./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 267df3d840ee451a69f2c9c23fc4c286b307e31eb8c416518f7dce9b4c82858a --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 06:26:05,242 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 06:26:05,248 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 06:26:05,295 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 06:26:05,296 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 06:26:05,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 06:26:05,300 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 06:26:05,303 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 06:26:05,304 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 06:26:05,308 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 06:26:05,309 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 06:26:05,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 06:26:05,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 06:26:05,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 06:26:05,314 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 06:26:05,317 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 06:26:05,318 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 06:26:05,318 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 06:26:05,320 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 06:26:05,325 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 06:26:05,326 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 06:26:05,327 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 06:26:05,328 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 06:26:05,329 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 06:26:05,335 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 06:26:05,335 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 06:26:05,335 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 06:26:05,336 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 06:26:05,337 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 06:26:05,337 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 06:26:05,338 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 06:26:05,338 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 06:26:05,340 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 06:26:05,341 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 06:26:05,342 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 06:26:05,342 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 06:26:05,343 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 06:26:05,343 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 06:26:05,343 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 06:26:05,345 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 06:26:05,345 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 06:26:05,347 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 06:26:05,376 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 06:26:05,376 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 06:26:05,377 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 06:26:05,377 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 06:26:05,378 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 06:26:05,379 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 06:26:05,379 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 06:26:05,379 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 06:26:05,379 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 06:26:05,379 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 06:26:05,380 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 06:26:05,380 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 06:26:05,380 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 06:26:05,381 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 06:26:05,381 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 06:26:05,381 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 06:26:05,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 06:26:05,381 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 06:26:05,381 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 06:26:05,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 06:26:05,382 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 06:26:05,382 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 06:26:05,382 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 06:26:05,382 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 06:26:05,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 06:26:05,383 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 06:26:05,383 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 06:26:05,384 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 06:26:05,384 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 06:26:05,384 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 267df3d840ee451a69f2c9c23fc4c286b307e31eb8c416518f7dce9b4c82858a [2021-11-04 06:26:05,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 06:26:05,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 06:26:05,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 06:26:05,628 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 06:26:05,629 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 06:26:05,631 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-11-04 06:26:05,704 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0a3e05d2/bb68b4a0c8384ec19a914151238d928f/FLAGcaeb8f203 [2021-11-04 06:26:06,403 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 06:26:06,404 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-11-04 06:26:06,446 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0a3e05d2/bb68b4a0c8384ec19a914151238d928f/FLAGcaeb8f203 [2021-11-04 06:26:06,496 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0a3e05d2/bb68b4a0c8384ec19a914151238d928f [2021-11-04 06:26:06,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 06:26:06,500 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 06:26:06,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 06:26:06,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 06:26:06,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 06:26:06,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 06:26:06" (1/1) ... [2021-11-04 06:26:06,505 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@353a28c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:26:06, skipping insertion in model container [2021-11-04 06:26:06,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 06:26:06" (1/1) ... [2021-11-04 06:26:06,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 06:26:06,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 06:26:08,706 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[313744,313757] [2021-11-04 06:26:08,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 06:26:08,861 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 06:26:09,285 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[313744,313757] [2021-11-04 06:26:09,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 06:26:09,468 INFO L208 MainTranslator]: Completed translation [2021-11-04 06:26:09,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:26:09 WrapperNode [2021-11-04 06:26:09,469 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 06:26:09,471 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 06:26:09,471 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 06:26:09,472 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 06:26:09,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:26:09" (1/1) ... [2021-11-04 06:26:09,587 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:26:09" (1/1) ... [2021-11-04 06:26:09,992 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 06:26:09,993 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 06:26:09,993 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 06:26:09,994 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 06:26:10,008 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:26:09" (1/1) ... [2021-11-04 06:26:10,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:26:09" (1/1) ... [2021-11-04 06:26:10,141 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:26:09" (1/1) ... [2021-11-04 06:26:10,142 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:26:09" (1/1) ... [2021-11-04 06:26:10,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:26:09" (1/1) ... [2021-11-04 06:26:10,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:26:09" (1/1) ... [2021-11-04 06:26:10,461 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:26:09" (1/1) ... [2021-11-04 06:26:10,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 06:26:10,654 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 06:26:10,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 06:26:10,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 06:26:10,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:26:09" (1/1) ... [2021-11-04 06:26:10,662 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 06:26:10,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 06:26:10,713 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-04 06:26:10,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-04 06:26:10,772 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_dtr_rts [2021-11-04 06:26:10,772 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_dtr_rts [2021-11-04 06:26:10,773 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_remove [2021-11-04 06:26:10,773 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_remove [2021-11-04 06:26:10,773 INFO L130 BoogieDeclarations]: Found specification of procedure serial_chars_in_buffer [2021-11-04 06:26:10,774 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_chars_in_buffer [2021-11-04 06:26:10,774 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_activate [2021-11-04 06:26:10,774 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_activate [2021-11-04 06:26:10,774 INFO L130 BoogieDeclarations]: Found specification of procedure serial_ioctl [2021-11-04 06:26:10,774 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_ioctl [2021-11-04 06:26:10,774 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write_room [2021-11-04 06:26:10,774 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write_room [2021-11-04 06:26:10,775 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-04 06:26:10,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-04 06:26:10,775 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_probe [2021-11-04 06:26:10,775 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_probe [2021-11-04 06:26:10,775 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-04 06:26:10,775 INFO L130 BoogieDeclarations]: Found specification of procedure serial_get_icount [2021-11-04 06:26:10,775 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_get_icount [2021-11-04 06:26:10,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 06:26:10,776 INFO L130 BoogieDeclarations]: Found specification of procedure serial_cleanup [2021-11-04 06:26:10,776 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_cleanup [2021-11-04 06:26:10,776 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_carrier_raised [2021-11-04 06:26:10,776 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_carrier_raised [2021-11-04 06:26:10,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 06:26:10,776 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2021-11-04 06:26:10,777 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2021-11-04 06:26:10,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 06:26:10,777 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_reset_resume [2021-11-04 06:26:10,777 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_reset_resume [2021-11-04 06:26:10,777 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_read_bulk_callback [2021-11-04 06:26:10,777 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_read_bulk_callback [2021-11-04 06:26:10,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 06:26:10,778 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_shutdown [2021-11-04 06:26:10,778 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_shutdown [2021-11-04 06:26:10,778 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2021-11-04 06:26:10,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2021-11-04 06:26:10,778 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-04 06:26:10,778 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-04 06:26:10,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 06:26:10,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 06:26:10,779 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-04 06:26:10,779 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-04 06:26:10,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-04 06:26:10,779 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-04 06:26:10,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-04 06:26:10,780 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_put [2021-11-04 06:26:10,780 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_put [2021-11-04 06:26:10,780 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_serial [2021-11-04 06:26:10,780 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_serial [2021-11-04 06:26:10,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 06:26:10,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 06:26:10,781 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_start [2021-11-04 06:26:10,781 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_start [2021-11-04 06:26:10,781 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-11-04 06:26:10,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-11-04 06:26:10,781 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-11-04 06:26:10,781 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-11-04 06:26:10,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 06:26:10,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 06:26:10,783 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write [2021-11-04 06:26:10,783 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write [2021-11-04 06:26:10,783 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2021-11-04 06:26:10,783 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2021-11-04 06:26:10,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 06:26:10,784 INFO L130 BoogieDeclarations]: Found specification of procedure serial_unthrottle [2021-11-04 06:26:10,784 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_unthrottle [2021-11-04 06:26:10,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 06:26:10,784 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-04 06:26:10,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-04 06:26:10,784 INFO L130 BoogieDeclarations]: Found specification of procedure serial_throttle [2021-11-04 06:26:10,785 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_throttle [2021-11-04 06:26:10,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 06:26:10,785 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-04 06:26:10,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-04 06:26:10,786 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmget [2021-11-04 06:26:10,786 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmget [2021-11-04 06:26:10,786 INFO L130 BoogieDeclarations]: Found specification of procedure serial_wait_until_sent [2021-11-04 06:26:10,786 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_wait_until_sent [2021-11-04 06:26:10,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 06:26:10,786 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2021-11-04 06:26:10,786 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2021-11-04 06:26:10,787 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2021-11-04 06:26:10,787 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2021-11-04 06:26:10,787 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmset [2021-11-04 06:26:10,787 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmset [2021-11-04 06:26:10,787 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write [2021-11-04 06:26:10,787 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write [2021-11-04 06:26:10,787 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-04 06:26:10,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-04 06:26:10,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 06:26:34,385 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 06:26:34,386 INFO L299 CfgBuilder]: Removed 2091 assume(true) statements. [2021-11-04 06:26:34,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 06:26:34 BoogieIcfgContainer [2021-11-04 06:26:34,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 06:26:34,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 06:26:34,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 06:26:34,395 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 06:26:34,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 06:26:06" (1/3) ... [2021-11-04 06:26:34,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54ecb32a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 06:26:34, skipping insertion in model container [2021-11-04 06:26:34,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:26:09" (2/3) ... [2021-11-04 06:26:34,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54ecb32a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 06:26:34, skipping insertion in model container [2021-11-04 06:26:34,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 06:26:34" (3/3) ... [2021-11-04 06:26:34,399 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-11-04 06:26:34,405 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 06:26:34,405 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-04 06:26:34,461 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 06:26:34,469 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-04 06:26:34,470 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-04 06:26:34,527 INFO L276 IsEmpty]: Start isEmpty. Operand has 2561 states, 2400 states have (on average 1.3958333333333333) internal successors, (3350), 2420 states have internal predecessors, (3350), 112 states have call successors, (112), 37 states have call predecessors, (112), 37 states have return successors, (112), 105 states have call predecessors, (112), 112 states have call successors, (112) [2021-11-04 06:26:34,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-04 06:26:34,561 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:26:34,562 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 06:26:34,563 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-04 06:26:34,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:26:34,568 INFO L85 PathProgramCache]: Analyzing trace with hash -446975168, now seen corresponding path program 1 times [2021-11-04 06:26:34,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:26:34,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586898399] [2021-11-04 06:26:34,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:26:34,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:26:35,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:26:35,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 06:26:35,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:26:35,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586898399] [2021-11-04 06:26:35,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586898399] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:26:35,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:26:35,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 06:26:35,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662525940] [2021-11-04 06:26:35,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:26:35,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-04 06:26:35,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:26:35,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-04 06:26:35,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 06:26:35,480 INFO L87 Difference]: Start difference. First operand has 2561 states, 2400 states have (on average 1.3958333333333333) internal successors, (3350), 2420 states have internal predecessors, (3350), 112 states have call successors, (112), 37 states have call predecessors, (112), 37 states have return successors, (112), 105 states have call predecessors, (112), 112 states have call successors, (112) Second operand has 2 states, 2 states have (on average 55.0) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:26:37,663 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:26:51,558 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:27:07,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:27:07,924 INFO L93 Difference]: Finished difference Result 5118 states and 7222 transitions. [2021-11-04 06:27:07,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-04 06:27:07,927 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 55.0) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-04 06:27:07,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:27:07,962 INFO L225 Difference]: With dead ends: 5118 [2021-11-04 06:27:07,963 INFO L226 Difference]: Without dead ends: 2546 [2021-11-04 06:27:07,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.04ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 06:27:07,990 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3256 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29662.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 3258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.61ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3256 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31846.97ms IncrementalHoareTripleChecker+Time [2021-11-04 06:27:07,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 235 Invalid, 3258 Unknown, 0 Unchecked, 38.61ms Time], IncrementalHoareTripleChecker [0 Valid, 3256 Invalid, 2 Unknown, 0 Unchecked, 31846.97ms Time] [2021-11-04 06:27:08,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2546 states. [2021-11-04 06:27:08,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2546 to 2546. [2021-11-04 06:27:08,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2546 states, 2386 states have (on average 1.359178541492037) internal successors, (3243), 2405 states have internal predecessors, (3243), 112 states have call successors, (112), 37 states have call predecessors, (112), 37 states have return successors, (112), 105 states have call predecessors, (112), 112 states have call successors, (112) [2021-11-04 06:27:08,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2546 states to 2546 states and 3467 transitions. [2021-11-04 06:27:08,150 INFO L78 Accepts]: Start accepts. Automaton has 2546 states and 3467 transitions. Word has length 110 [2021-11-04 06:27:08,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:27:08,150 INFO L470 AbstractCegarLoop]: Abstraction has 2546 states and 3467 transitions. [2021-11-04 06:27:08,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 55.0) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:27:08,150 INFO L276 IsEmpty]: Start isEmpty. Operand 2546 states and 3467 transitions. [2021-11-04 06:27:08,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-04 06:27:08,156 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:27:08,157 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 06:27:08,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 06:27:08,157 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-04 06:27:08,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:27:08,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1434476754, now seen corresponding path program 1 times [2021-11-04 06:27:08,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:27:08,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250674665] [2021-11-04 06:27:08,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:27:08,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:27:08,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:27:08,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 06:27:08,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:27:08,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250674665] [2021-11-04 06:27:08,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250674665] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:27:08,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:27:08,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 06:27:08,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544987196] [2021-11-04 06:27:08,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:27:08,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:27:08,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:27:08,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:27:08,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:27:08,764 INFO L87 Difference]: Start difference. First operand 2546 states and 3467 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:27:10,911 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:27:34,272 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:28:06,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:28:06,622 INFO L93 Difference]: Finished difference Result 5048 states and 6893 transitions. [2021-11-04 06:28:06,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:28:06,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-04 06:28:06,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:28:06,642 INFO L225 Difference]: With dead ends: 5048 [2021-11-04 06:28:06,642 INFO L226 Difference]: Without dead ends: 2550 [2021-11-04 06:28:06,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.33ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:28:06,655 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 0 mSDsluCounter, 3426 mSDsCounter, 0 mSdLazyCounter, 6478 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54628.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 6486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 81.53ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 6478 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57289.42ms IncrementalHoareTripleChecker+Time [2021-11-04 06:28:06,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 448 Invalid, 6486 Unknown, 0 Unchecked, 81.53ms Time], IncrementalHoareTripleChecker [6 Valid, 6478 Invalid, 2 Unknown, 0 Unchecked, 57289.42ms Time] [2021-11-04 06:28:06,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2550 states. [2021-11-04 06:28:06,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2550 to 2550. [2021-11-04 06:28:06,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2550 states, 2390 states have (on average 1.3585774058577407) internal successors, (3247), 2409 states have internal predecessors, (3247), 112 states have call successors, (112), 37 states have call predecessors, (112), 37 states have return successors, (112), 105 states have call predecessors, (112), 112 states have call successors, (112) [2021-11-04 06:28:06,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2550 states to 2550 states and 3471 transitions. [2021-11-04 06:28:06,736 INFO L78 Accepts]: Start accepts. Automaton has 2550 states and 3471 transitions. Word has length 110 [2021-11-04 06:28:06,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:28:06,739 INFO L470 AbstractCegarLoop]: Abstraction has 2550 states and 3471 transitions. [2021-11-04 06:28:06,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:28:06,740 INFO L276 IsEmpty]: Start isEmpty. Operand 2550 states and 3471 transitions. [2021-11-04 06:28:06,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-04 06:28:06,759 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:28:06,759 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] [2021-11-04 06:28:06,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 06:28:06,760 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-04 06:28:06,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:28:06,761 INFO L85 PathProgramCache]: Analyzing trace with hash -168136524, now seen corresponding path program 1 times [2021-11-04 06:28:06,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:28:06,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896072241] [2021-11-04 06:28:06,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:28:06,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:28:07,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:28:07,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 06:28:07,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:28:07,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896072241] [2021-11-04 06:28:07,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896072241] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:28:07,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:28:07,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 06:28:07,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018699273] [2021-11-04 06:28:07,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:28:07,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:28:07,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:28:07,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:28:07,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:28:07,399 INFO L87 Difference]: Start difference. First operand 2550 states and 3471 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 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) [2021-11-04 06:28:09,535 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:28:22,929 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:28:32,662 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:29:04,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:29:04,329 INFO L93 Difference]: Finished difference Result 5057 states and 6906 transitions. [2021-11-04 06:29:04,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:29:04,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 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 [2021-11-04 06:29:04,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:29:04,342 INFO L225 Difference]: With dead ends: 5057 [2021-11-04 06:29:04,343 INFO L226 Difference]: Without dead ends: 2559 [2021-11-04 06:29:04,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.96ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:29:04,352 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 0 mSDsluCounter, 3426 mSDsCounter, 0 mSdLazyCounter, 6473 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53822.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 6491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 53.38ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 6473 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56529.43ms IncrementalHoareTripleChecker+Time [2021-11-04 06:29:04,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 448 Invalid, 6491 Unknown, 0 Unchecked, 53.38ms Time], IncrementalHoareTripleChecker [16 Valid, 6473 Invalid, 2 Unknown, 0 Unchecked, 56529.43ms Time] [2021-11-04 06:29:04,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2559 states. [2021-11-04 06:29:04,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2559 to 2559. [2021-11-04 06:29:04,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2559 states, 2399 states have (on average 1.3572321800750313) internal successors, (3256), 2418 states have internal predecessors, (3256), 112 states have call successors, (112), 37 states have call predecessors, (112), 37 states have return successors, (112), 105 states have call predecessors, (112), 112 states have call successors, (112) [2021-11-04 06:29:04,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2559 states to 2559 states and 3480 transitions. [2021-11-04 06:29:04,412 INFO L78 Accepts]: Start accepts. Automaton has 2559 states and 3480 transitions. Word has length 113 [2021-11-04 06:29:04,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:29:04,413 INFO L470 AbstractCegarLoop]: Abstraction has 2559 states and 3480 transitions. [2021-11-04 06:29:04,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 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) [2021-11-04 06:29:04,413 INFO L276 IsEmpty]: Start isEmpty. Operand 2559 states and 3480 transitions. [2021-11-04 06:29:04,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-04 06:29:04,419 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:29:04,419 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 06:29:04,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 06:29:04,419 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-04 06:29:04,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:29:04,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1807943902, now seen corresponding path program 1 times [2021-11-04 06:29:04,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:29:04,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515030487] [2021-11-04 06:29:04,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:29:04,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:29:04,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:29:04,980 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-04 06:29:04,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:29:04,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515030487] [2021-11-04 06:29:04,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515030487] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:29:04,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:29:04,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 06:29:04,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931224015] [2021-11-04 06:29:04,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:29:04,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:29:04,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:29:04,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:29:04,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:29:04,983 INFO L87 Difference]: Start difference. First operand 2559 states and 3480 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:29:07,122 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:29:21,037 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:30:04,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:30:04,832 INFO L93 Difference]: Finished difference Result 7280 states and 9975 transitions. [2021-11-04 06:30:04,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:30:04,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-04 06:30:04,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:30:04,874 INFO L225 Difference]: With dead ends: 7280 [2021-11-04 06:30:04,874 INFO L226 Difference]: Without dead ends: 4817 [2021-11-04 06:30:04,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.12ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:30:04,889 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 3124 mSDsluCounter, 3436 mSDsCounter, 0 mSdLazyCounter, 6461 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55780.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3124 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 6466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 80.28ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6461 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59189.66ms IncrementalHoareTripleChecker+Time [2021-11-04 06:30:04,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3124 Valid, 560 Invalid, 6466 Unknown, 0 Unchecked, 80.28ms Time], IncrementalHoareTripleChecker [3 Valid, 6461 Invalid, 2 Unknown, 0 Unchecked, 59189.66ms Time] [2021-11-04 06:30:04,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4817 states. [2021-11-04 06:30:05,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4817 to 4797. [2021-11-04 06:30:05,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4797 states, 4488 states have (on average 1.3685383244206775) internal successors, (6142), 4516 states have internal predecessors, (6142), 224 states have call successors, (224), 74 states have call predecessors, (224), 74 states have return successors, (224), 210 states have call predecessors, (224), 224 states have call successors, (224) [2021-11-04 06:30:05,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4797 states to 4797 states and 6590 transitions. [2021-11-04 06:30:05,043 INFO L78 Accepts]: Start accepts. Automaton has 4797 states and 6590 transitions. Word has length 122 [2021-11-04 06:30:05,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:30:05,044 INFO L470 AbstractCegarLoop]: Abstraction has 4797 states and 6590 transitions. [2021-11-04 06:30:05,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:30:05,045 INFO L276 IsEmpty]: Start isEmpty. Operand 4797 states and 6590 transitions. [2021-11-04 06:30:05,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-04 06:30:05,051 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:30:05,052 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 06:30:05,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 06:30:05,052 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-04 06:30:05,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:30:05,054 INFO L85 PathProgramCache]: Analyzing trace with hash -2582156, now seen corresponding path program 1 times [2021-11-04 06:30:05,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:30:05,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595034045] [2021-11-04 06:30:05,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:30:05,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:30:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:30:05,695 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-04 06:30:05,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:30:05,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595034045] [2021-11-04 06:30:05,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595034045] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:30:05,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:30:05,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 06:30:05,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033161358] [2021-11-04 06:30:05,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:30:05,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:30:05,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:30:05,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:30:05,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:30:05,697 INFO L87 Difference]: Start difference. First operand 4797 states and 6590 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:30:07,835 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:30:16,229 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:30:22,186 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:31:06,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:31:06,100 INFO L93 Difference]: Finished difference Result 14045 states and 19477 transitions. [2021-11-04 06:31:06,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:31:06,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-04 06:31:06,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:31:06,157 INFO L225 Difference]: With dead ends: 14045 [2021-11-04 06:31:06,158 INFO L226 Difference]: Without dead ends: 9321 [2021-11-04 06:31:06,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.77ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:31:06,184 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 3155 mSDsluCounter, 3345 mSDsCounter, 0 mSdLazyCounter, 6417 mSolverCounterSat, 10 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56032.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3155 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 6429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 54.18ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 6417 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59665.64ms IncrementalHoareTripleChecker+Time [2021-11-04 06:31:06,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3155 Valid, 570 Invalid, 6429 Unknown, 0 Unchecked, 54.18ms Time], IncrementalHoareTripleChecker [10 Valid, 6417 Invalid, 2 Unknown, 0 Unchecked, 59665.64ms Time] [2021-11-04 06:31:06,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9321 states. [2021-11-04 06:31:06,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9321 to 9291. [2021-11-04 06:31:06,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9291 states, 8684 states have (on average 1.3721787194841086) internal successors, (11916), 8730 states have internal predecessors, (11916), 448 states have call successors, (448), 148 states have call predecessors, (448), 148 states have return successors, (468), 420 states have call predecessors, (468), 448 states have call successors, (468) [2021-11-04 06:31:06,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9291 states to 9291 states and 12832 transitions. [2021-11-04 06:31:06,502 INFO L78 Accepts]: Start accepts. Automaton has 9291 states and 12832 transitions. Word has length 122 [2021-11-04 06:31:06,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:31:06,504 INFO L470 AbstractCegarLoop]: Abstraction has 9291 states and 12832 transitions. [2021-11-04 06:31:06,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:31:06,505 INFO L276 IsEmpty]: Start isEmpty. Operand 9291 states and 12832 transitions. [2021-11-04 06:31:06,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-04 06:31:06,513 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:31:06,513 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] [2021-11-04 06:31:06,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 06:31:06,514 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-04 06:31:06,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:31:06,515 INFO L85 PathProgramCache]: Analyzing trace with hash -625048, now seen corresponding path program 1 times [2021-11-04 06:31:06,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:31:06,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071519794] [2021-11-04 06:31:06,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:31:06,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:31:06,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:31:07,163 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-04 06:31:07,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:31:07,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071519794] [2021-11-04 06:31:07,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071519794] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:31:07,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:31:07,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 06:31:07,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869826792] [2021-11-04 06:31:07,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:31:07,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:31:07,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:31:07,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:31:07,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:31:07,165 INFO L87 Difference]: Start difference. First operand 9291 states and 12832 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:31:09,343 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:31:22,469 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:31:44,495 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:32:09,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:32:09,035 INFO L93 Difference]: Finished difference Result 18671 states and 25891 transitions. [2021-11-04 06:32:09,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:32:09,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 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 130 [2021-11-04 06:32:09,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:32:09,104 INFO L225 Difference]: With dead ends: 18671 [2021-11-04 06:32:09,104 INFO L226 Difference]: Without dead ends: 13947 [2021-11-04 06:32:09,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.61ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:32:09,130 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 3313 mSDsluCounter, 3345 mSDsCounter, 0 mSdLazyCounter, 6389 mSolverCounterSat, 10 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57171.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3313 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 6402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 52.73ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 6389 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61107.26ms IncrementalHoareTripleChecker+Time [2021-11-04 06:32:09,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3313 Valid, 570 Invalid, 6402 Unknown, 0 Unchecked, 52.73ms Time], IncrementalHoareTripleChecker [10 Valid, 6389 Invalid, 3 Unknown, 0 Unchecked, 61107.26ms Time] [2021-11-04 06:32:09,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13947 states. [2021-11-04 06:32:09,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13947 to 9423. [2021-11-04 06:32:09,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9423 states, 8816 states have (on average 1.371029945553539) internal successors, (12087), 8862 states have internal predecessors, (12087), 448 states have call successors, (448), 148 states have call predecessors, (448), 148 states have return successors, (468), 420 states have call predecessors, (468), 448 states have call successors, (468) [2021-11-04 06:32:09,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9423 states to 9423 states and 13003 transitions. [2021-11-04 06:32:09,422 INFO L78 Accepts]: Start accepts. Automaton has 9423 states and 13003 transitions. Word has length 130 [2021-11-04 06:32:09,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:32:09,423 INFO L470 AbstractCegarLoop]: Abstraction has 9423 states and 13003 transitions. [2021-11-04 06:32:09,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:32:09,426 INFO L276 IsEmpty]: Start isEmpty. Operand 9423 states and 13003 transitions. [2021-11-04 06:32:09,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-04 06:32:09,435 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:32:09,435 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] [2021-11-04 06:32:09,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-04 06:32:09,435 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting usb_serial_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-04 06:32:09,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:32:09,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1684700638, now seen corresponding path program 1 times [2021-11-04 06:32:09,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:32:09,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800968389] [2021-11-04 06:32:09,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:32:09,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:32:09,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:32:09,951 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-04 06:32:09,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:32:09,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800968389] [2021-11-04 06:32:09,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800968389] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:32:09,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:32:09,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 06:32:09,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212869871] [2021-11-04 06:32:09,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:32:09,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:32:09,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:32:09,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:32:09,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:32:09,953 INFO L87 Difference]: Start difference. First operand 9423 states and 13003 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:32:12,085 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:32:25,476 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:33:10,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:33:10,827 INFO L93 Difference]: Finished difference Result 27624 states and 38384 transitions. [2021-11-04 06:33:10,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:33:10,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 134 [2021-11-04 06:33:10,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:33:10,917 INFO L225 Difference]: With dead ends: 27624 [2021-11-04 06:33:10,917 INFO L226 Difference]: Without dead ends: 18297 [2021-11-04 06:33:10,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.94ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:33:10,963 INFO L933 BasicCegarLoop]: 377 mSDtfsCounter, 3170 mSDsluCounter, 3429 mSDsCounter, 0 mSdLazyCounter, 6504 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55893.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3170 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 6513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 50.00ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 6504 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60034.76ms IncrementalHoareTripleChecker+Time [2021-11-04 06:33:10,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3170 Valid, 601 Invalid, 6513 Unknown, 0 Unchecked, 50.00ms Time], IncrementalHoareTripleChecker [7 Valid, 6504 Invalid, 2 Unknown, 0 Unchecked, 60034.76ms Time] [2021-11-04 06:33:10,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18297 states. [2021-11-04 06:33:11,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18297 to 18181. [2021-11-04 06:33:11,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18181 states, 17014 states have (on average 1.3743975549547431) internal successors, (23384), 17092 states have internal predecessors, (23384), 868 states have call successors, (868), 288 states have call predecessors, (868), 288 states have return successors, (1118), 816 states have call predecessors, (1118), 868 states have call successors, (1118) [2021-11-04 06:33:11,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18181 states to 18181 states and 25370 transitions. [2021-11-04 06:33:11,452 INFO L78 Accepts]: Start accepts. Automaton has 18181 states and 25370 transitions. Word has length 134 [2021-11-04 06:33:11,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:33:11,452 INFO L470 AbstractCegarLoop]: Abstraction has 18181 states and 25370 transitions. [2021-11-04 06:33:11,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:33:11,453 INFO L276 IsEmpty]: Start isEmpty. Operand 18181 states and 25370 transitions. [2021-11-04 06:33:11,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-04 06:33:11,461 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:33:11,462 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] [2021-11-04 06:33:11,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-04 06:33:11,462 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-04 06:33:11,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:33:11,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1690227590, now seen corresponding path program 1 times [2021-11-04 06:33:11,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:33:11,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840398265] [2021-11-04 06:33:11,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:33:11,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:33:11,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:33:11,973 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-04 06:33:11,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:33:11,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840398265] [2021-11-04 06:33:11,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840398265] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:33:11,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:33:11,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 06:33:11,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442232475] [2021-11-04 06:33:11,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:33:11,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:33:11,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:33:11,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:33:11,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:33:11,975 INFO L87 Difference]: Start difference. First operand 18181 states and 25370 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:33:14,114 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:33:19,908 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:33:24,382 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:33:43,099 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:34:14,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:34:14,739 INFO L93 Difference]: Finished difference Result 50607 states and 70396 transitions. [2021-11-04 06:34:14,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:34:14,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 134 [2021-11-04 06:34:14,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:34:14,924 INFO L225 Difference]: With dead ends: 50607 [2021-11-04 06:34:14,925 INFO L226 Difference]: Without dead ends: 32522 [2021-11-04 06:34:15,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.83ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:34:15,008 INFO L933 BasicCegarLoop]: 311 mSDtfsCounter, 2556 mSDsluCounter, 3367 mSDsCounter, 0 mSdLazyCounter, 6592 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57322.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2556 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 6595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 45.18ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6592 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61599.60ms IncrementalHoareTripleChecker+Time [2021-11-04 06:34:15,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2556 Valid, 535 Invalid, 6595 Unknown, 0 Unchecked, 45.18ms Time], IncrementalHoareTripleChecker [1 Valid, 6592 Invalid, 2 Unknown, 0 Unchecked, 61599.60ms Time] [2021-11-04 06:34:15,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32522 states. [2021-11-04 06:34:15,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32522 to 32377. [2021-11-04 06:34:15,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32377 states, 30334 states have (on average 1.3710028351025252) internal successors, (41588), 30480 states have internal predecessors, (41588), 1480 states have call successors, (1480), 552 states have call predecessors, (1480), 552 states have return successors, (1920), 1376 states have call predecessors, (1920), 1480 states have call successors, (1920) [2021-11-04 06:34:15,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32377 states to 32377 states and 44988 transitions. [2021-11-04 06:34:15,898 INFO L78 Accepts]: Start accepts. Automaton has 32377 states and 44988 transitions. Word has length 134 [2021-11-04 06:34:15,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:34:15,899 INFO L470 AbstractCegarLoop]: Abstraction has 32377 states and 44988 transitions. [2021-11-04 06:34:15,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:34:15,899 INFO L276 IsEmpty]: Start isEmpty. Operand 32377 states and 44988 transitions. [2021-11-04 06:34:15,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-04 06:34:15,906 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:34:15,906 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] [2021-11-04 06:34:15,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-04 06:34:15,907 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting usb_serial_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-04 06:34:15,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:34:15,907 INFO L85 PathProgramCache]: Analyzing trace with hash 2144092690, now seen corresponding path program 1 times [2021-11-04 06:34:15,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:34:15,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156454766] [2021-11-04 06:34:15,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:34:15,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:34:16,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:34:16,438 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-04 06:34:16,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:34:16,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156454766] [2021-11-04 06:34:16,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156454766] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:34:16,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:34:16,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 06:34:16,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201173608] [2021-11-04 06:34:16,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:34:16,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:34:16,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:34:16,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:34:16,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:34:16,440 INFO L87 Difference]: Start difference. First operand 32377 states and 44988 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:34:18,591 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:34:25,132 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:34:53,634 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:35:38,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:35:38,427 INFO L93 Difference]: Finished difference Result 94537 states and 132638 transitions. [2021-11-04 06:35:38,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:35:38,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-11-04 06:35:38,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:35:38,900 INFO L225 Difference]: With dead ends: 94537 [2021-11-04 06:35:38,901 INFO L226 Difference]: Without dead ends: 62256 [2021-11-04 06:35:39,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.86ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:35:39,108 INFO L933 BasicCegarLoop]: 432 mSDtfsCounter, 3179 mSDsluCounter, 3464 mSDsCounter, 0 mSdLazyCounter, 8545 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 74964.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3179 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 8550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 55.66ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8545 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 80310.62ms IncrementalHoareTripleChecker+Time [2021-11-04 06:35:39,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3179 Valid, 691 Invalid, 8550 Unknown, 0 Unchecked, 55.66ms Time], IncrementalHoareTripleChecker [3 Valid, 8545 Invalid, 2 Unknown, 0 Unchecked, 80310.62ms Time] [2021-11-04 06:35:39,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62256 states. [2021-11-04 06:35:40,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62256 to 62121. [2021-11-04 06:35:40,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62121 states, 58278 states have (on average 1.3710834277085693) internal successors, (79904), 58496 states have internal predecessors, (79904), 2752 states have call successors, (2752), 1064 states have call predecessors, (2752), 1080 states have return successors, (4960), 2616 states have call predecessors, (4960), 2752 states have call successors, (4960) [2021-11-04 06:35:41,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62121 states to 62121 states and 87616 transitions. [2021-11-04 06:35:41,669 INFO L78 Accepts]: Start accepts. Automaton has 62121 states and 87616 transitions. Word has length 138 [2021-11-04 06:35:41,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:35:41,670 INFO L470 AbstractCegarLoop]: Abstraction has 62121 states and 87616 transitions. [2021-11-04 06:35:41,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:35:41,670 INFO L276 IsEmpty]: Start isEmpty. Operand 62121 states and 87616 transitions. [2021-11-04 06:35:41,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-04 06:35:41,710 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:35:41,710 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 06:35:41,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-04 06:35:41,711 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting usb_serial_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-04 06:35:41,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:35:41,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1520470149, now seen corresponding path program 1 times [2021-11-04 06:35:41,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:35:41,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655936225] [2021-11-04 06:35:41,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:35:41,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:35:42,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:35:42,536 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-04 06:35:42,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:35:42,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655936225] [2021-11-04 06:35:42,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655936225] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:35:42,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:35:42,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 06:35:42,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098346194] [2021-11-04 06:35:42,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:35:42,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:35:42,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:35:42,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:35:42,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:35:42,538 INFO L87 Difference]: Start difference. First operand 62121 states and 87616 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:35:44,773 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:35:53,704 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:36:04,274 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:36:06,312 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:36:59,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:36:59,698 INFO L93 Difference]: Finished difference Result 99811 states and 140470 transitions. [2021-11-04 06:36:59,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:36:59,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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 167 [2021-11-04 06:36:59,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:37:00,051 INFO L225 Difference]: With dead ends: 99811 [2021-11-04 06:37:00,052 INFO L226 Difference]: Without dead ends: 37786 [2021-11-04 06:37:00,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.76ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:37:00,283 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 3201 mSDsluCounter, 2683 mSDsCounter, 0 mSdLazyCounter, 7967 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 70243.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3201 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 7969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 47.43ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7967 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 75427.15ms IncrementalHoareTripleChecker+Time [2021-11-04 06:37:00,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3201 Valid, 513 Invalid, 7969 Unknown, 0 Unchecked, 47.43ms Time], IncrementalHoareTripleChecker [0 Valid, 7967 Invalid, 2 Unknown, 0 Unchecked, 75427.15ms Time] [2021-11-04 06:37:00,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37786 states. [2021-11-04 06:37:01,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37786 to 37495. [2021-11-04 06:37:01,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37495 states, 35198 states have (on average 1.3676345246889028) internal successors, (48138), 35336 states have internal predecessors, (48138), 1624 states have call successors, (1624), 646 states have call predecessors, (1624), 662 states have return successors, (2844), 1546 states have call predecessors, (2844), 1624 states have call successors, (2844) [2021-11-04 06:37:01,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37495 states to 37495 states and 52606 transitions. [2021-11-04 06:37:01,466 INFO L78 Accepts]: Start accepts. Automaton has 37495 states and 52606 transitions. Word has length 167 [2021-11-04 06:37:01,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:37:01,467 INFO L470 AbstractCegarLoop]: Abstraction has 37495 states and 52606 transitions. [2021-11-04 06:37:01,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:37:01,467 INFO L276 IsEmpty]: Start isEmpty. Operand 37495 states and 52606 transitions. [2021-11-04 06:37:01,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-04 06:37:01,480 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:37:01,481 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 06:37:01,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-04 06:37:01,482 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting usb_serial_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-04 06:37:01,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:37:01,482 INFO L85 PathProgramCache]: Analyzing trace with hash 715413084, now seen corresponding path program 1 times [2021-11-04 06:37:01,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:37:01,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533310235] [2021-11-04 06:37:01,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:37:01,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:37:01,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:37:02,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-04 06:37:02,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:37:02,423 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-04 06:37:02,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:37:02,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533310235] [2021-11-04 06:37:02,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533310235] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:37:02,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:37:02,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 06:37:02,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544271428] [2021-11-04 06:37:02,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:37:02,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 06:37:02,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:37:02,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 06:37:02,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 06:37:02,426 INFO L87 Difference]: Start difference. First operand 37495 states and 52606 transitions. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 3 states have internal predecessors, (174), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-04 06:37:04,585 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:37:13,562 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:37:39,451 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:39:25,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:39:25,936 INFO L93 Difference]: Finished difference Result 104458 states and 147591 transitions. [2021-11-04 06:39:25,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 06:39:25,937 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 3 states have internal predecessors, (174), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 179 [2021-11-04 06:39:25,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:39:26,275 INFO L225 Difference]: With dead ends: 104458 [2021-11-04 06:39:26,276 INFO L226 Difference]: Without dead ends: 67059 [2021-11-04 06:39:26,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 346.61ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 06:39:26,442 INFO L933 BasicCegarLoop]: 416 mSDtfsCounter, 3701 mSDsluCounter, 6260 mSDsCounter, 0 mSdLazyCounter, 14440 mSolverCounterSat, 263 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 132364.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3736 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 14706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 206.82ms SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 14440 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 140809.03ms IncrementalHoareTripleChecker+Time [2021-11-04 06:39:26,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3736 Valid, 721 Invalid, 14706 Unknown, 0 Unchecked, 206.82ms Time], IncrementalHoareTripleChecker [263 Valid, 14440 Invalid, 3 Unknown, 0 Unchecked, 140809.03ms Time] [2021-11-04 06:39:26,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67059 states. [2021-11-04 06:39:28,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67059 to 65011. [2021-11-04 06:39:28,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65011 states, 60829 states have (on average 1.3665685774877114) internal successors, (83127), 61063 states have internal predecessors, (83127), 2790 states have call successors, (2790), 1069 states have call predecessors, (2790), 1381 states have return successors, (6198), 2950 states have call predecessors, (6198), 2790 states have call successors, (6198) [2021-11-04 06:39:28,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65011 states to 65011 states and 92115 transitions. [2021-11-04 06:39:28,904 INFO L78 Accepts]: Start accepts. Automaton has 65011 states and 92115 transitions. Word has length 179 [2021-11-04 06:39:28,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:39:28,905 INFO L470 AbstractCegarLoop]: Abstraction has 65011 states and 92115 transitions. [2021-11-04 06:39:28,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 3 states have internal predecessors, (174), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-04 06:39:28,906 INFO L276 IsEmpty]: Start isEmpty. Operand 65011 states and 92115 transitions. [2021-11-04 06:39:28,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-04 06:39:28,948 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:39:28,948 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 06:39:28,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-04 06:39:28,949 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-04 06:39:28,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:39:28,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1518436734, now seen corresponding path program 1 times [2021-11-04 06:39:28,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:39:28,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987291439] [2021-11-04 06:39:28,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:39:28,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:39:29,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:39:29,661 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-04 06:39:29,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:39:29,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987291439] [2021-11-04 06:39:29,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987291439] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:39:29,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:39:29,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 06:39:29,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923149265] [2021-11-04 06:39:29,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:39:29,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 06:39:29,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:39:29,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 06:39:29,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 06:39:29,663 INFO L87 Difference]: Start difference. First operand 65011 states and 92115 transitions. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:39:31,828 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15