./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 839c364b 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 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 18:24:13,951 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 18:24:13,952 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 18:24:13,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 18:24:13,973 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 18:24:13,974 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 18:24:13,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 18:24:13,976 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 18:24:13,977 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 18:24:13,977 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 18:24:13,978 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 18:24:13,979 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 18:24:13,979 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 18:24:13,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 18:24:13,981 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 18:24:13,982 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 18:24:13,982 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 18:24:13,983 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 18:24:13,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 18:24:13,985 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 18:24:13,986 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 18:24:13,987 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 18:24:13,987 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 18:24:13,988 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 18:24:13,990 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 18:24:13,990 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 18:24:13,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 18:24:13,991 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 18:24:13,991 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 18:24:13,992 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 18:24:13,992 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 18:24:13,993 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 18:24:13,993 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 18:24:13,994 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 18:24:13,994 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 18:24:13,995 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 18:24:13,995 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 18:24:13,995 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 18:24:13,995 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 18:24:13,996 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 18:24:13,996 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 18:24:13,999 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 18:24:14,013 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 18:24:14,013 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 18:24:14,013 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 18:24:14,014 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 18:24:14,014 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 18:24:14,014 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 18:24:14,015 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 18:24:14,015 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 18:24:14,015 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 18:24:14,015 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 18:24:14,015 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 18:24:14,016 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 18:24:14,016 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 18:24:14,016 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 18:24:14,016 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 18:24:14,016 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 18:24:14,016 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 18:24:14,016 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 18:24:14,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 18:24:14,017 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 18:24:14,017 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 18:24:14,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 18:24:14,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 18:24:14,017 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 18:24:14,017 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 18:24:14,017 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 18:24:14,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 18:24:14,018 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 18:24:14,018 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 18:24:14,018 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 18:24:14,018 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 18:24:14,018 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f9061bc17f5b81d8b71557fcfcad78d4aeee3eb70f5055a497a3bfac3b14ddef [2021-12-14 18:24:14,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 18:24:14,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 18:24:14,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 18:24:14,306 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 18:24:14,307 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 18:24:14,308 INFO L432 ainManager$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 [2021-12-14 18:24:14,367 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/163422172/b59d54f983dc4ad0938ce0d4c7543a81/FLAG35d67e7a6 [2021-12-14 18:24:14,985 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 18:24:14,986 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 [2021-12-14 18:24:15,025 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/163422172/b59d54f983dc4ad0938ce0d4c7543a81/FLAG35d67e7a6 [2021-12-14 18:24:15,381 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/163422172/b59d54f983dc4ad0938ce0d4c7543a81 [2021-12-14 18:24:15,383 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 18:24:15,385 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 18:24:15,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 18:24:15,389 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 18:24:15,391 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 18:24:15,391 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:24:15" (1/1) ... [2021-12-14 18:24:15,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e9257f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:24:15, skipping insertion in model container [2021-12-14 18:24:15,392 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:24:15" (1/1) ... [2021-12-14 18:24:15,397 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 18:24:15,541 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 18:24:17,108 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] [2021-12-14 18:24:17,142 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 18:24:17,162 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 18:24:17,461 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] [2021-12-14 18:24:17,464 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 18:24:17,517 INFO L208 MainTranslator]: Completed translation [2021-12-14 18:24:17,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:24:17 WrapperNode [2021-12-14 18:24:17,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 18:24:17,520 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 18:24:17,520 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 18:24:17,520 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 18:24:17,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:24:17" (1/1) ... [2021-12-14 18:24:17,620 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:24:17" (1/1) ... [2021-12-14 18:24:17,791 INFO L137 Inliner]: procedures = 274, calls = 5784, calls flagged for inlining = 107, calls inlined = 80, statements flattened = 6383 [2021-12-14 18:24:17,792 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 18:24:17,793 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 18:24:17,793 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 18:24:17,793 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 18:24:17,799 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:24:17" (1/1) ... [2021-12-14 18:24:17,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:24:17" (1/1) ... [2021-12-14 18:24:17,834 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:24:17" (1/1) ... [2021-12-14 18:24:17,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:24:17" (1/1) ... [2021-12-14 18:24:18,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:24:17" (1/1) ... [2021-12-14 18:24:18,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:24:17" (1/1) ... [2021-12-14 18:24:18,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:24:17" (1/1) ... [2021-12-14 18:24:18,147 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 18:24:18,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 18:24:18,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 18:24:18,157 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 18:24:18,158 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:24:17" (1/1) ... [2021-12-14 18:24:18,163 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 18:24:18,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 18:24:18,190 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) [2021-12-14 18:24:18,206 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 [2021-12-14 18:24:18,224 INFO L130 BoogieDeclarations]: Found specification of procedure ep0_queue_status_stage [2021-12-14 18:24:18,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ep0_queue_status_stage [2021-12-14 18:24:18,225 INFO L130 BoogieDeclarations]: Found specification of procedure ep0_queue [2021-12-14 18:24:18,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ep0_queue [2021-12-14 18:24:18,225 INFO L130 BoogieDeclarations]: Found specification of procedure ep_bd_list_free [2021-12-14 18:24:18,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ep_bd_list_free [2021-12-14 18:24:18,225 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-14 18:24:18,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-14 18:24:18,226 INFO L130 BoogieDeclarations]: Found specification of procedure init_ep [2021-12-14 18:24:18,226 INFO L138 BoogieDeclarations]: Found implementation of procedure init_ep [2021-12-14 18:24:18,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-14 18:24:18,226 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-14 18:24:18,226 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2021-12-14 18:24:18,226 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2021-12-14 18:24:18,226 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-12-14 18:24:18,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-12-14 18:24:18,227 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_reset [2021-12-14 18:24:18,227 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_reset [2021-12-14 18:24:18,227 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 18:24:18,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 18:24:18,227 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2021-12-14 18:24:18,227 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2021-12-14 18:24:18,227 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_ep_disable [2021-12-14 18:24:18,227 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_ep_disable [2021-12-14 18:24:18,228 INFO L130 BoogieDeclarations]: Found specification of procedure usb_del_gadget_udc [2021-12-14 18:24:18,228 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_del_gadget_udc [2021-12-14 18:24:18,228 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 18:24:18,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 18:24:18,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-14 18:24:18,228 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-14 18:24:18,228 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_type [2021-12-14 18:24:18,228 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_type [2021-12-14 18:24:18,229 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 18:24:18,229 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 18:24:18,229 INFO L130 BoogieDeclarations]: Found specification of procedure fls [2021-12-14 18:24:18,229 INFO L138 BoogieDeclarations]: Found implementation of procedure fls [2021-12-14 18:24:18,229 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_req_complete [2021-12-14 18:24:18,229 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_req_complete [2021-12-14 18:24:18,229 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_gadget_free_request [2021-12-14 18:24:18,229 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_gadget_free_request [2021-12-14 18:24:18,230 INFO L130 BoogieDeclarations]: Found specification of procedure bd_add_to_bdi [2021-12-14 18:24:18,230 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_add_to_bdi [2021-12-14 18:24:18,230 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_remove [2021-12-14 18:24:18,230 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_remove [2021-12-14 18:24:18,230 INFO L130 BoogieDeclarations]: Found specification of procedure dma_zalloc_coherent [2021-12-14 18:24:18,230 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_zalloc_coherent [2021-12-14 18:24:18,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 18:24:18,230 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-14 18:24:18,231 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-14 18:24:18,231 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_udc_stop [2021-12-14 18:24:18,231 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_udc_stop [2021-12-14 18:24:18,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 18:24:18,231 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-12-14 18:24:18,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-12-14 18:24:18,231 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-14 18:24:18,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-14 18:24:18,232 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_isoc [2021-12-14 18:24:18,232 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_isoc [2021-12-14 18:24:18,232 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-14 18:24:18,232 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-14 18:24:18,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 18:24:18,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 18:24:18,232 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_free_ep [2021-12-14 18:24:18,232 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_free_ep [2021-12-14 18:24:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_notify_xfr [2021-12-14 18:24:18,233 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_notify_xfr [2021-12-14 18:24:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-12-14 18:24:18,233 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-12-14 18:24:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-14 18:24:18,233 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-14 18:24:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_stop_ep [2021-12-14 18:24:18,233 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_stop_ep [2021-12-14 18:24:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-14 18:24:18,234 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-14 18:24:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_ep_set_stall [2021-12-14 18:24:18,234 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_ep_set_stall [2021-12-14 18:24:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-14 18:24:18,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-14 18:24:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_map_request [2021-12-14 18:24:18,234 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_map_request [2021-12-14 18:24:18,235 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_mem_free [2021-12-14 18:24:18,235 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_mem_free [2021-12-14 18:24:18,235 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_dbg_bd_list [2021-12-14 18:24:18,235 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_dbg_bd_list [2021-12-14 18:24:18,235 INFO L130 BoogieDeclarations]: Found specification of procedure ep_set_halt [2021-12-14 18:24:18,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ep_set_halt [2021-12-14 18:24:18,235 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-12-14 18:24:18,235 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-12-14 18:24:18,236 INFO L130 BoogieDeclarations]: Found specification of procedure bdi_to_tbi [2021-12-14 18:24:18,236 INFO L138 BoogieDeclarations]: Found implementation of procedure bdi_to_tbi [2021-12-14 18:24:18,236 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-12-14 18:24:18,236 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-12-14 18:24:18,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 18:24:18,236 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_mem_init [2021-12-14 18:24:18,236 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_mem_init [2021-12-14 18:24:18,236 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_config_ep [2021-12-14 18:24:18,237 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_config_ep [2021-12-14 18:24:18,237 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_gadget_ep_enable [2021-12-14 18:24:18,237 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_gadget_ep_enable [2021-12-14 18:24:18,237 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_queue_xfr [2021-12-14 18:24:18,237 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_queue_xfr [2021-12-14 18:24:18,237 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_hw_exit [2021-12-14 18:24:18,237 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_hw_exit [2021-12-14 18:24:18,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-14 18:24:18,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-14 18:24:18,238 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-14 18:24:18,238 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-14 18:24:18,238 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_gadget_ep_disable [2021-12-14 18:24:18,238 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_gadget_ep_disable [2021-12-14 18:24:18,238 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-12-14 18:24:18,238 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-12-14 18:24:18,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 18:24:18,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 18:24:18,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 18:24:18,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-14 18:24:18,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-14 18:24:18,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 18:24:18,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_calloc [2021-12-14 18:24:18,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-14 18:24:18,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-14 18:24:18,239 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_mask_and_coherent [2021-12-14 18:24:18,240 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_mask_and_coherent [2021-12-14 18:24:18,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 18:24:18,240 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_gadget_ep_dequeue [2021-12-14 18:24:18,240 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_gadget_ep_dequeue [2021-12-14 18:24:18,240 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_set_state [2021-12-14 18:24:18,240 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_set_state [2021-12-14 18:24:18,240 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-14 18:24:18,241 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-14 18:24:18,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 18:24:18,241 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_udc_start [2021-12-14 18:24:18,241 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_udc_start [2021-12-14 18:24:18,241 INFO L130 BoogieDeclarations]: Found specification of procedure poll_oip [2021-12-14 18:24:18,241 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_oip [2021-12-14 18:24:18,241 INFO L130 BoogieDeclarations]: Found specification of procedure ___ratelimit [2021-12-14 18:24:18,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ___ratelimit [2021-12-14 18:24:18,242 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_stop [2021-12-14 18:24:18,242 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_stop [2021-12-14 18:24:18,242 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_softconn [2021-12-14 18:24:18,242 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_softconn [2021-12-14 18:24:18,242 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_run [2021-12-14 18:24:18,242 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_run [2021-12-14 18:24:18,242 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_set_maxpacket_limit [2021-12-14 18:24:18,242 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_set_maxpacket_limit [2021-12-14 18:24:18,242 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_submit_cmd [2021-12-14 18:24:18,243 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_submit_cmd [2021-12-14 18:24:18,243 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_udc_wakeup [2021-12-14 18:24:18,243 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_udc_wakeup [2021-12-14 18:24:18,243 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-14 18:24:18,243 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-14 18:24:18,243 INFO L130 BoogieDeclarations]: Found specification of procedure find_end_bdi [2021-12-14 18:24:18,243 INFO L138 BoogieDeclarations]: Found implementation of procedure find_end_bdi [2021-12-14 18:24:18,243 INFO L130 BoogieDeclarations]: Found specification of procedure bdi_to_bd [2021-12-14 18:24:18,244 INFO L138 BoogieDeclarations]: Found implementation of procedure bdi_to_bd [2021-12-14 18:24:18,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 18:24:18,244 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_writel [2021-12-14 18:24:18,244 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_writel [2021-12-14 18:24:18,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 18:24:18,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 18:24:18,244 INFO L130 BoogieDeclarations]: Found specification of procedure chain_table [2021-12-14 18:24:18,244 INFO L138 BoogieDeclarations]: Found implementation of procedure chain_table [2021-12-14 18:24:18,244 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_readl [2021-12-14 18:24:18,245 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_readl [2021-12-14 18:24:18,245 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_ep_enable [2021-12-14 18:24:18,245 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_ep_enable [2021-12-14 18:24:18,245 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-14 18:24:18,245 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-14 18:24:18,245 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_probe [2021-12-14 18:24:18,245 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_probe [2021-12-14 18:24:18,712 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 18:24:18,714 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 18:24:20,091 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-14 18:24:26,790 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 18:24:26,815 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 18:24:26,815 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 18:24:26,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:24:26 BoogieIcfgContainer [2021-12-14 18:24:26,819 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 18:24:26,821 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 18:24:26,821 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 18:24:26,823 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 18:24:26,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:24:15" (1/3) ... [2021-12-14 18:24:26,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d8af467 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:24:26, skipping insertion in model container [2021-12-14 18:24:26,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:24:17" (2/3) ... [2021-12-14 18:24:26,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d8af467 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:24:26, skipping insertion in model container [2021-12-14 18:24:26,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:24:26" (3/3) ... [2021-12-14 18:24:26,827 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 [2021-12-14 18:24:26,830 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 18:24:26,830 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 18:24:26,871 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 18:24:26,876 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 [2021-12-14 18:24:26,876 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 18:24:26,907 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) [2021-12-14 18:24:26,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-14 18:24:26,917 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:24:26,918 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] [2021-12-14 18:24:26,918 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:24:26,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:24:26,922 INFO L85 PathProgramCache]: Analyzing trace with hash 2139334231, now seen corresponding path program 1 times [2021-12-14 18:24:26,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:24:26,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313160844] [2021-12-14 18:24:26,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:24:26,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:24:27,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:27,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 18:24:27,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:27,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:24:27,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:27,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:24:27,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:27,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 18:24:27,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:27,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:24:27,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:27,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-14 18:24:27,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:27,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:24:27,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:27,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 18:24:27,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:27,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:24:27,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:27,541 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-14 18:24:27,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:24:27,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313160844] [2021-12-14 18:24:27,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313160844] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:24:27,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:24:27,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 18:24:27,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359987098] [2021-12-14 18:24:27,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:24:27,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 18:24:27,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:24:27,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 18:24:27,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 18:24:27,568 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) [2021-12-14 18:24:31,683 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 [] [2021-12-14 18:24:35,241 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 [] [2021-12-14 18:24:36,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:24:36,764 INFO L93 Difference]: Finished difference Result 4012 states and 5742 transitions. [2021-12-14 18:24:36,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 18:24:36,767 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 [2021-12-14 18:24:36,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:24:36,817 INFO L225 Difference]: With dead ends: 4012 [2021-12-14 18:24:36,818 INFO L226 Difference]: Without dead ends: 2530 [2021-12-14 18:24:36,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-14 18:24:36,850 INFO L933 BasicCegarLoop]: 2279 mSDtfsCounter, 1909 mSDsluCounter, 2967 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 1984 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2113 SdHoareTripleChecker+Valid, 5246 SdHoareTripleChecker+Invalid, 3089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1984 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2021-12-14 18:24:36,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2113 Valid, 5246 Invalid, 3089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1984 Valid, 1103 Invalid, 2 Unknown, 0 Unchecked, 8.9s Time] [2021-12-14 18:24:36,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2530 states. [2021-12-14 18:24:37,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2530 to 2466. [2021-12-14 18:24:37,168 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) [2021-12-14 18:24:37,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 3464 transitions. [2021-12-14 18:24:37,183 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 3464 transitions. Word has length 72 [2021-12-14 18:24:37,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:24:37,183 INFO L470 AbstractCegarLoop]: Abstraction has 2466 states and 3464 transitions. [2021-12-14 18:24:37,184 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) [2021-12-14 18:24:37,184 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 3464 transitions. [2021-12-14 18:24:37,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-14 18:24:37,200 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:24:37,201 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] [2021-12-14 18:24:37,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 18:24:37,201 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:24:37,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:24:37,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1055536844, now seen corresponding path program 1 times [2021-12-14 18:24:37,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:24:37,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685596130] [2021-12-14 18:24:37,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:24:37,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:24:37,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:37,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-14 18:24:37,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:37,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:24:37,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:37,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:24:37,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:37,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:24:37,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:37,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:24:37,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:37,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:24:37,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:37,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 18:24:37,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:37,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:24:37,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:37,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:24:37,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:37,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-14 18:24:37,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:37,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:24:37,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:37,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:24:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:37,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-14 18:24:37,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:37,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:24:37,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:37,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:24:37,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:37,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 18:24:37,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:37,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:24:37,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:37,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-14 18:24:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:37,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:24:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:37,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-14 18:24:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:37,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:24:37,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:37,709 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-12-14 18:24:37,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:24:37,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685596130] [2021-12-14 18:24:37,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685596130] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:24:37,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:24:37,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 18:24:37,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355633171] [2021-12-14 18:24:37,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:24:37,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 18:24:37,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:24:37,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 18:24:37,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 18:24:37,712 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) [2021-12-14 18:24:41,246 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 [] [2021-12-14 18:24:44,811 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 [] [2021-12-14 18:24:47,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:24:47,660 INFO L93 Difference]: Finished difference Result 4526 states and 6404 transitions. [2021-12-14 18:24:47,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 18:24:47,660 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 [2021-12-14 18:24:47,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:24:47,681 INFO L225 Difference]: With dead ends: 4526 [2021-12-14 18:24:47,686 INFO L226 Difference]: Without dead ends: 4523 [2021-12-14 18:24:47,690 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 [2021-12-14 18:24:47,704 INFO L933 BasicCegarLoop]: 2384 mSDtfsCounter, 1908 mSDsluCounter, 3029 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 1897 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2096 SdHoareTripleChecker+Valid, 5413 SdHoareTripleChecker+Invalid, 2981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1897 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2021-12-14 18:24:47,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2096 Valid, 5413 Invalid, 2981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1897 Valid, 1082 Invalid, 2 Unknown, 0 Unchecked, 9.7s Time] [2021-12-14 18:24:47,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4523 states. [2021-12-14 18:24:47,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4523 to 4379. [2021-12-14 18:24:47,906 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) [2021-12-14 18:24:47,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4379 states to 4379 states and 6153 transitions. [2021-12-14 18:24:47,923 INFO L78 Accepts]: Start accepts. Automaton has 4379 states and 6153 transitions. Word has length 152 [2021-12-14 18:24:47,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:24:47,925 INFO L470 AbstractCegarLoop]: Abstraction has 4379 states and 6153 transitions. [2021-12-14 18:24:47,925 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) [2021-12-14 18:24:47,925 INFO L276 IsEmpty]: Start isEmpty. Operand 4379 states and 6153 transitions. [2021-12-14 18:24:47,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-12-14 18:24:47,935 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:24:47,935 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] [2021-12-14 18:24:47,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 18:24:47,935 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:24:47,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:24:47,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1344442639, now seen corresponding path program 1 times [2021-12-14 18:24:47,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:24:47,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301311312] [2021-12-14 18:24:47,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:24:47,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:24:48,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:48,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-14 18:24:48,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:48,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:24:48,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:48,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:24:48,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:48,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:24:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:48,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:24:48,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:48,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:24:48,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:48,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 18:24:48,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:48,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:24:48,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:48,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:24:48,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:48,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-14 18:24:48,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:48,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:24:48,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:48,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:24:48,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:48,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-14 18:24:48,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:48,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:24:48,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:48,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:24:48,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:48,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 18:24:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:48,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:24:48,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:48,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-14 18:24:48,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:48,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:24:48,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:48,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-14 18:24:48,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:48,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:24:48,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:48,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-14 18:24:48,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:48,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-14 18:24:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:48,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-14 18:24:48,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:48,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-14 18:24:48,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:48,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-12-14 18:24:48,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:24:48,465 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-12-14 18:24:48,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:24:48,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301311312] [2021-12-14 18:24:48,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301311312] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:24:48,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:24:48,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 18:24:48,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103915060] [2021-12-14 18:24:48,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:24:48,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 18:24:48,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:24:48,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 18:24:48,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-14 18:24:48,468 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) [2021-12-14 18:24:52,988 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 [] [2021-12-14 18:24:55,021 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:24:57,058 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:25:03,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:25:03,522 INFO L93 Difference]: Finished difference Result 8925 states and 12587 transitions. [2021-12-14 18:25:03,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 18:25:03,522 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 [2021-12-14 18:25:03,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:25:03,545 INFO L225 Difference]: With dead ends: 8925 [2021-12-14 18:25:03,545 INFO L226 Difference]: Without dead ends: 4550 [2021-12-14 18:25:03,560 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 [2021-12-14 18:25:03,561 INFO L933 BasicCegarLoop]: 1721 mSDtfsCounter, 1253 mSDsluCounter, 2013 mSDsCounter, 0 mSdLazyCounter, 4001 mSolverCounterSat, 1189 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1509 SdHoareTripleChecker+Valid, 3734 SdHoareTripleChecker+Invalid, 5193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1189 IncrementalHoareTripleChecker+Valid, 4001 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2021-12-14 18:25:03,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1509 Valid, 3734 Invalid, 5193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1189 Valid, 4001 Invalid, 3 Unknown, 0 Unchecked, 14.7s Time] [2021-12-14 18:25:03,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4550 states. [2021-12-14 18:25:03,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4550 to 4441. [2021-12-14 18:25:03,684 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) [2021-12-14 18:25:03,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4441 states to 4441 states and 6244 transitions. [2021-12-14 18:25:03,697 INFO L78 Accepts]: Start accepts. Automaton has 4441 states and 6244 transitions. Word has length 194 [2021-12-14 18:25:03,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:25:03,698 INFO L470 AbstractCegarLoop]: Abstraction has 4441 states and 6244 transitions. [2021-12-14 18:25:03,698 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) [2021-12-14 18:25:03,698 INFO L276 IsEmpty]: Start isEmpty. Operand 4441 states and 6244 transitions. [2021-12-14 18:25:03,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-12-14 18:25:03,704 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:25:03,704 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] [2021-12-14 18:25:03,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 18:25:03,705 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:25:03,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:25:03,705 INFO L85 PathProgramCache]: Analyzing trace with hash 583830063, now seen corresponding path program 1 times [2021-12-14 18:25:03,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:25:03,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983554778] [2021-12-14 18:25:03,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:25:03,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:25:03,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:03,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-14 18:25:03,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:03,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:25:03,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:03,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:25:03,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:03,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:25:03,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:03,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:25:03,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:03,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:25:03,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:03,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 18:25:03,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:03,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:25:03,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:03,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:25:03,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:04,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-14 18:25:04,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:04,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:25:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:04,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:25:04,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:04,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-14 18:25:04,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:04,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:25:04,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:04,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:25:04,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:04,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 18:25:04,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:04,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:25:04,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:04,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-14 18:25:04,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:04,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:25:04,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:04,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-14 18:25:04,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:04,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:25:04,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:04,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-14 18:25:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:04,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-14 18:25:04,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:04,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-14 18:25:04,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:04,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-14 18:25:04,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:04,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-12-14 18:25:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:04,101 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-12-14 18:25:04,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:25:04,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983554778] [2021-12-14 18:25:04,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983554778] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:25:04,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:25:04,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 18:25:04,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516968243] [2021-12-14 18:25:04,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:25:04,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 18:25:04,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:25:04,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 18:25:04,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-14 18:25:04,104 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) [2021-12-14 18:25:09,451 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:25:11,480 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:25:13,518 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 [] [2021-12-14 18:25:22,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:25:22,312 INFO L93 Difference]: Finished difference Result 8989 states and 12678 transitions. [2021-12-14 18:25:22,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 18:25:22,312 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 [2021-12-14 18:25:22,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:25:22,328 INFO L225 Difference]: With dead ends: 8989 [2021-12-14 18:25:22,328 INFO L226 Difference]: Without dead ends: 4552 [2021-12-14 18:25:22,338 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 [2021-12-14 18:25:22,338 INFO L933 BasicCegarLoop]: 1720 mSDtfsCounter, 1251 mSDsluCounter, 2354 mSDsCounter, 0 mSdLazyCounter, 5206 mSolverCounterSat, 1186 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 4074 SdHoareTripleChecker+Invalid, 6395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1186 IncrementalHoareTripleChecker+Valid, 5206 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2021-12-14 18:25:22,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1505 Valid, 4074 Invalid, 6395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1186 Valid, 5206 Invalid, 3 Unknown, 0 Unchecked, 18.0s Time] [2021-12-14 18:25:22,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4552 states. [2021-12-14 18:25:22,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4552 to 4443. [2021-12-14 18:25:22,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4443 states, 3110 states have (on average 1.3070739549839228) internal successors, (4065), 3162 states have internal predecessors, (4065), 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) [2021-12-14 18:25:22,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4443 states to 4443 states and 6246 transitions. [2021-12-14 18:25:22,455 INFO L78 Accepts]: Start accepts. Automaton has 4443 states and 6246 transitions. Word has length 194 [2021-12-14 18:25:22,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:25:22,456 INFO L470 AbstractCegarLoop]: Abstraction has 4443 states and 6246 transitions. [2021-12-14 18:25:22,456 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) [2021-12-14 18:25:22,456 INFO L276 IsEmpty]: Start isEmpty. Operand 4443 states and 6246 transitions. [2021-12-14 18:25:22,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-12-14 18:25:22,462 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:25:22,462 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] [2021-12-14 18:25:22,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 18:25:22,462 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:25:22,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:25:22,463 INFO L85 PathProgramCache]: Analyzing trace with hash 831976557, now seen corresponding path program 1 times [2021-12-14 18:25:22,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:25:22,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310830015] [2021-12-14 18:25:22,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:25:22,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:25:22,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:22,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-14 18:25:22,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:22,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:25:22,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:22,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:25:22,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:22,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:25:22,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:22,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:25:22,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:22,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:25:22,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:22,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 18:25:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:22,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:25:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:22,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:25:22,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:22,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-14 18:25:22,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:22,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:25:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:22,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:25:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:22,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-14 18:25:22,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:22,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:25:22,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:22,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:25:22,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:22,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 18:25:22,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:22,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:25:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:23,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-14 18:25:23,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:23,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:25:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:23,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-14 18:25:23,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:23,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:25:23,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:23,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-14 18:25:23,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:23,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-14 18:25:23,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:23,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-14 18:25:23,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:23,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-14 18:25:23,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:23,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-12-14 18:25:23,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:25:23,072 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-12-14 18:25:23,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:25:23,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310830015] [2021-12-14 18:25:23,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310830015] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:25:23,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:25:23,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-14 18:25:23,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303583451] [2021-12-14 18:25:23,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:25:23,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-14 18:25:23,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:25:23,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-14 18:25:23,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2021-12-14 18:25:23,074 INFO L87 Difference]: Start difference. First operand 4443 states and 6246 transitions. Second operand has 15 states, 15 states have (on average 5.8) internal successors, (87), 9 states have internal predecessors, (87), 5 states have call successors, (22), 7 states have call predecessors, (22), 4 states have return successors, (18), 7 states have call predecessors, (18), 5 states have call successors, (18)