./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 e19ca921 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 0.2.2-dev-e19ca92 [2021-12-22 14:34:48,368 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 14:34:48,371 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 14:34:48,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 14:34:48,423 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 14:34:48,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 14:34:48,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 14:34:48,431 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 14:34:48,433 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 14:34:48,439 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 14:34:48,440 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 14:34:48,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 14:34:48,443 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 14:34:48,445 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 14:34:48,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 14:34:48,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 14:34:48,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 14:34:48,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 14:34:48,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 14:34:48,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 14:34:48,461 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 14:34:48,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 14:34:48,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 14:34:48,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 14:34:48,468 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 14:34:48,469 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 14:34:48,469 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 14:34:48,471 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 14:34:48,471 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 14:34:48,472 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 14:34:48,472 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 14:34:48,473 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 14:34:48,475 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 14:34:48,476 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 14:34:48,477 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 14:34:48,477 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 14:34:48,478 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 14:34:48,478 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 14:34:48,478 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 14:34:48,479 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 14:34:48,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 14:34:48,481 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 14:34:48,513 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 14:34:48,514 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 14:34:48,514 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 14:34:48,514 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 14:34:48,515 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 14:34:48,515 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 14:34:48,516 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 14:34:48,516 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 14:34:48,516 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 14:34:48,517 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 14:34:48,517 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 14:34:48,518 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 14:34:48,518 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 14:34:48,518 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 14:34:48,518 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 14:34:48,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 14:34:48,519 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 14:34:48,519 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 14:34:48,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 14:34:48,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 14:34:48,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 14:34:48,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:34:48,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 14:34:48,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 14:34:48,520 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 14:34:48,520 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 14:34:48,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 14:34:48,521 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 14:34:48,521 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 14:34:48,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 14:34:48,521 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 14:34:48,522 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c13092b5fe0ffbf7fbf1fe31d493be6a68ca2455b811b10fd7983ff470e432f [2021-12-22 14:34:48,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 14:34:48,784 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 14:34:48,787 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 14:34:48,788 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 14:34:48,789 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 14:34:48,790 INFO L432 ainManager$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 [2021-12-22 14:34:48,864 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02d21ce38/311904d976de414ba9a2981a50abe490/FLAGe6575b2d4 [2021-12-22 14:34:49,573 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 14:34:49,574 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 [2021-12-22 14:34:49,610 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02d21ce38/311904d976de414ba9a2981a50abe490/FLAGe6575b2d4 [2021-12-22 14:34:49,678 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02d21ce38/311904d976de414ba9a2981a50abe490 [2021-12-22 14:34:49,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 14:34:49,682 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 14:34:49,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 14:34:49,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 14:34:49,687 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 14:34:49,688 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:34:49" (1/1) ... [2021-12-22 14:34:49,689 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54864270 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:34:49, skipping insertion in model container [2021-12-22 14:34:49,689 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:34:49" (1/1) ... [2021-12-22 14:34:49,694 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 14:34:49,789 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 14:34:50,433 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--touchscreen--usbtouchscreen.ko-entry_point.cil.out.i[108030,108043] [2021-12-22 14:34:50,831 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:34:50,871 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 14:34:50,992 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--touchscreen--usbtouchscreen.ko-entry_point.cil.out.i[108030,108043] [2021-12-22 14:34:51,201 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:34:51,318 INFO L208 MainTranslator]: Completed translation [2021-12-22 14:34:51,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:34:51 WrapperNode [2021-12-22 14:34:51,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 14:34:51,321 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 14:34:51,321 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 14:34:51,321 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 14:34:51,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:34:51" (1/1) ... [2021-12-22 14:34:51,410 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:34:51" (1/1) ... [2021-12-22 14:34:51,566 INFO L137 Inliner]: procedures = 178, calls = 1867, calls flagged for inlining = 81, calls inlined = 81, statements flattened = 3540 [2021-12-22 14:34:51,567 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 14:34:51,568 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 14:34:51,568 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 14:34:51,568 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 14:34:51,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:34:51" (1/1) ... [2021-12-22 14:34:51,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:34:51" (1/1) ... [2021-12-22 14:34:51,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:34:51" (1/1) ... [2021-12-22 14:34:51,608 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:34:51" (1/1) ... [2021-12-22 14:34:51,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:34:51" (1/1) ... [2021-12-22 14:34:51,720 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:34:51" (1/1) ... [2021-12-22 14:34:51,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:34:51" (1/1) ... [2021-12-22 14:34:51,769 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 14:34:51,771 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 14:34:51,771 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 14:34:51,772 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 14:34:51,773 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:34:51" (1/1) ... [2021-12-22 14:34:51,781 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:34:51,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:34:51,809 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) [2021-12-22 14:34:51,820 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 [2021-12-22 14:34:51,856 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2021-12-22 14:34:51,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2021-12-22 14:34:51,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-22 14:34:51,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_3 [2021-12-22 14:34:51,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_3 [2021-12-22 14:34:51,857 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_8 [2021-12-22 14:34:51,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_8 [2021-12-22 14:34:51,857 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_5 [2021-12-22 14:34:51,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_5 [2021-12-22 14:34:51,857 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_6 [2021-12-22 14:34:51,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_6 [2021-12-22 14:34:51,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-22 14:34:51,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-22 14:34:51,858 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2021-12-22 14:34:51,858 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2021-12-22 14:34:51,858 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-22 14:34:51,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-22 14:34:51,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 14:34:51,858 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_20 [2021-12-22 14:34:51,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_20 [2021-12-22 14:34:51,859 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-12-22 14:34:51,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-12-22 14:34:51,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-22 14:34:51,859 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-22 14:34:51,859 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-22 14:34:51,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-22 14:34:51,860 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-22 14:34:51,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-22 14:34:51,860 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2021-12-22 14:34:51,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2021-12-22 14:34:51,860 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-22 14:34:51,883 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-22 14:34:51,883 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2021-12-22 14:34:51,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2021-12-22 14:34:51,884 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-22 14:34:51,884 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-22 14:34:51,884 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_resume [2021-12-22 14:34:51,885 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_resume [2021-12-22 14:34:51,885 INFO L130 BoogieDeclarations]: Found specification of procedure kstrdup [2021-12-22 14:34:51,885 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrdup [2021-12-22 14:34:51,885 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2021-12-22 14:34:51,886 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2021-12-22 14:34:51,886 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_reset_resume [2021-12-22 14:34:51,886 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_reset_resume [2021-12-22 14:34:51,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 14:34:51,886 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-22 14:34:51,887 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-22 14:34:51,887 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-22 14:34:51,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-22 14:34:51,887 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2021-12-22 14:34:51,887 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2021-12-22 14:34:51,887 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-22 14:34:51,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-22 14:34:51,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-22 14:34:51,888 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-22 14:34:51,888 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-22 14:34:51,888 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-22 14:34:51,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 14:34:51,890 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2021-12-22 14:34:51,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2021-12-22 14:34:51,890 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_free_buffers [2021-12-22 14:34:51,890 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_free_buffers [2021-12-22 14:34:51,890 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_disconnect [2021-12-22 14:34:51,891 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_disconnect [2021-12-22 14:34:51,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_22 [2021-12-22 14:34:51,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_22 [2021-12-22 14:34:51,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 14:34:51,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-22 14:34:51,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-22 14:34:51,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 14:34:51,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 14:34:51,892 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2021-12-22 14:34:51,892 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2021-12-22 14:34:51,893 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2021-12-22 14:34:51,893 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2021-12-22 14:34:51,893 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-22 14:34:51,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-22 14:34:51,893 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-22 14:34:51,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-22 14:34:51,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 14:34:51,894 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-12-22 14:34:51,894 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-12-22 14:34:51,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_14 [2021-12-22 14:34:51,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_14 [2021-12-22 14:34:51,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_16 [2021-12-22 14:34:51,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_16 [2021-12-22 14:34:51,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2021-12-22 14:34:51,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2021-12-22 14:34:51,895 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_probe [2021-12-22 14:34:51,895 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_probe [2021-12-22 14:34:51,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 14:34:51,896 INFO L130 BoogieDeclarations]: Found specification of procedure input_get_drvdata [2021-12-22 14:34:51,896 INFO L138 BoogieDeclarations]: Found implementation of procedure input_get_drvdata [2021-12-22 14:34:51,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 14:34:51,896 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2021-12-22 14:34:51,896 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2021-12-22 14:34:51,897 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_open [2021-12-22 14:34:51,897 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_open [2021-12-22 14:34:51,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_12 [2021-12-22 14:34:51,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_12 [2021-12-22 14:34:51,898 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-22 14:34:51,898 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-22 14:34:51,898 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-22 14:34:51,898 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-22 14:34:51,898 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-22 14:34:51,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-22 14:34:51,899 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_irq [2021-12-22 14:34:51,899 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_irq [2021-12-22 14:34:51,899 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-22 14:34:51,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-22 14:34:51,899 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_process_pkt [2021-12-22 14:34:51,899 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_process_pkt [2021-12-22 14:34:51,899 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-22 14:34:51,899 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-22 14:34:51,900 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2021-12-22 14:34:51,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2021-12-22 14:34:51,900 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2021-12-22 14:34:51,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2021-12-22 14:34:51,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 14:34:51,900 INFO L130 BoogieDeclarations]: Found specification of procedure nexio_read_data [2021-12-22 14:34:51,901 INFO L138 BoogieDeclarations]: Found implementation of procedure nexio_read_data [2021-12-22 14:34:51,901 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2021-12-22 14:34:51,901 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2021-12-22 14:34:51,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-22 14:34:51,903 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-22 14:34:51,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-22 14:34:51,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 14:34:51,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 14:34:51,909 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2021-12-22 14:34:51,909 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2021-12-22 14:34:51,909 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_process_multi [2021-12-22 14:34:51,909 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_process_multi [2021-12-22 14:34:52,516 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 14:34:52,520 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 14:34:52,831 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-22 14:34:54,624 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2021-12-22 14:34:55,368 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 14:34:55,388 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 14:34:55,388 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-22 14:34:55,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:34:55 BoogieIcfgContainer [2021-12-22 14:34:55,392 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 14:34:55,393 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 14:34:55,394 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 14:34:55,397 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 14:34:55,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:34:49" (1/3) ... [2021-12-22 14:34:55,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a212182 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:34:55, skipping insertion in model container [2021-12-22 14:34:55,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:34:51" (2/3) ... [2021-12-22 14:34:55,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a212182 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:34:55, skipping insertion in model container [2021-12-22 14:34:55,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:34:55" (3/3) ... [2021-12-22 14:34:55,400 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--input--touchscreen--usbtouchscreen.ko-entry_point.cil.out.i [2021-12-22 14:34:55,405 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 14:34:55,405 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 14:34:55,463 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 14:34:55,470 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 [2021-12-22 14:34:55,471 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 14:34:55,519 INFO L276 IsEmpty]: Start isEmpty. Operand has 959 states, 694 states have (on average 1.3530259365994237) internal successors, (939), 713 states have internal predecessors, (939), 207 states have call successors, (207), 58 states have call predecessors, (207), 56 states have return successors, (201), 199 states have call predecessors, (201), 201 states have call successors, (201) [2021-12-22 14:34:55,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-22 14:34:55,526 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:34:55,527 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] [2021-12-22 14:34:55,528 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:34:55,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:34:55,533 INFO L85 PathProgramCache]: Analyzing trace with hash -528872520, now seen corresponding path program 1 times [2021-12-22 14:34:55,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:34:55,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433716069] [2021-12-22 14:34:55,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:34:55,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:34:55,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:56,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:34:56,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:56,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 14:34:56,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:34:56,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:34:56,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:34:56,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433716069] [2021-12-22 14:34:56,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433716069] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:34:56,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:34:56,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 14:34:56,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251251312] [2021-12-22 14:34:56,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:34:56,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 14:34:56,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:34:56,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 14:34:56,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:34:56,145 INFO L87 Difference]: Start difference. First operand has 959 states, 694 states have (on average 1.3530259365994237) internal successors, (939), 713 states have internal predecessors, (939), 207 states have call successors, (207), 58 states have call predecessors, (207), 56 states have return successors, (201), 199 states have call predecessors, (201), 201 states have call successors, (201) Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 14:35:03,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:35:03,739 INFO L93 Difference]: Finished difference Result 3538 states and 5257 transitions. [2021-12-22 14:35:03,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 14:35:03,741 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2021-12-22 14:35:03,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:35:03,785 INFO L225 Difference]: With dead ends: 3538 [2021-12-22 14:35:03,785 INFO L226 Difference]: Without dead ends: 2560 [2021-12-22 14:35:03,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-22 14:35:03,813 INFO L933 BasicCegarLoop]: 1525 mSDtfsCounter, 3109 mSDsluCounter, 2269 mSDsCounter, 0 mSdLazyCounter, 2158 mSolverCounterSat, 1583 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3288 SdHoareTripleChecker+Valid, 3794 SdHoareTripleChecker+Invalid, 3741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1583 IncrementalHoareTripleChecker+Valid, 2158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-12-22 14:35:03,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3288 Valid, 3794 Invalid, 3741 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1583 Valid, 2158 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2021-12-22 14:35:03,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2560 states. [2021-12-22 14:35:04,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2560 to 1859. [2021-12-22 14:35:04,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1859 states, 1355 states have (on average 1.3424354243542436) internal successors, (1819), 1372 states have internal predecessors, (1819), 393 states have call successors, (393), 111 states have call predecessors, (393), 110 states have return successors, (387), 383 states have call predecessors, (387), 387 states have call successors, (387) [2021-12-22 14:35:04,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1859 states to 1859 states and 2599 transitions. [2021-12-22 14:35:04,021 INFO L78 Accepts]: Start accepts. Automaton has 1859 states and 2599 transitions. Word has length 28 [2021-12-22 14:35:04,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:35:04,022 INFO L470 AbstractCegarLoop]: Abstraction has 1859 states and 2599 transitions. [2021-12-22 14:35:04,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 14:35:04,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1859 states and 2599 transitions. [2021-12-22 14:35:04,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-22 14:35:04,027 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:35:04,027 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:35:04,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 14:35:04,028 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:35:04,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:35:04,029 INFO L85 PathProgramCache]: Analyzing trace with hash -118423946, now seen corresponding path program 1 times [2021-12-22 14:35:04,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:35:04,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117224480] [2021-12-22 14:35:04,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:35:04,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:35:04,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:04,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:35:04,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:04,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 14:35:04,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:04,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 14:35:04,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:04,208 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-22 14:35:04,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:35:04,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117224480] [2021-12-22 14:35:04,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117224480] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:35:04,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:35:04,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 14:35:04,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955302973] [2021-12-22 14:35:04,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:35:04,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 14:35:04,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:35:04,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 14:35:04,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:35:04,212 INFO L87 Difference]: Start difference. First operand 1859 states and 2599 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-22 14:35:08,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:35:08,083 INFO L93 Difference]: Finished difference Result 2583 states and 3724 transitions. [2021-12-22 14:35:08,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 14:35:08,084 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2021-12-22 14:35:08,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:35:08,101 INFO L225 Difference]: With dead ends: 2583 [2021-12-22 14:35:08,101 INFO L226 Difference]: Without dead ends: 2570 [2021-12-22 14:35:08,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-22 14:35:08,105 INFO L933 BasicCegarLoop]: 1218 mSDtfsCounter, 2207 mSDsluCounter, 1043 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 1003 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2330 SdHoareTripleChecker+Valid, 2261 SdHoareTripleChecker+Invalid, 2096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1003 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-12-22 14:35:08,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2330 Valid, 2261 Invalid, 2096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1003 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-12-22 14:35:08,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2570 states. [2021-12-22 14:35:08,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2570 to 1859. [2021-12-22 14:35:08,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1859 states, 1355 states have (on average 1.3416974169741698) internal successors, (1818), 1372 states have internal predecessors, (1818), 393 states have call successors, (393), 111 states have call predecessors, (393), 110 states have return successors, (387), 383 states have call predecessors, (387), 387 states have call successors, (387) [2021-12-22 14:35:08,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1859 states to 1859 states and 2598 transitions. [2021-12-22 14:35:08,207 INFO L78 Accepts]: Start accepts. Automaton has 1859 states and 2598 transitions. Word has length 38 [2021-12-22 14:35:08,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:35:08,208 INFO L470 AbstractCegarLoop]: Abstraction has 1859 states and 2598 transitions. [2021-12-22 14:35:08,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-22 14:35:08,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1859 states and 2598 transitions. [2021-12-22 14:35:08,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-22 14:35:08,215 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:35:08,216 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:35:08,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 14:35:08,217 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:35:08,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:35:08,217 INFO L85 PathProgramCache]: Analyzing trace with hash -61165644, now seen corresponding path program 1 times [2021-12-22 14:35:08,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:35:08,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615078285] [2021-12-22 14:35:08,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:35:08,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:35:08,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:08,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:35:08,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:08,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 14:35:08,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:08,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 14:35:08,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:08,513 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-22 14:35:08,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:35:08,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615078285] [2021-12-22 14:35:08,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615078285] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:35:08,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:35:08,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 14:35:08,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915164887] [2021-12-22 14:35:08,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:35:08,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 14:35:08,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:35:08,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 14:35:08,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:35:08,517 INFO L87 Difference]: Start difference. First operand 1859 states and 2598 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-22 14:35:15,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:35:15,651 INFO L93 Difference]: Finished difference Result 6942 states and 10376 transitions. [2021-12-22 14:35:15,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 14:35:15,652 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2021-12-22 14:35:15,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:35:15,690 INFO L225 Difference]: With dead ends: 6942 [2021-12-22 14:35:15,690 INFO L226 Difference]: Without dead ends: 5097 [2021-12-22 14:35:15,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-22 14:35:15,712 INFO L933 BasicCegarLoop]: 1465 mSDtfsCounter, 3250 mSDsluCounter, 2193 mSDsCounter, 0 mSdLazyCounter, 2191 mSolverCounterSat, 1635 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3411 SdHoareTripleChecker+Valid, 3658 SdHoareTripleChecker+Invalid, 3826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1635 IncrementalHoareTripleChecker+Valid, 2191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-12-22 14:35:15,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3411 Valid, 3658 Invalid, 3826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1635 Valid, 2191 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2021-12-22 14:35:15,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5097 states. [2021-12-22 14:35:15,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5097 to 4246. [2021-12-22 14:35:15,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4246 states, 3099 states have (on average 1.3262342691190707) internal successors, (4110), 3132 states have internal predecessors, (4110), 851 states have call successors, (851), 220 states have call predecessors, (851), 295 states have return successors, (1211), 909 states have call predecessors, (1211), 845 states have call successors, (1211) [2021-12-22 14:35:15,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4246 states to 4246 states and 6172 transitions. [2021-12-22 14:35:15,973 INFO L78 Accepts]: Start accepts. Automaton has 4246 states and 6172 transitions. Word has length 38 [2021-12-22 14:35:15,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:35:15,974 INFO L470 AbstractCegarLoop]: Abstraction has 4246 states and 6172 transitions. [2021-12-22 14:35:15,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-22 14:35:15,974 INFO L276 IsEmpty]: Start isEmpty. Operand 4246 states and 6172 transitions. [2021-12-22 14:35:15,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-22 14:35:15,977 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:35:15,978 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:35:15,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 14:35:15,978 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:35:15,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:35:15,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1896633318, now seen corresponding path program 1 times [2021-12-22 14:35:15,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:35:15,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853760627] [2021-12-22 14:35:15,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:35:15,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:35:16,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:16,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:35:16,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:16,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 14:35:16,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:16,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 14:35:16,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:16,249 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-22 14:35:16,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:35:16,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853760627] [2021-12-22 14:35:16,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853760627] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:35:16,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:35:16,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 14:35:16,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016020321] [2021-12-22 14:35:16,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:35:16,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 14:35:16,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:35:16,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 14:35:16,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:35:16,253 INFO L87 Difference]: Start difference. First operand 4246 states and 6172 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-22 14:35:20,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:35:20,563 INFO L93 Difference]: Finished difference Result 5088 states and 7602 transitions. [2021-12-22 14:35:20,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:35:20,564 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2021-12-22 14:35:20,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:35:20,593 INFO L225 Difference]: With dead ends: 5088 [2021-12-22 14:35:20,593 INFO L226 Difference]: Without dead ends: 5085 [2021-12-22 14:35:20,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:35:20,598 INFO L933 BasicCegarLoop]: 1179 mSDtfsCounter, 2220 mSDsluCounter, 974 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 1000 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2344 SdHoareTripleChecker+Valid, 2153 SdHoareTripleChecker+Invalid, 2071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1000 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-12-22 14:35:20,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2344 Valid, 2153 Invalid, 2071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1000 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-12-22 14:35:20,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5085 states. [2021-12-22 14:35:20,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5085 to 4245. [2021-12-22 14:35:20,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4245 states, 3099 states have (on average 1.3259115843820588) internal successors, (4109), 3131 states have internal predecessors, (4109), 850 states have call successors, (850), 220 states have call predecessors, (850), 295 states have return successors, (1211), 909 states have call predecessors, (1211), 845 states have call successors, (1211) [2021-12-22 14:35:20,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4245 states to 4245 states and 6170 transitions. [2021-12-22 14:35:20,829 INFO L78 Accepts]: Start accepts. Automaton has 4245 states and 6170 transitions. Word has length 39 [2021-12-22 14:35:20,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:35:20,831 INFO L470 AbstractCegarLoop]: Abstraction has 4245 states and 6170 transitions. [2021-12-22 14:35:20,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-22 14:35:20,832 INFO L276 IsEmpty]: Start isEmpty. Operand 4245 states and 6170 transitions. [2021-12-22 14:35:20,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-22 14:35:20,834 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:35:20,834 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:35:20,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 14:35:20,835 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:35:20,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:35:20,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1333415799, now seen corresponding path program 1 times [2021-12-22 14:35:20,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:35:20,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984040225] [2021-12-22 14:35:20,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:35:20,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:35:20,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:21,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:35:21,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:21,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 14:35:21,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:21,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 14:35:21,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:21,089 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-22 14:35:21,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:35:21,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984040225] [2021-12-22 14:35:21,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984040225] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:35:21,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:35:21,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 14:35:21,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211540667] [2021-12-22 14:35:21,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:35:21,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 14:35:21,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:35:21,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 14:35:21,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:35:21,094 INFO L87 Difference]: Start difference. First operand 4245 states and 6170 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-22 14:35:24,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:35:24,357 INFO L93 Difference]: Finished difference Result 5087 states and 7600 transitions. [2021-12-22 14:35:24,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:35:24,357 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2021-12-22 14:35:24,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:35:24,389 INFO L225 Difference]: With dead ends: 5087 [2021-12-22 14:35:24,389 INFO L226 Difference]: Without dead ends: 5084 [2021-12-22 14:35:24,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:35:24,397 INFO L933 BasicCegarLoop]: 1179 mSDtfsCounter, 2221 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 1005 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2347 SdHoareTripleChecker+Valid, 2148 SdHoareTripleChecker+Invalid, 2076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1005 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-22 14:35:24,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2347 Valid, 2148 Invalid, 2076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1005 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-22 14:35:24,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5084 states. [2021-12-22 14:35:24,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5084 to 4244. [2021-12-22 14:35:24,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4244 states, 3099 states have (on average 1.325588899645047) internal successors, (4108), 3130 states have internal predecessors, (4108), 849 states have call successors, (849), 220 states have call predecessors, (849), 295 states have return successors, (1211), 909 states have call predecessors, (1211), 845 states have call successors, (1211) [2021-12-22 14:35:24,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4244 states to 4244 states and 6168 transitions. [2021-12-22 14:35:24,673 INFO L78 Accepts]: Start accepts. Automaton has 4244 states and 6168 transitions. Word has length 40 [2021-12-22 14:35:24,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:35:24,674 INFO L470 AbstractCegarLoop]: Abstraction has 4244 states and 6168 transitions. [2021-12-22 14:35:24,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-22 14:35:24,675 INFO L276 IsEmpty]: Start isEmpty. Operand 4244 states and 6168 transitions. [2021-12-22 14:35:24,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-22 14:35:24,677 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:35:24,677 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:35:24,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 14:35:24,677 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:35:24,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:35:24,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1614271811, now seen corresponding path program 1 times [2021-12-22 14:35:24,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:35:24,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345790944] [2021-12-22 14:35:24,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:35:24,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:35:24,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:24,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:35:24,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:24,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 14:35:24,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:24,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 14:35:24,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:24,876 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-22 14:35:24,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:35:24,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345790944] [2021-12-22 14:35:24,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345790944] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:35:24,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:35:24,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 14:35:24,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576050371] [2021-12-22 14:35:24,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:35:24,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 14:35:24,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:35:24,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 14:35:24,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:35:24,882 INFO L87 Difference]: Start difference. First operand 4244 states and 6168 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-22 14:35:30,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:35:30,784 INFO L93 Difference]: Finished difference Result 14347 states and 21990 transitions. [2021-12-22 14:35:30,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 14:35:30,785 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2021-12-22 14:35:30,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:35:30,842 INFO L225 Difference]: With dead ends: 14347 [2021-12-22 14:35:30,843 INFO L226 Difference]: Without dead ends: 10117 [2021-12-22 14:35:30,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-22 14:35:30,875 INFO L933 BasicCegarLoop]: 1406 mSDtfsCounter, 3099 mSDsluCounter, 2306 mSDsCounter, 0 mSdLazyCounter, 2086 mSolverCounterSat, 1593 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3262 SdHoareTripleChecker+Valid, 3712 SdHoareTripleChecker+Invalid, 3679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1593 IncrementalHoareTripleChecker+Valid, 2086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-12-22 14:35:30,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3262 Valid, 3712 Invalid, 3679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1593 Valid, 2086 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2021-12-22 14:35:30,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10117 states. [2021-12-22 14:35:31,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10117 to 8695. [2021-12-22 14:35:31,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8695 states, 6351 states have (on average 1.3254605573925367) internal successors, (8418), 6411 states have internal predecessors, (8418), 1726 states have call successors, (1726), 435 states have call predecessors, (1726), 617 states have return successors, (2913), 1880 states have call predecessors, (2913), 1719 states have call successors, (2913) [2021-12-22 14:35:31,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8695 states to 8695 states and 13057 transitions. [2021-12-22 14:35:31,395 INFO L78 Accepts]: Start accepts. Automaton has 8695 states and 13057 transitions. Word has length 41 [2021-12-22 14:35:31,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:35:31,397 INFO L470 AbstractCegarLoop]: Abstraction has 8695 states and 13057 transitions. [2021-12-22 14:35:31,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-22 14:35:31,398 INFO L276 IsEmpty]: Start isEmpty. Operand 8695 states and 13057 transitions. [2021-12-22 14:35:31,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-22 14:35:31,400 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:35:31,400 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:35:31,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 14:35:31,401 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:35:31,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:35:31,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1496697658, now seen corresponding path program 1 times [2021-12-22 14:35:31,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:35:31,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739409751] [2021-12-22 14:35:31,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:35:31,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:35:31,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:31,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:35:31,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:31,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 14:35:31,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:31,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 14:35:31,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:31,602 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-22 14:35:31,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:35:31,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739409751] [2021-12-22 14:35:31,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739409751] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:35:31,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:35:31,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 14:35:31,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543480119] [2021-12-22 14:35:31,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:35:31,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 14:35:31,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:35:31,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 14:35:31,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:35:31,606 INFO L87 Difference]: Start difference. First operand 8695 states and 13057 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-22 14:35:35,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:35:35,569 INFO L93 Difference]: Finished difference Result 10085 states and 15441 transitions. [2021-12-22 14:35:35,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:35:35,570 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2021-12-22 14:35:35,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:35:35,679 INFO L225 Difference]: With dead ends: 10085 [2021-12-22 14:35:35,679 INFO L226 Difference]: Without dead ends: 10073 [2021-12-22 14:35:35,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:35:35,686 INFO L933 BasicCegarLoop]: 1168 mSDtfsCounter, 2200 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 1073 mSolverCounterSat, 1010 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2326 SdHoareTripleChecker+Valid, 2149 SdHoareTripleChecker+Invalid, 2083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1010 IncrementalHoareTripleChecker+Valid, 1073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-12-22 14:35:35,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2326 Valid, 2149 Invalid, 2083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1010 Valid, 1073 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-12-22 14:35:35,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10073 states. [2021-12-22 14:35:36,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10073 to 8685. [2021-12-22 14:35:36,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8685 states, 6342 states have (on average 1.325291706086408) internal successors, (8405), 6401 states have internal predecessors, (8405), 1725 states have call successors, (1725), 435 states have call predecessors, (1725), 617 states have return successors, (2913), 1880 states have call predecessors, (2913), 1719 states have call successors, (2913) [2021-12-22 14:35:36,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8685 states to 8685 states and 13043 transitions. [2021-12-22 14:35:36,184 INFO L78 Accepts]: Start accepts. Automaton has 8685 states and 13043 transitions. Word has length 42 [2021-12-22 14:35:36,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:35:36,185 INFO L470 AbstractCegarLoop]: Abstraction has 8685 states and 13043 transitions. [2021-12-22 14:35:36,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-22 14:35:36,185 INFO L276 IsEmpty]: Start isEmpty. Operand 8685 states and 13043 transitions. [2021-12-22 14:35:36,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-22 14:35:36,190 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:35:36,190 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:35:36,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 14:35:36,191 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:35:36,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:35:36,191 INFO L85 PathProgramCache]: Analyzing trace with hash 729431661, now seen corresponding path program 1 times [2021-12-22 14:35:36,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:35:36,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61253619] [2021-12-22 14:35:36,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:35:36,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:35:36,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:36,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:35:36,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:36,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 14:35:36,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:36,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:35:36,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:36,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 14:35:36,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:36,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-22 14:35:36,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:36,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-22 14:35:36,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:36,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:35:36,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:36,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:35:36,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:36,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-22 14:35:36,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:36,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:35:36,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:36,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-22 14:35:36,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:36,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:35:36,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:35:36,513 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-22 14:35:36,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:35:36,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61253619] [2021-12-22 14:35:36,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61253619] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:35:36,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:35:36,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 14:35:36,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661290100] [2021-12-22 14:35:36,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:35:36,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 14:35:36,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:35:36,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 14:35:36,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-22 14:35:36,517 INFO L87 Difference]: Start difference. First operand 8685 states and 13043 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (18), 7 states have call predecessors, (18), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-22 14:35:43,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:35:43,878 INFO L93 Difference]: Finished difference Result 22395 states and 34968 transitions. [2021-12-22 14:35:43,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 14:35:43,879 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (18), 7 states have call predecessors, (18), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2021-12-22 14:35:43,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:35:43,951 INFO L225 Difference]: With dead ends: 22395 [2021-12-22 14:35:43,952 INFO L226 Difference]: Without dead ends: 13724 [2021-12-22 14:35:43,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-12-22 14:35:43,999 INFO L933 BasicCegarLoop]: 1235 mSDtfsCounter, 1877 mSDsluCounter, 3567 mSDsCounter, 0 mSdLazyCounter, 3256 mSolverCounterSat, 950 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2031 SdHoareTripleChecker+Valid, 4802 SdHoareTripleChecker+Invalid, 4206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 950 IncrementalHoareTripleChecker+Valid, 3256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-12-22 14:35:43,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2031 Valid, 4802 Invalid, 4206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [950 Valid, 3256 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2021-12-22 14:35:44,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13724 states.