./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash bf654a6a1eca45ac77a809162568fb8018795c05fa9eb6946186269d2e2c9c25 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 07:23:43,732 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 07:23:43,735 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 07:23:43,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 07:23:43,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 07:23:43,804 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 07:23:43,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 07:23:43,810 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 07:23:43,812 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 07:23:43,815 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 07:23:43,816 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 07:23:43,817 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 07:23:43,817 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 07:23:43,819 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 07:23:43,820 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 07:23:43,823 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 07:23:43,825 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 07:23:43,825 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 07:23:43,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 07:23:43,832 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 07:23:43,833 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 07:23:43,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 07:23:43,835 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 07:23:43,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 07:23:43,844 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 07:23:43,844 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 07:23:43,845 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 07:23:43,846 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 07:23:43,846 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 07:23:43,847 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 07:23:43,847 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 07:23:43,848 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 07:23:43,849 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 07:23:43,850 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 07:23:43,852 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 07:23:43,852 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 07:23:43,853 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 07:23:43,853 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 07:23:43,853 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 07:23:43,854 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 07:23:43,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 07:23:43,855 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 07:23:43,881 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 07:23:43,882 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 07:23:43,882 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 07:23:43,882 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 07:23:43,883 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 07:23:43,884 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 07:23:43,884 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 07:23:43,884 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 07:23:43,884 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 07:23:43,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 07:23:43,885 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 07:23:43,885 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 07:23:43,885 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 07:23:43,885 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 07:23:43,885 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 07:23:43,886 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 07:23:43,886 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 07:23:43,886 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 07:23:43,886 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 07:23:43,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 07:23:43,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 07:23:43,887 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 07:23:43,887 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 07:23:43,887 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 07:23:43,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 07:23:43,887 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 07:23:43,887 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 07:23:43,889 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 07:23:43,889 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 07:23:43,889 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf654a6a1eca45ac77a809162568fb8018795c05fa9eb6946186269d2e2c9c25 [2021-11-04 07:23:44,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 07:23:44,146 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 07:23:44,149 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 07:23:44,154 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 07:23:44,155 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 07:23:44,156 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-11-04 07:23:44,200 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e4b1edcb/7d74ee0ef9054404b1000e92a638ecb5/FLAG4696b9917 [2021-11-04 07:23:44,837 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 07:23:44,837 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-11-04 07:23:44,892 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e4b1edcb/7d74ee0ef9054404b1000e92a638ecb5/FLAG4696b9917 [2021-11-04 07:23:45,249 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e4b1edcb/7d74ee0ef9054404b1000e92a638ecb5 [2021-11-04 07:23:45,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 07:23:45,252 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 07:23:45,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 07:23:45,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 07:23:45,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 07:23:45,258 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 07:23:45" (1/1) ... [2021-11-04 07:23:45,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c954522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:23:45, skipping insertion in model container [2021-11-04 07:23:45,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 07:23:45" (1/1) ... [2021-11-04 07:23:45,276 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 07:23:45,365 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 07:23:47,785 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[323188,323201] [2021-11-04 07:23:47,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 07:23:48,052 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 07:23:48,410 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[323188,323201] [2021-11-04 07:23:48,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 07:23:48,553 INFO L208 MainTranslator]: Completed translation [2021-11-04 07:23:48,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:23:48 WrapperNode [2021-11-04 07:23:48,554 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 07:23:48,556 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 07:23:48,556 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 07:23:48,557 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 07:23:48,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:23:48" (1/1) ... [2021-11-04 07:23:48,688 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:23:48" (1/1) ... [2021-11-04 07:23:49,128 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 07:23:49,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 07:23:49,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 07:23:49,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 07:23:49,136 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:23:48" (1/1) ... [2021-11-04 07:23:49,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:23:48" (1/1) ... [2021-11-04 07:23:49,212 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:23:48" (1/1) ... [2021-11-04 07:23:49,214 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:23:48" (1/1) ... [2021-11-04 07:23:49,489 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:23:48" (1/1) ... [2021-11-04 07:23:49,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:23:48" (1/1) ... [2021-11-04 07:23:49,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:23:48" (1/1) ... [2021-11-04 07:23:49,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 07:23:49,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 07:23:49,668 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 07:23:49,668 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 07:23:49,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:23:48" (1/1) ... [2021-11-04 07:23:49,689 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 07:23:49,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 07:23:49,737 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) [2021-11-04 07:23:49,763 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 [2021-11-04 07:23:49,783 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_dtr_rts [2021-11-04 07:23:49,784 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_dtr_rts [2021-11-04 07:23:49,784 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_remove [2021-11-04 07:23:49,784 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_remove [2021-11-04 07:23:49,784 INFO L130 BoogieDeclarations]: Found specification of procedure serial_chars_in_buffer [2021-11-04 07:23:49,784 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_chars_in_buffer [2021-11-04 07:23:49,784 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_activate [2021-11-04 07:23:49,784 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_activate [2021-11-04 07:23:49,784 INFO L130 BoogieDeclarations]: Found specification of procedure serial_ioctl [2021-11-04 07:23:49,785 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_ioctl [2021-11-04 07:23:49,785 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write_room [2021-11-04 07:23:49,785 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write_room [2021-11-04 07:23:49,785 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-04 07:23:49,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-04 07:23:49,785 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_probe [2021-11-04 07:23:49,785 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_probe [2021-11-04 07:23:49,785 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-04 07:23:49,786 INFO L130 BoogieDeclarations]: Found specification of procedure serial_get_icount [2021-11-04 07:23:49,786 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_get_icount [2021-11-04 07:23:49,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 07:23:49,786 INFO L130 BoogieDeclarations]: Found specification of procedure serial_cleanup [2021-11-04 07:23:49,786 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_cleanup [2021-11-04 07:23:49,786 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_carrier_raised [2021-11-04 07:23:49,786 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_carrier_raised [2021-11-04 07:23:49,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 07:23:49,787 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2021-11-04 07:23:49,787 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2021-11-04 07:23:49,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 07:23:49,787 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_reset_resume [2021-11-04 07:23:49,787 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_reset_resume [2021-11-04 07:23:49,787 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_read_bulk_callback [2021-11-04 07:23:49,787 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_read_bulk_callback [2021-11-04 07:23:49,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 07:23:49,788 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_shutdown [2021-11-04 07:23:49,788 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_shutdown [2021-11-04 07:23:49,788 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2021-11-04 07:23:49,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2021-11-04 07:23:49,788 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-04 07:23:49,788 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-04 07:23:49,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 07:23:49,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 07:23:49,789 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-04 07:23:49,789 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-04 07:23:49,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-04 07:23:49,789 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-04 07:23:49,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-04 07:23:49,789 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_put [2021-11-04 07:23:49,789 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_put [2021-11-04 07:23:49,789 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_serial [2021-11-04 07:23:49,790 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_serial [2021-11-04 07:23:49,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 07:23:49,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 07:23:49,790 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_start [2021-11-04 07:23:49,790 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_start [2021-11-04 07:23:49,790 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-11-04 07:23:49,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-11-04 07:23:49,790 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-11-04 07:23:49,791 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-11-04 07:23:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 07:23:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 07:23:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write [2021-11-04 07:23:49,791 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write [2021-11-04 07:23:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2021-11-04 07:23:49,791 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2021-11-04 07:23:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 07:23:49,792 INFO L130 BoogieDeclarations]: Found specification of procedure serial_unthrottle [2021-11-04 07:23:49,792 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_unthrottle [2021-11-04 07:23:49,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 07:23:49,792 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-04 07:23:49,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-04 07:23:49,792 INFO L130 BoogieDeclarations]: Found specification of procedure serial_throttle [2021-11-04 07:23:49,792 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_throttle [2021-11-04 07:23:49,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 07:23:49,793 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-04 07:23:49,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-04 07:23:49,793 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmget [2021-11-04 07:23:49,793 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmget [2021-11-04 07:23:49,793 INFO L130 BoogieDeclarations]: Found specification of procedure serial_wait_until_sent [2021-11-04 07:23:49,793 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_wait_until_sent [2021-11-04 07:23:49,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 07:23:49,793 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2021-11-04 07:23:49,793 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2021-11-04 07:23:49,794 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2021-11-04 07:23:49,794 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2021-11-04 07:23:49,794 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmset [2021-11-04 07:23:49,794 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmset [2021-11-04 07:23:49,794 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write [2021-11-04 07:23:49,794 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write [2021-11-04 07:23:49,794 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-04 07:23:49,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-04 07:23:49,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 07:24:13,073 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 07:24:13,074 INFO L299 CfgBuilder]: Removed 2331 assume(true) statements. [2021-11-04 07:24:13,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 07:24:13 BoogieIcfgContainer [2021-11-04 07:24:13,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 07:24:13,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 07:24:13,082 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 07:24:13,084 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 07:24:13,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 07:23:45" (1/3) ... [2021-11-04 07:24:13,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73e6d9ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 07:24:13, skipping insertion in model container [2021-11-04 07:24:13,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:23:48" (2/3) ... [2021-11-04 07:24:13,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73e6d9ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 07:24:13, skipping insertion in model container [2021-11-04 07:24:13,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 07:24:13" (3/3) ... [2021-11-04 07:24:13,089 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-11-04 07:24:13,093 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 07:24:13,093 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 53 error locations. [2021-11-04 07:24:13,142 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 07:24:13,149 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 [2021-11-04 07:24:13,149 INFO L340 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2021-11-04 07:24:13,198 INFO L276 IsEmpty]: Start isEmpty. Operand has 2747 states, 2544 states have (on average 1.39937106918239) internal successors, (3560), 2606 states have internal predecessors, (3560), 112 states have call successors, (112), 37 states have call predecessors, (112), 37 states have return successors, (112), 105 states have call predecessors, (112), 112 states have call successors, (112) [2021-11-04 07:24:13,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-04 07:24:13,210 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:24:13,211 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 07:24:13,211 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting serial_port_activateErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-04 07:24:13,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:24:13,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1101246796, now seen corresponding path program 1 times [2021-11-04 07:24:13,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:24:13,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794648508] [2021-11-04 07:24:13,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:24:13,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:24:13,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:24:14,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 07:24:14,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:24:14,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794648508] [2021-11-04 07:24:14,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794648508] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:24:14,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:24:14,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 07:24:14,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270777354] [2021-11-04 07:24:14,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:24:14,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-04 07:24:14,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:24:14,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-04 07:24:14,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 07:24:14,091 INFO L87 Difference]: Start difference. First operand has 2747 states, 2544 states have (on average 1.39937106918239) internal successors, (3560), 2606 states have internal predecessors, (3560), 112 states have call successors, (112), 37 states have call predecessors, (112), 37 states have return successors, (112), 105 states have call predecessors, (112), 112 states have call successors, (112) Second operand has 2 states, 2 states have (on average 47.0) internal successors, (94), 2 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:24:16,233 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:24:28,671 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:24:46,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:24:46,750 INFO L93 Difference]: Finished difference Result 5490 states and 7662 transitions. [2021-11-04 07:24:46,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-04 07:24:46,753 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 47.0) internal successors, (94), 2 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-04 07:24:46,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:24:46,780 INFO L225 Difference]: With dead ends: 5490 [2021-11-04 07:24:46,781 INFO L226 Difference]: Without dead ends: 2732 [2021-11-04 07:24:46,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.04ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 07:24:46,804 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3424 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29641.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 3426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.38ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3424 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32042.68ms IncrementalHoareTripleChecker+Time [2021-11-04 07:24:46,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 235 Invalid, 3426 Unknown, 0 Unchecked, 35.38ms Time], IncrementalHoareTripleChecker [0 Valid, 3424 Invalid, 2 Unknown, 0 Unchecked, 32042.68ms Time] [2021-11-04 07:24:46,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2021-11-04 07:24:46,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 2732. [2021-11-04 07:24:46,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2732 states, 2530 states have (on average 1.3482213438735178) internal successors, (3411), 2591 states have internal predecessors, (3411), 112 states have call successors, (112), 37 states have call predecessors, (112), 37 states have return successors, (112), 105 states have call predecessors, (112), 112 states have call successors, (112) [2021-11-04 07:24:46,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2732 states to 2732 states and 3635 transitions. [2021-11-04 07:24:46,945 INFO L78 Accepts]: Start accepts. Automaton has 2732 states and 3635 transitions. Word has length 95 [2021-11-04 07:24:46,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:24:46,946 INFO L470 AbstractCegarLoop]: Abstraction has 2732 states and 3635 transitions. [2021-11-04 07:24:46,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 47.0) internal successors, (94), 2 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:24:46,946 INFO L276 IsEmpty]: Start isEmpty. Operand 2732 states and 3635 transitions. [2021-11-04 07:24:46,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-04 07:24:46,952 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:24:46,952 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 07:24:46,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 07:24:46,954 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting serial_port_activateErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-04 07:24:46,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:24:46,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1092627974, now seen corresponding path program 1 times [2021-11-04 07:24:46,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:24:46,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983452134] [2021-11-04 07:24:46,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:24:46,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:24:47,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:24:47,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 07:24:47,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:24:47,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983452134] [2021-11-04 07:24:47,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983452134] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:24:47,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:24:47,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 07:24:47,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804857016] [2021-11-04 07:24:47,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:24:47,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:24:47,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:24:47,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:24:47,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:24:47,516 INFO L87 Difference]: Start difference. First operand 2732 states and 3635 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:24:49,697 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:25:09,963 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:25:44,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:25:44,287 INFO L93 Difference]: Finished difference Result 5420 states and 7229 transitions. [2021-11-04 07:25:44,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 07:25:44,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-04 07:25:44,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:25:44,301 INFO L225 Difference]: With dead ends: 5420 [2021-11-04 07:25:44,301 INFO L226 Difference]: Without dead ends: 2736 [2021-11-04 07:25:44,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.75ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:25:44,310 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 0 mSDsluCounter, 3594 mSDsCounter, 0 mSdLazyCounter, 6814 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53640.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 6822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 69.23ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 6814 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56188.28ms IncrementalHoareTripleChecker+Time [2021-11-04 07:25:44,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 448 Invalid, 6822 Unknown, 0 Unchecked, 69.23ms Time], IncrementalHoareTripleChecker [6 Valid, 6814 Invalid, 2 Unknown, 0 Unchecked, 56188.28ms Time] [2021-11-04 07:25:44,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2736 states. [2021-11-04 07:25:44,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2736 to 2736. [2021-11-04 07:25:44,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2736 states, 2534 states have (on average 1.3476716653512233) internal successors, (3415), 2595 states have internal predecessors, (3415), 112 states have call successors, (112), 37 states have call predecessors, (112), 37 states have return successors, (112), 105 states have call predecessors, (112), 112 states have call successors, (112) [2021-11-04 07:25:44,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2736 states to 2736 states and 3639 transitions. [2021-11-04 07:25:44,356 INFO L78 Accepts]: Start accepts. Automaton has 2736 states and 3639 transitions. Word has length 95 [2021-11-04 07:25:44,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:25:44,357 INFO L470 AbstractCegarLoop]: Abstraction has 2736 states and 3639 transitions. [2021-11-04 07:25:44,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:25:44,357 INFO L276 IsEmpty]: Start isEmpty. Operand 2736 states and 3639 transitions. [2021-11-04 07:25:44,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-04 07:25:44,358 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:25:44,358 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 07:25:44,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 07:25:44,358 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting serial_port_activateErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-04 07:25:44,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:25:44,359 INFO L85 PathProgramCache]: Analyzing trace with hash -605767352, now seen corresponding path program 1 times [2021-11-04 07:25:44,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:25:44,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083754625] [2021-11-04 07:25:44,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:25:44,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:25:44,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:25:44,797 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 07:25:44,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:25:44,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083754625] [2021-11-04 07:25:44,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083754625] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:25:44,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:25:44,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 07:25:44,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943622242] [2021-11-04 07:25:44,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:25:44,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:25:44,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:25:44,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:25:44,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:25:44,799 INFO L87 Difference]: Start difference. First operand 2736 states and 3639 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:25:46,895 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:26:09,342 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:26:46,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:26:46,362 INFO L93 Difference]: Finished difference Result 5429 states and 7242 transitions. [2021-11-04 07:26:46,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 07:26:46,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-04 07:26:46,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:26:46,379 INFO L225 Difference]: With dead ends: 5429 [2021-11-04 07:26:46,379 INFO L226 Difference]: Without dead ends: 2745 [2021-11-04 07:26:46,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.21ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:26:46,396 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 0 mSDsluCounter, 3594 mSDsCounter, 0 mSdLazyCounter, 6809 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58473.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 6827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 52.96ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 6809 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61134.45ms IncrementalHoareTripleChecker+Time [2021-11-04 07:26:46,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 448 Invalid, 6827 Unknown, 0 Unchecked, 52.96ms Time], IncrementalHoareTripleChecker [16 Valid, 6809 Invalid, 2 Unknown, 0 Unchecked, 61134.45ms Time] [2021-11-04 07:26:46,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2745 states. [2021-11-04 07:26:46,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2745 to 2745. [2021-11-04 07:26:46,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2745 states, 2543 states have (on average 1.3464412111679118) internal successors, (3424), 2604 states have internal predecessors, (3424), 112 states have call successors, (112), 37 states have call predecessors, (112), 37 states have return successors, (112), 105 states have call predecessors, (112), 112 states have call successors, (112) [2021-11-04 07:26:46,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2745 states to 2745 states and 3648 transitions. [2021-11-04 07:26:46,462 INFO L78 Accepts]: Start accepts. Automaton has 2745 states and 3648 transitions. Word has length 98 [2021-11-04 07:26:46,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:26:46,462 INFO L470 AbstractCegarLoop]: Abstraction has 2745 states and 3648 transitions. [2021-11-04 07:26:46,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:26:46,463 INFO L276 IsEmpty]: Start isEmpty. Operand 2745 states and 3648 transitions. [2021-11-04 07:26:46,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-04 07:26:46,467 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:26:46,467 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 07:26:46,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 07:26:46,471 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting serial_port_activateErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-04 07:26:46,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:26:46,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1881618578, now seen corresponding path program 1 times [2021-11-04 07:26:46,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:26:46,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160683989] [2021-11-04 07:26:46,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:26:46,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:26:46,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:26:46,970 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-04 07:26:46,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:26:46,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160683989] [2021-11-04 07:26:46,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160683989] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:26:46,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:26:46,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 07:26:46,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308793820] [2021-11-04 07:26:46,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:26:46,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:26:46,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:26:46,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:26:46,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:26:46,973 INFO L87 Difference]: Start difference. First operand 2745 states and 3648 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:26:49,063 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:27:00,556 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:27:49,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:27:49,038 INFO L93 Difference]: Finished difference Result 7860 states and 10560 transitions. [2021-11-04 07:27:49,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 07:27:49,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-11-04 07:27:49,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:27:49,069 INFO L225 Difference]: With dead ends: 7860 [2021-11-04 07:27:49,070 INFO L226 Difference]: Without dead ends: 5211 [2021-11-04 07:27:49,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.11ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:27:49,083 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 3327 mSDsluCounter, 3632 mSDsCounter, 0 mSdLazyCounter, 6830 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58721.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3327 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 6835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 79.30ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6830 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61358.14ms IncrementalHoareTripleChecker+Time [2021-11-04 07:27:49,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3327 Valid, 626 Invalid, 6835 Unknown, 0 Unchecked, 79.30ms Time], IncrementalHoareTripleChecker [3 Valid, 6830 Invalid, 2 Unknown, 0 Unchecked, 61358.14ms Time] [2021-11-04 07:27:49,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5211 states. [2021-11-04 07:27:49,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5211 to 5075. [2021-11-04 07:27:49,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5075 states, 4733 states have (on average 1.3557997042045213) internal successors, (6417), 4801 states have internal predecessors, (6417), 215 states have call successors, (215), 74 states have call predecessors, (215), 74 states have return successors, (292), 203 states have call predecessors, (292), 215 states have call successors, (292) [2021-11-04 07:27:49,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5075 states to 5075 states and 6924 transitions. [2021-11-04 07:27:49,187 INFO L78 Accepts]: Start accepts. Automaton has 5075 states and 6924 transitions. Word has length 107 [2021-11-04 07:27:49,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:27:49,187 INFO L470 AbstractCegarLoop]: Abstraction has 5075 states and 6924 transitions. [2021-11-04 07:27:49,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:27:49,188 INFO L276 IsEmpty]: Start isEmpty. Operand 5075 states and 6924 transitions. [2021-11-04 07:27:49,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-04 07:27:49,189 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:27:49,189 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] [2021-11-04 07:27:49,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 07:27:49,190 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-04 07:27:49,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:27:49,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1468383263, now seen corresponding path program 1 times [2021-11-04 07:27:49,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:27:49,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768786517] [2021-11-04 07:27:49,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:27:49,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:27:49,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:27:49,565 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-04 07:27:49,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:27:49,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768786517] [2021-11-04 07:27:49,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768786517] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:27:49,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:27:49,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 07:27:49,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15524170] [2021-11-04 07:27:49,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:27:49,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:27:49,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:27:49,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:27:49,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:27:49,567 INFO L87 Difference]: Start difference. First operand 5075 states and 6924 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:27:51,671 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:27:59,026 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:28:18,826 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:28:59,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:28:59,423 INFO L93 Difference]: Finished difference Result 13869 states and 18913 transitions. [2021-11-04 07:28:59,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 07:28:59,423 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 [2021-11-04 07:28:59,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:28:59,462 INFO L225 Difference]: With dead ends: 13869 [2021-11-04 07:28:59,463 INFO L226 Difference]: Without dead ends: 8890 [2021-11-04 07:28:59,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.35ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:28:59,483 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 2668 mSDsluCounter, 3535 mSDsCounter, 0 mSdLazyCounter, 7364 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65773.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2668 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 7367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 56.13ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7364 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69152.76ms IncrementalHoareTripleChecker+Time [2021-11-04 07:28:59,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2668 Valid, 551 Invalid, 7367 Unknown, 0 Unchecked, 56.13ms Time], IncrementalHoareTripleChecker [1 Valid, 7364 Invalid, 2 Unknown, 0 Unchecked, 69152.76ms Time] [2021-11-04 07:28:59,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8890 states. [2021-11-04 07:28:59,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8890 to 8735. [2021-11-04 07:28:59,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8735 states, 8181 states have (on average 1.3576579880210242) internal successors, (11107), 8263 states have internal predecessors, (11107), 362 states have call successors, (362), 139 states have call predecessors, (362), 139 states have return successors, (500), 339 states have call predecessors, (500), 362 states have call successors, (500) [2021-11-04 07:28:59,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8735 states to 8735 states and 11969 transitions. [2021-11-04 07:28:59,759 INFO L78 Accepts]: Start accepts. Automaton has 8735 states and 11969 transitions. Word has length 110 [2021-11-04 07:28:59,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:28:59,761 INFO L470 AbstractCegarLoop]: Abstraction has 8735 states and 11969 transitions. [2021-11-04 07:28:59,761 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) [2021-11-04 07:28:59,762 INFO L276 IsEmpty]: Start isEmpty. Operand 8735 states and 11969 transitions. [2021-11-04 07:28:59,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-04 07:28:59,764 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:28:59,764 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 07:28:59,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 07:28:59,764 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting usb_serial_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-04 07:28:59,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:28:59,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1247001365, now seen corresponding path program 1 times [2021-11-04 07:28:59,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:28:59,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320503855] [2021-11-04 07:28:59,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:28:59,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:28:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:29:00,165 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-04 07:29:00,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:29:00,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320503855] [2021-11-04 07:29:00,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320503855] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:29:00,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:29:00,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 07:29:00,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680846078] [2021-11-04 07:29:00,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:29:00,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:29:00,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:29:00,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:29:00,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:29:00,166 INFO L87 Difference]: Start difference. First operand 8735 states and 11969 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:29:02,274 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:29:09,006 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:29:26,607 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:29:41,345 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:30:25,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:30:25,902 INFO L93 Difference]: Finished difference Result 25382 states and 35012 transitions. [2021-11-04 07:30:25,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 07:30:25,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-04 07:30:25,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:30:25,981 INFO L225 Difference]: With dead ends: 25382 [2021-11-04 07:30:25,981 INFO L226 Difference]: Without dead ends: 16743 [2021-11-04 07:30:26,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.32ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:30:26,024 INFO L933 BasicCegarLoop]: 455 mSDtfsCounter, 3318 mSDsluCounter, 3597 mSDsCounter, 0 mSdLazyCounter, 8997 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 80843.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3318 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 9006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 80.50ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 8997 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 84851.52ms IncrementalHoareTripleChecker+Time [2021-11-04 07:30:26,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3318 Valid, 679 Invalid, 9006 Unknown, 0 Unchecked, 80.50ms Time], IncrementalHoareTripleChecker [7 Valid, 8997 Invalid, 2 Unknown, 0 Unchecked, 84851.52ms Time] [2021-11-04 07:30:26,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16743 states. [2021-11-04 07:30:26,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16743 to 16529. [2021-11-04 07:30:26,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16529 states, 15518 states have (on average 1.3611290114705503) internal successors, (21122), 15622 states have internal predecessors, (21122), 688 states have call successors, (688), 266 states have call predecessors, (688), 270 states have return successors, (1148), 654 states have call predecessors, (1148), 688 states have call successors, (1148) [2021-11-04 07:30:26,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16529 states to 16529 states and 22958 transitions. [2021-11-04 07:30:26,414 INFO L78 Accepts]: Start accepts. Automaton has 16529 states and 22958 transitions. Word has length 115 [2021-11-04 07:30:26,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:30:26,414 INFO L470 AbstractCegarLoop]: Abstraction has 16529 states and 22958 transitions. [2021-11-04 07:30:26,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:30:26,415 INFO L276 IsEmpty]: Start isEmpty. Operand 16529 states and 22958 transitions. [2021-11-04 07:30:26,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-04 07:30:26,416 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:30:26,416 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 07:30:26,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-04 07:30:26,417 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-04 07:30:26,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:30:26,417 INFO L85 PathProgramCache]: Analyzing trace with hash -938770269, now seen corresponding path program 1 times [2021-11-04 07:30:26,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:30:26,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700643882] [2021-11-04 07:30:26,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:30:26,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:30:26,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:30:26,906 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-04 07:30:26,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:30:26,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700643882] [2021-11-04 07:30:26,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700643882] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:30:26,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:30:26,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 07:30:26,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100350636] [2021-11-04 07:30:26,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:30:26,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:30:26,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:30:26,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:30:26,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:30:26,907 INFO L87 Difference]: Start difference. First operand 16529 states and 22958 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:30:29,020 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:30:35,714 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 [] [2021-11-04 07:31:48,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:31:48,480 INFO L93 Difference]: Finished difference Result 48889 states and 68064 transitions. [2021-11-04 07:31:48,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 07:31:48,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-04 07:31:48,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:31:48,601 INFO L225 Difference]: With dead ends: 48889 [2021-11-04 07:31:48,601 INFO L226 Difference]: Without dead ends: 32456 [2021-11-04 07:31:48,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.87ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:31:48,661 INFO L933 BasicCegarLoop]: 421 mSDtfsCounter, 3250 mSDsluCounter, 3604 mSDsCounter, 0 mSdLazyCounter, 9042 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 76346.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3250 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 9047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 58.98ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9042 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 80533.48ms IncrementalHoareTripleChecker+Time [2021-11-04 07:31:48,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3250 Valid, 645 Invalid, 9047 Unknown, 0 Unchecked, 58.98ms Time], IncrementalHoareTripleChecker [3 Valid, 9042 Invalid, 2 Unknown, 0 Unchecked, 80533.48ms Time] [2021-11-04 07:31:48,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32456 states. [2021-11-04 07:31:49,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32456 to 32372. [2021-11-04 07:31:49,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32372 states, 30403 states have (on average 1.364207479525047) internal successors, (41476), 30559 states have internal predecessors, (41476), 1376 states have call successors, (1376), 532 states have call predecessors, (1376), 540 states have return successors, (2296), 1308 states have call predecessors, (2296), 1376 states have call successors, (2296) [2021-11-04 07:31:49,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32372 states to 32372 states and 45148 transitions. [2021-11-04 07:31:49,487 INFO L78 Accepts]: Start accepts. Automaton has 32372 states and 45148 transitions. Word has length 115 [2021-11-04 07:31:49,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:31:49,488 INFO L470 AbstractCegarLoop]: Abstraction has 32372 states and 45148 transitions. [2021-11-04 07:31:49,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:31:49,488 INFO L276 IsEmpty]: Start isEmpty. Operand 32372 states and 45148 transitions. [2021-11-04 07:31:49,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-04 07:31:49,490 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:31:49,490 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] [2021-11-04 07:31:49,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-04 07:31:49,491 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-04 07:31:49,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:31:49,492 INFO L85 PathProgramCache]: Analyzing trace with hash -757809800, now seen corresponding path program 1 times [2021-11-04 07:31:49,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:31:49,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932552529] [2021-11-04 07:31:49,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:31:49,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:31:49,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:31:49,859 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-04 07:31:49,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:31:49,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932552529] [2021-11-04 07:31:49,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932552529] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:31:49,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:31:49,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 07:31:49,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368443652] [2021-11-04 07:31:49,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:31:49,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:31:49,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:31:49,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:31:49,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:31:49,860 INFO L87 Difference]: Start difference. First operand 32372 states and 45148 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:31:51,959 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:31:58,007 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 [] [2021-11-04 07:33:10,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:33:10,127 INFO L93 Difference]: Finished difference Result 93339 states and 132750 transitions. [2021-11-04 07:33:10,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 07:33:10,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-04 07:33:10,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:33:10,423 INFO L225 Difference]: With dead ends: 93339 [2021-11-04 07:33:10,423 INFO L226 Difference]: Without dead ends: 61063 [2021-11-04 07:33:10,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.20ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:33:10,563 INFO L933 BasicCegarLoop]: 459 mSDtfsCounter, 3179 mSDsluCounter, 3331 mSDsCounter, 0 mSdLazyCounter, 8518 mSolverCounterSat, 41 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 74120.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3179 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 8561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 56.12ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 8518 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 78535.24ms IncrementalHoareTripleChecker+Time [2021-11-04 07:33:10,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3179 Valid, 673 Invalid, 8561 Unknown, 0 Unchecked, 56.12ms Time], IncrementalHoareTripleChecker [41 Valid, 8518 Invalid, 2 Unknown, 0 Unchecked, 78535.24ms Time] [2021-11-04 07:33:10,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61063 states. [2021-11-04 07:33:11,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61063 to 60810. [2021-11-04 07:33:11,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60810 states, 57071 states have (on average 1.36573741479911) internal successors, (77944), 57389 states have internal predecessors, (77944), 2638 states have call successors, (2638), 1058 states have call predecessors, (2638), 1048 states have return successors, (5684), 2418 states have call predecessors, (5684), 2638 states have call successors, (5684) [2021-11-04 07:33:12,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60810 states to 60810 states and 86266 transitions. [2021-11-04 07:33:12,043 INFO L78 Accepts]: Start accepts. Automaton has 60810 states and 86266 transitions. Word has length 122 [2021-11-04 07:33:12,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:33:12,044 INFO L470 AbstractCegarLoop]: Abstraction has 60810 states and 86266 transitions. [2021-11-04 07:33:12,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:33:12,044 INFO L276 IsEmpty]: Start isEmpty. Operand 60810 states and 86266 transitions. [2021-11-04 07:33:12,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-04 07:33:12,045 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:33:12,046 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 07:33:12,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-04 07:33:12,048 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-04 07:33:12,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:33:12,049 INFO L85 PathProgramCache]: Analyzing trace with hash -2017254359, now seen corresponding path program 1 times [2021-11-04 07:33:12,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:33:12,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188609944] [2021-11-04 07:33:12,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:33:12,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:33:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:33:12,782 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-04 07:33:12,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:33:12,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188609944] [2021-11-04 07:33:12,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188609944] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:33:12,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:33:12,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 07:33:12,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563071531] [2021-11-04 07:33:12,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:33:12,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:33:12,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:33:12,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:33:12,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:33:12,784 INFO L87 Difference]: Start difference. First operand 60810 states and 86266 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:33:14,883 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:33:20,577 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 [] [2021-11-04 07:34:37,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:34:37,228 INFO L93 Difference]: Finished difference Result 89832 states and 126758 transitions. [2021-11-04 07:34:37,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 07:34:37,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2021-11-04 07:34:37,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:34:37,593 INFO L225 Difference]: With dead ends: 89832 [2021-11-04 07:34:37,593 INFO L226 Difference]: Without dead ends: 89830 [2021-11-04 07:34:37,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.50ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:34:37,638 INFO L933 BasicCegarLoop]: 407 mSDtfsCounter, 3246 mSDsluCounter, 3528 mSDsCounter, 0 mSdLazyCounter, 8921 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 78365.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3246 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 8924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 56.24ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8921 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 82629.04ms IncrementalHoareTripleChecker+Time [2021-11-04 07:34:37,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3246 Valid, 631 Invalid, 8924 Unknown, 0 Unchecked, 56.24ms Time], IncrementalHoareTripleChecker [1 Valid, 8921 Invalid, 2 Unknown, 0 Unchecked, 82629.04ms Time] [2021-11-04 07:34:37,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89830 states. [2021-11-04 07:34:39,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89830 to 89723. [2021-11-04 07:34:39,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89723 states, 84236 states have (on average 1.3653069946341232) internal successors, (115008), 84684 states have internal predecessors, (115008), 3878 states have call successors, (3878), 1560 states have call predecessors, (3878), 1556 states have return successors, (7808), 3562 states have call predecessors, (7808), 3878 states have call successors, (7808) [2021-11-04 07:34:40,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89723 states to 89723 states and 126694 transitions. [2021-11-04 07:34:40,118 INFO L78 Accepts]: Start accepts. Automaton has 89723 states and 126694 transitions. Word has length 123 [2021-11-04 07:34:40,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:34:40,119 INFO L470 AbstractCegarLoop]: Abstraction has 89723 states and 126694 transitions. [2021-11-04 07:34:40,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:34:40,119 INFO L276 IsEmpty]: Start isEmpty. Operand 89723 states and 126694 transitions. [2021-11-04 07:34:40,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-04 07:34:40,120 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:34:40,120 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 07:34:40,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-04 07:34:40,121 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-04 07:34:40,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:34:40,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1889637282, now seen corresponding path program 1 times [2021-11-04 07:34:40,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:34:40,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206391925] [2021-11-04 07:34:40,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:34:40,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:34:40,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:34:40,600 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-04 07:34:40,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:34:40,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206391925] [2021-11-04 07:34:40,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206391925] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:34:40,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:34:40,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 07:34:40,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137551681] [2021-11-04 07:34:40,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:34:40,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:34:40,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:34:40,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:34:40,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:34:40,602 INFO L87 Difference]: Start difference. First operand 89723 states and 126694 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:34:42,701 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:34:48,777 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:35:06,034 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:36:06,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:36:06,468 INFO L93 Difference]: Finished difference Result 89833 states and 126759 transitions. [2021-11-04 07:36:06,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 07:36:06,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-04 07:36:06,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:36:06,888 INFO L225 Difference]: With dead ends: 89833 [2021-11-04 07:36:06,888 INFO L226 Difference]: Without dead ends: 89831 [2021-11-04 07:36:06,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.82ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:36:06,928 INFO L933 BasicCegarLoop]: 407 mSDtfsCounter, 3243 mSDsluCounter, 3531 mSDsCounter, 0 mSdLazyCounter, 8923 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 79092.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3243 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 8927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 56.21ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8923 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 84063.66ms IncrementalHoareTripleChecker+Time [2021-11-04 07:36:06,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3243 Valid, 631 Invalid, 8927 Unknown, 0 Unchecked, 56.21ms Time], IncrementalHoareTripleChecker [1 Valid, 8923 Invalid, 3 Unknown, 0 Unchecked, 84063.66ms Time] [2021-11-04 07:36:06,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89831 states. [2021-11-04 07:36:08,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89831 to 89724. [2021-11-04 07:36:08,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89724 states, 84237 states have (on average 1.3653026579768985) internal successors, (115009), 84685 states have internal predecessors, (115009), 3878 states have call successors, (3878), 1560 states have call predecessors, (3878), 1556 states have return successors, (7808), 3562 states have call predecessors, (7808), 3878 states have call successors, (7808) [2021-11-04 07:36:09,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89724 states to 89724 states and 126695 transitions. [2021-11-04 07:36:09,601 INFO L78 Accepts]: Start accepts. Automaton has 89724 states and 126695 transitions. Word has length 124 [2021-11-04 07:36:09,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:36:09,602 INFO L470 AbstractCegarLoop]: Abstraction has 89724 states and 126695 transitions. [2021-11-04 07:36:09,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:36:09,602 INFO L276 IsEmpty]: Start isEmpty. Operand 89724 states and 126695 transitions. [2021-11-04 07:36:09,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-04 07:36:09,604 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:36:09,604 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 07:36:09,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-04 07:36:09,604 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-04 07:36:09,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:36:09,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1550773421, now seen corresponding path program 1 times [2021-11-04 07:36:09,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:36:09,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979645893] [2021-11-04 07:36:09,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:36:09,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:36:09,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:36:10,208 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-04 07:36:10,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:36:10,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979645893] [2021-11-04 07:36:10,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979645893] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:36:10,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:36:10,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 07:36:10,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788133805] [2021-11-04 07:36:10,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:36:10,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:36:10,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:36:10,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:36:10,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:36:10,210 INFO L87 Difference]: Start difference. First operand 89724 states and 126695 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:36:12,350 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:36:18,510 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:37:36,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:37:36,779 INFO L93 Difference]: Finished difference Result 89834 states and 126760 transitions. [2021-11-04 07:37:36,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 07:37:36,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-04 07:37:36,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:37:37,107 INFO L225 Difference]: With dead ends: 89834 [2021-11-04 07:37:37,108 INFO L226 Difference]: Without dead ends: 89832 [2021-11-04 07:37:37,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.59ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:37:37,147 INFO L933 BasicCegarLoop]: 407 mSDtfsCounter, 3240 mSDsluCounter, 3534 mSDsCounter, 0 mSdLazyCounter, 8927 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 79467.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3240 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 8930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 56.43ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8927 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 84786.92ms IncrementalHoareTripleChecker+Time [2021-11-04 07:37:37,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3240 Valid, 631 Invalid, 8930 Unknown, 0 Unchecked, 56.43ms Time], IncrementalHoareTripleChecker [1 Valid, 8927 Invalid, 2 Unknown, 0 Unchecked, 84786.92ms Time] [2021-11-04 07:37:37,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89832 states. [2021-11-04 07:37:39,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89832 to 89725. [2021-11-04 07:37:39,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89725 states, 84238 states have (on average 1.365298321422636) internal successors, (115010), 84686 states have internal predecessors, (115010), 3878 states have call successors, (3878), 1560 states have call predecessors, (3878), 1556 states have return successors, (7808), 3562 states have call predecessors, (7808), 3878 states have call successors, (7808) [2021-11-04 07:37:39,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89725 states to 89725 states and 126696 transitions. [2021-11-04 07:37:39,880 INFO L78 Accepts]: Start accepts. Automaton has 89725 states and 126696 transitions. Word has length 125 [2021-11-04 07:37:39,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:37:39,881 INFO L470 AbstractCegarLoop]: Abstraction has 89725 states and 126696 transitions. [2021-11-04 07:37:39,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:37:39,881 INFO L276 IsEmpty]: Start isEmpty. Operand 89725 states and 126696 transitions. [2021-11-04 07:37:39,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-04 07:37:39,882 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:37:39,883 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] [2021-11-04 07:37:39,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-04 07:37:39,883 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-04 07:37:39,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:37:39,883 INFO L85 PathProgramCache]: Analyzing trace with hash -829322804, now seen corresponding path program 1 times [2021-11-04 07:37:39,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:37:39,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83316198] [2021-11-04 07:37:39,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:37:39,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:37:40,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:37:40,314 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-04 07:37:40,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:37:40,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83316198] [2021-11-04 07:37:40,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83316198] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:37:40,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:37:40,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 07:37:40,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026048599] [2021-11-04 07:37:40,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:37:40,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:37:40,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:37:40,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:37:40,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:37:40,316 INFO L87 Difference]: Start difference. First operand 89725 states and 126696 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 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) Killed by 15