./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fcb8e130 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash bf654a6a1eca45ac77a809162568fb8018795c05fa9eb6946186269d2e2c9c25 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-fcb8e13 [2021-11-23 01:13:15,508 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 01:13:15,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 01:13:15,571 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 01:13:15,571 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 01:13:15,574 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 01:13:15,575 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 01:13:15,576 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 01:13:15,577 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 01:13:15,577 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 01:13:15,578 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 01:13:15,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 01:13:15,579 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 01:13:15,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 01:13:15,580 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 01:13:15,581 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 01:13:15,581 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 01:13:15,582 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 01:13:15,583 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 01:13:15,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 01:13:15,585 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 01:13:15,586 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 01:13:15,587 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 01:13:15,588 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 01:13:15,590 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 01:13:15,593 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 01:13:15,593 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 01:13:15,594 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 01:13:15,595 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 01:13:15,596 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 01:13:15,596 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 01:13:15,596 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 01:13:15,597 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 01:13:15,598 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 01:13:15,599 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 01:13:15,599 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 01:13:15,600 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 01:13:15,600 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 01:13:15,600 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 01:13:15,601 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 01:13:15,601 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 01:13:15,602 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-23 01:13:15,624 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 01:13:15,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 01:13:15,625 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 01:13:15,625 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 01:13:15,626 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 01:13:15,626 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 01:13:15,626 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 01:13:15,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 01:13:15,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 01:13:15,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 01:13:15,627 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 01:13:15,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 01:13:15,628 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 01:13:15,628 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 01:13:15,628 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 01:13:15,628 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 01:13:15,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 01:13:15,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 01:13:15,629 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 01:13:15,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:13:15,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 01:13:15,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 01:13:15,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 01:13:15,629 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 01:13:15,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 01:13:15,630 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 01:13:15,630 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 01:13:15,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 01:13:15,630 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 01:13:15,630 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf654a6a1eca45ac77a809162568fb8018795c05fa9eb6946186269d2e2c9c25 [2021-11-23 01:13:15,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 01:13:15,872 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 01:13:15,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 01:13:15,876 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 01:13:15,877 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 01:13:15,878 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-11-23 01:13:15,946 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c8c57812/170222f54edc4462be6d19f63dc54455/FLAG8c5b26f25 [2021-11-23 01:13:16,616 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 01:13:16,616 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-11-23 01:13:16,655 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c8c57812/170222f54edc4462be6d19f63dc54455/FLAG8c5b26f25 [2021-11-23 01:13:16,958 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c8c57812/170222f54edc4462be6d19f63dc54455 [2021-11-23 01:13:16,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 01:13:16,963 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 01:13:16,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 01:13:16,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 01:13:16,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 01:13:16,967 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:13:16" (1/1) ... [2021-11-23 01:13:16,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@549fa2bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:13:16, skipping insertion in model container [2021-11-23 01:13:16,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:13:16" (1/1) ... [2021-11-23 01:13:16,973 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 01:13:17,080 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 01:13:19,104 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[323188,323201] [2021-11-23 01:13:19,313 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:13:19,391 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 01:13:19,719 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[323188,323201] [2021-11-23 01:13:19,733 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:13:19,880 INFO L208 MainTranslator]: Completed translation [2021-11-23 01:13:19,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:13:19 WrapperNode [2021-11-23 01:13:19,880 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 01:13:19,882 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 01:13:19,883 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 01:13:19,883 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 01:13:19,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:13:19" (1/1) ... [2021-11-23 01:13:20,015 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:13:19" (1/1) ... [2021-11-23 01:13:20,300 INFO L137 Inliner]: procedures = 481, calls = 4096, calls flagged for inlining = 827, calls inlined = 1167, statements flattened = 15686 [2021-11-23 01:13:20,301 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 01:13:20,302 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 01:13:20,302 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 01:13:20,302 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 01:13:20,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:13:19" (1/1) ... [2021-11-23 01:13:20,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:13:19" (1/1) ... [2021-11-23 01:13:20,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:13:19" (1/1) ... [2021-11-23 01:13:20,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:13:19" (1/1) ... [2021-11-23 01:13:20,658 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:13:19" (1/1) ... [2021-11-23 01:13:20,724 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:13:19" (1/1) ... [2021-11-23 01:13:20,750 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:13:19" (1/1) ... [2021-11-23 01:13:20,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 01:13:20,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 01:13:20,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 01:13:20,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 01:13:20,851 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:13:19" (1/1) ... [2021-11-23 01:13:20,893 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:13:20,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 01:13:20,937 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 01:13:20,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 01:13:21,002 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_dtr_rts [2021-11-23 01:13:21,002 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_dtr_rts [2021-11-23 01:13:21,003 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_remove [2021-11-23 01:13:21,003 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_remove [2021-11-23 01:13:21,003 INFO L130 BoogieDeclarations]: Found specification of procedure serial_chars_in_buffer [2021-11-23 01:13:21,003 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_chars_in_buffer [2021-11-23 01:13:21,003 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_activate [2021-11-23 01:13:21,003 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_activate [2021-11-23 01:13:21,004 INFO L130 BoogieDeclarations]: Found specification of procedure serial_ioctl [2021-11-23 01:13:21,004 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_ioctl [2021-11-23 01:13:21,004 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write_room [2021-11-23 01:13:21,004 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write_room [2021-11-23 01:13:21,004 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-23 01:13:21,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-23 01:13:21,004 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_probe [2021-11-23 01:13:21,004 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_probe [2021-11-23 01:13:21,005 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-23 01:13:21,005 INFO L130 BoogieDeclarations]: Found specification of procedure serial_get_icount [2021-11-23 01:13:21,005 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_get_icount [2021-11-23 01:13:21,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 01:13:21,005 INFO L130 BoogieDeclarations]: Found specification of procedure serial_cleanup [2021-11-23 01:13:21,005 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_cleanup [2021-11-23 01:13:21,005 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_carrier_raised [2021-11-23 01:13:21,005 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_carrier_raised [2021-11-23 01:13:21,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 01:13:21,006 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2021-11-23 01:13:21,006 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2021-11-23 01:13:21,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 01:13:21,006 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_reset_resume [2021-11-23 01:13:21,006 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_reset_resume [2021-11-23 01:13:21,006 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_read_bulk_callback [2021-11-23 01:13:21,006 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_read_bulk_callback [2021-11-23 01:13:21,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 01:13:21,007 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_shutdown [2021-11-23 01:13:21,007 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_shutdown [2021-11-23 01:13:21,007 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2021-11-23 01:13:21,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2021-11-23 01:13:21,007 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-23 01:13:21,007 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-23 01:13:21,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 01:13:21,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 01:13:21,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 01:13:21,008 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 01:13:21,008 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 01:13:21,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 01:13:21,009 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-23 01:13:21,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-23 01:13:21,009 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_put [2021-11-23 01:13:21,009 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_put [2021-11-23 01:13:21,009 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_serial [2021-11-23 01:13:21,009 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_serial [2021-11-23 01:13:21,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 01:13:21,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 01:13:21,010 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_start [2021-11-23 01:13:21,010 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_start [2021-11-23 01:13:21,010 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-11-23 01:13:21,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-11-23 01:13:21,011 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-11-23 01:13:21,011 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-11-23 01:13:21,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 01:13:21,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 01:13:21,012 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write [2021-11-23 01:13:21,012 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write [2021-11-23 01:13:21,012 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2021-11-23 01:13:21,012 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2021-11-23 01:13:21,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 01:13:21,013 INFO L130 BoogieDeclarations]: Found specification of procedure serial_unthrottle [2021-11-23 01:13:21,013 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_unthrottle [2021-11-23 01:13:21,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 01:13:21,013 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-23 01:13:21,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-23 01:13:21,014 INFO L130 BoogieDeclarations]: Found specification of procedure serial_throttle [2021-11-23 01:13:21,014 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_throttle [2021-11-23 01:13:21,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 01:13:21,014 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-23 01:13:21,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-23 01:13:21,015 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmget [2021-11-23 01:13:21,015 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmget [2021-11-23 01:13:21,015 INFO L130 BoogieDeclarations]: Found specification of procedure serial_wait_until_sent [2021-11-23 01:13:21,015 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_wait_until_sent [2021-11-23 01:13:21,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 01:13:21,015 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2021-11-23 01:13:21,015 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2021-11-23 01:13:21,016 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2021-11-23 01:13:21,016 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2021-11-23 01:13:21,016 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmset [2021-11-23 01:13:21,016 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmset [2021-11-23 01:13:21,016 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write [2021-11-23 01:13:21,016 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write [2021-11-23 01:13:21,016 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-23 01:13:21,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-23 01:13:21,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 01:13:22,064 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 01:13:22,066 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 01:13:32,849 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 01:13:32,874 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 01:13:32,875 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 01:13:32,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:13:32 BoogieIcfgContainer [2021-11-23 01:13:32,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 01:13:32,880 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 01:13:32,880 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 01:13:32,883 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 01:13:32,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:13:16" (1/3) ... [2021-11-23 01:13:32,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a796405 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:13:32, skipping insertion in model container [2021-11-23 01:13:32,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:13:19" (2/3) ... [2021-11-23 01:13:32,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a796405 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:13:32, skipping insertion in model container [2021-11-23 01:13:32,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:13:32" (3/3) ... [2021-11-23 01:13:32,885 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-11-23 01:13:32,889 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 01:13:32,889 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 53 error locations. [2021-11-23 01:13:32,930 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 01:13:32,935 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 01:13:32,935 INFO L340 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2021-11-23 01:13:32,976 INFO L276 IsEmpty]: Start isEmpty. Operand has 2964 states, 2761 states have (on average 1.367982614994567) internal successors, (3777), 2823 states have internal predecessors, (3777), 112 states have call successors, (112), 37 states have call predecessors, (112), 37 states have return successors, (112), 105 states have call predecessors, (112), 112 states have call successors, (112) [2021-11-23 01:13:32,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-23 01:13:32,982 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:13:32,983 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:13:32,983 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting serial_port_activateErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-23 01:13:32,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:13:32,987 INFO L85 PathProgramCache]: Analyzing trace with hash 286854807, now seen corresponding path program 1 times [2021-11-23 01:13:32,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:13:32,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25831852] [2021-11-23 01:13:32,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:13:32,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:13:33,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:13:33,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:13:33,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:13:33,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25831852] [2021-11-23 01:13:33,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25831852] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:13:33,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:13:33,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 01:13:33,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958367523] [2021-11-23 01:13:33,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:13:33,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 01:13:33,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:13:33,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 01:13:33,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 01:13:33,586 INFO L87 Difference]: Start difference. First operand has 2964 states, 2761 states have (on average 1.367982614994567) internal successors, (3777), 2823 states have internal predecessors, (3777), 112 states have call successors, (112), 37 states have call predecessors, (112), 37 states have return successors, (112), 105 states have call predecessors, (112), 112 states have call successors, (112) Second operand has 2 states, 2 states have (on average 47.0) internal successors, (94), 2 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:13:33,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:13:33,733 INFO L93 Difference]: Finished difference Result 5871 states and 8043 transitions. [2021-11-23 01:13:33,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 01:13:33,735 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 47.0) internal successors, (94), 2 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-23 01:13:33,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:13:33,765 INFO L225 Difference]: With dead ends: 5871 [2021-11-23 01:13:33,766 INFO L226 Difference]: Without dead ends: 2896 [2021-11-23 01:13:33,786 INFO L932 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 [2021-11-23 01:13:33,790 INFO L933 BasicCegarLoop]: 3825 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3825 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 01:13:33,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3825 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 01:13:33,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2896 states. [2021-11-23 01:13:33,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2896 to 2896. [2021-11-23 01:13:33,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2896 states, 2694 states have (on average 1.3270230141054193) internal successors, (3575), 2755 states have internal predecessors, (3575), 112 states have call successors, (112), 37 states have call predecessors, (112), 37 states have return successors, (112), 105 states have call predecessors, (112), 112 states have call successors, (112) [2021-11-23 01:13:33,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2896 states to 2896 states and 3799 transitions. [2021-11-23 01:13:33,934 INFO L78 Accepts]: Start accepts. Automaton has 2896 states and 3799 transitions. Word has length 95 [2021-11-23 01:13:33,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:13:33,935 INFO L470 AbstractCegarLoop]: Abstraction has 2896 states and 3799 transitions. [2021-11-23 01:13:33,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 47.0) internal successors, (94), 2 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:13:33,935 INFO L276 IsEmpty]: Start isEmpty. Operand 2896 states and 3799 transitions. [2021-11-23 01:13:33,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-23 01:13:33,942 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:13:33,942 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:13:33,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 01:13:33,942 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting serial_port_activateErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-23 01:13:33,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:13:33,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1216944577, now seen corresponding path program 1 times [2021-11-23 01:13:33,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:13:33,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559356171] [2021-11-23 01:13:33,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:13:33,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:13:34,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:13:34,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:13:34,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:13:34,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559356171] [2021-11-23 01:13:34,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559356171] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:13:34,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:13:34,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:13:34,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144493884] [2021-11-23 01:13:34,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:13:34,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:13:34,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:13:34,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:13:34,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:13:34,340 INFO L87 Difference]: Start difference. First operand 2896 states and 3799 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:13:34,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:13:34,649 INFO L93 Difference]: Finished difference Result 8483 states and 11221 transitions. [2021-11-23 01:13:34,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:13:34,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-23 01:13:34,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:13:34,682 INFO L225 Difference]: With dead ends: 8483 [2021-11-23 01:13:34,683 INFO L226 Difference]: Without dead ends: 5671 [2021-11-23 01:13:34,697 INFO L932 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 [2021-11-23 01:13:34,698 INFO L933 BasicCegarLoop]: 3957 mSDtfsCounter, 3769 mSDsluCounter, 3704 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3769 SdHoareTripleChecker+Valid, 7661 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:13:34,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3769 Valid, 7661 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:13:34,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5671 states. [2021-11-23 01:13:34,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5671 to 5516. [2021-11-23 01:13:34,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5516 states, 5174 states have (on average 1.3335910320834945) internal successors, (6900), 5242 states have internal predecessors, (6900), 215 states have call successors, (215), 74 states have call predecessors, (215), 74 states have return successors, (292), 203 states have call predecessors, (292), 215 states have call successors, (292) [2021-11-23 01:13:34,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5516 states to 5516 states and 7407 transitions. [2021-11-23 01:13:34,948 INFO L78 Accepts]: Start accepts. Automaton has 5516 states and 7407 transitions. Word has length 95 [2021-11-23 01:13:34,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:13:34,951 INFO L470 AbstractCegarLoop]: Abstraction has 5516 states and 7407 transitions. [2021-11-23 01:13:34,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:13:34,952 INFO L276 IsEmpty]: Start isEmpty. Operand 5516 states and 7407 transitions. [2021-11-23 01:13:34,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-23 01:13:34,953 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:13:34,954 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:13:34,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 01:13:34,954 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-23 01:13:34,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:13:34,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1589477293, now seen corresponding path program 1 times [2021-11-23 01:13:34,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:13:34,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959191825] [2021-11-23 01:13:34,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:13:34,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:13:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:13:35,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:13:35,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:13:35,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959191825] [2021-11-23 01:13:35,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959191825] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:13:35,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:13:35,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:13:35,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019213887] [2021-11-23 01:13:35,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:13:35,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:13:35,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:13:35,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:13:35,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:13:35,230 INFO L87 Difference]: Start difference. First operand 5516 states and 7407 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:13:35,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:13:35,691 INFO L93 Difference]: Finished difference Result 15316 states and 20524 transitions. [2021-11-23 01:13:35,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:13:35,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-23 01:13:35,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:13:35,746 INFO L225 Difference]: With dead ends: 15316 [2021-11-23 01:13:35,746 INFO L226 Difference]: Without dead ends: 9884 [2021-11-23 01:13:35,772 INFO L932 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 [2021-11-23 01:13:35,776 INFO L933 BasicCegarLoop]: 3897 mSDtfsCounter, 3089 mSDsluCounter, 3607 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3089 SdHoareTripleChecker+Valid, 7504 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 01:13:35,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3089 Valid, 7504 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 01:13:35,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9884 states. [2021-11-23 01:13:35,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9884 to 9710. [2021-11-23 01:13:36,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9710 states, 9156 states have (on average 1.3333333333333333) internal successors, (12208), 9238 states have internal predecessors, (12208), 362 states have call successors, (362), 139 states have call predecessors, (362), 139 states have return successors, (500), 339 states have call predecessors, (500), 362 states have call successors, (500) [2021-11-23 01:13:36,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9710 states to 9710 states and 13070 transitions. [2021-11-23 01:13:36,066 INFO L78 Accepts]: Start accepts. Automaton has 9710 states and 13070 transitions. Word has length 98 [2021-11-23 01:13:36,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:13:36,068 INFO L470 AbstractCegarLoop]: Abstraction has 9710 states and 13070 transitions. [2021-11-23 01:13:36,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:13:36,069 INFO L276 IsEmpty]: Start isEmpty. Operand 9710 states and 13070 transitions. [2021-11-23 01:13:36,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-23 01:13:36,073 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:13:36,073 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:13:36,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 01:13:36,075 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting usb_serial_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-23 01:13:36,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:13:36,076 INFO L85 PathProgramCache]: Analyzing trace with hash 122541040, now seen corresponding path program 1 times [2021-11-23 01:13:36,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:13:36,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701143732] [2021-11-23 01:13:36,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:13:36,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:13:36,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:13:36,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:13:36,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:13:36,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701143732] [2021-11-23 01:13:36,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701143732] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:13:36,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:13:36,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:13:36,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132491027] [2021-11-23 01:13:36,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:13:36,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:13:36,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:13:36,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:13:36,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:13:36,394 INFO L87 Difference]: Start difference. First operand 9710 states and 13070 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:13:37,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:13:37,045 INFO L93 Difference]: Finished difference Result 27878 states and 37767 transitions. [2021-11-23 01:13:37,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:13:37,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-23 01:13:37,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:13:37,169 INFO L225 Difference]: With dead ends: 27878 [2021-11-23 01:13:37,169 INFO L226 Difference]: Without dead ends: 18252 [2021-11-23 01:13:37,228 INFO L932 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 [2021-11-23 01:13:37,230 INFO L933 BasicCegarLoop]: 4646 mSDtfsCounter, 3571 mSDsluCounter, 3662 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3571 SdHoareTripleChecker+Valid, 8308 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:13:37,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3571 Valid, 8308 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:13:37,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18252 states. [2021-11-23 01:13:37,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18252 to 17992. [2021-11-23 01:13:37,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17992 states, 16981 states have (on average 1.3378481832636475) internal successors, (22718), 17085 states have internal predecessors, (22718), 688 states have call successors, (688), 266 states have call predecessors, (688), 270 states have return successors, (1148), 654 states have call predecessors, (1148), 688 states have call successors, (1148) [2021-11-23 01:13:37,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17992 states to 17992 states and 24554 transitions. [2021-11-23 01:13:37,813 INFO L78 Accepts]: Start accepts. Automaton has 17992 states and 24554 transitions. Word has length 103 [2021-11-23 01:13:37,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:13:37,814 INFO L470 AbstractCegarLoop]: Abstraction has 17992 states and 24554 transitions. [2021-11-23 01:13:37,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:13:37,814 INFO L276 IsEmpty]: Start isEmpty. Operand 17992 states and 24554 transitions. [2021-11-23 01:13:37,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-23 01:13:37,816 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:13:37,816 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:13:37,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 01:13:37,816 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-23 01:13:37,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:13:37,817 INFO L85 PathProgramCache]: Analyzing trace with hash -772848276, now seen corresponding path program 1 times [2021-11-23 01:13:37,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:13:37,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889248031] [2021-11-23 01:13:37,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:13:37,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:13:37,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:13:38,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:13:38,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:13:38,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889248031] [2021-11-23 01:13:38,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889248031] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:13:38,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:13:38,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:13:38,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137281118] [2021-11-23 01:13:38,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:13:38,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:13:38,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:13:38,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:13:38,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:13:38,073 INFO L87 Difference]: Start difference. First operand 17992 states and 24554 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:13:38,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:13:38,838 INFO L93 Difference]: Finished difference Result 52782 states and 72219 transitions. [2021-11-23 01:13:38,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:13:38,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-23 01:13:38,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:13:39,013 INFO L225 Difference]: With dead ends: 52782 [2021-11-23 01:13:39,014 INFO L226 Difference]: Without dead ends: 34874 [2021-11-23 01:13:39,089 INFO L932 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 [2021-11-23 01:13:39,091 INFO L933 BasicCegarLoop]: 4619 mSDtfsCounter, 3589 mSDsluCounter, 3566 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3589 SdHoareTripleChecker+Valid, 8185 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:13:39,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3589 Valid, 8185 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:13:39,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34874 states. [2021-11-23 01:13:39,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34874 to 34790. [2021-11-23 01:13:40,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34790 states, 32821 states have (on average 1.3413058712409738) internal successors, (44023), 32977 states have internal predecessors, (44023), 1376 states have call successors, (1376), 532 states have call predecessors, (1376), 540 states have return successors, (2296), 1308 states have call predecessors, (2296), 1376 states have call successors, (2296) [2021-11-23 01:13:40,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34790 states to 34790 states and 47695 transitions. [2021-11-23 01:13:40,185 INFO L78 Accepts]: Start accepts. Automaton has 34790 states and 47695 transitions. Word has length 103 [2021-11-23 01:13:40,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:13:40,186 INFO L470 AbstractCegarLoop]: Abstraction has 34790 states and 47695 transitions. [2021-11-23 01:13:40,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:13:40,186 INFO L276 IsEmpty]: Start isEmpty. Operand 34790 states and 47695 transitions. [2021-11-23 01:13:40,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-23 01:13:40,189 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:13:40,189 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:13:40,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 01:13:40,189 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-23 01:13:40,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:13:40,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1785229702, now seen corresponding path program 1 times [2021-11-23 01:13:40,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:13:40,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331974048] [2021-11-23 01:13:40,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:13:40,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:13:40,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:13:40,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:13:40,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:13:40,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331974048] [2021-11-23 01:13:40,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331974048] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:13:40,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:13:40,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 01:13:40,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552363643] [2021-11-23 01:13:40,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:13:40,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:13:40,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:13:40,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:13:40,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:13:40,525 INFO L87 Difference]: Start difference. First operand 34790 states and 47695 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:13:42,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:13:42,575 INFO L93 Difference]: Finished difference Result 100292 states and 140133 transitions. [2021-11-23 01:13:42,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:13:42,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2021-11-23 01:13:42,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:13:42,972 INFO L225 Difference]: With dead ends: 100292 [2021-11-23 01:13:42,972 INFO L226 Difference]: Without dead ends: 65586 [2021-11-23 01:13:43,214 INFO L932 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 [2021-11-23 01:13:43,215 INFO L933 BasicCegarLoop]: 4240 mSDtfsCounter, 3530 mSDsluCounter, 3476 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3530 SdHoareTripleChecker+Valid, 7716 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:13:43,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3530 Valid, 7716 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:13:43,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65586 states. [2021-11-23 01:13:44,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65586 to 65325. [2021-11-23 01:13:44,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65325 states, 61586 states have (on average 1.3438768551294125) internal successors, (82764), 61904 states have internal predecessors, (82764), 2638 states have call successors, (2638), 1058 states have call predecessors, (2638), 1048 states have return successors, (5684), 2418 states have call predecessors, (5684), 2638 states have call successors, (5684) [2021-11-23 01:13:45,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65325 states to 65325 states and 91086 transitions. [2021-11-23 01:13:45,372 INFO L78 Accepts]: Start accepts. Automaton has 65325 states and 91086 transitions. Word has length 111 [2021-11-23 01:13:45,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:13:45,372 INFO L470 AbstractCegarLoop]: Abstraction has 65325 states and 91086 transitions. [2021-11-23 01:13:45,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:13:45,375 INFO L276 IsEmpty]: Start isEmpty. Operand 65325 states and 91086 transitions. [2021-11-23 01:13:45,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-23 01:13:45,376 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:13:45,377 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:13:45,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 01:13:45,377 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-23 01:13:45,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:13:45,378 INFO L85 PathProgramCache]: Analyzing trace with hash 492468230, now seen corresponding path program 1 times [2021-11-23 01:13:45,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:13:45,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547880125] [2021-11-23 01:13:45,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:13:45,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:13:45,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:13:45,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:13:45,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:13:45,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547880125] [2021-11-23 01:13:45,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547880125] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:13:45,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:13:45,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 01:13:45,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139446655] [2021-11-23 01:13:45,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:13:45,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:13:45,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:13:45,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:13:45,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:13:45,868 INFO L87 Difference]: Start difference. First operand 65325 states and 91086 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:13:47,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:13:47,022 INFO L93 Difference]: Finished difference Result 65325 states and 91086 transitions. [2021-11-23 01:13:47,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:13:47,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-23 01:13:47,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:13:47,278 INFO L225 Difference]: With dead ends: 65325 [2021-11-23 01:13:47,279 INFO L226 Difference]: Without dead ends: 65323 [2021-11-23 01:13:47,312 INFO L932 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 [2021-11-23 01:13:47,313 INFO L933 BasicCegarLoop]: 3796 mSDtfsCounter, 3687 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3687 SdHoareTripleChecker+Valid, 3796 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 01:13:47,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3687 Valid, 3796 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 01:13:47,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65323 states. [2021-11-23 01:13:48,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65323 to 65323. [2021-11-23 01:13:48,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65323 states, 61585 states have (on average 1.3438662011853535) internal successors, (82762), 61902 states have internal predecessors, (82762), 2638 states have call successors, (2638), 1058 states have call predecessors, (2638), 1048 states have return successors, (5684), 2418 states have call predecessors, (5684), 2638 states have call successors, (5684) [2021-11-23 01:13:49,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65323 states to 65323 states and 91084 transitions. [2021-11-23 01:13:49,053 INFO L78 Accepts]: Start accepts. Automaton has 65323 states and 91084 transitions. Word has length 112 [2021-11-23 01:13:49,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:13:49,053 INFO L470 AbstractCegarLoop]: Abstraction has 65323 states and 91084 transitions. [2021-11-23 01:13:49,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:13:49,053 INFO L276 IsEmpty]: Start isEmpty. Operand 65323 states and 91084 transitions. [2021-11-23 01:13:49,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-23 01:13:49,055 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:13:49,055 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:13:49,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 01:13:49,056 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-23 01:13:49,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:13:49,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1913339899, now seen corresponding path program 1 times [2021-11-23 01:13:49,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:13:49,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32778987] [2021-11-23 01:13:49,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:13:49,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:13:49,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:13:49,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:13:49,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:13:49,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32778987] [2021-11-23 01:13:49,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32778987] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:13:49,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:13:49,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 01:13:49,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358258200] [2021-11-23 01:13:49,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:13:49,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:13:49,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:13:49,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:13:49,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:13:49,502 INFO L87 Difference]: Start difference. First operand 65323 states and 91084 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:13:50,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:13:50,554 INFO L93 Difference]: Finished difference Result 65323 states and 91084 transitions. [2021-11-23 01:13:50,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:13:50,555 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-23 01:13:50,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:13:50,845 INFO L225 Difference]: With dead ends: 65323 [2021-11-23 01:13:50,845 INFO L226 Difference]: Without dead ends: 65321 [2021-11-23 01:13:50,890 INFO L932 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 [2021-11-23 01:13:50,891 INFO L933 BasicCegarLoop]: 3794 mSDtfsCounter, 3684 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3684 SdHoareTripleChecker+Valid, 3794 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 01:13:50,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3684 Valid, 3794 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 01:13:50,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65321 states. [2021-11-23 01:13:52,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65321 to 65321. [2021-11-23 01:13:52,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65321 states, 61584 states have (on average 1.3438555468952975) internal successors, (82760), 61900 states have internal predecessors, (82760), 2638 states have call successors, (2638), 1058 states have call predecessors, (2638), 1048 states have return successors, (5684), 2418 states have call predecessors, (5684), 2638 states have call successors, (5684) [2021-11-23 01:13:52,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65321 states to 65321 states and 91082 transitions. [2021-11-23 01:13:52,881 INFO L78 Accepts]: Start accepts. Automaton has 65321 states and 91082 transitions. Word has length 113 [2021-11-23 01:13:52,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:13:52,882 INFO L470 AbstractCegarLoop]: Abstraction has 65321 states and 91082 transitions. [2021-11-23 01:13:52,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:13:52,882 INFO L276 IsEmpty]: Start isEmpty. Operand 65321 states and 91082 transitions. [2021-11-23 01:13:52,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-23 01:13:52,883 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:13:52,883 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:13:52,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 01:13:52,884 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-23 01:13:52,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:13:52,884 INFO L85 PathProgramCache]: Analyzing trace with hash 816019441, now seen corresponding path program 1 times [2021-11-23 01:13:52,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:13:52,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657715210] [2021-11-23 01:13:52,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:13:52,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:13:53,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:13:53,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:13:53,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:13:53,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657715210] [2021-11-23 01:13:53,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657715210] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:13:53,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:13:53,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 01:13:53,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721949779] [2021-11-23 01:13:53,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:13:53,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:13:53,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:13:53,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:13:53,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:13:53,131 INFO L87 Difference]: Start difference. First operand 65321 states and 91082 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:13:54,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:13:54,526 INFO L93 Difference]: Finished difference Result 65321 states and 91082 transitions. [2021-11-23 01:13:54,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:13:54,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-23 01:13:54,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:13:54,817 INFO L225 Difference]: With dead ends: 65321 [2021-11-23 01:13:54,818 INFO L226 Difference]: Without dead ends: 65319 [2021-11-23 01:13:54,864 INFO L932 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 [2021-11-23 01:13:54,866 INFO L933 BasicCegarLoop]: 3792 mSDtfsCounter, 3681 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3681 SdHoareTripleChecker+Valid, 3792 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 01:13:54,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3681 Valid, 3792 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 01:13:54,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65319 states. [2021-11-23 01:13:56,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65319 to 65319. [2021-11-23 01:13:56,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65319 states, 61583 states have (on average 1.3438448922592274) internal successors, (82758), 61898 states have internal predecessors, (82758), 2638 states have call successors, (2638), 1058 states have call predecessors, (2638), 1048 states have return successors, (5684), 2418 states have call predecessors, (5684), 2638 states have call successors, (5684) [2021-11-23 01:13:56,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65319 states to 65319 states and 91080 transitions. [2021-11-23 01:13:56,621 INFO L78 Accepts]: Start accepts. Automaton has 65319 states and 91080 transitions. Word has length 114 [2021-11-23 01:13:56,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:13:56,622 INFO L470 AbstractCegarLoop]: Abstraction has 65319 states and 91080 transitions. [2021-11-23 01:13:56,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:13:56,622 INFO L276 IsEmpty]: Start isEmpty. Operand 65319 states and 91080 transitions. [2021-11-23 01:13:56,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 01:13:56,623 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:13:56,624 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:13:56,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 01:13:56,624 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-23 01:13:56,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:13:56,624 INFO L85 PathProgramCache]: Analyzing trace with hash -473186928, now seen corresponding path program 1 times [2021-11-23 01:13:56,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:13:56,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376926287] [2021-11-23 01:13:56,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:13:56,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:13:56,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:13:56,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:13:56,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:13:56,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376926287] [2021-11-23 01:13:56,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376926287] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:13:56,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:13:56,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 01:13:56,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729932863] [2021-11-23 01:13:56,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:13:56,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:13:56,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:13:56,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:13:56,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:13:56,841 INFO L87 Difference]: Start difference. First operand 65319 states and 91080 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:13:58,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:13:58,374 INFO L93 Difference]: Finished difference Result 65319 states and 91080 transitions. [2021-11-23 01:13:58,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:13:58,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 01:13:58,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:13:58,617 INFO L225 Difference]: With dead ends: 65319 [2021-11-23 01:13:58,617 INFO L226 Difference]: Without dead ends: 65278 [2021-11-23 01:13:58,660 INFO L932 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 [2021-11-23 01:13:58,661 INFO L933 BasicCegarLoop]: 3758 mSDtfsCounter, 3088 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3088 SdHoareTripleChecker+Valid, 4273 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:13:58,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3088 Valid, 4273 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:13:58,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65278 states. [2021-11-23 01:14:00,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65278 to 65278. [2021-11-23 01:14:00,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65278 states, 61554 states have (on average 1.3403678071287) internal successors, (82505), 61857 states have internal predecessors, (82505), 2638 states have call successors, (2638), 1058 states have call predecessors, (2638), 1048 states have return successors, (5684), 2418 states have call predecessors, (5684), 2638 states have call successors, (5684) [2021-11-23 01:14:00,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65278 states to 65278 states and 90827 transitions. [2021-11-23 01:14:00,511 INFO L78 Accepts]: Start accepts. Automaton has 65278 states and 90827 transitions. Word has length 115 [2021-11-23 01:14:00,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:14:00,511 INFO L470 AbstractCegarLoop]: Abstraction has 65278 states and 90827 transitions. [2021-11-23 01:14:00,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:14:00,512 INFO L276 IsEmpty]: Start isEmpty. Operand 65278 states and 90827 transitions. [2021-11-23 01:14:00,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-23 01:14:00,517 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:14:00,517 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:14:00,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 01:14:00,518 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting serial_port_activateErr1ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-23 01:14:00,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:14:00,518 INFO L85 PathProgramCache]: Analyzing trace with hash 738419854, now seen corresponding path program 1 times [2021-11-23 01:14:00,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:14:00,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219761422] [2021-11-23 01:14:00,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:14:00,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:14:00,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:14:01,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-23 01:14:01,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:14:01,034 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:14:01,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:14:01,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219761422] [2021-11-23 01:14:01,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219761422] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:14:01,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:14:01,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 01:14:01,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575646802] [2021-11-23 01:14:01,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:14:01,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 01:14:01,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:14:01,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 01:14:01,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 01:14:01,037 INFO L87 Difference]: Start difference. First operand 65278 states and 90827 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 01:14:03,225 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:14:06,568 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:14:19,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:14:19,714 INFO L93 Difference]: Finished difference Result 205048 states and 286291 transitions. [2021-11-23 01:14:19,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 01:14:19,715 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 145 [2021-11-23 01:14:19,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:14:20,473 INFO L225 Difference]: With dead ends: 205048 [2021-11-23 01:14:20,474 INFO L226 Difference]: Without dead ends: 139854 [2021-11-23 01:14:20,995 INFO L932 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 [2021-11-23 01:14:20,995 INFO L933 BasicCegarLoop]: 5450 mSDtfsCounter, 4477 mSDsluCounter, 6142 mSDsCounter, 0 mSdLazyCounter, 2886 mSolverCounterSat, 300 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4514 SdHoareTripleChecker+Valid, 11592 SdHoareTripleChecker+Invalid, 3187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 2886 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2021-11-23 01:14:20,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4514 Valid, 11592 Invalid, 3187 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [300 Valid, 2886 Invalid, 1 Unknown, 0 Unchecked, 14.2s Time] [2021-11-23 01:14:21,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139854 states. [2021-11-23 01:14:24,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139854 to 136136. [2021-11-23 01:14:24,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136136 states, 127970 states have (on average 1.3357740095334845) internal successors, (170939), 128621 states have internal predecessors, (170939), 5340 states have call successors, (5340), 2116 states have call predecessors, (5340), 2788 states have return successors, (14288), 5558 states have call predecessors, (14288), 5340 states have call successors, (14288) [2021-11-23 01:14:25,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136136 states to 136136 states and 190567 transitions. [2021-11-23 01:14:25,743 INFO L78 Accepts]: Start accepts. Automaton has 136136 states and 190567 transitions. Word has length 145 [2021-11-23 01:14:25,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:14:25,744 INFO L470 AbstractCegarLoop]: Abstraction has 136136 states and 190567 transitions. [2021-11-23 01:14:25,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 01:14:25,744 INFO L276 IsEmpty]: Start isEmpty. Operand 136136 states and 190567 transitions. [2021-11-23 01:14:25,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-23 01:14:25,747 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:14:25,747 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:14:25,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 01:14:25,748 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting usb_serial_probeErr1ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-23 01:14:25,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:14:25,748 INFO L85 PathProgramCache]: Analyzing trace with hash 273553533, now seen corresponding path program 1 times [2021-11-23 01:14:25,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:14:25,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107000986] [2021-11-23 01:14:25,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:14:25,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:14:26,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:14:26,470 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:14:26,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:14:26,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107000986] [2021-11-23 01:14:26,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107000986] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:14:26,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:14:26,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:14:26,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845098405] [2021-11-23 01:14:26,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:14:26,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:14:26,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:14:26,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:14:26,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:14:26,472 INFO L87 Difference]: Start difference. First operand 136136 states and 190567 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:14:30,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:14:30,082 INFO L93 Difference]: Finished difference Result 206390 states and 288615 transitions. [2021-11-23 01:14:30,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:14:30,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-11-23 01:14:30,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:14:30,366 INFO L225 Difference]: With dead ends: 206390 [2021-11-23 01:14:30,366 INFO L226 Difference]: Without dead ends: 70338 [2021-11-23 01:14:30,813 INFO L932 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 [2021-11-23 01:14:30,814 INFO L933 BasicCegarLoop]: 3766 mSDtfsCounter, 3760 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3760 SdHoareTripleChecker+Valid, 3769 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:14:30,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3760 Valid, 3769 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:14:30,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70338 states.