21:50:22,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8890 states. [2021-11-02 21:50:23,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8890 to 8735. [2021-11-02 21:50:23,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8735 states, 8181 states have (on average 1.3576579880210242) internal successors, (11107), 8263 states have internal predecessors, (11107), 362 states have call successors, (362), 139 states have call predecessors, (362), 139 states have return successors, (500), 339 states have call predecessors, (500), 362 states have call successors, (500) [2021-11-02 21:50:23,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8735 states to 8735 states and 11969 transitions. [2021-11-02 21:50:23,059 INFO L78 Accepts]: Start accepts. Automaton has 8735 states and 11969 transitions. Word has length 110 [2021-11-02 21:50:23,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:50:23,061 INFO L470 AbstractCegarLoop]: Abstraction has 8735 states and 11969 transitions. [2021-11-02 21:50:23,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:50:23,061 INFO L276 IsEmpty]: Start isEmpty. Operand 8735 states and 11969 transitions. [2021-11-02 21:50:23,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-02 21:50:23,064 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:50:23,064 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:50:23,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 21:50:23,065 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting usb_serial_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-02 21:50:23,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:50:23,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1247001365, now seen corresponding path program 1 times [2021-11-02 21:50:23,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:50:23,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595362762] [2021-11-02 21:50:23,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:50:23,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:50:23,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:50:23,518 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 21:50:23,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:50:23,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595362762] [2021-11-02 21:50:23,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595362762] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:50:23,518 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:50:23,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:50:23,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774581957] [2021-11-02 21:50:23,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:50:23,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:50:23,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:50:23,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:50:23,520 INFO L87 Difference]: Start difference. First operand 8735 states and 11969 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:50:25,643 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:50:32,323 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:51:43,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:51:43,607 INFO L93 Difference]: Finished difference Result 25382 states and 35012 transitions. [2021-11-02 21:51:43,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:51:43,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-02 21:51:43,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:51:43,699 INFO L225 Difference]: With dead ends: 25382 [2021-11-02 21:51:43,699 INFO L226 Difference]: Without dead ends: 16743 [2021-11-02 21:51:43,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.51ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:51:43,744 INFO L933 BasicCegarLoop]: 455 mSDtfsCounter, 3318 mSDsluCounter, 3597 mSDsCounter, 0 mSdLazyCounter, 8997 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 74838.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3318 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 9006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 59.85ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 8997 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 79224.36ms IncrementalHoareTripleChecker+Time [2021-11-02 21:51:43,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3318 Valid, 679 Invalid, 9006 Unknown, 0 Unchecked, 59.85ms Time], IncrementalHoareTripleChecker [7 Valid, 8997 Invalid, 2 Unknown, 0 Unchecked, 79224.36ms Time] [2021-11-02 21:51:43,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16743 states. [2021-11-02 21:51:44,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16743 to 16529. [2021-11-02 21:51:44,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16529 states, 15518 states have (on average 1.3611290114705503) internal successors, (21122), 15622 states have internal predecessors, (21122), 688 states have call successors, (688), 266 states have call predecessors, (688), 270 states have return successors, (1148), 654 states have call predecessors, (1148), 688 states have call successors, (1148) [2021-11-02 21:51:44,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16529 states to 16529 states and 22958 transitions. [2021-11-02 21:51:44,178 INFO L78 Accepts]: Start accepts. Automaton has 16529 states and 22958 transitions. Word has length 115 [2021-11-02 21:51:44,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:51:44,181 INFO L470 AbstractCegarLoop]: Abstraction has 16529 states and 22958 transitions. [2021-11-02 21:51:44,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:51:44,181 INFO L276 IsEmpty]: Start isEmpty. Operand 16529 states and 22958 transitions. [2021-11-02 21:51:44,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-02 21:51:44,185 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:51:44,185 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:51:44,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 21:51:44,186 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-02 21:51:44,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:51:44,189 INFO L85 PathProgramCache]: Analyzing trace with hash -938770269, now seen corresponding path program 1 times [2021-11-02 21:51:44,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:51:44,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312708534] [2021-11-02 21:51:44,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:51:44,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:51:44,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:51:44,726 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 21:51:44,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:51:44,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312708534] [2021-11-02 21:51:44,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312708534] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:51:44,726 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:51:44,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:51:44,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177515952] [2021-11-02 21:51:44,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:51:44,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:51:44,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:51:44,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:51:44,728 INFO L87 Difference]: Start difference. First operand 16529 states and 22958 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:51:46,845 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:51:53,403 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:53:06,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:53:06,499 INFO L93 Difference]: Finished difference Result 48889 states and 68064 transitions. [2021-11-02 21:53:06,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:53:06,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-02 21:53:06,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:53:06,661 INFO L225 Difference]: With dead ends: 48889 [2021-11-02 21:53:06,661 INFO L226 Difference]: Without dead ends: 32456 [2021-11-02 21:53:06,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.42ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:53:06,745 INFO L933 BasicCegarLoop]: 421 mSDtfsCounter, 3250 mSDsluCounter, 3604 mSDsCounter, 0 mSdLazyCounter, 9042 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 76218.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3250 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 9047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 58.58ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9042 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 80705.48ms IncrementalHoareTripleChecker+Time [2021-11-02 21:53:06,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3250 Valid, 645 Invalid, 9047 Unknown, 0 Unchecked, 58.58ms Time], IncrementalHoareTripleChecker [3 Valid, 9042 Invalid, 2 Unknown, 0 Unchecked, 80705.48ms Time] [2021-11-02 21:53:06,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32456 states. [2021-11-02 21:53:07,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32456 to 32372. [2021-11-02 21:53:07,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32372 states, 30403 states have (on average 1.364207479525047) internal successors, (41476), 30559 states have internal predecessors, (41476), 1376 states have call successors, (1376), 532 states have call predecessors, (1376), 540 states have return successors, (2296), 1308 states have call predecessors, (2296), 1376 states have call successors, (2296) [2021-11-02 21:53:07,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32372 states to 32372 states and 45148 transitions. [2021-11-02 21:53:07,776 INFO L78 Accepts]: Start accepts. Automaton has 32372 states and 45148 transitions. Word has length 115 [2021-11-02 21:53:07,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:53:07,777 INFO L470 AbstractCegarLoop]: Abstraction has 32372 states and 45148 transitions. [2021-11-02 21:53:07,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:53:07,777 INFO L276 IsEmpty]: Start isEmpty. Operand 32372 states and 45148 transitions. [2021-11-02 21:53:07,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-02 21:53:07,780 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:53:07,780 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:53:07,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 21:53:07,781 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-02 21:53:07,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:53:07,782 INFO L85 PathProgramCache]: Analyzing trace with hash -757809800, now seen corresponding path program 1 times [2021-11-02 21:53:07,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:53:07,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370843634] [2021-11-02 21:53:07,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:53:07,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:53:08,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:53:08,279 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 21:53:08,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:53:08,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370843634] [2021-11-02 21:53:08,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370843634] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:53:08,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:53:08,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 21:53:08,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766141799] [2021-11-02 21:53:08,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:53:08,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:53:08,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:53:08,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:53:08,281 INFO L87 Difference]: Start difference. First operand 32372 states and 45148 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:53:10,407 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:53:16,249 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:54:27,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:54:27,672 INFO L93 Difference]: Finished difference Result 93339 states and 132750 transitions. [2021-11-02 21:54:27,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:54:27,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-02 21:54:27,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:54:28,160 INFO L225 Difference]: With dead ends: 93339 [2021-11-02 21:54:28,161 INFO L226 Difference]: Without dead ends: 61063 [2021-11-02 21:54:28,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.98ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:54:28,352 INFO L933 BasicCegarLoop]: 459 mSDtfsCounter, 3179 mSDsluCounter, 3331 mSDsCounter, 0 mSdLazyCounter, 8518 mSolverCounterSat, 41 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 72927.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3179 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 8561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 59.51ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 8518 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 77406.81ms IncrementalHoareTripleChecker+Time [2021-11-02 21:54:28,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3179 Valid, 673 Invalid, 8561 Unknown, 0 Unchecked, 59.51ms Time], IncrementalHoareTripleChecker [41 Valid, 8518 Invalid, 2 Unknown, 0 Unchecked, 77406.81ms Time] [2021-11-02 21:54:28,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61063 states. [2021-11-02 21:54:29,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61063 to 60810. [2021-11-02 21:54:29,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60810 states, 57071 states have (on average 1.36573741479911) internal successors, (77944), 57389 states have internal predecessors, (77944), 2638 states have call successors, (2638), 1058 states have call predecessors, (2638), 1048 states have return successors, (5684), 2418 states have call predecessors, (5684), 2638 states have call successors, (5684) [2021-11-02 21:54:30,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60810 states to 60810 states and 86266 transitions. [2021-11-02 21:54:30,257 INFO L78 Accepts]: Start accepts. Automaton has 60810 states and 86266 transitions. Word has length 122 [2021-11-02 21:54:30,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:54:30,258 INFO L470 AbstractCegarLoop]: Abstraction has 60810 states and 86266 transitions. [2021-11-02 21:54:30,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:54:30,258 INFO L276 IsEmpty]: Start isEmpty. Operand 60810 states and 86266 transitions. [2021-11-02 21:54:30,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-02 21:54:30,260 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:54:30,260 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:54:30,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 21:54:30,260 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-02 21:54:30,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:54:30,261 INFO L85 PathProgramCache]: Analyzing trace with hash -2017254359, now seen corresponding path program 1 times [2021-11-02 21:54:30,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:54:30,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780935530] [2021-11-02 21:54:30,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:54:30,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:54:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:54:30,942 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 21:54:30,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:54:30,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780935530] [2021-11-02 21:54:30,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780935530] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:54:30,942 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:54:30,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 21:54:30,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137768586] [2021-11-02 21:54:30,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:54:30,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:54:30,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:54:30,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:54:30,944 INFO L87 Difference]: Start difference. First operand 60810 states and 86266 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:54:33,073 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:54:39,084 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:54:55,654 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:55:10,261 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:55:57,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:55:57,403 INFO L93 Difference]: Finished difference Result 89832 states and 126758 transitions. [2021-11-02 21:55:57,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:55:57,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2021-11-02 21:55:57,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:55:57,763 INFO L225 Difference]: With dead ends: 89832 [2021-11-02 21:55:57,765 INFO L226 Difference]: Without dead ends: 89830 [2021-11-02 21:55:57,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.08ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:55:57,826 INFO L933 BasicCegarLoop]: 407 mSDtfsCounter, 3246 mSDsluCounter, 3528 mSDsCounter, 0 mSdLazyCounter, 8921 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 79619.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3246 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 8924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 57.94ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8921 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 84739.81ms IncrementalHoareTripleChecker+Time [2021-11-02 21:55:57,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3246 Valid, 631 Invalid, 8924 Unknown, 0 Unchecked, 57.94ms Time], IncrementalHoareTripleChecker [1 Valid, 8921 Invalid, 2 Unknown, 0 Unchecked, 84739.81ms Time] [2021-11-02 21:55:57,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89830 states. [2021-11-02 21:55:59,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89830 to 89723. [2021-11-02 21:55:59,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89723 states, 84236 states have (on average 1.3653069946341232) internal successors, (115008), 84684 states have internal predecessors, (115008), 3878 states have call successors, (3878), 1560 states have call predecessors, (3878), 1556 states have return successors, (7808), 3562 states have call predecessors, (7808), 3878 states have call successors, (7808) [2021-11-02 21:56:00,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89723 states to 89723 states and 126694 transitions. [2021-11-02 21:56:00,702 INFO L78 Accepts]: Start accepts. Automaton has 89723 states and 126694 transitions. Word has length 123 [2021-11-02 21:56:00,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:56:00,702 INFO L470 AbstractCegarLoop]: Abstraction has 89723 states and 126694 transitions. [2021-11-02 21:56:00,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:56:00,703 INFO L276 IsEmpty]: Start isEmpty. Operand 89723 states and 126694 transitions. [2021-11-02 21:56:00,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-02 21:56:00,705 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:56:00,705 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:56:00,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 21:56:00,705 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-02 21:56:00,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:56:00,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1889637282, now seen corresponding path program 1 times [2021-11-02 21:56:00,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:56:00,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082334075] [2021-11-02 21:56:00,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:56:00,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:56:01,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:56:01,253 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 21:56:01,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:56:01,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082334075] [2021-11-02 21:56:01,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082334075] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:56:01,254 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:56:01,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 21:56:01,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415227649] [2021-11-02 21:56:01,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:56:01,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:56:01,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:56:01,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:56:01,255 INFO L87 Difference]: Start difference. First operand 89723 states and 126694 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:56:03,408 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:56:09,617 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:57:27,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:57:27,108 INFO L93 Difference]: Finished difference Result 89833 states and 126759 transitions. [2021-11-02 21:57:27,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:57:27,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-02 21:57:27,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:57:27,453 INFO L225 Difference]: With dead ends: 89833 [2021-11-02 21:57:27,453 INFO L226 Difference]: Without dead ends: 89831 [2021-11-02 21:57:27,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.78ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:57:27,516 INFO L933 BasicCegarLoop]: 407 mSDtfsCounter, 3243 mSDsluCounter, 3531 mSDsCounter, 0 mSdLazyCounter, 8924 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 78569.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3243 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 8927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 58.22ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8924 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 84000.88ms IncrementalHoareTripleChecker+Time [2021-11-02 21:57:27,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3243 Valid, 631 Invalid, 8927 Unknown, 0 Unchecked, 58.22ms Time], IncrementalHoareTripleChecker [1 Valid, 8924 Invalid, 2 Unknown, 0 Unchecked, 84000.88ms Time] [2021-11-02 21:57:27,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89831 states. [2021-11-02 21:57:29,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89831 to 89724. [2021-11-02 21:57:29,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89724 states, 84237 states have (on average 1.3653026579768985) internal successors, (115009), 84685 states have internal predecessors, (115009), 3878 states have call successors, (3878), 1560 states have call predecessors, (3878), 1556 states have return successors, (7808), 3562 states have call predecessors, (7808), 3878 states have call successors, (7808) [2021-11-02 21:57:29,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89724 states to 89724 states and 126695 transitions. [2021-11-02 21:57:29,996 INFO L78 Accepts]: Start accepts. Automaton has 89724 states and 126695 transitions. Word has length 124 [2021-11-02 21:57:29,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:57:29,997 INFO L470 AbstractCegarLoop]: Abstraction has 89724 states and 126695 transitions. [2021-11-02 21:57:29,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:57:29,997 INFO L276 IsEmpty]: Start isEmpty. Operand 89724 states and 126695 transitions. [2021-11-02 21:57:29,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-02 21:57:29,999 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:57:29,999 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:57:30,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 21:57:30,000 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-02 21:57:30,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:57:30,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1550773421, now seen corresponding path program 1 times [2021-11-02 21:57:30,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:57:30,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300884645] [2021-11-02 21:57:30,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:57:30,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:57:30,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:57:30,612 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 21:57:30,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:57:30,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300884645] [2021-11-02 21:57:30,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300884645] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:57:30,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:57:30,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 21:57:30,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225815849] [2021-11-02 21:57:30,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:57:30,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:57:30,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:57:30,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:57:30,614 INFO L87 Difference]: Start difference. First operand 89724 states and 126695 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:57:32,813 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:57:38,992 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15