./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--synclinkmp.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclinkmp.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 04a4b1f21e140a71b13d0aa3889e8a2db465377126c9603026e75e43052ee15d --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 16:06:09,870 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 16:06:09,872 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 16:06:09,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 16:06:09,916 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 16:06:09,918 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 16:06:09,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 16:06:09,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 16:06:09,922 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 16:06:09,926 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 16:06:09,926 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 16:06:09,927 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 16:06:09,927 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 16:06:09,929 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 16:06:09,930 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 16:06:09,932 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 16:06:09,933 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 16:06:09,933 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 16:06:09,935 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 16:06:09,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 16:06:09,940 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 16:06:09,940 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 16:06:09,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 16:06:09,942 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 16:06:09,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 16:06:09,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 16:06:09,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 16:06:09,948 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 16:06:09,948 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 16:06:09,949 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 16:06:09,949 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 16:06:09,950 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 16:06:09,951 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 16:06:09,951 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 16:06:09,952 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 16:06:09,952 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 16:06:09,953 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 16:06:09,953 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 16:06:09,953 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 16:06:09,954 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 16:06:09,954 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 16:06:09,955 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-21 16:06:09,978 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 16:06:09,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 16:06:09,979 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 16:06:09,979 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 16:06:09,980 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 16:06:09,980 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 16:06:09,981 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 16:06:09,981 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 16:06:09,981 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 16:06:09,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 16:06:09,982 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 16:06:09,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 16:06:09,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 16:06:09,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 16:06:09,983 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 16:06:09,983 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 16:06:09,983 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 16:06:09,983 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 16:06:09,983 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 16:06:09,983 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 16:06:09,983 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 16:06:09,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 16:06:09,984 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 16:06:09,984 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 16:06:09,984 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 16:06:09,984 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 16:06:09,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 16:06:09,985 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 16:06:09,985 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 16:06:09,986 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 16:06:09,986 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 16:06:09,986 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04a4b1f21e140a71b13d0aa3889e8a2db465377126c9603026e75e43052ee15d [2021-12-21 16:06:10,150 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 16:06:10,173 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 16:06:10,175 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 16:06:10,176 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 16:06:10,187 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 16:06:10,189 INFO L432 ainManager$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--synclinkmp.ko-main.cil.out.i [2021-12-21 16:06:10,251 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ea63eff2/3dd254675310430bb3a6006f6d0a403e/FLAG3ac7f1f10 [2021-12-21 16:06:10,821 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 16:06:10,822 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclinkmp.ko-main.cil.out.i [2021-12-21 16:06:10,862 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ea63eff2/3dd254675310430bb3a6006f6d0a403e/FLAG3ac7f1f10 [2021-12-21 16:06:10,989 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ea63eff2/3dd254675310430bb3a6006f6d0a403e [2021-12-21 16:06:10,992 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 16:06:10,993 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 16:06:10,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 16:06:10,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 16:06:10,999 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 16:06:11,000 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:06:10" (1/1) ... [2021-12-21 16:06:11,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@773fb55b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:06:11, skipping insertion in model container [2021-12-21 16:06:11,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:06:10" (1/1) ... [2021-12-21 16:06:11,006 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 16:06:11,128 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 16:06:13,133 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--synclinkmp.ko-main.cil.out.i[386276,386289] [2021-12-21 16:06:13,196 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 16:06:13,266 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 16:06:13,693 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--synclinkmp.ko-main.cil.out.i[386276,386289] [2021-12-21 16:06:13,706 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 16:06:13,785 INFO L208 MainTranslator]: Completed translation [2021-12-21 16:06:13,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:06:13 WrapperNode [2021-12-21 16:06:13,787 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 16:06:13,788 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 16:06:13,788 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 16:06:13,789 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 16:06:13,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:06:13" (1/1) ... [2021-12-21 16:06:13,900 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:06:13" (1/1) ... [2021-12-21 16:06:14,094 INFO L137 Inliner]: procedures = 356, calls = 3806, calls flagged for inlining = 167, calls inlined = 133, statements flattened = 7285 [2021-12-21 16:06:14,095 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 16:06:14,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 16:06:14,095 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 16:06:14,096 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 16:06:14,101 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:06:13" (1/1) ... [2021-12-21 16:06:14,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:06:13" (1/1) ... [2021-12-21 16:06:14,135 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:06:13" (1/1) ... [2021-12-21 16:06:14,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:06:13" (1/1) ... [2021-12-21 16:06:14,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:06:13" (1/1) ... [2021-12-21 16:06:14,269 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:06:13" (1/1) ... [2021-12-21 16:06:14,294 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:06:13" (1/1) ... [2021-12-21 16:06:14,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 16:06:14,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 16:06:14,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 16:06:14,329 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 16:06:14,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:06:13" (1/1) ... [2021-12-21 16:06:14,335 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 16:06:14,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 16:06:14,353 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 16:06:14,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 16:06:14,385 INFO L130 BoogieDeclarations]: Found specification of procedure write_reg [2021-12-21 16:06:14,386 INFO L138 BoogieDeclarations]: Found implementation of procedure write_reg [2021-12-21 16:06:14,386 INFO L130 BoogieDeclarations]: Found specification of procedure remove_wait_queue [2021-12-21 16:06:14,386 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_wait_queue [2021-12-21 16:06:14,386 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-12-21 16:06:14,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-21 16:06:14,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-21 16:06:14,386 INFO L130 BoogieDeclarations]: Found specification of procedure read_reg [2021-12-21 16:06:14,386 INFO L138 BoogieDeclarations]: Found implementation of procedure read_reg [2021-12-21 16:06:14,387 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-12-21 16:06:14,387 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-12-21 16:06:14,387 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-21 16:06:14,387 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-21 16:06:14,387 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-12-21 16:06:14,387 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-12-21 16:06:14,387 INFO L130 BoogieDeclarations]: Found specification of procedure set_signals [2021-12-21 16:06:14,387 INFO L138 BoogieDeclarations]: Found implementation of procedure set_signals [2021-12-21 16:06:14,388 INFO L130 BoogieDeclarations]: Found specification of procedure irq_test [2021-12-21 16:06:14,388 INFO L138 BoogieDeclarations]: Found implementation of procedure irq_test [2021-12-21 16:06:14,388 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_dma_bufs [2021-12-21 16:06:14,388 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_dma_bufs [2021-12-21 16:06:14,388 INFO L130 BoogieDeclarations]: Found specification of procedure hdlcdev_ioctl [2021-12-21 16:06:14,388 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlcdev_ioctl [2021-12-21 16:06:14,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-21 16:06:14,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-21 16:06:14,388 INFO L130 BoogieDeclarations]: Found specification of procedure flush_chars [2021-12-21 16:06:14,389 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_chars [2021-12-21 16:06:14,389 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap_nocache [2021-12-21 16:06:14,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap_nocache [2021-12-21 16:06:14,389 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-21 16:06:14,389 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-21 16:06:14,389 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-21 16:06:14,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-21 16:06:14,389 INFO L130 BoogieDeclarations]: Found specification of procedure tx_stop [2021-12-21 16:06:14,390 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_stop [2021-12-21 16:06:14,390 INFO L130 BoogieDeclarations]: Found specification of procedure sca_init [2021-12-21 16:06:14,390 INFO L138 BoogieDeclarations]: Found implementation of procedure sca_init [2021-12-21 16:06:14,390 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-12-21 16:06:14,390 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-12-21 16:06:14,390 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-12-21 16:06:14,391 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-12-21 16:06:14,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-21 16:06:14,391 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-21 16:06:14,391 INFO L130 BoogieDeclarations]: Found specification of procedure chars_in_buffer [2021-12-21 16:06:14,391 INFO L138 BoogieDeclarations]: Found implementation of procedure chars_in_buffer [2021-12-21 16:06:14,391 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-12-21 16:06:14,391 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-12-21 16:06:14,391 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2021-12-21 16:06:14,391 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2021-12-21 16:06:14,392 INFO L130 BoogieDeclarations]: Found specification of procedure change_params [2021-12-21 16:06:14,392 INFO L138 BoogieDeclarations]: Found implementation of procedure change_params [2021-12-21 16:06:14,392 INFO L130 BoogieDeclarations]: Found specification of procedure msleep_interruptible [2021-12-21 16:06:14,392 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep_interruptible [2021-12-21 16:06:14,392 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-21 16:06:14,393 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-21 16:06:14,393 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_change_mtu [2021-12-21 16:06:14,393 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_change_mtu [2021-12-21 16:06:14,394 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-21 16:06:14,394 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-21 16:06:14,394 INFO L130 BoogieDeclarations]: Found specification of procedure set_break [2021-12-21 16:06:14,394 INFO L138 BoogieDeclarations]: Found implementation of procedure set_break [2021-12-21 16:06:14,394 INFO L130 BoogieDeclarations]: Found specification of procedure tx_start [2021-12-21 16:06:14,395 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_start [2021-12-21 16:06:14,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 16:06:14,395 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-21 16:06:14,395 INFO L130 BoogieDeclarations]: Found specification of procedure startup [2021-12-21 16:06:14,395 INFO L138 BoogieDeclarations]: Found implementation of procedure startup [2021-12-21 16:06:14,395 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_frame_bufs [2021-12-21 16:06:14,395 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_frame_bufs [2021-12-21 16:06:14,395 INFO L130 BoogieDeclarations]: Found specification of procedure rx_free_frame_buffers [2021-12-21 16:06:14,395 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_free_frame_buffers [2021-12-21 16:06:14,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 16:06:14,396 INFO L130 BoogieDeclarations]: Found specification of procedure wait_until_sent [2021-12-21 16:06:14,396 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_until_sent [2021-12-21 16:06:14,396 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2021-12-21 16:06:14,396 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2021-12-21 16:06:14,396 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-21 16:06:14,397 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-21 16:06:14,397 INFO L130 BoogieDeclarations]: Found specification of procedure synclinkmp_cleanup [2021-12-21 16:06:14,397 INFO L138 BoogieDeclarations]: Found implementation of procedure synclinkmp_cleanup [2021-12-21 16:06:14,397 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_tty_port [2021-12-21 16:06:14,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_tty_port [2021-12-21 16:06:14,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 16:06:14,397 INFO L130 BoogieDeclarations]: Found specification of procedure dtr_rts [2021-12-21 16:06:14,397 INFO L138 BoogieDeclarations]: Found implementation of procedure dtr_rts [2021-12-21 16:06:14,397 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-12-21 16:06:14,398 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-12-21 16:06:14,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-21 16:06:14,398 INFO L130 BoogieDeclarations]: Found specification of procedure set_rate [2021-12-21 16:06:14,398 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rate [2021-12-21 16:06:14,398 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-21 16:06:14,398 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-21 16:06:14,399 INFO L130 BoogieDeclarations]: Found specification of procedure ioctl [2021-12-21 16:06:14,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ioctl [2021-12-21 16:06:14,399 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2021-12-21 16:06:14,399 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2021-12-21 16:06:14,400 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-21 16:06:14,400 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-21 16:06:14,400 INFO L130 BoogieDeclarations]: Found specification of procedure tiocmset [2021-12-21 16:06:14,400 INFO L138 BoogieDeclarations]: Found implementation of procedure tiocmset [2021-12-21 16:06:14,400 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-21 16:06:14,400 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-21 16:06:14,401 INFO L130 BoogieDeclarations]: Found specification of procedure add_wait_queue [2021-12-21 16:06:14,401 INFO L138 BoogieDeclarations]: Found implementation of procedure add_wait_queue [2021-12-21 16:06:14,401 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-21 16:06:14,401 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-21 16:06:14,401 INFO L130 BoogieDeclarations]: Found specification of procedure rx_stop [2021-12-21 16:06:14,401 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_stop [2021-12-21 16:06:14,401 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_test [2021-12-21 16:06:14,401 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_test [2021-12-21 16:06:14,402 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-12-21 16:06:14,402 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-12-21 16:06:14,402 INFO L130 BoogieDeclarations]: Found specification of procedure hdlcdev_tx_timeout [2021-12-21 16:06:14,402 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlcdev_tx_timeout [2021-12-21 16:06:14,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-21 16:06:14,402 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-21 16:06:14,402 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-21 16:06:14,403 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-21 16:06:14,403 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-21 16:06:14,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-21 16:06:14,405 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2021-12-21 16:06:14,405 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2021-12-21 16:06:14,405 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hung_up_p [2021-12-21 16:06:14,406 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hung_up_p [2021-12-21 16:06:14,406 INFO L130 BoogieDeclarations]: Found specification of procedure release_resources [2021-12-21 16:06:14,406 INFO L138 BoogieDeclarations]: Found implementation of procedure release_resources [2021-12-21 16:06:14,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 16:06:14,407 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-12-21 16:06:14,411 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-12-21 16:06:14,411 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-12-21 16:06:14,411 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-12-21 16:06:14,411 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2021-12-21 16:06:14,412 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2021-12-21 16:06:14,412 INFO L130 BoogieDeclarations]: Found specification of procedure tx_set_idle [2021-12-21 16:06:14,412 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_set_idle [2021-12-21 16:06:14,412 INFO L130 BoogieDeclarations]: Found specification of procedure set_termios [2021-12-21 16:06:14,412 INFO L138 BoogieDeclarations]: Found implementation of procedure set_termios [2021-12-21 16:06:14,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-21 16:06:14,412 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-21 16:06:14,412 INFO L130 BoogieDeclarations]: Found specification of procedure write_room [2021-12-21 16:06:14,412 INFO L138 BoogieDeclarations]: Found implementation of procedure write_room [2021-12-21 16:06:14,412 INFO L130 BoogieDeclarations]: Found specification of procedure enable_loopback [2021-12-21 16:06:14,413 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_loopback [2021-12-21 16:06:14,413 INFO L130 BoogieDeclarations]: Found specification of procedure install [2021-12-21 16:06:14,413 INFO L138 BoogieDeclarations]: Found implementation of procedure install [2021-12-21 16:06:14,413 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_destroy [2021-12-21 16:06:14,413 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_destroy [2021-12-21 16:06:14,413 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-21 16:06:14,413 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-21 16:06:14,413 INFO L130 BoogieDeclarations]: Found specification of procedure throttle [2021-12-21 16:06:14,413 INFO L138 BoogieDeclarations]: Found implementation of procedure throttle [2021-12-21 16:06:14,413 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2021-12-21 16:06:14,414 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2021-12-21 16:06:14,414 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-21 16:06:14,414 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-21 16:06:14,414 INFO L130 BoogieDeclarations]: Found specification of procedure tx_load_fifo [2021-12-21 16:06:14,414 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_load_fifo [2021-12-21 16:06:14,414 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_tty_port [2021-12-21 16:06:14,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_tty_port [2021-12-21 16:06:14,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 16:06:14,414 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-21 16:06:14,415 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-21 16:06:14,415 INFO L130 BoogieDeclarations]: Found specification of procedure tx_load_dma_buffer [2021-12-21 16:06:14,415 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_load_dma_buffer [2021-12-21 16:06:14,415 INFO L130 BoogieDeclarations]: Found specification of procedure program_hw [2021-12-21 16:06:14,415 INFO L138 BoogieDeclarations]: Found implementation of procedure program_hw [2021-12-21 16:06:14,415 INFO L130 BoogieDeclarations]: Found specification of procedure carrier_raised [2021-12-21 16:06:14,415 INFO L138 BoogieDeclarations]: Found implementation of procedure carrier_raised [2021-12-21 16:06:14,416 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-21 16:06:14,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-21 16:06:14,416 INFO L130 BoogieDeclarations]: Found specification of procedure reset_port [2021-12-21 16:06:14,416 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_port [2021-12-21 16:06:14,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 16:06:14,416 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-12-21 16:06:14,416 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-12-21 16:06:14,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 16:06:14,416 INFO L130 BoogieDeclarations]: Found specification of procedure tty_wakeup [2021-12-21 16:06:14,417 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_wakeup [2021-12-21 16:06:14,417 INFO L130 BoogieDeclarations]: Found specification of procedure register_test [2021-12-21 16:06:14,417 INFO L138 BoogieDeclarations]: Found implementation of procedure register_test [2021-12-21 16:06:14,417 INFO L130 BoogieDeclarations]: Found specification of procedure flush_buffer [2021-12-21 16:06:14,417 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_buffer [2021-12-21 16:06:14,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 16:06:14,417 INFO L130 BoogieDeclarations]: Found specification of procedure hangup [2021-12-21 16:06:14,417 INFO L138 BoogieDeclarations]: Found implementation of procedure hangup [2021-12-21 16:06:14,417 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-21 16:06:14,417 INFO L130 BoogieDeclarations]: Found specification of procedure get_icount [2021-12-21 16:06:14,418 INFO L138 BoogieDeclarations]: Found implementation of procedure get_icount [2021-12-21 16:06:14,418 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ops_disconnect_1 [2021-12-21 16:06:14,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ops_disconnect_1 [2021-12-21 16:06:14,418 INFO L130 BoogieDeclarations]: Found specification of procedure write_control_reg [2021-12-21 16:06:14,418 INFO L138 BoogieDeclarations]: Found implementation of procedure write_control_reg [2021-12-21 16:06:14,418 INFO L130 BoogieDeclarations]: Found specification of procedure put_char [2021-12-21 16:06:14,418 INFO L138 BoogieDeclarations]: Found implementation of procedure put_char [2021-12-21 16:06:14,418 INFO L130 BoogieDeclarations]: Found specification of procedure unthrottle [2021-12-21 16:06:14,418 INFO L138 BoogieDeclarations]: Found implementation of procedure unthrottle [2021-12-21 16:06:14,418 INFO L130 BoogieDeclarations]: Found specification of procedure tx_release [2021-12-21 16:06:14,419 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_release [2021-12-21 16:06:14,419 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-21 16:06:14,419 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-21 16:06:14,419 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-12-21 16:06:14,419 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-12-21 16:06:14,419 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_mode [2021-12-21 16:06:14,419 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_mode [2021-12-21 16:06:14,419 INFO L130 BoogieDeclarations]: Found specification of procedure rx_get_frame [2021-12-21 16:06:14,419 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_get_frame [2021-12-21 16:06:14,419 INFO L130 BoogieDeclarations]: Found specification of procedure shutdown [2021-12-21 16:06:14,420 INFO L138 BoogieDeclarations]: Found implementation of procedure shutdown [2021-12-21 16:06:14,420 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-12-21 16:06:14,420 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-12-21 16:06:14,420 INFO L130 BoogieDeclarations]: Found specification of procedure send_xchar [2021-12-21 16:06:14,420 INFO L138 BoogieDeclarations]: Found implementation of procedure send_xchar [2021-12-21 16:06:14,420 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-12-21 16:06:14,420 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-12-21 16:06:14,420 INFO L130 BoogieDeclarations]: Found specification of procedure tiocmget [2021-12-21 16:06:14,420 INFO L138 BoogieDeclarations]: Found implementation of procedure tiocmget [2021-12-21 16:06:14,420 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_ioctl [2021-12-21 16:06:14,421 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_ioctl [2021-12-21 16:06:14,421 INFO L130 BoogieDeclarations]: Found specification of procedure write_reg16 [2021-12-21 16:06:14,421 INFO L138 BoogieDeclarations]: Found implementation of procedure write_reg16 [2021-12-21 16:06:14,421 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-12-21 16:06:14,421 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-12-21 16:06:14,421 INFO L130 BoogieDeclarations]: Found specification of procedure get_signals [2021-12-21 16:06:14,421 INFO L138 BoogieDeclarations]: Found implementation of procedure get_signals [2021-12-21 16:06:14,422 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-21 16:06:14,422 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-21 16:06:14,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 16:06:14,422 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2021-12-21 16:06:14,422 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2021-12-21 16:06:14,422 INFO L130 BoogieDeclarations]: Found specification of procedure rx_start [2021-12-21 16:06:14,422 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_start [2021-12-21 16:06:14,422 INFO L130 BoogieDeclarations]: Found specification of procedure trace_block [2021-12-21 16:06:14,422 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_block [2021-12-21 16:06:14,422 INFO L130 BoogieDeclarations]: Found specification of procedure sanity_check [2021-12-21 16:06:14,423 INFO L138 BoogieDeclarations]: Found implementation of procedure sanity_check [2021-12-21 16:06:14,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 16:06:14,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 16:06:14,423 INFO L130 BoogieDeclarations]: Found specification of procedure read_status_reg [2021-12-21 16:06:14,423 INFO L138 BoogieDeclarations]: Found implementation of procedure read_status_reg [2021-12-21 16:06:15,150 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 16:06:15,153 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 16:06:42,593 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 16:06:42,617 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 16:06:42,617 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 16:06:42,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:06:42 BoogieIcfgContainer [2021-12-21 16:06:42,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 16:06:42,623 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 16:06:42,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 16:06:42,636 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 16:06:42,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 04:06:10" (1/3) ... [2021-12-21 16:06:42,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c6baaab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:06:42, skipping insertion in model container [2021-12-21 16:06:42,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:06:13" (2/3) ... [2021-12-21 16:06:42,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c6baaab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:06:42, skipping insertion in model container [2021-12-21 16:06:42,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:06:42" (3/3) ... [2021-12-21 16:06:42,638 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--tty--synclinkmp.ko-main.cil.out.i [2021-12-21 16:06:42,641 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 16:06:42,642 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 16:06:42,689 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 16:06:42,696 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 16:06:42,696 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 16:06:42,743 INFO L276 IsEmpty]: Start isEmpty. Operand has 2807 states, 1985 states have (on average 1.418639798488665) internal successors, (2816), 2042 states have internal predecessors, (2816), 710 states have call successors, (710), 110 states have call predecessors, (710), 110 states have return successors, (710), 704 states have call predecessors, (710), 710 states have call successors, (710) [2021-12-21 16:06:42,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-21 16:06:42,759 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:06:42,760 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:06:42,760 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:06:42,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:06:42,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1191751299, now seen corresponding path program 1 times [2021-12-21 16:06:42,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:06:42,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711345140] [2021-12-21 16:06:42,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:06:42,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:06:43,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:06:43,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 16:06:43,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:06:43,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711345140] [2021-12-21 16:06:43,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711345140] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:06:43,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:06:43,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 16:06:43,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601307138] [2021-12-21 16:06:43,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:06:43,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 16:06:43,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:06:43,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 16:06:43,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 16:06:43,221 INFO L87 Difference]: Start difference. First operand has 2807 states, 1985 states have (on average 1.418639798488665) internal successors, (2816), 2042 states have internal predecessors, (2816), 710 states have call successors, (710), 110 states have call predecessors, (710), 110 states have return successors, (710), 704 states have call predecessors, (710), 710 states have call successors, (710) Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 16:06:43,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:06:43,471 INFO L93 Difference]: Finished difference Result 5608 states and 8514 transitions. [2021-12-21 16:06:43,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 16:06:43,473 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-21 16:06:43,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:06:43,502 INFO L225 Difference]: With dead ends: 5608 [2021-12-21 16:06:43,502 INFO L226 Difference]: Without dead ends: 2800 [2021-12-21 16:06:43,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 16:06:43,523 INFO L933 BasicCegarLoop]: 4224 mSDtfsCounter, 4207 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4207 SdHoareTripleChecker+Valid, 4224 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 16:06:43,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4207 Valid, 4224 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 16:06:43,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2800 states. [2021-12-21 16:06:43,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2800 to 2800. [2021-12-21 16:06:43,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2800 states, 1981 states have (on average 1.4174659262998486) internal successors, (2808), 2035 states have internal predecessors, (2808), 709 states have call successors, (709), 110 states have call predecessors, (709), 109 states have return successors, (704), 698 states have call predecessors, (704), 704 states have call successors, (704) [2021-12-21 16:06:43,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2800 states to 2800 states and 4221 transitions. [2021-12-21 16:06:43,686 INFO L78 Accepts]: Start accepts. Automaton has 2800 states and 4221 transitions. Word has length 21 [2021-12-21 16:06:43,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:06:43,686 INFO L470 AbstractCegarLoop]: Abstraction has 2800 states and 4221 transitions. [2021-12-21 16:06:43,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 16:06:43,687 INFO L276 IsEmpty]: Start isEmpty. Operand 2800 states and 4221 transitions. [2021-12-21 16:06:43,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-21 16:06:43,690 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:06:43,691 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:06:43,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 16:06:43,691 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:06:43,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:06:43,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1711631940, now seen corresponding path program 1 times [2021-12-21 16:06:43,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:06:43,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537924278] [2021-12-21 16:06:43,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:06:43,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:06:43,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:06:43,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 16:06:43,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:06:43,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537924278] [2021-12-21 16:06:43,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537924278] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:06:43,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:06:43,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 16:06:43,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017807854] [2021-12-21 16:06:43,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:06:43,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 16:06:43,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:06:43,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 16:06:43,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 16:06:43,877 INFO L87 Difference]: Start difference. First operand 2800 states and 4221 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 16:06:43,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:06:43,973 INFO L93 Difference]: Finished difference Result 2802 states and 4222 transitions. [2021-12-21 16:06:43,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 16:06:43,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-21 16:06:43,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:06:43,989 INFO L225 Difference]: With dead ends: 2802 [2021-12-21 16:06:43,989 INFO L226 Difference]: Without dead ends: 2799 [2021-12-21 16:06:43,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 16:06:43,994 INFO L933 BasicCegarLoop]: 4218 mSDtfsCounter, 4200 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4200 SdHoareTripleChecker+Valid, 4218 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 16:06:43,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4200 Valid, 4218 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 16:06:43,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2799 states. [2021-12-21 16:06:44,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2799 to 2799. [2021-12-21 16:06:44,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2799 states, 1981 states have (on average 1.4169611307420495) internal successors, (2807), 2034 states have internal predecessors, (2807), 708 states have call successors, (708), 110 states have call predecessors, (708), 109 states have return successors, (704), 698 states have call predecessors, (704), 704 states have call successors, (704) [2021-12-21 16:06:44,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2799 states to 2799 states and 4219 transitions. [2021-12-21 16:06:44,069 INFO L78 Accepts]: Start accepts. Automaton has 2799 states and 4219 transitions. Word has length 22 [2021-12-21 16:06:44,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:06:44,069 INFO L470 AbstractCegarLoop]: Abstraction has 2799 states and 4219 transitions. [2021-12-21 16:06:44,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 16:06:44,070 INFO L276 IsEmpty]: Start isEmpty. Operand 2799 states and 4219 transitions. [2021-12-21 16:06:44,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-21 16:06:44,072 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:06:44,072 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:06:44,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 16:06:44,073 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:06:44,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:06:44,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1522194266, now seen corresponding path program 1 times [2021-12-21 16:06:44,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:06:44,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193100466] [2021-12-21 16:06:44,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:06:44,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:06:44,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:06:44,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 16:06:44,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:06:44,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193100466] [2021-12-21 16:06:44,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193100466] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:06:44,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:06:44,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 16:06:44,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569615163] [2021-12-21 16:06:44,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:06:44,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 16:06:44,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:06:44,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 16:06:44,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 16:06:44,213 INFO L87 Difference]: Start difference. First operand 2799 states and 4219 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 16:06:44,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:06:44,310 INFO L93 Difference]: Finished difference Result 2801 states and 4220 transitions. [2021-12-21 16:06:44,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 16:06:44,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-12-21 16:06:44,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:06:44,326 INFO L225 Difference]: With dead ends: 2801 [2021-12-21 16:06:44,326 INFO L226 Difference]: Without dead ends: 2798 [2021-12-21 16:06:44,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 16:06:44,334 INFO L933 BasicCegarLoop]: 4216 mSDtfsCounter, 4197 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4197 SdHoareTripleChecker+Valid, 4216 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 16:06:44,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4197 Valid, 4216 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 16:06:44,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2021-12-21 16:06:44,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2798. [2021-12-21 16:06:44,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2798 states, 1981 states have (on average 1.4164563351842503) internal successors, (2806), 2033 states have internal predecessors, (2806), 707 states have call successors, (707), 110 states have call predecessors, (707), 109 states have return successors, (704), 698 states have call predecessors, (704), 704 states have call successors, (704) [2021-12-21 16:06:44,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2798 states to 2798 states and 4217 transitions. [2021-12-21 16:06:44,420 INFO L78 Accepts]: Start accepts. Automaton has 2798 states and 4217 transitions. Word has length 23 [2021-12-21 16:06:44,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:06:44,420 INFO L470 AbstractCegarLoop]: Abstraction has 2798 states and 4217 transitions. [2021-12-21 16:06:44,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 16:06:44,420 INFO L276 IsEmpty]: Start isEmpty. Operand 2798 states and 4217 transitions. [2021-12-21 16:06:44,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-21 16:06:44,423 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:06:44,423 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:06:44,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 16:06:44,424 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:06:44,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:06:44,424 INFO L85 PathProgramCache]: Analyzing trace with hash 55411199, now seen corresponding path program 1 times [2021-12-21 16:06:44,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:06:44,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076683038] [2021-12-21 16:06:44,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:06:44,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:06:44,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:06:44,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 16:06:44,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:06:44,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076683038] [2021-12-21 16:06:44,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076683038] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:06:44,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:06:44,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 16:06:44,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965723745] [2021-12-21 16:06:44,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:06:44,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 16:06:44,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:06:44,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 16:06:44,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 16:06:44,522 INFO L87 Difference]: Start difference. First operand 2798 states and 4217 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 16:06:44,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:06:44,647 INFO L93 Difference]: Finished difference Result 3310 states and 4949 transitions. [2021-12-21 16:06:44,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 16:06:44,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-12-21 16:06:44,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:06:44,664 INFO L225 Difference]: With dead ends: 3310 [2021-12-21 16:06:44,664 INFO L226 Difference]: Without dead ends: 3299 [2021-12-21 16:06:44,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 16:06:44,667 INFO L933 BasicCegarLoop]: 4392 mSDtfsCounter, 4101 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4101 SdHoareTripleChecker+Valid, 5210 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 16:06:44,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4101 Valid, 5210 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 16:06:44,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3299 states. [2021-12-21 16:06:44,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3299 to 3299. [2021-12-21 16:06:44,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3299 states, 2310 states have (on average 1.4086580086580087) internal successors, (3254), 2371 states have internal predecessors, (3254), 841 states have call successors, (841), 148 states have call predecessors, (841), 147 states have return successors, (840), 832 states have call predecessors, (840), 840 states have call successors, (840) [2021-12-21 16:06:44,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3299 states to 3299 states and 4935 transitions. [2021-12-21 16:06:44,772 INFO L78 Accepts]: Start accepts. Automaton has 3299 states and 4935 transitions. Word has length 24 [2021-12-21 16:06:44,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:06:44,772 INFO L470 AbstractCegarLoop]: Abstraction has 3299 states and 4935 transitions. [2021-12-21 16:06:44,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 16:06:44,773 INFO L276 IsEmpty]: Start isEmpty. Operand 3299 states and 4935 transitions. [2021-12-21 16:06:44,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-21 16:06:44,780 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:06:44,781 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:06:44,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 16:06:44,871 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:06:44,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:06:44,872 INFO L85 PathProgramCache]: Analyzing trace with hash 2055295418, now seen corresponding path program 1 times [2021-12-21 16:06:44,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:06:44,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352066062] [2021-12-21 16:06:44,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:06:44,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:06:44,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:06:44,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 16:06:44,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:06:44,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 16:06:44,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:06:44,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 16:06:44,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:06:44,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 16:06:44,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:06:44,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:06:44,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:06:44,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 16:06:44,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:06:44,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352066062] [2021-12-21 16:06:44,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352066062] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:06:44,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:06:44,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 16:06:44,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30778674] [2021-12-21 16:06:44,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:06:44,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 16:06:44,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:06:44,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 16:06:44,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 16:06:44,988 INFO L87 Difference]: Start difference. First operand 3299 states and 4935 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 16:06:47,534 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:06:52,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:06:52,462 INFO L93 Difference]: Finished difference Result 8135 states and 12118 transitions. [2021-12-21 16:06:52,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 16:06:52,469 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 64 [2021-12-21 16:06:52,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:06:52,516 INFO L225 Difference]: With dead ends: 8135 [2021-12-21 16:06:52,516 INFO L226 Difference]: Without dead ends: 4839 [2021-12-21 16:06:52,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:06:52,532 INFO L933 BasicCegarLoop]: 4457 mSDtfsCounter, 3878 mSDsluCounter, 3193 mSDsCounter, 0 mSdLazyCounter, 3161 mSolverCounterSat, 1769 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4412 SdHoareTripleChecker+Valid, 7650 SdHoareTripleChecker+Invalid, 4931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1769 IncrementalHoareTripleChecker+Valid, 3161 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-12-21 16:06:52,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4412 Valid, 7650 Invalid, 4931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1769 Valid, 3161 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2021-12-21 16:06:52,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4839 states. [2021-12-21 16:06:52,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4839 to 4832. [2021-12-21 16:06:52,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4832 states, 3397 states have (on average 1.3979982337356491) internal successors, (4749), 3480 states have internal predecessors, (4749), 1211 states have call successors, (1211), 224 states have call predecessors, (1211), 223 states have return successors, (1210), 1199 states have call predecessors, (1210), 1210 states have call successors, (1210) [2021-12-21 16:06:52,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4832 states to 4832 states and 7170 transitions. [2021-12-21 16:06:52,698 INFO L78 Accepts]: Start accepts. Automaton has 4832 states and 7170 transitions. Word has length 64 [2021-12-21 16:06:52,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:06:52,698 INFO L470 AbstractCegarLoop]: Abstraction has 4832 states and 7170 transitions. [2021-12-21 16:06:52,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 16:06:52,699 INFO L276 IsEmpty]: Start isEmpty. Operand 4832 states and 7170 transitions. [2021-12-21 16:06:52,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-12-21 16:06:52,708 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:06:52,708 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:06:52,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 16:06:52,708 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:06:52,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:06:52,709 INFO L85 PathProgramCache]: Analyzing trace with hash 2068285400, now seen corresponding path program 1 times [2021-12-21 16:06:52,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:06:52,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044036735] [2021-12-21 16:06:52,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:06:52,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:06:52,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:06:52,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 16:06:52,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:06:52,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 16:06:52,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:06:52,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 16:06:52,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:06:52,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-21 16:06:52,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:06:52,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:06:52,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:06:52,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 16:06:52,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:06:52,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044036735] [2021-12-21 16:06:52,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044036735] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:06:52,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:06:52,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 16:06:52,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425796114] [2021-12-21 16:06:52,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:06:52,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 16:06:52,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:06:52,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 16:06:52,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 16:06:52,893 INFO L87 Difference]: Start difference. First operand 4832 states and 7170 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 16:06:55,611 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:06:57,601 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:07:03,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:07:03,761 INFO L93 Difference]: Finished difference Result 12517 states and 18605 transitions. [2021-12-21 16:07:03,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 16:07:03,762 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2021-12-21 16:07:03,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:07:03,859 INFO L225 Difference]: With dead ends: 12517 [2021-12-21 16:07:03,860 INFO L226 Difference]: Without dead ends: 7688 [2021-12-21 16:07:03,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:07:03,899 INFO L933 BasicCegarLoop]: 5476 mSDtfsCounter, 5093 mSDsluCounter, 3569 mSDsCounter, 0 mSdLazyCounter, 3511 mSolverCounterSat, 2438 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5666 SdHoareTripleChecker+Valid, 9045 SdHoareTripleChecker+Invalid, 5950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2438 IncrementalHoareTripleChecker+Valid, 3511 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2021-12-21 16:07:03,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5666 Valid, 9045 Invalid, 5950 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2438 Valid, 3511 Invalid, 1 Unknown, 0 Unchecked, 10.5s Time] [2021-12-21 16:07:03,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7688 states. [2021-12-21 16:07:04,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7688 to 7671. [2021-12-21 16:07:04,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7671 states, 5408 states have (on average 1.3903476331360947) internal successors, (7519), 5546 states have internal predecessors, (7519), 1901 states have call successors, (1901), 362 states have call predecessors, (1901), 361 states have return successors, (1900), 1881 states have call predecessors, (1900), 1900 states have call successors, (1900) [2021-12-21 16:07:04,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7671 states to 7671 states and 11320 transitions. [2021-12-21 16:07:04,390 INFO L78 Accepts]: Start accepts. Automaton has 7671 states and 11320 transitions. Word has length 81 [2021-12-21 16:07:04,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:07:04,390 INFO L470 AbstractCegarLoop]: Abstraction has 7671 states and 11320 transitions. [2021-12-21 16:07:04,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 16:07:04,390 INFO L276 IsEmpty]: Start isEmpty. Operand 7671 states and 11320 transitions. [2021-12-21 16:07:04,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-21 16:07:04,399 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:07:04,399 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:07:04,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 16:07:04,400 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:07:04,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:07:04,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1834541467, now seen corresponding path program 1 times [2021-12-21 16:07:04,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:07:04,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401667454] [2021-12-21 16:07:04,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:07:04,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:07:04,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:04,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 16:07:04,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:04,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 16:07:04,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:04,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-21 16:07:04,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:04,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 16:07:04,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:04,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:07:04,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:04,591 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 16:07:04,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:07:04,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401667454] [2021-12-21 16:07:04,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401667454] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:07:04,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:07:04,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 16:07:04,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552580951] [2021-12-21 16:07:04,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:07:04,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 16:07:04,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:07:04,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 16:07:04,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 16:07:04,595 INFO L87 Difference]: Start difference. First operand 7671 states and 11320 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 16:07:07,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:07:07,482 INFO L93 Difference]: Finished difference Result 15281 states and 22856 transitions. [2021-12-21 16:07:07,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 16:07:07,482 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2021-12-21 16:07:07,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:07:07,514 INFO L225 Difference]: With dead ends: 15281 [2021-12-21 16:07:07,514 INFO L226 Difference]: Without dead ends: 7613 [2021-12-21 16:07:07,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:07:07,546 INFO L933 BasicCegarLoop]: 3596 mSDtfsCounter, 4606 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 2094 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4855 SdHoareTripleChecker+Valid, 4633 SdHoareTripleChecker+Invalid, 2879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2094 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-21 16:07:07,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4855 Valid, 4633 Invalid, 2879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2094 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-21 16:07:07,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7613 states. [2021-12-21 16:07:07,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7613 to 7599. [2021-12-21 16:07:07,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7599 states, 5345 states have (on average 1.362020579981291) internal successors, (7280), 5480 states have internal predecessors, (7280), 1895 states have call successors, (1895), 359 states have call predecessors, (1895), 358 states have return successors, (1894), 1875 states have call predecessors, (1894), 1894 states have call successors, (1894) [2021-12-21 16:07:07,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7599 states to 7599 states and 11069 transitions. [2021-12-21 16:07:07,760 INFO L78 Accepts]: Start accepts. Automaton has 7599 states and 11069 transitions. Word has length 78 [2021-12-21 16:07:07,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:07:07,762 INFO L470 AbstractCegarLoop]: Abstraction has 7599 states and 11069 transitions. [2021-12-21 16:07:07,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 16:07:07,762 INFO L276 IsEmpty]: Start isEmpty. Operand 7599 states and 11069 transitions. [2021-12-21 16:07:07,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-21 16:07:07,770 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:07:07,770 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:07:07,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 16:07:07,770 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:07:07,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:07:07,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1410894745, now seen corresponding path program 1 times [2021-12-21 16:07:07,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:07:07,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393706168] [2021-12-21 16:07:07,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:07:07,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:07:07,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:07,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 16:07:07,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:07,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 16:07:07,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:07,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-21 16:07:07,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:07,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 16:07:07,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:07,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:07:07,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:07,914 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 16:07:07,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:07:07,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393706168] [2021-12-21 16:07:07,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393706168] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 16:07:07,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686403702] [2021-12-21 16:07:07,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:07:07,915 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 16:07:07,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 16:07:07,917 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 16:07:07,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 16:07:08,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:08,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 2846 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 16:07:08,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 16:07:08,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 16:07:08,862 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 16:07:08,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686403702] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:07:08,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 16:07:08,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2021-12-21 16:07:08,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892484560] [2021-12-21 16:07:08,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:07:08,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 16:07:08,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:07:08,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 16:07:08,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 16:07:08,864 INFO L87 Difference]: Start difference. First operand 7599 states and 11069 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-21 16:07:09,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:07:09,224 INFO L93 Difference]: Finished difference Result 15201 states and 22141 transitions. [2021-12-21 16:07:09,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 16:07:09,225 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 78 [2021-12-21 16:07:09,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:07:09,261 INFO L225 Difference]: With dead ends: 15201 [2021-12-21 16:07:09,261 INFO L226 Difference]: Without dead ends: 7599 [2021-12-21 16:07:09,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-21 16:07:09,288 INFO L933 BasicCegarLoop]: 4106 mSDtfsCounter, 1 mSDsluCounter, 8204 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 12310 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 16:07:09,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 12310 Invalid, 10 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 16:07:09,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7599 states. [2021-12-21 16:07:09,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7599 to 7599. [2021-12-21 16:07:09,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7599 states, 5345 states have (on average 1.3614593077642656) internal successors, (7277), 5480 states have internal predecessors, (7277), 1895 states have call successors, (1895), 359 states have call predecessors, (1895), 358 states have return successors, (1894), 1875 states have call predecessors, (1894), 1894 states have call successors, (1894) [2021-12-21 16:07:09,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7599 states to 7599 states and 11066 transitions. [2021-12-21 16:07:09,590 INFO L78 Accepts]: Start accepts. Automaton has 7599 states and 11066 transitions. Word has length 78 [2021-12-21 16:07:09,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:07:09,590 INFO L470 AbstractCegarLoop]: Abstraction has 7599 states and 11066 transitions. [2021-12-21 16:07:09,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-21 16:07:09,591 INFO L276 IsEmpty]: Start isEmpty. Operand 7599 states and 11066 transitions. [2021-12-21 16:07:09,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-21 16:07:09,602 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:07:09,602 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:07:09,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-21 16:07:09,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 16:07:09,815 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:07:09,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:07:09,816 INFO L85 PathProgramCache]: Analyzing trace with hash 2120349762, now seen corresponding path program 1 times [2021-12-21 16:07:09,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:07:09,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979848805] [2021-12-21 16:07:09,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:07:09,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:07:10,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:10,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 16:07:10,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:10,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 16:07:10,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:10,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-21 16:07:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:10,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 16:07:10,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:10,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 16:07:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:10,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 16:07:10,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:10,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:07:10,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:10,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 16:07:10,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:07:10,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979848805] [2021-12-21 16:07:10,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979848805] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 16:07:10,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996625805] [2021-12-21 16:07:10,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:07:10,441 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 16:07:10,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 16:07:10,442 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 16:07:10,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 16:07:12,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:12,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 7165 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-21 16:07:12,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 16:07:12,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 16:07:12,446 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 16:07:12,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996625805] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:07:12,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 16:07:12,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2021-12-21 16:07:12,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798181736] [2021-12-21 16:07:12,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:07:12,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 16:07:12,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:07:12,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 16:07:12,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-21 16:07:12,447 INFO L87 Difference]: Start difference. First operand 7599 states and 11066 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-21 16:07:13,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:07:13,043 INFO L93 Difference]: Finished difference Result 14871 states and 21622 transitions. [2021-12-21 16:07:13,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 16:07:13,046 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 97 [2021-12-21 16:07:13,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:07:13,088 INFO L225 Difference]: With dead ends: 14871 [2021-12-21 16:07:13,089 INFO L226 Difference]: Without dead ends: 7275 [2021-12-21 16:07:13,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-12-21 16:07:13,118 INFO L933 BasicCegarLoop]: 3764 mSDtfsCounter, 4121 mSDsluCounter, 10896 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4126 SdHoareTripleChecker+Valid, 14660 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 16:07:13,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4126 Valid, 14660 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 16:07:13,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7275 states. [2021-12-21 16:07:13,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7275 to 7275. [2021-12-21 16:07:13,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7275 states, 5097 states have (on average 1.3562880125564056) internal successors, (6913), 5226 states have internal predecessors, (6913), 1819 states have call successors, (1819), 359 states have call predecessors, (1819), 358 states have return successors, (1818), 1801 states have call predecessors, (1818), 1818 states have call successors, (1818) [2021-12-21 16:07:13,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7275 states to 7275 states and 10550 transitions. [2021-12-21 16:07:13,523 INFO L78 Accepts]: Start accepts. Automaton has 7275 states and 10550 transitions. Word has length 97 [2021-12-21 16:07:13,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:07:13,523 INFO L470 AbstractCegarLoop]: Abstraction has 7275 states and 10550 transitions. [2021-12-21 16:07:13,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-21 16:07:13,523 INFO L276 IsEmpty]: Start isEmpty. Operand 7275 states and 10550 transitions. [2021-12-21 16:07:13,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-21 16:07:13,534 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:07:13,534 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:07:13,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-21 16:07:13,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-12-21 16:07:13,747 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:07:13,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:07:13,748 INFO L85 PathProgramCache]: Analyzing trace with hash -556652774, now seen corresponding path program 1 times [2021-12-21 16:07:13,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:07:13,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876712791] [2021-12-21 16:07:13,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:07:13,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:07:14,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:14,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 16:07:14,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:14,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 16:07:14,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:14,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-21 16:07:14,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:14,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-21 16:07:14,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:14,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 16:07:14,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:14,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 16:07:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:14,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:07:14,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:07:14,429 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 16:07:14,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:07:14,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876712791] [2021-12-21 16:07:14,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876712791] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 16:07:14,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809817061] [2021-12-21 16:07:14,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:07:14,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 16:07:14,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 16:07:14,444 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 16:07:14,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process