./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 ae007674 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-ae00767 [2021-12-28 03:52:56,210 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:52:56,213 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:52:56,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:52:56,247 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:52:56,250 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:52:56,252 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:52:56,256 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:52:56,258 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:52:56,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:52:56,269 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:52:56,271 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:52:56,271 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:52:56,273 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:52:56,274 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:52:56,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:52:56,284 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:52:56,284 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:52:56,285 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:52:56,287 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:52:56,290 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:52:56,291 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:52:56,292 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:52:56,292 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:52:56,294 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:52:56,294 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:52:56,294 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:52:56,295 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:52:56,295 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:52:56,296 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:52:56,296 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:52:56,296 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:52:56,297 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:52:56,297 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:52:56,298 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:52:56,298 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:52:56,299 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:52:56,299 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:52:56,299 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:52:56,300 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:52:56,300 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:52:56,301 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 03:52:56,326 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:52:56,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:52:56,328 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:52:56,329 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:52:56,329 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:52:56,330 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:52:56,330 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:52:56,331 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:52:56,331 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:52:56,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:52:56,331 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:52:56,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:52:56,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:52:56,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:52:56,332 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:52:56,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:52:56,332 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:52:56,332 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:52:56,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:52:56,333 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:52:56,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:52:56,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:52:56,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:52:56,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:52:56,333 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:52:56,334 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:52:56,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:52:56,334 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:52:56,334 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:52:56,334 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:52:56,334 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c13092b5fe0ffbf7fbf1fe31d493be6a68ca2455b811b10fd7983ff470e432f [2021-12-28 03:52:56,567 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:52:56,599 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:52:56,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:52:56,602 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:52:56,603 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:52:56,604 INFO L432 ainManager$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 [2021-12-28 03:52:56,651 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ddf748d4/c634cc1123a84a598b65d3ebed0116c2/FLAG819b18aef [2021-12-28 03:52:57,259 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:52:57,260 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 [2021-12-28 03:52:57,287 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ddf748d4/c634cc1123a84a598b65d3ebed0116c2/FLAG819b18aef [2021-12-28 03:52:57,622 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ddf748d4/c634cc1123a84a598b65d3ebed0116c2 [2021-12-28 03:52:57,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:52:57,626 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:52:57,627 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:52:57,627 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:52:57,629 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:52:57,630 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:52:57" (1/1) ... [2021-12-28 03:52:57,631 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49a7f623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:52:57, skipping insertion in model container [2021-12-28 03:52:57,631 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:52:57" (1/1) ... [2021-12-28 03:52:57,636 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:52:57,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:52:58,216 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] [2021-12-28 03:52:58,644 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:52:58,698 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:52:58,766 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] [2021-12-28 03:52:58,921 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:52:59,005 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:52:59,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:52:59 WrapperNode [2021-12-28 03:52:59,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:52:59,009 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:52:59,009 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:52:59,009 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:52:59,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:52:59" (1/1) ... [2021-12-28 03:52:59,084 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:52:59" (1/1) ... [2021-12-28 03:52:59,219 INFO L137 Inliner]: procedures = 178, calls = 1867, calls flagged for inlining = 81, calls inlined = 81, statements flattened = 3540 [2021-12-28 03:52:59,219 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:52:59,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:52:59,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:52:59,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:52:59,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:52:59" (1/1) ... [2021-12-28 03:52:59,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:52:59" (1/1) ... [2021-12-28 03:52:59,280 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:52:59" (1/1) ... [2021-12-28 03:52:59,281 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:52:59" (1/1) ... [2021-12-28 03:52:59,367 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:52:59" (1/1) ... [2021-12-28 03:52:59,376 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:52:59" (1/1) ... [2021-12-28 03:52:59,396 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:52:59" (1/1) ... [2021-12-28 03:52:59,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:52:59,413 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:52:59,413 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:52:59,413 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:52:59,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:52:59" (1/1) ... [2021-12-28 03:52:59,418 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:52:59,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:52:59,483 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) [2021-12-28 03:52:59,490 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 [2021-12-28 03:52:59,551 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2021-12-28 03:52:59,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2021-12-28 03:52:59,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-28 03:52:59,552 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_3 [2021-12-28 03:52:59,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_3 [2021-12-28 03:52:59,552 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_8 [2021-12-28 03:52:59,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_8 [2021-12-28 03:52:59,552 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_5 [2021-12-28 03:52:59,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_5 [2021-12-28 03:52:59,553 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_6 [2021-12-28 03:52:59,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_6 [2021-12-28 03:52:59,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-28 03:52:59,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-28 03:52:59,553 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2021-12-28 03:52:59,553 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2021-12-28 03:52:59,553 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-28 03:52:59,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-28 03:52:59,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:52:59,553 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_20 [2021-12-28 03:52:59,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_20 [2021-12-28 03:52:59,553 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-12-28 03:52:59,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-12-28 03:52:59,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-28 03:52:59,554 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-28 03:52:59,554 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-28 03:52:59,554 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-28 03:52:59,554 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-28 03:52:59,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-28 03:52:59,554 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2021-12-28 03:52:59,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2021-12-28 03:52:59,554 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-28 03:52:59,554 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-28 03:52:59,554 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2021-12-28 03:52:59,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2021-12-28 03:52:59,554 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-28 03:52:59,555 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-28 03:52:59,555 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_resume [2021-12-28 03:52:59,555 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_resume [2021-12-28 03:52:59,555 INFO L130 BoogieDeclarations]: Found specification of procedure kstrdup [2021-12-28 03:52:59,555 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrdup [2021-12-28 03:52:59,555 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2021-12-28 03:52:59,555 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2021-12-28 03:52:59,555 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_reset_resume [2021-12-28 03:52:59,555 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_reset_resume [2021-12-28 03:52:59,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:52:59,556 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-28 03:52:59,556 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-28 03:52:59,556 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-28 03:52:59,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-28 03:52:59,556 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2021-12-28 03:52:59,556 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2021-12-28 03:52:59,556 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-28 03:52:59,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-28 03:52:59,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-28 03:52:59,568 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-28 03:52:59,568 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 03:52:59,568 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 03:52:59,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:52:59,569 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2021-12-28 03:52:59,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2021-12-28 03:52:59,570 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_free_buffers [2021-12-28 03:52:59,571 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_free_buffers [2021-12-28 03:52:59,571 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_disconnect [2021-12-28 03:52:59,571 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_disconnect [2021-12-28 03:52:59,571 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_22 [2021-12-28 03:52:59,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_22 [2021-12-28 03:52:59,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:52:59,572 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-28 03:52:59,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-28 03:52:59,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 03:52:59,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:52:59,573 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2021-12-28 03:52:59,573 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2021-12-28 03:52:59,573 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2021-12-28 03:52:59,573 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2021-12-28 03:52:59,573 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-28 03:52:59,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-28 03:52:59,573 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-28 03:52:59,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-28 03:52:59,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 03:52:59,574 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-12-28 03:52:59,576 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-12-28 03:52:59,576 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_14 [2021-12-28 03:52:59,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_14 [2021-12-28 03:52:59,576 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_16 [2021-12-28 03:52:59,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_16 [2021-12-28 03:52:59,576 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2021-12-28 03:52:59,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2021-12-28 03:52:59,576 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_probe [2021-12-28 03:52:59,576 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_probe [2021-12-28 03:52:59,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:52:59,577 INFO L130 BoogieDeclarations]: Found specification of procedure input_get_drvdata [2021-12-28 03:52:59,577 INFO L138 BoogieDeclarations]: Found implementation of procedure input_get_drvdata [2021-12-28 03:52:59,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 03:52:59,577 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2021-12-28 03:52:59,577 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2021-12-28 03:52:59,577 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_open [2021-12-28 03:52:59,577 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_open [2021-12-28 03:52:59,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_12 [2021-12-28 03:52:59,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_12 [2021-12-28 03:52:59,577 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-28 03:52:59,577 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-28 03:52:59,577 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-28 03:52:59,577 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-28 03:52:59,577 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-28 03:52:59,578 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-28 03:52:59,578 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_irq [2021-12-28 03:52:59,578 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_irq [2021-12-28 03:52:59,578 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-28 03:52:59,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-28 03:52:59,578 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_process_pkt [2021-12-28 03:52:59,578 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_process_pkt [2021-12-28 03:52:59,578 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-28 03:52:59,578 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-28 03:52:59,578 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2021-12-28 03:52:59,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2021-12-28 03:52:59,578 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2021-12-28 03:52:59,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2021-12-28 03:52:59,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:52:59,578 INFO L130 BoogieDeclarations]: Found specification of procedure nexio_read_data [2021-12-28 03:52:59,579 INFO L138 BoogieDeclarations]: Found implementation of procedure nexio_read_data [2021-12-28 03:52:59,579 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2021-12-28 03:52:59,579 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2021-12-28 03:52:59,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-28 03:52:59,579 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-28 03:52:59,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-28 03:52:59,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:52:59,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:52:59,579 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2021-12-28 03:52:59,579 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2021-12-28 03:52:59,579 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_process_multi [2021-12-28 03:52:59,579 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_process_multi [2021-12-28 03:53:00,019 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:53:00,021 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:53:00,333 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-28 03:53:01,671 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2021-12-28 03:53:02,232 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:53:02,241 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:53:02,255 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 03:53:02,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:53:02 BoogieIcfgContainer [2021-12-28 03:53:02,258 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:53:02,259 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:53:02,259 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:53:02,261 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:53:02,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:52:57" (1/3) ... [2021-12-28 03:53:02,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d399cc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:53:02, skipping insertion in model container [2021-12-28 03:53:02,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:52:59" (2/3) ... [2021-12-28 03:53:02,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d399cc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:53:02, skipping insertion in model container [2021-12-28 03:53:02,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:53:02" (3/3) ... [2021-12-28 03:53:02,263 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--input--touchscreen--usbtouchscreen.ko-entry_point.cil.out.i [2021-12-28 03:53:02,267 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:53:02,267 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:53:02,300 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:53:02,304 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 [2021-12-28 03:53:02,305 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 03:53:02,329 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) [2021-12-28 03:53:02,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-28 03:53:02,334 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:53:02,335 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] [2021-12-28 03:53:02,335 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:53:02,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:53:02,339 INFO L85 PathProgramCache]: Analyzing trace with hash -528872520, now seen corresponding path program 1 times [2021-12-28 03:53:02,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:53:02,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485278830] [2021-12-28 03:53:02,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:53:02,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:53:02,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:02,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:53:02,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:02,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 03:53:02,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:02,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:53:02,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:53:02,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485278830] [2021-12-28 03:53:02,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485278830] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:53:02,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:53:02,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:53:02,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400119821] [2021-12-28 03:53:02,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:53:02,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:53:02,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:53:02,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:53:02,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:53:02,770 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) [2021-12-28 03:53:08,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:53:08,789 INFO L93 Difference]: Finished difference Result 3538 states and 5257 transitions. [2021-12-28 03:53:08,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:53:08,791 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 [2021-12-28 03:53:08,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:53:08,822 INFO L225 Difference]: With dead ends: 3538 [2021-12-28 03:53:08,823 INFO L226 Difference]: Without dead ends: 2560 [2021-12-28 03:53:08,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:53:08,844 INFO L933 BasicCegarLoop]: 1523 mSDtfsCounter, 3079 mSDsluCounter, 2169 mSDsCounter, 0 mSdLazyCounter, 2285 mSolverCounterSat, 1567 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3262 SdHoareTripleChecker+Valid, 3692 SdHoareTripleChecker+Invalid, 3852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1567 IncrementalHoareTripleChecker+Valid, 2285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-12-28 03:53:08,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3262 Valid, 3692 Invalid, 3852 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1567 Valid, 2285 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2021-12-28 03:53:08,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2560 states. [2021-12-28 03:53:09,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2560 to 1859. [2021-12-28 03:53:09,017 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) [2021-12-28 03:53:09,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1859 states to 1859 states and 2599 transitions. [2021-12-28 03:53:09,060 INFO L78 Accepts]: Start accepts. Automaton has 1859 states and 2599 transitions. Word has length 28 [2021-12-28 03:53:09,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:53:09,061 INFO L470 AbstractCegarLoop]: Abstraction has 1859 states and 2599 transitions. [2021-12-28 03:53:09,061 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) [2021-12-28 03:53:09,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1859 states and 2599 transitions. [2021-12-28 03:53:09,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-28 03:53:09,076 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:53:09,076 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] [2021-12-28 03:53:09,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 03:53:09,076 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:53:09,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:53:09,077 INFO L85 PathProgramCache]: Analyzing trace with hash -118423946, now seen corresponding path program 1 times [2021-12-28 03:53:09,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:53:09,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167911885] [2021-12-28 03:53:09,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:53:09,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:53:09,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:09,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:53:09,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:09,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 03:53:09,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:09,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-28 03:53:09,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:09,313 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-28 03:53:09,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:53:09,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167911885] [2021-12-28 03:53:09,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167911885] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:53:09,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:53:09,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:53:09,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041110251] [2021-12-28 03:53:09,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:53:09,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:53:09,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:53:09,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:53:09,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:53:09,317 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) [2021-12-28 03:53:14,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:53:14,085 INFO L93 Difference]: Finished difference Result 2583 states and 3724 transitions. [2021-12-28 03:53:14,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:53:14,085 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 [2021-12-28 03:53:14,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:53:14,097 INFO L225 Difference]: With dead ends: 2583 [2021-12-28 03:53:14,097 INFO L226 Difference]: Without dead ends: 2570 [2021-12-28 03:53:14,100 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 [2021-12-28 03:53:14,101 INFO L933 BasicCegarLoop]: 1215 mSDtfsCounter, 2203 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 1006 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2329 SdHoareTripleChecker+Valid, 2262 SdHoareTripleChecker+Invalid, 2083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1006 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-12-28 03:53:14,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2329 Valid, 2262 Invalid, 2083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1006 Valid, 1077 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-12-28 03:53:14,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2570 states. [2021-12-28 03:53:14,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2570 to 1859. [2021-12-28 03:53:14,156 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) [2021-12-28 03:53:14,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1859 states to 1859 states and 2598 transitions. [2021-12-28 03:53:14,168 INFO L78 Accepts]: Start accepts. Automaton has 1859 states and 2598 transitions. Word has length 38 [2021-12-28 03:53:14,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:53:14,169 INFO L470 AbstractCegarLoop]: Abstraction has 1859 states and 2598 transitions. [2021-12-28 03:53:14,170 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) [2021-12-28 03:53:14,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1859 states and 2598 transitions. [2021-12-28 03:53:14,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-28 03:53:14,175 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:53:14,175 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] [2021-12-28 03:53:14,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 03:53:14,179 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:53:14,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:53:14,180 INFO L85 PathProgramCache]: Analyzing trace with hash -61165644, now seen corresponding path program 1 times [2021-12-28 03:53:14,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:53:14,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393575404] [2021-12-28 03:53:14,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:53:14,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:53:14,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:14,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:53:14,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:14,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 03:53:14,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:14,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-28 03:53:14,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:14,404 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-28 03:53:14,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:53:14,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393575404] [2021-12-28 03:53:14,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393575404] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:53:14,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:53:14,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:53:14,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463278641] [2021-12-28 03:53:14,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:53:14,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:53:14,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:53:14,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:53:14,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:53:14,407 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) [2021-12-28 03:53:21,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:53:21,203 INFO L93 Difference]: Finished difference Result 6942 states and 10376 transitions. [2021-12-28 03:53:21,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:53:21,203 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 [2021-12-28 03:53:21,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:53:21,233 INFO L225 Difference]: With dead ends: 6942 [2021-12-28 03:53:21,233 INFO L226 Difference]: Without dead ends: 5097 [2021-12-28 03:53:21,244 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 [2021-12-28 03:53:21,245 INFO L933 BasicCegarLoop]: 1458 mSDtfsCounter, 3241 mSDsluCounter, 2091 mSDsCounter, 0 mSdLazyCounter, 2322 mSolverCounterSat, 1636 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3399 SdHoareTripleChecker+Valid, 3549 SdHoareTripleChecker+Invalid, 3958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1636 IncrementalHoareTripleChecker+Valid, 2322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-12-28 03:53:21,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3399 Valid, 3549 Invalid, 3958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1636 Valid, 2322 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2021-12-28 03:53:21,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5097 states. [2021-12-28 03:53:21,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5097 to 4246. [2021-12-28 03:53:21,414 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) [2021-12-28 03:53:21,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4246 states to 4246 states and 6172 transitions. [2021-12-28 03:53:21,435 INFO L78 Accepts]: Start accepts. Automaton has 4246 states and 6172 transitions. Word has length 38 [2021-12-28 03:53:21,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:53:21,435 INFO L470 AbstractCegarLoop]: Abstraction has 4246 states and 6172 transitions. [2021-12-28 03:53:21,436 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) [2021-12-28 03:53:21,436 INFO L276 IsEmpty]: Start isEmpty. Operand 4246 states and 6172 transitions. [2021-12-28 03:53:21,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-28 03:53:21,438 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:53:21,439 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] [2021-12-28 03:53:21,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 03:53:21,439 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:53:21,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:53:21,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1896633318, now seen corresponding path program 1 times [2021-12-28 03:53:21,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:53:21,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173083289] [2021-12-28 03:53:21,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:53:21,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:53:21,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:21,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:53:21,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:21,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 03:53:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:21,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-28 03:53:21,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:21,603 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-28 03:53:21,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:53:21,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173083289] [2021-12-28 03:53:21,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173083289] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:53:21,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:53:21,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:53:21,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892403242] [2021-12-28 03:53:21,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:53:21,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:53:21,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:53:21,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:53:21,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:53:21,605 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) [2021-12-28 03:53:25,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:53:25,277 INFO L93 Difference]: Finished difference Result 5088 states and 7602 transitions. [2021-12-28 03:53:25,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:53:25,292 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 [2021-12-28 03:53:25,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:53:25,318 INFO L225 Difference]: With dead ends: 5088 [2021-12-28 03:53:25,319 INFO L226 Difference]: Without dead ends: 5085 [2021-12-28 03:53:25,324 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 [2021-12-28 03:53:25,326 INFO L933 BasicCegarLoop]: 1175 mSDtfsCounter, 2202 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 1009 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2329 SdHoareTripleChecker+Valid, 2164 SdHoareTripleChecker+Invalid, 2079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1009 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-28 03:53:25,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2329 Valid, 2164 Invalid, 2079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1009 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-12-28 03:53:25,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5085 states. [2021-12-28 03:53:25,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5085 to 4245. [2021-12-28 03:53:25,480 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) [2021-12-28 03:53:25,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4245 states to 4245 states and 6170 transitions. [2021-12-28 03:53:25,497 INFO L78 Accepts]: Start accepts. Automaton has 4245 states and 6170 transitions. Word has length 39 [2021-12-28 03:53:25,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:53:25,497 INFO L470 AbstractCegarLoop]: Abstraction has 4245 states and 6170 transitions. [2021-12-28 03:53:25,498 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) [2021-12-28 03:53:25,498 INFO L276 IsEmpty]: Start isEmpty. Operand 4245 states and 6170 transitions. [2021-12-28 03:53:25,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-28 03:53:25,499 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:53:25,499 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] [2021-12-28 03:53:25,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 03:53:25,500 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:53:25,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:53:25,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1333415799, now seen corresponding path program 1 times [2021-12-28 03:53:25,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:53:25,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631745553] [2021-12-28 03:53:25,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:53:25,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:53:25,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:25,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:53:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:25,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 03:53:25,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:25,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-28 03:53:25,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:25,682 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-28 03:53:25,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:53:25,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631745553] [2021-12-28 03:53:25,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631745553] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:53:25,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:53:25,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:53:25,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976460146] [2021-12-28 03:53:25,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:53:25,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:53:25,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:53:25,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:53:25,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:53:25,686 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) [2021-12-28 03:53:29,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:53:29,030 INFO L93 Difference]: Finished difference Result 5087 states and 7600 transitions. [2021-12-28 03:53:29,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:53:29,031 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 [2021-12-28 03:53:29,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:53:29,057 INFO L225 Difference]: With dead ends: 5087 [2021-12-28 03:53:29,057 INFO L226 Difference]: Without dead ends: 5084 [2021-12-28 03:53:29,062 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 [2021-12-28 03:53:29,063 INFO L933 BasicCegarLoop]: 1183 mSDtfsCounter, 2216 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 1002 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2340 SdHoareTripleChecker+Valid, 2154 SdHoareTripleChecker+Invalid, 2074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1002 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:53:29,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2340 Valid, 2154 Invalid, 2074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1002 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-28 03:53:29,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5084 states. [2021-12-28 03:53:29,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5084 to 4244. [2021-12-28 03:53:29,259 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) [2021-12-28 03:53:29,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4244 states to 4244 states and 6168 transitions. [2021-12-28 03:53:29,275 INFO L78 Accepts]: Start accepts. Automaton has 4244 states and 6168 transitions. Word has length 40 [2021-12-28 03:53:29,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:53:29,276 INFO L470 AbstractCegarLoop]: Abstraction has 4244 states and 6168 transitions. [2021-12-28 03:53:29,276 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) [2021-12-28 03:53:29,277 INFO L276 IsEmpty]: Start isEmpty. Operand 4244 states and 6168 transitions. [2021-12-28 03:53:29,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-28 03:53:29,277 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:53:29,278 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] [2021-12-28 03:53:29,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 03:53:29,278 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:53:29,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:53:29,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1614271811, now seen corresponding path program 1 times [2021-12-28 03:53:29,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:53:29,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466080920] [2021-12-28 03:53:29,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:53:29,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:53:29,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:29,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:53:29,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:29,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 03:53:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:29,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-28 03:53:29,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:29,427 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-28 03:53:29,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:53:29,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466080920] [2021-12-28 03:53:29,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466080920] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:53:29,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:53:29,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:53:29,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941148595] [2021-12-28 03:53:29,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:53:29,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:53:29,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:53:29,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:53:29,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:53:29,429 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) [2021-12-28 03:53:34,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:53:34,895 INFO L93 Difference]: Finished difference Result 14347 states and 21990 transitions. [2021-12-28 03:53:34,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:53:34,896 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 [2021-12-28 03:53:34,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:53:34,974 INFO L225 Difference]: With dead ends: 14347 [2021-12-28 03:53:34,975 INFO L226 Difference]: Without dead ends: 10117 [2021-12-28 03:53:34,995 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 [2021-12-28 03:53:34,996 INFO L933 BasicCegarLoop]: 1400 mSDtfsCounter, 3105 mSDsluCounter, 2183 mSDsCounter, 0 mSdLazyCounter, 2203 mSolverCounterSat, 1592 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3267 SdHoareTripleChecker+Valid, 3583 SdHoareTripleChecker+Invalid, 3795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1592 IncrementalHoareTripleChecker+Valid, 2203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:53:34,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3267 Valid, 3583 Invalid, 3795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1592 Valid, 2203 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-12-28 03:53:35,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10117 states. [2021-12-28 03:53:35,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10117 to 8695. [2021-12-28 03:53:35,314 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) [2021-12-28 03:53:35,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8695 states to 8695 states and 13057 transitions. [2021-12-28 03:53:35,351 INFO L78 Accepts]: Start accepts. Automaton has 8695 states and 13057 transitions. Word has length 41 [2021-12-28 03:53:35,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:53:35,353 INFO L470 AbstractCegarLoop]: Abstraction has 8695 states and 13057 transitions. [2021-12-28 03:53:35,353 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) [2021-12-28 03:53:35,353 INFO L276 IsEmpty]: Start isEmpty. Operand 8695 states and 13057 transitions. [2021-12-28 03:53:35,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-28 03:53:35,355 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:53:35,355 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] [2021-12-28 03:53:35,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 03:53:35,356 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:53:35,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:53:35,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1496697658, now seen corresponding path program 1 times [2021-12-28 03:53:35,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:53:35,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395989985] [2021-12-28 03:53:35,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:53:35,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:53:35,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:35,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:53:35,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:35,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 03:53:35,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:35,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-28 03:53:35,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:35,520 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-28 03:53:35,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:53:35,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395989985] [2021-12-28 03:53:35,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395989985] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:53:35,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:53:35,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:53:35,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856840344] [2021-12-28 03:53:35,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:53:35,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:53:35,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:53:35,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:53:35,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:53:35,523 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) [2021-12-28 03:53:38,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:53:38,639 INFO L93 Difference]: Finished difference Result 10085 states and 15441 transitions. [2021-12-28 03:53:38,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:53:38,639 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 [2021-12-28 03:53:38,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:53:38,686 INFO L225 Difference]: With dead ends: 10085 [2021-12-28 03:53:38,686 INFO L226 Difference]: Without dead ends: 10073 [2021-12-28 03:53:38,692 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 [2021-12-28 03:53:38,693 INFO L933 BasicCegarLoop]: 1167 mSDtfsCounter, 2197 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 1064 mSolverCounterSat, 1014 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2322 SdHoareTripleChecker+Valid, 2156 SdHoareTripleChecker+Invalid, 2078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1014 IncrementalHoareTripleChecker+Valid, 1064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-28 03:53:38,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2322 Valid, 2156 Invalid, 2078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1014 Valid, 1064 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-28 03:53:38,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10073 states. [2021-12-28 03:53:39,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10073 to 8685. [2021-12-28 03:53:39,025 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) [2021-12-28 03:53:39,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8685 states to 8685 states and 13043 transitions. [2021-12-28 03:53:39,064 INFO L78 Accepts]: Start accepts. Automaton has 8685 states and 13043 transitions. Word has length 42 [2021-12-28 03:53:39,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:53:39,065 INFO L470 AbstractCegarLoop]: Abstraction has 8685 states and 13043 transitions. [2021-12-28 03:53:39,065 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) [2021-12-28 03:53:39,066 INFO L276 IsEmpty]: Start isEmpty. Operand 8685 states and 13043 transitions. [2021-12-28 03:53:39,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-28 03:53:39,070 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:53:39,070 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 03:53:39,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 03:53:39,070 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:53:39,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:53:39,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1218058086, now seen corresponding path program 1 times [2021-12-28 03:53:39,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:53:39,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999248522] [2021-12-28 03:53:39,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:53:39,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:53:39,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:39,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:53:39,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:39,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 03:53:39,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:39,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-28 03:53:39,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:39,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:53:39,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:39,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 03:53:39,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:39,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-28 03:53:39,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:39,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:53:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:39,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 03:53:39,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:39,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:53:39,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:39,245 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-28 03:53:39,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:53:39,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999248522] [2021-12-28 03:53:39,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999248522] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:53:39,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:53:39,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 03:53:39,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101573620] [2021-12-28 03:53:39,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:53:39,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:53:39,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:53:39,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:53:39,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-28 03:53:39,247 INFO L87 Difference]: Start difference. First operand 8685 states and 13043 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-28 03:53:44,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:53:44,143 INFO L93 Difference]: Finished difference Result 21527 states and 33496 transitions. [2021-12-28 03:53:44,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 03:53:44,144 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 87 [2021-12-28 03:53:44,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:53:44,201 INFO L225 Difference]: With dead ends: 21527 [2021-12-28 03:53:44,201 INFO L226 Difference]: Without dead ends: 12856 [2021-12-28 03:53:44,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-12-28 03:53:44,243 INFO L933 BasicCegarLoop]: 1232 mSDtfsCounter, 2704 mSDsluCounter, 2803 mSDsCounter, 0 mSdLazyCounter, 2450 mSolverCounterSat, 1863 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2826 SdHoareTripleChecker+Valid, 4035 SdHoareTripleChecker+Invalid, 4313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1863 IncrementalHoareTripleChecker+Valid, 2450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-12-28 03:53:44,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2826 Valid, 4035 Invalid, 4313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1863 Valid, 2450 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-12-28 03:53:44,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12856 states. [2021-12-28 03:53:44,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12856 to 10655. [2021-12-28 03:53:44,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10655 states, 7772 states have (on average 1.3117601646937724) internal successors, (10195), 7825 states have internal predecessors, (10195), 2063 states have call successors, (2063), 437 states have call predecessors, (2063), 819 states have return successors, (4329), 2428 states have call predecessors, (4329), 2057 states have call successors, (4329) [2021-12-28 03:53:44,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10655 states to 10655 states and 16587 transitions. [2021-12-28 03:53:44,790 INFO L78 Accepts]: Start accepts. Automaton has 10655 states and 16587 transitions. Word has length 87 [2021-12-28 03:53:44,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:53:44,791 INFO L470 AbstractCegarLoop]: Abstraction has 10655 states and 16587 transitions. [2021-12-28 03:53:44,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-28 03:53:44,792 INFO L276 IsEmpty]: Start isEmpty. Operand 10655 states and 16587 transitions. [2021-12-28 03:53:44,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-28 03:53:44,797 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:53:44,797 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:53:44,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 03:53:44,798 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:53:44,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:53:44,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1069843511, now seen corresponding path program 1 times [2021-12-28 03:53:44,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:53:44,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006069185] [2021-12-28 03:53:44,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:53:44,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:53:44,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:44,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:53:44,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:44,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 03:53:44,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:44,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-28 03:53:44,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:44,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-28 03:53:44,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:44,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 03:53:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:44,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-28 03:53:44,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:44,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 03:53:44,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:44,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 03:53:44,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:44,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 03:53:44,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:44,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:53:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:45,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:53:45,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:45,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-28 03:53:45,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:45,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:53:45,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:53:45,034 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-28 03:53:45,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:53:45,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006069185] [2021-12-28 03:53:45,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006069185] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:53:45,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:53:45,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 03:53:45,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819724091] [2021-12-28 03:53:45,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:53:45,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 03:53:45,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:53:45,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 03:53:45,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-28 03:53:45,037 INFO L87 Difference]: Start difference. First operand 10655 states and 16587 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (17), 8 states have call predecessors, (17), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13)