./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 173e3943 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-dev-173e394 [2021-11-06 16:17:58,317 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 16:17:58,319 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 16:17:58,380 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 16:17:58,381 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 16:17:58,384 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 16:17:58,384 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 16:17:58,387 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 16:17:58,388 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 16:17:58,391 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 16:17:58,392 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 16:17:58,393 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 16:17:58,393 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 16:17:58,395 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 16:17:58,396 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 16:17:58,399 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 16:17:58,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 16:17:58,400 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 16:17:58,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 16:17:58,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 16:17:58,407 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 16:17:58,408 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 16:17:58,409 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 16:17:58,410 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 16:17:58,414 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 16:17:58,415 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 16:17:58,415 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 16:17:58,416 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 16:17:58,416 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 16:17:58,417 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 16:17:58,417 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 16:17:58,418 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 16:17:58,419 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 16:17:58,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 16:17:58,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 16:17:58,421 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 16:17:58,422 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 16:17:58,422 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 16:17:58,422 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 16:17:58,423 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 16:17:58,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 16:17:58,424 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 16:17:58,447 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 16:17:58,448 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 16:17:58,448 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 16:17:58,448 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 16:17:58,449 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 16:17:58,449 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 16:17:58,449 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 16:17:58,450 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 16:17:58,450 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 16:17:58,450 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 16:17:58,450 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 16:17:58,451 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 16:17:58,451 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 16:17:58,451 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 16:17:58,451 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 16:17:58,451 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 16:17:58,451 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 16:17:58,452 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 16:17:58,452 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 16:17:58,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 16:17:58,452 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 16:17:58,452 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 16:17:58,452 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 16:17:58,452 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 16:17:58,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 16:17:58,453 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 16:17:58,453 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 16:17:58,454 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 16:17:58,454 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 16:17:58,454 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 267df3d840ee451a69f2c9c23fc4c286b307e31eb8c416518f7dce9b4c82858a [2021-11-06 16:17:58,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 16:17:58,674 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 16:17:58,676 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 16:17:58,677 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 16:17:58,678 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 16:17:58,679 INFO L432 ainManager$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 [2021-11-06 16:17:58,732 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68572af89/0c73d1794b634225a358733220a229c9/FLAGb4f066792 [2021-11-06 16:17:59,358 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 16:17:59,358 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 [2021-11-06 16:17:59,405 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68572af89/0c73d1794b634225a358733220a229c9/FLAGb4f066792 [2021-11-06 16:17:59,763 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68572af89/0c73d1794b634225a358733220a229c9 [2021-11-06 16:17:59,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 16:17:59,766 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 16:17:59,769 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 16:17:59,769 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 16:17:59,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 16:17:59,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 04:17:59" (1/1) ... [2021-11-06 16:17:59,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48bcca60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:17:59, skipping insertion in model container [2021-11-06 16:17:59,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 04:17:59" (1/1) ... [2021-11-06 16:17:59,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 16:17:59,869 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 16:18:01,529 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] [2021-11-06 16:18:01,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 16:18:01,636 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 16:18:01,985 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] [2021-11-06 16:18:01,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 16:18:02,132 INFO L208 MainTranslator]: Completed translation [2021-11-06 16:18:02,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:18:02 WrapperNode [2021-11-06 16:18:02,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 16:18:02,135 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 16:18:02,135 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 16:18:02,135 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 16:18:02,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:18:02" (1/1) ... [2021-11-06 16:18:02,255 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:18:02" (1/1) ... [2021-11-06 16:18:02,525 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 16:18:02,526 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 16:18:02,526 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 16:18:02,527 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 16:18:02,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:18:02" (1/1) ... [2021-11-06 16:18:02,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:18:02" (1/1) ... [2021-11-06 16:18:02,612 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:18:02" (1/1) ... [2021-11-06 16:18:02,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:18:02" (1/1) ... [2021-11-06 16:18:02,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:18:02" (1/1) ... [2021-11-06 16:18:02,921 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:18:02" (1/1) ... [2021-11-06 16:18:02,967 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:18:02" (1/1) ... [2021-11-06 16:18:03,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 16:18:03,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 16:18:03,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 16:18:03,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 16:18:03,107 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:18:02" (1/1) ... [2021-11-06 16:18:03,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 16:18:03,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 16:18:03,152 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) [2021-11-06 16:18:03,211 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 [2021-11-06 16:18:03,240 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_dtr_rts [2021-11-06 16:18:03,240 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_dtr_rts [2021-11-06 16:18:03,241 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_remove [2021-11-06 16:18:03,241 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_remove [2021-11-06 16:18:03,241 INFO L130 BoogieDeclarations]: Found specification of procedure serial_chars_in_buffer [2021-11-06 16:18:03,241 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_chars_in_buffer [2021-11-06 16:18:03,241 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_activate [2021-11-06 16:18:03,242 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_activate [2021-11-06 16:18:03,242 INFO L130 BoogieDeclarations]: Found specification of procedure serial_ioctl [2021-11-06 16:18:03,242 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_ioctl [2021-11-06 16:18:03,242 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write_room [2021-11-06 16:18:03,242 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write_room [2021-11-06 16:18:03,242 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-06 16:18:03,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-06 16:18:03,242 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_probe [2021-11-06 16:18:03,243 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_probe [2021-11-06 16:18:03,243 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-06 16:18:03,243 INFO L130 BoogieDeclarations]: Found specification of procedure serial_get_icount [2021-11-06 16:18:03,243 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_get_icount [2021-11-06 16:18:03,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 16:18:03,243 INFO L130 BoogieDeclarations]: Found specification of procedure serial_cleanup [2021-11-06 16:18:03,243 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_cleanup [2021-11-06 16:18:03,243 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_carrier_raised [2021-11-06 16:18:03,243 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_carrier_raised [2021-11-06 16:18:03,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 16:18:03,244 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2021-11-06 16:18:03,244 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2021-11-06 16:18:03,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 16:18:03,244 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_reset_resume [2021-11-06 16:18:03,244 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_reset_resume [2021-11-06 16:18:03,244 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_read_bulk_callback [2021-11-06 16:18:03,244 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_read_bulk_callback [2021-11-06 16:18:03,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 16:18:03,245 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_shutdown [2021-11-06 16:18:03,245 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_shutdown [2021-11-06 16:18:03,245 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2021-11-06 16:18:03,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2021-11-06 16:18:03,245 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-06 16:18:03,245 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-06 16:18:03,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 16:18:03,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 16:18:03,246 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 16:18:03,246 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 16:18:03,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 16:18:03,246 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-06 16:18:03,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-06 16:18:03,246 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_put [2021-11-06 16:18:03,246 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_put [2021-11-06 16:18:03,247 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_serial [2021-11-06 16:18:03,247 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_serial [2021-11-06 16:18:03,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 16:18:03,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 16:18:03,247 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_start [2021-11-06 16:18:03,247 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_start [2021-11-06 16:18:03,247 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-11-06 16:18:03,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-11-06 16:18:03,262 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-11-06 16:18:03,263 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-11-06 16:18:03,263 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 16:18:03,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 16:18:03,264 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write [2021-11-06 16:18:03,264 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write [2021-11-06 16:18:03,264 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2021-11-06 16:18:03,264 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2021-11-06 16:18:03,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 16:18:03,265 INFO L130 BoogieDeclarations]: Found specification of procedure serial_unthrottle [2021-11-06 16:18:03,265 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_unthrottle [2021-11-06 16:18:03,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 16:18:03,265 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-06 16:18:03,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-06 16:18:03,265 INFO L130 BoogieDeclarations]: Found specification of procedure serial_throttle [2021-11-06 16:18:03,265 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_throttle [2021-11-06 16:18:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 16:18:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-06 16:18:03,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-06 16:18:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmget [2021-11-06 16:18:03,266 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmget [2021-11-06 16:18:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure serial_wait_until_sent [2021-11-06 16:18:03,266 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_wait_until_sent [2021-11-06 16:18:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 16:18:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2021-11-06 16:18:03,267 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2021-11-06 16:18:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2021-11-06 16:18:03,267 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2021-11-06 16:18:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmset [2021-11-06 16:18:03,267 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmset [2021-11-06 16:18:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write [2021-11-06 16:18:03,267 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write [2021-11-06 16:18:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-06 16:18:03,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-06 16:18:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 16:18:36,804 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 16:18:36,805 INFO L299 CfgBuilder]: Removed 2091 assume(true) statements. [2021-11-06 16:18:36,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 04:18:36 BoogieIcfgContainer [2021-11-06 16:18:36,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 16:18:36,812 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 16:18:36,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 16:18:36,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 16:18:36,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 04:17:59" (1/3) ... [2021-11-06 16:18:36,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5271c74d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 04:18:36, skipping insertion in model container [2021-11-06 16:18:36,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:18:02" (2/3) ... [2021-11-06 16:18:36,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5271c74d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 04:18:36, skipping insertion in model container [2021-11-06 16:18:36,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 04:18:36" (3/3) ... [2021-11-06 16:18:36,817 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-11-06 16:18:36,823 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 16:18:36,823 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-06 16:18:36,872 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 16:18:36,881 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 [2021-11-06 16:18:36,881 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-06 16:18:36,940 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) [2021-11-06 16:18:36,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-06 16:18:36,994 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:18:36,995 INFO L513 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] [2021-11-06 16:18:36,996 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)] === [2021-11-06 16:18:37,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:18:37,001 INFO L85 PathProgramCache]: Analyzing trace with hash -446975168, now seen corresponding path program 1 times [2021-11-06 16:18:37,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:18:37,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43225695] [2021-11-06 16:18:37,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:18:37,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:18:37,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:18:37,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:18:37,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:18:37,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43225695] [2021-11-06 16:18:37,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43225695] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:18:37,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:18:37,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 16:18:37,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926243867] [2021-11-06 16:18:37,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 16:18:37,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:18:37,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 16:18:37,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 16:18:37,867 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) [2021-11-06 16:18:38,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:18:38,001 INFO L93 Difference]: Finished difference Result 5118 states and 7222 transitions. [2021-11-06 16:18:38,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 16:18:38,002 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 [2021-11-06 16:18:38,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:18:38,027 INFO L225 Difference]: With dead ends: 5118 [2021-11-06 16:18:38,027 INFO L226 Difference]: Without dead ends: 2546 [2021-11-06 16:18:38,043 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 16:18:38,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2546 states. [2021-11-06 16:18:38,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2546 to 2546. [2021-11-06 16:18:38,168 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) [2021-11-06 16:18:38,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2546 states to 2546 states and 3467 transitions. [2021-11-06 16:18:38,184 INFO L78 Accepts]: Start accepts. Automaton has 2546 states and 3467 transitions. Word has length 110 [2021-11-06 16:18:38,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:18:38,185 INFO L470 AbstractCegarLoop]: Abstraction has 2546 states and 3467 transitions. [2021-11-06 16:18:38,185 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) [2021-11-06 16:18:38,185 INFO L276 IsEmpty]: Start isEmpty. Operand 2546 states and 3467 transitions. [2021-11-06 16:18:38,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-06 16:18:38,191 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:18:38,192 INFO L513 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] [2021-11-06 16:18:38,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 16:18:38,192 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)] === [2021-11-06 16:18:38,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:18:38,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1434476754, now seen corresponding path program 1 times [2021-11-06 16:18:38,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:18:38,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397295745] [2021-11-06 16:18:38,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:18:38,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:18:38,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:18:38,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:18:38,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:18:38,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397295745] [2021-11-06 16:18:38,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397295745] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:18:38,636 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:18:38,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:18:38,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821521861] [2021-11-06 16:18:38,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:18:38,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:18:38,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:18:38,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:18:38,638 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) [2021-11-06 16:18:40,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:18:40,995 INFO L93 Difference]: Finished difference Result 7260 states and 9953 transitions. [2021-11-06 16:18:40,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:18:40,996 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 [2021-11-06 16:18:40,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:18:41,023 INFO L225 Difference]: With dead ends: 7260 [2021-11-06 16:18:41,024 INFO L226 Difference]: Without dead ends: 4798 [2021-11-06 16:18:41,036 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:18:41,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4798 states. [2021-11-06 16:18:41,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4798 to 4778. [2021-11-06 16:18:41,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4778 states, 4469 states have (on average 1.3696576415305437) internal successors, (6121), 4497 states have internal predecessors, (6121), 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) [2021-11-06 16:18:41,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4778 states to 4778 states and 6569 transitions. [2021-11-06 16:18:41,173 INFO L78 Accepts]: Start accepts. Automaton has 4778 states and 6569 transitions. Word has length 110 [2021-11-06 16:18:41,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:18:41,174 INFO L470 AbstractCegarLoop]: Abstraction has 4778 states and 6569 transitions. [2021-11-06 16:18:41,175 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) [2021-11-06 16:18:41,175 INFO L276 IsEmpty]: Start isEmpty. Operand 4778 states and 6569 transitions. [2021-11-06 16:18:41,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-06 16:18:41,181 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:18:41,181 INFO L513 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] [2021-11-06 16:18:41,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 16:18:41,182 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)] === [2021-11-06 16:18:41,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:18:41,182 INFO L85 PathProgramCache]: Analyzing trace with hash -376049304, now seen corresponding path program 1 times [2021-11-06 16:18:41,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:18:41,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410023589] [2021-11-06 16:18:41,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:18:41,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:18:41,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:18:41,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:18:41,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:18:41,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410023589] [2021-11-06 16:18:41,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410023589] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:18:41,657 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:18:41,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 16:18:41,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114542778] [2021-11-06 16:18:41,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:18:41,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:18:41,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:18:41,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:18:41,659 INFO L87 Difference]: Start difference. First operand 4778 states and 6569 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:18:41,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:18:41,981 INFO L93 Difference]: Finished difference Result 14144 states and 19610 transitions. [2021-11-06 16:18:41,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:18:41,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-06 16:18:41,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:18:42,031 INFO L225 Difference]: With dead ends: 14144 [2021-11-06 16:18:42,032 INFO L226 Difference]: Without dead ends: 9427 [2021-11-06 16:18:42,058 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:18:42,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9427 states. [2021-11-06 16:18:42,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9427 to 9397. [2021-11-06 16:18:42,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9397 states, 8790 states have (on average 1.3717861205915813) internal successors, (12058), 8836 states have internal predecessors, (12058), 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) [2021-11-06 16:18:42,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9397 states to 9397 states and 12974 transitions. [2021-11-06 16:18:42,285 INFO L78 Accepts]: Start accepts. Automaton has 9397 states and 12974 transitions. Word has length 110 [2021-11-06 16:18:42,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:18:42,289 INFO L470 AbstractCegarLoop]: Abstraction has 9397 states and 12974 transitions. [2021-11-06 16:18:42,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:18:42,289 INFO L276 IsEmpty]: Start isEmpty. Operand 9397 states and 12974 transitions. [2021-11-06 16:18:42,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-06 16:18:42,297 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:18:42,297 INFO L513 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] [2021-11-06 16:18:42,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 16:18:42,298 INFO L402 AbstractCegarLoop]: === Iteration 4 === 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)] === [2021-11-06 16:18:42,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:18:42,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1377137642, now seen corresponding path program 1 times [2021-11-06 16:18:42,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:18:42,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202968269] [2021-11-06 16:18:42,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:18:42,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:18:42,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:18:42,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:18:42,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:18:42,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202968269] [2021-11-06 16:18:42,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202968269] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:18:42,647 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:18:42,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:18:42,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821701798] [2021-11-06 16:18:42,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:18:42,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:18:42,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:18:42,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:18:42,651 INFO L87 Difference]: Start difference. First operand 9397 states and 12974 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2021-11-06 16:18:43,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:18:43,090 INFO L93 Difference]: Finished difference Result 27578 states and 38331 transitions. [2021-11-06 16:18:43,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:18:43,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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 122 [2021-11-06 16:18:43,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:18:43,177 INFO L225 Difference]: With dead ends: 27578 [2021-11-06 16:18:43,178 INFO L226 Difference]: Without dead ends: 18265 [2021-11-06 16:18:43,220 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:18:43,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18265 states. [2021-11-06 16:18:43,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18265 to 18147. [2021-11-06 16:18:43,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18147 states, 16980 states have (on average 1.3749116607773852) internal successors, (23346), 17058 states have internal predecessors, (23346), 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) [2021-11-06 16:18:43,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18147 states to 18147 states and 25332 transitions. [2021-11-06 16:18:43,661 INFO L78 Accepts]: Start accepts. Automaton has 18147 states and 25332 transitions. Word has length 122 [2021-11-06 16:18:43,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:18:43,661 INFO L470 AbstractCegarLoop]: Abstraction has 18147 states and 25332 transitions. [2021-11-06 16:18:43,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2021-11-06 16:18:43,662 INFO L276 IsEmpty]: Start isEmpty. Operand 18147 states and 25332 transitions. [2021-11-06 16:18:43,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-06 16:18:43,668 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:18:43,668 INFO L513 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] [2021-11-06 16:18:43,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 16:18:43,669 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 16:18:43,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:18:43,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1382664594, now seen corresponding path program 1 times [2021-11-06 16:18:43,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:18:43,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142078904] [2021-11-06 16:18:43,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:18:43,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:18:43,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:18:44,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:18:44,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:18:44,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142078904] [2021-11-06 16:18:44,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142078904] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:18:44,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:18:44,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:18:44,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462123128] [2021-11-06 16:18:44,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:18:44,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:18:44,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:18:44,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:18:44,107 INFO L87 Difference]: Start difference. First operand 18147 states and 25332 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) [2021-11-06 16:18:44,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:18:44,844 INFO L93 Difference]: Finished difference Result 50815 states and 70676 transitions. [2021-11-06 16:18:44,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:18:44,845 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 [2021-11-06 16:18:44,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:18:44,984 INFO L225 Difference]: With dead ends: 50815 [2021-11-06 16:18:44,985 INFO L226 Difference]: Without dead ends: 32752 [2021-11-06 16:18:45,051 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:18:45,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32752 states. [2021-11-06 16:18:45,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32752 to 32607. [2021-11-06 16:18:45,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32607 states, 30564 states have (on average 1.3706975526763512) internal successors, (41894), 30710 states have internal predecessors, (41894), 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) [2021-11-06 16:18:45,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32607 states to 32607 states and 45294 transitions. [2021-11-06 16:18:45,768 INFO L78 Accepts]: Start accepts. Automaton has 32607 states and 45294 transitions. Word has length 122 [2021-11-06 16:18:45,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:18:45,768 INFO L470 AbstractCegarLoop]: Abstraction has 32607 states and 45294 transitions. [2021-11-06 16:18:45,769 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) [2021-11-06 16:18:45,769 INFO L276 IsEmpty]: Start isEmpty. Operand 32607 states and 45294 transitions. [2021-11-06 16:18:45,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-06 16:18:45,773 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:18:45,773 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:18:45,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 16:18:45,774 INFO L402 AbstractCegarLoop]: === Iteration 6 === 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)] === [2021-11-06 16:18:45,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:18:45,774 INFO L85 PathProgramCache]: Analyzing trace with hash -337432058, now seen corresponding path program 1 times [2021-11-06 16:18:45,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:18:45,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017415013] [2021-11-06 16:18:45,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:18:45,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:18:46,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:18:46,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:18:46,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:18:46,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017415013] [2021-11-06 16:18:46,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017415013] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:18:46,294 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:18:46,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:18:46,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604565986] [2021-11-06 16:18:46,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:18:46,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:18:46,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:18:46,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:18:46,296 INFO L87 Difference]: Start difference. First operand 32607 states and 45294 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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) [2021-11-06 16:18:47,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:18:47,650 INFO L93 Difference]: Finished difference Result 95537 states and 133950 transitions. [2021-11-06 16:18:47,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:18:47,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 126 [2021-11-06 16:18:47,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:18:47,936 INFO L225 Difference]: With dead ends: 95537 [2021-11-06 16:18:47,936 INFO L226 Difference]: Without dead ends: 63014 [2021-11-06 16:18:48,044 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:18:48,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63014 states. [2021-11-06 16:18:49,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63014 to 62879. [2021-11-06 16:18:49,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62879 states, 59036 states have (on average 1.3703164171014297) internal successors, (80898), 59254 states have internal predecessors, (80898), 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) [2021-11-06 16:18:49,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62879 states to 62879 states and 88610 transitions. [2021-11-06 16:18:49,905 INFO L78 Accepts]: Start accepts. Automaton has 62879 states and 88610 transitions. Word has length 126 [2021-11-06 16:18:49,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:18:49,905 INFO L470 AbstractCegarLoop]: Abstraction has 62879 states and 88610 transitions. [2021-11-06 16:18:49,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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) [2021-11-06 16:18:49,906 INFO L276 IsEmpty]: Start isEmpty. Operand 62879 states and 88610 transitions. [2021-11-06 16:18:49,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-06 16:18:49,917 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:18:49,918 INFO L513 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] [2021-11-06 16:18:49,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 16:18:49,918 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)] === [2021-11-06 16:18:49,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:18:49,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1482483944, now seen corresponding path program 1 times [2021-11-06 16:18:49,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:18:49,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109370462] [2021-11-06 16:18:49,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:18:49,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:18:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:18:50,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-06 16:18:50,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:18:50,499 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:18:50,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:18:50,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109370462] [2021-11-06 16:18:50,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109370462] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:18:50,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:18:50,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 16:18:50,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860303712] [2021-11-06 16:18:50,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 16:18:50,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:18:50,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 16:18:50,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 16:18:50,502 INFO L87 Difference]: Start difference. First operand 62879 states and 88610 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 states have internal predecessors, (162), 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) [2021-11-06 16:19:10,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:19:10,444 INFO L93 Difference]: Finished difference Result 197277 states and 279238 transitions. [2021-11-06 16:19:10,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 16:19:10,445 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 states have internal predecessors, (162), 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 167 [2021-11-06 16:19:10,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:19:11,246 INFO L225 Difference]: With dead ends: 197277 [2021-11-06 16:19:11,246 INFO L226 Difference]: Without dead ends: 134482 [2021-11-06 16:19:11,546 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:19:11,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134482 states. [2021-11-06 16:19:14,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134482 to 130827. [2021-11-06 16:19:14,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130827 states, 122496 states have (on average 1.3660364420062696) internal successors, (167334), 122954 states have internal predecessors, (167334), 5568 states have call successors, (5568), 2128 states have call predecessors, (5568), 2752 states have return successors, (12384), 5888 states have call predecessors, (12384), 5568 states have call successors, (12384) [2021-11-06 16:19:15,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130827 states to 130827 states and 185286 transitions. [2021-11-06 16:19:15,585 INFO L78 Accepts]: Start accepts. Automaton has 130827 states and 185286 transitions. Word has length 167 [2021-11-06 16:19:15,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:19:15,586 INFO L470 AbstractCegarLoop]: Abstraction has 130827 states and 185286 transitions. [2021-11-06 16:19:15,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 states have internal predecessors, (162), 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) [2021-11-06 16:19:15,586 INFO L276 IsEmpty]: Start isEmpty. Operand 130827 states and 185286 transitions. [2021-11-06 16:19:15,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-06 16:19:15,593 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:19:15,593 INFO L513 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] [2021-11-06 16:19:15,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 16:19:15,594 INFO L402 AbstractCegarLoop]: === Iteration 8 === 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)] === [2021-11-06 16:19:15,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:19:15,594 INFO L85 PathProgramCache]: Analyzing trace with hash -732853996, now seen corresponding path program 1 times [2021-11-06 16:19:15,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:19:15,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059484978] [2021-11-06 16:19:15,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:19:15,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:19:15,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:19:16,109 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:19:16,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:19:16,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059484978] [2021-11-06 16:19:16,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059484978] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:19:16,110 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:19:16,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:19:16,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351227509] [2021-11-06 16:19:16,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:19:16,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:19:16,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:19:16,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:19:16,113 INFO L87 Difference]: Start difference. First operand 130827 states and 185286 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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) [2021-11-06 16:19:18,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:19:18,925 INFO L93 Difference]: Finished difference Result 198137 states and 280392 transitions. [2021-11-06 16:19:18,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:19:18,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 165 [2021-11-06 16:19:18,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:19:19,582 INFO L225 Difference]: With dead ends: 198137 [2021-11-06 16:19:19,583 INFO L226 Difference]: Without dead ends: 67394 [2021-11-06 16:19:20,083 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:19:20,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67394 states. [2021-11-06 16:19:21,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67394 to 65244. [2021-11-06 16:19:21,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65244 states, 61062 states have (on average 1.3665127247715436) internal successors, (83442), 61296 states have internal predecessors, (83442), 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) [2021-11-06 16:19:22,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65244 states to 65244 states and 92430 transitions. [2021-11-06 16:19:22,056 INFO L78 Accepts]: Start accepts. Automaton has 65244 states and 92430 transitions. Word has length 165 [2021-11-06 16:19:22,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:19:22,057 INFO L470 AbstractCegarLoop]: Abstraction has 65244 states and 92430 transitions. [2021-11-06 16:19:22,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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) [2021-11-06 16:19:22,058 INFO L276 IsEmpty]: Start isEmpty. Operand 65244 states and 92430 transitions. [2021-11-06 16:19:22,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-06 16:19:22,072 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:19:22,072 INFO L513 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] [2021-11-06 16:19:22,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 16:19:22,073 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 16:19:22,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:19:22,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1866473330, now seen corresponding path program 1 times [2021-11-06 16:19:22,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:19:22,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773263410] [2021-11-06 16:19:22,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:19:22,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:19:22,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:19:22,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:19:22,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:19:22,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773263410] [2021-11-06 16:19:22,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773263410] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:19:22,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:19:22,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 16:19:22,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077664648] [2021-11-06 16:19:22,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 16:19:22,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:19:22,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 16:19:22,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 16:19:22,413 INFO L87 Difference]: Start difference. First operand 65244 states and 92430 transitions. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 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) [2021-11-06 16:19:26,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:19:26,752 INFO L93 Difference]: Finished difference Result 130098 states and 184338 transitions. [2021-11-06 16:19:26,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 16:19:26,753 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 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 178 [2021-11-06 16:19:26,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:19:27,252 INFO L225 Difference]: With dead ends: 130098 [2021-11-06 16:19:27,253 INFO L226 Difference]: Without dead ends: 65255 [2021-11-06 16:19:27,416 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:19:27,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65255 states. [2021-11-06 16:19:28,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65255 to 65246. [2021-11-06 16:19:28,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65246 states, 61064 states have (on average 1.3664352155115944) internal successors, (83440), 61298 states have internal predecessors, (83440), 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) [2021-11-06 16:19:29,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65246 states to 65246 states and 92428 transitions. [2021-11-06 16:19:29,295 INFO L78 Accepts]: Start accepts. Automaton has 65246 states and 92428 transitions. Word has length 178 [2021-11-06 16:19:29,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:19:29,296 INFO L470 AbstractCegarLoop]: Abstraction has 65246 states and 92428 transitions. [2021-11-06 16:19:29,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 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) [2021-11-06 16:19:29,296 INFO L276 IsEmpty]: Start isEmpty. Operand 65246 states and 92428 transitions. [2021-11-06 16:19:29,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-06 16:19:29,310 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:19:29,310 INFO L513 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] [2021-11-06 16:19:29,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 16:19:29,310 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 16:19:29,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:19:29,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1973694521, now seen corresponding path program 1 times [2021-11-06 16:19:29,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:19:29,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843182366] [2021-11-06 16:19:29,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:19:29,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:19:29,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:19:30,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 16:19:30,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:19:30,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843182366] [2021-11-06 16:19:30,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843182366] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:19:30,060 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:19:30,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 16:19:30,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232394343] [2021-11-06 16:19:30,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 16:19:30,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:19:30,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 16:19:30,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:19:30,062 INFO L87 Difference]: Start difference. First operand 65246 states and 92428 transitions. Second operand has 5 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 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) [2021-11-06 16:19:32,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:19:32,074 INFO L93 Difference]: Finished difference Result 130181 states and 184410 transitions. [2021-11-06 16:19:32,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 16:19:32,075 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 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 182 [2021-11-06 16:19:32,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:19:32,378 INFO L225 Difference]: With dead ends: 130181 [2021-11-06 16:19:32,378 INFO L226 Difference]: Without dead ends: 65344 [2021-11-06 16:19:32,589 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-06 16:19:32,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65344 states. [2021-11-06 16:19:34,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65344 to 65246. [2021-11-06 16:19:34,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65246 states, 61064 states have (on average 1.3653871348093802) internal successors, (83376), 61298 states have internal predecessors, (83376), 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) [2021-11-06 16:19:34,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65246 states to 65246 states and 92364 transitions. [2021-11-06 16:19:34,620 INFO L78 Accepts]: Start accepts. Automaton has 65246 states and 92364 transitions. Word has length 182 [2021-11-06 16:19:34,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:19:34,620 INFO L470 AbstractCegarLoop]: Abstraction has 65246 states and 92364 transitions. [2021-11-06 16:19:34,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 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) [2021-11-06 16:19:34,621 INFO L276 IsEmpty]: Start isEmpty. Operand 65246 states and 92364 transitions. [2021-11-06 16:19:34,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-06 16:19:34,634 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:19:34,634 INFO L513 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] [2021-11-06 16:19:34,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 16:19:34,635 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 16:19:34,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:19:34,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1093218855, now seen corresponding path program 1 times [2021-11-06 16:19:34,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:19:34,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152799892] [2021-11-06 16:19:34,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:19:34,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:19:34,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:19:35,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 16:19:35,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:19:35,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152799892] [2021-11-06 16:19:35,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152799892] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:19:35,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:19:35,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 16:19:35,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853232581] [2021-11-06 16:19:35,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 16:19:35,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:19:35,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 16:19:35,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-06 16:19:35,187 INFO L87 Difference]: Start difference. First operand 65246 states and 92364 transitions. Second operand has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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) [2021-11-06 16:19:37,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:19:37,583 INFO L93 Difference]: Finished difference Result 142160 states and 202742 transitions. [2021-11-06 16:19:37,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 16:19:37,584 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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 183 [2021-11-06 16:19:37,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:19:37,900 INFO L225 Difference]: With dead ends: 142160 [2021-11-06 16:19:37,901 INFO L226 Difference]: Without dead ends: 77323 [2021-11-06 16:19:38,151 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-06 16:19:38,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77323 states. [2021-11-06 16:19:39,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77323 to 65246. [2021-11-06 16:19:39,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65246 states, 61064 states have (on average 1.3643390541071663) internal successors, (83312), 61298 states have internal predecessors, (83312), 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) [2021-11-06 16:19:40,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65246 states to 65246 states and 92300 transitions. [2021-11-06 16:19:40,382 INFO L78 Accepts]: Start accepts. Automaton has 65246 states and 92300 transitions. Word has length 183 [2021-11-06 16:19:40,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:19:40,384 INFO L470 AbstractCegarLoop]: Abstraction has 65246 states and 92300 transitions. [2021-11-06 16:19:40,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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) [2021-11-06 16:19:40,384 INFO L276 IsEmpty]: Start isEmpty. Operand 65246 states and 92300 transitions. [2021-11-06 16:19:40,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-06 16:19:40,400 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:19:40,400 INFO L513 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] [2021-11-06 16:19:40,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 16:19:40,401 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)] === [2021-11-06 16:19:40,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:19:40,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1540525406, now seen corresponding path program 1 times [2021-11-06 16:19:40,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:19:40,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705281179] [2021-11-06 16:19:40,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:19:40,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:19:40,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:19:40,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 16:19:40,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:19:40,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705281179] [2021-11-06 16:19:40,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705281179] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:19:40,732 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:19:40,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 16:19:40,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93482687] [2021-11-06 16:19:40,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 16:19:40,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:19:40,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 16:19:40,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-06 16:19:40,733 INFO L87 Difference]: Start difference. First operand 65246 states and 92300 transitions. Second operand has 6 states, 6 states have (on average 30.5) internal successors, (183), 6 states have internal predecessors, (183), 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)