/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 14:13:38,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 14:13:38,867 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 14:13:38,923 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 14:13:38,924 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 14:13:38,928 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 14:13:38,932 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 14:13:38,941 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 14:13:38,945 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 14:13:38,952 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 14:13:38,953 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 14:13:38,955 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 14:13:38,955 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 14:13:38,959 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 14:13:38,961 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 14:13:38,964 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 14:13:38,965 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 14:13:38,969 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 14:13:38,977 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 14:13:38,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 14:13:38,989 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 14:13:38,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 14:13:38,993 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 14:13:38,996 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 14:13:39,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 14:13:39,019 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 14:13:39,019 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 14:13:39,022 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 14:13:39,023 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 14:13:39,024 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 14:13:39,024 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 14:13:39,025 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 14:13:39,027 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 14:13:39,028 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 14:13:39,029 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 14:13:39,030 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 14:13:39,030 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 14:13:39,031 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 14:13:39,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 14:13:39,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 14:13:39,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 14:13:39,039 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 14:13:39,099 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 14:13:39,100 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 14:13:39,104 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 14:13:39,105 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 14:13:39,105 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 14:13:39,105 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 14:13:39,105 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 14:13:39,106 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 14:13:39,106 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 14:13:39,106 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 14:13:39,108 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 14:13:39,108 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 14:13:39,108 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 14:13:39,108 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 14:13:39,109 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 14:13:39,109 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 14:13:39,109 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 14:13:39,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 14:13:39,109 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 14:13:39,109 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 14:13:39,110 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 14:13:39,110 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 14:13:39,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 14:13:39,111 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 14:13:39,111 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 14:13:39,111 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 14:13:39,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 14:13:39,552 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 14:13:39,555 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 14:13:39,557 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 14:13:39,558 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 14:13:39,559 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2020-12-22 14:13:39,661 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c50e874b/1369216d9035494cae9785c9e6e4124f/FLAGfd7803a7e [2020-12-22 14:13:40,981 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 14:13:40,981 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2020-12-22 14:13:41,065 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c50e874b/1369216d9035494cae9785c9e6e4124f/FLAGfd7803a7e [2020-12-22 14:13:41,198 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c50e874b/1369216d9035494cae9785c9e6e4124f [2020-12-22 14:13:41,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 14:13:41,204 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 14:13:41,208 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 14:13:41,208 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 14:13:41,212 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 14:13:41,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:13:41" (1/1) ... [2020-12-22 14:13:41,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@178c2e78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:13:41, skipping insertion in model container [2020-12-22 14:13:41,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:13:41" (1/1) ... [2020-12-22 14:13:41,224 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 14:13:41,445 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 14:13:44,655 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[313744,313757] [2020-12-22 14:13:44,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 14:13:44,864 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 14:13:45,577 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[313744,313757] [2020-12-22 14:13:45,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 14:13:46,298 INFO L208 MainTranslator]: Completed translation [2020-12-22 14:13:46,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:13:46 WrapperNode [2020-12-22 14:13:46,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 14:13:46,301 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 14:13:46,301 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 14:13:46,301 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 14:13:46,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:13:46" (1/1) ... [2020-12-22 14:13:46,463 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:13:46" (1/1) ... [2020-12-22 14:13:47,113 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 14:13:47,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 14:13:47,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 14:13:47,115 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 14:13:47,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:13:46" (1/1) ... [2020-12-22 14:13:47,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:13:46" (1/1) ... [2020-12-22 14:13:47,279 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:13:46" (1/1) ... [2020-12-22 14:13:47,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:13:46" (1/1) ... [2020-12-22 14:13:47,587 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:13:46" (1/1) ... [2020-12-22 14:13:47,651 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:13:46" (1/1) ... [2020-12-22 14:13:47,726 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:13:46" (1/1) ... [2020-12-22 14:13:47,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 14:13:47,952 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 14:13:47,952 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 14:13:47,952 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 14:13:47,953 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:13:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 14:13:48,071 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_dtr_rts [2020-12-22 14:13:48,071 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_dtr_rts [2020-12-22 14:13:48,071 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_remove [2020-12-22 14:13:48,072 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_remove [2020-12-22 14:13:48,072 INFO L130 BoogieDeclarations]: Found specification of procedure serial_chars_in_buffer [2020-12-22 14:13:48,072 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_chars_in_buffer [2020-12-22 14:13:48,072 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_activate [2020-12-22 14:13:48,072 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_activate [2020-12-22 14:13:48,072 INFO L130 BoogieDeclarations]: Found specification of procedure serial_ioctl [2020-12-22 14:13:48,073 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_ioctl [2020-12-22 14:13:48,073 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write_room [2020-12-22 14:13:48,073 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write_room [2020-12-22 14:13:48,073 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2020-12-22 14:13:48,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2020-12-22 14:13:48,073 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_probe [2020-12-22 14:13:48,074 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_probe [2020-12-22 14:13:48,074 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2020-12-22 14:13:48,074 INFO L130 BoogieDeclarations]: Found specification of procedure serial_get_icount [2020-12-22 14:13:48,074 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_get_icount [2020-12-22 14:13:48,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 14:13:48,074 INFO L130 BoogieDeclarations]: Found specification of procedure serial_cleanup [2020-12-22 14:13:48,074 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_cleanup [2020-12-22 14:13:48,075 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_carrier_raised [2020-12-22 14:13:48,075 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_carrier_raised [2020-12-22 14:13:48,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 14:13:48,075 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2020-12-22 14:13:48,075 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2020-12-22 14:13:48,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 14:13:48,075 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_reset_resume [2020-12-22 14:13:48,075 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_reset_resume [2020-12-22 14:13:48,076 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_read_bulk_callback [2020-12-22 14:13:48,076 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_read_bulk_callback [2020-12-22 14:13:48,076 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 14:13:48,076 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_shutdown [2020-12-22 14:13:48,076 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_shutdown [2020-12-22 14:13:48,076 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2020-12-22 14:13:48,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2020-12-22 14:13:48,077 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2020-12-22 14:13:48,077 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2020-12-22 14:13:48,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 14:13:48,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 14:13:48,077 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2020-12-22 14:13:48,077 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-12-22 14:13:48,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-12-22 14:13:48,078 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2020-12-22 14:13:48,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2020-12-22 14:13:48,078 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_put [2020-12-22 14:13:48,078 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_put [2020-12-22 14:13:48,078 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_serial [2020-12-22 14:13:48,078 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_serial [2020-12-22 14:13:48,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 14:13:48,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 14:13:48,079 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_start [2020-12-22 14:13:48,079 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_start [2020-12-22 14:13:48,079 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-12-22 14:13:48,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-12-22 14:13:48,079 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2020-12-22 14:13:48,079 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2020-12-22 14:13:48,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 14:13:48,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 14:13:48,080 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write [2020-12-22 14:13:48,080 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write [2020-12-22 14:13:48,080 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2020-12-22 14:13:48,080 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2020-12-22 14:13:48,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 14:13:48,080 INFO L130 BoogieDeclarations]: Found specification of procedure serial_unthrottle [2020-12-22 14:13:48,081 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_unthrottle [2020-12-22 14:13:48,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 14:13:48,081 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2020-12-22 14:13:48,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2020-12-22 14:13:48,081 INFO L130 BoogieDeclarations]: Found specification of procedure serial_throttle [2020-12-22 14:13:48,081 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_throttle [2020-12-22 14:13:48,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 14:13:48,082 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2020-12-22 14:13:48,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2020-12-22 14:13:48,082 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmget [2020-12-22 14:13:48,082 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmget [2020-12-22 14:13:48,082 INFO L130 BoogieDeclarations]: Found specification of procedure serial_wait_until_sent [2020-12-22 14:13:48,082 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_wait_until_sent [2020-12-22 14:13:48,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 14:13:48,083 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2020-12-22 14:13:48,083 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2020-12-22 14:13:48,083 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2020-12-22 14:13:48,083 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2020-12-22 14:13:48,083 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmset [2020-12-22 14:13:48,083 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmset [2020-12-22 14:13:48,084 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write [2020-12-22 14:13:48,084 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write [2020-12-22 14:13:48,084 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2020-12-22 14:13:48,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2020-12-22 14:13:48,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 14:14:37,428 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 14:14:37,428 INFO L299 CfgBuilder]: Removed 2091 assume(true) statements. [2020-12-22 14:14:37,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:14:37 BoogieIcfgContainer [2020-12-22 14:14:37,436 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 14:14:37,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 14:14:37,438 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 14:14:37,442 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 14:14:37,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:13:41" (1/3) ... [2020-12-22 14:14:37,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4479bd2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:14:37, skipping insertion in model container [2020-12-22 14:14:37,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:13:46" (2/3) ... [2020-12-22 14:14:37,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4479bd2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:14:37, skipping insertion in model container [2020-12-22 14:14:37,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:14:37" (3/3) ... [2020-12-22 14:14:37,447 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2020-12-22 14:14:37,455 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 14:14:37,464 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-12-22 14:14:37,487 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-12-22 14:14:37,535 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 14:14:37,535 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 14:14:37,535 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 14:14:37,536 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 14:14:37,536 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 14:14:37,536 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 14:14:37,536 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 14:14:37,536 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 14:14:37,601 INFO L276 IsEmpty]: Start isEmpty. Operand 2561 states. [2020-12-22 14:14:37,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-12-22 14:14:37,637 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:14:37,638 INFO L422 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] [2020-12-22 14:14:37,639 INFO L429 AbstractCegarLoop]: === Iteration 1 === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr3ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr4ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr5ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr2ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:14:37,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:14:37,647 INFO L82 PathProgramCache]: Analyzing trace with hash -446975168, now seen corresponding path program 1 times [2020-12-22 14:14:37,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:14:37,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959565172] [2020-12-22 14:14:37,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:14:38,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:14:39,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:14:39,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959565172] [2020-12-22 14:14:39,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:14:39,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 14:14:39,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703258614] [2020-12-22 14:14:39,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 14:14:39,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:14:39,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 14:14:39,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 14:14:39,260 INFO L87 Difference]: Start difference. First operand 2561 states. Second operand 2 states. [2020-12-22 14:14:39,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:14:39,525 INFO L93 Difference]: Finished difference Result 5118 states and 7222 transitions. [2020-12-22 14:14:39,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 14:14:39,535 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 110 [2020-12-22 14:14:39,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:14:39,590 INFO L225 Difference]: With dead ends: 5118 [2020-12-22 14:14:39,591 INFO L226 Difference]: Without dead ends: 2546 [2020-12-22 14:14:39,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 14:14:39,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2546 states. [2020-12-22 14:14:39,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2546 to 2546. [2020-12-22 14:14:39,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2546 states. [2020-12-22 14:14:39,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2546 states to 2546 states and 3467 transitions. [2020-12-22 14:14:39,879 INFO L78 Accepts]: Start accepts. Automaton has 2546 states and 3467 transitions. Word has length 110 [2020-12-22 14:14:39,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:14:39,879 INFO L481 AbstractCegarLoop]: Abstraction has 2546 states and 3467 transitions. [2020-12-22 14:14:39,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 14:14:39,880 INFO L276 IsEmpty]: Start isEmpty. Operand 2546 states and 3467 transitions. [2020-12-22 14:14:39,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-12-22 14:14:39,890 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:14:39,890 INFO L422 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] [2020-12-22 14:14:39,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 14:14:39,891 INFO L429 AbstractCegarLoop]: === Iteration 2 === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr3ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr4ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr5ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr2ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:14:39,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:14:39,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1434476754, now seen corresponding path program 1 times [2020-12-22 14:14:39,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:14:39,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944313560] [2020-12-22 14:14:39,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:14:40,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:14:41,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:14:41,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944313560] [2020-12-22 14:14:41,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:14:41,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:14:41,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915348382] [2020-12-22 14:14:41,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:14:41,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:14:41,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:14:41,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:14:41,042 INFO L87 Difference]: Start difference. First operand 2546 states and 3467 transitions. Second operand 3 states. [2020-12-22 14:14:43,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:14:43,632 INFO L93 Difference]: Finished difference Result 7260 states and 9953 transitions. [2020-12-22 14:14:43,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:14:43,633 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 110 [2020-12-22 14:14:43,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:14:43,693 INFO L225 Difference]: With dead ends: 7260 [2020-12-22 14:14:43,693 INFO L226 Difference]: Without dead ends: 4798 [2020-12-22 14:14:43,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:14:43,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4798 states. [2020-12-22 14:14:43,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4798 to 4778. [2020-12-22 14:14:43,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4778 states. [2020-12-22 14:14:43,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4778 states to 4778 states and 6569 transitions. [2020-12-22 14:14:43,981 INFO L78 Accepts]: Start accepts. Automaton has 4778 states and 6569 transitions. Word has length 110 [2020-12-22 14:14:43,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:14:43,984 INFO L481 AbstractCegarLoop]: Abstraction has 4778 states and 6569 transitions. [2020-12-22 14:14:43,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:14:43,985 INFO L276 IsEmpty]: Start isEmpty. Operand 4778 states and 6569 transitions. [2020-12-22 14:14:43,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-12-22 14:14:43,997 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:14:43,997 INFO L422 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] [2020-12-22 14:14:43,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 14:14:43,998 INFO L429 AbstractCegarLoop]: === Iteration 3 === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr3ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr4ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr5ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr2ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:14:44,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:14:44,001 INFO L82 PathProgramCache]: Analyzing trace with hash -376049304, now seen corresponding path program 1 times [2020-12-22 14:14:44,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:14:44,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618782181] [2020-12-22 14:14:44,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:14:44,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:14:45,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:14:45,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618782181] [2020-12-22 14:14:45,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:14:45,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 14:14:45,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824781008] [2020-12-22 14:14:45,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:14:45,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:14:45,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:14:45,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:14:45,099 INFO L87 Difference]: Start difference. First operand 4778 states and 6569 transitions. Second operand 3 states. [2020-12-22 14:14:45,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:14:45,672 INFO L93 Difference]: Finished difference Result 14144 states and 19610 transitions. [2020-12-22 14:14:45,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:14:45,673 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 110 [2020-12-22 14:14:45,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:14:45,776 INFO L225 Difference]: With dead ends: 14144 [2020-12-22 14:14:45,776 INFO L226 Difference]: Without dead ends: 9427 [2020-12-22 14:14:45,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:14:45,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9427 states. [2020-12-22 14:14:46,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9427 to 9397. [2020-12-22 14:14:46,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9397 states. [2020-12-22 14:14:46,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9397 states to 9397 states and 12974 transitions. [2020-12-22 14:14:46,280 INFO L78 Accepts]: Start accepts. Automaton has 9397 states and 12974 transitions. Word has length 110 [2020-12-22 14:14:46,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:14:46,281 INFO L481 AbstractCegarLoop]: Abstraction has 9397 states and 12974 transitions. [2020-12-22 14:14:46,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:14:46,281 INFO L276 IsEmpty]: Start isEmpty. Operand 9397 states and 12974 transitions. [2020-12-22 14:14:46,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-12-22 14:14:46,306 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:14:46,308 INFO L422 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] [2020-12-22 14:14:46,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 14:14:46,308 INFO L429 AbstractCegarLoop]: === Iteration 4 === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr3ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr4ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr5ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr2ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:14:46,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:14:46,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1377137642, now seen corresponding path program 1 times [2020-12-22 14:14:46,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:14:46,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564183693] [2020-12-22 14:14:46,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:14:46,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:14:47,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:14:47,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564183693] [2020-12-22 14:14:47,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:14:47,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:14:47,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337828848] [2020-12-22 14:14:47,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:14:47,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:14:47,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:14:47,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:14:47,159 INFO L87 Difference]: Start difference. First operand 9397 states and 12974 transitions. Second operand 3 states. [2020-12-22 14:14:48,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:14:48,314 INFO L93 Difference]: Finished difference Result 27578 states and 38331 transitions. [2020-12-22 14:14:48,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:14:48,316 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2020-12-22 14:14:48,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:14:48,475 INFO L225 Difference]: With dead ends: 27578 [2020-12-22 14:14:48,475 INFO L226 Difference]: Without dead ends: 18265 [2020-12-22 14:14:48,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:14:48,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18265 states. [2020-12-22 14:14:49,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18265 to 18147. [2020-12-22 14:14:49,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18147 states. [2020-12-22 14:14:49,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18147 states to 18147 states and 25332 transitions. [2020-12-22 14:14:49,312 INFO L78 Accepts]: Start accepts. Automaton has 18147 states and 25332 transitions. Word has length 122 [2020-12-22 14:14:49,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:14:49,313 INFO L481 AbstractCegarLoop]: Abstraction has 18147 states and 25332 transitions. [2020-12-22 14:14:49,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:14:49,313 INFO L276 IsEmpty]: Start isEmpty. Operand 18147 states and 25332 transitions. [2020-12-22 14:14:49,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-12-22 14:14:49,322 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:14:49,323 INFO L422 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] [2020-12-22 14:14:49,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 14:14:49,323 INFO L429 AbstractCegarLoop]: === Iteration 5 === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr3ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr4ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr5ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr2ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:14:49,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:14:49,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1382664594, now seen corresponding path program 1 times [2020-12-22 14:14:49,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:14:49,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116873009] [2020-12-22 14:14:49,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:14:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:14:50,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:14:50,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116873009] [2020-12-22 14:14:50,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:14:50,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:14:50,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177588079] [2020-12-22 14:14:50,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:14:50,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:14:50,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:14:50,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:14:50,158 INFO L87 Difference]: Start difference. First operand 18147 states and 25332 transitions. Second operand 3 states. [2020-12-22 14:14:51,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:14:51,877 INFO L93 Difference]: Finished difference Result 50815 states and 70676 transitions. [2020-12-22 14:14:51,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:14:51,878 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2020-12-22 14:14:51,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:14:52,089 INFO L225 Difference]: With dead ends: 50815 [2020-12-22 14:14:52,090 INFO L226 Difference]: Without dead ends: 32752 [2020-12-22 14:14:52,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:14:52,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32752 states. [2020-12-22 14:14:53,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32752 to 32607. [2020-12-22 14:14:53,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32607 states. [2020-12-22 14:14:53,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32607 states to 32607 states and 45294 transitions. [2020-12-22 14:14:53,765 INFO L78 Accepts]: Start accepts. Automaton has 32607 states and 45294 transitions. Word has length 122 [2020-12-22 14:14:53,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:14:53,766 INFO L481 AbstractCegarLoop]: Abstraction has 32607 states and 45294 transitions. [2020-12-22 14:14:53,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:14:53,767 INFO L276 IsEmpty]: Start isEmpty. Operand 32607 states and 45294 transitions. [2020-12-22 14:14:53,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-12-22 14:14:53,776 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:14:53,776 INFO L422 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] [2020-12-22 14:14:53,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 14:14:53,777 INFO L429 AbstractCegarLoop]: === Iteration 6 === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr3ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr4ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr5ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr2ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:14:53,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:14:53,777 INFO L82 PathProgramCache]: Analyzing trace with hash -337432058, now seen corresponding path program 1 times [2020-12-22 14:14:53,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:14:53,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240110857] [2020-12-22 14:14:53,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:14:54,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:14:54,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:14:54,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240110857] [2020-12-22 14:14:54,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:14:54,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:14:54,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263996945] [2020-12-22 14:14:54,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:14:54,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:14:54,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:14:54,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:14:54,654 INFO L87 Difference]: Start difference. First operand 32607 states and 45294 transitions. Second operand 3 states. [2020-12-22 14:14:56,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:14:56,961 INFO L93 Difference]: Finished difference Result 95537 states and 133950 transitions. [2020-12-22 14:14:56,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:14:56,962 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 126 [2020-12-22 14:14:56,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:14:57,527 INFO L225 Difference]: With dead ends: 95537 [2020-12-22 14:14:57,527 INFO L226 Difference]: Without dead ends: 63014 [2020-12-22 14:14:57,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:14:57,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63014 states. [2020-12-22 14:15:00,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63014 to 62879. [2020-12-22 14:15:00,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62879 states. [2020-12-22 14:15:00,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62879 states to 62879 states and 88610 transitions. [2020-12-22 14:15:00,711 INFO L78 Accepts]: Start accepts. Automaton has 62879 states and 88610 transitions. Word has length 126 [2020-12-22 14:15:00,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:15:00,711 INFO L481 AbstractCegarLoop]: Abstraction has 62879 states and 88610 transitions. [2020-12-22 14:15:00,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:15:00,712 INFO L276 IsEmpty]: Start isEmpty. Operand 62879 states and 88610 transitions. [2020-12-22 14:15:00,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-12-22 14:15:00,871 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:15:00,871 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:15:00,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 14:15:00,872 INFO L429 AbstractCegarLoop]: === Iteration 7 === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr3ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr4ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr5ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr2ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:15:00,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:15:00,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1482483944, now seen corresponding path program 1 times [2020-12-22 14:15:00,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:15:00,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997034099] [2020-12-22 14:15:00,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:15:01,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:15:01,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-12-22 14:15:01,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:15:01,756 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:15:01,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997034099] [2020-12-22 14:15:01,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:15:01,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 14:15:01,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553840388] [2020-12-22 14:15:01,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:15:01,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:15:01,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:15:01,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:15:01,759 INFO L87 Difference]: Start difference. First operand 62879 states and 88610 transitions. Second operand 4 states. [2020-12-22 14:15:32,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:15:32,174 INFO L93 Difference]: Finished difference Result 197277 states and 279238 transitions. [2020-12-22 14:15:32,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 14:15:32,176 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 167 [2020-12-22 14:15:32,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:15:33,651 INFO L225 Difference]: With dead ends: 197277 [2020-12-22 14:15:33,652 INFO L226 Difference]: Without dead ends: 134482 [2020-12-22 14:15:33,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:15:34,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134482 states. [2020-12-22 14:15:38,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134482 to 130827. [2020-12-22 14:15:38,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130827 states. [2020-12-22 14:15:39,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130827 states to 130827 states and 185286 transitions. [2020-12-22 14:15:39,841 INFO L78 Accepts]: Start accepts. Automaton has 130827 states and 185286 transitions. Word has length 167 [2020-12-22 14:15:39,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:15:39,842 INFO L481 AbstractCegarLoop]: Abstraction has 130827 states and 185286 transitions. [2020-12-22 14:15:39,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:15:39,842 INFO L276 IsEmpty]: Start isEmpty. Operand 130827 states and 185286 transitions. [2020-12-22 14:15:39,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-12-22 14:15:39,852 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:15:39,853 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:15:39,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 14:15:39,853 INFO L429 AbstractCegarLoop]: === Iteration 8 === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr3ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr4ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr5ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr2ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:15:39,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:15:39,854 INFO L82 PathProgramCache]: Analyzing trace with hash -732853996, now seen corresponding path program 1 times [2020-12-22 14:15:39,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:15:39,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331939253] [2020-12-22 14:15:39,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:15:40,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:15:41,372 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:15:41,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331939253] [2020-12-22 14:15:41,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:15:41,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:15:41,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428723274] [2020-12-22 14:15:41,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:15:41,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:15:41,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:15:41,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:15:41,385 INFO L87 Difference]: Start difference. First operand 130827 states and 185286 transitions. Second operand 3 states. [2020-12-22 14:15:45,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:15:45,294 INFO L93 Difference]: Finished difference Result 198137 states and 280392 transitions. [2020-12-22 14:15:45,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:15:45,295 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 165 [2020-12-22 14:15:45,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:15:45,642 INFO L225 Difference]: With dead ends: 198137 [2020-12-22 14:15:45,642 INFO L226 Difference]: Without dead ends: 67394 [2020-12-22 14:15:46,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:15:46,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67394 states. [2020-12-22 14:15:49,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67394 to 65244. [2020-12-22 14:15:49,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65244 states. [2020-12-22 14:15:49,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65244 states to 65244 states and 92430 transitions. [2020-12-22 14:15:49,337 INFO L78 Accepts]: Start accepts. Automaton has 65244 states and 92430 transitions. Word has length 165 [2020-12-22 14:15:49,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:15:49,338 INFO L481 AbstractCegarLoop]: Abstraction has 65244 states and 92430 transitions. [2020-12-22 14:15:49,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:15:49,338 INFO L276 IsEmpty]: Start isEmpty. Operand 65244 states and 92430 transitions. [2020-12-22 14:15:49,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-12-22 14:15:49,359 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:15:49,359 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:15:49,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 14:15:49,360 INFO L429 AbstractCegarLoop]: === Iteration 9 === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr3ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr4ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr5ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr2ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:15:49,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:15:49,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1866473330, now seen corresponding path program 1 times [2020-12-22 14:15:49,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:15:49,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994851936] [2020-12-22 14:15:49,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:15:49,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:15:50,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:15:50,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994851936] [2020-12-22 14:15:50,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:15:50,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 14:15:50,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799177644] [2020-12-22 14:15:50,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:15:50,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:15:50,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:15:50,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:15:50,273 INFO L87 Difference]: Start difference. First operand 65244 states and 92430 transitions. Second operand 4 states. [2020-12-22 14:15:54,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:15:54,900 INFO L93 Difference]: Finished difference Result 130098 states and 184338 transitions. [2020-12-22 14:15:54,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 14:15:54,901 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 178 [2020-12-22 14:15:54,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:15:55,213 INFO L225 Difference]: With dead ends: 130098 [2020-12-22 14:15:55,213 INFO L226 Difference]: Without dead ends: 65255 [2020-12-22 14:15:55,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:15:55,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65255 states. [2020-12-22 14:15:57,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65255 to 65246. [2020-12-22 14:15:57,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65246 states. [2020-12-22 14:15:58,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65246 states to 65246 states and 92428 transitions. [2020-12-22 14:15:58,065 INFO L78 Accepts]: Start accepts. Automaton has 65246 states and 92428 transitions. Word has length 178 [2020-12-22 14:15:58,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:15:58,066 INFO L481 AbstractCegarLoop]: Abstraction has 65246 states and 92428 transitions. [2020-12-22 14:15:58,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:15:58,066 INFO L276 IsEmpty]: Start isEmpty. Operand 65246 states and 92428 transitions. [2020-12-22 14:15:58,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-12-22 14:15:58,086 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:15:58,087 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:15:58,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 14:15:58,087 INFO L429 AbstractCegarLoop]: === Iteration 10 === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr3ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr4ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr5ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr2ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:15:58,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:15:58,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1973694521, now seen corresponding path program 1 times [2020-12-22 14:15:58,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:15:58,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383701185] [2020-12-22 14:15:58,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:15:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:15:59,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 14:15:59,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383701185] [2020-12-22 14:15:59,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:15:59,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 14:15:59,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125841113] [2020-12-22 14:15:59,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 14:15:59,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:15:59,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 14:15:59,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:15:59,196 INFO L87 Difference]: Start difference. First operand 65246 states and 92428 transitions. Second operand 5 states. [2020-12-22 14:16:02,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:16:02,183 INFO L93 Difference]: Finished difference Result 130181 states and 184410 transitions. [2020-12-22 14:16:02,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 14:16:02,184 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-12-22 14:16:02,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:16:02,468 INFO L225 Difference]: With dead ends: 130181 [2020-12-22 14:16:02,469 INFO L226 Difference]: Without dead ends: 65344 [2020-12-22 14:16:02,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 14:16:02,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65344 states. [2020-12-22 14:16:04,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65344 to 65246. [2020-12-22 14:16:04,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65246 states. [2020-12-22 14:16:05,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65246 states to 65246 states and 92364 transitions. [2020-12-22 14:16:05,169 INFO L78 Accepts]: Start accepts. Automaton has 65246 states and 92364 transitions. Word has length 182 [2020-12-22 14:16:05,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:16:05,170 INFO L481 AbstractCegarLoop]: Abstraction has 65246 states and 92364 transitions. [2020-12-22 14:16:05,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 14:16:05,170 INFO L276 IsEmpty]: Start isEmpty. Operand 65246 states and 92364 transitions. [2020-12-22 14:16:05,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-12-22 14:16:05,192 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:16:05,192 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:16:05,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 14:16:05,192 INFO L429 AbstractCegarLoop]: === Iteration 11 === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr3ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr4ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr5ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr2ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:16:05,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:16:05,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1093218855, now seen corresponding path program 1 times [2020-12-22 14:16:05,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:16:05,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449073848] [2020-12-22 14:16:05,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:16:05,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:16:06,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 14:16:06,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449073848] [2020-12-22 14:16:06,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:16:06,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 14:16:06,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235242624] [2020-12-22 14:16:06,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 14:16:06,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:16:06,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 14:16:06,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 14:16:06,028 INFO L87 Difference]: Start difference. First operand 65246 states and 92364 transitions. Second operand 6 states. [2020-12-22 14:16:09,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:16:09,506 INFO L93 Difference]: Finished difference Result 142160 states and 202742 transitions. [2020-12-22 14:16:09,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 14:16:09,507 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 183 [2020-12-22 14:16:09,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:16:09,835 INFO L225 Difference]: With dead ends: 142160 [2020-12-22 14:16:09,835 INFO L226 Difference]: Without dead ends: 77323 [2020-12-22 14:16:10,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-12-22 14:16:10,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77323 states. [2020-12-22 14:16:12,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77323 to 65246. [2020-12-22 14:16:12,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65246 states. [2020-12-22 14:16:12,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65246 states to 65246 states and 92300 transitions. [2020-12-22 14:16:13,001 INFO L78 Accepts]: Start accepts. Automaton has 65246 states and 92300 transitions. Word has length 183 [2020-12-22 14:16:13,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:16:13,002 INFO L481 AbstractCegarLoop]: Abstraction has 65246 states and 92300 transitions. [2020-12-22 14:16:13,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 14:16:13,002 INFO L276 IsEmpty]: Start isEmpty. Operand 65246 states and 92300 transitions. [2020-12-22 14:16:13,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-12-22 14:16:13,026 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:16:13,026 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:16:13,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 14:16:13,027 INFO L429 AbstractCegarLoop]: === Iteration 12 === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr3ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr4ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr5ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr2ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:16:13,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:16:13,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1540525406, now seen corresponding path program 1 times [2020-12-22 14:16:13,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:16:13,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392437450] [2020-12-22 14:16:13,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:16:13,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:16:13,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 14:16:13,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392437450] [2020-12-22 14:16:13,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:16:13,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 14:16:13,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505993477] [2020-12-22 14:16:13,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 14:16:13,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:16:13,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 14:16:13,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 14:16:13,780 INFO L87 Difference]: Start difference. First operand 65246 states and 92300 transitions. Second operand 6 states. [2020-12-22 14:16:17,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:16:17,683 INFO L93 Difference]: Finished difference Result 142160 states and 202614 transitions. [2020-12-22 14:16:17,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 14:16:17,686 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 184 [2020-12-22 14:16:17,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:16:17,997 INFO L225 Difference]: With dead ends: 142160 [2020-12-22 14:16:17,998 INFO L226 Difference]: Without dead ends: 77323 [2020-12-22 14:16:18,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-12-22 14:16:18,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77323 states. [2020-12-22 14:16:20,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77323 to 65246. [2020-12-22 14:16:20,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65246 states. [2020-12-22 14:16:21,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65246 states to 65246 states and 92236 transitions. [2020-12-22 14:16:21,023 INFO L78 Accepts]: Start accepts. Automaton has 65246 states and 92236 transitions. Word has length 184 [2020-12-22 14:16:21,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:16:21,024 INFO L481 AbstractCegarLoop]: Abstraction has 65246 states and 92236 transitions. [2020-12-22 14:16:21,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 14:16:21,024 INFO L276 IsEmpty]: Start isEmpty. Operand 65246 states and 92236 transitions. [2020-12-22 14:16:21,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-12-22 14:16:21,043 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:16:21,044 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:16:21,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 14:16:21,044 INFO L429 AbstractCegarLoop]: === Iteration 13 === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr3ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr4ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr5ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr2ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:16:21,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:16:21,045 INFO L82 PathProgramCache]: Analyzing trace with hash 632016313, now seen corresponding path program 1 times [2020-12-22 14:16:21,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:16:21,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418777430] [2020-12-22 14:16:21,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:16:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:16:23,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:16:23,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418777430] [2020-12-22 14:16:23,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:16:23,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 14:16:23,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995011956] [2020-12-22 14:16:23,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:16:23,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:16:23,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:16:23,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:16:23,163 INFO L87 Difference]: Start difference. First operand 65246 states and 92236 transitions. Second operand 4 states. [2020-12-22 14:16:23,552 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-12-22 14:16:28,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:16:28,180 INFO L93 Difference]: Finished difference Result 130118 states and 183968 transitions. [2020-12-22 14:16:28,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 14:16:28,181 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 188 [2020-12-22 14:16:28,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:16:28,456 INFO L225 Difference]: With dead ends: 130118 [2020-12-22 14:16:28,457 INFO L226 Difference]: Without dead ends: 65272 [2020-12-22 14:16:28,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:16:28,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65272 states. [2020-12-22 14:16:31,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65272 to 65248. [2020-12-22 14:16:31,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65248 states. [2020-12-22 14:16:31,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65248 states to 65248 states and 92234 transitions. [2020-12-22 14:16:31,331 INFO L78 Accepts]: Start accepts. Automaton has 65248 states and 92234 transitions. Word has length 188 [2020-12-22 14:16:31,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:16:31,332 INFO L481 AbstractCegarLoop]: Abstraction has 65248 states and 92234 transitions. [2020-12-22 14:16:31,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:16:31,332 INFO L276 IsEmpty]: Start isEmpty. Operand 65248 states and 92234 transitions. [2020-12-22 14:16:31,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-12-22 14:16:31,347 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:16:31,347 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:16:31,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 14:16:31,347 INFO L429 AbstractCegarLoop]: === Iteration 14 === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr3ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr4ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr5ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr2ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:16:31,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:16:31,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1786468165, now seen corresponding path program 1 times [2020-12-22 14:16:31,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:16:31,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331859533] [2020-12-22 14:16:31,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:16:32,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:16:33,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:16:33,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331859533] [2020-12-22 14:16:33,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:16:33,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 14:16:33,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288980369] [2020-12-22 14:16:33,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 14:16:33,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:16:33,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 14:16:33,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 14:16:33,517 INFO L87 Difference]: Start difference. First operand 65248 states and 92234 transitions. Second operand 7 states. [2020-12-22 14:16:39,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:16:39,357 INFO L93 Difference]: Finished difference Result 144333 states and 205676 transitions. [2020-12-22 14:16:39,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 14:16:39,359 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 188 [2020-12-22 14:16:39,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:16:39,686 INFO L225 Difference]: With dead ends: 144333 [2020-12-22 14:16:39,686 INFO L226 Difference]: Without dead ends: 79460 [2020-12-22 14:16:39,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-12-22 14:16:40,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79460 states. [2020-12-22 14:16:43,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79460 to 65253. [2020-12-22 14:16:43,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65253 states. [2020-12-22 14:16:44,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65253 states to 65253 states and 92236 transitions. [2020-12-22 14:16:44,043 INFO L78 Accepts]: Start accepts. Automaton has 65253 states and 92236 transitions. Word has length 188 [2020-12-22 14:16:44,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:16:44,044 INFO L481 AbstractCegarLoop]: Abstraction has 65253 states and 92236 transitions. [2020-12-22 14:16:44,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 14:16:44,044 INFO L276 IsEmpty]: Start isEmpty. Operand 65253 states and 92236 transitions. [2020-12-22 14:16:44,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-12-22 14:16:44,061 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:16:44,062 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:16:44,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 14:16:44,062 INFO L429 AbstractCegarLoop]: === Iteration 15 === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr3ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr4ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr5ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr2ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_probeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:16:44,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:16:44,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1507930803, now seen corresponding path program 1 times [2020-12-22 14:16:44,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:16:44,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404745125] [2020-12-22 14:16:44,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:16:45,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:16:46,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 14:16:46,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404745125] [2020-12-22 14:16:46,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:16:46,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 14:16:46,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588100745] [2020-12-22 14:16:46,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:16:46,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:16:46,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:16:46,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:16:46,490 INFO L87 Difference]: Start difference. First operand 65253 states and 92236 transitions. Second operand 4 states. [2020-12-22 14:16:49,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:16:49,734 INFO L93 Difference]: Finished difference Result 130321 states and 185328 transitions. [2020-12-22 14:16:49,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 14:16:49,735 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 194 [2020-12-22 14:16:49,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted.