./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-08_1a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 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-08_1a-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 267df3d840ee451a69f2c9c23fc4c286b307e31eb8c416518f7dce9b4c82858a --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 18:09:38,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 18:09:38,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 18:09:38,109 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 18:09:38,109 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 18:09:38,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 18:09:38,113 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 18:09:38,117 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 18:09:38,120 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 18:09:38,123 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 18:09:38,124 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 18:09:38,127 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 18:09:38,128 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 18:09:38,130 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 18:09:38,131 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 18:09:38,135 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 18:09:38,136 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 18:09:38,136 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 18:09:38,139 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 18:09:38,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 18:09:38,145 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 18:09:38,146 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 18:09:38,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 18:09:38,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 18:09:38,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 18:09:38,156 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 18:09:38,156 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 18:09:38,157 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 18:09:38,158 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 18:09:38,158 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 18:09:38,159 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 18:09:38,159 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 18:09:38,161 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 18:09:38,161 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 18:09:38,162 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 18:09:38,163 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 18:09:38,163 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 18:09:38,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 18:09:38,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 18:09:38,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 18:09:38,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 18:09:38,169 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 18:09:38,204 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 18:09:38,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 18:09:38,205 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 18:09:38,205 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 18:09:38,207 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 18:09:38,207 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 18:09:38,207 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 18:09:38,208 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 18:09:38,208 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 18:09:38,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 18:09:38,209 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 18:09:38,209 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 18:09:38,209 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 18:09:38,209 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 18:09:38,210 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 18:09:38,210 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 18:09:38,210 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 18:09:38,210 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 18:09:38,210 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 18:09:38,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 18:09:38,211 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 18:09:38,211 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 18:09:38,211 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 18:09:38,211 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 18:09:38,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 18:09:38,219 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 18:09:38,219 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 18:09:38,219 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 18:09:38,219 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 18:09:38,219 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 267df3d840ee451a69f2c9c23fc4c286b307e31eb8c416518f7dce9b4c82858a [2021-11-05 18:09:38,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 18:09:38,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 18:09:38,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 18:09:38,525 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 18:09:38,526 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 18:09:38,527 INFO L432 ainManager$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-08_1a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-11-05 18:09:38,591 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6df9dd490/784d182a5c2c49a7966434fb55fec1cb/FLAG5e30e47c1 [2021-11-05 18:09:39,338 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 18:09:39,338 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-11-05 18:09:39,385 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6df9dd490/784d182a5c2c49a7966434fb55fec1cb/FLAG5e30e47c1 [2021-11-05 18:09:39,890 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6df9dd490/784d182a5c2c49a7966434fb55fec1cb [2021-11-05 18:09:39,892 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 18:09:39,893 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 18:09:39,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 18:09:39,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 18:09:39,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 18:09:39,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 06:09:39" (1/1) ... [2021-11-05 18:09:39,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20855d60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:09:39, skipping insertion in model container [2021-11-05 18:09:39,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 06:09:39" (1/1) ... [2021-11-05 18:09:39,909 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 18:09:40,045 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 18:09:41,895 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-08_1a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[313744,313757] [2021-11-05 18:09:41,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 18:09:42,013 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 18:09:42,393 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-08_1a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[313744,313757] [2021-11-05 18:09:42,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 18:09:42,573 INFO L208 MainTranslator]: Completed translation [2021-11-05 18:09:42,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:09:42 WrapperNode [2021-11-05 18:09:42,574 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 18:09:42,576 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 18:09:42,576 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 18:09:42,576 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 18:09:42,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:09:42" (1/1) ... [2021-11-05 18:09:42,698 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:09:42" (1/1) ... [2021-11-05 18:09:43,086 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 18:09:43,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 18:09:43,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 18:09:43,088 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 18:09:43,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:09:42" (1/1) ... [2021-11-05 18:09:43,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:09:42" (1/1) ... [2021-11-05 18:09:43,247 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:09:42" (1/1) ... [2021-11-05 18:09:43,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:09:42" (1/1) ... [2021-11-05 18:09:43,555 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:09:42" (1/1) ... [2021-11-05 18:09:43,601 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:09:42" (1/1) ... [2021-11-05 18:09:43,642 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:09:42" (1/1) ... [2021-11-05 18:09:43,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 18:09:43,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 18:09:43,708 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 18:09:43,708 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 18:09:43,709 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:09:42" (1/1) ... [2021-11-05 18:09:43,714 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 18:09:43,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 18:09:43,745 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) [2021-11-05 18:09:43,767 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 [2021-11-05 18:09:43,781 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_dtr_rts [2021-11-05 18:09:43,781 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_dtr_rts [2021-11-05 18:09:43,781 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_remove [2021-11-05 18:09:43,782 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_remove [2021-11-05 18:09:43,782 INFO L130 BoogieDeclarations]: Found specification of procedure serial_chars_in_buffer [2021-11-05 18:09:43,782 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_chars_in_buffer [2021-11-05 18:09:43,783 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_activate [2021-11-05 18:09:43,783 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_activate [2021-11-05 18:09:43,783 INFO L130 BoogieDeclarations]: Found specification of procedure serial_ioctl [2021-11-05 18:09:43,783 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_ioctl [2021-11-05 18:09:43,783 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write_room [2021-11-05 18:09:43,783 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write_room [2021-11-05 18:09:43,783 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-05 18:09:43,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-05 18:09:43,784 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_probe [2021-11-05 18:09:43,784 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_probe [2021-11-05 18:09:43,784 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-05 18:09:43,784 INFO L130 BoogieDeclarations]: Found specification of procedure serial_get_icount [2021-11-05 18:09:43,784 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_get_icount [2021-11-05 18:09:43,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 18:09:43,785 INFO L130 BoogieDeclarations]: Found specification of procedure serial_cleanup [2021-11-05 18:09:43,785 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_cleanup [2021-11-05 18:09:43,785 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_carrier_raised [2021-11-05 18:09:43,785 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_carrier_raised [2021-11-05 18:09:43,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 18:09:43,785 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2021-11-05 18:09:43,786 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2021-11-05 18:09:43,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 18:09:43,786 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_reset_resume [2021-11-05 18:09:43,786 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_reset_resume [2021-11-05 18:09:43,786 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_read_bulk_callback [2021-11-05 18:09:43,786 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_read_bulk_callback [2021-11-05 18:09:43,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 18:09:43,787 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_shutdown [2021-11-05 18:09:43,787 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_shutdown [2021-11-05 18:09:43,787 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2021-11-05 18:09:43,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2021-11-05 18:09:43,787 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-05 18:09:43,787 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-05 18:09:43,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 18:09:43,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 18:09:43,788 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-05 18:09:43,788 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-05 18:09:43,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-05 18:09:43,789 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-05 18:09:43,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-05 18:09:43,789 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_put [2021-11-05 18:09:43,789 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_put [2021-11-05 18:09:43,789 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_serial [2021-11-05 18:09:43,789 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_serial [2021-11-05 18:09:43,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 18:09:43,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 18:09:43,790 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_start [2021-11-05 18:09:43,790 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_start [2021-11-05 18:09:43,790 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-11-05 18:09:43,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-11-05 18:09:43,790 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-11-05 18:09:43,790 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-11-05 18:09:43,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 18:09:43,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 18:09:43,792 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write [2021-11-05 18:09:43,792 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write [2021-11-05 18:09:43,793 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2021-11-05 18:09:43,793 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2021-11-05 18:09:43,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 18:09:43,793 INFO L130 BoogieDeclarations]: Found specification of procedure serial_unthrottle [2021-11-05 18:09:43,793 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_unthrottle [2021-11-05 18:09:43,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 18:09:43,793 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-05 18:09:43,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-05 18:09:43,794 INFO L130 BoogieDeclarations]: Found specification of procedure serial_throttle [2021-11-05 18:09:43,794 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_throttle [2021-11-05 18:09:43,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 18:09:43,794 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-05 18:09:43,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-05 18:09:43,795 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmget [2021-11-05 18:09:43,795 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmget [2021-11-05 18:09:43,795 INFO L130 BoogieDeclarations]: Found specification of procedure serial_wait_until_sent [2021-11-05 18:09:43,795 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_wait_until_sent [2021-11-05 18:09:43,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 18:09:43,796 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2021-11-05 18:09:43,796 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2021-11-05 18:09:43,796 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2021-11-05 18:09:43,796 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2021-11-05 18:09:43,796 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmset [2021-11-05 18:09:43,796 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmset [2021-11-05 18:09:43,797 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write [2021-11-05 18:09:43,797 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write [2021-11-05 18:09:43,797 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-05 18:09:43,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-05 18:09:43,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 18:10:17,078 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 18:10:17,078 INFO L299 CfgBuilder]: Removed 2091 assume(true) statements. [2021-11-05 18:10:17,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 06:10:17 BoogieIcfgContainer [2021-11-05 18:10:17,082 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 18:10:17,083 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 18:10:17,084 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 18:10:17,086 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 18:10:17,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 06:09:39" (1/3) ... [2021-11-05 18:10:17,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e723e54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 06:10:17, skipping insertion in model container [2021-11-05 18:10:17,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:09:42" (2/3) ... [2021-11-05 18:10:17,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e723e54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 06:10:17, skipping insertion in model container [2021-11-05 18:10:17,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 06:10:17" (3/3) ... [2021-11-05 18:10:17,088 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-11-05 18:10:17,092 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 18:10:17,093 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-05 18:10:17,134 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 18:10:17,140 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 [2021-11-05 18:10:17,140 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-05 18:10:17,187 INFO L276 IsEmpty]: Start isEmpty. Operand has 2561 states, 2400 states have (on average 1.3958333333333333) internal successors, (3350), 2420 states have internal predecessors, (3350), 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) [2021-11-05 18:10:17,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-05 18:10:17,216 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:10:17,217 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] [2021-11-05 18:10:17,217 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 18:10:17,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:10:17,222 INFO L85 PathProgramCache]: Analyzing trace with hash -446975168, now seen corresponding path program 1 times [2021-11-05 18:10:17,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:10:17,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327156543] [2021-11-05 18:10:17,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:10:17,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:10:17,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:10:18,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:10:18,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:10:18,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327156543] [2021-11-05 18:10:18,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327156543] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:10:18,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:10:18,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 18:10:18,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754212919] [2021-11-05 18:10:18,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:10:18,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 18:10:18,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:10:18,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 18:10:18,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 18:10:18,217 INFO L87 Difference]: Start difference. First operand has 2561 states, 2400 states have (on average 1.3958333333333333) internal successors, (3350), 2420 states have internal predecessors, (3350), 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 55.0) internal successors, (110), 2 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) [2021-11-05 18:10:18,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:10:18,399 INFO L93 Difference]: Finished difference Result 5118 states and 7222 transitions. [2021-11-05 18:10:18,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 18:10:18,401 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 55.0) internal successors, (110), 2 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 [2021-11-05 18:10:18,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:10:18,433 INFO L225 Difference]: With dead ends: 5118 [2021-11-05 18:10:18,434 INFO L226 Difference]: Without dead ends: 2546 [2021-11-05 18:10:18,454 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 [2021-11-05 18:10:18,459 INFO L933 BasicCegarLoop]: 3493 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3493 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.34ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 18:10:18,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3493 Invalid, 0 Unknown, 0 Unchecked, 23.34ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 18:10:18,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2546 states. [2021-11-05 18:10:18,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2546 to 2546. [2021-11-05 18:10:18,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2546 states, 2386 states have (on average 1.359178541492037) internal successors, (3243), 2405 states have internal predecessors, (3243), 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) [2021-11-05 18:10:18,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2546 states to 2546 states and 3467 transitions. [2021-11-05 18:10:18,614 INFO L78 Accepts]: Start accepts. Automaton has 2546 states and 3467 transitions. Word has length 110 [2021-11-05 18:10:18,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:10:18,615 INFO L470 AbstractCegarLoop]: Abstraction has 2546 states and 3467 transitions. [2021-11-05 18:10:18,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 55.0) internal successors, (110), 2 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) [2021-11-05 18:10:18,615 INFO L276 IsEmpty]: Start isEmpty. Operand 2546 states and 3467 transitions. [2021-11-05 18:10:18,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-05 18:10:18,623 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:10:18,623 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] [2021-11-05 18:10:18,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 18:10:18,623 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 18:10:18,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:10:18,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1434476754, now seen corresponding path program 1 times [2021-11-05 18:10:18,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:10:18,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510781330] [2021-11-05 18:10:18,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:10:18,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:10:18,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:10:19,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:10:19,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:10:19,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510781330] [2021-11-05 18:10:19,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510781330] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:10:19,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:10:19,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 18:10:19,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629635591] [2021-11-05 18:10:19,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:10:19,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:10:19,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:10:19,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:10:19,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:10:19,189 INFO L87 Difference]: Start difference. First operand 2546 states and 3467 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) [2021-11-05 18:10:21,346 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 [] [2021-11-05 18:10:21,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:10:21,675 INFO L93 Difference]: Finished difference Result 7260 states and 9953 transitions. [2021-11-05 18:10:21,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:10:21,676 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 [2021-11-05 18:10:21,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:10:21,701 INFO L225 Difference]: With dead ends: 7260 [2021-11-05 18:10:21,701 INFO L226 Difference]: Without dead ends: 4798 [2021-11-05 18:10:21,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.25ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:10:21,714 INFO L933 BasicCegarLoop]: 3576 mSDtfsCounter, 3290 mSDsluCounter, 3266 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2152.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3290 SdHoareTripleChecker+Valid, 6842 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.64ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2309.19ms IncrementalHoareTripleChecker+Time [2021-11-05 18:10:21,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3290 Valid, 6842 Invalid, 15 Unknown, 0 Unchecked, 19.64ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2309.19ms Time] [2021-11-05 18:10:21,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4798 states. [2021-11-05 18:10:21,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4798 to 4778. [2021-11-05 18:10:21,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4778 states, 4469 states have (on average 1.3696576415305437) internal successors, (6121), 4497 states have internal predecessors, (6121), 224 states have call successors, (224), 74 states have call predecessors, (224), 74 states have return successors, (224), 210 states have call predecessors, (224), 224 states have call successors, (224) [2021-11-05 18:10:21,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4778 states to 4778 states and 6569 transitions. [2021-11-05 18:10:21,850 INFO L78 Accepts]: Start accepts. Automaton has 4778 states and 6569 transitions. Word has length 110 [2021-11-05 18:10:21,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:10:21,850 INFO L470 AbstractCegarLoop]: Abstraction has 4778 states and 6569 transitions. [2021-11-05 18:10:21,851 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) [2021-11-05 18:10:21,851 INFO L276 IsEmpty]: Start isEmpty. Operand 4778 states and 6569 transitions. [2021-11-05 18:10:21,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-05 18:10:21,860 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:10:21,860 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] [2021-11-05 18:10:21,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 18:10:21,861 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 18:10:21,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:10:21,862 INFO L85 PathProgramCache]: Analyzing trace with hash -376049304, now seen corresponding path program 1 times [2021-11-05 18:10:21,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:10:21,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592016183] [2021-11-05 18:10:21,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:10:21,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:10:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:10:22,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:10:22,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:10:22,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592016183] [2021-11-05 18:10:22,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592016183] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:10:22,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:10:22,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 18:10:22,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665898222] [2021-11-05 18:10:22,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:10:22,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:10:22,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:10:22,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:10:22,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:10:22,439 INFO L87 Difference]: Start difference. First operand 4778 states and 6569 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 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) [2021-11-05 18:10:22,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:10:22,730 INFO L93 Difference]: Finished difference Result 14144 states and 19610 transitions. [2021-11-05 18:10:22,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:10:22,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 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 [2021-11-05 18:10:22,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:10:22,794 INFO L225 Difference]: With dead ends: 14144 [2021-11-05 18:10:22,795 INFO L226 Difference]: Without dead ends: 9427 [2021-11-05 18:10:22,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.19ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:10:22,832 INFO L933 BasicCegarLoop]: 3568 mSDtfsCounter, 3333 mSDsluCounter, 3346 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3333 SdHoareTripleChecker+Valid, 6914 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.86ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63.02ms IncrementalHoareTripleChecker+Time [2021-11-05 18:10:22,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3333 Valid, 6914 Invalid, 59 Unknown, 0 Unchecked, 14.86ms Time], IncrementalHoareTripleChecker [10 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 63.02ms Time] [2021-11-05 18:10:22,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9427 states. [2021-11-05 18:10:23,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9427 to 9397. [2021-11-05 18:10:23,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9397 states, 8790 states have (on average 1.3717861205915813) internal successors, (12058), 8836 states have internal predecessors, (12058), 448 states have call successors, (448), 148 states have call predecessors, (448), 148 states have return successors, (468), 420 states have call predecessors, (468), 448 states have call successors, (468) [2021-11-05 18:10:23,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9397 states to 9397 states and 12974 transitions. [2021-11-05 18:10:23,132 INFO L78 Accepts]: Start accepts. Automaton has 9397 states and 12974 transitions. Word has length 110 [2021-11-05 18:10:23,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:10:23,133 INFO L470 AbstractCegarLoop]: Abstraction has 9397 states and 12974 transitions. [2021-11-05 18:10:23,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 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) [2021-11-05 18:10:23,134 INFO L276 IsEmpty]: Start isEmpty. Operand 9397 states and 12974 transitions. [2021-11-05 18:10:23,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-05 18:10:23,144 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:10:23,144 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] [2021-11-05 18:10:23,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 18:10:23,144 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting usb_serial_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 18:10:23,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:10:23,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1377137642, now seen corresponding path program 1 times [2021-11-05 18:10:23,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:10:23,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962111038] [2021-11-05 18:10:23,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:10:23,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:10:23,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:10:23,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:10:23,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:10:23,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962111038] [2021-11-05 18:10:23,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962111038] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:10:23,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:10:23,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 18:10:23,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004987569] [2021-11-05 18:10:23,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:10:23,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:10:23,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:10:23,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:10:23,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:10:23,640 INFO L87 Difference]: Start difference. First operand 9397 states and 12974 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2021-11-05 18:10:24,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:10:24,237 INFO L93 Difference]: Finished difference Result 27578 states and 38331 transitions. [2021-11-05 18:10:24,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:10:24,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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 122 [2021-11-05 18:10:24,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:10:24,351 INFO L225 Difference]: With dead ends: 27578 [2021-11-05 18:10:24,351 INFO L226 Difference]: Without dead ends: 18265 [2021-11-05 18:10:24,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.14ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:10:24,411 INFO L933 BasicCegarLoop]: 3632 mSDtfsCounter, 3269 mSDsluCounter, 3336 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 154.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3269 SdHoareTripleChecker+Valid, 6968 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.36ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 182.33ms IncrementalHoareTripleChecker+Time [2021-11-05 18:10:24,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3269 Valid, 6968 Invalid, 34 Unknown, 0 Unchecked, 13.36ms Time], IncrementalHoareTripleChecker [9 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 182.33ms Time] [2021-11-05 18:10:24,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18265 states. [2021-11-05 18:10:24,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18265 to 18147. [2021-11-05 18:10:25,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18147 states, 16980 states have (on average 1.3749116607773852) internal successors, (23346), 17058 states have internal predecessors, (23346), 868 states have call successors, (868), 288 states have call predecessors, (868), 288 states have return successors, (1118), 816 states have call predecessors, (1118), 868 states have call successors, (1118) [2021-11-05 18:10:25,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18147 states to 18147 states and 25332 transitions. [2021-11-05 18:10:25,096 INFO L78 Accepts]: Start accepts. Automaton has 18147 states and 25332 transitions. Word has length 122 [2021-11-05 18:10:25,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:10:25,097 INFO L470 AbstractCegarLoop]: Abstraction has 18147 states and 25332 transitions. [2021-11-05 18:10:25,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2021-11-05 18:10:25,098 INFO L276 IsEmpty]: Start isEmpty. Operand 18147 states and 25332 transitions. [2021-11-05 18:10:25,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-05 18:10:25,108 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:10:25,109 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] [2021-11-05 18:10:25,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 18:10:25,109 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 18:10:25,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:10:25,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1382664594, now seen corresponding path program 1 times [2021-11-05 18:10:25,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:10:25,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915509134] [2021-11-05 18:10:25,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:10:25,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:10:25,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:10:25,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:10:25,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:10:25,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915509134] [2021-11-05 18:10:25,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915509134] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:10:25,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:10:25,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 18:10:25,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097512323] [2021-11-05 18:10:25,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:10:25,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:10:25,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:10:25,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:10:25,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:10:25,565 INFO L87 Difference]: Start difference. First operand 18147 states and 25332 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 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) [2021-11-05 18:10:26,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:10:26,647 INFO L93 Difference]: Finished difference Result 50815 states and 70676 transitions. [2021-11-05 18:10:26,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:10:26,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 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 [2021-11-05 18:10:26,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:10:26,833 INFO L225 Difference]: With dead ends: 50815 [2021-11-05 18:10:26,834 INFO L226 Difference]: Without dead ends: 32752 [2021-11-05 18:10:26,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.13ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:10:26,926 INFO L933 BasicCegarLoop]: 3580 mSDtfsCounter, 2815 mSDsluCounter, 3275 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 309.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2815 SdHoareTripleChecker+Valid, 6855 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.16ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 356.39ms IncrementalHoareTripleChecker+Time [2021-11-05 18:10:26,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2815 Valid, 6855 Invalid, 98 Unknown, 0 Unchecked, 14.16ms Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 356.39ms Time] [2021-11-05 18:10:26,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32752 states. [2021-11-05 18:10:27,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32752 to 32607. [2021-11-05 18:10:27,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32607 states, 30564 states have (on average 1.3706975526763512) internal successors, (41894), 30710 states have internal predecessors, (41894), 1480 states have call successors, (1480), 552 states have call predecessors, (1480), 552 states have return successors, (1920), 1376 states have call predecessors, (1920), 1480 states have call successors, (1920) [2021-11-05 18:10:27,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32607 states to 32607 states and 45294 transitions. [2021-11-05 18:10:27,918 INFO L78 Accepts]: Start accepts. Automaton has 32607 states and 45294 transitions. Word has length 122 [2021-11-05 18:10:27,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:10:27,918 INFO L470 AbstractCegarLoop]: Abstraction has 32607 states and 45294 transitions. [2021-11-05 18:10:27,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 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) [2021-11-05 18:10:27,919 INFO L276 IsEmpty]: Start isEmpty. Operand 32607 states and 45294 transitions. [2021-11-05 18:10:27,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-05 18:10:27,924 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:10:27,924 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, 1] [2021-11-05 18:10:27,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 18:10:27,925 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting usb_serial_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 18:10:27,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:10:27,926 INFO L85 PathProgramCache]: Analyzing trace with hash -337432058, now seen corresponding path program 1 times [2021-11-05 18:10:27,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:10:27,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603402256] [2021-11-05 18:10:27,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:10:27,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:10:28,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:10:28,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:10:28,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:10:28,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603402256] [2021-11-05 18:10:28,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603402256] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:10:28,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:10:28,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 18:10:28,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304218871] [2021-11-05 18:10:28,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:10:28,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:10:28,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:10:28,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:10:28,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:10:28,375 INFO L87 Difference]: Start difference. First operand 32607 states and 45294 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:10:29,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:10:29,913 INFO L93 Difference]: Finished difference Result 95537 states and 133950 transitions. [2021-11-05 18:10:29,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:10:29,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2021-11-05 18:10:29,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:10:30,333 INFO L225 Difference]: With dead ends: 95537 [2021-11-05 18:10:30,333 INFO L226 Difference]: Without dead ends: 63014 [2021-11-05 18:10:30,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.04ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:10:30,512 INFO L933 BasicCegarLoop]: 4376 mSDtfsCounter, 3438 mSDsluCounter, 3372 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 150.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3438 SdHoareTripleChecker+Valid, 7748 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.71ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 175.64ms IncrementalHoareTripleChecker+Time [2021-11-05 18:10:30,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3438 Valid, 7748 Invalid, 38 Unknown, 0 Unchecked, 12.71ms Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 175.64ms Time] [2021-11-05 18:10:30,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63014 states. [2021-11-05 18:10:32,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63014 to 62879. [2021-11-05 18:10:32,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62879 states, 59036 states have (on average 1.3703164171014297) internal successors, (80898), 59254 states have internal predecessors, (80898), 2752 states have call successors, (2752), 1064 states have call predecessors, (2752), 1080 states have return successors, (4960), 2616 states have call predecessors, (4960), 2752 states have call successors, (4960) [2021-11-05 18:10:33,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62879 states to 62879 states and 88610 transitions. [2021-11-05 18:10:33,407 INFO L78 Accepts]: Start accepts. Automaton has 62879 states and 88610 transitions. Word has length 126 [2021-11-05 18:10:33,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:10:33,407 INFO L470 AbstractCegarLoop]: Abstraction has 62879 states and 88610 transitions. [2021-11-05 18:10:33,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:10:33,408 INFO L276 IsEmpty]: Start isEmpty. Operand 62879 states and 88610 transitions. [2021-11-05 18:10:33,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-05 18:10:33,421 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:10:33,422 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:10:33,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 18:10:33,422 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting usb_serial_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 18:10:33,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:10:33,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1482483944, now seen corresponding path program 1 times [2021-11-05 18:10:33,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:10:33,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723354094] [2021-11-05 18:10:33,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:10:33,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:10:33,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:10:33,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-05 18:10:34,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:10:34,022 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:10:34,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:10:34,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723354094] [2021-11-05 18:10:34,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723354094] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:10:34,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:10:34,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 18:10:34,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963010095] [2021-11-05 18:10:34,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:10:34,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 18:10:34,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:10:34,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 18:10:34,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 18:10:34,025 INFO L87 Difference]: Start difference. First operand 62879 states and 88610 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 18:10:36,148 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 [] [2021-11-05 18:10:38,434 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:10:43,960 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:10:53,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:10:53,775 INFO L93 Difference]: Finished difference Result 197277 states and 279238 transitions. [2021-11-05 18:10:53,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 18:10:53,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 167 [2021-11-05 18:10:53,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:10:54,684 INFO L225 Difference]: With dead ends: 197277 [2021-11-05 18:10:54,684 INFO L226 Difference]: Without dead ends: 134482 [2021-11-05 18:10:54,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.09ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:10:54,870 INFO L933 BasicCegarLoop]: 4940 mSDtfsCounter, 4077 mSDsluCounter, 5590 mSDsCounter, 0 mSdLazyCounter, 2692 mSolverCounterSat, 299 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15485.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4110 SdHoareTripleChecker+Valid, 10530 SdHoareTripleChecker+Invalid, 2994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.69ms SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 2692 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16504.13ms IncrementalHoareTripleChecker+Time [2021-11-05 18:10:54,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4110 Valid, 10530 Invalid, 2994 Unknown, 0 Unchecked, 37.69ms Time], IncrementalHoareTripleChecker [299 Valid, 2692 Invalid, 3 Unknown, 0 Unchecked, 16504.13ms Time] [2021-11-05 18:10:54,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134482 states. [2021-11-05 18:10:58,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134482 to 130827. [2021-11-05 18:10:58,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130827 states, 122496 states have (on average 1.3660364420062696) internal successors, (167334), 122954 states have internal predecessors, (167334), 5568 states have call successors, (5568), 2128 states have call predecessors, (5568), 2752 states have return successors, (12384), 5888 states have call predecessors, (12384), 5568 states have call successors, (12384) [2021-11-05 18:11:00,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130827 states to 130827 states and 185286 transitions. [2021-11-05 18:11:00,161 INFO L78 Accepts]: Start accepts. Automaton has 130827 states and 185286 transitions. Word has length 167 [2021-11-05 18:11:00,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:11:00,162 INFO L470 AbstractCegarLoop]: Abstraction has 130827 states and 185286 transitions. [2021-11-05 18:11:00,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 18:11:00,163 INFO L276 IsEmpty]: Start isEmpty. Operand 130827 states and 185286 transitions. [2021-11-05 18:11:00,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-05 18:11:00,171 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:11:00,171 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:11:00,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 18:11:00,172 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting usb_serial_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 18:11:00,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:11:00,172 INFO L85 PathProgramCache]: Analyzing trace with hash -732853996, now seen corresponding path program 1 times [2021-11-05 18:11:00,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:11:00,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498236229] [2021-11-05 18:11:00,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:11:00,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:11:00,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:11:00,871 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:11:00,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:11:00,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498236229] [2021-11-05 18:11:00,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498236229] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:11:00,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:11:00,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 18:11:00,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354449345] [2021-11-05 18:11:00,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:11:00,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:11:00,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:11:00,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:11:00,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:11:00,874 INFO L87 Difference]: Start difference. First operand 130827 states and 185286 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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) [2021-11-05 18:11:03,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:11:03,561 INFO L93 Difference]: Finished difference Result 198137 states and 280392 transitions. [2021-11-05 18:11:03,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:11:03,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 165 [2021-11-05 18:11:03,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:11:03,913 INFO L225 Difference]: With dead ends: 198137 [2021-11-05 18:11:03,913 INFO L226 Difference]: Without dead ends: 67394 [2021-11-05 18:11:04,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.95ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:11:04,514 INFO L933 BasicCegarLoop]: 3465 mSDtfsCounter, 3462 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 126.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3462 SdHoareTripleChecker+Valid, 3467 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.89ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 146.30ms IncrementalHoareTripleChecker+Time [2021-11-05 18:11:04,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3462 Valid, 3467 Invalid, 4 Unknown, 0 Unchecked, 4.89ms Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 146.30ms Time] [2021-11-05 18:11:04,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67394 states. [2021-11-05 18:11:06,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67394 to 65244. [2021-11-05 18:11:06,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65244 states, 61062 states have (on average 1.3665127247715436) internal successors, (83442), 61296 states have internal predecessors, (83442), 2790 states have call successors, (2790), 1069 states have call predecessors, (2790), 1381 states have return successors, (6198), 2950 states have call predecessors, (6198), 2790 states have call successors, (6198) [2021-11-05 18:11:06,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65244 states to 65244 states and 92430 transitions. [2021-11-05 18:11:06,917 INFO L78 Accepts]: Start accepts. Automaton has 65244 states and 92430 transitions. Word has length 165 [2021-11-05 18:11:06,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:11:06,918 INFO L470 AbstractCegarLoop]: Abstraction has 65244 states and 92430 transitions. [2021-11-05 18:11:06,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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) [2021-11-05 18:11:06,918 INFO L276 IsEmpty]: Start isEmpty. Operand 65244 states and 92430 transitions. [2021-11-05 18:11:06,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-05 18:11:06,941 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:11:06,941 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:11:06,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 18:11:06,942 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 18:11:06,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:11:06,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1866473330, now seen corresponding path program 1 times [2021-11-05 18:11:06,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:11:06,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171791888] [2021-11-05 18:11:06,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:11:06,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:11:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:11:07,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:11:07,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:11:07,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171791888] [2021-11-05 18:11:07,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171791888] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:11:07,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:11:07,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 18:11:07,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548506458] [2021-11-05 18:11:07,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:11:07,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 18:11:07,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:11:07,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 18:11:07,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 18:11:07,374 INFO L87 Difference]: Start difference. First operand 65244 states and 92430 transitions. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 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) [2021-11-05 18:11:09,499 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 [] [2021-11-05 18:11:11,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:11:11,351 INFO L93 Difference]: Finished difference Result 130098 states and 184338 transitions. [2021-11-05 18:11:11,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 18:11:11,352 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 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 178 [2021-11-05 18:11:11,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:11:11,676 INFO L225 Difference]: With dead ends: 130098 [2021-11-05 18:11:11,676 INFO L226 Difference]: Without dead ends: 65255 [2021-11-05 18:11:11,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.36ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:11:11,912 INFO L933 BasicCegarLoop]: 3466 mSDtfsCounter, 7 mSDsluCounter, 6922 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2131.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 10388 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.48ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2244.01ms IncrementalHoareTripleChecker+Time [2021-11-05 18:11:11,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 10388 Invalid, 11 Unknown, 0 Unchecked, 7.48ms Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 1 Unknown, 0 Unchecked, 2244.01ms Time] [2021-11-05 18:11:12,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65255 states. [2021-11-05 18:11:13,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65255 to 65246. [2021-11-05 18:11:13,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65246 states, 61064 states have (on average 1.3664352155115944) internal successors, (83440), 61298 states have internal predecessors, (83440), 2790 states have call successors, (2790), 1069 states have call predecessors, (2790), 1381 states have return successors, (6198), 2950 states have call predecessors, (6198), 2790 states have call successors, (6198) [2021-11-05 18:11:13,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65246 states to 65246 states and 92428 transitions. [2021-11-05 18:11:13,930 INFO L78 Accepts]: Start accepts. Automaton has 65246 states and 92428 transitions. Word has length 178 [2021-11-05 18:11:13,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:11:13,931 INFO L470 AbstractCegarLoop]: Abstraction has 65246 states and 92428 transitions. [2021-11-05 18:11:13,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 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) [2021-11-05 18:11:13,931 INFO L276 IsEmpty]: Start isEmpty. Operand 65246 states and 92428 transitions. [2021-11-05 18:11:13,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-05 18:11:13,950 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:11:13,950 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:11:13,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 18:11:13,951 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 18:11:13,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:11:13,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1973694521, now seen corresponding path program 1 times [2021-11-05 18:11:13,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:11:13,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249443318] [2021-11-05 18:11:13,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:11:13,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:11:14,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:11:14,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 18:11:14,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:11:14,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249443318] [2021-11-05 18:11:14,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249443318] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:11:14,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:11:14,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 18:11:14,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233981874] [2021-11-05 18:11:14,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:11:14,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 18:11:14,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:11:14,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 18:11:14,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:11:14,432 INFO L87 Difference]: Start difference. First operand 65246 states and 92428 transitions. Second operand has 5 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 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) [2021-11-05 18:11:16,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:11:16,662 INFO L93 Difference]: Finished difference Result 130181 states and 184410 transitions. [2021-11-05 18:11:16,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 18:11:16,662 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 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 182 [2021-11-05 18:11:16,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:11:17,178 INFO L225 Difference]: With dead ends: 130181 [2021-11-05 18:11:17,178 INFO L226 Difference]: Without dead ends: 65344 [2021-11-05 18:11:17,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 24.05ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-05 18:11:17,330 INFO L933 BasicCegarLoop]: 3451 mSDtfsCounter, 1762 mSDsluCounter, 6168 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 171.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1805 SdHoareTripleChecker+Valid, 9619 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.47ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 200.28ms IncrementalHoareTripleChecker+Time [2021-11-05 18:11:17,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1805 Valid, 9619 Invalid, 127 Unknown, 0 Unchecked, 10.47ms Time], IncrementalHoareTripleChecker [32 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 200.28ms Time] [2021-11-05 18:11:17,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65344 states. [2021-11-05 18:11:18,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65344 to 65246. [2021-11-05 18:11:18,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65246 states, 61064 states have (on average 1.3653871348093802) internal successors, (83376), 61298 states have internal predecessors, (83376), 2790 states have call successors, (2790), 1069 states have call predecessors, (2790), 1381 states have return successors, (6198), 2950 states have call predecessors, (6198), 2790 states have call successors, (6198) [2021-11-05 18:11:19,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65246 states to 65246 states and 92364 transitions. [2021-11-05 18:11:19,049 INFO L78 Accepts]: Start accepts. Automaton has 65246 states and 92364 transitions. Word has length 182 [2021-11-05 18:11:19,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:11:19,050 INFO L470 AbstractCegarLoop]: Abstraction has 65246 states and 92364 transitions. [2021-11-05 18:11:19,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 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) [2021-11-05 18:11:19,050 INFO L276 IsEmpty]: Start isEmpty. Operand 65246 states and 92364 transitions. [2021-11-05 18:11:19,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-05 18:11:19,067 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:11:19,068 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:11:19,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-05 18:11:19,068 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 18:11:19,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:11:19,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1093218855, now seen corresponding path program 1 times [2021-11-05 18:11:19,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:11:19,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294166390] [2021-11-05 18:11:19,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:11:19,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:11:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:11:19,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 18:11:19,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:11:19,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294166390] [2021-11-05 18:11:19,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294166390] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:11:19,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:11:19,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 18:11:19,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530508128] [2021-11-05 18:11:19,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:11:19,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 18:11:19,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:11:19,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 18:11:19,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-05 18:11:19,591 INFO L87 Difference]: Start difference. First operand 65246 states and 92364 transitions. Second operand has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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) [2021-11-05 18:11:22,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:11:22,207 INFO L93 Difference]: Finished difference Result 142160 states and 202742 transitions. [2021-11-05 18:11:22,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 18:11:22,207 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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 183 [2021-11-05 18:11:22,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:11:22,480 INFO L225 Difference]: With dead ends: 142160 [2021-11-05 18:11:22,481 INFO L226 Difference]: Without dead ends: 77323 [2021-11-05 18:11:22,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 40.56ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-05 18:11:22,668 INFO L933 BasicCegarLoop]: 4381 mSDtfsCounter, 2213 mSDsluCounter, 13028 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 308.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2252 SdHoareTripleChecker+Valid, 17409 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.43ms SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 359.57ms IncrementalHoareTripleChecker+Time [2021-11-05 18:11:22,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2252 Valid, 17409 Invalid, 309 Unknown, 0 Unchecked, 17.43ms Time], IncrementalHoareTripleChecker [123 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 359.57ms Time] [2021-11-05 18:11:22,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77323 states.