./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--bdc--bdc.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--bdc--bdc.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 f9061bc17f5b81d8b71557fcfcad78d4aeee3eb70f5055a497a3bfac3b14ddef --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 15:18:27,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 15:18:27,430 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 15:18:27,469 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 15:18:27,470 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 15:18:27,474 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 15:18:27,475 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 15:18:27,482 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 15:18:27,483 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 15:18:27,484 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 15:18:27,485 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 15:18:27,487 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 15:18:27,487 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 15:18:27,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 15:18:27,494 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 15:18:27,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 15:18:27,499 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 15:18:27,501 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 15:18:27,503 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 15:18:27,507 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 15:18:27,509 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 15:18:27,510 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 15:18:27,511 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 15:18:27,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 15:18:27,513 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 15:18:27,513 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 15:18:27,514 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 15:18:27,514 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 15:18:27,515 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 15:18:27,515 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 15:18:27,516 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 15:18:27,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 15:18:27,518 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 15:18:27,519 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 15:18:27,520 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 15:18:27,521 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 15:18:27,522 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 15:18:27,522 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 15:18:27,522 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 15:18:27,523 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 15:18:27,523 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 15:18:27,524 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 15:18:27,561 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 15:18:27,561 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 15:18:27,562 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 15:18:27,562 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 15:18:27,563 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 15:18:27,563 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 15:18:27,564 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 15:18:27,564 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 15:18:27,564 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 15:18:27,564 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 15:18:27,565 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 15:18:27,565 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 15:18:27,565 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 15:18:27,566 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 15:18:27,566 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 15:18:27,566 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 15:18:27,566 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 15:18:27,566 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 15:18:27,567 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 15:18:27,567 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 15:18:27,567 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 15:18:27,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 15:18:27,567 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 15:18:27,568 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 15:18:27,568 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 15:18:27,568 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 15:18:27,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 15:18:27,569 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 15:18:27,569 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 15:18:27,569 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 15:18:27,569 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 15:18:27,569 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f9061bc17f5b81d8b71557fcfcad78d4aeee3eb70f5055a497a3bfac3b14ddef [2021-12-22 15:18:27,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 15:18:27,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 15:18:27,834 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 15:18:27,835 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 15:18:27,835 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 15:18:27,837 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--bdc--bdc.ko-entry_point.cil.out.i [2021-12-22 15:18:27,898 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ca442011/e4276a97acaa46319b165c77eb7be25c/FLAGe93434945 [2021-12-22 15:18:28,579 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 15:18:28,580 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--bdc--bdc.ko-entry_point.cil.out.i [2021-12-22 15:18:28,627 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ca442011/e4276a97acaa46319b165c77eb7be25c/FLAGe93434945 [2021-12-22 15:18:28,868 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ca442011/e4276a97acaa46319b165c77eb7be25c [2021-12-22 15:18:28,871 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 15:18:28,873 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 15:18:28,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 15:18:28,876 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 15:18:28,879 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 15:18:28,880 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:18:28" (1/1) ... [2021-12-22 15:18:28,882 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cc01619 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:18:28, skipping insertion in model container [2021-12-22 15:18:28,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:18:28" (1/1) ... [2021-12-22 15:18:28,889 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 15:18:29,001 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 15:18:30,821 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--bdc--bdc.ko-entry_point.cil.out.i[338700,338713] [2021-12-22 15:18:30,886 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 15:18:30,914 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 15:18:31,348 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--bdc--bdc.ko-entry_point.cil.out.i[338700,338713] [2021-12-22 15:18:31,352 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 15:18:31,485 INFO L208 MainTranslator]: Completed translation [2021-12-22 15:18:31,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:18:31 WrapperNode [2021-12-22 15:18:31,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 15:18:31,505 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 15:18:31,505 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 15:18:31,506 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 15:18:31,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:18:31" (1/1) ... [2021-12-22 15:18:31,692 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:18:31" (1/1) ... [2021-12-22 15:18:31,872 INFO L137 Inliner]: procedures = 274, calls = 5784, calls flagged for inlining = 107, calls inlined = 80, statements flattened = 6383 [2021-12-22 15:18:31,872 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 15:18:31,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 15:18:31,873 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 15:18:31,873 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 15:18:31,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:18:31" (1/1) ... [2021-12-22 15:18:31,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:18:31" (1/1) ... [2021-12-22 15:18:31,929 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:18:31" (1/1) ... [2021-12-22 15:18:31,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:18:31" (1/1) ... [2021-12-22 15:18:32,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:18:31" (1/1) ... [2021-12-22 15:18:32,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:18:31" (1/1) ... [2021-12-22 15:18:32,149 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:18:31" (1/1) ... [2021-12-22 15:18:32,183 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 15:18:32,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 15:18:32,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 15:18:32,186 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 15:18:32,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:18:31" (1/1) ... [2021-12-22 15:18:32,197 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 15:18:32,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 15:18:32,225 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 15:18:32,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 15:18:32,269 INFO L130 BoogieDeclarations]: Found specification of procedure ep0_queue_status_stage [2021-12-22 15:18:32,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ep0_queue_status_stage [2021-12-22 15:18:32,269 INFO L130 BoogieDeclarations]: Found specification of procedure ep0_queue [2021-12-22 15:18:32,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ep0_queue [2021-12-22 15:18:32,269 INFO L130 BoogieDeclarations]: Found specification of procedure ep_bd_list_free [2021-12-22 15:18:32,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ep_bd_list_free [2021-12-22 15:18:32,270 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-22 15:18:32,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-22 15:18:32,270 INFO L130 BoogieDeclarations]: Found specification of procedure init_ep [2021-12-22 15:18:32,270 INFO L138 BoogieDeclarations]: Found implementation of procedure init_ep [2021-12-22 15:18:32,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-22 15:18:32,270 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-22 15:18:32,271 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2021-12-22 15:18:32,271 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2021-12-22 15:18:32,271 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-12-22 15:18:32,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-12-22 15:18:32,271 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_reset [2021-12-22 15:18:32,271 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_reset [2021-12-22 15:18:32,271 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-22 15:18:32,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-22 15:18:32,272 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2021-12-22 15:18:32,272 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2021-12-22 15:18:32,272 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_ep_disable [2021-12-22 15:18:32,272 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_ep_disable [2021-12-22 15:18:32,272 INFO L130 BoogieDeclarations]: Found specification of procedure usb_del_gadget_udc [2021-12-22 15:18:32,272 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_del_gadget_udc [2021-12-22 15:18:32,273 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-22 15:18:32,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-22 15:18:32,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-22 15:18:32,273 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-22 15:18:32,273 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_type [2021-12-22 15:18:32,273 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_type [2021-12-22 15:18:32,273 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-22 15:18:32,274 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-22 15:18:32,274 INFO L130 BoogieDeclarations]: Found specification of procedure fls [2021-12-22 15:18:32,274 INFO L138 BoogieDeclarations]: Found implementation of procedure fls [2021-12-22 15:18:32,274 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_req_complete [2021-12-22 15:18:32,275 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_req_complete [2021-12-22 15:18:32,275 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_gadget_free_request [2021-12-22 15:18:32,275 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_gadget_free_request [2021-12-22 15:18:32,275 INFO L130 BoogieDeclarations]: Found specification of procedure bd_add_to_bdi [2021-12-22 15:18:32,275 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_add_to_bdi [2021-12-22 15:18:32,275 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_remove [2021-12-22 15:18:32,275 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_remove [2021-12-22 15:18:32,276 INFO L130 BoogieDeclarations]: Found specification of procedure dma_zalloc_coherent [2021-12-22 15:18:32,276 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_zalloc_coherent [2021-12-22 15:18:32,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 15:18:32,276 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-22 15:18:32,276 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-22 15:18:32,277 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_udc_stop [2021-12-22 15:18:32,277 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_udc_stop [2021-12-22 15:18:32,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 15:18:32,277 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-12-22 15:18:32,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-12-22 15:18:32,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-22 15:18:32,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-22 15:18:32,278 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_isoc [2021-12-22 15:18:32,279 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_isoc [2021-12-22 15:18:32,279 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-22 15:18:32,280 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-22 15:18:32,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 15:18:32,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 15:18:32,280 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_free_ep [2021-12-22 15:18:32,280 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_free_ep [2021-12-22 15:18:32,280 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_notify_xfr [2021-12-22 15:18:32,280 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_notify_xfr [2021-12-22 15:18:32,280 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-12-22 15:18:32,281 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-12-22 15:18:32,281 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-22 15:18:32,281 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-22 15:18:32,281 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_stop_ep [2021-12-22 15:18:32,281 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_stop_ep [2021-12-22 15:18:32,282 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-22 15:18:32,282 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-22 15:18:32,282 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_ep_set_stall [2021-12-22 15:18:32,282 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_ep_set_stall [2021-12-22 15:18:32,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-22 15:18:32,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-22 15:18:32,283 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_map_request [2021-12-22 15:18:32,283 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_map_request [2021-12-22 15:18:32,283 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_mem_free [2021-12-22 15:18:32,283 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_mem_free [2021-12-22 15:18:32,284 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_dbg_bd_list [2021-12-22 15:18:32,284 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_dbg_bd_list [2021-12-22 15:18:32,284 INFO L130 BoogieDeclarations]: Found specification of procedure ep_set_halt [2021-12-22 15:18:32,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ep_set_halt [2021-12-22 15:18:32,284 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-12-22 15:18:32,284 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-12-22 15:18:32,285 INFO L130 BoogieDeclarations]: Found specification of procedure bdi_to_tbi [2021-12-22 15:18:32,285 INFO L138 BoogieDeclarations]: Found implementation of procedure bdi_to_tbi [2021-12-22 15:18:32,285 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-12-22 15:18:32,285 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-12-22 15:18:32,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 15:18:32,285 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_mem_init [2021-12-22 15:18:32,286 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_mem_init [2021-12-22 15:18:32,286 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_config_ep [2021-12-22 15:18:32,286 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_config_ep [2021-12-22 15:18:32,286 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_gadget_ep_enable [2021-12-22 15:18:32,287 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_gadget_ep_enable [2021-12-22 15:18:32,287 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_queue_xfr [2021-12-22 15:18:32,287 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_queue_xfr [2021-12-22 15:18:32,288 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_hw_exit [2021-12-22 15:18:32,288 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_hw_exit [2021-12-22 15:18:32,288 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-22 15:18:32,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-22 15:18:32,288 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-22 15:18:32,288 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-22 15:18:32,288 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_gadget_ep_disable [2021-12-22 15:18:32,289 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_gadget_ep_disable [2021-12-22 15:18:32,289 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-12-22 15:18:32,289 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-12-22 15:18:32,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 15:18:32,289 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-22 15:18:32,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-22 15:18:32,290 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-22 15:18:32,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-22 15:18:32,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 15:18:32,290 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_calloc [2021-12-22 15:18:32,291 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-22 15:18:32,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-22 15:18:32,293 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_mask_and_coherent [2021-12-22 15:18:32,293 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_mask_and_coherent [2021-12-22 15:18:32,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 15:18:32,295 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_gadget_ep_dequeue [2021-12-22 15:18:32,295 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_gadget_ep_dequeue [2021-12-22 15:18:32,295 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_set_state [2021-12-22 15:18:32,296 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_set_state [2021-12-22 15:18:32,296 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-22 15:18:32,301 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-22 15:18:32,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 15:18:32,301 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_udc_start [2021-12-22 15:18:32,301 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_udc_start [2021-12-22 15:18:32,301 INFO L130 BoogieDeclarations]: Found specification of procedure poll_oip [2021-12-22 15:18:32,302 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_oip [2021-12-22 15:18:32,302 INFO L130 BoogieDeclarations]: Found specification of procedure ___ratelimit [2021-12-22 15:18:32,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ___ratelimit [2021-12-22 15:18:32,303 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_stop [2021-12-22 15:18:32,303 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_stop [2021-12-22 15:18:32,303 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_softconn [2021-12-22 15:18:32,303 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_softconn [2021-12-22 15:18:32,303 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_run [2021-12-22 15:18:32,304 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_run [2021-12-22 15:18:32,304 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_set_maxpacket_limit [2021-12-22 15:18:32,304 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_set_maxpacket_limit [2021-12-22 15:18:32,304 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_submit_cmd [2021-12-22 15:18:32,304 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_submit_cmd [2021-12-22 15:18:32,304 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_udc_wakeup [2021-12-22 15:18:32,304 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_udc_wakeup [2021-12-22 15:18:32,304 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-22 15:18:32,305 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-22 15:18:32,305 INFO L130 BoogieDeclarations]: Found specification of procedure find_end_bdi [2021-12-22 15:18:32,305 INFO L138 BoogieDeclarations]: Found implementation of procedure find_end_bdi [2021-12-22 15:18:32,305 INFO L130 BoogieDeclarations]: Found specification of procedure bdi_to_bd [2021-12-22 15:18:32,305 INFO L138 BoogieDeclarations]: Found implementation of procedure bdi_to_bd [2021-12-22 15:18:32,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 15:18:32,305 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_writel [2021-12-22 15:18:32,305 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_writel [2021-12-22 15:18:32,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 15:18:32,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 15:18:32,306 INFO L130 BoogieDeclarations]: Found specification of procedure chain_table [2021-12-22 15:18:32,306 INFO L138 BoogieDeclarations]: Found implementation of procedure chain_table [2021-12-22 15:18:32,306 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_readl [2021-12-22 15:18:32,306 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_readl [2021-12-22 15:18:32,306 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_ep_enable [2021-12-22 15:18:32,306 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_ep_enable [2021-12-22 15:18:32,306 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-22 15:18:32,307 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-22 15:18:32,307 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_probe [2021-12-22 15:18:32,307 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_probe [2021-12-22 15:18:33,058 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 15:18:33,060 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 15:18:34,203 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-22 15:18:42,244 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 15:18:42,267 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 15:18:42,267 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-22 15:18:42,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:18:42 BoogieIcfgContainer [2021-12-22 15:18:42,271 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 15:18:42,273 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 15:18:42,273 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 15:18:42,276 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 15:18:42,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:18:28" (1/3) ... [2021-12-22 15:18:42,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45cae5d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:18:42, skipping insertion in model container [2021-12-22 15:18:42,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:18:31" (2/3) ... [2021-12-22 15:18:42,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45cae5d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:18:42, skipping insertion in model container [2021-12-22 15:18:42,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:18:42" (3/3) ... [2021-12-22 15:18:42,281 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--bdc--bdc.ko-entry_point.cil.out.i [2021-12-22 15:18:42,288 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 15:18:42,288 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 15:18:42,351 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 15:18:42,360 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 15:18:42,361 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 15:18:42,413 INFO L276 IsEmpty]: Start isEmpty. Operand has 1459 states, 1027 states have (on average 1.3320350535540408) internal successors, (1368), 1045 states have internal predecessors, (1368), 353 states have call successors, (353), 78 states have call predecessors, (353), 77 states have return successors, (348), 348 states have call predecessors, (348), 348 states have call successors, (348) [2021-12-22 15:18:42,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-22 15:18:42,433 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 15:18:42,433 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 15:18:42,434 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 15:18:42,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 15:18:42,439 INFO L85 PathProgramCache]: Analyzing trace with hash 2139334231, now seen corresponding path program 1 times [2021-12-22 15:18:42,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 15:18:42,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901155380] [2021-12-22 15:18:42,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 15:18:42,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 15:18:42,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:18:43,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-22 15:18:43,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:18:43,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:18:43,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:18:43,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:18:43,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:18:43,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 15:18:43,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:18:43,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:18:43,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:18:43,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-22 15:18:43,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:18:43,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:18:43,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:18:43,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-22 15:18:43,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:18:43,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:18:43,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:18:43,360 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-22 15:18:43,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 15:18:43,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901155380] [2021-12-22 15:18:43,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901155380] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 15:18:43,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 15:18:43,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 15:18:43,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916790624] [2021-12-22 15:18:43,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 15:18:43,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 15:18:43,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 15:18:43,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 15:18:43,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 15:18:43,413 INFO L87 Difference]: Start difference. First operand has 1459 states, 1027 states have (on average 1.3320350535540408) internal successors, (1368), 1045 states have internal predecessors, (1368), 353 states have call successors, (353), 78 states have call predecessors, (353), 77 states have return successors, (348), 348 states have call predecessors, (348), 348 states have call successors, (348) Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-22 15:18:48,100 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 15:18:51,952 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 15:18:53,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 15:18:53,872 INFO L93 Difference]: Finished difference Result 4012 states and 5742 transitions. [2021-12-22 15:18:53,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 15:18:53,875 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2021-12-22 15:18:53,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 15:18:53,926 INFO L225 Difference]: With dead ends: 4012 [2021-12-22 15:18:53,926 INFO L226 Difference]: Without dead ends: 2530 [2021-12-22 15:18:53,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-22 15:18:53,946 INFO L933 BasicCegarLoop]: 2281 mSDtfsCounter, 1909 mSDsluCounter, 2970 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 1984 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2112 SdHoareTripleChecker+Valid, 5251 SdHoareTripleChecker+Invalid, 3089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1984 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2021-12-22 15:18:53,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2112 Valid, 5251 Invalid, 3089 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1984 Valid, 1103 Invalid, 2 Unknown, 0 Unchecked, 10.1s Time] [2021-12-22 15:18:53,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2530 states. [2021-12-22 15:18:54,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2530 to 2466. [2021-12-22 15:18:54,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 1727 states have (on average 1.3103647944412276) internal successors, (2263), 1748 states have internal predecessors, (2263), 601 states have call successors, (601), 138 states have call predecessors, (601), 137 states have return successors, (600), 599 states have call predecessors, (600), 600 states have call successors, (600) [2021-12-22 15:18:54,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 3464 transitions. [2021-12-22 15:18:54,267 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 3464 transitions. Word has length 72 [2021-12-22 15:18:54,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 15:18:54,268 INFO L470 AbstractCegarLoop]: Abstraction has 2466 states and 3464 transitions. [2021-12-22 15:18:54,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-22 15:18:54,269 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 3464 transitions. [2021-12-22 15:18:54,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-22 15:18:54,280 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 15:18:54,280 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 15:18:54,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 15:18:54,281 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 15:18:54,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 15:18:54,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1055536844, now seen corresponding path program 1 times [2021-12-22 15:18:54,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 15:18:54,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137753175] [2021-12-22 15:18:54,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 15:18:54,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 15:18:54,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:18:54,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 15:18:54,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:18:54,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:18:54,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:18:54,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:18:54,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:18:54,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 15:18:54,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:18:54,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:18:54,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:18:54,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:18:54,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:18:54,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 15:18:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:18:54,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:18:54,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:18:54,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:18:54,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:18:54,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-22 15:18:54,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:18:54,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:18:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:18:54,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:18:54,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:18:54,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-22 15:18:54,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:18:54,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:18:54,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:18:54,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:18:54,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:18:54,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-22 15:18:54,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:18:54,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:18:54,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:18:54,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-22 15:18:54,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:18:54,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:18:54,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:18:54,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-22 15:18:54,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:18:54,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:18:54,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:18:55,005 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-12-22 15:18:55,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 15:18:55,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137753175] [2021-12-22 15:18:55,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137753175] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 15:18:55,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 15:18:55,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 15:18:55,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809874538] [2021-12-22 15:18:55,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 15:18:55,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 15:18:55,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 15:18:55,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 15:18:55,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 15:18:55,010 INFO L87 Difference]: Start difference. First operand 2466 states and 3464 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-22 15:18:58,866 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 15:19:02,982 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 15:19:05,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 15:19:05,562 INFO L93 Difference]: Finished difference Result 4526 states and 6404 transitions. [2021-12-22 15:19:05,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 15:19:05,563 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 152 [2021-12-22 15:19:05,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 15:19:05,590 INFO L225 Difference]: With dead ends: 4526 [2021-12-22 15:19:05,590 INFO L226 Difference]: Without dead ends: 4523 [2021-12-22 15:19:05,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-22 15:19:05,595 INFO L933 BasicCegarLoop]: 2382 mSDtfsCounter, 1908 mSDsluCounter, 3025 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 1897 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2096 SdHoareTripleChecker+Valid, 5407 SdHoareTripleChecker+Invalid, 2981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1897 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2021-12-22 15:19:05,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2096 Valid, 5407 Invalid, 2981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1897 Valid, 1082 Invalid, 2 Unknown, 0 Unchecked, 10.3s Time] [2021-12-22 15:19:05,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4523 states. [2021-12-22 15:19:05,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4523 to 4379. [2021-12-22 15:19:05,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4379 states, 3068 states have (on average 1.308670143415906) internal successors, (4015), 3118 states have internal predecessors, (4015), 1060 states have call successors, (1060), 250 states have call predecessors, (1060), 250 states have return successors, (1078), 1044 states have call predecessors, (1078), 1059 states have call successors, (1078) [2021-12-22 15:19:05,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4379 states to 4379 states and 6153 transitions. [2021-12-22 15:19:05,791 INFO L78 Accepts]: Start accepts. Automaton has 4379 states and 6153 transitions. Word has length 152 [2021-12-22 15:19:05,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 15:19:05,794 INFO L470 AbstractCegarLoop]: Abstraction has 4379 states and 6153 transitions. [2021-12-22 15:19:05,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-22 15:19:05,795 INFO L276 IsEmpty]: Start isEmpty. Operand 4379 states and 6153 transitions. [2021-12-22 15:19:05,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-12-22 15:19:05,808 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 15:19:05,809 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 15:19:05,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 15:19:05,809 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 15:19:05,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 15:19:05,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1344442639, now seen corresponding path program 1 times [2021-12-22 15:19:05,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 15:19:05,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320435396] [2021-12-22 15:19:05,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 15:19:05,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 15:19:06,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:06,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 15:19:06,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:06,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:06,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:06,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:19:06,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:06,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 15:19:06,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:06,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:06,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:06,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:19:06,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:06,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 15:19:06,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:06,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:06,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:06,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:19:06,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:06,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-22 15:19:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:06,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:06,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:06,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:19:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:06,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-22 15:19:06,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:06,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:06,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:19:06,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:06,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-22 15:19:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:06,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:06,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:06,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-22 15:19:06,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:06,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:06,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:06,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-22 15:19:06,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:06,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:06,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:06,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-22 15:19:06,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:06,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-22 15:19:06,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:06,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-22 15:19:06,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:06,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-22 15:19:06,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:06,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-12-22 15:19:06,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:06,478 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-12-22 15:19:06,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 15:19:06,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320435396] [2021-12-22 15:19:06,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320435396] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 15:19:06,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 15:19:06,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 15:19:06,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438673002] [2021-12-22 15:19:06,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 15:19:06,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 15:19:06,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 15:19:06,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 15:19:06,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-22 15:19:06,481 INFO L87 Difference]: Start difference. First operand 4379 states and 6153 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-22 15:19:11,306 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 15:19:13,336 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 15:19:15,365 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 15:19:23,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 15:19:23,037 INFO L93 Difference]: Finished difference Result 8925 states and 12587 transitions. [2021-12-22 15:19:23,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 15:19:23,038 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 194 [2021-12-22 15:19:23,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 15:19:23,065 INFO L225 Difference]: With dead ends: 8925 [2021-12-22 15:19:23,065 INFO L226 Difference]: Without dead ends: 4550 [2021-12-22 15:19:23,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-12-22 15:19:23,083 INFO L933 BasicCegarLoop]: 1719 mSDtfsCounter, 1253 mSDsluCounter, 2007 mSDsCounter, 0 mSdLazyCounter, 3995 mSolverCounterSat, 1189 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 3726 SdHoareTripleChecker+Invalid, 5187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1189 IncrementalHoareTripleChecker+Valid, 3995 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2021-12-22 15:19:23,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1510 Valid, 3726 Invalid, 5187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1189 Valid, 3995 Invalid, 3 Unknown, 0 Unchecked, 16.2s Time] [2021-12-22 15:19:23,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4550 states. [2021-12-22 15:19:23,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4550 to 4441. [2021-12-22 15:19:23,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4441 states, 3108 states have (on average 1.3072715572715572) internal successors, (4063), 3160 states have internal predecessors, (4063), 1076 states have call successors, (1076), 250 states have call predecessors, (1076), 256 states have return successors, (1105), 1062 states have call predecessors, (1105), 1075 states have call successors, (1105) [2021-12-22 15:19:23,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4441 states to 4441 states and 6244 transitions. [2021-12-22 15:19:23,295 INFO L78 Accepts]: Start accepts. Automaton has 4441 states and 6244 transitions. Word has length 194 [2021-12-22 15:19:23,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 15:19:23,295 INFO L470 AbstractCegarLoop]: Abstraction has 4441 states and 6244 transitions. [2021-12-22 15:19:23,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-22 15:19:23,296 INFO L276 IsEmpty]: Start isEmpty. Operand 4441 states and 6244 transitions. [2021-12-22 15:19:23,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-12-22 15:19:23,303 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 15:19:23,303 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 15:19:23,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 15:19:23,304 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 15:19:23,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 15:19:23,304 INFO L85 PathProgramCache]: Analyzing trace with hash 583830063, now seen corresponding path program 1 times [2021-12-22 15:19:23,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 15:19:23,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146840929] [2021-12-22 15:19:23,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 15:19:23,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 15:19:23,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:23,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 15:19:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:23,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:23,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:23,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:19:23,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:23,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 15:19:23,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:23,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:23,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:23,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:19:23,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:23,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 15:19:23,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:23,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:23,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:23,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:19:23,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:23,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-22 15:19:23,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:23,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:23,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:19:23,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:23,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-22 15:19:23,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:23,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:23,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:23,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:19:23,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:23,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-22 15:19:23,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:23,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:23,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:23,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-22 15:19:23,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:23,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:23,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:23,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-22 15:19:23,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:23,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:19:23,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:23,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-22 15:19:23,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:23,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-22 15:19:23,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:23,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-22 15:19:23,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:23,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-22 15:19:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:23,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-12-22 15:19:23,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:19:23,821 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-12-22 15:19:23,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 15:19:23,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146840929] [2021-12-22 15:19:23,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146840929] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 15:19:23,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 15:19:23,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 15:19:23,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258656999] [2021-12-22 15:19:23,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 15:19:23,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 15:19:23,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 15:19:23,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 15:19:23,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-22 15:19:23,824 INFO L87 Difference]: Start difference. First operand 4441 states and 6244 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16)