./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 ff03de63 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-ff03de6 [2021-12-21 16:51:43,837 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 16:51:43,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 16:51:43,912 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 16:51:43,914 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 16:51:43,916 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 16:51:43,918 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 16:51:43,920 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 16:51:43,921 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 16:51:43,925 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 16:51:43,925 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 16:51:43,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 16:51:43,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 16:51:43,928 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 16:51:43,929 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 16:51:43,932 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 16:51:43,932 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 16:51:43,933 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 16:51:43,935 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 16:51:43,937 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 16:51:43,939 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 16:51:43,939 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 16:51:43,940 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 16:51:43,941 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 16:51:43,947 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 16:51:43,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 16:51:43,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 16:51:43,948 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 16:51:43,949 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 16:51:43,949 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 16:51:43,950 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 16:51:43,950 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 16:51:43,951 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 16:51:43,952 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 16:51:43,953 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 16:51:43,953 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 16:51:43,954 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 16:51:43,954 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 16:51:43,954 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 16:51:43,954 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 16:51:43,955 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 16:51:43,956 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-21 16:51:43,980 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 16:51:43,980 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 16:51:43,981 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 16:51:43,981 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 16:51:43,982 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 16:51:43,982 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 16:51:43,982 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 16:51:43,982 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 16:51:43,982 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 16:51:43,983 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 16:51:43,983 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 16:51:43,984 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 16:51:43,984 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 16:51:43,984 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 16:51:43,984 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 16:51:43,984 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 16:51:43,984 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 16:51:43,984 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 16:51:43,985 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 16:51:43,985 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 16:51:43,985 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 16:51:43,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 16:51:43,985 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 16:51:43,985 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 16:51:43,985 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 16:51:43,986 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 16:51:43,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 16:51:43,987 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 16:51:43,987 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 16:51:43,987 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 16:51:43,987 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 16:51:43,988 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f9061bc17f5b81d8b71557fcfcad78d4aeee3eb70f5055a497a3bfac3b14ddef [2021-12-21 16:51:44,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 16:51:44,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 16:51:44,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 16:51:44,218 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 16:51:44,218 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 16:51:44,219 INFO L432 ainManager$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 [2021-12-21 16:51:44,264 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03b269957/2b4674355f0d41c6a6c3fdd66a815261/FLAGfb415c1da [2021-12-21 16:51:44,841 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 16:51:44,841 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 [2021-12-21 16:51:44,891 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03b269957/2b4674355f0d41c6a6c3fdd66a815261/FLAGfb415c1da [2021-12-21 16:51:44,996 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03b269957/2b4674355f0d41c6a6c3fdd66a815261 [2021-12-21 16:51:44,998 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 16:51:45,000 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 16:51:45,002 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 16:51:45,002 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 16:51:45,005 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 16:51:45,006 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:51:44" (1/1) ... [2021-12-21 16:51:45,008 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27360c70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:51:45, skipping insertion in model container [2021-12-21 16:51:45,008 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:51:44" (1/1) ... [2021-12-21 16:51:45,013 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 16:51:45,109 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 16:51:46,608 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] [2021-12-21 16:51:46,654 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 16:51:46,670 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 16:51:47,023 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] [2021-12-21 16:51:47,026 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 16:51:47,090 INFO L208 MainTranslator]: Completed translation [2021-12-21 16:51:47,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:51:47 WrapperNode [2021-12-21 16:51:47,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 16:51:47,093 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 16:51:47,093 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 16:51:47,093 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 16:51:47,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:51:47" (1/1) ... [2021-12-21 16:51:47,205 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:51:47" (1/1) ... [2021-12-21 16:51:47,369 INFO L137 Inliner]: procedures = 274, calls = 5784, calls flagged for inlining = 107, calls inlined = 80, statements flattened = 6383 [2021-12-21 16:51:47,369 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 16:51:47,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 16:51:47,370 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 16:51:47,370 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 16:51:47,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:51:47" (1/1) ... [2021-12-21 16:51:47,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:51:47" (1/1) ... [2021-12-21 16:51:47,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:51:47" (1/1) ... [2021-12-21 16:51:47,410 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:51:47" (1/1) ... [2021-12-21 16:51:47,578 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:51:47" (1/1) ... [2021-12-21 16:51:47,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:51:47" (1/1) ... [2021-12-21 16:51:47,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:51:47" (1/1) ... [2021-12-21 16:51:47,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 16:51:47,654 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 16:51:47,654 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 16:51:47,654 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 16:51:47,655 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:51:47" (1/1) ... [2021-12-21 16:51:47,660 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 16:51:47,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 16:51:47,688 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) [2021-12-21 16:51:47,721 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 [2021-12-21 16:51:47,738 INFO L130 BoogieDeclarations]: Found specification of procedure ep0_queue_status_stage [2021-12-21 16:51:47,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ep0_queue_status_stage [2021-12-21 16:51:47,738 INFO L130 BoogieDeclarations]: Found specification of procedure ep0_queue [2021-12-21 16:51:47,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ep0_queue [2021-12-21 16:51:47,738 INFO L130 BoogieDeclarations]: Found specification of procedure ep_bd_list_free [2021-12-21 16:51:47,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ep_bd_list_free [2021-12-21 16:51:47,739 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-21 16:51:47,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-21 16:51:47,739 INFO L130 BoogieDeclarations]: Found specification of procedure init_ep [2021-12-21 16:51:47,739 INFO L138 BoogieDeclarations]: Found implementation of procedure init_ep [2021-12-21 16:51:47,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-21 16:51:47,739 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-21 16:51:47,739 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2021-12-21 16:51:47,739 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2021-12-21 16:51:47,740 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-12-21 16:51:47,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-12-21 16:51:47,740 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_reset [2021-12-21 16:51:47,740 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_reset [2021-12-21 16:51:47,740 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-21 16:51:47,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-21 16:51:47,740 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2021-12-21 16:51:47,740 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2021-12-21 16:51:47,740 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_ep_disable [2021-12-21 16:51:47,741 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_ep_disable [2021-12-21 16:51:47,741 INFO L130 BoogieDeclarations]: Found specification of procedure usb_del_gadget_udc [2021-12-21 16:51:47,741 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_del_gadget_udc [2021-12-21 16:51:47,741 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-21 16:51:47,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-21 16:51:47,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-21 16:51:47,741 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-21 16:51:47,741 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_type [2021-12-21 16:51:47,741 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_type [2021-12-21 16:51:47,742 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-21 16:51:47,742 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-21 16:51:47,742 INFO L130 BoogieDeclarations]: Found specification of procedure fls [2021-12-21 16:51:47,742 INFO L138 BoogieDeclarations]: Found implementation of procedure fls [2021-12-21 16:51:47,742 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_req_complete [2021-12-21 16:51:47,742 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_req_complete [2021-12-21 16:51:47,743 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_gadget_free_request [2021-12-21 16:51:47,743 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_gadget_free_request [2021-12-21 16:51:47,743 INFO L130 BoogieDeclarations]: Found specification of procedure bd_add_to_bdi [2021-12-21 16:51:47,743 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_add_to_bdi [2021-12-21 16:51:47,743 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_remove [2021-12-21 16:51:47,743 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_remove [2021-12-21 16:51:47,743 INFO L130 BoogieDeclarations]: Found specification of procedure dma_zalloc_coherent [2021-12-21 16:51:47,743 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_zalloc_coherent [2021-12-21 16:51:47,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 16:51:47,744 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-21 16:51:47,744 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-21 16:51:47,744 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_udc_stop [2021-12-21 16:51:47,744 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_udc_stop [2021-12-21 16:51:47,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 16:51:47,744 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-12-21 16:51:47,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-12-21 16:51:47,745 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-21 16:51:47,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-21 16:51:47,745 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_isoc [2021-12-21 16:51:47,745 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_isoc [2021-12-21 16:51:47,745 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-21 16:51:47,745 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-21 16:51:47,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 16:51:47,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-21 16:51:47,746 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_free_ep [2021-12-21 16:51:47,746 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_free_ep [2021-12-21 16:51:47,746 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_notify_xfr [2021-12-21 16:51:47,746 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_notify_xfr [2021-12-21 16:51:47,746 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-12-21 16:51:47,746 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-12-21 16:51:47,746 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-21 16:51:47,746 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-21 16:51:47,747 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_stop_ep [2021-12-21 16:51:47,747 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_stop_ep [2021-12-21 16:51:47,747 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-21 16:51:47,747 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-21 16:51:47,747 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_ep_set_stall [2021-12-21 16:51:47,747 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_ep_set_stall [2021-12-21 16:51:47,747 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-21 16:51:47,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-21 16:51:47,748 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_map_request [2021-12-21 16:51:47,748 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_map_request [2021-12-21 16:51:47,748 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_mem_free [2021-12-21 16:51:47,748 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_mem_free [2021-12-21 16:51:47,748 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_dbg_bd_list [2021-12-21 16:51:47,748 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_dbg_bd_list [2021-12-21 16:51:47,748 INFO L130 BoogieDeclarations]: Found specification of procedure ep_set_halt [2021-12-21 16:51:47,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ep_set_halt [2021-12-21 16:51:47,748 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-12-21 16:51:47,748 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-12-21 16:51:47,749 INFO L130 BoogieDeclarations]: Found specification of procedure bdi_to_tbi [2021-12-21 16:51:47,749 INFO L138 BoogieDeclarations]: Found implementation of procedure bdi_to_tbi [2021-12-21 16:51:47,749 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-12-21 16:51:47,749 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-12-21 16:51:47,749 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 16:51:47,749 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_mem_init [2021-12-21 16:51:47,749 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_mem_init [2021-12-21 16:51:47,749 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_config_ep [2021-12-21 16:51:47,749 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_config_ep [2021-12-21 16:51:47,750 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_gadget_ep_enable [2021-12-21 16:51:47,750 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_gadget_ep_enable [2021-12-21 16:51:47,750 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_queue_xfr [2021-12-21 16:51:47,750 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_queue_xfr [2021-12-21 16:51:47,750 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_hw_exit [2021-12-21 16:51:47,750 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_hw_exit [2021-12-21 16:51:47,750 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-21 16:51:47,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-21 16:51:47,751 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-21 16:51:47,751 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-21 16:51:47,751 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_gadget_ep_disable [2021-12-21 16:51:47,751 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_gadget_ep_disable [2021-12-21 16:51:47,751 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-12-21 16:51:47,751 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-12-21 16:51:47,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 16:51:47,751 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-21 16:51:47,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-21 16:51:47,752 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-21 16:51:47,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-21 16:51:47,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 16:51:47,752 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_calloc [2021-12-21 16:51:47,752 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-21 16:51:47,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-21 16:51:47,752 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_mask_and_coherent [2021-12-21 16:51:47,752 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_mask_and_coherent [2021-12-21 16:51:47,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 16:51:47,753 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_gadget_ep_dequeue [2021-12-21 16:51:47,753 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_gadget_ep_dequeue [2021-12-21 16:51:47,753 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_set_state [2021-12-21 16:51:47,753 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_set_state [2021-12-21 16:51:47,753 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-21 16:51:47,753 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-21 16:51:47,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 16:51:47,753 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_udc_start [2021-12-21 16:51:47,753 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_udc_start [2021-12-21 16:51:47,753 INFO L130 BoogieDeclarations]: Found specification of procedure poll_oip [2021-12-21 16:51:47,754 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_oip [2021-12-21 16:51:47,754 INFO L130 BoogieDeclarations]: Found specification of procedure ___ratelimit [2021-12-21 16:51:47,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ___ratelimit [2021-12-21 16:51:47,754 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_stop [2021-12-21 16:51:47,754 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_stop [2021-12-21 16:51:47,754 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_softconn [2021-12-21 16:51:47,754 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_softconn [2021-12-21 16:51:47,754 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_run [2021-12-21 16:51:47,754 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_run [2021-12-21 16:51:47,755 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_set_maxpacket_limit [2021-12-21 16:51:47,755 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_set_maxpacket_limit [2021-12-21 16:51:47,755 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_submit_cmd [2021-12-21 16:51:47,755 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_submit_cmd [2021-12-21 16:51:47,755 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_udc_wakeup [2021-12-21 16:51:47,755 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_udc_wakeup [2021-12-21 16:51:47,755 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-21 16:51:47,755 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-21 16:51:47,755 INFO L130 BoogieDeclarations]: Found specification of procedure find_end_bdi [2021-12-21 16:51:47,756 INFO L138 BoogieDeclarations]: Found implementation of procedure find_end_bdi [2021-12-21 16:51:47,756 INFO L130 BoogieDeclarations]: Found specification of procedure bdi_to_bd [2021-12-21 16:51:47,756 INFO L138 BoogieDeclarations]: Found implementation of procedure bdi_to_bd [2021-12-21 16:51:47,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 16:51:47,756 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_writel [2021-12-21 16:51:47,756 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_writel [2021-12-21 16:51:47,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 16:51:47,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 16:51:47,756 INFO L130 BoogieDeclarations]: Found specification of procedure chain_table [2021-12-21 16:51:47,756 INFO L138 BoogieDeclarations]: Found implementation of procedure chain_table [2021-12-21 16:51:47,757 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_readl [2021-12-21 16:51:47,757 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_readl [2021-12-21 16:51:47,757 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_ep_enable [2021-12-21 16:51:47,757 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_ep_enable [2021-12-21 16:51:47,757 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-21 16:51:47,757 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-21 16:51:47,757 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_probe [2021-12-21 16:51:47,757 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_probe [2021-12-21 16:51:48,220 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 16:51:48,222 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 16:51:49,090 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-21 16:51:55,574 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 16:51:55,597 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 16:51:55,597 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 16:51:55,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:51:55 BoogieIcfgContainer [2021-12-21 16:51:55,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 16:51:55,601 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 16:51:55,601 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 16:51:55,604 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 16:51:55,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 04:51:44" (1/3) ... [2021-12-21 16:51:55,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9080e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:51:55, skipping insertion in model container [2021-12-21 16:51:55,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:51:47" (2/3) ... [2021-12-21 16:51:55,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9080e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:51:55, skipping insertion in model container [2021-12-21 16:51:55,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:51:55" (3/3) ... [2021-12-21 16:51:55,607 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 [2021-12-21 16:51:55,610 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 16:51:55,610 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 16:51:55,644 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 16:51:55,649 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 [2021-12-21 16:51:55,649 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 16:51:55,731 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) [2021-12-21 16:51:55,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-21 16:51:55,739 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:51:55,740 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] [2021-12-21 16:51:55,741 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:51:55,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:51:55,745 INFO L85 PathProgramCache]: Analyzing trace with hash 2139334231, now seen corresponding path program 1 times [2021-12-21 16:51:55,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:51:55,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286768439] [2021-12-21 16:51:55,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:51:55,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:51:56,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:51:56,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 16:51:56,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:51:56,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:51:56,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:51:56,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:51:56,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:51:56,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 16:51:56,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:51:56,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:51:56,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:51:56,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-21 16:51:56,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:51:56,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:51:56,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:51:56,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 16:51:56,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:51:56,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:51:56,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:51:56,438 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-21 16:51:56,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:51:56,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286768439] [2021-12-21 16:51:56,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286768439] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:51:56,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:51:56,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 16:51:56,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301898822] [2021-12-21 16:51:56,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:51:56,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 16:51:56,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:51:56,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 16:51:56,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-21 16:51:56,465 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) [2021-12-21 16:52:00,868 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 [] [2021-12-21 16:52:04,271 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 [] [2021-12-21 16:52:05,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:52:05,983 INFO L93 Difference]: Finished difference Result 4012 states and 5742 transitions. [2021-12-21 16:52:05,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 16:52:05,986 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 [2021-12-21 16:52:05,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:52:06,012 INFO L225 Difference]: With dead ends: 4012 [2021-12-21 16:52:06,012 INFO L226 Difference]: Without dead ends: 2530 [2021-12-21 16:52:06,025 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 [2021-12-21 16:52:06,027 INFO L933 BasicCegarLoop]: 2281 mSDtfsCounter, 1909 mSDsluCounter, 2971 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 1984 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2113 SdHoareTripleChecker+Valid, 5252 SdHoareTripleChecker+Invalid, 3089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1984 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2021-12-21 16:52:06,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2113 Valid, 5252 Invalid, 3089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1984 Valid, 1103 Invalid, 2 Unknown, 0 Unchecked, 9.2s Time] [2021-12-21 16:52:06,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2530 states. [2021-12-21 16:52:06,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2530 to 2466. [2021-12-21 16:52:06,284 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) [2021-12-21 16:52:06,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 3464 transitions. [2021-12-21 16:52:06,301 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 3464 transitions. Word has length 72 [2021-12-21 16:52:06,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:52:06,301 INFO L470 AbstractCegarLoop]: Abstraction has 2466 states and 3464 transitions. [2021-12-21 16:52:06,302 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) [2021-12-21 16:52:06,302 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 3464 transitions. [2021-12-21 16:52:06,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-21 16:52:06,317 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:52:06,317 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] [2021-12-21 16:52:06,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 16:52:06,318 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:52:06,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:52:06,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1055536844, now seen corresponding path program 1 times [2021-12-21 16:52:06,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:52:06,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054834080] [2021-12-21 16:52:06,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:52:06,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:52:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:06,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 16:52:06,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:06,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:06,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:06,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:52:06,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:06,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-21 16:52:06,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:06,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:06,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:06,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:52:06,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:06,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 16:52:06,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:06,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:06,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:06,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:52:06,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:06,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 16:52:06,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:06,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:06,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:06,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:52:06,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:06,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-21 16:52:06,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:06,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:06,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:06,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:52:06,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:06,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-21 16:52:06,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:06,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:06,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:06,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-21 16:52:06,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:06,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:06,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:06,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-21 16:52:06,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:06,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:06,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:06,857 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-12-21 16:52:06,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:52:06,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054834080] [2021-12-21 16:52:06,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054834080] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:52:06,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:52:06,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 16:52:06,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405749363] [2021-12-21 16:52:06,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:52:06,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 16:52:06,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:52:06,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 16:52:06,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-21 16:52:06,864 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) [2021-12-21 16:52:10,439 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 [] [2021-12-21 16:52:14,007 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 [] [2021-12-21 16:52:16,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:52:16,610 INFO L93 Difference]: Finished difference Result 4526 states and 6404 transitions. [2021-12-21 16:52:16,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 16:52:16,611 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 [2021-12-21 16:52:16,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:52:16,643 INFO L225 Difference]: With dead ends: 4526 [2021-12-21 16:52:16,644 INFO L226 Difference]: Without dead ends: 4523 [2021-12-21 16:52:16,649 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 [2021-12-21 16:52:16,650 INFO L933 BasicCegarLoop]: 2385 mSDtfsCounter, 1908 mSDsluCounter, 3032 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 1897 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2097 SdHoareTripleChecker+Valid, 5417 SdHoareTripleChecker+Invalid, 2981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1897 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2021-12-21 16:52:16,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2097 Valid, 5417 Invalid, 2981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1897 Valid, 1082 Invalid, 2 Unknown, 0 Unchecked, 9.5s Time] [2021-12-21 16:52:16,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4523 states. [2021-12-21 16:52:16,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4523 to 4379. [2021-12-21 16:52:16,932 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) [2021-12-21 16:52:16,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4379 states to 4379 states and 6153 transitions. [2021-12-21 16:52:16,952 INFO L78 Accepts]: Start accepts. Automaton has 4379 states and 6153 transitions. Word has length 152 [2021-12-21 16:52:16,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:52:16,954 INFO L470 AbstractCegarLoop]: Abstraction has 4379 states and 6153 transitions. [2021-12-21 16:52:16,954 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) [2021-12-21 16:52:16,955 INFO L276 IsEmpty]: Start isEmpty. Operand 4379 states and 6153 transitions. [2021-12-21 16:52:16,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-12-21 16:52:16,966 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:52:16,967 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] [2021-12-21 16:52:16,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 16:52:16,967 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:52:16,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:52:16,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1344442639, now seen corresponding path program 1 times [2021-12-21 16:52:16,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:52:16,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096418397] [2021-12-21 16:52:16,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:52:16,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:52:17,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:17,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 16:52:17,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:17,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:17,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:17,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:52:17,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:17,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-21 16:52:17,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:17,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:17,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:17,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:52:17,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:17,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 16:52:17,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:17,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:17,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:17,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:52:17,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:17,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 16:52:17,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:17,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:17,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:17,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:52:17,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:17,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-21 16:52:17,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:17,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:17,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:52:17,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:17,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-21 16:52:17,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:17,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:17,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:17,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-21 16:52:17,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:17,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:17,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:17,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-21 16:52:17,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:17,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:17,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:17,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-21 16:52:17,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:17,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-21 16:52:17,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:17,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-21 16:52:17,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:17,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-21 16:52:17,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:17,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-12-21 16:52:17,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:17,434 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-12-21 16:52:17,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:52:17,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096418397] [2021-12-21 16:52:17,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096418397] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:52:17,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:52:17,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 16:52:17,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183985437] [2021-12-21 16:52:17,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:52:17,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 16:52:17,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:52:17,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 16:52:17,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-21 16:52:17,439 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) [2021-12-21 16:52:22,018 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 [] [2021-12-21 16:52:24,056 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:52:26,081 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:52:33,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:52:33,253 INFO L93 Difference]: Finished difference Result 8925 states and 12587 transitions. [2021-12-21 16:52:33,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 16:52:33,254 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 [2021-12-21 16:52:33,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:52:33,274 INFO L225 Difference]: With dead ends: 8925 [2021-12-21 16:52:33,274 INFO L226 Difference]: Without dead ends: 4550 [2021-12-21 16:52:33,288 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 [2021-12-21 16:52:33,289 INFO L933 BasicCegarLoop]: 1721 mSDtfsCounter, 1253 mSDsluCounter, 2013 mSDsCounter, 0 mSdLazyCounter, 3997 mSolverCounterSat, 1189 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 3734 SdHoareTripleChecker+Invalid, 5189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1189 IncrementalHoareTripleChecker+Valid, 3997 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2021-12-21 16:52:33,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1510 Valid, 3734 Invalid, 5189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1189 Valid, 3997 Invalid, 3 Unknown, 0 Unchecked, 15.5s Time] [2021-12-21 16:52:33,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4550 states. [2021-12-21 16:52:33,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4550 to 4441. [2021-12-21 16:52:33,401 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) [2021-12-21 16:52:33,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4441 states to 4441 states and 6244 transitions. [2021-12-21 16:52:33,415 INFO L78 Accepts]: Start accepts. Automaton has 4441 states and 6244 transitions. Word has length 194 [2021-12-21 16:52:33,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:52:33,416 INFO L470 AbstractCegarLoop]: Abstraction has 4441 states and 6244 transitions. [2021-12-21 16:52:33,416 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) [2021-12-21 16:52:33,417 INFO L276 IsEmpty]: Start isEmpty. Operand 4441 states and 6244 transitions. [2021-12-21 16:52:33,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-12-21 16:52:33,428 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:52:33,428 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] [2021-12-21 16:52:33,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 16:52:33,428 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:52:33,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:52:33,429 INFO L85 PathProgramCache]: Analyzing trace with hash 583830063, now seen corresponding path program 1 times [2021-12-21 16:52:33,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:52:33,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180868372] [2021-12-21 16:52:33,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:52:33,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:52:33,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:33,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 16:52:33,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:33,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:33,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:33,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:52:33,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:33,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-21 16:52:33,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:33,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:33,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:33,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:52:33,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:33,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 16:52:33,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:33,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:33,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:33,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:52:33,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:33,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 16:52:33,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:33,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:33,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:33,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:52:33,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:33,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-21 16:52:33,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:33,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:33,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:33,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:52:33,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:33,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-21 16:52:33,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:33,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:33,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:33,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-21 16:52:33,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:33,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:33,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:33,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-21 16:52:33,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:33,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:33,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:33,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-21 16:52:33,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:33,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-21 16:52:33,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:33,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-21 16:52:33,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:33,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-21 16:52:33,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:33,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-12-21 16:52:33,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:33,831 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-12-21 16:52:33,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:52:33,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180868372] [2021-12-21 16:52:33,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180868372] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:52:33,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:52:33,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 16:52:33,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526900948] [2021-12-21 16:52:33,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:52:33,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 16:52:33,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:52:33,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 16:52:33,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-21 16:52:33,833 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) [2021-12-21 16:52:39,747 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:52:41,786 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:52:43,823 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []