./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--touchscreen--usbtouchscreen.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--touchscreen--usbtouchscreen.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 5c13092b5fe0ffbf7fbf1fe31d493be6a68ca2455b811b10fd7983ff470e432f --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 16:02:30,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 16:02:30,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 16:02:30,424 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 16:02:30,424 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 16:02:30,426 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 16:02:30,428 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 16:02:30,431 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 16:02:30,433 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 16:02:30,436 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 16:02:30,437 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 16:02:30,438 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 16:02:30,438 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 16:02:30,439 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 16:02:30,440 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 16:02:30,445 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 16:02:30,445 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 16:02:30,448 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 16:02:30,449 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 16:02:30,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 16:02:30,454 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 16:02:30,455 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 16:02:30,456 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 16:02:30,457 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 16:02:30,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 16:02:30,462 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 16:02:30,462 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 16:02:30,463 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 16:02:30,463 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 16:02:30,464 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 16:02:30,464 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 16:02:30,465 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 16:02:30,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 16:02:30,466 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 16:02:30,467 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 16:02:30,467 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 16:02:30,468 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 16:02:30,468 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 16:02:30,468 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 16:02:30,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 16:02:30,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 16:02:30,473 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 16:02:30,503 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 16:02:30,503 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 16:02:30,504 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 16:02:30,504 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 16:02:30,505 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 16:02:30,505 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 16:02:30,506 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 16:02:30,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 16:02:30,506 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 16:02:30,506 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 16:02:30,507 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 16:02:30,507 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 16:02:30,507 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 16:02:30,508 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 16:02:30,508 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 16:02:30,508 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 16:02:30,508 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 16:02:30,508 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 16:02:30,508 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 16:02:30,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 16:02:30,509 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 16:02:30,509 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 16:02:30,509 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 16:02:30,509 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 16:02:30,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 16:02:30,510 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 16:02:30,510 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 16:02:30,510 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 16:02:30,510 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 16:02:30,510 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c13092b5fe0ffbf7fbf1fe31d493be6a68ca2455b811b10fd7983ff470e432f [2021-11-05 16:02:30,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 16:02:30,766 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 16:02:30,768 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 16:02:30,769 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 16:02:30,770 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 16:02:30,771 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--touchscreen--usbtouchscreen.ko-entry_point.cil.out.i [2021-11-05 16:02:30,831 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea5d16d4e/2d41c07df57b44a0a0b522652aac46db/FLAGaebf3945c [2021-11-05 16:02:31,411 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 16:02:31,411 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--touchscreen--usbtouchscreen.ko-entry_point.cil.out.i [2021-11-05 16:02:31,435 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea5d16d4e/2d41c07df57b44a0a0b522652aac46db/FLAGaebf3945c [2021-11-05 16:02:31,854 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea5d16d4e/2d41c07df57b44a0a0b522652aac46db [2021-11-05 16:02:31,857 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 16:02:31,858 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 16:02:31,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 16:02:31,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 16:02:31,861 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 16:02:31,862 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 04:02:31" (1/1) ... [2021-11-05 16:02:31,862 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5515e6e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:02:31, skipping insertion in model container [2021-11-05 16:02:31,863 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 04:02:31" (1/1) ... [2021-11-05 16:02:31,867 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 16:02:31,949 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 16:02:32,534 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--touchscreen--usbtouchscreen.ko-entry_point.cil.out.i[108030,108043] [2021-11-05 16:02:32,917 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 16:02:32,991 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 16:02:33,096 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--touchscreen--usbtouchscreen.ko-entry_point.cil.out.i[108030,108043] [2021-11-05 16:02:33,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 16:02:33,383 INFO L208 MainTranslator]: Completed translation [2021-11-05 16:02:33,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:02:33 WrapperNode [2021-11-05 16:02:33,383 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 16:02:33,385 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 16:02:33,385 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 16:02:33,385 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 16:02:33,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:02:33" (1/1) ... [2021-11-05 16:02:33,449 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:02:33" (1/1) ... [2021-11-05 16:02:33,612 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 16:02:33,613 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 16:02:33,613 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 16:02:33,613 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 16:02:33,621 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:02:33" (1/1) ... [2021-11-05 16:02:33,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:02:33" (1/1) ... [2021-11-05 16:02:33,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:02:33" (1/1) ... [2021-11-05 16:02:33,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:02:33" (1/1) ... [2021-11-05 16:02:33,838 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:02:33" (1/1) ... [2021-11-05 16:02:33,867 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:02:33" (1/1) ... [2021-11-05 16:02:33,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:02:33" (1/1) ... [2021-11-05 16:02:33,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 16:02:33,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 16:02:33,984 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 16:02:33,984 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 16:02:33,984 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:02:33" (1/1) ... [2021-11-05 16:02:33,990 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 16:02:33,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:02:34,006 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-05 16:02:34,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-05 16:02:34,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 16:02:34,033 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_8 [2021-11-05 16:02:34,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_8 [2021-11-05 16:02:34,034 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_5 [2021-11-05 16:02:34,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_5 [2021-11-05 16:02:34,034 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_6 [2021-11-05 16:02:34,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_6 [2021-11-05 16:02:34,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 16:02:34,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 16:02:34,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 16:02:34,035 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-05 16:02:34,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-05 16:02:34,035 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2021-11-05 16:02:34,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2021-11-05 16:02:34,035 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_resume [2021-11-05 16:02:34,036 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_resume [2021-11-05 16:02:34,036 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_reset_resume [2021-11-05 16:02:34,036 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_reset_resume [2021-11-05 16:02:34,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 16:02:34,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 16:02:34,036 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_disconnect [2021-11-05 16:02:34,036 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_disconnect [2021-11-05 16:02:34,037 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_22 [2021-11-05 16:02:34,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_22 [2021-11-05 16:02:34,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 16:02:34,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 16:02:34,037 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-05 16:02:34,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-05 16:02:34,037 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-05 16:02:34,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-05 16:02:34,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 16:02:34,038 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_14 [2021-11-05 16:02:34,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_14 [2021-11-05 16:02:34,038 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_16 [2021-11-05 16:02:34,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_16 [2021-11-05 16:02:34,038 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_probe [2021-11-05 16:02:34,038 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_probe [2021-11-05 16:02:34,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 16:02:34,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 16:02:34,038 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_open [2021-11-05 16:02:34,039 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_open [2021-11-05 16:02:34,039 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_irq [2021-11-05 16:02:34,039 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_irq [2021-11-05 16:02:34,039 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-05 16:02:34,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-05 16:02:34,040 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_process_pkt [2021-11-05 16:02:34,040 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_process_pkt [2021-11-05 16:02:34,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 16:02:34,040 INFO L130 BoogieDeclarations]: Found specification of procedure nexio_read_data [2021-11-05 16:02:34,040 INFO L138 BoogieDeclarations]: Found implementation of procedure nexio_read_data [2021-11-05 16:02:34,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 16:02:34,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 16:02:34,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 16:02:34,041 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_process_multi [2021-11-05 16:02:34,041 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_process_multi [2021-11-05 16:02:40,524 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 16:02:40,525 INFO L299 CfgBuilder]: Removed 685 assume(true) statements. [2021-11-05 16:02:40,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 04:02:40 BoogieIcfgContainer [2021-11-05 16:02:40,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 16:02:40,529 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 16:02:40,529 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 16:02:40,531 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 16:02:40,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 04:02:31" (1/3) ... [2021-11-05 16:02:40,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38e65667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 04:02:40, skipping insertion in model container [2021-11-05 16:02:40,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:02:33" (2/3) ... [2021-11-05 16:02:40,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38e65667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 04:02:40, skipping insertion in model container [2021-11-05 16:02:40,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 04:02:40" (3/3) ... [2021-11-05 16:02:40,534 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--input--touchscreen--usbtouchscreen.ko-entry_point.cil.out.i [2021-11-05 16:02:40,537 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 16:02:40,537 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-05 16:02:40,574 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 16:02:40,578 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-05 16:02:40,578 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-05 16:02:40,605 INFO L276 IsEmpty]: Start isEmpty. Operand has 922 states, 856 states have (on average 1.419392523364486) internal successors, (1215), 867 states have internal predecessors, (1215), 37 states have call successors, (37), 20 states have call predecessors, (37), 20 states have return successors, (37), 35 states have call predecessors, (37), 37 states have call successors, (37) [2021-11-05 16:02:40,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-05 16:02:40,609 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:02:40,610 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:02:40,610 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [usbtouch_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 16:02:40,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:02:40,614 INFO L85 PathProgramCache]: Analyzing trace with hash 55747401, now seen corresponding path program 1 times [2021-11-05 16:02:40,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:02:40,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523367948] [2021-11-05 16:02:40,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:02:40,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:02:40,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:02:41,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:02:41,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:02:41,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523367948] [2021-11-05 16:02:41,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523367948] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:02:41,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:02:41,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:02:41,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334310255] [2021-11-05 16:02:41,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:02:41,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:02:41,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:02:41,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:02:41,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:02:41,077 INFO L87 Difference]: Start difference. First operand has 922 states, 856 states have (on average 1.419392523364486) internal successors, (1215), 867 states have internal predecessors, (1215), 37 states have call successors, (37), 20 states have call predecessors, (37), 20 states have return successors, (37), 35 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:02:43,146 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:02:43,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:02:43,405 INFO L93 Difference]: Finished difference Result 2720 states and 3883 transitions. [2021-11-05 16:02:43,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:02:43,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 17 [2021-11-05 16:02:43,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:02:43,428 INFO L225 Difference]: With dead ends: 2720 [2021-11-05 16:02:43,428 INFO L226 Difference]: Without dead ends: 1767 [2021-11-05 16:02:43,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.47ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:02:43,443 INFO L933 BasicCegarLoop]: 1291 mSDtfsCounter, 1213 mSDsluCounter, 1233 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2066.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1213 SdHoareTripleChecker+Valid, 2524 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.04ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2196.40ms IncrementalHoareTripleChecker+Time [2021-11-05 16:02:43,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1213 Valid, 2524 Invalid, 16 Unknown, 0 Unchecked, 13.04ms Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 2196.40ms Time] [2021-11-05 16:02:43,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2021-11-05 16:02:43,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1761. [2021-11-05 16:02:43,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1761 states, 1639 states have (on average 1.3691275167785235) internal successors, (2244), 1652 states have internal predecessors, (2244), 74 states have call successors, (74), 40 states have call predecessors, (74), 40 states have return successors, (74), 70 states have call predecessors, (74), 74 states have call successors, (74) [2021-11-05 16:02:43,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1761 states to 1761 states and 2392 transitions. [2021-11-05 16:02:43,554 INFO L78 Accepts]: Start accepts. Automaton has 1761 states and 2392 transitions. Word has length 17 [2021-11-05 16:02:43,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:02:43,554 INFO L470 AbstractCegarLoop]: Abstraction has 1761 states and 2392 transitions. [2021-11-05 16:02:43,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:02:43,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1761 states and 2392 transitions. [2021-11-05 16:02:43,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-05 16:02:43,560 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:02:43,561 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:02:43,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 16:02:43,563 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [usbtouch_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 16:02:43,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:02:43,565 INFO L85 PathProgramCache]: Analyzing trace with hash 772708412, now seen corresponding path program 1 times [2021-11-05 16:02:43,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:02:43,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140995605] [2021-11-05 16:02:43,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:02:43,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:02:43,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:02:43,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:02:43,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:02:43,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140995605] [2021-11-05 16:02:43,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140995605] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:02:43,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:02:43,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:02:43,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485587141] [2021-11-05 16:02:43,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:02:43,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:02:43,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:02:43,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:02:43,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:02:43,789 INFO L87 Difference]: Start difference. First operand 1761 states and 2392 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:02:43,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:02:43,876 INFO L93 Difference]: Finished difference Result 1791 states and 2420 transitions. [2021-11-05 16:02:43,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:02:43,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 24 [2021-11-05 16:02:43,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:02:43,883 INFO L225 Difference]: With dead ends: 1791 [2021-11-05 16:02:43,884 INFO L226 Difference]: Without dead ends: 1776 [2021-11-05 16:02:43,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.92ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:02:43,885 INFO L933 BasicCegarLoop]: 1232 mSDtfsCounter, 1214 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1214 SdHoareTripleChecker+Valid, 1246 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.38ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.76ms IncrementalHoareTripleChecker+Time [2021-11-05 16:02:43,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1214 Valid, 1246 Invalid, 6 Unknown, 0 Unchecked, 4.38ms Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 49.76ms Time] [2021-11-05 16:02:43,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1776 states. [2021-11-05 16:02:43,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1776 to 1761. [2021-11-05 16:02:43,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1761 states, 1639 states have (on average 1.3685173886516169) internal successors, (2243), 1652 states have internal predecessors, (2243), 74 states have call successors, (74), 40 states have call predecessors, (74), 40 states have return successors, (74), 70 states have call predecessors, (74), 74 states have call successors, (74) [2021-11-05 16:02:43,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1761 states to 1761 states and 2391 transitions. [2021-11-05 16:02:43,925 INFO L78 Accepts]: Start accepts. Automaton has 1761 states and 2391 transitions. Word has length 24 [2021-11-05 16:02:43,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:02:43,925 INFO L470 AbstractCegarLoop]: Abstraction has 1761 states and 2391 transitions. [2021-11-05 16:02:43,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:02:43,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1761 states and 2391 transitions. [2021-11-05 16:02:43,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-05 16:02:43,927 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:02:43,927 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:02:43,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 16:02:43,935 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [usbtouch_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 16:02:43,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:02:43,935 INFO L85 PathProgramCache]: Analyzing trace with hash 772767994, now seen corresponding path program 1 times [2021-11-05 16:02:43,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:02:43,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532205173] [2021-11-05 16:02:43,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:02:43,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:02:44,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:02:44,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:02:44,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:02:44,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532205173] [2021-11-05 16:02:44,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532205173] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:02:44,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:02:44,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 16:02:44,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923312355] [2021-11-05 16:02:44,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:02:44,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:02:44,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:02:44,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:02:44,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:02:44,224 INFO L87 Difference]: Start difference. First operand 1761 states and 2391 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:02:44,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:02:44,362 INFO L93 Difference]: Finished difference Result 5261 states and 7444 transitions. [2021-11-05 16:02:44,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:02:44,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 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 24 [2021-11-05 16:02:44,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:02:44,378 INFO L225 Difference]: With dead ends: 5261 [2021-11-05 16:02:44,378 INFO L226 Difference]: Without dead ends: 3510 [2021-11-05 16:02:44,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.64ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:02:44,385 INFO L933 BasicCegarLoop]: 1281 mSDtfsCounter, 1227 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1227 SdHoareTripleChecker+Valid, 2505 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.76ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.36ms IncrementalHoareTripleChecker+Time [2021-11-05 16:02:44,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1227 Valid, 2505 Invalid, 37 Unknown, 0 Unchecked, 6.76ms Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 44.36ms Time] [2021-11-05 16:02:44,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3510 states. [2021-11-05 16:02:44,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3510 to 3492. [2021-11-05 16:02:44,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3492 states, 3256 states have (on average 1.3673218673218672) internal successors, (4452), 3275 states have internal predecessors, (4452), 148 states have call successors, (148), 80 states have call predecessors, (148), 80 states have return successors, (296), 140 states have call predecessors, (296), 148 states have call successors, (296) [2021-11-05 16:02:44,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3492 states to 3492 states and 4896 transitions. [2021-11-05 16:02:44,482 INFO L78 Accepts]: Start accepts. Automaton has 3492 states and 4896 transitions. Word has length 24 [2021-11-05 16:02:44,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:02:44,483 INFO L470 AbstractCegarLoop]: Abstraction has 3492 states and 4896 transitions. [2021-11-05 16:02:44,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:02:44,483 INFO L276 IsEmpty]: Start isEmpty. Operand 3492 states and 4896 transitions. [2021-11-05 16:02:44,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-05 16:02:44,484 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:02:44,484 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:02:44,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 16:02:44,485 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [usbtouch_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 16:02:44,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:02:44,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1813995682, now seen corresponding path program 1 times [2021-11-05 16:02:44,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:02:44,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685153399] [2021-11-05 16:02:44,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:02:44,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:02:44,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:02:44,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:02:44,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:02:44,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685153399] [2021-11-05 16:02:44,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685153399] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:02:44,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:02:44,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 16:02:44,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583279693] [2021-11-05 16:02:44,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:02:44,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:02:44,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:02:44,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:02:44,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:02:44,632 INFO L87 Difference]: Start difference. First operand 3492 states and 4896 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:02:44,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:02:44,704 INFO L93 Difference]: Finished difference Result 3492 states and 4896 transitions. [2021-11-05 16:02:44,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:02:44,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 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 25 [2021-11-05 16:02:44,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:02:44,716 INFO L225 Difference]: With dead ends: 3492 [2021-11-05 16:02:44,716 INFO L226 Difference]: Without dead ends: 3490 [2021-11-05 16:02:44,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.59ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:02:44,718 INFO L933 BasicCegarLoop]: 1216 mSDtfsCounter, 1194 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1194 SdHoareTripleChecker+Valid, 1216 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.62ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.40ms IncrementalHoareTripleChecker+Time [2021-11-05 16:02:44,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1194 Valid, 1216 Invalid, 1 Unknown, 0 Unchecked, 2.62ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.40ms Time] [2021-11-05 16:02:44,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3490 states. [2021-11-05 16:02:44,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3490 to 3490. [2021-11-05 16:02:44,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3490 states, 3255 states have (on average 1.3671274961597542) internal successors, (4450), 3273 states have internal predecessors, (4450), 148 states have call successors, (148), 80 states have call predecessors, (148), 80 states have return successors, (296), 140 states have call predecessors, (296), 148 states have call successors, (296) [2021-11-05 16:02:44,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3490 states to 3490 states and 4894 transitions. [2021-11-05 16:02:44,803 INFO L78 Accepts]: Start accepts. Automaton has 3490 states and 4894 transitions. Word has length 25 [2021-11-05 16:02:44,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:02:44,804 INFO L470 AbstractCegarLoop]: Abstraction has 3490 states and 4894 transitions. [2021-11-05 16:02:44,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:02:44,804 INFO L276 IsEmpty]: Start isEmpty. Operand 3490 states and 4894 transitions. [2021-11-05 16:02:44,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-05 16:02:44,805 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:02:44,805 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:02:44,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 16:02:44,805 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [usbtouch_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 16:02:44,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:02:44,806 INFO L85 PathProgramCache]: Analyzing trace with hash -399291004, now seen corresponding path program 1 times [2021-11-05 16:02:44,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:02:44,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737321320] [2021-11-05 16:02:44,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:02:44,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:02:44,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:02:44,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:02:44,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:02:44,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737321320] [2021-11-05 16:02:44,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737321320] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:02:44,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:02:44,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 16:02:44,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804069851] [2021-11-05 16:02:44,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:02:44,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:02:44,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:02:44,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:02:44,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:02:44,913 INFO L87 Difference]: Start difference. First operand 3490 states and 4894 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:02:44,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:02:44,968 INFO L93 Difference]: Finished difference Result 3490 states and 4894 transitions. [2021-11-05 16:02:44,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:02:44,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 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 26 [2021-11-05 16:02:44,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:02:44,980 INFO L225 Difference]: With dead ends: 3490 [2021-11-05 16:02:44,980 INFO L226 Difference]: Without dead ends: 3488 [2021-11-05 16:02:44,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.79ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:02:44,981 INFO L933 BasicCegarLoop]: 1214 mSDtfsCounter, 1191 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1191 SdHoareTripleChecker+Valid, 1214 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.05ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.89ms IncrementalHoareTripleChecker+Time [2021-11-05 16:02:44,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1191 Valid, 1214 Invalid, 1 Unknown, 0 Unchecked, 2.05ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.89ms Time] [2021-11-05 16:02:44,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3488 states. [2021-11-05 16:02:45,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3488 to 3488. [2021-11-05 16:02:45,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3488 states, 3254 states have (on average 1.3669330055316533) internal successors, (4448), 3271 states have internal predecessors, (4448), 148 states have call successors, (148), 80 states have call predecessors, (148), 80 states have return successors, (296), 140 states have call predecessors, (296), 148 states have call successors, (296) [2021-11-05 16:02:45,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3488 states to 3488 states and 4892 transitions. [2021-11-05 16:02:45,137 INFO L78 Accepts]: Start accepts. Automaton has 3488 states and 4892 transitions. Word has length 26 [2021-11-05 16:02:45,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:02:45,137 INFO L470 AbstractCegarLoop]: Abstraction has 3488 states and 4892 transitions. [2021-11-05 16:02:45,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:02:45,138 INFO L276 IsEmpty]: Start isEmpty. Operand 3488 states and 4892 transitions. [2021-11-05 16:02:45,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-05 16:02:45,138 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:02:45,139 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:02:45,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 16:02:45,139 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [usbtouch_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 16:02:45,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:02:45,139 INFO L85 PathProgramCache]: Analyzing trace with hash 506881064, now seen corresponding path program 1 times [2021-11-05 16:02:45,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:02:45,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546695681] [2021-11-05 16:02:45,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:02:45,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:02:45,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:02:45,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:02:45,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:02:45,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546695681] [2021-11-05 16:02:45,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546695681] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:02:45,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:02:45,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 16:02:45,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485910256] [2021-11-05 16:02:45,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:02:45,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:02:45,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:02:45,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:02:45,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:02:45,284 INFO L87 Difference]: Start difference. First operand 3488 states and 4892 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:02:45,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:02:45,450 INFO L93 Difference]: Finished difference Result 10407 states and 15205 transitions. [2021-11-05 16:02:45,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:02:45,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 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 27 [2021-11-05 16:02:45,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:02:45,477 INFO L225 Difference]: With dead ends: 10407 [2021-11-05 16:02:45,477 INFO L226 Difference]: Without dead ends: 6929 [2021-11-05 16:02:45,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.07ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:02:45,493 INFO L933 BasicCegarLoop]: 1293 mSDtfsCounter, 1174 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1174 SdHoareTripleChecker+Valid, 2517 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.62ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.03ms IncrementalHoareTripleChecker+Time [2021-11-05 16:02:45,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1174 Valid, 2517 Invalid, 24 Unknown, 0 Unchecked, 3.62ms Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 23.03ms Time] [2021-11-05 16:02:45,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6929 states. [2021-11-05 16:02:45,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6929 to 6894. [2021-11-05 16:02:45,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6894 states, 6434 states have (on average 1.3683556108175319) internal successors, (8804), 6466 states have internal predecessors, (8804), 296 states have call successors, (296), 160 states have call predecessors, (296), 158 states have return successors, (880), 275 states have call predecessors, (880), 296 states have call successors, (880) [2021-11-05 16:02:45,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6894 states to 6894 states and 9980 transitions. [2021-11-05 16:02:45,676 INFO L78 Accepts]: Start accepts. Automaton has 6894 states and 9980 transitions. Word has length 27 [2021-11-05 16:02:45,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:02:45,676 INFO L470 AbstractCegarLoop]: Abstraction has 6894 states and 9980 transitions. [2021-11-05 16:02:45,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:02:45,676 INFO L276 IsEmpty]: Start isEmpty. Operand 6894 states and 9980 transitions. [2021-11-05 16:02:45,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-05 16:02:45,677 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:02:45,677 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:02:45,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 16:02:45,678 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [usbtouch_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 16:02:45,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:02:45,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1466555890, now seen corresponding path program 1 times [2021-11-05 16:02:45,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:02:45,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067827153] [2021-11-05 16:02:45,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:02:45,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:02:45,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:02:45,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:02:45,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:02:45,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067827153] [2021-11-05 16:02:45,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067827153] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:02:45,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:02:45,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 16:02:45,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83866581] [2021-11-05 16:02:45,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:02:45,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:02:45,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:02:45,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:02:45,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:02:45,782 INFO L87 Difference]: Start difference. First operand 6894 states and 9980 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:02:45,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:02:45,940 INFO L93 Difference]: Finished difference Result 6894 states and 9980 transitions. [2021-11-05 16:02:45,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:02:45,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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 28 [2021-11-05 16:02:45,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:02:45,965 INFO L225 Difference]: With dead ends: 6894 [2021-11-05 16:02:45,965 INFO L226 Difference]: Without dead ends: 6885 [2021-11-05 16:02:45,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.77ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:02:45,969 INFO L933 BasicCegarLoop]: 1213 mSDtfsCounter, 1187 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1187 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.91ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 16:02:45,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1187 Valid, 1213 Invalid, 0 Unknown, 0 Unchecked, 1.91ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 16:02:45,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6885 states. [2021-11-05 16:02:46,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6885 to 6885. [2021-11-05 16:02:46,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6885 states, 6426 states have (on average 1.3681917211328976) internal successors, (8792), 6457 states have internal predecessors, (8792), 296 states have call successors, (296), 160 states have call predecessors, (296), 158 states have return successors, (880), 275 states have call predecessors, (880), 296 states have call successors, (880) [2021-11-05 16:02:46,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6885 states to 6885 states and 9968 transitions. [2021-11-05 16:02:46,153 INFO L78 Accepts]: Start accepts. Automaton has 6885 states and 9968 transitions. Word has length 28 [2021-11-05 16:02:46,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:02:46,153 INFO L470 AbstractCegarLoop]: Abstraction has 6885 states and 9968 transitions. [2021-11-05 16:02:46,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:02:46,153 INFO L276 IsEmpty]: Start isEmpty. Operand 6885 states and 9968 transitions. [2021-11-05 16:02:46,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-05 16:02:46,156 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:02:46,156 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:02:46,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 16:02:46,156 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [usbtouch_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 16:02:46,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:02:46,157 INFO L85 PathProgramCache]: Analyzing trace with hash -656058121, now seen corresponding path program 1 times [2021-11-05 16:02:46,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:02:46,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811946198] [2021-11-05 16:02:46,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:02:46,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:02:46,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:02:46,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:02:46,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:02:46,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811946198] [2021-11-05 16:02:46,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811946198] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:02:46,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:02:46,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:02:46,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653957829] [2021-11-05 16:02:46,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:02:46,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:02:46,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:02:46,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:02:46,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:02:46,251 INFO L87 Difference]: Start difference. First operand 6885 states and 9968 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:02:46,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:02:46,475 INFO L93 Difference]: Finished difference Result 13881 states and 20095 transitions. [2021-11-05 16:02:46,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:02:46,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-05 16:02:46,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:02:46,501 INFO L225 Difference]: With dead ends: 13881 [2021-11-05 16:02:46,502 INFO L226 Difference]: Without dead ends: 7006 [2021-11-05 16:02:46,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.72ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:02:46,593 INFO L933 BasicCegarLoop]: 1215 mSDtfsCounter, 36 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 2392 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.38ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.47ms IncrementalHoareTripleChecker+Time [2021-11-05 16:02:46,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 2392 Invalid, 24 Unknown, 0 Unchecked, 2.38ms Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 58.47ms Time] [2021-11-05 16:02:46,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7006 states. [2021-11-05 16:02:46,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7006 to 6985. [2021-11-05 16:02:46,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6985 states, 6526 states have (on average 1.3691388292981919) internal successors, (8935), 6557 states have internal predecessors, (8935), 296 states have call successors, (296), 160 states have call predecessors, (296), 158 states have return successors, (880), 275 states have call predecessors, (880), 296 states have call successors, (880) [2021-11-05 16:02:46,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6985 states to 6985 states and 10111 transitions. [2021-11-05 16:02:46,776 INFO L78 Accepts]: Start accepts. Automaton has 6985 states and 10111 transitions. Word has length 47 [2021-11-05 16:02:46,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:02:46,777 INFO L470 AbstractCegarLoop]: Abstraction has 6985 states and 10111 transitions. [2021-11-05 16:02:46,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:02:46,777 INFO L276 IsEmpty]: Start isEmpty. Operand 6985 states and 10111 transitions. [2021-11-05 16:02:46,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-05 16:02:46,781 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:02:46,781 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:02:46,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 16:02:46,781 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [usbtouch_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 16:02:46,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:02:46,782 INFO L85 PathProgramCache]: Analyzing trace with hash -91498608, now seen corresponding path program 1 times [2021-11-05 16:02:46,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:02:46,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153202339] [2021-11-05 16:02:46,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:02:46,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:02:46,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:02:46,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:02:46,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:02:46,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153202339] [2021-11-05 16:02:46,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153202339] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:02:46,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:02:46,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:02:46,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260579503] [2021-11-05 16:02:46,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:02:46,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:02:46,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:02:46,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:02:46,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:02:46,886 INFO L87 Difference]: Start difference. First operand 6985 states and 10111 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:02:48,925 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:02:49,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:02:49,509 INFO L93 Difference]: Finished difference Result 20644 states and 29812 transitions. [2021-11-05 16:02:49,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:02:49,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-05 16:02:49,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:02:49,558 INFO L225 Difference]: With dead ends: 20644 [2021-11-05 16:02:49,559 INFO L226 Difference]: Without dead ends: 13669 [2021-11-05 16:02:49,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.74ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:02:49,601 INFO L933 BasicCegarLoop]: 2140 mSDtfsCounter, 1154 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2061.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1154 SdHoareTripleChecker+Valid, 3311 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.01ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2252.59ms IncrementalHoareTripleChecker+Time [2021-11-05 16:02:49,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1154 Valid, 3311 Invalid, 37 Unknown, 0 Unchecked, 6.01ms Time], IncrementalHoareTripleChecker [9 Valid, 27 Invalid, 1 Unknown, 0 Unchecked, 2252.59ms Time] [2021-11-05 16:02:49,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13669 states. [2021-11-05 16:02:50,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13669 to 13635. [2021-11-05 16:02:50,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13635 states, 12762 states have (on average 1.3660868202476102) internal successors, (17434), 12821 states have internal predecessors, (17434), 552 states have call successors, (552), 320 states have call predecessors, (552), 316 states have return successors, (1640), 509 states have call predecessors, (1640), 552 states have call successors, (1640) [2021-11-05 16:02:50,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13635 states to 13635 states and 19626 transitions. [2021-11-05 16:02:50,091 INFO L78 Accepts]: Start accepts. Automaton has 13635 states and 19626 transitions. Word has length 62 [2021-11-05 16:02:50,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:02:50,091 INFO L470 AbstractCegarLoop]: Abstraction has 13635 states and 19626 transitions. [2021-11-05 16:02:50,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:02:50,091 INFO L276 IsEmpty]: Start isEmpty. Operand 13635 states and 19626 transitions. [2021-11-05 16:02:50,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-05 16:02:50,096 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:02:50,096 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-05 16:02:50,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 16:02:50,097 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [usbtouch_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 16:02:50,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:02:50,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1369587478, now seen corresponding path program 1 times [2021-11-05 16:02:50,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:02:50,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324162570] [2021-11-05 16:02:50,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:02:50,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:02:50,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:02:50,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-05 16:02:50,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:02:50,275 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 16:02:50,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:02:50,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324162570] [2021-11-05 16:02:50,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324162570] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:02:50,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:02:50,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 16:02:50,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876215138] [2021-11-05 16:02:50,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:02:50,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:02:50,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:02:50,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:02:50,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:02:50,277 INFO L87 Difference]: Start difference. First operand 13635 states and 19626 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:02:52,316 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:02:54,404 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:02:58,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:02:58,212 INFO L93 Difference]: Finished difference Result 38152 states and 54817 transitions. [2021-11-05 16:02:58,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 16:02:58,213 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 80 [2021-11-05 16:02:58,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:02:58,301 INFO L225 Difference]: With dead ends: 38152 [2021-11-05 16:02:58,302 INFO L226 Difference]: Without dead ends: 24527 [2021-11-05 16:02:58,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.61ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:02:58,348 INFO L933 BasicCegarLoop]: 1785 mSDtfsCounter, 1787 mSDsluCounter, 2188 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 175 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6469.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1791 SdHoareTripleChecker+Valid, 3973 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.36ms SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7106.52ms IncrementalHoareTripleChecker+Time [2021-11-05 16:02:58,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1791 Valid, 3973 Invalid, 1096 Unknown, 0 Unchecked, 25.36ms Time], IncrementalHoareTripleChecker [175 Valid, 919 Invalid, 2 Unknown, 0 Unchecked, 7106.52ms Time] [2021-11-05 16:02:58,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24527 states. [2021-11-05 16:02:59,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24527 to 22673. [2021-11-05 16:02:59,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22673 states, 21062 states have (on average 1.3512961732029247) internal successors, (28461), 21197 states have internal predecessors, (28461), 808 states have call successors, (808), 480 states have call predecessors, (808), 798 states have return successors, (3020), 1019 states have call predecessors, (3020), 808 states have call successors, (3020) [2021-11-05 16:02:59,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22673 states to 22673 states and 32289 transitions. [2021-11-05 16:02:59,182 INFO L78 Accepts]: Start accepts. Automaton has 22673 states and 32289 transitions. Word has length 80 [2021-11-05 16:02:59,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:02:59,183 INFO L470 AbstractCegarLoop]: Abstraction has 22673 states and 32289 transitions. [2021-11-05 16:02:59,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:02:59,184 INFO L276 IsEmpty]: Start isEmpty. Operand 22673 states and 32289 transitions. [2021-11-05 16:02:59,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-05 16:02:59,187 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:02:59,187 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-05 16:02:59,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-05 16:02:59,188 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [usbtouch_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 16:02:59,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:02:59,188 INFO L85 PathProgramCache]: Analyzing trace with hash -930745385, now seen corresponding path program 1 times [2021-11-05 16:02:59,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:02:59,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723762219] [2021-11-05 16:02:59,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:02:59,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:02:59,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:02:59,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-05 16:02:59,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:02:59,565 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-05 16:02:59,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:02:59,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723762219] [2021-11-05 16:02:59,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723762219] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:02:59,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:02:59,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 16:02:59,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265424836] [2021-11-05 16:02:59,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:02:59,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 16:02:59,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:02:59,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 16:02:59,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-05 16:02:59,567 INFO L87 Difference]: Start difference. First operand 22673 states and 32289 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:03:01,607 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:03:03,716 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:03:05,845 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:03:12,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:03:12,247 INFO L93 Difference]: Finished difference Result 42480 states and 63651 transitions. [2021-11-05 16:03:12,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 16:03:12,248 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81 [2021-11-05 16:03:12,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:03:12,409 INFO L225 Difference]: With dead ends: 42480 [2021-11-05 16:03:12,409 INFO L226 Difference]: Without dead ends: 42474 [2021-11-05 16:03:12,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 112.36ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-05 16:03:12,443 INFO L933 BasicCegarLoop]: 2393 mSDtfsCounter, 6007 mSDsluCounter, 4376 mSDsCounter, 0 mSdLazyCounter, 2180 mSolverCounterSat, 715 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10382.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6007 SdHoareTripleChecker+Valid, 6769 SdHoareTripleChecker+Invalid, 2898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 41.90ms SdHoareTripleChecker+Time, 715 IncrementalHoareTripleChecker+Valid, 2180 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11336.35ms IncrementalHoareTripleChecker+Time [2021-11-05 16:03:12,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6007 Valid, 6769 Invalid, 2898 Unknown, 0 Unchecked, 41.90ms Time], IncrementalHoareTripleChecker [715 Valid, 2180 Invalid, 3 Unknown, 0 Unchecked, 11336.35ms Time] [2021-11-05 16:03:12,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42474 states. [2021-11-05 16:03:13,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42474 to 39459. [2021-11-05 16:03:13,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39459 states, 36388 states have (on average 1.342612949323953) internal successors, (48855), 36559 states have internal predecessors, (48855), 1380 states have call successors, (1380), 720 states have call predecessors, (1380), 1686 states have return successors, (8336), 2239 states have call predecessors, (8336), 1380 states have call successors, (8336) [2021-11-05 16:03:13,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39459 states to 39459 states and 58571 transitions. [2021-11-05 16:03:13,980 INFO L78 Accepts]: Start accepts. Automaton has 39459 states and 58571 transitions. Word has length 81 [2021-11-05 16:03:13,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:03:13,981 INFO L470 AbstractCegarLoop]: Abstraction has 39459 states and 58571 transitions. [2021-11-05 16:03:13,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:03:13,982 INFO L276 IsEmpty]: Start isEmpty. Operand 39459 states and 58571 transitions. [2021-11-05 16:03:13,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-05 16:03:13,985 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:03:13,985 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-05 16:03:13,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-05 16:03:13,986 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [usbtouch_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 16:03:13,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:03:13,986 INFO L85 PathProgramCache]: Analyzing trace with hash 844261977, now seen corresponding path program 1 times [2021-11-05 16:03:13,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:03:13,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979661310] [2021-11-05 16:03:13,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:03:13,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:03:14,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:03:14,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-05 16:03:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:03:14,227 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 16:03:14,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:03:14,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979661310] [2021-11-05 16:03:14,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979661310] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:03:14,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:03:14,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 16:03:14,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188795402] [2021-11-05 16:03:14,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:03:14,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 16:03:14,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:03:14,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 16:03:14,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 16:03:14,230 INFO L87 Difference]: Start difference. First operand 39459 states and 58571 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:03:16,334 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:03:18,440 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:03:25,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:03:25,017 INFO L93 Difference]: Finished difference Result 95811 states and 142692 transitions. [2021-11-05 16:03:25,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 16:03:25,018 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81 [2021-11-05 16:03:25,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:03:25,253 INFO L225 Difference]: With dead ends: 95811 [2021-11-05 16:03:25,254 INFO L226 Difference]: Without dead ends: 56362 [2021-11-05 16:03:25,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 99.13ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-05 16:03:25,379 INFO L933 BasicCegarLoop]: 2238 mSDtfsCounter, 1590 mSDsluCounter, 6972 mSDsCounter, 0 mSdLazyCounter, 1718 mSolverCounterSat, 154 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7905.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1594 SdHoareTripleChecker+Valid, 9210 SdHoareTripleChecker+Invalid, 1874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.24ms SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 1718 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8523.85ms IncrementalHoareTripleChecker+Time [2021-11-05 16:03:25,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1594 Valid, 9210 Invalid, 1874 Unknown, 0 Unchecked, 28.24ms Time], IncrementalHoareTripleChecker [154 Valid, 1718 Invalid, 2 Unknown, 0 Unchecked, 8523.85ms Time] [2021-11-05 16:03:25,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56362 states. [2021-11-05 16:03:26,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56362 to 39555. [2021-11-05 16:03:27,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39555 states, 36448 states have (on average 1.3420489464442493) internal successors, (48915), 36643 states have internal predecessors, (48915), 1380 states have call successors, (1380), 720 states have call predecessors, (1380), 1722 states have return successors, (8384), 2251 states have call predecessors, (8384), 1380 states have call successors, (8384) [2021-11-05 16:03:27,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39555 states to 39555 states and 58679 transitions. [2021-11-05 16:03:27,138 INFO L78 Accepts]: Start accepts. Automaton has 39555 states and 58679 transitions. Word has length 81 [2021-11-05 16:03:27,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:03:27,139 INFO L470 AbstractCegarLoop]: Abstraction has 39555 states and 58679 transitions. [2021-11-05 16:03:27,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:03:27,139 INFO L276 IsEmpty]: Start isEmpty. Operand 39555 states and 58679 transitions. [2021-11-05 16:03:27,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-05 16:03:27,144 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:03:27,144 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-05 16:03:27,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-05 16:03:27,145 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [usbtouch_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 16:03:27,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:03:27,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1715261232, now seen corresponding path program 1 times [2021-11-05 16:03:27,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:03:27,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394178983] [2021-11-05 16:03:27,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:03:27,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:03:27,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:03:27,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-05 16:03:27,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:03:27,344 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 16:03:27,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:03:27,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394178983] [2021-11-05 16:03:27,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394178983] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:03:27,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:03:27,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 16:03:27,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658558650] [2021-11-05 16:03:27,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:03:27,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 16:03:27,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:03:27,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 16:03:27,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 16:03:27,346 INFO L87 Difference]: Start difference. First operand 39555 states and 58679 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:03:29,386 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:03:31,515 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:03:37,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:03:37,786 INFO L93 Difference]: Finished difference Result 96039 states and 142956 transitions. [2021-11-05 16:03:37,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 16:03:37,787 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2021-11-05 16:03:37,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:03:37,998 INFO L225 Difference]: With dead ends: 96039 [2021-11-05 16:03:37,998 INFO L226 Difference]: Without dead ends: 56494 [2021-11-05 16:03:38,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 76.43ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-05 16:03:38,113 INFO L933 BasicCegarLoop]: 2239 mSDtfsCounter, 1590 mSDsluCounter, 6976 mSDsCounter, 0 mSdLazyCounter, 1716 mSolverCounterSat, 155 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7544.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1594 SdHoareTripleChecker+Valid, 9215 SdHoareTripleChecker+Invalid, 1873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.74ms SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1716 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8174.88ms IncrementalHoareTripleChecker+Time [2021-11-05 16:03:38,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1594 Valid, 9215 Invalid, 1873 Unknown, 0 Unchecked, 22.74ms Time], IncrementalHoareTripleChecker [155 Valid, 1716 Invalid, 2 Unknown, 0 Unchecked, 8174.88ms Time] [2021-11-05 16:03:38,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56494 states. [2021-11-05 16:03:39,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56494 to 39555. [2021-11-05 16:03:39,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39555 states, 36448 states have (on average 1.3420489464442493) internal successors, (48915), 36643 states have internal predecessors, (48915), 1380 states have call successors, (1380), 720 states have call predecessors, (1380), 1722 states have return successors, (8384), 2251 states have call predecessors, (8384), 1380 states have call successors, (8384) [2021-11-05 16:03:40,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39555 states to 39555 states and 58679 transitions. [2021-11-05 16:03:40,075 INFO L78 Accepts]: Start accepts. Automaton has 39555 states and 58679 transitions. Word has length 85 [2021-11-05 16:03:40,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:03:40,076 INFO L470 AbstractCegarLoop]: Abstraction has 39555 states and 58679 transitions. [2021-11-05 16:03:40,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:03:40,076 INFO L276 IsEmpty]: Start isEmpty. Operand 39555 states and 58679 transitions. [2021-11-05 16:03:40,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-05 16:03:40,078 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:03:40,079 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-05 16:03:40,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-05 16:03:40,079 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [usbtouch_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 16:03:40,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:03:40,079 INFO L85 PathProgramCache]: Analyzing trace with hash -267654302, now seen corresponding path program 1 times [2021-11-05 16:03:40,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:03:40,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44015537] [2021-11-05 16:03:40,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:03:40,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:03:40,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:03:40,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-05 16:03:40,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:03:40,304 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 16:03:40,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:03:40,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44015537] [2021-11-05 16:03:40,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44015537] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:03:40,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637831763] [2021-11-05 16:03:40,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:03:40,306 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:03:40,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:03:40,320 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 16:03:40,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 16:03:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:03:41,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 3412 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-05 16:03:41,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:03:41,326 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 16:03:41,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 16:03:41,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637831763] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:03:41,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 16:03:41,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2021-11-05 16:03:41,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709998578] [2021-11-05 16:03:41,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:03:41,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 16:03:41,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:03:41,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 16:03:41,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-05 16:03:41,329 INFO L87 Difference]: Start difference. First operand 39555 states and 58679 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:03:43,367 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:03:45,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:03:45,682 INFO L93 Difference]: Finished difference Result 93131 states and 138100 transitions. [2021-11-05 16:03:45,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 16:03:45,682 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 91 [2021-11-05 16:03:45,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:03:45,876 INFO L225 Difference]: With dead ends: 93131 [2021-11-05 16:03:45,877 INFO L226 Difference]: Without dead ends: 53586 [2021-11-05 16:03:45,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.31ms TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-05 16:03:45,982 INFO L933 BasicCegarLoop]: 2372 mSDtfsCounter, 1268 mSDsluCounter, 8056 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2223.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1274 SdHoareTripleChecker+Valid, 10428 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.30ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2400.72ms IncrementalHoareTripleChecker+Time [2021-11-05 16:03:45,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1274 Valid, 10428 Invalid, 70 Unknown, 0 Unchecked, 9.30ms Time], IncrementalHoareTripleChecker [5 Valid, 64 Invalid, 1 Unknown, 0 Unchecked, 2400.72ms Time] [2021-11-05 16:03:46,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53586 states. [2021-11-05 16:03:47,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53586 to 39711. [2021-11-05 16:03:47,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39711 states, 36598 states have (on average 1.3406470298923439) internal successors, (49065), 36799 states have internal predecessors, (49065), 1380 states have call successors, (1380), 720 states have call predecessors, (1380), 1728 states have return successors, (8408), 2251 states have call predecessors, (8408), 1380 states have call successors, (8408) [2021-11-05 16:03:47,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39711 states to 39711 states and 58853 transitions. [2021-11-05 16:03:47,948 INFO L78 Accepts]: Start accepts. Automaton has 39711 states and 58853 transitions. Word has length 91 [2021-11-05 16:03:47,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:03:47,948 INFO L470 AbstractCegarLoop]: Abstraction has 39711 states and 58853 transitions. [2021-11-05 16:03:47,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:03:47,949 INFO L276 IsEmpty]: Start isEmpty. Operand 39711 states and 58853 transitions. [2021-11-05 16:03:47,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-05 16:03:47,950 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:03:47,950 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-05 16:03:47,991 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-05 16:03:48,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-05 16:03:48,174 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [usbtouch_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 16:03:48,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:03:48,174 INFO L85 PathProgramCache]: Analyzing trace with hash 433410276, now seen corresponding path program 1 times [2021-11-05 16:03:48,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:03:48,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463451817] [2021-11-05 16:03:48,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:03:48,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:03:48,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:03:48,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-05 16:03:48,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:03:48,468 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 16:03:48,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:03:48,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463451817] [2021-11-05 16:03:48,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463451817] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:03:48,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:03:48,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 16:03:48,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851575038] [2021-11-05 16:03:48,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:03:48,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 16:03:48,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:03:48,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 16:03:48,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:03:48,472 INFO L87 Difference]: Start difference. First operand 39711 states and 58853 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:03:50,511 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:03:54,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:03:54,984 INFO L93 Difference]: Finished difference Result 87407 states and 139356 transitions. [2021-11-05 16:03:54,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 16:03:54,985 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 91 [2021-11-05 16:03:54,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:03:55,167 INFO L225 Difference]: With dead ends: 87407 [2021-11-05 16:03:55,167 INFO L226 Difference]: Without dead ends: 47634 [2021-11-05 16:03:55,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.61ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-05 16:03:55,304 INFO L933 BasicCegarLoop]: 1154 mSDtfsCounter, 481 mSDsluCounter, 2982 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 64 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4029.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 4136 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.74ms SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4339.56ms IncrementalHoareTripleChecker+Time [2021-11-05 16:03:55,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [487 Valid, 4136 Invalid, 865 Unknown, 0 Unchecked, 11.74ms Time], IncrementalHoareTripleChecker [64 Valid, 800 Invalid, 1 Unknown, 0 Unchecked, 4339.56ms Time] [2021-11-05 16:03:55,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47634 states. [2021-11-05 16:03:56,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47634 to 39711. [2021-11-05 16:03:56,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39711 states, 36598 states have (on average 1.3396633695830373) internal successors, (49029), 36799 states have internal predecessors, (49029), 1380 states have call successors, (1380), 720 states have call predecessors, (1380), 1728 states have return successors, (8408), 2251 states have call predecessors, (8408), 1380 states have call successors, (8408) [2021-11-05 16:03:56,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39711 states to 39711 states and 58817 transitions. [2021-11-05 16:03:56,995 INFO L78 Accepts]: Start accepts. Automaton has 39711 states and 58817 transitions. Word has length 91 [2021-11-05 16:03:56,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:03:56,996 INFO L470 AbstractCegarLoop]: Abstraction has 39711 states and 58817 transitions. [2021-11-05 16:03:56,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:03:56,997 INFO L276 IsEmpty]: Start isEmpty. Operand 39711 states and 58817 transitions. [2021-11-05 16:03:56,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-05 16:03:56,999 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:03:56,999 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-05 16:03:56,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-05 16:03:57,000 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [usbtouch_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 16:03:57,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:03:57,000 INFO L85 PathProgramCache]: Analyzing trace with hash -111315136, now seen corresponding path program 1 times [2021-11-05 16:03:57,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:03:57,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528292767] [2021-11-05 16:03:57,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:03:57,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:03:57,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:03:57,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-05 16:03:57,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:03:57,278 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 16:03:57,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:03:57,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528292767] [2021-11-05 16:03:57,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528292767] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:03:57,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:03:57,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 16:03:57,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195342195] [2021-11-05 16:03:57,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:03:57,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 16:03:57,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:03:57,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 16:03:57,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:03:57,280 INFO L87 Difference]: Start difference. First operand 39711 states and 58817 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:03:59,325 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:04:03,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:04:03,619 INFO L93 Difference]: Finished difference Result 82292 states and 130116 transitions. [2021-11-05 16:04:03,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 16:04:03,620 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 93 [2021-11-05 16:04:03,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:04:03,761 INFO L225 Difference]: With dead ends: 82292 [2021-11-05 16:04:03,761 INFO L226 Difference]: Without dead ends: 42591 [2021-11-05 16:04:03,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 81.84ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-05 16:04:03,871 INFO L933 BasicCegarLoop]: 1149 mSDtfsCounter, 348 mSDsluCounter, 2989 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 55 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4019.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 4138 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.43ms SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4334.73ms IncrementalHoareTripleChecker+Time [2021-11-05 16:04:03,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [348 Valid, 4138 Invalid, 828 Unknown, 0 Unchecked, 10.43ms Time], IncrementalHoareTripleChecker [55 Valid, 772 Invalid, 1 Unknown, 0 Unchecked, 4334.73ms Time] [2021-11-05 16:04:03,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42591 states. [2021-11-05 16:04:05,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42591 to 39783. [2021-11-05 16:04:05,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39783 states, 36670 states have (on average 1.3389964548677393) internal successors, (49101), 36871 states have internal predecessors, (49101), 1380 states have call successors, (1380), 720 states have call predecessors, (1380), 1728 states have return successors, (8408), 2251 states have call predecessors, (8408), 1380 states have call successors, (8408) [2021-11-05 16:04:05,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39783 states to 39783 states and 58889 transitions. [2021-11-05 16:04:05,491 INFO L78 Accepts]: Start accepts. Automaton has 39783 states and 58889 transitions. Word has length 93 [2021-11-05 16:04:05,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:04:05,491 INFO L470 AbstractCegarLoop]: Abstraction has 39783 states and 58889 transitions. [2021-11-05 16:04:05,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:04:05,492 INFO L276 IsEmpty]: Start isEmpty. Operand 39783 states and 58889 transitions. [2021-11-05 16:04:05,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-05 16:04:05,493 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:04:05,493 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-05 16:04:05,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-05 16:04:05,493 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [usbtouch_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 16:04:05,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:04:05,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1669527108, now seen corresponding path program 1 times [2021-11-05 16:04:05,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:04:05,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196958164] [2021-11-05 16:04:05,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:04:05,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:04:05,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:04:05,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-05 16:04:05,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:04:05,853 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 16:04:05,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:04:05,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196958164] [2021-11-05 16:04:05,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196958164] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:04:05,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:04:05,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 16:04:05,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481993477] [2021-11-05 16:04:05,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:04:05,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 16:04:05,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:04:05,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 16:04:05,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-05 16:04:05,855 INFO L87 Difference]: Start difference. First operand 39783 states and 58889 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:04:07,896 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:04:14,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:04:14,043 INFO L93 Difference]: Finished difference Result 116225 states and 191988 transitions. [2021-11-05 16:04:14,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-05 16:04:14,044 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96 [2021-11-05 16:04:14,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:04:14,576 INFO L225 Difference]: With dead ends: 116225 [2021-11-05 16:04:14,576 INFO L226 Difference]: Without dead ends: 76452 [2021-11-05 16:04:14,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 243.19ms TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-11-05 16:04:14,731 INFO L933 BasicCegarLoop]: 1192 mSDtfsCounter, 2109 mSDsluCounter, 7000 mSDsCounter, 0 mSdLazyCounter, 1347 mSolverCounterSat, 149 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4503.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2117 SdHoareTripleChecker+Valid, 8192 SdHoareTripleChecker+Invalid, 1497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.72ms SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1347 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4888.62ms IncrementalHoareTripleChecker+Time [2021-11-05 16:04:14,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2117 Valid, 8192 Invalid, 1497 Unknown, 0 Unchecked, 19.72ms Time], IncrementalHoareTripleChecker [149 Valid, 1347 Invalid, 1 Unknown, 0 Unchecked, 4888.62ms Time] [2021-11-05 16:04:14,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76452 states. [2021-11-05 16:04:16,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76452 to 40305. [2021-11-05 16:04:16,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40305 states, 37192 states have (on average 1.3352064960206496) internal successors, (49659), 37393 states have internal predecessors, (49659), 1380 states have call successors, (1380), 720 states have call predecessors, (1380), 1728 states have return successors, (8408), 2251 states have call predecessors, (8408), 1380 states have call successors, (8408) [2021-11-05 16:04:17,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40305 states to 40305 states and 59447 transitions. [2021-11-05 16:04:17,145 INFO L78 Accepts]: Start accepts. Automaton has 40305 states and 59447 transitions. Word has length 96 [2021-11-05 16:04:17,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:04:17,145 INFO L470 AbstractCegarLoop]: Abstraction has 40305 states and 59447 transitions. [2021-11-05 16:04:17,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:04:17,146 INFO L276 IsEmpty]: Start isEmpty. Operand 40305 states and 59447 transitions. [2021-11-05 16:04:17,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-05 16:04:17,147 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:04:17,147 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-05 16:04:17,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-05 16:04:17,147 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [usbtouch_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 16:04:17,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:04:17,148 INFO L85 PathProgramCache]: Analyzing trace with hash -108519448, now seen corresponding path program 1 times [2021-11-05 16:04:17,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:04:17,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966715004] [2021-11-05 16:04:17,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:04:17,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:04:17,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:04:17,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-05 16:04:17,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:04:17,448 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 16:04:17,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:04:17,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966715004] [2021-11-05 16:04:17,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966715004] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:04:17,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:04:17,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 16:04:17,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326312809] [2021-11-05 16:04:17,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:04:17,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 16:04:17,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:04:17,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 16:04:17,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-05 16:04:17,449 INFO L87 Difference]: Start difference. First operand 40305 states and 59447 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:04:19,489 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:04:25,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:04:25,284 INFO L93 Difference]: Finished difference Result 98519 states and 159096 transitions. [2021-11-05 16:04:25,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-05 16:04:25,286 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 98 [2021-11-05 16:04:25,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:04:25,531 INFO L225 Difference]: With dead ends: 98519 [2021-11-05 16:04:25,531 INFO L226 Difference]: Without dead ends: 58224 [2021-11-05 16:04:25,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 194.66ms TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2021-11-05 16:04:25,822 INFO L933 BasicCegarLoop]: 1320 mSDtfsCounter, 1004 mSDsluCounter, 8364 mSDsCounter, 0 mSdLazyCounter, 1559 mSolverCounterSat, 101 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4529.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 9684 SdHoareTripleChecker+Invalid, 1661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.38ms SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1559 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4935.96ms IncrementalHoareTripleChecker+Time [2021-11-05 16:04:25,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1011 Valid, 9684 Invalid, 1661 Unknown, 0 Unchecked, 22.38ms Time], IncrementalHoareTripleChecker [101 Valid, 1559 Invalid, 1 Unknown, 0 Unchecked, 4935.96ms Time] [2021-11-05 16:04:25,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58224 states. [2021-11-05 16:04:27,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58224 to 40305. [2021-11-05 16:04:27,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40305 states, 37192 states have (on average 1.3352064960206496) internal successors, (49659), 37393 states have internal predecessors, (49659), 1380 states have call successors, (1380), 720 states have call predecessors, (1380), 1728 states have return successors, (8408), 2251 states have call predecessors, (8408), 1380 states have call successors, (8408) [2021-11-05 16:04:27,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40305 states to 40305 states and 59447 transitions. [2021-11-05 16:04:27,812 INFO L78 Accepts]: Start accepts. Automaton has 40305 states and 59447 transitions. Word has length 98 [2021-11-05 16:04:27,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:04:27,813 INFO L470 AbstractCegarLoop]: Abstraction has 40305 states and 59447 transitions. [2021-11-05 16:04:27,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:04:27,813 INFO L276 IsEmpty]: Start isEmpty. Operand 40305 states and 59447 transitions. [2021-11-05 16:04:27,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-05 16:04:27,814 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:04:27,815 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-05 16:04:27,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-05 16:04:27,815 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [usbtouch_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 16:04:27,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:04:27,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1129567428, now seen corresponding path program 1 times [2021-11-05 16:04:27,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:04:27,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422374028] [2021-11-05 16:04:27,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:04:27,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:04:27,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:04:28,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-05 16:04:28,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:04:28,075 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 16:04:28,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:04:28,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422374028] [2021-11-05 16:04:28,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422374028] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:04:28,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:04:28,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 16:04:28,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137111184] [2021-11-05 16:04:28,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:04:28,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 16:04:28,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:04:28,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 16:04:28,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:04:28,079 INFO L87 Difference]: Start difference. First operand 40305 states and 59447 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:04:30,120 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:04:34,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:04:34,455 INFO L93 Difference]: Finished difference Result 88685 states and 140520 transitions. [2021-11-05 16:04:34,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 16:04:34,456 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2021-11-05 16:04:34,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:04:34,657 INFO L225 Difference]: With dead ends: 88685 [2021-11-05 16:04:34,671 INFO L226 Difference]: Without dead ends: 48390 [2021-11-05 16:04:34,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.49ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-05 16:04:34,831 INFO L933 BasicCegarLoop]: 1161 mSDtfsCounter, 587 mSDsluCounter, 2976 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 75 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3685.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 4137 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.14ms SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3951.65ms IncrementalHoareTripleChecker+Time [2021-11-05 16:04:34,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [587 Valid, 4137 Invalid, 882 Unknown, 0 Unchecked, 9.14ms Time], IncrementalHoareTripleChecker [75 Valid, 806 Invalid, 1 Unknown, 0 Unchecked, 3951.65ms Time] [2021-11-05 16:04:34,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48390 states. [2021-11-05 16:04:36,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48390 to 40665. [2021-11-05 16:04:36,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40665 states, 37552 states have (on average 1.3342298679164892) internal successors, (50103), 37753 states have internal predecessors, (50103), 1380 states have call successors, (1380), 720 states have call predecessors, (1380), 1728 states have return successors, (8408), 2251 states have call predecessors, (8408), 1380 states have call successors, (8408) [2021-11-05 16:04:36,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40665 states to 40665 states and 59891 transitions. [2021-11-05 16:04:36,942 INFO L78 Accepts]: Start accepts. Automaton has 40665 states and 59891 transitions. Word has length 100 [2021-11-05 16:04:36,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:04:36,942 INFO L470 AbstractCegarLoop]: Abstraction has 40665 states and 59891 transitions. [2021-11-05 16:04:36,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:04:36,943 INFO L276 IsEmpty]: Start isEmpty. Operand 40665 states and 59891 transitions. [2021-11-05 16:04:36,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-05 16:04:36,946 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:04:36,946 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-05 16:04:36,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-05 16:04:36,946 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [usbtouch_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 16:04:36,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:04:36,947 INFO L85 PathProgramCache]: Analyzing trace with hash -2139744504, now seen corresponding path program 1 times [2021-11-05 16:04:36,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:04:36,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479601842] [2021-11-05 16:04:36,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:04:36,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:04:37,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:04:37,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-05 16:04:37,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:04:37,214 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 16:04:37,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:04:37,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479601842] [2021-11-05 16:04:37,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479601842] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:04:37,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:04:37,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 16:04:37,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901232977] [2021-11-05 16:04:37,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:04:37,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 16:04:37,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:04:37,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 16:04:37,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 16:04:37,217 INFO L87 Difference]: Start difference. First operand 40665 states and 59891 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:04:39,268 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:04:44,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:04:44,014 INFO L93 Difference]: Finished difference Result 88907 states and 140796 transitions. [2021-11-05 16:04:44,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 16:04:44,015 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-11-05 16:04:44,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:04:44,223 INFO L225 Difference]: With dead ends: 88907 [2021-11-05 16:04:44,224 INFO L226 Difference]: Without dead ends: 48252 [2021-11-05 16:04:44,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 92.70ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-05 16:04:44,408 INFO L933 BasicCegarLoop]: 1158 mSDtfsCounter, 478 mSDsluCounter, 4142 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 65 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3887.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 5300 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.40ms SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4205.02ms IncrementalHoareTripleChecker+Time [2021-11-05 16:04:44,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [484 Valid, 5300 Invalid, 1022 Unknown, 0 Unchecked, 11.40ms Time], IncrementalHoareTripleChecker [65 Valid, 956 Invalid, 1 Unknown, 0 Unchecked, 4205.02ms Time] [2021-11-05 16:04:44,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48252 states. [2021-11-05 16:04:46,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48252 to 40719. [2021-11-05 16:04:46,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40719 states, 37606 states have (on average 1.3332712864968357) internal successors, (50139), 37807 states have internal predecessors, (50139), 1380 states have call successors, (1380), 720 states have call predecessors, (1380), 1728 states have return successors, (8408), 2251 states have call predecessors, (8408), 1380 states have call successors, (8408) [2021-11-05 16:04:46,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40719 states to 40719 states and 59927 transitions. [2021-11-05 16:04:46,481 INFO L78 Accepts]: Start accepts. Automaton has 40719 states and 59927 transitions. Word has length 102 [2021-11-05 16:04:46,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:04:46,482 INFO L470 AbstractCegarLoop]: Abstraction has 40719 states and 59927 transitions. [2021-11-05 16:04:46,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:04:46,482 INFO L276 IsEmpty]: Start isEmpty. Operand 40719 states and 59927 transitions. [2021-11-05 16:04:46,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-05 16:04:46,483 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:04:46,483 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-05 16:04:46,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-05 16:04:46,483 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [usbtouch_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 16:04:46,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:04:46,484 INFO L85 PathProgramCache]: Analyzing trace with hash 633856812, now seen corresponding path program 1 times [2021-11-05 16:04:46,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:04:46,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871391457] [2021-11-05 16:04:46,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:04:46,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:04:46,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:04:46,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-05 16:04:46,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:04:46,716 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-05 16:04:46,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:04:46,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871391457] [2021-11-05 16:04:46,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871391457] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:04:46,717 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:04:46,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 16:04:46,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515590200] [2021-11-05 16:04:46,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:04:46,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:04:46,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:04:46,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:04:46,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:04:46,718 INFO L87 Difference]: Start difference. First operand 40719 states and 59927 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:04:48,758 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []