./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ed18c341b13cb38f54b1bbde59f9cd5a73bcebd88430e5620ebca0060f7baed5 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:45:10,825 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:45:10,827 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:45:10,868 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:45:10,869 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:45:10,872 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:45:10,874 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:45:10,876 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:45:10,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:45:10,883 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:45:10,883 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:45:10,884 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:45:10,885 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:45:10,886 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:45:10,888 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:45:10,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:45:10,893 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:45:10,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:45:10,896 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:45:10,898 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:45:10,902 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:45:10,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:45:10,904 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:45:10,905 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:45:10,909 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:45:10,909 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:45:10,909 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:45:10,911 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:45:10,911 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:45:10,912 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:45:10,912 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:45:10,913 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:45:10,913 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:45:10,914 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:45:10,915 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:45:10,916 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:45:10,916 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:45:10,916 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:45:10,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:45:10,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:45:10,918 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:45:10,918 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 17:45:10,949 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:45:10,949 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:45:10,949 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:45:10,950 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:45:10,950 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:45:10,951 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:45:10,951 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:45:10,951 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:45:10,951 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:45:10,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:45:10,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 17:45:10,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:45:10,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:45:10,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:45:10,953 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:45:10,953 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:45:10,953 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:45:10,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:45:10,954 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:45:10,954 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:45:10,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:45:10,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:45:10,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:45:10,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:45:10,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:45:10,955 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 17:45:10,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 17:45:10,955 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:45:10,955 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:45:10,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:45:10,955 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:45:10,956 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ed18c341b13cb38f54b1bbde59f9cd5a73bcebd88430e5620ebca0060f7baed5 [2021-12-14 17:45:11,130 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:45:11,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:45:11,149 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:45:11,150 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:45:11,151 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:45:11,152 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i [2021-12-14 17:45:11,216 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/179217343/6a435dac6b1a42a9bfa434d44c1dbf8d/FLAG84dcc5864 [2021-12-14 17:45:11,871 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:45:11,872 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i [2021-12-14 17:45:11,912 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/179217343/6a435dac6b1a42a9bfa434d44c1dbf8d/FLAG84dcc5864 [2021-12-14 17:45:12,241 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/179217343/6a435dac6b1a42a9bfa434d44c1dbf8d [2021-12-14 17:45:12,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:45:12,244 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:45:12,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:45:12,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:45:12,247 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:45:12,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:45:12" (1/1) ... [2021-12-14 17:45:12,248 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@144f7f86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:45:12, skipping insertion in model container [2021-12-14 17:45:12,248 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:45:12" (1/1) ... [2021-12-14 17:45:12,252 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:45:12,341 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:45:13,543 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i[198800,198813] [2021-12-14 17:45:14,183 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:45:14,228 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:45:14,358 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i[198800,198813] [2021-12-14 17:45:14,502 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:45:14,594 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:45:14,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:45:14 WrapperNode [2021-12-14 17:45:14,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:45:14,597 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:45:14,597 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:45:14,597 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:45:14,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:45:14" (1/1) ... [2021-12-14 17:45:14,677 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:45:14" (1/1) ... [2021-12-14 17:45:14,840 INFO L137 Inliner]: procedures = 375, calls = 2229, calls flagged for inlining = 193, calls inlined = 191, statements flattened = 6424 [2021-12-14 17:45:14,841 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:45:14,842 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:45:14,842 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:45:14,842 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:45:14,848 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:45:14" (1/1) ... [2021-12-14 17:45:14,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:45:14" (1/1) ... [2021-12-14 17:45:14,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:45:14" (1/1) ... [2021-12-14 17:45:14,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:45:14" (1/1) ... [2021-12-14 17:45:15,007 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:45:14" (1/1) ... [2021-12-14 17:45:15,032 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:45:14" (1/1) ... [2021-12-14 17:45:15,059 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:45:14" (1/1) ... [2021-12-14 17:45:15,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:45:15,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:45:15,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:45:15,093 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:45:15,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:45:14" (1/1) ... [2021-12-14 17:45:15,099 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:45:15,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:45:15,120 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 17:45:15,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 17:45:15,149 INFO L130 BoogieDeclarations]: Found specification of procedure sk_unattached_filter_destroy [2021-12-14 17:45:15,150 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_unattached_filter_destroy [2021-12-14 17:45:15,150 INFO L130 BoogieDeclarations]: Found specification of procedure find_comp_entry [2021-12-14 17:45:15,150 INFO L138 BoogieDeclarations]: Found implementation of procedure find_comp_entry [2021-12-14 17:45:15,150 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-12-14 17:45:15,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-12-14 17:45:15,150 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock_bh [2021-12-14 17:45:15,150 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock_bh [2021-12-14 17:45:15,150 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-12-14 17:45:15,151 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock_bh [2021-12-14 17:45:15,151 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock_bh [2021-12-14 17:45:15,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-14 17:45:15,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-14 17:45:15,151 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-14 17:45:15,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-14 17:45:15,151 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2021-12-14 17:45:15,151 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2021-12-14 17:45:15,152 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2021-12-14 17:45:15,152 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2021-12-14 17:45:15,152 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_xmit_process [2021-12-14 17:45:15,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_xmit_process [2021-12-14 17:45:15,152 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_unlink [2021-12-14 17:45:15,152 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_unlink [2021-12-14 17:45:15,152 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_shutdown_interface [2021-12-14 17:45:15,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_shutdown_interface [2021-12-14 17:45:15,153 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_destroy_interface [2021-12-14 17:45:15,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_destroy_interface [2021-12-14 17:45:15,153 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-12-14 17:45:15,153 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-12-14 17:45:15,153 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-12-14 17:45:15,153 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-12-14 17:45:15,153 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-14 17:45:15,154 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-14 17:45:15,154 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 17:45:15,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 17:45:15,154 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_lock_bh [2021-12-14 17:45:15,154 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_lock_bh [2021-12-14 17:45:15,154 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_push [2021-12-14 17:45:15,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_push [2021-12-14 17:45:15,155 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-12-14 17:45:15,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-12-14 17:45:15,155 INFO L130 BoogieDeclarations]: Found specification of procedure unit_find [2021-12-14 17:45:15,155 INFO L138 BoogieDeclarations]: Found implementation of procedure unit_find [2021-12-14 17:45:15,155 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-14 17:45:15,156 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-14 17:45:15,156 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_expand_head [2021-12-14 17:45:15,156 INFO L138 BoogieDeclarations]: Found implementation of procedure pskb_expand_head [2021-12-14 17:45:15,156 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 17:45:15,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 17:45:15,156 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_be16 [2021-12-14 17:45:15,156 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_be16 [2021-12-14 17:45:15,156 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-12-14 17:45:15,157 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-12-14 17:45:15,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-14 17:45:15,157 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-14 17:45:15,157 INFO L130 BoogieDeclarations]: Found specification of procedure init_ppp_file [2021-12-14 17:45:15,158 INFO L138 BoogieDeclarations]: Found implementation of procedure init_ppp_file [2021-12-14 17:45:15,158 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 17:45:15,158 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 17:45:15,159 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-12-14 17:45:15,159 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-12-14 17:45:15,159 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-14 17:45:15,159 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-14 17:45:15,159 INFO L130 BoogieDeclarations]: Found specification of procedure skb_peek [2021-12-14 17:45:15,159 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_peek [2021-12-14 17:45:15,159 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_19 [2021-12-14 17:45:15,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_19 [2021-12-14 17:45:15,160 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_release [2021-12-14 17:45:15,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_release [2021-12-14 17:45:15,160 INFO L130 BoogieDeclarations]: Found specification of procedure get_filter [2021-12-14 17:45:15,160 INFO L138 BoogieDeclarations]: Found implementation of procedure get_filter [2021-12-14 17:45:15,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:45:15,160 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-14 17:45:15,160 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-14 17:45:15,161 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2021-12-14 17:45:15,161 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2021-12-14 17:45:15,161 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2021-12-14 17:45:15,161 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2021-12-14 17:45:15,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:45:15,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2021-12-14 17:45:15,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2021-12-14 17:45:15,162 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_get_stats64 [2021-12-14 17:45:15,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_get_stats64 [2021-12-14 17:45:15,162 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2021-12-14 17:45:15,162 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2021-12-14 17:45:15,162 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-12-14 17:45:15,162 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-12-14 17:45:15,163 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_send_frame [2021-12-14 17:45:15,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_send_frame [2021-12-14 17:45:15,163 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-14 17:45:15,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-14 17:45:15,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:45:15,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:45:15,164 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_receive_error [2021-12-14 17:45:15,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_receive_error [2021-12-14 17:45:15,164 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_find_unit [2021-12-14 17:45:15,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_find_unit [2021-12-14 17:45:15,165 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-14 17:45:15,165 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-14 17:45:15,165 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-12-14 17:45:15,165 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-12-14 17:45:15,166 INFO L130 BoogieDeclarations]: Found specification of procedure sk_unattached_filter_create [2021-12-14 17:45:15,166 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_unattached_filter_create [2021-12-14 17:45:15,166 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-14 17:45:15,166 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-14 17:45:15,166 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-14 17:45:15,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-14 17:45:15,166 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_channel_push [2021-12-14 17:45:15,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_channel_push [2021-12-14 17:45:15,167 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-14 17:45:15,167 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-14 17:45:15,167 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-14 17:45:15,167 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-14 17:45:15,167 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-14 17:45:15,168 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-14 17:45:15,168 INFO L130 BoogieDeclarations]: Found specification of procedure find_compressor [2021-12-14 17:45:15,168 INFO L138 BoogieDeclarations]: Found implementation of procedure find_compressor [2021-12-14 17:45:15,168 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_pernet [2021-12-14 17:45:15,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_pernet [2021-12-14 17:45:15,170 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-14 17:45:15,170 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-14 17:45:15,171 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-12-14 17:45:15,171 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-12-14 17:45:15,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-14 17:45:15,172 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-14 17:45:15,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-14 17:45:15,173 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-14 17:45:15,173 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-14 17:45:15,177 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_pernet_device [2021-12-14 17:45:15,177 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_pernet_device [2021-12-14 17:45:15,177 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-14 17:45:15,177 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-14 17:45:15,177 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_disconnect_channel [2021-12-14 17:45:15,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_disconnect_channel [2021-12-14 17:45:15,178 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_net_ioctl [2021-12-14 17:45:15,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_net_ioctl [2021-12-14 17:45:15,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-14 17:45:15,178 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_unlock_bh [2021-12-14 17:45:15,178 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_unlock_bh [2021-12-14 17:45:15,178 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-12-14 17:45:15,178 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-12-14 17:45:15,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 17:45:15,178 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-12-14 17:45:15,179 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-12-14 17:45:15,179 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2021-12-14 17:45:15,179 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2021-12-14 17:45:15,179 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_output_wakeup [2021-12-14 17:45:15,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_output_wakeup [2021-12-14 17:45:15,179 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_exit_net [2021-12-14 17:45:15,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_exit_net [2021-12-14 17:45:15,179 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_free [2021-12-14 17:45:15,179 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_free [2021-12-14 17:45:15,180 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2021-12-14 17:45:15,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2021-12-14 17:45:15,180 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2021-12-14 17:45:15,180 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2021-12-14 17:45:15,180 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_do_recv [2021-12-14 17:45:15,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_do_recv [2021-12-14 17:45:15,180 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_unregister_channel [2021-12-14 17:45:15,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_unregister_channel [2021-12-14 17:45:15,180 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be16 [2021-12-14 17:45:15,180 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be16 [2021-12-14 17:45:15,181 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_skb_16 [2021-12-14 17:45:15,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_skb_16 [2021-12-14 17:45:15,181 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2021-12-14 17:45:15,181 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2021-12-14 17:45:15,181 INFO L130 BoogieDeclarations]: Found specification of procedure proto_to_npindex [2021-12-14 17:45:15,181 INFO L138 BoogieDeclarations]: Found implementation of procedure proto_to_npindex [2021-12-14 17:45:15,181 INFO L130 BoogieDeclarations]: Found specification of procedure net_generic [2021-12-14 17:45:15,181 INFO L138 BoogieDeclarations]: Found implementation of procedure net_generic [2021-12-14 17:45:15,181 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2021-12-14 17:45:15,182 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2021-12-14 17:45:15,182 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-14 17:45:15,182 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-14 17:45:15,182 INFO L130 BoogieDeclarations]: Found specification of procedure unit_put [2021-12-14 17:45:15,182 INFO L138 BoogieDeclarations]: Found implementation of procedure unit_put [2021-12-14 17:45:15,182 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_receive_nonmp_frame [2021-12-14 17:45:15,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_receive_nonmp_frame [2021-12-14 17:45:15,182 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_purge [2021-12-14 17:45:15,182 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_purge [2021-12-14 17:45:15,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 17:45:15,183 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-14 17:45:15,183 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-14 17:45:15,183 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2021-12-14 17:45:15,183 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2021-12-14 17:45:15,183 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2021-12-14 17:45:15,183 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2021-12-14 17:45:15,183 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_write [2021-12-14 17:45:15,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_write [2021-12-14 17:45:15,184 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 17:45:15,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 17:45:15,184 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_ccp_closed [2021-12-14 17:45:15,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_ccp_closed [2021-12-14 17:45:15,184 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_open [2021-12-14 17:45:15,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_open [2021-12-14 17:45:15,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:45:15,184 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-12-14 17:45:15,184 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-12-14 17:45:15,185 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-12-14 17:45:15,185 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-12-14 17:45:15,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:45:15,185 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-12-14 17:45:15,185 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-12-14 17:45:15,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:45:15,185 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-12-14 17:45:15,185 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-12-14 17:45:15,185 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-14 17:45:15,186 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~$Pointer$ [2021-12-14 17:45:15,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~$Pointer$ [2021-12-14 17:45:15,186 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-14 17:45:15,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-14 17:45:15,186 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-12-14 17:45:15,186 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-12-14 17:45:15,186 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2021-12-14 17:45:15,186 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2021-12-14 17:45:15,186 INFO L130 BoogieDeclarations]: Found specification of procedure idr_alloc [2021-12-14 17:45:15,187 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_alloc [2021-12-14 17:45:15,187 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-12-14 17:45:15,187 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-12-14 17:45:15,187 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-14 17:45:15,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-14 17:45:15,187 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-12-14 17:45:15,187 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-12-14 17:45:15,187 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_long_read [2021-12-14 17:45:15,188 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_long_read [2021-12-14 17:45:15,188 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-12-14 17:45:15,188 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-12-14 17:45:15,188 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2021-12-14 17:45:15,188 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2021-12-14 17:45:15,188 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-12-14 17:45:15,188 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-12-14 17:45:15,188 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_register_net_channel [2021-12-14 17:45:15,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_register_net_channel [2021-12-14 17:45:15,189 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-14 17:45:15,189 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-14 17:45:15,189 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_mp_explode [2021-12-14 17:45:15,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_mp_explode [2021-12-14 17:45:15,189 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_may_pull [2021-12-14 17:45:15,189 INFO L138 BoogieDeclarations]: Found implementation of procedure pskb_may_pull [2021-12-14 17:45:15,189 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-14 17:45:15,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-14 17:45:15,189 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_ioctl [2021-12-14 17:45:15,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_ioctl [2021-12-14 17:45:15,190 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_ccp_peek [2021-12-14 17:45:15,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_ccp_peek [2021-12-14 17:45:15,191 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_44 [2021-12-14 17:45:15,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_44 [2021-12-14 17:45:15,193 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_poll [2021-12-14 17:45:15,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_poll [2021-12-14 17:45:15,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 17:45:15,193 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_destroy_channel [2021-12-14 17:45:15,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_destroy_channel [2021-12-14 17:45:15,194 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-12-14 17:45:15,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-12-14 17:45:15,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:45:15,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:45:15,195 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-14 17:45:15,195 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-14 17:45:15,195 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-12-14 17:45:15,195 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-12-14 17:45:15,870 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:45:15,873 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:45:16,291 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-14 17:45:18,701 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:45:18,725 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:45:18,726 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-14 17:45:18,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:45:18 BoogieIcfgContainer [2021-12-14 17:45:18,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:45:18,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:45:18,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:45:18,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:45:18,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:45:12" (1/3) ... [2021-12-14 17:45:18,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c1bc667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:45:18, skipping insertion in model container [2021-12-14 17:45:18,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:45:14" (2/3) ... [2021-12-14 17:45:18,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c1bc667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:45:18, skipping insertion in model container [2021-12-14 17:45:18,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:45:18" (3/3) ... [2021-12-14 17:45:18,735 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i [2021-12-14 17:45:18,739 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:45:18,739 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:45:18,787 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:45:18,793 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 17:45:18,793 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:45:18,831 INFO L276 IsEmpty]: Start isEmpty. Operand has 2163 states, 1526 states have (on average 1.374180865006553) internal successors, (2097), 1585 states have internal predecessors, (2097), 515 states have call successors, (515), 121 states have call predecessors, (515), 120 states have return successors, (510), 497 states have call predecessors, (510), 510 states have call successors, (510) [2021-12-14 17:45:18,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-14 17:45:18,839 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:45:18,840 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:45:18,840 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:45:18,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:45:18,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1166428172, now seen corresponding path program 1 times [2021-12-14 17:45:18,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:45:18,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075883039] [2021-12-14 17:45:18,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:45:18,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:45:19,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:19,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:45:19,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:19,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:45:19,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:19,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:45:19,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:19,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:45:19,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:19,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:45:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:19,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:45:19,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:19,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-14 17:45:19,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:19,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-14 17:45:19,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:19,373 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-14 17:45:19,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:45:19,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075883039] [2021-12-14 17:45:19,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075883039] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:45:19,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:45:19,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 17:45:19,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859042317] [2021-12-14 17:45:19,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:45:19,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:45:19,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:45:19,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:45:19,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:45:19,412 INFO L87 Difference]: Start difference. First operand has 2163 states, 1526 states have (on average 1.374180865006553) internal successors, (2097), 1585 states have internal predecessors, (2097), 515 states have call successors, (515), 121 states have call predecessors, (515), 120 states have return successors, (510), 497 states have call predecessors, (510), 510 states have call successors, (510) Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-14 17:45:26,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:45:26,259 INFO L93 Difference]: Finished difference Result 7078 states and 10935 transitions. [2021-12-14 17:45:26,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:45:26,262 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 69 [2021-12-14 17:45:26,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:45:26,329 INFO L225 Difference]: With dead ends: 7078 [2021-12-14 17:45:26,330 INFO L226 Difference]: Without dead ends: 4873 [2021-12-14 17:45:26,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-14 17:45:26,356 INFO L933 BasicCegarLoop]: 3749 mSDtfsCounter, 4507 mSDsluCounter, 10815 mSDsCounter, 0 mSdLazyCounter, 4225 mSolverCounterSat, 1594 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4880 SdHoareTripleChecker+Valid, 14564 SdHoareTripleChecker+Invalid, 5819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1594 IncrementalHoareTripleChecker+Valid, 4225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-12-14 17:45:26,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4880 Valid, 14564 Invalid, 5819 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1594 Valid, 4225 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2021-12-14 17:45:26,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4873 states. [2021-12-14 17:45:26,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4873 to 4383. [2021-12-14 17:45:26,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4383 states, 3101 states have (on average 1.366010964205095) internal successors, (4236), 3214 states have internal predecessors, (4236), 1025 states have call successors, (1025), 239 states have call predecessors, (1025), 256 states have return successors, (1194), 1010 states have call predecessors, (1194), 1024 states have call successors, (1194) [2021-12-14 17:45:26,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4383 states to 4383 states and 6455 transitions. [2021-12-14 17:45:26,669 INFO L78 Accepts]: Start accepts. Automaton has 4383 states and 6455 transitions. Word has length 69 [2021-12-14 17:45:26,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:45:26,671 INFO L470 AbstractCegarLoop]: Abstraction has 4383 states and 6455 transitions. [2021-12-14 17:45:26,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-14 17:45:26,671 INFO L276 IsEmpty]: Start isEmpty. Operand 4383 states and 6455 transitions. [2021-12-14 17:45:26,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-14 17:45:26,684 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:45:26,684 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 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] [2021-12-14 17:45:26,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 17:45:26,685 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:45:26,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:45:26,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1147589655, now seen corresponding path program 1 times [2021-12-14 17:45:26,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:45:26,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233908996] [2021-12-14 17:45:26,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:45:26,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:45:26,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:26,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:45:26,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:26,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:45:26,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:26,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:45:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:26,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:45:26,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:26,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:45:26,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:26,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:45:26,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:26,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-14 17:45:26,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:26,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-14 17:45:26,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:26,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-14 17:45:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:26,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 17:45:26,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:26,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-14 17:45:26,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:26,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:45:26,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:26,941 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-14 17:45:26,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:45:26,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233908996] [2021-12-14 17:45:26,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233908996] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:45:26,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:45:26,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:45:26,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966823737] [2021-12-14 17:45:26,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:45:26,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:45:26,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:45:26,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:45:26,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:45:26,947 INFO L87 Difference]: Start difference. First operand 4383 states and 6455 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-14 17:45:36,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:45:36,499 INFO L93 Difference]: Finished difference Result 14573 states and 22266 transitions. [2021-12-14 17:45:36,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 17:45:36,519 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 105 [2021-12-14 17:45:36,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:45:36,601 INFO L225 Difference]: With dead ends: 14573 [2021-12-14 17:45:36,601 INFO L226 Difference]: Without dead ends: 10210 [2021-12-14 17:45:36,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-14 17:45:36,624 INFO L933 BasicCegarLoop]: 3674 mSDtfsCounter, 6508 mSDsluCounter, 5230 mSDsCounter, 0 mSdLazyCounter, 4692 mSolverCounterSat, 3349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6847 SdHoareTripleChecker+Valid, 8904 SdHoareTripleChecker+Invalid, 8041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3349 IncrementalHoareTripleChecker+Valid, 4692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2021-12-14 17:45:36,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6847 Valid, 8904 Invalid, 8041 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3349 Valid, 4692 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2021-12-14 17:45:36,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10210 states. [2021-12-14 17:45:37,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10210 to 8739. [2021-12-14 17:45:37,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8739 states, 6145 states have (on average 1.3549227013832383) internal successors, (8326), 6389 states have internal predecessors, (8326), 2045 states have call successors, (2045), 467 states have call predecessors, (2045), 548 states have return successors, (2783), 2053 states have call predecessors, (2783), 2044 states have call successors, (2783) [2021-12-14 17:45:37,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8739 states to 8739 states and 13154 transitions. [2021-12-14 17:45:37,065 INFO L78 Accepts]: Start accepts. Automaton has 8739 states and 13154 transitions. Word has length 105 [2021-12-14 17:45:37,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:45:37,067 INFO L470 AbstractCegarLoop]: Abstraction has 8739 states and 13154 transitions. [2021-12-14 17:45:37,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-14 17:45:37,067 INFO L276 IsEmpty]: Start isEmpty. Operand 8739 states and 13154 transitions. [2021-12-14 17:45:37,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-14 17:45:37,072 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:45:37,073 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 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] [2021-12-14 17:45:37,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 17:45:37,073 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:45:37,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:45:37,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1215083750, now seen corresponding path program 1 times [2021-12-14 17:45:37,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:45:37,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55804554] [2021-12-14 17:45:37,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:45:37,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:45:37,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:37,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:45:37,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:37,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:45:37,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:37,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:45:37,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:37,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:45:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:37,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:45:37,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:37,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:45:37,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:37,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-14 17:45:37,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:37,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-14 17:45:37,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:37,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 17:45:37,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:37,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:45:37,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:37,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:45:37,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:37,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:45:37,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:37,379 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-12-14 17:45:37,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:45:37,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55804554] [2021-12-14 17:45:37,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55804554] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:45:37,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:45:37,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 17:45:37,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475213374] [2021-12-14 17:45:37,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:45:37,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:45:37,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:45:37,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:45:37,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:45:37,383 INFO L87 Difference]: Start difference. First operand 8739 states and 13154 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-14 17:45:48,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:45:48,165 INFO L93 Difference]: Finished difference Result 25654 states and 39179 transitions. [2021-12-14 17:45:48,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:45:48,170 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2021-12-14 17:45:48,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:45:48,258 INFO L225 Difference]: With dead ends: 25654 [2021-12-14 17:45:48,259 INFO L226 Difference]: Without dead ends: 16935 [2021-12-14 17:45:48,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:45:48,299 INFO L933 BasicCegarLoop]: 4567 mSDtfsCounter, 3103 mSDsluCounter, 7852 mSDsCounter, 0 mSdLazyCounter, 5915 mSolverCounterSat, 1124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3385 SdHoareTripleChecker+Valid, 12419 SdHoareTripleChecker+Invalid, 7039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1124 IncrementalHoareTripleChecker+Valid, 5915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:45:48,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3385 Valid, 12419 Invalid, 7039 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1124 Valid, 5915 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2021-12-14 17:45:48,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16935 states. [2021-12-14 17:45:48,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16935 to 14784. [2021-12-14 17:45:48,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14784 states, 10413 states have (on average 1.3509075194468454) internal successors, (14067), 10863 states have internal predecessors, (14067), 3359 states have call successors, (3359), 865 states have call predecessors, (3359), 1011 states have return successors, (4661), 3369 states have call predecessors, (4661), 3358 states have call successors, (4661) [2021-12-14 17:45:48,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14784 states to 14784 states and 22087 transitions. [2021-12-14 17:45:48,925 INFO L78 Accepts]: Start accepts. Automaton has 14784 states and 22087 transitions. Word has length 108 [2021-12-14 17:45:48,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:45:48,925 INFO L470 AbstractCegarLoop]: Abstraction has 14784 states and 22087 transitions. [2021-12-14 17:45:48,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-14 17:45:48,926 INFO L276 IsEmpty]: Start isEmpty. Operand 14784 states and 22087 transitions. [2021-12-14 17:45:48,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-14 17:45:48,934 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:45:48,935 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:45:48,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 17:45:48,935 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:45:48,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:45:48,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1577830905, now seen corresponding path program 1 times [2021-12-14 17:45:48,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:45:48,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358813820] [2021-12-14 17:45:48,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:45:48,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:45:48,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:49,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:45:49,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:49,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:45:49,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:49,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:45:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:49,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:45:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:49,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:45:49,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:49,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:45:49,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:49,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-14 17:45:49,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:49,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-14 17:45:49,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:49,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 17:45:49,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:49,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 17:45:49,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:49,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 17:45:49,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:49,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 17:45:49,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:49,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:45:49,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:49,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:45:49,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:49,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:45:49,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:49,187 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-12-14 17:45:49,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:45:49,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358813820] [2021-12-14 17:45:49,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358813820] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:45:49,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:45:49,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 17:45:49,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194516266] [2021-12-14 17:45:49,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:45:49,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:45:49,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:45:49,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:45:49,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:45:49,190 INFO L87 Difference]: Start difference. First operand 14784 states and 22087 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-14 17:45:55,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:45:55,206 INFO L93 Difference]: Finished difference Result 31679 states and 48084 transitions. [2021-12-14 17:45:55,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 17:45:55,206 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 142 [2021-12-14 17:45:55,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:45:55,312 INFO L225 Difference]: With dead ends: 31679 [2021-12-14 17:45:55,313 INFO L226 Difference]: Without dead ends: 16915 [2021-12-14 17:45:55,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:45:55,372 INFO L933 BasicCegarLoop]: 2886 mSDtfsCounter, 3789 mSDsluCounter, 3542 mSDsCounter, 0 mSdLazyCounter, 3047 mSolverCounterSat, 1071 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4123 SdHoareTripleChecker+Valid, 6428 SdHoareTripleChecker+Invalid, 4118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1071 IncrementalHoareTripleChecker+Valid, 3047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-12-14 17:45:55,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4123 Valid, 6428 Invalid, 4118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1071 Valid, 3047 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2021-12-14 17:45:55,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16915 states. [2021-12-14 17:45:55,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16915 to 14784. [2021-12-14 17:45:55,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14784 states, 10413 states have (on average 1.3501392490156534) internal successors, (14059), 10863 states have internal predecessors, (14059), 3359 states have call successors, (3359), 865 states have call predecessors, (3359), 1011 states have return successors, (4661), 3369 states have call predecessors, (4661), 3358 states have call successors, (4661) [2021-12-14 17:45:55,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14784 states to 14784 states and 22079 transitions. [2021-12-14 17:45:55,976 INFO L78 Accepts]: Start accepts. Automaton has 14784 states and 22079 transitions. Word has length 142 [2021-12-14 17:45:55,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:45:55,976 INFO L470 AbstractCegarLoop]: Abstraction has 14784 states and 22079 transitions. [2021-12-14 17:45:55,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-14 17:45:55,977 INFO L276 IsEmpty]: Start isEmpty. Operand 14784 states and 22079 transitions. [2021-12-14 17:45:55,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-14 17:45:55,981 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:45:55,981 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:45:55,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 17:45:55,982 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:45:55,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:45:55,982 INFO L85 PathProgramCache]: Analyzing trace with hash 179241227, now seen corresponding path program 1 times [2021-12-14 17:45:55,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:45:55,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737892847] [2021-12-14 17:45:55,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:45:55,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:45:56,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:56,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:45:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:56,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:45:56,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:56,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:45:56,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:56,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:45:56,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:56,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:45:56,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:56,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:45:56,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:56,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-14 17:45:56,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:56,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-14 17:45:56,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:56,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 17:45:56,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:56,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 17:45:56,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:56,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 17:45:56,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:56,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-14 17:45:56,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:56,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-14 17:45:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:56,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:45:56,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:56,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:45:56,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:56,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:45:56,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:45:56,264 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2021-12-14 17:45:56,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:45:56,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737892847] [2021-12-14 17:45:56,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737892847] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:45:56,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:45:56,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 17:45:56,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654879854] [2021-12-14 17:45:56,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:45:56,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:45:56,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:45:56,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:45:56,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:45:56,266 INFO L87 Difference]: Start difference. First operand 14784 states and 22079 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-14 17:46:06,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:46:06,530 INFO L93 Difference]: Finished difference Result 39062 states and 59398 transitions. [2021-12-14 17:46:06,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:46:06,530 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 149 [2021-12-14 17:46:06,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:46:06,660 INFO L225 Difference]: With dead ends: 39062 [2021-12-14 17:46:06,661 INFO L226 Difference]: Without dead ends: 24298 [2021-12-14 17:46:06,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:46:06,712 INFO L933 BasicCegarLoop]: 3948 mSDtfsCounter, 3485 mSDsluCounter, 6861 mSDsCounter, 0 mSdLazyCounter, 5232 mSolverCounterSat, 1329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3771 SdHoareTripleChecker+Valid, 10809 SdHoareTripleChecker+Invalid, 6561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1329 IncrementalHoareTripleChecker+Valid, 5232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2021-12-14 17:46:06,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3771 Valid, 10809 Invalid, 6561 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1329 Valid, 5232 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2021-12-14 17:46:06,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24298 states. [2021-12-14 17:46:07,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24298 to 21097. [2021-12-14 17:46:07,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21097 states, 14885 states have (on average 1.3476654350016795) internal successors, (20060), 15549 states have internal predecessors, (20060), 4721 states have call successors, (4721), 1275 states have call predecessors, (4721), 1490 states have return successors, (6617), 4733 states have call predecessors, (6617), 4720 states have call successors, (6617) [2021-12-14 17:46:07,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21097 states to 21097 states and 31398 transitions. [2021-12-14 17:46:07,541 INFO L78 Accepts]: Start accepts. Automaton has 21097 states and 31398 transitions. Word has length 149 [2021-12-14 17:46:07,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:46:07,541 INFO L470 AbstractCegarLoop]: Abstraction has 21097 states and 31398 transitions. [2021-12-14 17:46:07,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-14 17:46:07,542 INFO L276 IsEmpty]: Start isEmpty. Operand 21097 states and 31398 transitions. [2021-12-14 17:46:07,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-14 17:46:07,545 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:46:07,546 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:46:07,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 17:46:07,546 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:46:07,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:46:07,546 INFO L85 PathProgramCache]: Analyzing trace with hash 421842475, now seen corresponding path program 1 times [2021-12-14 17:46:07,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:46:07,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604289549] [2021-12-14 17:46:07,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:46:07,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:46:07,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:07,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:46:07,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:07,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:46:07,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:07,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:46:07,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:07,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:46:07,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:07,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:46:07,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:07,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:46:07,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:07,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-14 17:46:07,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:07,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-14 17:46:07,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:07,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 17:46:07,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:07,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 17:46:07,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:07,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 17:46:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:07,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-14 17:46:07,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:07,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-14 17:46:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:07,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:46:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:07,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:46:07,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:07,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:46:07,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:07,865 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-12-14 17:46:07,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:46:07,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604289549] [2021-12-14 17:46:07,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604289549] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:46:07,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:46:07,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-14 17:46:07,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557507024] [2021-12-14 17:46:07,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:46:07,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-14 17:46:07,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:46:07,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-14 17:46:07,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-14 17:46:07,867 INFO L87 Difference]: Start difference. First operand 21097 states and 31398 transitions. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 5 states have internal predecessors, (83), 2 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 1 states have call successors, (16)