./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclink.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclink.ko-main.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 51be78885ca7a0fdf86d7aa977405871bdb86d4d67702760ccb1fc038e7f33e2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 23:31:20,187 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 23:31:20,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 23:31:20,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 23:31:20,247 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 23:31:20,248 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 23:31:20,250 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 23:31:20,252 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 23:31:20,254 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 23:31:20,259 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 23:31:20,260 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 23:31:20,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 23:31:20,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 23:31:20,264 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 23:31:20,265 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 23:31:20,269 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 23:31:20,269 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 23:31:20,271 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 23:31:20,272 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 23:31:20,278 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 23:31:20,280 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 23:31:20,281 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 23:31:20,282 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 23:31:20,283 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 23:31:20,284 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 23:31:20,287 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 23:31:20,287 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 23:31:20,287 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 23:31:20,288 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 23:31:20,289 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 23:31:20,290 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 23:31:20,290 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 23:31:20,292 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 23:31:20,292 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 23:31:20,293 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 23:31:20,294 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 23:31:20,294 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 23:31:20,294 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 23:31:20,295 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 23:31:20,295 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 23:31:20,296 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 23:31:20,297 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 23:31:20,298 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-22 23:31:20,328 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 23:31:20,328 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 23:31:20,329 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 23:31:20,329 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 23:31:20,330 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 23:31:20,330 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 23:31:20,330 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 23:31:20,331 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 23:31:20,331 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 23:31:20,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 23:31:20,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 23:31:20,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 23:31:20,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 23:31:20,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 23:31:20,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 23:31:20,333 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 23:31:20,333 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 23:31:20,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 23:31:20,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 23:31:20,334 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 23:31:20,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 23:31:20,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:31:20,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 23:31:20,335 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 23:31:20,335 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 23:31:20,336 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 23:31:20,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 23:31:20,336 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 23:31:20,336 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 23:31:20,337 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 23:31:20,337 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51be78885ca7a0fdf86d7aa977405871bdb86d4d67702760ccb1fc038e7f33e2 [2022-07-22 23:31:20,544 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 23:31:20,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 23:31:20,563 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 23:31:20,564 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 23:31:20,567 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 23:31:20,569 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclink.ko-main.cil.out.i [2022-07-22 23:31:20,641 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b94ea02ec/0451b09524fb4d33a166c532e658ce58/FLAG597cf2317 [2022-07-22 23:31:21,396 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 23:31:21,397 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclink.ko-main.cil.out.i [2022-07-22 23:31:21,448 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b94ea02ec/0451b09524fb4d33a166c532e658ce58/FLAG597cf2317 [2022-07-22 23:31:21,930 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b94ea02ec/0451b09524fb4d33a166c532e658ce58 [2022-07-22 23:31:21,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 23:31:21,936 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 23:31:21,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 23:31:21,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 23:31:21,939 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 23:31:21,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:31:21" (1/1) ... [2022-07-22 23:31:21,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c50689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:31:21, skipping insertion in model container [2022-07-22 23:31:21,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:31:21" (1/1) ... [2022-07-22 23:31:21,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 23:31:22,100 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 23:31:24,403 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclink.ko-main.cil.out.i[420085,420098] [2022-07-22 23:31:24,541 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:31:24,576 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 23:31:24,992 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclink.ko-main.cil.out.i[420085,420098] [2022-07-22 23:31:25,006 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:31:25,156 INFO L208 MainTranslator]: Completed translation [2022-07-22 23:31:25,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:31:25 WrapperNode [2022-07-22 23:31:25,158 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 23:31:25,160 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 23:31:25,160 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 23:31:25,160 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 23:31:25,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:31:25" (1/1) ... [2022-07-22 23:31:25,291 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:31:25" (1/1) ... [2022-07-22 23:31:25,490 INFO L137 Inliner]: procedures = 395, calls = 4060, calls flagged for inlining = 199, calls inlined = 146, statements flattened = 7353 [2022-07-22 23:31:25,491 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 23:31:25,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 23:31:25,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 23:31:25,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 23:31:25,499 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:31:25" (1/1) ... [2022-07-22 23:31:25,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:31:25" (1/1) ... [2022-07-22 23:31:25,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:31:25" (1/1) ... [2022-07-22 23:31:25,543 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:31:25" (1/1) ... [2022-07-22 23:31:25,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:31:25" (1/1) ... [2022-07-22 23:31:25,723 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:31:25" (1/1) ... [2022-07-22 23:31:25,752 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:31:25" (1/1) ... [2022-07-22 23:31:25,786 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 23:31:25,787 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 23:31:25,787 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 23:31:25,787 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 23:31:25,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:31:25" (1/1) ... [2022-07-22 23:31:25,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:31:25,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:31:25,816 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) [2022-07-22 23:31:25,839 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 [2022-07-22 23:31:25,854 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_wait_until_sent [2022-07-22 23:31:25,854 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_wait_until_sent [2022-07-22 23:31:25,854 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-07-22 23:31:25,855 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-07-22 23:31:25,855 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-07-22 23:31:25,855 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_start [2022-07-22 23:31:25,855 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_start [2022-07-22 23:31:25,855 INFO L130 BoogieDeclarations]: Found specification of procedure usc_set_txidle [2022-07-22 23:31:25,855 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_set_txidle [2022-07-22 23:31:25,855 INFO L130 BoogieDeclarations]: Found specification of procedure hdlcdev_ioctl [2022-07-22 23:31:25,856 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlcdev_ioctl [2022-07-22 23:31:25,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-22 23:31:25,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-22 23:31:25,856 INFO L130 BoogieDeclarations]: Found specification of procedure usc_loopback_frame [2022-07-22 23:31:25,856 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_loopback_frame [2022-07-22 23:31:25,856 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap_nocache [2022-07-22 23:31:25,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap_nocache [2022-07-22 23:31:25,857 INFO L130 BoogieDeclarations]: Found specification of procedure usc_start_receiver [2022-07-22 23:31:25,857 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_start_receiver [2022-07-22 23:31:25,857 INFO L130 BoogieDeclarations]: Found specification of procedure usc_set_serial_signals [2022-07-22 23:31:25,857 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_set_serial_signals [2022-07-22 23:31:25,857 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_trace_block [2022-07-22 23:31:25,857 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_trace_block [2022-07-22 23:31:25,857 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-07-22 23:31:25,858 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-07-22 23:31:25,858 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-07-22 23:31:25,858 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-07-22 23:31:25,858 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mgsl_ops_disconnect_2 [2022-07-22 23:31:25,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mgsl_ops_disconnect_2 [2022-07-22 23:31:25,858 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_change_mtu [2022-07-22 23:31:25,858 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_change_mtu [2022-07-22 23:31:25,859 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-22 23:31:25,859 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-22 23:31:25,859 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-07-22 23:31:25,859 INFO L130 BoogieDeclarations]: Found specification of procedure startup [2022-07-22 23:31:25,859 INFO L138 BoogieDeclarations]: Found implementation of procedure startup [2022-07-22 23:31:25,859 INFO L130 BoogieDeclarations]: Found specification of procedure load_next_tx_holding_buffer [2022-07-22 23:31:25,859 INFO L138 BoogieDeclarations]: Found implementation of procedure load_next_tx_holding_buffer [2022-07-22 23:31:25,859 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-22 23:31:25,860 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-22 23:31:25,860 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_tty_port [2022-07-22 23:31:25,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_tty_port [2022-07-22 23:31:25,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 23:31:25,860 INFO L130 BoogieDeclarations]: Found specification of procedure dtr_rts [2022-07-22 23:31:25,860 INFO L138 BoogieDeclarations]: Found implementation of procedure dtr_rts [2022-07-22 23:31:25,860 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-07-22 23:31:25,861 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-07-22 23:31:25,861 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-07-22 23:31:25,861 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-07-22 23:31:25,861 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2022-07-22 23:31:25,862 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2022-07-22 23:31:25,862 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-22 23:31:25,862 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-22 23:31:25,862 INFO L130 BoogieDeclarations]: Found specification of procedure tiocmset [2022-07-22 23:31:25,862 INFO L138 BoogieDeclarations]: Found implementation of procedure tiocmset [2022-07-22 23:31:25,863 INFO L130 BoogieDeclarations]: Found specification of procedure usc_OutDmaReg [2022-07-22 23:31:25,863 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_OutDmaReg [2022-07-22 23:31:25,864 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-07-22 23:31:25,864 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-07-22 23:31:25,864 INFO L130 BoogieDeclarations]: Found specification of procedure usc_loopmode_cancel_transmit [2022-07-22 23:31:25,865 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_loopmode_cancel_transmit [2022-07-22 23:31:25,865 INFO L130 BoogieDeclarations]: Found specification of procedure usc_load_txfifo [2022-07-22 23:31:25,865 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_load_txfifo [2022-07-22 23:31:25,865 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-07-22 23:31:25,865 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-07-22 23:31:25,865 INFO L130 BoogieDeclarations]: Found specification of procedure hdlcdev_tx_timeout [2022-07-22 23:31:25,865 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlcdev_tx_timeout [2022-07-22 23:31:25,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-22 23:31:25,866 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-07-22 23:31:25,866 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-07-22 23:31:25,866 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-07-22 23:31:25,866 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-07-22 23:31:25,866 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-22 23:31:25,866 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-22 23:31:25,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-22 23:31:25,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 23:31:25,867 INFO L130 BoogieDeclarations]: Found specification of procedure usc_reset [2022-07-22 23:31:25,867 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_reset [2022-07-22 23:31:25,868 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_free_frame_memory [2022-07-22 23:31:25,868 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_free_frame_memory [2022-07-22 23:31:25,868 INFO L130 BoogieDeclarations]: Found specification of procedure usc_InReg [2022-07-22 23:31:25,868 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_InReg [2022-07-22 23:31:25,868 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2022-07-22 23:31:25,868 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2022-07-22 23:31:25,868 INFO L130 BoogieDeclarations]: Found specification of procedure usc_enable_loopback [2022-07-22 23:31:25,869 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_enable_loopback [2022-07-22 23:31:25,869 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_load_tx_dma_buffer [2022-07-22 23:31:25,869 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_load_tx_dma_buffer [2022-07-22 23:31:25,869 INFO L130 BoogieDeclarations]: Found specification of procedure usc_DmaCmd [2022-07-22 23:31:25,869 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_DmaCmd [2022-07-22 23:31:25,869 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_flush_buffer [2022-07-22 23:31:25,870 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_flush_buffer [2022-07-22 23:31:25,870 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-07-22 23:31:25,870 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-07-22 23:31:25,870 INFO L130 BoogieDeclarations]: Found specification of procedure carrier_raised [2022-07-22 23:31:25,870 INFO L138 BoogieDeclarations]: Found implementation of procedure carrier_raised [2022-07-22 23:31:25,871 INFO L130 BoogieDeclarations]: Found specification of procedure usc_RTCmd [2022-07-22 23:31:25,871 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_RTCmd [2022-07-22 23:31:25,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 23:31:25,872 INFO L130 BoogieDeclarations]: Found specification of procedure usc_set_sdlc_mode [2022-07-22 23:31:25,872 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_set_sdlc_mode [2022-07-22 23:31:25,872 INFO L130 BoogieDeclarations]: Found specification of procedure usc_stop_receiver [2022-07-22 23:31:25,872 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_stop_receiver [2022-07-22 23:31:25,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 23:31:25,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 23:31:25,873 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-22 23:31:25,873 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-07-22 23:31:25,873 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-07-22 23:31:25,873 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_add_device [2022-07-22 23:31:25,873 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_add_device [2022-07-22 23:31:25,873 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_unthrottle [2022-07-22 23:31:25,874 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_unthrottle [2022-07-22 23:31:25,874 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_throttle [2022-07-22 23:31:25,874 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_throttle [2022-07-22 23:31:25,874 INFO L130 BoogieDeclarations]: Found specification of procedure usc_OutReg [2022-07-22 23:31:25,874 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_OutReg [2022-07-22 23:31:25,875 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-22 23:31:25,875 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-22 23:31:25,876 INFO L130 BoogieDeclarations]: Found specification of procedure tiocmget [2022-07-22 23:31:25,878 INFO L138 BoogieDeclarations]: Found implementation of procedure tiocmget [2022-07-22 23:31:25,878 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_set_termios [2022-07-22 23:31:25,878 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_set_termios [2022-07-22 23:31:25,878 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-07-22 23:31:25,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-07-22 23:31:25,880 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-07-22 23:31:25,880 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-07-22 23:31:25,880 INFO L130 BoogieDeclarations]: Found specification of procedure usc_stop_transmitter [2022-07-22 23:31:25,880 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_stop_transmitter [2022-07-22 23:31:25,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 23:31:25,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 23:31:25,881 INFO L130 BoogieDeclarations]: Found specification of procedure remove_wait_queue [2022-07-22 23:31:25,881 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_wait_queue [2022-07-22 23:31:25,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-22 23:31:25,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-22 23:31:25,881 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_flush_chars [2022-07-22 23:31:25,881 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_flush_chars [2022-07-22 23:31:25,881 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-07-22 23:31:25,882 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-07-22 23:31:25,882 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-07-22 23:31:25,882 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-07-22 23:31:25,882 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_send_xchar [2022-07-22 23:31:25,882 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_send_xchar [2022-07-22 23:31:25,882 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_change_params [2022-07-22 23:31:25,882 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_change_params [2022-07-22 23:31:25,883 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-22 23:31:25,883 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-22 23:31:25,883 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-22 23:31:25,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-22 23:31:25,883 INFO L130 BoogieDeclarations]: Found specification of procedure usc_get_serial_signals [2022-07-22 23:31:25,883 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_get_serial_signals [2022-07-22 23:31:25,883 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_reset_rx_dma_buffers [2022-07-22 23:31:25,883 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_reset_rx_dma_buffers [2022-07-22 23:31:25,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-22 23:31:25,884 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-22 23:31:25,884 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-07-22 23:31:25,884 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-07-22 23:31:25,884 INFO L130 BoogieDeclarations]: Found specification of procedure usc_start_transmitter [2022-07-22 23:31:25,884 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_start_transmitter [2022-07-22 23:31:25,884 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-07-22 23:31:25,884 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-07-22 23:31:25,885 INFO L130 BoogieDeclarations]: Found specification of procedure msleep_interruptible [2022-07-22 23:31:25,885 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep_interruptible [2022-07-22 23:31:25,885 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-22 23:31:25,885 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-22 23:31:25,885 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_paranoia_check [2022-07-22 23:31:25,885 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_paranoia_check [2022-07-22 23:31:25,885 INFO L130 BoogieDeclarations]: Found specification of procedure usc_InDmaReg [2022-07-22 23:31:25,885 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_InDmaReg [2022-07-22 23:31:25,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 23:31:25,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 23:31:25,886 INFO L130 BoogieDeclarations]: Found specification of procedure usc_loopmode_active [2022-07-22 23:31:25,886 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_loopmode_active [2022-07-22 23:31:25,886 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_stop [2022-07-22 23:31:25,886 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_stop [2022-07-22 23:31:25,886 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2022-07-22 23:31:25,886 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2022-07-22 23:31:25,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 23:31:25,887 INFO L130 BoogieDeclarations]: Found specification of procedure synclink_remove_one [2022-07-22 23:31:25,887 INFO L138 BoogieDeclarations]: Found implementation of procedure synclink_remove_one [2022-07-22 23:31:25,887 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-07-22 23:31:25,887 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-07-22 23:31:25,887 INFO L130 BoogieDeclarations]: Found specification of procedure synclink_cleanup [2022-07-22 23:31:25,887 INFO L138 BoogieDeclarations]: Found implementation of procedure synclink_cleanup [2022-07-22 23:31:25,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-07-22 23:31:25,888 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-07-22 23:31:25,888 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-07-22 23:31:25,888 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-07-22 23:31:25,888 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2022-07-22 23:31:25,888 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2022-07-22 23:31:25,888 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-07-22 23:31:25,888 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-07-22 23:31:25,888 INFO L130 BoogieDeclarations]: Found specification of procedure add_wait_queue [2022-07-22 23:31:25,889 INFO L138 BoogieDeclarations]: Found implementation of procedure add_wait_queue [2022-07-22 23:31:25,889 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_write_room [2022-07-22 23:31:25,889 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_write_room [2022-07-22 23:31:25,889 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_break [2022-07-22 23:31:25,889 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_break [2022-07-22 23:31:25,889 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_allocate_device [2022-07-22 23:31:25,889 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_allocate_device [2022-07-22 23:31:25,890 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2022-07-22 23:31:25,890 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2022-07-22 23:31:25,890 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_install [2022-07-22 23:31:25,890 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_install [2022-07-22 23:31:25,890 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hung_up_p [2022-07-22 23:31:25,890 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hung_up_p [2022-07-22 23:31:25,890 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_release_resources [2022-07-22 23:31:25,890 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_release_resources [2022-07-22 23:31:25,891 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-07-22 23:31:25,891 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-07-22 23:31:25,891 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-07-22 23:31:25,891 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-07-22 23:31:25,891 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-07-22 23:31:25,891 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-07-22 23:31:25,891 INFO L130 BoogieDeclarations]: Found specification of procedure usc_loopmode_send_done [2022-07-22 23:31:25,891 INFO L138 BoogieDeclarations]: Found implementation of procedure usc_loopmode_send_done [2022-07-22 23:31:25,892 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-22 23:31:25,892 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-22 23:31:25,892 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-07-22 23:31:25,892 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-07-22 23:31:25,892 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-22 23:31:25,892 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-22 23:31:25,892 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_ioctl [2022-07-22 23:31:25,892 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_ioctl [2022-07-22 23:31:25,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_tty_port [2022-07-22 23:31:25,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_tty_port [2022-07-22 23:31:25,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 23:31:25,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-22 23:31:25,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-22 23:31:25,893 INFO L130 BoogieDeclarations]: Found specification of procedure msgl_get_icount [2022-07-22 23:31:25,893 INFO L138 BoogieDeclarations]: Found implementation of procedure msgl_get_icount [2022-07-22 23:31:25,893 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_chars_in_buffer [2022-07-22 23:31:25,894 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_chars_in_buffer [2022-07-22 23:31:25,894 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-07-22 23:31:25,894 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-07-22 23:31:25,894 INFO L130 BoogieDeclarations]: Found specification of procedure tty_wakeup [2022-07-22 23:31:25,894 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_wakeup [2022-07-22 23:31:25,894 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-07-22 23:31:25,894 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-07-22 23:31:25,895 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_put_char [2022-07-22 23:31:25,895 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_put_char [2022-07-22 23:31:25,895 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_program_hw [2022-07-22 23:31:25,895 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_program_hw [2022-07-22 23:31:25,895 INFO L130 BoogieDeclarations]: Found specification of procedure shutdown [2022-07-22 23:31:25,895 INFO L138 BoogieDeclarations]: Found implementation of procedure shutdown [2022-07-22 23:31:25,895 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_hangup [2022-07-22 23:31:25,895 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_hangup [2022-07-22 23:31:25,896 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-07-22 23:31:25,896 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-07-22 23:31:25,896 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_ioctl [2022-07-22 23:31:25,896 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_ioctl [2022-07-22 23:31:25,896 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-07-22 23:31:25,896 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-07-22 23:31:25,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 23:31:25,896 INFO L130 BoogieDeclarations]: Found specification of procedure mgsl_alloc_frame_memory [2022-07-22 23:31:25,897 INFO L138 BoogieDeclarations]: Found implementation of procedure mgsl_alloc_frame_memory [2022-07-22 23:31:25,897 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2022-07-22 23:31:25,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2022-07-22 23:31:25,897 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2022-07-22 23:31:25,897 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2022-07-22 23:31:26,784 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 23:31:26,787 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 23:31:48,846 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 23:31:48,866 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 23:31:48,866 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 23:31:48,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:31:48 BoogieIcfgContainer [2022-07-22 23:31:48,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 23:31:48,872 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 23:31:48,872 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 23:31:48,875 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 23:31:48,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 11:31:21" (1/3) ... [2022-07-22 23:31:48,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a02a387 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:31:48, skipping insertion in model container [2022-07-22 23:31:48,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:31:25" (2/3) ... [2022-07-22 23:31:48,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a02a387 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:31:48, skipping insertion in model container [2022-07-22 23:31:48,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:31:48" (3/3) ... [2022-07-22 23:31:48,878 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--tty--synclink.ko-main.cil.out.i [2022-07-22 23:31:48,890 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 23:31:48,891 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 23:31:48,980 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 23:31:48,988 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6d15b42, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@60281916 [2022-07-22 23:31:48,988 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 23:31:49,003 INFO L276 IsEmpty]: Start isEmpty. Operand has 3259 states, 2247 states have (on average 1.422340898976413) internal successors, (3196), 2324 states have internal predecessors, (3196), 890 states have call successors, (890), 120 states have call predecessors, (890), 120 states have return successors, (890), 870 states have call predecessors, (890), 890 states have call successors, (890) [2022-07-22 23:31:49,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-22 23:31:49,022 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:31:49,023 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:31:49,023 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:31:49,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:31:49,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1697268518, now seen corresponding path program 1 times [2022-07-22 23:31:49,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:31:49,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123532133] [2022-07-22 23:31:49,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:31:49,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:31:49,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:31:49,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 23:31:49,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:31:49,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:31:49,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:31:49,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123532133] [2022-07-22 23:31:49,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123532133] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:31:49,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:31:49,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:31:49,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886021774] [2022-07-22 23:31:49,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:31:49,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:31:49,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:31:49,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:31:49,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:31:49,693 INFO L87 Difference]: Start difference. First operand has 3259 states, 2247 states have (on average 1.422340898976413) internal successors, (3196), 2324 states have internal predecessors, (3196), 890 states have call successors, (890), 120 states have call predecessors, (890), 120 states have return successors, (890), 870 states have call predecessors, (890), 890 states have call successors, (890) Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 23:31:54,087 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:31:56,343 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:32:02,224 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:32:07,017 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:32:09,953 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:32:12,159 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:32:14,627 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:32:16,870 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:32:21,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:32:21,106 INFO L93 Difference]: Finished difference Result 10056 states and 15715 transitions. [2022-07-22 23:32:21,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:32:21,113 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-07-22 23:32:21,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:32:21,202 INFO L225 Difference]: With dead ends: 10056 [2022-07-22 23:32:21,203 INFO L226 Difference]: Without dead ends: 6794 [2022-07-22 23:32:21,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:32:21,252 INFO L413 NwaCegarLoop]: 5318 mSDtfsCounter, 5899 mSDsluCounter, 3769 mSDsCounter, 0 mSdLazyCounter, 5668 mSolverCounterSat, 2487 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6701 SdHoareTripleChecker+Valid, 9087 SdHoareTripleChecker+Invalid, 8162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2487 IncrementalHoareTripleChecker+Valid, 5668 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.6s IncrementalHoareTripleChecker+Time [2022-07-22 23:32:21,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6701 Valid, 9087 Invalid, 8162 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2487 Valid, 5668 Invalid, 7 Unknown, 0 Unchecked, 30.6s Time] [2022-07-22 23:32:21,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6794 states. [2022-07-22 23:32:21,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6794 to 6444. [2022-07-22 23:32:21,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6444 states, 4438 states have (on average 1.4100946372239747) internal successors, (6258), 4582 states have internal predecessors, (6258), 1767 states have call successors, (1767), 239 states have call predecessors, (1767), 238 states have return successors, (1761), 1721 states have call predecessors, (1761), 1761 states have call successors, (1761) [2022-07-22 23:32:21,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6444 states to 6444 states and 9786 transitions. [2022-07-22 23:32:21,839 INFO L78 Accepts]: Start accepts. Automaton has 6444 states and 9786 transitions. Word has length 23 [2022-07-22 23:32:21,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:32:21,840 INFO L495 AbstractCegarLoop]: Abstraction has 6444 states and 9786 transitions. [2022-07-22 23:32:21,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 23:32:21,841 INFO L276 IsEmpty]: Start isEmpty. Operand 6444 states and 9786 transitions. [2022-07-22 23:32:21,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-22 23:32:21,853 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:32:21,853 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:32:21,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 23:32:21,854 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:32:21,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:32:21,856 INFO L85 PathProgramCache]: Analyzing trace with hash 2059515394, now seen corresponding path program 1 times [2022-07-22 23:32:21,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:32:21,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843294931] [2022-07-22 23:32:21,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:32:21,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:32:21,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:32:22,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 23:32:22,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:32:22,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:32:22,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:32:22,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843294931] [2022-07-22 23:32:22,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843294931] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:32:22,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:32:22,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 23:32:22,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397729762] [2022-07-22 23:32:22,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:32:22,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 23:32:22,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:32:22,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 23:32:22,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:32:22,056 INFO L87 Difference]: Start difference. First operand 6444 states and 9786 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 23:32:22,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:32:22,747 INFO L93 Difference]: Finished difference Result 16377 states and 24758 transitions. [2022-07-22 23:32:22,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 23:32:22,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2022-07-22 23:32:22,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:32:22,825 INFO L225 Difference]: With dead ends: 16377 [2022-07-22 23:32:22,826 INFO L226 Difference]: Without dead ends: 9936 [2022-07-22 23:32:22,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:32:22,870 INFO L413 NwaCegarLoop]: 5669 mSDtfsCounter, 2629 mSDsluCounter, 4645 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2629 SdHoareTripleChecker+Valid, 10314 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:32:22,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2629 Valid, 10314 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 23:32:22,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9936 states. [2022-07-22 23:32:23,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9936 to 9924. [2022-07-22 23:32:23,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9924 states, 6781 states have (on average 1.395221943666126) internal successors, (9461), 6989 states have internal predecessors, (9461), 2752 states have call successors, (2752), 391 states have call predecessors, (2752), 390 states have return successors, (2746), 2677 states have call predecessors, (2746), 2746 states have call successors, (2746) [2022-07-22 23:32:23,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9924 states to 9924 states and 14959 transitions. [2022-07-22 23:32:23,590 INFO L78 Accepts]: Start accepts. Automaton has 9924 states and 14959 transitions. Word has length 42 [2022-07-22 23:32:23,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:32:23,591 INFO L495 AbstractCegarLoop]: Abstraction has 9924 states and 14959 transitions. [2022-07-22 23:32:23,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 23:32:23,591 INFO L276 IsEmpty]: Start isEmpty. Operand 9924 states and 14959 transitions. [2022-07-22 23:32:23,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-22 23:32:23,594 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:32:23,594 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:32:23,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 23:32:23,594 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:32:23,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:32:23,595 INFO L85 PathProgramCache]: Analyzing trace with hash -2000340873, now seen corresponding path program 1 times [2022-07-22 23:32:23,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:32:23,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869406676] [2022-07-22 23:32:23,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:32:23,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:32:23,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:32:23,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 23:32:23,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:32:23,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 23:32:23,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:32:23,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:32:23,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:32:23,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869406676] [2022-07-22 23:32:23,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869406676] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:32:23,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:32:23,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:32:23,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179672065] [2022-07-22 23:32:23,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:32:23,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:32:23,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:32:23,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:32:23,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:32:23,845 INFO L87 Difference]: Start difference. First operand 9924 states and 14959 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 23:32:34,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:32:34,037 INFO L93 Difference]: Finished difference Result 21956 states and 33498 transitions. [2022-07-22 23:32:34,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:32:34,037 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 47 [2022-07-22 23:32:34,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:32:34,130 INFO L225 Difference]: With dead ends: 21956 [2022-07-22 23:32:34,131 INFO L226 Difference]: Without dead ends: 12035 [2022-07-22 23:32:34,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:32:34,187 INFO L413 NwaCegarLoop]: 5584 mSDtfsCounter, 3125 mSDsluCounter, 7965 mSDsCounter, 0 mSdLazyCounter, 5925 mSolverCounterSat, 1395 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3572 SdHoareTripleChecker+Valid, 13549 SdHoareTripleChecker+Invalid, 7320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1395 IncrementalHoareTripleChecker+Valid, 5925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-07-22 23:32:34,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3572 Valid, 13549 Invalid, 7320 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1395 Valid, 5925 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2022-07-22 23:32:34,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12035 states. [2022-07-22 23:32:34,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12035 to 9928. [2022-07-22 23:32:34,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9928 states, 6785 states have (on average 1.3949889462048637) internal successors, (9465), 6993 states have internal predecessors, (9465), 2752 states have call successors, (2752), 391 states have call predecessors, (2752), 390 states have return successors, (2746), 2677 states have call predecessors, (2746), 2746 states have call successors, (2746) [2022-07-22 23:32:34,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9928 states to 9928 states and 14963 transitions. [2022-07-22 23:32:34,891 INFO L78 Accepts]: Start accepts. Automaton has 9928 states and 14963 transitions. Word has length 47 [2022-07-22 23:32:34,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:32:34,892 INFO L495 AbstractCegarLoop]: Abstraction has 9928 states and 14963 transitions. [2022-07-22 23:32:34,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 23:32:34,893 INFO L276 IsEmpty]: Start isEmpty. Operand 9928 states and 14963 transitions. [2022-07-22 23:32:34,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-22 23:32:34,896 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:32:34,896 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:32:34,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 23:32:34,896 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:32:34,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:32:34,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1312663061, now seen corresponding path program 1 times [2022-07-22 23:32:34,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:32:34,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778770950] [2022-07-22 23:32:34,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:32:34,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:32:35,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:32:35,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 23:32:35,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:32:35,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 23:32:35,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:32:35,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:32:35,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:32:35,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778770950] [2022-07-22 23:32:35,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778770950] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:32:35,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:32:35,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:32:35,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688902667] [2022-07-22 23:32:35,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:32:35,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:32:35,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:32:35,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:32:35,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:32:35,229 INFO L87 Difference]: Start difference. First operand 9928 states and 14963 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 23:32:43,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:32:43,491 INFO L93 Difference]: Finished difference Result 21045 states and 31941 transitions. [2022-07-22 23:32:43,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 23:32:43,495 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 50 [2022-07-22 23:32:43,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:32:43,566 INFO L225 Difference]: With dead ends: 21045 [2022-07-22 23:32:43,567 INFO L226 Difference]: Without dead ends: 11120 [2022-07-22 23:32:43,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:32:43,615 INFO L413 NwaCegarLoop]: 4850 mSDtfsCounter, 6600 mSDsluCounter, 4629 mSDsCounter, 0 mSdLazyCounter, 3757 mSolverCounterSat, 2968 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7025 SdHoareTripleChecker+Valid, 9479 SdHoareTripleChecker+Invalid, 6725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2968 IncrementalHoareTripleChecker+Valid, 3757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-07-22 23:32:43,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7025 Valid, 9479 Invalid, 6725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2968 Valid, 3757 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-07-22 23:32:43,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11120 states. [2022-07-22 23:32:44,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11120 to 9930. [2022-07-22 23:32:44,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9930 states, 6787 states have (on average 1.394725209960218) internal successors, (9466), 6995 states have internal predecessors, (9466), 2752 states have call successors, (2752), 391 states have call predecessors, (2752), 390 states have return successors, (2746), 2677 states have call predecessors, (2746), 2746 states have call successors, (2746) [2022-07-22 23:32:44,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9930 states to 9930 states and 14964 transitions. [2022-07-22 23:32:44,352 INFO L78 Accepts]: Start accepts. Automaton has 9930 states and 14964 transitions. Word has length 50 [2022-07-22 23:32:44,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:32:44,355 INFO L495 AbstractCegarLoop]: Abstraction has 9930 states and 14964 transitions. [2022-07-22 23:32:44,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 23:32:44,355 INFO L276 IsEmpty]: Start isEmpty. Operand 9930 states and 14964 transitions. [2022-07-22 23:32:44,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-22 23:32:44,358 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:32:44,358 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:32:44,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 23:32:44,359 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:32:44,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:32:44,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1860967135, now seen corresponding path program 1 times [2022-07-22 23:32:44,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:32:44,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849924145] [2022-07-22 23:32:44,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:32:44,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:32:44,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:32:44,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 23:32:44,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:32:44,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 23:32:44,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:32:44,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 23:32:44,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:32:44,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:32:44,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:32:44,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849924145] [2022-07-22 23:32:44,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849924145] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:32:44,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:32:44,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:32:44,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971317683] [2022-07-22 23:32:44,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:32:44,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:32:44,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:32:44,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:32:44,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:32:44,603 INFO L87 Difference]: Start difference. First operand 9930 states and 14964 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-22 23:32:47,532 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:32:51,379 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:32:56,076 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:32:59,137 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:33:01,610 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:33:03,767 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:33:06,135 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:33:08,377 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:33:11,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:33:11,533 INFO L93 Difference]: Finished difference Result 10634 states and 16215 transitions. [2022-07-22 23:33:11,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:33:11,534 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 56 [2022-07-22 23:33:11,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:33:11,600 INFO L225 Difference]: With dead ends: 10634 [2022-07-22 23:33:11,600 INFO L226 Difference]: Without dead ends: 10631 [2022-07-22 23:33:11,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:33:11,614 INFO L413 NwaCegarLoop]: 4310 mSDtfsCounter, 6243 mSDsluCounter, 2420 mSDsCounter, 0 mSdLazyCounter, 3633 mSolverCounterSat, 3663 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6747 SdHoareTripleChecker+Valid, 6730 SdHoareTripleChecker+Invalid, 7303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3663 IncrementalHoareTripleChecker+Valid, 3633 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.4s IncrementalHoareTripleChecker+Time [2022-07-22 23:33:11,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6747 Valid, 6730 Invalid, 7303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3663 Valid, 3633 Invalid, 7 Unknown, 0 Unchecked, 26.4s Time] [2022-07-22 23:33:11,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10631 states. [2022-07-22 23:33:12,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10631 to 9929. [2022-07-22 23:33:12,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9929 states, 6787 states have (on average 1.3945778694563136) internal successors, (9465), 6994 states have internal predecessors, (9465), 2751 states have call successors, (2751), 391 states have call predecessors, (2751), 390 states have return successors, (2746), 2677 states have call predecessors, (2746), 2746 states have call successors, (2746) [2022-07-22 23:33:12,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9929 states to 9929 states and 14962 transitions. [2022-07-22 23:33:12,367 INFO L78 Accepts]: Start accepts. Automaton has 9929 states and 14962 transitions. Word has length 56 [2022-07-22 23:33:12,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:33:12,368 INFO L495 AbstractCegarLoop]: Abstraction has 9929 states and 14962 transitions. [2022-07-22 23:33:12,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-22 23:33:12,368 INFO L276 IsEmpty]: Start isEmpty. Operand 9929 states and 14962 transitions. [2022-07-22 23:33:12,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-22 23:33:12,373 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:33:12,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:33:12,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 23:33:12,374 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:33:12,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:33:12,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1853828954, now seen corresponding path program 1 times [2022-07-22 23:33:12,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:33:12,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596985962] [2022-07-22 23:33:12,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:33:12,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:33:12,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:33:12,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 23:33:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:33:12,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 23:33:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:33:12,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 23:33:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:33:12,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:33:12,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:33:12,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596985962] [2022-07-22 23:33:12,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596985962] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:33:12,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:33:12,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:33:12,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993409553] [2022-07-22 23:33:12,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:33:12,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:33:12,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:33:12,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:33:12,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:33:12,676 INFO L87 Difference]: Start difference. First operand 9929 states and 14962 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-22 23:33:15,613 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:33:19,906 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:33:22,198 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:33:24,986 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:33:28,102 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:33:30,512 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:33:32,724 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:33:35,095 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:33:37,335 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 [] [2022-07-22 23:33:40,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:33:40,872 INFO L93 Difference]: Finished difference Result 10633 states and 16213 transitions. [2022-07-22 23:33:40,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:33:40,873 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 57 [2022-07-22 23:33:40,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:33:40,930 INFO L225 Difference]: With dead ends: 10633 [2022-07-22 23:33:40,930 INFO L226 Difference]: Without dead ends: 10630 [2022-07-22 23:33:40,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:33:40,942 INFO L413 NwaCegarLoop]: 4298 mSDtfsCounter, 6258 mSDsluCounter, 2418 mSDsCounter, 0 mSdLazyCounter, 3631 mSolverCounterSat, 3663 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6762 SdHoareTripleChecker+Valid, 6716 SdHoareTripleChecker+Invalid, 7302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3663 IncrementalHoareTripleChecker+Valid, 3631 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.6s IncrementalHoareTripleChecker+Time [2022-07-22 23:33:40,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6762 Valid, 6716 Invalid, 7302 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3663 Valid, 3631 Invalid, 8 Unknown, 0 Unchecked, 27.6s Time] [2022-07-22 23:33:40,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10630 states. [2022-07-22 23:33:41,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10630 to 9928. [2022-07-22 23:33:41,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9928 states, 6787 states have (on average 1.394430528952409) internal successors, (9464), 6993 states have internal predecessors, (9464), 2750 states have call successors, (2750), 391 states have call predecessors, (2750), 390 states have return successors, (2746), 2677 states have call predecessors, (2746), 2746 states have call successors, (2746) [2022-07-22 23:33:41,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9928 states to 9928 states and 14960 transitions. [2022-07-22 23:33:41,584 INFO L78 Accepts]: Start accepts. Automaton has 9928 states and 14960 transitions. Word has length 57 [2022-07-22 23:33:41,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:33:41,585 INFO L495 AbstractCegarLoop]: Abstraction has 9928 states and 14960 transitions. [2022-07-22 23:33:41,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-22 23:33:41,585 INFO L276 IsEmpty]: Start isEmpty. Operand 9928 states and 14960 transitions. [2022-07-22 23:33:41,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-22 23:33:41,588 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:33:41,588 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:33:41,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 23:33:41,589 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:33:41,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:33:41,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1632550210, now seen corresponding path program 1 times [2022-07-22 23:33:41,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:33:41,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670048780] [2022-07-22 23:33:41,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:33:41,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:33:41,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:33:41,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 23:33:41,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:33:41,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 23:33:41,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:33:41,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 23:33:41,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:33:41,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:33:41,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:33:41,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670048780] [2022-07-22 23:33:41,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670048780] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:33:41,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:33:41,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:33:41,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039674097] [2022-07-22 23:33:41,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:33:41,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:33:41,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:33:41,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:33:41,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:33:41,797 INFO L87 Difference]: Start difference. First operand 9928 states and 14960 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-22 23:33:44,602 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 [] [2022-07-22 23:33:48,902 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:33:51,971 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:33:54,801 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:33:58,115 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:34:00,513 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:34:02,682 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:34:05,044 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:34:07,254 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:34:09,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:34:09,848 INFO L93 Difference]: Finished difference Result 10632 states and 16211 transitions. [2022-07-22 23:34:09,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:34:09,849 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 58 [2022-07-22 23:34:09,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:34:09,912 INFO L225 Difference]: With dead ends: 10632 [2022-07-22 23:34:09,913 INFO L226 Difference]: Without dead ends: 10629 [2022-07-22 23:34:09,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:34:09,926 INFO L413 NwaCegarLoop]: 4308 mSDtfsCounter, 6243 mSDsluCounter, 2417 mSDsCounter, 0 mSdLazyCounter, 3642 mSolverCounterSat, 3661 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6741 SdHoareTripleChecker+Valid, 6725 SdHoareTripleChecker+Invalid, 7311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3661 IncrementalHoareTripleChecker+Valid, 3642 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.5s IncrementalHoareTripleChecker+Time [2022-07-22 23:34:09,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6741 Valid, 6725 Invalid, 7311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3661 Valid, 3642 Invalid, 8 Unknown, 0 Unchecked, 27.5s Time] [2022-07-22 23:34:09,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10629 states. [2022-07-22 23:34:10,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10629 to 9927. [2022-07-22 23:34:10,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9927 states, 6787 states have (on average 1.3942831884485045) internal successors, (9463), 6992 states have internal predecessors, (9463), 2749 states have call successors, (2749), 391 states have call predecessors, (2749), 390 states have return successors, (2746), 2677 states have call predecessors, (2746), 2746 states have call successors, (2746) [2022-07-22 23:34:10,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9927 states to 9927 states and 14958 transitions. [2022-07-22 23:34:10,617 INFO L78 Accepts]: Start accepts. Automaton has 9927 states and 14958 transitions. Word has length 58 [2022-07-22 23:34:10,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:34:10,618 INFO L495 AbstractCegarLoop]: Abstraction has 9927 states and 14958 transitions. [2022-07-22 23:34:10,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-22 23:34:10,618 INFO L276 IsEmpty]: Start isEmpty. Operand 9927 states and 14958 transitions. [2022-07-22 23:34:10,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-22 23:34:10,621 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:34:10,621 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:34:10,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 23:34:10,622 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:34:10,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:34:10,624 INFO L85 PathProgramCache]: Analyzing trace with hash -932118691, now seen corresponding path program 1 times [2022-07-22 23:34:10,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:34:10,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201259795] [2022-07-22 23:34:10,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:34:10,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:34:10,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:10,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 23:34:10,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:10,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 23:34:10,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:10,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 23:34:10,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:10,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:34:10,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:34:10,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201259795] [2022-07-22 23:34:10,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201259795] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:34:10,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:34:10,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:34:10,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390304792] [2022-07-22 23:34:10,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:34:10,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:34:10,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:34:10,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:34:10,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:34:10,817 INFO L87 Difference]: Start difference. First operand 9927 states and 14958 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-22 23:34:13,942 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:34:18,068 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:34:22,688 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:34:26,286 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:34:28,857 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:34:31,075 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:34:33,558 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:34:35,857 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:34:41,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:34:41,092 INFO L93 Difference]: Finished difference Result 12477 states and 18937 transitions. [2022-07-22 23:34:41,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 23:34:41,093 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 59 [2022-07-22 23:34:41,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:34:41,165 INFO L225 Difference]: With dead ends: 12477 [2022-07-22 23:34:41,165 INFO L226 Difference]: Without dead ends: 12393 [2022-07-22 23:34:41,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 23:34:41,181 INFO L413 NwaCegarLoop]: 4356 mSDtfsCounter, 7194 mSDsluCounter, 2491 mSDsCounter, 0 mSdLazyCounter, 5434 mSolverCounterSat, 4388 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7845 SdHoareTripleChecker+Valid, 6847 SdHoareTripleChecker+Invalid, 9830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4388 IncrementalHoareTripleChecker+Valid, 5434 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.6s IncrementalHoareTripleChecker+Time [2022-07-22 23:34:41,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7845 Valid, 6847 Invalid, 9830 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4388 Valid, 5434 Invalid, 8 Unknown, 0 Unchecked, 29.6s Time] [2022-07-22 23:34:41,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12393 states. [2022-07-22 23:34:41,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12393 to 11617. [2022-07-22 23:34:41,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11617 states, 7857 states have (on average 1.3894616265750286) internal successors, (10917), 8099 states have internal predecessors, (10917), 3277 states have call successors, (3277), 483 states have call predecessors, (3277), 482 states have return successors, (3276), 3188 states have call predecessors, (3276), 3276 states have call successors, (3276) [2022-07-22 23:34:41,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11617 states to 11617 states and 17470 transitions. [2022-07-22 23:34:41,979 INFO L78 Accepts]: Start accepts. Automaton has 11617 states and 17470 transitions. Word has length 59 [2022-07-22 23:34:41,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:34:41,980 INFO L495 AbstractCegarLoop]: Abstraction has 11617 states and 17470 transitions. [2022-07-22 23:34:41,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-22 23:34:41,981 INFO L276 IsEmpty]: Start isEmpty. Operand 11617 states and 17470 transitions. [2022-07-22 23:34:41,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 23:34:41,997 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:34:41,998 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:34:41,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 23:34:41,998 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:34:41,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:34:41,999 INFO L85 PathProgramCache]: Analyzing trace with hash 143235578, now seen corresponding path program 1 times [2022-07-22 23:34:41,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:34:41,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216650720] [2022-07-22 23:34:41,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:34:41,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:34:42,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:42,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 23:34:42,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:42,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 23:34:42,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:42,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 23:34:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:42,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 23:34:42,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:42,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 23:34:42,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:42,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 23:34:42,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:42,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:34:42,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:34:42,259 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:34:42,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:34:42,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216650720] [2022-07-22 23:34:42,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216650720] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:34:42,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:34:42,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:34:42,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897196756] [2022-07-22 23:34:42,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:34:42,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:34:42,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:34:42,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:34:42,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:34:42,262 INFO L87 Difference]: Start difference. First operand 11617 states and 17470 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 23:34:48,641 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:34:50,839 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:34:53,363 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:34:54,522 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:35:04,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:35:04,456 INFO L93 Difference]: Finished difference Result 30545 states and 46074 transitions. [2022-07-22 23:35:04,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 23:35:04,457 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 112 [2022-07-22 23:35:04,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:35:04,557 INFO L225 Difference]: With dead ends: 30545 [2022-07-22 23:35:04,557 INFO L226 Difference]: Without dead ends: 18931 [2022-07-22 23:35:04,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:35:04,620 INFO L413 NwaCegarLoop]: 6282 mSDtfsCounter, 8266 mSDsluCounter, 3683 mSDsCounter, 0 mSdLazyCounter, 7506 mSolverCounterSat, 6009 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8613 SdHoareTripleChecker+Valid, 9965 SdHoareTripleChecker+Invalid, 13517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6009 IncrementalHoareTripleChecker+Valid, 7506 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time [2022-07-22 23:35:04,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8613 Valid, 9965 Invalid, 13517 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6009 Valid, 7506 Invalid, 2 Unknown, 0 Unchecked, 21.0s Time] [2022-07-22 23:35:04,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18931 states. [2022-07-22 23:35:05,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18931 to 18426. [2022-07-22 23:35:05,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18426 states, 12502 states have (on average 1.3852183650615901) internal successors, (17318), 12901 states have internal predecessors, (17318), 5161 states have call successors, (5161), 763 states have call predecessors, (5161), 762 states have return successors, (5160), 5018 states have call predecessors, (5160), 5160 states have call successors, (5160) [2022-07-22 23:35:05,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18426 states to 18426 states and 27639 transitions. [2022-07-22 23:35:05,716 INFO L78 Accepts]: Start accepts. Automaton has 18426 states and 27639 transitions. Word has length 112 [2022-07-22 23:35:05,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:35:05,717 INFO L495 AbstractCegarLoop]: Abstraction has 18426 states and 27639 transitions. [2022-07-22 23:35:05,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 23:35:05,718 INFO L276 IsEmpty]: Start isEmpty. Operand 18426 states and 27639 transitions. [2022-07-22 23:35:05,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-22 23:35:05,735 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:35:05,735 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:35:05,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 23:35:05,736 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:35:05,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:35:05,736 INFO L85 PathProgramCache]: Analyzing trace with hash -371106096, now seen corresponding path program 1 times [2022-07-22 23:35:05,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:35:05,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042121185] [2022-07-22 23:35:05,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:35:05,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:35:05,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:06,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 23:35:06,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:06,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 23:35:06,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:06,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 23:35:06,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:06,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 23:35:06,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:06,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 23:35:06,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:06,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-22 23:35:06,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:06,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:35:06,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:35:06,142 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 23:35:06,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:35:06,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042121185] [2022-07-22 23:35:06,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042121185] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:35:06,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:35:06,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:35:06,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179437017] [2022-07-22 23:35:06,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:35:06,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:35:06,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:35:06,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:35:06,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:35:06,145 INFO L87 Difference]: Start difference. First operand 18426 states and 27639 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 23:35:10,482 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:35:12,204 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []