./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 5f08f0f0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash bf654a6a1eca45ac77a809162568fb8018795c05fa9eb6946186269d2e2c9c25 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 18:50:10,500 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 18:50:10,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 18:50:10,539 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 18:50:10,540 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 18:50:10,542 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 18:50:10,543 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 18:50:10,547 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 18:50:10,549 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 18:50:10,552 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 18:50:10,553 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 18:50:10,554 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 18:50:10,554 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 18:50:10,556 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 18:50:10,557 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 18:50:10,559 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 18:50:10,560 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 18:50:10,561 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 18:50:10,568 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 18:50:10,569 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 18:50:10,570 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 18:50:10,574 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 18:50:10,575 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 18:50:10,576 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 18:50:10,580 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 18:50:10,582 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 18:50:10,582 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 18:50:10,583 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 18:50:10,584 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 18:50:10,585 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 18:50:10,585 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 18:50:10,585 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 18:50:10,586 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 18:50:10,587 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 18:50:10,588 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 18:50:10,588 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 18:50:10,589 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 18:50:10,589 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 18:50:10,589 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 18:50:10,590 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 18:50:10,591 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 18:50:10,594 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 18:50:10,614 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 18:50:10,615 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 18:50:10,615 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 18:50:10,615 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 18:50:10,616 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 18:50:10,616 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 18:50:10,616 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 18:50:10,617 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 18:50:10,617 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 18:50:10,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 18:50:10,618 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 18:50:10,618 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 18:50:10,618 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 18:50:10,618 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 18:50:10,618 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 18:50:10,619 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 18:50:10,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 18:50:10,619 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 18:50:10,619 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 18:50:10,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 18:50:10,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 18:50:10,620 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 18:50:10,620 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 18:50:10,620 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 18:50:10,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 18:50:10,621 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 18:50:10,621 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 18:50:10,621 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 18:50:10,621 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 18:50:10,621 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf654a6a1eca45ac77a809162568fb8018795c05fa9eb6946186269d2e2c9c25 [2021-11-05 18:50:10,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 18:50:10,883 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 18:50:10,885 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 18:50:10,886 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 18:50:10,887 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 18:50:10,888 INFO L432 ainManager$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 [2021-11-05 18:50:10,928 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62f587839/878bc1c7fe644e90bb95b94ac6d0b23a/FLAG2bb9e4f73 [2021-11-05 18:50:11,504 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 18:50:11,505 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 [2021-11-05 18:50:11,544 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62f587839/878bc1c7fe644e90bb95b94ac6d0b23a/FLAG2bb9e4f73 [2021-11-05 18:50:11,671 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62f587839/878bc1c7fe644e90bb95b94ac6d0b23a [2021-11-05 18:50:11,673 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 18:50:11,674 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 18:50:11,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 18:50:11,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 18:50:11,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 18:50:11,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 06:50:11" (1/1) ... [2021-11-05 18:50:11,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39de635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:50:11, skipping insertion in model container [2021-11-05 18:50:11,681 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 06:50:11" (1/1) ... [2021-11-05 18:50:11,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 18:50:11,801 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 18:50:13,527 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[323188,323201] [2021-11-05 18:50:13,666 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 18:50:13,729 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 18:50:14,146 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[323188,323201] [2021-11-05 18:50:14,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 18:50:14,301 INFO L208 MainTranslator]: Completed translation [2021-11-05 18:50:14,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:50:14 WrapperNode [2021-11-05 18:50:14,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 18:50:14,304 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 18:50:14,304 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 18:50:14,304 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 18:50:14,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:50:14" (1/1) ... [2021-11-05 18:50:14,415 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:50:14" (1/1) ... [2021-11-05 18:50:14,759 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 18:50:14,760 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 18:50:14,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 18:50:14,760 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 18:50:14,770 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:50:14" (1/1) ... [2021-11-05 18:50:14,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:50:14" (1/1) ... [2021-11-05 18:50:14,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:50:14" (1/1) ... [2021-11-05 18:50:14,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:50:14" (1/1) ... [2021-11-05 18:50:15,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:50:14" (1/1) ... [2021-11-05 18:50:15,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:50:14" (1/1) ... [2021-11-05 18:50:15,238 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:50:14" (1/1) ... [2021-11-05 18:50:15,361 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 18:50:15,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 18:50:15,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 18:50:15,362 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 18:50:15,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:50:14" (1/1) ... [2021-11-05 18:50:15,383 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 18:50:15,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 18:50:15,410 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-05 18:50:15,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-05 18:50:15,454 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_dtr_rts [2021-11-05 18:50:15,454 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_dtr_rts [2021-11-05 18:50:15,454 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_remove [2021-11-05 18:50:15,455 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_remove [2021-11-05 18:50:15,455 INFO L130 BoogieDeclarations]: Found specification of procedure serial_chars_in_buffer [2021-11-05 18:50:15,455 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_chars_in_buffer [2021-11-05 18:50:15,455 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_activate [2021-11-05 18:50:15,455 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_activate [2021-11-05 18:50:15,456 INFO L130 BoogieDeclarations]: Found specification of procedure serial_ioctl [2021-11-05 18:50:15,456 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_ioctl [2021-11-05 18:50:15,456 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write_room [2021-11-05 18:50:15,456 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write_room [2021-11-05 18:50:15,456 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-05 18:50:15,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-05 18:50:15,456 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_probe [2021-11-05 18:50:15,456 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_probe [2021-11-05 18:50:15,457 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-05 18:50:15,457 INFO L130 BoogieDeclarations]: Found specification of procedure serial_get_icount [2021-11-05 18:50:15,457 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_get_icount [2021-11-05 18:50:15,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 18:50:15,457 INFO L130 BoogieDeclarations]: Found specification of procedure serial_cleanup [2021-11-05 18:50:15,457 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_cleanup [2021-11-05 18:50:15,457 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_carrier_raised [2021-11-05 18:50:15,457 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_carrier_raised [2021-11-05 18:50:15,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 18:50:15,458 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2021-11-05 18:50:15,458 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2021-11-05 18:50:15,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 18:50:15,458 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_reset_resume [2021-11-05 18:50:15,458 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_reset_resume [2021-11-05 18:50:15,458 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_read_bulk_callback [2021-11-05 18:50:15,458 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_read_bulk_callback [2021-11-05 18:50:15,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 18:50:15,458 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_shutdown [2021-11-05 18:50:15,459 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_shutdown [2021-11-05 18:50:15,459 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2021-11-05 18:50:15,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2021-11-05 18:50:15,459 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-05 18:50:15,459 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-05 18:50:15,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 18:50:15,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 18:50:15,460 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-05 18:50:15,460 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-05 18:50:15,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-05 18:50:15,460 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-05 18:50:15,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-05 18:50:15,460 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_put [2021-11-05 18:50:15,460 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_put [2021-11-05 18:50:15,460 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_serial [2021-11-05 18:50:15,461 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_serial [2021-11-05 18:50:15,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 18:50:15,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 18:50:15,461 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_start [2021-11-05 18:50:15,461 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_start [2021-11-05 18:50:15,461 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-11-05 18:50:15,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-11-05 18:50:15,461 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-11-05 18:50:15,462 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-11-05 18:50:15,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 18:50:15,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 18:50:15,463 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write [2021-11-05 18:50:15,463 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write [2021-11-05 18:50:15,463 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2021-11-05 18:50:15,464 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2021-11-05 18:50:15,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 18:50:15,464 INFO L130 BoogieDeclarations]: Found specification of procedure serial_unthrottle [2021-11-05 18:50:15,464 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_unthrottle [2021-11-05 18:50:15,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 18:50:15,464 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-05 18:50:15,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-05 18:50:15,465 INFO L130 BoogieDeclarations]: Found specification of procedure serial_throttle [2021-11-05 18:50:15,465 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_throttle [2021-11-05 18:50:15,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 18:50:15,465 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-05 18:50:15,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-05 18:50:15,466 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmget [2021-11-05 18:50:15,466 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmget [2021-11-05 18:50:15,466 INFO L130 BoogieDeclarations]: Found specification of procedure serial_wait_until_sent [2021-11-05 18:50:15,466 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_wait_until_sent [2021-11-05 18:50:15,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 18:50:15,466 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2021-11-05 18:50:15,466 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2021-11-05 18:50:15,466 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2021-11-05 18:50:15,467 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2021-11-05 18:50:15,467 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmset [2021-11-05 18:50:15,467 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmset [2021-11-05 18:50:15,475 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write [2021-11-05 18:50:15,475 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write [2021-11-05 18:50:15,475 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-05 18:50:15,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-05 18:50:15,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 18:50:48,668 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 18:50:48,669 INFO L299 CfgBuilder]: Removed 2331 assume(true) statements. [2021-11-05 18:50:48,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 06:50:48 BoogieIcfgContainer [2021-11-05 18:50:48,674 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 18:50:48,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 18:50:48,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 18:50:48,680 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 18:50:48,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 06:50:11" (1/3) ... [2021-11-05 18:50:48,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@302bb4d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 06:50:48, skipping insertion in model container [2021-11-05 18:50:48,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:50:14" (2/3) ... [2021-11-05 18:50:48,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@302bb4d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 06:50:48, skipping insertion in model container [2021-11-05 18:50:48,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 06:50:48" (3/3) ... [2021-11-05 18:50:48,684 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-11-05 18:50:48,687 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 18:50:48,687 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 53 error locations. [2021-11-05 18:50:48,739 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 18:50:48,743 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-05 18:50:48,744 INFO L340 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2021-11-05 18:50:48,782 INFO L276 IsEmpty]: Start isEmpty. Operand has 2747 states, 2544 states have (on average 1.39937106918239) internal successors, (3560), 2606 states have internal predecessors, (3560), 112 states have call successors, (112), 37 states have call predecessors, (112), 37 states have return successors, (112), 105 states have call predecessors, (112), 112 states have call successors, (112) [2021-11-05 18:50:48,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-05 18:50:48,790 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:50:48,790 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] [2021-11-05 18:50:48,791 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)] === [2021-11-05 18:50:48,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:50:48,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1101246796, now seen corresponding path program 1 times [2021-11-05 18:50:48,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:50:48,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077517523] [2021-11-05 18:50:48,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:50:48,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:50:49,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:50:49,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:50:49,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:50:49,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077517523] [2021-11-05 18:50:49,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077517523] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:50:49,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:50:49,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 18:50:49,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418440455] [2021-11-05 18:50:49,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:50:49,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 18:50:49,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:50:49,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 18:50:49,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 18:50:49,632 INFO L87 Difference]: Start difference. First operand has 2747 states, 2544 states have (on average 1.39937106918239) internal successors, (3560), 2606 states have internal predecessors, (3560), 112 states have call successors, (112), 37 states have call predecessors, (112), 37 states have return successors, (112), 105 states have call predecessors, (112), 112 states have call successors, (112) Second operand has 2 states, 2 states have (on average 47.0) internal successors, (94), 2 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:50:49,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:50:49,780 INFO L93 Difference]: Finished difference Result 5490 states and 7662 transitions. [2021-11-05 18:50:49,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 18:50:49,782 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 [2021-11-05 18:50:49,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:50:49,810 INFO L225 Difference]: With dead ends: 5490 [2021-11-05 18:50:49,811 INFO L226 Difference]: Without dead ends: 2732 [2021-11-05 18:50:49,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 18:50:49,831 INFO L933 BasicCegarLoop]: 3661 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3661 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.15ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 18:50:49,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3661 Invalid, 0 Unknown, 0 Unchecked, 13.15ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 18:50:49,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2021-11-05 18:50:49,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 2732. [2021-11-05 18:50:49,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2732 states, 2530 states have (on average 1.3482213438735178) internal successors, (3411), 2591 states have internal predecessors, (3411), 112 states have call successors, (112), 37 states have call predecessors, (112), 37 states have return successors, (112), 105 states have call predecessors, (112), 112 states have call successors, (112) [2021-11-05 18:50:49,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2732 states to 2732 states and 3635 transitions. [2021-11-05 18:50:49,987 INFO L78 Accepts]: Start accepts. Automaton has 2732 states and 3635 transitions. Word has length 95 [2021-11-05 18:50:49,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:50:49,987 INFO L470 AbstractCegarLoop]: Abstraction has 2732 states and 3635 transitions. [2021-11-05 18:50:49,988 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) [2021-11-05 18:50:49,988 INFO L276 IsEmpty]: Start isEmpty. Operand 2732 states and 3635 transitions. [2021-11-05 18:50:49,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-05 18:50:49,992 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:50:49,992 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] [2021-11-05 18:50:49,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 18:50:49,993 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)] === [2021-11-05 18:50:49,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:50:49,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1092627974, now seen corresponding path program 1 times [2021-11-05 18:50:49,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:50:49,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006819544] [2021-11-05 18:50:49,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:50:49,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:50:50,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:50:50,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:50:50,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:50:50,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006819544] [2021-11-05 18:50:50,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006819544] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:50:50,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:50:50,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 18:50:50,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275117912] [2021-11-05 18:50:50,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:50:50,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:50:50,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:50:50,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:50:50,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:50:50,561 INFO L87 Difference]: Start difference. First operand 2732 states and 3635 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:50:50,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:50:50,937 INFO L93 Difference]: Finished difference Result 7992 states and 10730 transitions. [2021-11-05 18:50:50,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:50:50,937 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 [2021-11-05 18:50:50,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:50:50,976 INFO L225 Difference]: With dead ends: 7992 [2021-11-05 18:50:50,976 INFO L226 Difference]: Without dead ends: 5344 [2021-11-05 18:50:50,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.96ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:50:50,990 INFO L933 BasicCegarLoop]: 3793 mSDtfsCounter, 3606 mSDsluCounter, 3540 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 170.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3606 SdHoareTripleChecker+Valid, 7333 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.48ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 200.71ms IncrementalHoareTripleChecker+Time [2021-11-05 18:50:50,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3606 Valid, 7333 Invalid, 38 Unknown, 0 Unchecked, 20.48ms Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 200.71ms Time] [2021-11-05 18:50:50,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5344 states. [2021-11-05 18:50:51,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5344 to 5200. [2021-11-05 18:50:51,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5200 states, 4858 states have (on average 1.355290242898312) internal successors, (6584), 4926 states have internal predecessors, (6584), 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) [2021-11-05 18:50:51,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5200 states to 5200 states and 7091 transitions. [2021-11-05 18:50:51,135 INFO L78 Accepts]: Start accepts. Automaton has 5200 states and 7091 transitions. Word has length 95 [2021-11-05 18:50:51,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:50:51,141 INFO L470 AbstractCegarLoop]: Abstraction has 5200 states and 7091 transitions. [2021-11-05 18:50:51,142 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) [2021-11-05 18:50:51,142 INFO L276 IsEmpty]: Start isEmpty. Operand 5200 states and 7091 transitions. [2021-11-05 18:50:51,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-05 18:50:51,148 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:50:51,149 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] [2021-11-05 18:50:51,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 18:50:51,149 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)] === [2021-11-05 18:50:51,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:50:51,150 INFO L85 PathProgramCache]: Analyzing trace with hash -68543981, now seen corresponding path program 1 times [2021-11-05 18:50:51,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:50:51,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987656218] [2021-11-05 18:50:51,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:50:51,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:50:51,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:50:51,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:50:51,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:50:51,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987656218] [2021-11-05 18:50:51,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987656218] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:50:51,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:50:51,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 18:50:51,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75502388] [2021-11-05 18:50:51,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:50:51,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:50:51,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:50:51,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:50:51,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:50:51,627 INFO L87 Difference]: Start difference. First operand 5200 states and 7091 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) [2021-11-05 18:50:52,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:50:52,175 INFO L93 Difference]: Finished difference Result 14415 states and 19623 transitions. [2021-11-05 18:50:52,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:50:52,176 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 [2021-11-05 18:50:52,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:50:52,225 INFO L225 Difference]: With dead ends: 14415 [2021-11-05 18:50:52,226 INFO L226 Difference]: Without dead ends: 9299 [2021-11-05 18:50:52,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.93ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:50:52,258 INFO L933 BasicCegarLoop]: 3733 mSDtfsCounter, 2947 mSDsluCounter, 3443 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 268.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2947 SdHoareTripleChecker+Valid, 7176 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.88ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 334.75ms IncrementalHoareTripleChecker+Time [2021-11-05 18:50:52,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2947 Valid, 7176 Invalid, 98 Unknown, 0 Unchecked, 15.88ms Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 334.75ms Time] [2021-11-05 18:50:52,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9299 states. [2021-11-05 18:50:52,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9299 to 9136. [2021-11-05 18:50:52,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9136 states, 8582 states have (on average 1.3556280587275693) internal successors, (11634), 8664 states have internal predecessors, (11634), 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) [2021-11-05 18:50:52,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9136 states to 9136 states and 12496 transitions. [2021-11-05 18:50:52,498 INFO L78 Accepts]: Start accepts. Automaton has 9136 states and 12496 transitions. Word has length 98 [2021-11-05 18:50:52,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:50:52,500 INFO L470 AbstractCegarLoop]: Abstraction has 9136 states and 12496 transitions. [2021-11-05 18:50:52,500 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) [2021-11-05 18:50:52,500 INFO L276 IsEmpty]: Start isEmpty. Operand 9136 states and 12496 transitions. [2021-11-05 18:50:52,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-05 18:50:52,505 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:50:52,505 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] [2021-11-05 18:50:52,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 18:50:52,506 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)] === [2021-11-05 18:50:52,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:50:52,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1351220361, now seen corresponding path program 1 times [2021-11-05 18:50:52,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:50:52,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514506402] [2021-11-05 18:50:52,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:50:52,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:50:52,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:50:52,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:50:52,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:50:52,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514506402] [2021-11-05 18:50:52,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514506402] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:50:52,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:50:52,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 18:50:52,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066996895] [2021-11-05 18:50:52,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:50:52,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:50:52,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:50:52,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:50:52,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:50:52,907 INFO L87 Difference]: Start difference. First operand 9136 states and 12496 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) [2021-11-05 18:50:53,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:50:53,385 INFO L93 Difference]: Finished difference Result 26232 states and 36121 transitions. [2021-11-05 18:50:53,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:50:53,386 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 [2021-11-05 18:50:53,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:50:53,492 INFO L225 Difference]: With dead ends: 26232 [2021-11-05 18:50:53,493 INFO L226 Difference]: Without dead ends: 17180 [2021-11-05 18:50:53,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.95ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:50:53,541 INFO L933 BasicCegarLoop]: 4462 mSDtfsCounter, 3417 mSDsluCounter, 3504 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 125.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3417 SdHoareTripleChecker+Valid, 7966 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.38ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 146.62ms IncrementalHoareTripleChecker+Time [2021-11-05 18:50:53,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3417 Valid, 7966 Invalid, 34 Unknown, 0 Unchecked, 13.38ms Time], IncrementalHoareTripleChecker [9 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 146.62ms Time] [2021-11-05 18:50:53,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17180 states. [2021-11-05 18:50:53,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17180 to 16956. [2021-11-05 18:50:53,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16956 states, 15945 states have (on average 1.359799310128567) internal successors, (21682), 16049 states have internal predecessors, (21682), 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) [2021-11-05 18:50:53,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16956 states to 16956 states and 23518 transitions. [2021-11-05 18:50:53,980 INFO L78 Accepts]: Start accepts. Automaton has 16956 states and 23518 transitions. Word has length 103 [2021-11-05 18:50:53,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:50:53,981 INFO L470 AbstractCegarLoop]: Abstraction has 16956 states and 23518 transitions. [2021-11-05 18:50:53,982 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) [2021-11-05 18:50:53,982 INFO L276 IsEmpty]: Start isEmpty. Operand 16956 states and 23518 transitions. [2021-11-05 18:50:53,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-05 18:50:53,983 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:50:53,983 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:50:53,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 18:50:53,984 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)] === [2021-11-05 18:50:53,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:50:53,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1042989265, now seen corresponding path program 1 times [2021-11-05 18:50:53,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:50:53,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21523848] [2021-11-05 18:50:53,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:50:53,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:50:54,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:50:54,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:50:54,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:50:54,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21523848] [2021-11-05 18:50:54,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21523848] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:50:54,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:50:54,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 18:50:54,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997812508] [2021-11-05 18:50:54,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:50:54,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:50:54,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:50:54,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:50:54,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:50:54,483 INFO L87 Difference]: Start difference. First operand 16956 states and 23518 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) [2021-11-05 18:50:56,590 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:50:57,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:50:57,288 INFO L93 Difference]: Finished difference Result 49737 states and 69174 transitions. [2021-11-05 18:50:57,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:50:57,289 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 [2021-11-05 18:50:57,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:50:57,444 INFO L225 Difference]: With dead ends: 49737 [2021-11-05 18:50:57,445 INFO L226 Difference]: Without dead ends: 32865 [2021-11-05 18:50:57,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.02ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:50:57,514 INFO L933 BasicCegarLoop]: 4424 mSDtfsCounter, 3436 mSDsluCounter, 3414 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2113.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3436 SdHoareTripleChecker+Valid, 7838 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.78ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2208.17ms IncrementalHoareTripleChecker+Time [2021-11-05 18:50:57,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3436 Valid, 7838 Invalid, 15 Unknown, 0 Unchecked, 9.78ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2208.17ms Time] [2021-11-05 18:50:57,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32865 states. [2021-11-05 18:50:58,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32865 to 32781. [2021-11-05 18:50:58,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32781 states, 30812 states have (on average 1.3635596520836037) internal successors, (42014), 30968 states have internal predecessors, (42014), 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) [2021-11-05 18:50:58,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32781 states to 32781 states and 45686 transitions. [2021-11-05 18:50:58,319 INFO L78 Accepts]: Start accepts. Automaton has 32781 states and 45686 transitions. Word has length 103 [2021-11-05 18:50:58,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:50:58,320 INFO L470 AbstractCegarLoop]: Abstraction has 32781 states and 45686 transitions. [2021-11-05 18:50:58,320 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) [2021-11-05 18:50:58,321 INFO L276 IsEmpty]: Start isEmpty. Operand 32781 states and 45686 transitions. [2021-11-05 18:50:58,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-05 18:50:58,323 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:50:58,323 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:50:58,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 18:50:58,324 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)] === [2021-11-05 18:50:58,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:50:58,325 INFO L85 PathProgramCache]: Analyzing trace with hash -480392852, now seen corresponding path program 1 times [2021-11-05 18:50:58,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:50:58,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429970888] [2021-11-05 18:50:58,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:50:58,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:50:58,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:50:58,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:50:58,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:50:58,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429970888] [2021-11-05 18:50:58,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429970888] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:50:58,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:50:58,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 18:50:58,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316277260] [2021-11-05 18:50:58,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:50:58,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:50:58,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:50:58,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:50:58,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:50:58,886 INFO L87 Difference]: Start difference. First operand 32781 states and 45686 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:51:00,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:51:00,371 INFO L93 Difference]: Finished difference Result 94753 states and 134594 transitions. [2021-11-05 18:51:00,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:51:00,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-05 18:51:00,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:51:00,748 INFO L225 Difference]: With dead ends: 94753 [2021-11-05 18:51:00,749 INFO L226 Difference]: Without dead ends: 62056 [2021-11-05 18:51:00,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.80ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:51:00,962 INFO L933 BasicCegarLoop]: 4079 mSDtfsCounter, 3383 mSDsluCounter, 3332 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 86.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3383 SdHoareTripleChecker+Valid, 7411 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.75ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 111.45ms IncrementalHoareTripleChecker+Time [2021-11-05 18:51:00,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3383 Valid, 7411 Invalid, 106 Unknown, 0 Unchecked, 10.75ms Time], IncrementalHoareTripleChecker [41 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 111.45ms Time] [2021-11-05 18:51:01,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62056 states. [2021-11-05 18:51:02,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62056 to 61795. [2021-11-05 18:51:02,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61795 states, 58056 states have (on average 1.3647857241284278) internal successors, (79234), 58374 states have internal predecessors, (79234), 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) [2021-11-05 18:51:02,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61795 states to 61795 states and 87556 transitions. [2021-11-05 18:51:02,833 INFO L78 Accepts]: Start accepts. Automaton has 61795 states and 87556 transitions. Word has length 110 [2021-11-05 18:51:02,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:51:02,833 INFO L470 AbstractCegarLoop]: Abstraction has 61795 states and 87556 transitions. [2021-11-05 18:51:02,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:51:02,833 INFO L276 IsEmpty]: Start isEmpty. Operand 61795 states and 87556 transitions. [2021-11-05 18:51:02,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-05 18:51:02,835 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:51:02,835 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] [2021-11-05 18:51:02,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 18:51:02,835 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)] === [2021-11-05 18:51:02,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:51:02,836 INFO L85 PathProgramCache]: Analyzing trace with hash -2007263563, now seen corresponding path program 1 times [2021-11-05 18:51:02,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:51:02,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868430849] [2021-11-05 18:51:02,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:51:02,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:51:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:51:03,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:51:03,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:51:03,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868430849] [2021-11-05 18:51:03,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868430849] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:51:03,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:51:03,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 18:51:03,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679534345] [2021-11-05 18:51:03,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:51:03,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:51:03,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:51:03,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:51:03,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:51:03,213 INFO L87 Difference]: Start difference. First operand 61795 states and 87556 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) [2021-11-05 18:51:04,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:51:04,277 INFO L93 Difference]: Finished difference Result 61795 states and 87556 transitions. [2021-11-05 18:51:04,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:51:04,278 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 [2021-11-05 18:51:04,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:51:04,639 INFO L225 Difference]: With dead ends: 61795 [2021-11-05 18:51:04,640 INFO L226 Difference]: Without dead ends: 61793 [2021-11-05 18:51:04,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.73ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:51:04,666 INFO L933 BasicCegarLoop]: 3632 mSDtfsCounter, 3524 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3524 SdHoareTripleChecker+Valid, 3632 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.67ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.32ms IncrementalHoareTripleChecker+Time [2021-11-05 18:51:04,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3524 Valid, 3632 Invalid, 1 Unknown, 0 Unchecked, 5.67ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.32ms Time] [2021-11-05 18:51:04,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61793 states. [2021-11-05 18:51:05,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61793 to 61793. [2021-11-05 18:51:05,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61793 states, 58055 states have (on average 1.3647747825338041) internal successors, (79232), 58372 states have internal predecessors, (79232), 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) [2021-11-05 18:51:06,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61793 states to 61793 states and 87554 transitions. [2021-11-05 18:51:06,362 INFO L78 Accepts]: Start accepts. Automaton has 61793 states and 87554 transitions. Word has length 111 [2021-11-05 18:51:06,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:51:06,363 INFO L470 AbstractCegarLoop]: Abstraction has 61793 states and 87554 transitions. [2021-11-05 18:51:06,363 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) [2021-11-05 18:51:06,363 INFO L276 IsEmpty]: Start isEmpty. Operand 61793 states and 87554 transitions. [2021-11-05 18:51:06,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-05 18:51:06,364 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:51:06,364 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] [2021-11-05 18:51:06,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 18:51:06,365 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)] === [2021-11-05 18:51:06,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:51:06,366 INFO L85 PathProgramCache]: Analyzing trace with hash -2095615338, now seen corresponding path program 1 times [2021-11-05 18:51:06,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:51:06,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801853906] [2021-11-05 18:51:06,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:51:06,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:51:06,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:51:06,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:51:06,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:51:06,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801853906] [2021-11-05 18:51:06,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801853906] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:51:06,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:51:06,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 18:51:06,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7599404] [2021-11-05 18:51:06,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:51:06,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:51:06,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:51:06,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:51:06,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:51:06,771 INFO L87 Difference]: Start difference. First operand 61793 states and 87554 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) [2021-11-05 18:51:07,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:51:07,943 INFO L93 Difference]: Finished difference Result 61793 states and 87554 transitions. [2021-11-05 18:51:07,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:51:07,944 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 [2021-11-05 18:51:07,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:51:08,210 INFO L225 Difference]: With dead ends: 61793 [2021-11-05 18:51:08,212 INFO L226 Difference]: Without dead ends: 61791 [2021-11-05 18:51:08,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.70ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:51:08,248 INFO L933 BasicCegarLoop]: 3630 mSDtfsCounter, 3521 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3521 SdHoareTripleChecker+Valid, 3630 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.03ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.21ms IncrementalHoareTripleChecker+Time [2021-11-05 18:51:08,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3521 Valid, 3630 Invalid, 1 Unknown, 0 Unchecked, 5.03ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.21ms Time] [2021-11-05 18:51:08,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61791 states. [2021-11-05 18:51:09,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61791 to 61791. [2021-11-05 18:51:09,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61791 states, 58054 states have (on average 1.364763840562235) internal successors, (79230), 58370 states have internal predecessors, (79230), 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) [2021-11-05 18:51:09,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61791 states to 61791 states and 87552 transitions. [2021-11-05 18:51:09,995 INFO L78 Accepts]: Start accepts. Automaton has 61791 states and 87552 transitions. Word has length 112 [2021-11-05 18:51:09,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:51:09,996 INFO L470 AbstractCegarLoop]: Abstraction has 61791 states and 87552 transitions. [2021-11-05 18:51:09,996 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) [2021-11-05 18:51:09,997 INFO L276 IsEmpty]: Start isEmpty. Operand 61791 states and 87552 transitions. [2021-11-05 18:51:09,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-05 18:51:09,998 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:51:09,998 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] [2021-11-05 18:51:09,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 18:51:09,999 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)] === [2021-11-05 18:51:09,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:51:09,999 INFO L85 PathProgramCache]: Analyzing trace with hash -539553057, now seen corresponding path program 1 times [2021-11-05 18:51:09,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:51:09,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163220885] [2021-11-05 18:51:10,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:51:10,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:51:10,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:51:10,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:51:10,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:51:10,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163220885] [2021-11-05 18:51:10,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163220885] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:51:10,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:51:10,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 18:51:10,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682220829] [2021-11-05 18:51:10,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:51:10,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:51:10,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:51:10,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:51:10,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:51:10,512 INFO L87 Difference]: Start difference. First operand 61791 states and 87552 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) [2021-11-05 18:51:11,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:51:11,632 INFO L93 Difference]: Finished difference Result 61791 states and 87552 transitions. [2021-11-05 18:51:11,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:51:11,633 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 [2021-11-05 18:51:11,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:51:11,985 INFO L225 Difference]: With dead ends: 61791 [2021-11-05 18:51:11,985 INFO L226 Difference]: Without dead ends: 61789 [2021-11-05 18:51:12,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.87ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:51:12,012 INFO L933 BasicCegarLoop]: 3628 mSDtfsCounter, 3518 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3518 SdHoareTripleChecker+Valid, 3628 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.68ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.32ms IncrementalHoareTripleChecker+Time [2021-11-05 18:51:12,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3518 Valid, 3628 Invalid, 1 Unknown, 0 Unchecked, 5.68ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.32ms Time] [2021-11-05 18:51:12,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61789 states. [2021-11-05 18:51:13,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61789 to 61789. [2021-11-05 18:51:13,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61789 states, 58053 states have (on average 1.3647528982137014) internal successors, (79228), 58368 states have internal predecessors, (79228), 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) [2021-11-05 18:51:13,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61789 states to 61789 states and 87550 transitions. [2021-11-05 18:51:13,789 INFO L78 Accepts]: Start accepts. Automaton has 61789 states and 87550 transitions. Word has length 113 [2021-11-05 18:51:13,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:51:13,790 INFO L470 AbstractCegarLoop]: Abstraction has 61789 states and 87550 transitions. [2021-11-05 18:51:13,790 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) [2021-11-05 18:51:13,790 INFO L276 IsEmpty]: Start isEmpty. Operand 61789 states and 87550 transitions. [2021-11-05 18:51:13,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-05 18:51:13,791 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:51:13,791 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] [2021-11-05 18:51:13,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 18:51:13,792 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)] === [2021-11-05 18:51:13,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:51:13,792 INFO L85 PathProgramCache]: Analyzing trace with hash 453737408, now seen corresponding path program 1 times [2021-11-05 18:51:13,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:51:13,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249292627] [2021-11-05 18:51:13,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:51:13,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:51:14,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:51:14,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:51:14,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:51:14,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249292627] [2021-11-05 18:51:14,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249292627] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:51:14,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:51:14,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 18:51:14,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674139265] [2021-11-05 18:51:14,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:51:14,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:51:14,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:51:14,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:51:14,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:51:14,332 INFO L87 Difference]: Start difference. First operand 61789 states and 87550 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) [2021-11-05 18:51:15,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:51:15,670 INFO L93 Difference]: Finished difference Result 61789 states and 87550 transitions. [2021-11-05 18:51:15,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:51:15,670 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 [2021-11-05 18:51:15,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:51:15,919 INFO L225 Difference]: With dead ends: 61789 [2021-11-05 18:51:15,919 INFO L226 Difference]: Without dead ends: 61752 [2021-11-05 18:51:15,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.68ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:51:15,959 INFO L933 BasicCegarLoop]: 3594 mSDtfsCounter, 2956 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2956 SdHoareTripleChecker+Valid, 4078 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.31ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69.44ms IncrementalHoareTripleChecker+Time [2021-11-05 18:51:15,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2956 Valid, 4078 Invalid, 75 Unknown, 0 Unchecked, 10.31ms Time], IncrementalHoareTripleChecker [25 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 69.44ms Time] [2021-11-05 18:51:16,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61752 states. [2021-11-05 18:51:17,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61752 to 61752. [2021-11-05 18:51:17,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61752 states, 58028 states have (on average 1.3610498380092368) internal successors, (78979), 58331 states have internal predecessors, (78979), 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) [2021-11-05 18:51:17,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61752 states to 61752 states and 87301 transitions. [2021-11-05 18:51:17,799 INFO L78 Accepts]: Start accepts. Automaton has 61752 states and 87301 transitions. Word has length 114 [2021-11-05 18:51:17,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:51:17,799 INFO L470 AbstractCegarLoop]: Abstraction has 61752 states and 87301 transitions. [2021-11-05 18:51:17,800 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) [2021-11-05 18:51:17,800 INFO L276 IsEmpty]: Start isEmpty. Operand 61752 states and 87301 transitions. [2021-11-05 18:51:17,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-05 18:51:17,805 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:51:17,806 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] [2021-11-05 18:51:17,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-05 18:51:17,806 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)] === [2021-11-05 18:51:17,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:51:17,806 INFO L85 PathProgramCache]: Analyzing trace with hash -628065741, now seen corresponding path program 1 times [2021-11-05 18:51:17,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:51:17,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271541427] [2021-11-05 18:51:17,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:51:17,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:51:17,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:51:18,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-05 18:51:18,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:51:18,196 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:51:18,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:51:18,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271541427] [2021-11-05 18:51:18,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271541427] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:51:18,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:51:18,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 18:51:18,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851428185] [2021-11-05 18:51:18,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:51:18,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 18:51:18,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:51:18,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 18:51:18,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 18:51:18,199 INFO L87 Difference]: Start difference. First operand 61752 states and 87301 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 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) [2021-11-05 18:51:20,308 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:51:22,612 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:51:28,287 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:51:40,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:51:40,170 INFO L93 Difference]: Finished difference Result 193710 states and 274953 transitions. [2021-11-05 18:51:40,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 18:51:40,170 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 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 142 [2021-11-05 18:51:40,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:51:40,828 INFO L225 Difference]: With dead ends: 193710 [2021-11-05 18:51:40,829 INFO L226 Difference]: Without dead ends: 132042 [2021-11-05 18:51:41,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.37ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:51:41,330 INFO L933 BasicCegarLoop]: 5198 mSDtfsCounter, 4258 mSDsluCounter, 5875 mSDsCounter, 0 mSdLazyCounter, 2763 mSolverCounterSat, 297 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16782.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4283 SdHoareTripleChecker+Valid, 11073 SdHoareTripleChecker+Invalid, 3063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 48.62ms SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 2763 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17969.04ms IncrementalHoareTripleChecker+Time [2021-11-05 18:51:41,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4283 Valid, 11073 Invalid, 3063 Unknown, 0 Unchecked, 48.62ms Time], IncrementalHoareTripleChecker [297 Valid, 2763 Invalid, 3 Unknown, 0 Unchecked, 17969.04ms Time] [2021-11-05 18:51:41,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132042 states. [2021-11-05 18:51:44,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132042 to 128678. [2021-11-05 18:51:44,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128678 states, 120512 states have (on average 1.3565537041954328) internal successors, (163481), 121163 states have internal predecessors, (163481), 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) [2021-11-05 18:51:45,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128678 states to 128678 states and 183109 transitions. [2021-11-05 18:51:45,400 INFO L78 Accepts]: Start accepts. Automaton has 128678 states and 183109 transitions. Word has length 142 [2021-11-05 18:51:45,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:51:45,400 INFO L470 AbstractCegarLoop]: Abstraction has 128678 states and 183109 transitions. [2021-11-05 18:51:45,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 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) [2021-11-05 18:51:45,401 INFO L276 IsEmpty]: Start isEmpty. Operand 128678 states and 183109 transitions. [2021-11-05 18:51:45,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-05 18:51:45,403 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:51:45,404 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] [2021-11-05 18:51:45,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-05 18:51:45,404 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)] === [2021-11-05 18:51:45,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:51:45,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1956909992, now seen corresponding path program 1 times [2021-11-05 18:51:45,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:51:45,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839721621] [2021-11-05 18:51:45,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:51:45,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:51:45,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:51:46,016 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:51:46,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:51:46,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839721621] [2021-11-05 18:51:46,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839721621] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:51:46,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:51:46,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 18:51:46,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34577088] [2021-11-05 18:51:46,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:51:46,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:51:46,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:51:46,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:51:46,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:51:46,018 INFO L87 Difference]: Start difference. First operand 128678 states and 183109 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:51:49,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:51:49,111 INFO L93 Difference]: Finished difference Result 195053 states and 277278 transitions. [2021-11-05 18:51:49,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:51:49,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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 153 [2021-11-05 18:51:49,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:51:49,359 INFO L225 Difference]: With dead ends: 195053 [2021-11-05 18:51:49,359 INFO L226 Difference]: Without dead ends: 66459 [2021-11-05 18:51:49,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.81ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:51:49,736 INFO L933 BasicCegarLoop]: 3601 mSDtfsCounter, 3596 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 96.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3596 SdHoareTripleChecker+Valid, 3603 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.71ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 112.19ms IncrementalHoareTripleChecker+Time [2021-11-05 18:51:49,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3596 Valid, 3603 Invalid, 4 Unknown, 0 Unchecked, 3.71ms Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 112.19ms Time] [2021-11-05 18:51:49,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66459 states. [2021-11-05 18:51:51,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66459 to 64165. [2021-11-05 18:51:51,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64165 states, 60052 states have (on average 1.3571404782521814) internal successors, (81499), 60393 states have internal predecessors, (81499), 2676 states have call successors, (2676), 1063 states have call predecessors, (2676), 1399 states have return successors, (7150), 2788 states have call predecessors, (7150), 2676 states have call successors, (7150) [2021-11-05 18:51:51,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64165 states to 64165 states and 91325 transitions. [2021-11-05 18:51:51,831 INFO L78 Accepts]: Start accepts. Automaton has 64165 states and 91325 transitions. Word has length 153 [2021-11-05 18:51:51,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:51:51,832 INFO L470 AbstractCegarLoop]: Abstraction has 64165 states and 91325 transitions. [2021-11-05 18:51:51,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:51:51,832 INFO L276 IsEmpty]: Start isEmpty. Operand 64165 states and 91325 transitions. [2021-11-05 18:51:51,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-05 18:51:51,834 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:51:51,835 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:51:51,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-05 18:51:51,835 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-05 18:51:51,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:51:51,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1925289297, now seen corresponding path program 1 times [2021-11-05 18:51:51,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:51:51,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48499958] [2021-11-05 18:51:51,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:51:51,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:51:52,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:51:52,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:51:52,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:51:52,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48499958] [2021-11-05 18:51:52,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48499958] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:51:52,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:51:52,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 18:51:52,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194073681] [2021-11-05 18:51:52,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:51:52,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:51:52,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:51:52,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:51:52,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:51:52,360 INFO L87 Difference]: Start difference. First operand 64165 states and 91325 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:51:54,456 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []